CN100555060C - projection system - Google Patents

Abstract

The invention provides a projection system. The invention provides a projection system using a host type projector, which can keep the structure and the processing of the projector simplified and ensure the safety. A projection system of the present invention includes an information processing apparatus (2) and a projector (1) that projects an image based on image data from the information processing apparatus (2), the projector (1) including: a password generation unit (123) that generates a password for determining whether or not execution of the projection processing can be started; and an encryption unit (122) that encrypts the password and outputs the encrypted password to the information processing device (2); an information processing device (2) is provided with: a decryption unit (222) that decrypts the encrypted password; and a password determination unit (224) having a function of determining whether the decryption password is correct, and a function of outputting a signal instructing to start execution of the projection processing to be performed by the information processing device when the decryption password is correct.

Description

projection system

technical field

The present invention relates to a projection system including an information processing device that supplies image data subjected to image processing to a projector, and a projector that projects an image based on the image data from the information processing device, and a projector used in the projection system And an information processing device used in a projection system.

Background technique

In a projection system having an information processing device (personal computer, etc.) that supplies image data to a projector and a projector that projects an image based on the image data from the information processing device, the image data to be displayed by the projector is generally It is sent from the information processing device as an analog signal.

For this reason, the image data stored as digital data by the information processing device is temporarily converted into an analog signal in the information processing device and then sent to the projector. Then, on the projector side, the analog signal from the information processing device is digitized, and image processing including correction processing and the like is performed.

On the other hand, recently, as the performance of CPUs and GPUs of information processing devices has improved, projection systems have been proposed in which image processing including correction processing (for example, shape transformation, color correction, etc.) is performed on the information processing device side Then, the image data (digital data) to be displayed by the projector is sent to the projector through a USB cable or the like.

In such a projection system, since the image data (digital data) subjected to image processing including correction processing is sent to the projector, it is not necessary to perform image processing including correction processing on the projector side. . Such a projector is called a host-based projector, and since the host-based projector can be composed of only the minimum components required for projection, a small and inexpensive device can be realized.

However, in a projection system using a host type projector, software for performing image processing (including correction processing) installed in an information processing device is expensive, not to mention the projector itself.

Therefore, malicious users can produce and sell so-called pirated projectors by combining the software with a projector other than the legitimate projector (called an illegal projector) that is complete with the software.

As a technique for coping with such a problem, for example, there is Patent Document 1. In the technology disclosed in Patent Document 1, the information processing device side acquires a password generated on the projector side, and the information processing device side executes, for example, WEP (wired encryption) on image data to be sent to the projector using the acquired password every time. Encryption such as peer-to-peer privacy, Wired Equivalent Privacy) method, the encrypted image data is sent to the projector, and the encrypted image data from the information processing device is decrypted and displayed every time on the projector side.

In this way, the technique disclosed in Patent Document 1 encrypts image data and the like using a password each time, and transmits the encrypted image data and the like to the projector, thereby ensuring security for software.

Patent Document 1 Japanese Patent Application Laid-Open No. 2003-69923

The technology disclosed in Patent Document 1 is useful for ensuring the security of software.

However, the technology disclosed in Patent Document 1 needs to encrypt all the image data to be sent to the projector every time on the information processing device side, send the encrypted image data to the projector, and encrypt each time in the projector. The encrypted image data is decrypted. In particular, the encrypted image data is decrypted every time on the projector side, which requires preparation of corresponding hardware and software on the projector side, and the configuration and processing of the projector become complicated.

In particular, the main purpose of a projection system using a host-type projector is to simplify the structure and processing of the projector by performing more processing on the information processing device side, thereby suppressing development costs and achieving low product prices. change. Therefore, like the technique disclosed in the above-mentioned Patent Document 1, the technique of decrypting the encrypted image data on the projector side every time is good from the viewpoint of ensuring security. In the projection system of the projector, the advantages of the host projector cannot be fully utilized.

Here, an object of the present invention is to provide a projection system using a host-type projector that can ensure high safety while maintaining simplification of the structure and handling of the projector, and to provide a projector used in the projection system and an information processing device used in the projection system.

Contents of the invention

(1) The projection system of the present invention includes an information processing device for supplying image data subjected to image processing to a projector, and a projector for projecting an image based on the image data from the information processing device, wherein ,

The above-mentioned projector includes: a device connection part on the projector side, which realizes communication with the above-mentioned information processing device; a password generation part on the projector side, which generates a password for judging whether to start processing for projection; An encryption unit on the projector side, which encrypts the password, and outputs the encrypted encrypted password to the information processing device through the equipment connection unit on the projector side, and the information processing device includes: an equipment connection unit on the information processing device side , which realizes communication with the above-mentioned projector; a decryption part on the information processing device side, which uses a decryption key to decrypt the above-mentioned encrypted password input through the device connection part on the information processing device side; and, on the information processing device side The password determination unit has a function of determining whether the decrypted decryption password is correct, and a function of outputting a signal instructing to start execution of the projection processing to be performed by the information processing device if the decryption password is correct.

According to the projection system described in (1) above, on the information processing device side, when it is determined that the password sent by the projector is correct, the projector is considered to be a legitimate projector, and processing for projection is started (in the information Image processing, including correction processing, etc. are performed in the processing device).

Thus, for example, even if a projector that is not a legal projector (illegal projector) is combined with software that can execute processing for projection (image processing including correction processing, etc.) installed in an information processing device to perform projection , the projector cannot project. As a result, it is possible to prevent the illegal use of the software that produces and sells so-called pirated projectors by combining the software with an illegal projector.

In addition, the authentication process performed by the projection system of the present invention is performed as an initial process before actual projection. On the projector side, only encryption of the password is performed in the initial process and then transmitted to the image processing device. Therefore, Compared with the conventional method in which the image data is encrypted each time and then sent to the projector, and the encrypted image data is decrypted each time on the projector side, the processing load on the projector can be reduced.

In this way, the projection system of the present invention can ensure high security while maintaining the simplicity of the structure and handling of the projector. In particular, since the projection system of the present invention is a projection system that uses a host-type projector, the projector side can be simplified as much as possible. Security projection system.

(2) In the projection system described in (1) above, preferably, the password determination unit on the side of the information processing device has a function of outputting the decryption password to the projector through the equipment connection unit on the side of the information processing device; The projector has a password determination unit on the projector side, which determines whether the decryption password input through the device connection unit on the projector side is correct, and outputs an instruction to start executing the above-mentioned decryption password that the projector should perform when the decryption password is correct. The processed signal is used for projection.

In this way, it is also possible to judge whether the cipher decrypted by the information processing device is correct on the projector side, and if the decrypted cipher is correct, the above-mentioned processing for projection is started.

That is, in the projection system described in (2), when it is judged on the information processing device side that the projector is a legitimate projector, and when it is judged on the projector side that the software of the information processing device is legitimate software, the information processing device The projector side starts to execute the projection processing for the projector (image processing including correction processing, etc.), and at the same time, the projector side starts to execute the projection processing (such as driving the optical system and the electro-optic modulation device, etc.) that should be performed by itself. .

In this way, not only is it determined whether the projector connected to the information processing device is a legitimate projector, but also the legitimacy of the software on the information processing device side is determined, whereby it is possible to confirm that the software of the information processing device is legitimate software. Therefore, in such a projection system, for example, it is possible to prevent the software of the information processing device from being replaced with other software that is not legitimate software.

(3) In the projection system described in (1) or (2) above, it is preferable that the information processing device has an encryption generation unit on the information processing device side, and the encryption generation unit on the information processing device side generates an A password with the same password; the password determination unit on the information processing device side compares the decryption password with the password generated by the password generation unit on the information processing device side to determine whether the decryption password is correct.

Accordingly, on the information processing device side, it is possible to appropriately determine whether the password sent from the projector side is correct or not.

(4) In the projection system described in any one of (1) to (3) above, preferably, the information processing device obtains the decryption key through a network.

This refers to obtaining the decryption key from, for example, the website of the manufacturer of the projector or the like. Specifically, by providing the unique number of the projector in the information processing device, etc., the authentication process of the unique number provided by the above-mentioned information processing device is performed on the website of the manufacturer, etc., and when the authentication is passed, the information processing The device can obtain the decryption key from the website of the manufacturer or the like.

In this case, the following advantages can be obtained: since the information processing device constituting the projection system is connected to the manufacturer of the projector through the Internet, information on the status of the projection system, etc. is sent from the user side to the manufacturer side, thereby, the manufacturer side Users of the projection system are supported based on this information.

(5) The projection system described in any one of (1) to (4) above, wherein the projector has encrypted correction information that stores the correction information for correction inherent to the projector and is encrypted. A function; a function of sending the above-mentioned encrypted correction information and the above-mentioned encrypted password to the above-mentioned information processing device.

In this way, since the correction information unique to each projector is stored in an encrypted state, that is, as encrypted correction information by the projector, and the encrypted correction information is sent to the above-mentioned information processing device together with the above-mentioned encrypted password, Therefore, when the correction information unique to each projector is transmitted to the information processing device side, the correction information unique to each projector can be transmitted to the information processing device side in a concealed state.

In addition, the encrypted correction data is stored in the storage unit of the projector in a state encrypted by an encryption means with a high data compression rate, thereby saving the unique data of the projector stored by the projector with a small amount of data. correction information. Therefore, the storage capacity of the storage unit that the projector has can be effectively used.

(6) In the projection system described in any one of (1) to (4) above, it is preferable that the password is generated by including information such as date and time, whose values change.

Therefore, it is possible to make the password more reliable. In this case, it is preferable to set a predetermined validity period for the password. In this way, by setting a predetermined validity period for the password, for example, when multiple people in the same company alternately use the same projector, as long as it is within the set validity period, the same password can be used for normal work.

(7) The projection system of the present invention includes an information processing device that supplies image data after image processing to a projector, and a projector that projects an image based on the image data from the information processing device, wherein: The information processing device includes: a device connection unit on the information processing device side that realizes communication with the projector; a password generation unit on the information processing device side that generates a password for judging whether or not to start processing for projection; and , an encryption unit on the side of the information processing device, which encrypts the password, and outputs the encrypted password to a projector through the device connection part on the information processing device side; the projector includes: a device connection part on the projector side , which realizes communication with the above-mentioned information processing device; a decryption part on the projector side, which uses a decryption key to decrypt the above-mentioned encrypted password input through the equipment connection part on the projector side; and, the password on the projector side The judging unit has a function of judging whether the decrypted decryption code is correct, and a function of outputting a signal instructing to start execution of the projection processing to be performed by the projector if the decryption code is correct.

According to the projection system described in (7), on the side of the information processing device, the encrypted password is sent to the projector side, and it is judged on the projector side whether the password sent by the information processing device is correct, and if it is correct, on the projector side, start At the same time, it transmits an authentication signal indicating that the authentication is successful to the information processing device for the processing for projection that should be performed by itself.

By performing such authentication processing, as in the projection system described in (1) above, for example, even if a projector that is not a legitimate projector (illegal projector) and an executable projector for projection installed in an information processing device Projection is performed by combining software for processing (image processing including correction processing, etc.), and projection cannot be performed with this projector. Therefore, it is possible to prevent illegal use of software that produces and sells so-called pirated projectors by combining the software with illegal projectors.

In addition, the authentication process performed by the projection system described in (7) above is performed as an initial process before actual projection, as in the projector system described in (1) above. That is, in the projection system described in (7) above, in the initial processing, the information processing device side transmits the encryption code to the projector side, and on the projector side, the projector transmits the password to the information processing device. The incoming password is decrypted to determine whether the decrypted password is correct.

Therefore, the projection system described in (7) above is also the same as the projection system described in (1) above, and the image data is encrypted each time before being sent to the projector side, and the image data is encrypted every time on the projector side. Compared with the conventional method of decrypting encrypted image data, the configuration and processing on the projector side can be simplified as much as possible. In this way, also in the projection system described in (7), it is possible to construct a projection system that can ensure high security without losing the advantages of the mainframe projector.

(8) In the projection system described in (7) above, it is preferable that the projector has a password generation unit on the projector side, and the password generation unit on the projector side generates a password for judging whether execution of the processing for projection can be started. The encryption generating unit on the side of the information processing device generates the same encryption as that generated by the encryption generating unit on the projector side.

In this way, by generating the same password on the information processing device side as that generated by the password generating unit on the projector side, it is possible to appropriately determine whether the password sent from the information processing device side is correct on the projector side.

(9) In the projection system described in (7) or (8), preferably, the projector sends an authentication signal to the information processing device when the decryption password is correct, and the information processing device has a projection processing start signal. An output unit configured to output, based on the authentication signal from the projector, a signal instructing to start execution of projection processing to be performed by the information processing device.

In this way, when the password sent by the information processing device is authenticated on the projector side, the projector sends an authentication signal to the information processing device, and the information processing device starts to perform its own projection according to the authentication signal from the projector. deal with. Thereby, appropriate authentication processing can be performed, and high security can be ensured.

(10) In the projection system described in any one of (7) to (9) above, it is preferable that the projector includes a file for causing the information processing device to execute projection processing to be performed by the information processing device. The function of executing the program; and, in the case that the decryption password is correct, the function of sending the above-mentioned execution program to the above-mentioned information processing device, and the above-mentioned information processing device uses the execution program sent by the above-mentioned projector to execute the function of the above-mentioned information processing device. Processing for projection.

In this way, only when the password generated by the information processing device has passed the authentication on the projector side, the execution program is sent from the projector to the information processing device, and the information processing device uses the execution program sent by the projector to execute its own program. Processing that should be performed for projection.

Therefore, unless the password generated by the information processing device is authenticated on the projector side, no processing for projection is performed on the information processing device side, so that security can be further improved.

(11) In the projection system described in any one of the above (7) to (10), preferably, the above-mentioned projector has: the function of saving the correction information inherent in the above-mentioned projector for correction; and, in the above-mentioned decryption When the password is correct, the function of transmitting the correction information to the information processing device, and the information processing device corrects the image data using the correction information transmitted from the projector.

In this way, only when the password generated by the information processing device is authenticated on the projector side, the correction information is sent from the projector to the information processing device, and the information processing device performs correction processing using the correction information sent from the projector. Therefore, unless the password generated by the information processing device is authenticated on the projector side, calibration processing for the projector is not performed on the information processing device side, so that security can be further improved.

In addition, in the information processing device, if the program is not executed, the image processing itself will not be performed. In addition, if the correction information does not exist, it will not be able to become appropriate image data. Therefore, no matter which one is missing, the information processing device cannot Do proper image processing. Therefore, what is sent to the information processing device only when the password generated by the information processing device is authenticated on the projector side may be either the calibration information or the execution program, or both may not be sent at the same time.

(12) In the projection system described in any one of (7) to (11) above, it is preferable that the password is generated from information including date and time, etc., whose values change.

Thereby, the same effect as that of (6) above can be obtained.

(13) In the projection system described in any one of (1) to (12) above, preferably, the password and the decryption key are generated based on a serial number unique to the projector.

In this way, since the password and the decryption key are generated based on the unique numbers attached to the projectors, each projector can be accurately identified, and the password and the decryption key can be easily generated.

(14) The projector of the present invention is used in a projection system having an information processing device and the projector, the information processing device supplies image data on which image processing has been performed to the projector, and the projector performs processing based on the above-mentioned information from the projector. The image of the above-mentioned image data of the device is projected, preferably, the projector includes: a device connection part on the projector side, which realizes communication with the above-mentioned information processing device; a password generation part on the projector side, which generates a password for A password for determining whether execution of projection processing can be started; and an encryption unit on the projector side that encrypts the password, and outputs the encrypted encrypted password to the information processing device through the device connection unit on the projector side.

The projector described in (14) is a projector used in the projection system described in (1) above. According to the projector described in (14), since only the processing of encrypting the password and sending it to the information processing device is performed as the processing before the processing for projection, the configuration can be simplified without increasing the processing load on the projector side. as well as processing. Therefore, according to the projector described in (14), the advantages of the host type projector are not lost, and safety can also be ensured.

Furthermore, the projector described in (14) also preferably has the same features as the projection systems described in (2), (5), (6), and (13) above.

(15) The information processing device of the present invention is used in a projection system having the information processing device and a projector, the information processing device supplies image data on which image processing has been performed to the projector, and the projector pairs The image of the image data of the processing device is projected, and it is characterized in that the information processing device includes: an equipment connection part on the side of the information processing device, which realizes communication with the above-mentioned projector; a decryption part on the side of the information processing device, which The encrypted password sent from the projector is input through the device connection unit on the information processing device side, and the input encrypted password is decrypted using a decryption key; Whether the decryption code is correct or not, and if the decryption code is correct, a function of outputting a signal instructing to start executing the projection processing to be performed by the information processing device.

The information processing device described in (15) is used in the projection system described in the above (1), and according to the information processing device described in the above (15), it is determined on the side of the information processing device whether the password sent by the projector is If it is correct, if the password is correct, the projector is assumed to be an authorized projector, and processing for projection (image processing including correction processing, etc.) is started.

Thus, for example, even if a projector that is not a legitimate projector is combined with software that can perform projection processing (image processing including correction processing, etc.) installed in an information processing device to perform projection, the projector cannot perform projection. projection. Therefore, it is possible to prevent illegal use of software that produces and sells so-called pirated projectors by combining the software with illegal projectors.

Furthermore, the information processing device described in (14) preferably has the same features as those of the projection system described in (2), (3), (4), (6), and (13) above.

(16) The projector of the present invention is used in a projection system having an information processing device and the projector, the information processing device supplies image data on which image processing has been performed to the projector, and the projector performs processing based on the above-mentioned information from the projector. The image of the above-mentioned image data of the device is projected, and it is characterized in that the projector includes: a device connection part on the projector side, which realizes communication with the above-mentioned information processing device; The device connection unit on the instrument side inputs the encrypted password sent by the information processing device, and decrypts the input encrypted password using a decryption key; A function for correctness, and a function for outputting a signal instructing to start execution of the projection processing to be performed by the projector when the decryption code is correct.

The projector described in (16) is used in the projection system described in (7) above. According to the projector described in (16), the encrypted password sent by the information processing device is decrypted on the projector side, and it is judged whether the decrypted password is correct. Moreover, since only the process of transmitting an authentication signal indicating successful authentication to the information processing device is performed as the process before the projection process, the structure and process can be simplified without increasing the processing load on the projector side. Therefore, according to the projector described in (16), the advantages of the host type projector are not lost, and moreover, safety can be ensured.

Furthermore, the projector described in (16) also preferably has the same features as those of the projection system described in (8) to (13) above.

(17) The information processing device of the present invention is used in a projection system having the information processing device and a projector, the information processing device supplies image data on which image processing has been performed to the projector, and the projector pairs The image of the above-mentioned image data of the processing device is projected, and it is characterized in that the information processing device includes: an equipment connection part on the side of the information processing device, which realizes communication with the above-mentioned projector; a password generation part on the side of the information processing device, It generates a password for judging whether to start processing for projection; and an encryption unit on the information processing device side encrypts the password, and outputs the encrypted encrypted password to the projector through the device connection unit.

The information processing device described in (17) is used in the projection system described in the above (7), and according to the information processing device described in the above (17), as the processing before the processing for projection, only the following processing is performed: Since the generated password is encrypted for judging whether or not the projection processing can be started, and the encrypted encrypted password is output to the projector, the processing of the information processing device can be simplified.

Furthermore, in the information processing device described in (17), it preferably has the same features as those of the projection system described in (8) to (13) above.

In addition, the present invention can constitute an authentication processing method for a projection system, an authentication processing method for a projector, an authentication processing program for a projector, an authentication processing method for an information processing device, and an information processing device shown in (18) to (27) below. The authentication handler for .

(18) The authentication processing method for a projection system of the present invention includes an information processing device that supplies image data subjected to image processing to a projector, and a projector that projects an image based on the image data from the information processing device. An authentication processing method for a projection system of a projector, wherein the projector has a step of generating a password for judging whether execution of projection processing can be started, encrypting the password, and passing the encrypted encrypted password through the projector side. a step of outputting from the device connection unit to the information processing apparatus having a step of decrypting the encrypted password input through the device connection unit on the side of the information processing device using a decryption key, and determining the decrypted decrypted password Whether it is correct, if the decryption code is correct, a step of outputting a signal instructing to start execution of the projection processing to be performed by the information processing device.

The authentication processing method of the projection system described in (18) is the authentication processing method executed in the projection system described in (1) above. The authentication processing method of the projection system described in (18) can also obtain the same effect as that of the projection system described in the above (1). Furthermore, the authentication processing method of the projection system described in (18) also preferably has the same features as those of the projection systems described in (2) to (6) and (13) above.

(19) The authentication processing method for a projector of the present invention includes an information processing device that supplies image data subjected to image processing to the projector, and a projector that projects an image based on the image data from the information processing device. The above-mentioned authentication processing method for a projector used in a projector projection system is characterized in that it includes the steps of generating a password for judging whether execution of projection processing can be started, encrypting the password, and passing the encrypted encryption password through A step in which the equipment connection unit on the projector side outputs to the above-mentioned information processing device.

The authentication processing method of the projector described in (19) is an authentication processing method executed in the projector described in (14) above. The authentication processing method for a projector described in (19) can also obtain the same effect as that of the projector described in (14) above. Furthermore, the projector described in (19) also preferably has the same features as the projection systems described in (2), (5), (6), and (13) above.

(20) The authentication processing program for a projector of the present invention includes an information processing device that supplies image data subjected to image processing to the projector, and a projector that projects an image based on the image data from the information processing device. The above-mentioned authentication processing program of the projector used in the projection system of the projector is characterized in that it includes the steps of generating a password for judging whether execution of projection processing can be started, encrypting the password, and passing the encrypted encryption password through A step in which the equipment connection unit on the projector side outputs to the above-mentioned information processing device.

The authentication processing program of the projector described in (20) is an authentication processing program executed in the projector described in (14) above. The authentication processing program of the projector described in (20) can also obtain the same effect as that of the projector described in (14) above. Furthermore, the projector described in (20) also preferably has the same features as the projection systems described in (2), (5), (6), and (13) above.

(21) The authentication processing method for an information processing device according to the present invention includes an information processing device that supplies image data subjected to image processing to a projector, and a method for projecting an image based on the image data from the information processing device. The authentication processing method of the above-mentioned information processing device used in the projection system of the projector is characterized in that it includes inputting the encrypted password transmitted from the above-mentioned projector through the device connection part on the side of the information processing device, and using the decryption key to pair the inputted password. The step of decrypting the encrypted password, and the step of determining whether the decrypted decrypted password is correct, and if the decrypted password is correct, outputting a signal instructing to start execution of the projection processing to be performed by the information processing device.

The authentication processing method of the information processing device described in (21) is an authentication processing method executed in the information processing device described in (15) above. The authentication processing method of the information processing device described in (21) above can also obtain the same effect as that of the information processing device described in (15) above. Furthermore, the authentication processing method of the information processing device described in (21) also preferably has the same features as the projection system described in the above (2), (3), (4), (6), and (13) .

(22) An authentication processing program for an information processing device of the present invention includes an information processing device that supplies image data after image processing to a projector, and a program that projects an image based on the image data from the information processing device. The authentication processing program of the above-mentioned information processing device used in the projection system of the projector is characterized in that it includes inputting the encrypted password sent from the above-mentioned projector through the equipment connection part on the side of the information processing device, and using the decryption key to pair the inputted password. The step of decrypting the encrypted password, and the step of determining whether the decrypted decrypted password is correct, and if the decrypted password is correct, outputting a signal instructing to start execution of the projection processing to be performed by the information processing device.

The authentication processing program of the information processing device described in (22) is an authentication processing program executed in the information processing device described in (15) above. The authentication processing program of the information processing device described in (22) above also preferably has the same features as those of the projection system described in (2), (3), (4), (6), and (13) above.

(23) The authentication processing method for a projection system of the present invention includes an information processing device that supplies image data subjected to image processing to a projector, and a projector that projects an image based on the image data from the information processing device. An authentication processing method for a projection system of an instrument, wherein the above-mentioned information processing device has a step of generating a password for judging whether or not to start processing for projection, encrypting the above-mentioned password, and passing the encrypted encrypted password through information processing a step of outputting the device connection part on the device side to a projector; the projector has a step of decrypting the encrypted password input through the device connection part on the projector side using a decryption key, and determining whether the decrypted decrypted password is If it is correct, if the decryption code is correct, outputting a signal instructing to start execution of the projection processing to be performed by the projector.

The authentication processing method of the projection system described in (23) is an authentication processing method executed in the projection system described in (7) above. The authentication processing method of the projection system described in the above (23) can also obtain the same effect as the projection system described in the above (7); again, the authentication processing method of the projection system described in (23) is also preferably It has the same features as the projection systems described in (8) to (13) above.

(24) The authentication processing method for a projector of the present invention includes an information processing device that supplies image data subjected to image processing to the projector, and a projector that projects an image based on the image data from the information processing device. The method for processing authentication of the above-mentioned projector used in the projection system of the above-mentioned projector is characterized by comprising inputting the encrypted password sent from the above-mentioned information processing device through the equipment connection part on the side of the above-mentioned projector, and using a decryption key to decrypt the input encrypted password. The step of decrypting the password, and the step of judging whether the decrypted decryption password is correct, and outputting a signal instructing to start executing the projection processing to be performed by the projector if the decryption password is correct.

The authentication processing method of the projector described in (24) is an authentication processing method executed in the projector described in (16) above. The authentication processing method of the projector described in (24) also can obtain the same effect as the projector described in the above-mentioned (16); Furthermore, the authentication processing method of the projector described in (24) also preferably has The same features as those of the projection system described in (8) to (13) above.

(25) The authentication processing program for a projector of the present invention includes an information processing device that supplies image data that has undergone image processing to the projector, and a projector that projects an image based on the image data from the information processing device. The authentication processing program of the above-mentioned projector used in the projection system of the above-mentioned projector is characterized in that it includes inputting the encryption password sent from the above-mentioned information processing device through the device connection part on the side of the above-mentioned projector, and using the decryption key to decrypt the input encrypted password. The step of decrypting the password, and the step of judging whether the decrypted decryption password is correct, and outputting a signal instructing to start executing the projection processing to be performed by the projector if the decryption password is correct.

The authentication processing program for the projector described in (25) is an authentication processing program executed in the projector described in (16) above. The authentication processing program of the projector described in the above (25) also can obtain the same effect as the projector described in the above (16); again, the authentication processing program of the projector described in (25) is also preferably It has the same features as the projection systems described in (8) to (13) above.

(26) The authentication processing method for an information processing device according to the present invention includes an information processing device that supplies image data subjected to image processing to a projector, and an image that projects an image based on the image data from the information processing device. The authentication processing method of the above-mentioned information processing device used in the projection system of the projector is characterized by including the steps of generating a password for judging whether execution of projection processing can be started, encrypting the password, and converting the encrypted encrypted A step of outputting the password to the projector through the device connection unit on the information processing device side.

The authentication processing method of the information processing device described in (26) is an authentication processing method executed in the information processing device described in (17) above. The authentication processing method of the information processing device described in (26) above can also obtain the same effect as that of the information processing device described in (17) above. Furthermore, the authentication processing method of the information processing device described in (26) also preferably has the same features as those of the projection system described in (8) to (13) above.

(27)

An authentication processing program for an information processing device according to the present invention includes an information processing device that supplies image data subjected to image processing to a projector, and a projector that projects an image based on the image data from the information processing device. The authentication processing program of the above-mentioned information processing device used in the projection system is characterized in that it includes the steps of generating a password for judging whether execution of projection processing can be started, encrypting the password, and passing the encrypted encrypted password through information The process of outputting to the projector from the device connection unit on the processing device side.

The authentication processing program of the information processing device described in (27) is an authentication processing program executed in the information processing device described in (17) above. The authentication processing program of the information processing device described in (27) above can also obtain the same effect as that of the information processing device described in (17) above. Furthermore, the authentication processing program of the information processing device described in (27) also preferably has the same features as those of the projection system described in (8) to (13) above.

Description of drawings

FIG. 1 is a diagram showing an external configuration of a projection system of the present invention.

FIG. 2 is a diagram showing the configuration of a projection system according to Embodiment 1. FIG.

3 is a flowchart illustrating the authentication processing procedure of the projection system according to the first embodiment.

FIG. 4 is a diagram showing the configuration of a projection system according to Embodiment 2. FIG.

FIG. 5 is a diagram showing the configuration of a projection system according to Embodiment 3. FIG.

FIG. 6 is a diagram showing the configuration of a projection system according to Embodiment 4. FIG.

FIG. 7 is a flowchart illustrating an authentication processing procedure of the projection system according to Embodiment 4. FIG.

FIG. 8 is a diagram showing the configuration of a projection system according to Embodiment 5. FIG.

FIG. 9 is a flowchart illustrating an authentication processing procedure of the projection system according to Embodiment 5. FIG.

Symbol Description

1: projector; 2: information processing device; 3: connecting cable; 4: website; 5: network; 11: image projection unit; 12: authentication processing unit (projector side); 21: image data processing unit; 22 : authentication processing unit (information processing device side); 121: password generation unit (projector side); 122: encryption unit; 123: password determination unit (projector side); 125: encryption correction information storage unit (projector side) 126: decryption unit (projector side); 127: correction information storage unit (projector side); 128: execution program storage unit (projector side); 221: decryption key generation unit; 222: decryption unit (information processing device side); 223: password generation unit (information processing device side); 224: password determination unit (information processing device side); 125: encryption correction information storage unit (projector side); 227: decryption correction information storage unit (information processing device side); processing device side); 228: encryption unit (information processing device side); 229: projection processing start signal output unit; 230: correction information storage unit (information processing device side); 231: execution program storage unit (information processing device side)

Detailed ways

Next, embodiments of the present invention will be described.

Embodiment 1

FIG. 1 is a diagram showing an external configuration of a projection system according to Embodiment 1 of the present invention. As shown in FIG. 1 , the projection system according to Embodiment 1 of the present invention includes a projector 1 and an information processing device 2 such as a personal computer, and these projector 1 and information processing device 2 are connected by a connection cable 3 . In addition, the external configuration of the projection system shown in FIG. 1 is also the same in projection systems of other embodiments described later.

The projector 1 used in the projection system according to each embodiment of the present invention is a so-called mainframe projector. That is, image processing including correction processing is performed on the side of the information processing device 2, and image data after performing image processing including correction processing is sent to the projector 1 as digital data, and the projector 1 receives data from The image data of the information processing device 1 is processed for projection.

Therefore, on the information processing device 2 side, there is an image data processing unit 21 that processes an image to be projected by the projector 1 . The image data processing unit 21 includes an image data acquisition unit 211 , a shape conversion processing unit 212 , a color conversion processing unit 213 , a transfer processing unit 214 , and the like. In addition, the information processing device 2 includes an authentication processing unit 22 that performs authentication processing with the projector 1 .

On the other hand, the projector 1 has an image projecting section 11 having an electro-optical modulation device, an optical system, a control device for controlling them, and the like, and an authentication processing section 12 which is connected with an information processing device. 2 for authentication processing.

FIG. 2 is a diagram showing the configuration of a projection system according to Embodiment 1. FIG. The projector 1 and the information processing device 2 in FIG. 2 show the configurations of the authentication processing unit 12 on the projector 1 side and the authentication processing unit 22 on the information processing device 2 side shown in FIG. Illustration of the image projecting unit 11 in the instrument 1, the image data processing unit 21 in the information processing device 2, and the like are omitted.

As shown in FIG. 2 , the authentication processing unit 12 on the projector 1 side includes: a password generation unit 121 on the projector side that generates a password for judging whether to start processing for projection; an encryption unit 122 on the projector side that The password generated by the password generation unit 121 is encrypted, and the encrypted password is output; the password determination unit 123 on the projector side inputs the password sent by the information processing device 2, and determines whether the input password is correct. , outputting a signal (referred to as a projection processing start signal) to the image projection unit 11, etc., which instructs to start executing the processing for projection that should be performed by the projector 1 (for example, the driving of the optical system and the electro-optical modulation device, etc.); and, equipment connection The unit 124 connects the projector 1 and the information processing device 2 to realize communication with the information processing device.

On the other hand, the authentication processing unit 22 of the information processing device 2 includes: a decryption key generation unit 221 that generates a decryption key for decrypting the encrypted password (referred to as an encrypted password) sent from the projector 1; The decryption unit 222 on the information processing device side decrypts the encrypted password using the decryption key generated by the decryption key generation unit 221; the password generation unit 223 on the information processing device side generates a password for the projector 1; the information processing device side The password determination unit 224 compares the password decrypted by the decryption unit 222 (referred to as a decryption password) with the password generated by the password generation unit 223 to determine whether the decryption password is correct, and when it is determined that the decryption password is correct as the password of the projector 1 In the case of , the decryption code is output to the projector 1, and at the same time, a signal (projection processing start signal) instructing to start execution of projection processing (image processing including correction processing, etc.) to be performed by the information processing device 2 is sent. output to the image data processing unit 21, etc.;

With such a configuration, the authentication processing procedure of the projection system according to Embodiment 1 will be described. This authentication process is performed as a process before the projection process to be performed by the projector 1 and the projection process to be performed by the information processing device 2 when the projector 1 is connected to the information processing device 2 .

First, a password is generated by the password generation unit 121 in the projector 1 , and the generated password is encrypted by the encryption unit 122 . Then, the encryption unit 122 outputs the encrypted password to the information processing device 2 through the device connection unit 124 .

The password generated by the password generation unit 121 has a different value for each projector, and is generated based on a unique number (referred to as an individual number) assigned to each projector such as a serial number.

On the other hand, on the side of the information processing device 2 , the decryption unit 222 inputs the encrypted password through the device connection unit 225 , decrypts it using the decryption key, and acquires the password of the projector 1 . The decryption key is generated by the decryption key generation unit 221 based on the individual number of the projector 1 .

In addition, on the side of the information processing device 2 , the password generating unit 223 generates a password for the projector 1 based on the individual number of the projector 1 connected to itself. The password generation unit 223 generates a password when the projector 1 is connected to the information processing device 2 by the user inputting the serial number which is the individual number of the projector 1 , and generates the same password as the projector 1 .

Furthermore, in the information processing device 2 , the decryption password and the password generated by the password generation unit 223 are compared by the password determination unit 224 to determine whether the decryption password is correct. As a result of the determination, if the two do not match, it is determined that the decryption code is incorrect, and the projection processing is not performed.

On the other hand, when it is determined by the password determination unit 224 that the decryption password matches the password generated by the password generation unit 223 and the decryption password is correct, it is determined that the projector 1 is an authorized projector. At this time, the password determination unit 224 of the information processing device 2 outputs the decryption password decrypted by itself to the projector 1 through the device connection unit 225, and at the same time outputs an instruction to the image data processing unit 21 shown in FIG. Signal for projection processing on the side (projection processing start signal).

On the other hand, on the projector 1 side, when receiving the decryption password transmitted from the information processing device 2, the password judging unit 123 judges whether the decryption password is equal to the password generated by itself (the password generated by the password generating unit 121) or not. match, only when the decryption password sent by the information processing device 2 is consistent with the password generated by the information processing device 2, an instruction to start executing the projection processing to be performed by the projector 1 is output to the image projection unit 11 shown in FIG. signal (projection processing start signal).

When the decryption code transmitted from the information processing device 2 does not match the code generated by itself, the projection processing to be performed by the projector 1 is not performed.

In this way, on the information processing device 2 side, it is judged not only whether the password sent from the projector 1 is correct, but also whether the decrypted password decrypted on the information processing device 2 side is correct or not on the projector 1 side.

Thereby, the information processing device 2 can judge whether or not the projector 1 as hardware connected to itself is an authorized projector. In addition, the projector 1 can judge whether the software of the information processing device 2 connected to itself is legitimate software.

Moreover, when the information processing device 2 side determines that the projector 1 is a legitimate projector and when the projector 1 side determines that the software of the information processing device 2 is legitimate software, the information processing device 2 side starts executing the Simultaneously with the projection processing to be performed by the information processing device of the projector 1 , the projection processing to be performed by itself is also started on the projector 1 side.

In this way, not only is it judged whether the projector 1 connected to the information processing device 2 is a legitimate projector, but also the legitimacy of the software on the information processing device 2 side is judged. is legitimate software. Therefore, in such a projection system, for example, it is possible to prevent the software of the information processing device 2 from being used by replacing it with software other than legitimate software.

3 is a flow chart illustrating the authentication processing procedure of the projection system according to the first embodiment, FIG. 3(a) shows the processing procedure performed by the projector 1, and FIG. Since the processing content of each step has already been described, the overall processing process is briefly described here.

First, on the projector 1 side, a password is generated (step S1), the generated password is encrypted (step S2), and the encrypted password is transmitted (step S3). Here, the projector 1 is in a state waiting for a password (decryption password) from the information processing device 2, that is, a password reception waiting state (step S4).

On the other hand, on the side of the information processing device 2, from the state of waiting for the password (encryption password) from the projector 1, that is, the password waiting state (step S11), once the encryption password is received (step S12), a decryption key is generated. (step S13), perform decryption processing (step S14).

Then, it is judged whether the decryption password is correct (step S15), if the decryption password is correct, then the authentication is successful (step S16), the decryption password is sent to the projector 1, and the projection processing ( Steps S17, S18). In addition, when it is determined in step S15 that the decryption password is incorrect, the authentication fails (step S19). When the authentication fails, the processing for projection is not executed.

On the other hand, on the projector 1 side, in the state of waiting for the password from the information processing device 2 (step S4), if the decryption password is sent by the information processing device 2, the decryption password is received (step S5), and the transmission is judged. Whether the incoming decryption password is correct (step S6), if the password is correct, then the authentication is successful (step S7), and the projection processing that should be performed by the projector 1 is started (step S8). Moreover, when it judges that a password is incorrect in step S6, authentication fails (step S9). When the authentication fails, the processing for projection is not executed.

In addition, the authentication processing described above can be performed by the user following predetermined steps when the projector 1 is connected to the information processing device 2 , but preferably, when the projector 1 is connected to the information processing device 2 , Automatically on the system side. However, individual number input, such as a serial number, etc. are performed by a user. This also applies to projection systems of other embodiments described later.

The input operation of the individual number by the user only needs to be performed once when the projector 1 is connected to the information processing device 2 . Then, the input individual number is stored in the storage unit, and the system then reads the individual number from the storage unit as necessary to execute the authentication process described above. In this way, the user's operation can be suppressed to a minimum as much as possible, and convenience can be improved.

Embodiment 2

Embodiment 2 is an embodiment in which, in the information processing device 2 , the information processing device 2 acquires a decryption key used when decrypting an encrypted password from a predetermined site on the Web.

FIG. 4 is a diagram showing the configuration of a projection system according to Embodiment 2. FIG. In FIG. 4 , as in FIG. 2 , only the configurations of the authentication processing unit 12 on the projector 1 side and the authentication processing unit 22 on the information processing device 2 side shown in FIG. 1 are shown.

As shown in FIG. 4 , a decryption key generation unit 41 exists in a predetermined site 4 on the Web (for example, a projector manufacturer's site) or the like. Therefore, the information processing device 2 needs to be connected to a network 5 such as the Internet. In addition, the website 4 having the decryption key generation unit 41 has an individual authentication unit 42 for authenticating an individual number. In addition, the information processing device 2 has an Internet connection unit 226 .

In this configuration, if the individual number of the projector 1 to be processed is provided by the information processing device 2, the information is processed by the individual authentication unit 42 provided in the Web site 4 having the decryption key generation unit 41. In the authentication process of the individual number provided by the device 2, if the individual number is correct, the decryption key generation unit 41 generates a corresponding decryption key.

Then, in the information processing device 2, the decryption key is obtained from the Web site 4, and the decryption unit 222 decrypts the encrypted password using the obtained decryption key. Thereafter, the same processing as that of the projection system of Embodiment 1 is performed. In FIG. 4, the same symbols are attached to the same parts as those in FIG. 1 .

According to the projection system according to Embodiment 2, there is an advantage that the information processing device 2 constituting the projection system is connected to the manufacturer of the projector 1 through a network 5 such as the Internet, and therefore information about the status of the projection system, etc., can be obtained from the user side. The information is sent to the manufacturer side, whereby the user using the projection system is supported on the manufacturer side based on the information from the user. For example, correction parameters corresponding to the projection environment of the projector of the projection system and the like may be transmitted.

In addition, in the projection system according to the second embodiment, it is also possible to obtain the following effect: since processing such as generation of a decryption key does not need to be performed on the projection system side, the information processing device 2 does not require a decryption key generation unit, and can Simplification of the configuration and processing of the information processing device 2 is realized.

In the projection systems of Embodiment 1 and Embodiment 2, the password was described as an example using a fixed value such as an individual number, but other than the individual number, it is also possible to use information whose value changes, including date and time, etc. value to form a password.

At this time, on the projector 1 side, the password including information such as date and time in the individual number is encrypted, and then sent to the information processing device 2 side, and on the information processing device 2 side, a decryption key is generated and decrypted. The decryption key is generated from the date and time, etc. in addition to the individual number. In addition, as described in Embodiment 2, when the decryption key generation unit exists in the website, it similarly generates a decryption key generated from date and time in addition to the individual number, and performs decryption.

In this way, the password is configured using values including the date, time, etc. in addition to the individual number, thereby increasing reliability. In addition, in the case where the password is constituted by a value including date and time, it is preferable to specify a predetermined validity period. Thus, for example, when multiple people in the same company use the same projector alternately, as long as they are within the validity period, they can work normally with the same password, thereby improving convenience.

Embodiment 3

FIG. 5 is a diagram showing the configuration of a projection system according to Embodiment 3. FIG. In the projection system of the present invention, when there is correction information unique to each projector, the following process is performed: the correction information unique to the projector is transmitted from the projector 1 to the information processing device 2, and on the side of the information processing device 2, based on the Image processing is performed on the unique correction information sent from the projector 1 , and the image data after the image processing is sent to the projector 1 . In this way, when it is necessary to transmit correction information unique to the projector from the projector 1 side to the information processing device 2 , it is preferable to encrypt the correction information and transmit it to the information processing device 2 as encrypted correction information.

In the projection system according to Embodiment 3, the correction information is stored in an encrypted state in the projector 1 . That is, as shown in FIG. 5 , an encrypted correction information storage unit 125 for storing encrypted correction information is provided. Then, the encrypted correction information unique to the projector stored in the encrypted correction information storage unit 125 is sent to the information processing device 2 as encrypted data together with the encrypted password encrypted by the encrypted unit 122 .

In addition, the encryption of the correction information is performed by the same encryption means as that of the encryption of the password. Therefore, decryption on the side of the information processing device 2 can be performed using the same decryption key as decryption of the encryption code.

On the other hand, on the information processing device 2 side, there is a decrypted correction information storage unit 227 that stores decrypted correction information (referred to as decrypted correction information). The encrypted data (encrypted correction information and encrypted password) sent from the projector 1 is decrypted by the decryption unit 222 using the decryption key, and the decrypted correction information is stored in the decrypted correction information storage unit 227 . In addition, the decryption password decrypted by the decryption unit 222 is supplied to the password determination unit 224 as in the projection system of the first embodiment, and the same processing as that of the projection system of the first embodiment is performed.

When the image data processing unit 21 of the information processing device 2 processes the image data to be projected by the projector 1 , the image data processing also takes into account the correction information stored in the decrypted correction information storage unit 227 .

Like the projection system of Embodiment 3, it has the function of transmitting the correction information unique to each projector to the information processing device 2 as encrypted correction information. In the case of two sides, the correction information unique to each projector can be transmitted to the information processing device side in a concealed state.

In addition, by storing the unique correction information to be stored in the projector as encrypted correction information generated using an encryption means with a high data compression rate, it is possible to reduce the data amount of the unique correction information to be stored in the projector 1 . Therefore, the storage capacity of the storage unit of the projector 1 can be effectively utilized.

In addition, also in the projection system of Embodiment 3, similarly to the projection system of Embodiment 2 (see FIG. 4 ), the decryption key used for decrypting encrypted data (encrypted correction information and encrypted password) can be obtained from a Web site. .

In addition, in the projection systems according to Embodiments 1 to 3 described above, when it is determined on the information processing device 2 side that the projector 1 is an authorized projector, and when it is determined on the projector 1 side that the information processing device 2 is When the software is legitimate software, that is, only when both the information processing device 2 and the projector 1 are authenticated successfully, the information processing device 2 and the projector 1 respectively start processing for projection. As long as the information processing device 2 determines that the projector 1 is a legitimate projector, the authentication can be considered successful, and the information processing device 2 and the projector 1 start to execute the processing for projection that should be performed. In this case, the projector 1 does not need to perform password determination processing, and therefore the password determination unit 123 is also unnecessary, so that the configuration and processing of the projector 1 can be further simplified.

Embodiment 4

FIG. 6 is a diagram showing the configuration of a projection system according to Embodiment 4. FIG. As shown in FIG. 6 , the authentication processing unit 12 on the side of the projector 1 includes: a password generation unit 121 that generates a password for judging whether or not to start executing the projection processing to be performed by the information processing device 2 and the projector 1; 126, which inputs the encrypted password sent by the information processing device 2, and decrypts the input password; the password judging section 123, which judges whether the decrypted password is correct, and when the password is correct, sends a message to the image projecting section 11 (refer to FIG. 1 ) and other output signals (referred to as a projection processing start signal), which instructs the start of the projection processing (such as the drive of the optical system and the electro-optic modulation device, etc.) A successful signal; and, the device connection unit 124, which connects the projector 1 and the information processing device 2 to realize communication with the information processing device.

On the other hand, the authentication processing unit 22 of the information processing device 2 includes: a password generation unit 223 that generates the same password as that generated by the projector 1; and an encryption unit 228 that encrypts the password generated by the password generation unit 223. , output the encrypted password; the projection processing start signal output unit 229, which outputs a signal (projection processing start signal) to the image data processing unit 21 (refer to FIG. processing (image processing including correction processing, etc.);

In such a configuration, on the side of the information processing device 2 , the password generation unit 223 generates the same password as that generated in the projector 1 . Then, the encryption unit 228 encrypts the password generated by the password generation unit 223 . The encryption unit 228 outputs the encrypted password to the projector 1 through the device connection unit 225 .

On the other hand, on the side of the projector 1 , the decryption unit 126 inputs the encrypted password through the device connection unit 124 , decrypts it using the decryption key, and obtains the decrypted password.

Then, in the projector 1 , the decryption password is compared with the password generated by the password generation unit 121 by the password determination unit 123 to determine whether the decryption password is correct. As a result of the determination, if the two do not match, it is determined that the decryption code is incorrect, and the projection processing is not performed.

In addition, when it is judged by the password judging unit 123 that the decrypted password matches the password generated by the password generating unit 121 and that the decrypted password is correct, a signal (authentication signal) indicating successful authentication is sent to the information processing device 2, and at the same time, a signal is projected on the image. The unit 11 (see FIG. 1 ) and the like output a signal (projection process start signal) instructing to start execution of projection processing to be performed by the projector 1 .

On the other hand, on the side of the information processing apparatus 2, when the projection processing start signal output unit 229 receives the authentication signal transmitted from the projector 1 through the device connection unit 225, the projection processing start signal output unit 229 sends a signal to the image data processing unit 21 ( Referring to FIG. 1 ), etc., a signal (projection process start signal) instructing to start execution of projection processing to be performed by the information processing device 2 is output.

7 is a flowchart explaining the processing procedure of the projection system according to Embodiment 4, FIG. 7( a ) shows the processing procedure performed by the projector 1 , and FIG. 7( b ) shows the processing procedure performed by the information processing device 2 . Since the processing content of each step has already been described, the overall processing process is briefly described here.

First, on the side of the projector 1, a password is generated (step S21), and it enters a state of waiting for a password (encrypted password) from the information processing device 2, that is, a password waiting state (step S22).

On the other hand, on the side of the information processing device 2, a password is generated (step S31), the generated password is encrypted (step S32), the encrypted password is sent to the projector 1 (step S33), and it becomes waiting for a message from the projector. The status of the authentication result of 1 (step S34).

In addition, in the projector 1, if the encrypted password from the information processing device 2 is received (step S23), the received encrypted password is decrypted (step S24), and it is judged whether the decrypted password (decrypted password) is correct (step S24). S25). If the decryption password is correct, the authentication is considered successful (step S26), and the processing for projection that should be performed by itself is performed (step S27). As a result of judging whether the decryption password is correct in step S25, if the decryption password is incorrect, it is considered that the authentication has failed (step S46). When the authentication fails, the processing for projection is not executed.

On the other hand, when the information processing device 2 receives the authentication signal from the projector 1 in the authentication waiting state (step S34), it starts to execute the processing for projection that it should perform (step S35).

As described above, in the projection system according to the fourth embodiment, the projector 1 judges whether the password sent from the information processing device 2 is correct, and if it is correct, the projector 1 starts its own At the same time as the processing for projection is performed, an authentication signal indicating successful authentication is sent to the information processing device 2 . Thereby, in the information processing device, the processing for projection which should be performed by itself is started.

By performing such an authentication process, as in the projection systems of Embodiments 1 to 3, security can be ensured. In addition, the processing performed in the projection system of the fourth embodiment is performed as the initial processing before actual projection, as in the projection systems of the first to third embodiments described above. Therefore, compared with the method of decrypting the entire image data, hardware and software can be simplified, and a projection system that can ensure security without losing the advantages of a mainframe projector can be constructed.

Embodiment 5

FIG. 8 is a diagram showing the configuration of a projection system according to Embodiment 5. FIG. In the projection system according to the fifth embodiment, in addition to the components of the projection system according to the fourth embodiment (see FIG. 6 ), as shown in FIG. 8 , the authentication processing unit 12 on the projector 1 side includes: 127 which stores correction information specific to the projector; and an execution program storage unit 128 which stores an execution program for executing processing to be performed by the information processing device 2 .

In addition, the authentication processing unit 22 on the information processing device 2 side includes: a correction information storage unit 230 that stores the correction information sent from the projector 1 side; and an execution program storage unit 231 that stores the correction information sent from the projector side to execute the program.

9 is a flowchart illustrating the processing procedure of the projection system according to the fifth embodiment, FIG. 9( a ) shows the processing procedure performed by the projector 1 , and FIG. 9( b ) shows the processing procedure performed by the information processing device 2 .

Steps S41 to S46 of the processing on the projector 1 side in FIG. 9 are the same processing as steps S21 to S26 in FIG. 7 , and processing steps S51 to S54 on the information processing device 2 side are the same as steps S31 to S34 in FIG. processing.

As can be seen from FIG. 9 , in the projection system according to Embodiment 5, if the password sent by the information processing device 2 can be authenticated on the side of the projector 1, the projector 1 sends the correction information and execution to the information processing device 2. The program is different from the projection system of the fourth embodiment in that the information processing device 2 uses the correction information transmitted from the projector 1 and executes the program to execute the projection processing it should perform.

In FIG. 9 , the description starts from step S45 on the projector side, and the description starts from step S54 on the information processing device side. With regard to the projector 1, if the result of determining whether the decryption password is correct in step S45 is that the decryption password is correct, the authentication is considered successful (step S46), and the execution program and correction information are sent to the information processing device 2 (step S47). In addition, the projector 1 executes the processing for projection that it should perform (step S48).

On the other hand, with regard to the information processing device 2, in the authentication waiting state (step S54), if the execution program and correction information transmitted from the projector 1 are received (step S55), the received execution program and correction information are used The processing for projection which should be performed by itself is started (step S56).

In this way, only when the password generated by the information processing device 2 is determined to be correct by the projector 1, the projector 1 sends the execution program and correction information to the information processing device 2, so that in the information processing device 2, The image data to be projected by the projector 1 is processed.

In addition, in the information processing device 2, if the execution program does not exist, the image processing itself will not be performed. In addition, if the correction information does not exist, appropriate image data cannot be obtained. Appropriate image processing is performed in device 2. Therefore, either one of the calibration information and the execution program may be stored on the projector 1 side, and when the password sent by the information processing device 2 on the projector 1 side can pass the authentication, the calibration information stored by the projector 1 or The execution program is sent to the information processing device 2 .

For example, in the initial state, the calibration information may be stored on the projector 1 side, the execution program may be stored by the information processing device 2, and when the password is authenticated in the projector 1, the projection information may be transmitted from the projector 1 to the information processing device 2. Calibration information stored in instrument 1.

In addition, on the contrary, it is also possible to store the execution program on the projector 1 side in the initial state, and store the correction information in the information processing device 2. 2 Send the execution program stored in the projector 1.

As described above, according to the projection system of Embodiment 5, the same effect as that of the projection system of Embodiment 4 can be obtained. In addition, in the projection system of Embodiment 5, only the password generated by the information processing device 2 is displayed on the projector 1. If the side has passed the authentication, the correction information and/or execution program are sent from the projector 1 to the information processing device 2, and the information processing device 2 uses the correction information and/or execution program sent from the projector 1 to perform Projection processing that should be performed by oneself.

As a result, unless the password generated by the information processing device 2 is authenticated by the projector, processing for projection cannot be properly performed on the information processing device side, and thus security can be further improved.

In addition, in the projection system of Embodiment 4 and Embodiment 5, as in Embodiment 1 and Embodiment 2, in addition to the individual number, it is also possible to form a password with a value including information whose value changes, such as date and time. .

In addition, this invention is not limited to the said embodiment, Various deformation|transformation is possible in the range which does not deviate from the summary of this invention. For example, in Embodiments 1 to 3, on the information processing device 2 side, as a result of judging whether the decryption code is correct, if it is determined that the decryption code is incorrect, not only does not start the projection processing, but The projector 1 and the information processing device 2 display a message for the user's attention. As the content of the message, for example, it is conceivable that the used projector is not an authorized projector.

In addition, similarly, in Embodiments 1 to 3, when the decryption password sent by the information processing device 2 to the projector 1 does not match the own password generated by the projector 1 side, not only the decryption for projection is not performed, The processing is executed, and a message to remind the user to pay attention is displayed on the projector 1 and the information processing device 2 . As the content of the message, for example, a content indicating that the used software is not legal software can be considered.

Furthermore, the method of displaying a message prompting the user to pay attention when it is determined that the decryption password is incorrect can also be applied to the projection systems of Embodiment 3 and Embodiment 4.

In addition, as a program for causing the projector 1 to execute the authentication processing on the projector 1 side described in the above-mentioned embodiments, an authentication processing program for the projector can be created, and the created authentication processing program for the projector can be recorded. to various recording media. Similarly, as a program for causing the information processing device 2 to execute the authentication processing on the information processing device 2 side, an information processing device authentication processing program can be created, and the created information processing device authentication processing program can be recorded in various in the recording medium.

Therefore, the present invention also includes a recording medium on which a projector authentication processing program is recorded, and a recording medium on which an information processing device authentication processing program is recorded. In addition, these projector authentication processing programs and information processing device authentication processing programs can also be obtained from the Internet.

Claims (18)

1. optical projection system, it has signal conditioning package and the projector to carrying out projection based on the image from the above-mentioned view data of above-mentioned signal conditioning package that the view data after the carries out image processing is offered projector, it is characterized in that,

Above-mentioned projector comprises:

The equipment connecting portion of projector side, its realize with above-mentioned signal conditioning package between communicate by letter;

The password generating unit of projector side, its generation are used to judge the password that could begin to carry out the processing of projection usefulness; And,

The projector side add compact part, it is encrypted above-mentioned password, the Crypted password of the equipment connecting portion by above-mentioned projector side after with above-mentioned encryption outputs to above-mentioned signal conditioning package;

Above-mentioned signal conditioning package comprises:

The equipment connecting portion of signal conditioning package side, its realize with above-mentioned projector between communicate by letter;

The decryption part of signal conditioning package side, it uses decruption key that the above-mentioned Crypted password of importing by the equipment connecting portion of above-mentioned signal conditioning package side is decrypted; And,

The password detection unit of signal conditioning package side, its have the whether correct function of the clear crytpographic key judged after the above-mentioned deciphering and under the correct situation of above-mentioned clear crytpographic key the output indication begin to carry out above-mentioned projection that above-mentioned signal conditioning package institute should carry out function with the signal of processing.

2. optical projection system according to claim 1 is characterized in that,

The password detection unit of above-mentioned signal conditioning package side has the function that above-mentioned clear crytpographic key is exported to above-mentioned projector by the equipment connecting portion of above-mentioned signal conditioning package side;

Above-mentioned projector has the password detection unit of projector side, whether it judges by the above-mentioned clear crytpographic key of the equipment connecting portion input of above-mentioned projector side correct, and the output indication begins to carry out the signal that processing is used in above-mentioned projection that above-mentioned projector institute should carry out under the correct situation of above-mentioned clear crytpographic key.

3. optical projection system according to claim 1 and 2 is characterized in that,

Above-mentioned signal conditioning package has the password generating unit of signal conditioning package side, and the password generating unit of this signal conditioning package side generates the identical password of password that generates with above-mentioned projector;

The password detection unit of above-mentioned signal conditioning package side compares by the password that the password generating unit with above-mentioned clear crytpographic key and above-mentioned signal conditioning package side generates, and judges whether above-mentioned clear crytpographic key is correct.

4. optical projection system according to claim 1 and 2 is characterized in that,

Above-mentioned signal conditioning package is obtained above-mentioned decruption key by network.

5. optical projection system according to claim 1 and 2 is characterized in that, above-mentioned projector has:

The preservation control information that is used to proofread and correct that this projector is intrinsic is encrypted the function of the encryption control information of back formation;

Above-mentioned encryption control information and above-mentioned Crypted password are sent to the function of above-mentioned signal conditioning package.

6. optical projection system according to claim 1 and 2 is characterized in that, the information that above-mentioned password is to use its value to change generates.

7. optical projection system according to claim 1 is characterized in that, above-mentioned password and above-mentioned decruption key are based on the intrinsic numbering of above-mentioned projector and generate.

8. optical projection system, it has signal conditioning package and the projector to carrying out projection based on the image from the above-mentioned view data of above-mentioned signal conditioning package that the view data after the carries out image processing is offered projector, it is characterized in that,

Above-mentioned signal conditioning package comprises:

The equipment connecting portion of signal conditioning package side, its realize with above-mentioned projector between communicate by letter;

The password generating unit of signal conditioning package side, its generation are used to judge the password that could begin to carry out the processing of projection usefulness; And,

The signal conditioning package side add compact part, it is encrypted above-mentioned password, and the equipment connecting portion of the Crypted password after the above-mentioned encryption by above-mentioned signal conditioning package side outputed to projector;

Above-mentioned projector comprises:

The equipment connecting portion of projector side, its realize with above-mentioned signal conditioning package between communicate by letter;

The decryption part of projector side, it uses decruption key that the above-mentioned Crypted password of importing by the equipment connecting portion of above-mentioned projector side is decrypted; And,

The password detection unit of projector side, whether correct it have the clear crytpographic key judged after the above-mentioned deciphering function, and the output indication begins to carry out above-mentioned projection that above-mentioned projector institute should the carry out function with the signal of processing under the correct situation of above-mentioned clear crytpographic key.

9. optical projection system according to claim 8 is characterized in that,

Above-mentioned projector has the password generating unit of projector side, and the password generating unit of this projector side generates and is used to judge the password that could begin to carry out the processing of above-mentioned projection usefulness,

The password generating unit of above-mentioned signal conditioning package side generates the identical password of password that generates with the password generating unit of above-mentioned projector side.

10. according to Claim 8 or 9 described optical projection systems, it is characterized in that,

Above-mentioned projector sends authentication signal to above-mentioned signal conditioning package under the correct situation of above-mentioned clear crytpographic key,

Above-mentioned signal conditioning package has projection process commencing signal efferent, and this projection process commencing signal efferent is based on the authentication signal from above-mentioned projector, and the output indication begins to carry out projection that above-mentioned signal conditioning package institute should the carry out signal with processing.

11. according to Claim 8 or 9 described optical projection systems, it is characterized in that,

Above-mentioned projector has:

Preservation be used to make above-mentioned signal conditioning package carry out above-mentioned signal conditioning package the projection that should carry out with the function of the executive routine of handling; And

Under the correct situation of above-mentioned clear crytpographic key, to the function of above-mentioned signal conditioning package transmission above-mentioned executive programs,

Above-mentioned signal conditioning package uses the executive routine that is sent by above-mentioned projector, carries out projection that above-mentioned signal conditioning package institute should carry out with processing.

12. according to Claim 8 or 9 described optical projection systems, it is characterized in that,

Above-mentioned projector has:

Preserve the function of the intrinsic control information that is used to proofread and correct of above-mentioned projector; And

Under the correct situation of above-mentioned clear crytpographic key, send the function of above-mentioned control information to above-mentioned signal conditioning package,

Above-mentioned signal conditioning package uses the control information of being sent by above-mentioned projector that view data is proofreaied and correct.

13. according to Claim 8 or 9 described optical projection systems, it is characterized in that the information that above-mentioned password is to use its value to change generates.

14. optical projection system according to claim 8 is characterized in that, above-mentioned password and above-mentioned decruption key are based on the intrinsic numbering of above-mentioned projector and generate.

15. projector, it is used for having the optical projection system of signal conditioning package and this projector, this signal conditioning package will have been carried out the view data after the Flame Image Process and offer projector, this projector is to carrying out projection based on the image from the above-mentioned view data of above-mentioned signal conditioning package, it is characterized in that this projector comprises:

The equipment connecting portion of projector side, its realize with above-mentioned signal conditioning package between communicate by letter;

The password generating unit of projector side, its generation are used to judge the password that could begin to carry out the processing of projection usefulness; And

The projector side add compact part, it is encrypted above-mentioned password, and the Crypted password after the above-mentioned encryption is exported to above-mentioned signal conditioning package by the equipment connecting portion of above-mentioned projector side.

16. signal conditioning package, it is used for having the optical projection system of this signal conditioning package and projector, this signal conditioning package will have been carried out the view data after the Flame Image Process and offer projector, this projector is to carrying out projection based on the image from the above-mentioned view data of above-mentioned signal conditioning package, it is characterized in that this signal conditioning package comprises:

The equipment connecting portion of signal conditioning package side, its realize with above-mentioned projector between communicate by letter;

The decryption part of signal conditioning package side, it uses decruption key that the Crypted password of input is decrypted by the Crypted password that the equipment connecting portion input of above-mentioned signal conditioning package side is sent by above-mentioned projector; And

The password detection unit of signal conditioning package side, whether correct it have the clear crytpographic key judged after the above-mentioned deciphering function, and under the correct situation of above-mentioned clear crytpographic key, the output indication begins to carry out above-mentioned projection that above-mentioned signal conditioning package institute should the carry out function with the signal of processing.

17. projector, it is used for having the optical projection system of signal conditioning package and this projector, this signal conditioning package will have been carried out the view data after the Flame Image Process and offer projector, this projector is to carrying out projection based on the image from the above-mentioned view data of above-mentioned signal conditioning package, it is characterized in that this projector comprises:

The equipment connecting portion of projector side, its realize with above-mentioned signal conditioning package between communicate by letter;

The decryption part of projector side, it uses decruption key that the above-mentioned Crypted password of input is decrypted by the Crypted password that the equipment connecting portion input of above-mentioned projector side is sent by above-mentioned signal conditioning package; And

The password detection unit of projector side, whether correct it have the clear crytpographic key judged after the above-mentioned deciphering function, and the output indication begins to carry out above-mentioned projection that above-mentioned projector institute should the carry out function with the signal of processing under the correct situation of above-mentioned clear crytpographic key.

18. signal conditioning package, it is used for having the optical projection system of this signal conditioning package and projector, this signal conditioning package will have been carried out the view data after the Flame Image Process and offer projector, this projector is to carrying out projection based on the image from the above-mentioned view data of above-mentioned signal conditioning package, it is characterized in that this signal conditioning package comprises:

The equipment connecting portion of signal conditioning package side, its realize with above-mentioned projector between communicate by letter;

The password generating unit of signal conditioning package side, its generation are used to judge the password that could begin to carry out the processing of projection usefulness; And

The signal conditioning package side add compact part, it is encrypted above-mentioned password, exports to projector by the Crypted password of the said equipment connecting portion after with above-mentioned encryption.

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