JP2013073039A - Electronic apparatus, display device, display system and method for controlling display device - Google Patents

Abstract

An electronic device, a display device, a display system, and a display device control method capable of simplifying an operation restriction state, that is, a procedure for releasing a lock.
In a projector, an illuminance sensor that detects the brightness of external light, a cancellation pattern generation unit that generates a brightness change pattern for canceling an operation restriction based on input information, and a projector 10 when the brightness change detected by the illuminance sensor 20 matches the brightness change pattern for release generated by the release pattern generation unit 11B. An operation restriction unit 11C for releasing the operation restriction.
[Selection] Figure 2

Description

  The present invention relates to an electronic device, a display device, a display system, and a display device control method.

  2. Description of the Related Art Conventionally, there has been known an electronic device having a lock function that restricts execution of a function and releases the restriction on condition that a regular password is input. In these electronic devices, since it is troublesome to input a password, an electronic device that cancels the restriction by using another electronic device instead of inputting the password has been proposed (for example, see Patent Document 1). . The device described in Patent Document 1 inputs and registers a password code for releasing the security lock as a light / dark pattern by an operation such as hiding the illuminance sensor with a finger, and the illuminance sensor is registered according to the registered pattern. The security lock can be released by changing the detection value of the illuminance sensor by hiding it with a finger.

JP 2010-10750 A

In the conventional configuration described above, it is difficult to know exactly what pattern is detected and registered by the illuminance sensor. Therefore, it is necessary to carefully operate the registered pattern so that the registered pattern matches the registered pattern.
The present invention has been made in view of the above-described circumstances, and an object thereof is to make it possible to more easily and reliably use an operation restriction function that restricts the function of an electronic device.

In order to achieve the above object, according to the present invention, in an electronic device, an external light detection means for detecting the brightness of external light and a brightness change pattern for releasing the operation restriction are generated based on input information. A release pattern generating means that controls the operation of the electronic device, and in the operation restricted state of the electronic device, a change in brightness detected by the external light detecting means is generated by the release pattern generating means. And an operation limiting means for canceling the operation limitation when the brightness change pattern is adapted.
According to the present invention, the operation of the electronic device is restricted, and the brightness of the external light detected by the electronic device is changed to match the brightness change pattern generated based on the input information. The restriction can be lifted. Moreover, since the intended brightness change pattern can be generated based on the input information, the reproducibility of the release of the operation restriction and the certainty of the information necessary for the release can be improved. As a result, the operation restriction function can be used more easily and reliably.

According to the present invention, in the electronic apparatus, a display unit that displays an image, a display control unit that controls a display state of the display unit based on brightness of external light detected by the external light detection unit, It is characterized by being comprised as a display apparatus provided with.
According to the present invention, an operation restriction function that can be used easily and reliably can be realized by using the function of detecting the brightness of external light in order for the display device to perform display control.

According to the present invention, the electronic device further includes a cancellation pattern display control unit that causes the display unit to perform display according to a cancellation brightness change pattern generated by the cancellation pattern generation unit.
According to the present invention, the generated brightness change pattern for release can be confirmed by display. Further, the displayed brightness change pattern is captured or detected by another device, for example, and reproduced so that the external light detection means can be detected by the other device, thereby restricting the operation of the other device. Can be used for release.

In order to achieve the above object, according to the present invention, in the display device, the operation is limited based on the display means for displaying the image, the external light detection means for detecting the brightness of the external light, and the input information. A release pattern generating means for generating a brightness change pattern for release of the display, and the operation of the display device is restricted, and in the operation restricted state of the display device, a change in brightness detected by the external light detecting means is detected. An operation restriction unit for releasing the operation restriction when the release change pattern generated by the release pattern generation unit is adapted, and the release pattern generated by the release pattern generation unit according to a predetermined input operation. Release pattern display control means for displaying the brightness change pattern.
According to the present invention, the operation of the display device is restricted, and the brightness of the external light detected by the display device is changed to match the brightness change pattern generated based on the input information. The restriction can be lifted. Moreover, since the intended brightness change pattern can be generated based on the input information, the reproducibility of the release of the operation restriction and the certainty of the information necessary for the release can be improved. As a result, the operation restriction function can be used more easily and reliably.

In order to achieve the above object, the present invention includes a display device and a portable terminal used in combination with the display device. The display device includes display means for displaying an image, and external light. Outside light detection means for detecting brightness, release pattern generation means for generating a brightness change pattern for releasing action restriction based on input information, operation of the display device is limited, and the display device In the operation restriction state, when the brightness change detected by the outside light detection means matches the release brightness change pattern generated by the release pattern generation means, the operation restriction means for releasing the operation restriction And a release pattern display control means for causing the display means to display a release brightness change pattern generated by the release pattern generation means in response to a predetermined input operation, and the portable terminal Imaging means for photographing the brightness change pattern for release displayed by the display device; and display means for displaying the brightness change pattern for release photographed by the imaging means according to an input operation. It is characterized by.
According to the present invention, the operation of the display device is restricted, and the brightness of the external light detected by the display device is changed to match the brightness change pattern generated based on the input information. The restriction can be lifted. Moreover, since the intended brightness change pattern can be generated based on the input information, the reproducibility of the release of the operation restriction and the certainty of the information necessary for the release can be improved. Furthermore, the generated brightness change pattern for release can be confirmed by display, and the operation restriction of the display device can be easily released using a portable terminal that has captured the displayed brightness change pattern. As a result, the operation restriction function can be used more easily and reliably.

In order to achieve the above object, the present invention provides a control method for a display device, comprising: a display unit that displays an image; and an external light detection unit that detects the brightness of external light. A brightness change pattern for canceling the operation restriction is generated based on the information, the operation of the display device is restricted under a predetermined condition, and the brightness detected by the outside light detection means in this operation restricted state When the change in brightness matches the brightness change pattern for release generated by the release pattern generation means, the operation restriction is released and the brightness change pattern for release is displayed according to a predetermined input operation. It is characterized by doing.
According to the present invention, the operation of the display device is restricted, and the brightness of the external light detected by the display device is changed to match the brightness change pattern generated based on the input information. The restriction can be lifted. Moreover, since the intended brightness change pattern can be generated based on the input information, the reproducibility of the release of the operation restriction and the certainty of the information necessary for the release can be improved. Furthermore, the generated brightness change pattern for release can be confirmed by display, and the displayed brightness change pattern is photographed or detected by, for example, another device and detected by the external light detection means by the other device. By reproducing as much as possible, the operation restriction of the display device can be easily released using the other device. As a result, the operation restriction function can be used more easily and reliably.

  According to the present invention, it is possible to more easily and reliably use an operation restriction function that is released by using a change in brightness.

It is the figure which showed the outline | summary of the display system which concerns on 1st Embodiment of this invention. It is the block diagram which showed the structure of the display system. It is the figure which showed the example of the brightness change pattern for cancellation | release of operation restrictions. It is the flowchart which showed the procedure of change control of a color mode. It is the flowchart which showed the procedure of the process in a projector. It is the flowchart which showed the procedure of the process in a portable terminal. It is the flowchart which showed the procedure of the process which concerns on 2nd Embodiment of this invention.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
<First Embodiment>
FIG. 1 is a diagram illustrating an overview of a display system 100 according to the first embodiment of the present invention. FIG. 1A is a diagram illustrating a state before the portable terminal 30 is closely attached to the projector 10. FIG. 1B is a diagram illustrating a state in which the mobile terminal 30 is in close contact with the projector 10.
As shown in FIG. 1, the display system 100 according to the present embodiment includes a projector 10 (electronic device) (display device) and a mobile terminal 30. The projector 10 includes a projection optical system 13C, an illuminance sensor 20, an operation panel 21, and a remote control light receiving unit 22 which will be described later. The portable terminal 30 includes a display panel 35, a camera 37, a switch unit 39, and a touch screen 40 which will be described later. In the display system 100 according to the present embodiment, as shown in FIG. 1A, the mobile terminal 30 is placed on the projector 10 as indicated by an arrow P, and as shown in FIG. 30 display panels 35 are opposed to the illuminance sensor 20 of the projector 10. By causing the display panel 35 to face the illuminance sensor 20, the display panel 35 of the portable terminal 30 is illuminated or darkened based on a brightness change pattern for release described later, that is, white or black is displayed. The illuminance sensor 20 can detect the brightness change pattern for release.

FIG. 2 is a block diagram showing the configuration of the display system 100.
First, the apparatus configuration of the projector 10 will be described.
As shown in FIG. 2, the projector 10 is connected to an external image supply device such as a PC or a DVD player, and includes an I / F (interface) 23 to which image data is input. The I / F 23 includes a USB interface, a wired or wireless LAN interface, an HDMI connector conforming to the HDMI (registered trademark) standard, and an interface circuit. The I / F 23 includes a VGA terminal to which an analog video signal is input, an S video terminal to which a composite video signal such as DVI (Digital Visual Interface), NTSC, PAL, and SECAM is input. An RCA terminal to which a video signal is input, a D terminal to which a component video signal is input, and an interface circuit that inputs and outputs signals through these terminals may be provided.

  The projector 10 includes a projection unit 13 (display unit) that forms an optical image roughly and an image processing system that electrically processes an image signal input to the projection unit 13. The projection unit 13 includes an illumination optical system 13A, a light modulation device 13B including a liquid crystal panel, and a projection optical system 13C. The illumination optical system 13A includes a light source including a xenon lamp, an ultra-high pressure mercury lamp, an LED (Light Emitting Diode), and the like. Further, the illumination optical system 13A may include a reflector for guiding the light emitted from the light source to the light modulation device 13B and an auxiliary reflector, and a lens group (not shown), a polarizing plate, Or you may provide the light control element etc. which reduce the light quantity of the light which the light source emitted on the path | route which reaches the light modulation apparatus 13B.

  The light modulation device 13B is configured to include, for example, a transmissive liquid crystal panel, and forms an image on the liquid crystal panel in response to a signal from an image processing system described later. In this case, the light modulation device 13B includes three liquid crystal panels corresponding to the three primary colors of RGB in order to perform color projection, and the light from the illumination optical system 13A is separated into three color lights of RGB. Enters each corresponding liquid crystal panel. The color light modulated by passing through each liquid crystal panel is synthesized by a synthesis optical system such as a cross dichroic prism and emitted to the projection optical system 13C.

  The light modulation device 13B is not limited to the configuration using three transmissive liquid crystal panels, and for example, it is possible to use three reflective liquid crystal panels, or one liquid crystal panel and a color wheel. A combination system, a system using three digital mirror devices (DMD), a system combining one digital mirror device and a color wheel, or the like may be used. Here, when only one liquid crystal panel or DMD is used as the light modulation device 13B, a member corresponding to a composite optical system such as a cross dichroic prism is unnecessary. In addition to the liquid crystal panel and the DMD, any configuration that can modulate the light emitted from the light source can be used without any problem.

The projection optical system 13C includes a zoom lens that performs enlargement / reduction of a projected image and a focus adjustment, a zoom adjustment motor that adjusts the degree of zoom, a focus adjustment motor that performs focus adjustment, and the like. The projection optical system 13C projects the incident light modulated by the light modulator 13B onto the screen SC using a zoom lens.
The projection unit 13 includes a projection optical system drive unit 18 that drives each motor included in the projection optical system 13C according to the control of the control unit 11, and a light source drive unit that drives a light source included in the illumination optical system 13A according to the control of the control unit 11. 14 is connected.

  The image processing system is configured around a control unit 11 that controls the entire projector 10 in an integrated manner. The storage unit 12 stores data processed by the control unit 11 and a control program 12A executed by the control unit 11, and an illuminance sensor 20. (External light detection means), an input processing unit 19 for detecting input via the operation panel 21 and the remote control light receiving unit 22, an image processing unit 15 for processing an input image input from the I / F 23, and an image processing unit 15 A light modulation device driving unit 17 that drives the light modulation device 13B based on the output image signal is provided.

  The control unit 11 controls each unit of the projector 10 by reading and executing the control program 12 </ b> A stored in the storage unit 12. The control unit 11 detects the brightness of the environment in which the projector 10 is installed and the content of the operation performed by the user based on the input signal input from the input processing unit 19, and the image processing unit according to this input 15, the light modulation device driving unit 17, the projection optical system driving unit 18, and the light source driving unit 14 are controlled, and the projection unit 13 projects an image on the screen SC.

An illuminance sensor 20 that detects the brightness of the environment in which the projector 10 is installed is installed in the main body of the projector 10. In the main body of the projector 10, an operation panel 21 including various switches and indicator lamps for operation by a user is disposed. The operation panel 21 is connected to the input processing unit 19, and the input processing unit 19 appropriately lights or blinks the indicator lamp of the operation panel 21 according to the operation state and setting state of the projector 10 according to the control of the control unit 11. . When the switch of the operation panel 21 is operated, an operation signal corresponding to the operated switch is output from the input processing unit 19 to the control unit 11.
The projector 10 has a remote controller (not shown) used by the user. The remote control includes various buttons such as 10 keys, and transmits an infrared signal in response to the operation of these buttons. In the main body of the projector 10, a remote control light receiving unit 22 that receives an infrared signal emitted from the remote control is disposed. The remote control light receiving unit 22 decodes the infrared signal received from the remote control, generates an operation signal indicating the operation content of the remote control, and outputs the operation signal to the control unit 11.

An image processing unit 15 is connected to the I / F 23. The image processing unit 15 acquires image data input from the image supply device. The image processing unit 15 determines whether the image signal is analog image data or digital image data, identifies the data format of the digital image data, and performs analog-to-digital conversion of the analog input signal when the analog image signal is input. To output digital image data.
The image processing unit 15 performs a resolution conversion process or the like that converts the image data of the input image into data having a resolution that conforms to the specifications of the liquid crystal panel of the light modulation device 13B. The display image is expanded in the frame memory 16 and the expanded display image is output to the light modulator driving unit 17. The light modulation device driving unit 17 drives the light modulation device 13 </ b> B based on the display image input from the image processing unit 15. Accordingly, the light modulation device 13B is driven by the control of the control unit 11, and the image light modulated by the light modulation device 13B is projected as a projection image on the screen SC via the projection optical system 13C.

The control unit 11 executes a control program 12A to display a display control unit 11A (display control unit), a release pattern generation unit 11B (release pattern generation unit), an operation restriction unit 11C (operation restriction unit), and a release pattern display control unit. It functions as 11D (release pattern display control means).
The display control unit 11A controls the image processing unit 15 to develop an image based on the image data input to the I / F 23 in the frame memory 16 and also to an optical modulation device based on the image developed in the frame memory 16 The drive unit 17 is controlled to drive the liquid crystal panel of the light modulation device 13 </ b> B, thereby causing the projection unit 13 to project the image light modulated by the liquid crystal panel.

The release pattern generation unit 11B activates a program for generating a brightness change pattern for releasing the operation restriction of the projector 10 from the code, and the brightness for releasing the operation restriction of the projector 10 based on the registered password code. Generate a change pattern. Here, the code is an alphanumeric character or a character string that can be input by a numeric keypad that the user can definitely recognize.
The operation restriction unit 11C controls a lock function that restricts the operation of the projector 10. When the projector 10 is in the locked state in which the operation is restricted, the change in brightness detected by the illuminance sensor 20 matches the release change pattern generated by the release pattern generation unit 11B. In some cases, the operation restriction, that is, the lock is released. The operation restriction unit 11C also releases the operation restriction, that is, the lock even when a password is input from the remote controller.
The cancellation pattern display control unit 11D causes the projection unit 13 to project the brightness change pattern for cancellation generated by the cancellation pattern generation unit 11B in response to a predetermined input operation.

Next, the device configuration of the mobile terminal 30 will be described.
The mobile terminal 30 includes a control unit 11 that controls the entire mobile terminal 30 in an integrated manner. In addition, the mobile terminal 30 includes a storage unit 12 that stores data processed by the control unit 31, a control program 32A executed by the control unit 31, and moving image data 32B. In addition, the mobile terminal 30 includes a wireless communication unit 33 that performs wireless communication with an external device. The portable terminal 30 includes a display unit 34 (display unit) that displays an image on a display panel 35 such as a liquid crystal panel based on the image data generated by the control unit 31. In addition, the mobile terminal 30 includes an imaging unit 36 (imaging unit) that generates still image data and moving image data based on an image captured by the camera 37 and outputs the data to the control unit 31. The camera 37 is installed in the mobile terminal 30 main body. In addition, the mobile terminal 30 includes an operation detection unit 38 that outputs data corresponding to the operation content to the control unit 31 based on the user's operation on the switch unit 39 and the touch screen 40. The switch unit 39 is a mechanical button installed on the mobile terminal 30 body. The touch screen 40 is placed over the display panel 35 (FIG. 1). The control unit 31 displays a soft keyboard displayed on the display panel 35 and buttons assigned with various functions. Further, the control unit 31 detects a touch operation by the user on the touch screen 40 as coordinate data. And the control part 31 performs control corresponding to the button displayed on the display panel 35 based on this coordinate data.

The control unit 31 functions as a display control unit 31A, a release pattern generation unit 31B, and an imaging control unit 31C by executing the control program 32A.
The display control unit 31 </ b> A causes the display panel 35 to display the release brightness change pattern photographed by the camera 37 in accordance with the input operation using the switch unit 39 and the touch screen 40 by the user.
The cancellation pattern generation unit 31B activates a program for generating a brightness change pattern for canceling the operation restriction of the projector 10 from the code, and based on the code input by the user using the switch unit 39 and the touch screen 40, the projector 10 A brightness change pattern for releasing the operation restriction is generated.
The imaging control unit 31C captures a moving image of the release brightness change pattern displayed by the projection unit 13 of the projector 10 and stores the captured moving image in the storage unit 32 as moving image data 32B.

Here, an example of the brightness change pattern for releasing the restriction on the operation of the projector 10 generated in the release pattern generation unit 31B of the mobile terminal 30 will be described.
When a 4-digit code from 0000 to 9999 in decimal notation is registered as a password for canceling the locked state of the projector 10, it becomes 4 digits from 0000 to 270F in hexadecimal and 4 bytes of data to be transmitted. If the data transfer is 20 [bits / second], the transfer time of 4 digits is 2 seconds, which may be considered as a practical performance. Therefore, even if the responsiveness of the illuminance sensor 20 is poor, it can be said that transfer of about 4 digits is sufficient. Even when a password is input by key operation of the remote controller, it takes about 1 second per digit, so the operation time is equal to or longer.
FIG. 3 is a diagram illustrating an example of a brightness change pattern for canceling the operation restriction of the projector 10.
As shown in FIG. 3, the control program 12 </ b> A of the portable terminal 30 needs to include a program that generates a brightness change pattern for releasing the operation restriction of the projector 10 from the code. After starting the program, the display panel 35 is displayed in white, that is, in a bright state (corresponding to 1) for about 2 seconds. This is because if the transmission of data is started simultaneously with the start of the program, the data transmitted until the portable terminal 30 is brought into close contact with the illuminance sensor 20 of the projector 10 becomes invalid. Put a waiting time of about 2 seconds. Since the operation state of the mobile terminal 30 is not visible after the mobile terminal 30 is brought into close contact with the projector 10, it is preferable to notify the start and end of data transmission with sound.
The operation on the projector 10 side is the same as that of general serial communication. The bright state of the display panel 35 of the portable terminal 30 is set to “1”, the dark state is set to “0”, and the bright state “1” is first detected. Next, a change from “1” to “0” is detected as a start bit. Thereafter, 8-bit data is acquired. If “1” is detected after receiving 8 bits of data, 1 byte (8 bits) of data is successfully received. If it is “0” after receiving 8 bits, a framing error occurs. Thereafter, the next 1-byte (8-bit) data is similarly received, and similarly 4-byte data is received. Then, it is determined whether or not the received 4-byte data matches the password registered in the projector 10, and if they match, the lock is released.
The above is an example of the brightness change pattern for canceling the operation restriction of the projector 10 generated in the cancel pattern generation unit 31B of the mobile terminal 30.

Next, color mode change control in the projector 10 will be described.
FIG. 4 is a flowchart showing the procedure of color mode change control in the projector 10.
As shown in FIG. 4, after starting projection of an image onto the screen SC by the projection unit 13 (Step S10), the control unit 11 detects brightness by the illuminance sensor 20 (Step S11). The control unit 11 selects a color mode based on the detected brightness (step S12), and changes the color mode when it is necessary to change the color mode as a result of the selection (step S13). At this time, when the projector 10 is installed in a bright place, the control unit 11 adjusts the image to be suitable for a bright place by, for example, enhancing the contrast and brightening the entire image. Conversely, when the projector 10 is installed in a dark place, for example, the image quality suitable for the dark place is set by, for example, reducing the brightness of the light source of the illumination optical system 13A or suppressing the contrast. Adjust to finish.
The color mode change control described above is repeatedly executed at predetermined time intervals while the projector 10 projects an image, and the color mode is selected according to the brightness of external light detected by the illuminance sensor 20. Thereby, the projector 10 can project an image on the screen SC with the optimum image quality by the projection unit 13.

Next, a processing procedure in the projector 10 will be described.
FIG. 5 is a flowchart showing a processing procedure in the projector 10.
As shown in FIG. 5, the control unit 11 determines whether or not the lock is valid when the projector is activated (step S20). When the projector is activated and the lock is valid (step S20; YES), the control unit 11 causes the projection unit 13 to project a password input waiting message on the screen SC (step S21). If the lock is not valid (step S20; NO), the projector 10 is activated as it is.
After projecting the password input waiting message on the screen SC, the control unit 11 determines whether there is an input from the display panel 35 of the portable terminal 30 to the illuminance sensor 20 of the projector 10 (step S22). When there is an input to the illuminance sensor 20 (step S22; YES), the controller 11 determines whether the input from the illuminance sensor 20 matches the registered pattern (step S23).
When the input from the illuminance sensor 20 matches the registered pattern (step S23; YES), the control unit 11 activates the projector 10 and when the input from the illuminance sensor 20 does not match the registered pattern (step S23). S23: NO), the projection unit 13 projects an error message on the screen SC (step S24). The control unit 11 determines whether the number of input trials for releasing the lock is a predetermined number or more (step S28). When the number of input trials for unlocking is equal to or greater than the predetermined number (step S28; YES), the control unit 11 causes the projection unit 13 to project an end message on the screen SC (step S29), and releases the lock. If the number of input trials is not equal to or greater than the predetermined number (step S28; NO), the process returns to step S22.

In addition, when there is no input to the illuminance sensor 20 (step S22; NO), the control unit 11 determines whether there is a key input from the remote controller (step S25). When there is a key input from the remote controller (step S25; YES), the control unit 11 determines whether a correct password has been input (step S26). When there is no key input from the remote controller (step S25; NO), the control unit 11 returns to step S22. . When the correct password is input (step S26; YES), the control unit 11 activates the projector 10. If the correct password has not been input (step S26; NO), the control unit 11 causes the projection unit 13 to project a password difference message on the screen SC (step S27), and proceeds to the processing of step 28 described above.
By the processing in the projector 10 described above, the unlocking procedure can be simplified.

Next, a processing procedure in the mobile terminal 30 will be described.
FIG. 6 is a flowchart showing a processing procedure in the mobile terminal 30.
As illustrated in FIG. 6, the control unit 31 uses the release pattern generation unit 31 </ b> B to change the brightness change pattern for releasing the operation restriction of the projector 10 based on a code input by the user using the switch unit 39 and the touch screen 40. Is generated (step S30). In the display control unit 31A, the control unit 31 sets the screen display of the display panel 35 to white, that is, shines (step S31), and waits for a predetermined time (step S32). In the display control unit 31A, the control unit 31 sets the screen display of the display panel 35 to white or black, that is, a lighted state or a darkened state, according to the generated brightness change pattern for canceling the operation restriction of the projector 10 (step S31). S33). The control unit 31 determines whether or not the display of the brightness change pattern for releasing the operation restriction of the projector 10 is completed (step S34). If completed, the process ends. If not completed, the process returns to step S33.
After the brightness change pattern for releasing the restriction on the operation of the projector 10 is generated by the processing in the mobile terminal 30 described above, the mobile terminal 30 only needs to be present, so there is a concern that the lock cannot be released by forgetting the password. Absent.

Second Embodiment
In the display system 100 according to the present embodiment, the processing for generating the release pattern is different from that of the first embodiment, but the apparatus configuration is the same as that of the first embodiment, and therefore the description of the apparatus configuration here is omitted. .
FIG. 7 is a flowchart showing a procedure of processing for generating a release pattern according to the second embodiment of the present invention.
As illustrated in FIG. 7, the control unit 11 of the projector 10 generates a brightness change pattern for canceling the operation restriction of the projector 10 based on the code input by the user using the remote control in the cancel pattern generation unit 11B. (Step S40). In the cancellation pattern display control unit 11D, the control unit 11 causes the projection unit 13 to project a white or black, that is, a bright image or a dark image, onto the screen SC according to the generated brightness change pattern for canceling the operation restriction of the projector 10 ( Step S41). The control unit 11 determines whether the display of the brightness change pattern for canceling the operation restriction of the projector 10 is completed (step S42). If completed, the process is terminated, and if not completed, the process returns to step S41.
In addition, the control unit 31 of the mobile terminal 30 captures a moving image of the image projected on the screen SC by the projection unit 13 of the projector 10 in step S31 described above with the camera 37 (step S50). The control unit 31 causes the imaging control unit 31C to generate moving image data 32B based on the moving image captured by the camera 37 and store the generated moving image data 32B in the storage unit 32 (step S51).
By the process of generating the release pattern described above, the brightness change pattern for releasing the restriction on the operation of the projector 10 is acquired simply by shooting a moving image of the image projected on the screen SC by the projection unit 13 of the projector 10. Therefore, even when the portable terminal 30 does not include a program for generating a brightness change pattern for canceling the operation restriction of the projector 10 from the code, that is, when the cancellation pattern generation unit 31B is not included, A brightness change pattern for canceling the operation restriction of the projector 10 can be generated.

  In addition, embodiment mentioned above does not limit this invention, It is also possible to apply this invention as an aspect different from the said embodiment. For example, in the above-described embodiment, in the projector 10, the illuminance sensor 20 that detects the brightness of external light, and the release pattern generation unit that generates the brightness change pattern for releasing the operation restriction based on the input information. 11B and the operation of the projector 10 are restricted, and the brightness change detected by the illuminance sensor 20 in the operation restricted state of the projector 10 matches the brightness change pattern for release generated by the release pattern generation unit 11B. And an operation restriction unit 11C for releasing the operation restriction. For this reason, the operation restriction of the projector 10 is executed, and the restriction of the operation is released by changing the brightness of the external light detected by the projector 10 so as to match the brightness change pattern generated based on the input information. can do. Moreover, since the intended brightness change pattern can be generated based on the input information, the reproducibility of the release of the operation restriction and the certainty of the information necessary for the release can be improved. As a result, the operation restriction function can be used more easily and reliably.

  Moreover, the projector 13 which displays an image, and the display control part 11A which controls the display state of the projector 13 based on the brightness of the external light detected by the illuminance sensor 20 are provided. Thereby, the function of the operation restriction that can be used easily and reliably can be realized by using the function of detecting the brightness of the external light in order for the projection unit 13 to perform display control.

  Moreover, the cancellation pattern display control part 11D which performs a display by the projection part 13 according to the brightness change pattern for cancellation | release produced | generated by the cancellation | release pattern production | generation part 11B was provided. Thereby, the generated brightness change pattern for release can be confirmed by display. Further, the displayed brightness change pattern is captured or detected by another device, for example, and reproduced so that the external light detection means can be detected by the other device, thereby restricting the operation of the other device. Can be used for release.

  Furthermore, in the said embodiment, it has the projector 10 and the portable terminal 30 used in combination with the projector 10, and the projector 10 is the projection part 13 which displays an image, and the illumination intensity which detects the brightness of external light Based on the sensor 20 and the input information, the release pattern generation unit 11B that generates a brightness change pattern for canceling the operation restriction, the operation of the projector 10 is restricted, and the illumination sensor When the change in brightness detected by 20 matches the release brightness change pattern generated by the release pattern generation unit 11B, the operation restriction unit 11C releases the operation restriction, and a predetermined input operation is performed. The release pattern for causing the projection unit 13 to display the release brightness change pattern generated by the release pattern generation unit 11B. The portable terminal 30 includes an imaging unit 36 that captures the brightness change pattern for cancellation displayed by the projector 10, and a cancellation terminal that is captured by the imaging unit 36 according to an input operation. And a display unit 34 for displaying a brightness change pattern. As a result, the operation restriction of the projector 10 is executed, and the operation restriction is released by changing the brightness of the external light detected by the projector 10 so as to match the brightness change pattern generated based on the input information. can do. Moreover, since the intended brightness change pattern can be generated based on the input information, the reproducibility of the release of the operation restriction and the certainty of the information necessary for the release can be improved. Furthermore, the generated brightness change pattern for release can be confirmed by display, and the operation restriction of the projector 10 can be easily released using the portable terminal 30 that has captured the displayed brightness change pattern. As a result, the operation restriction function can be used more easily and reliably.

  In addition, embodiment mentioned above does not limit this invention, It is also possible to apply this invention as an aspect different from the said embodiment. For example, in the above embodiment, the projector 10 is described as an example of the electronic device and the display device, but the present invention is not limited to this, and the electronic device is configured as a digital camera or a television, and the display device is configured as a television. Is also possible. The mobile terminal 30 can be configured by a mobile phone, a smartphone, or the like. In the above embodiment, the illuminance sensor 20 is described as an example of the external light detection unit. However, the present invention is not limited to this, and a camera included in an electronic device or a display device is used as the external light detection unit. It is also possible.

  DESCRIPTION OF SYMBOLS 10 ... Projector (electronic device, display device), 11A ... Display control part (display control means), 11B ... Release pattern production | generation part (release pattern production | generation means), 11C ... Operation restriction part (operation restriction means), 11D ... Release pattern Display control unit (release pattern display control unit), 13 ... Projection unit (display unit), 20 ... Illuminance sensor (external light detection unit), 30 ... Mobile terminal, 31 ... Control unit, 31A ... Display control unit, 31B ... Release Pattern generation unit, 31C ... imaging control unit, 34 ... display unit (display means), 35 ... display panel, 36 ... imaging unit (imaging means), 37 ... camera, 100 ... display system.

Claims (6)

In electronic equipment,
Outside light detecting means for detecting the brightness of outside light;
Cancellation pattern generation means for generating a brightness change pattern for canceling the operation restriction based on the input information;
The operation of the electronic device is restricted, and the change in brightness detected by the outside light detection means in the operation restricted state of the electronic device becomes the release brightness change pattern generated by the release pattern generation means. An operation restriction means for canceling the operation restriction when it is compatible;
An electronic device comprising:   The display means for displaying an image, and the display control means for controlling the display state of the display means based on the brightness of the external light detected by the external light detection means. The electronic device described.   The electronic apparatus according to claim 2, further comprising: a cancellation pattern display control unit that causes the display unit to perform display according to a cancellation brightness change pattern generated by the cancellation pattern generation unit. In the display device,
Display means for displaying an image;
Outside light detecting means for detecting the brightness of outside light;
Cancellation pattern generation means for generating a brightness change pattern for canceling the operation restriction based on the input information;
The operation of the display device is restricted, and in the operation restricted state of the display device, the change in brightness detected by the external light detection unit becomes the release brightness change pattern generated by the release pattern generation unit. An operation restriction means for canceling the operation restriction when it is compatible;
A cancellation pattern display control means for displaying a brightness change pattern for cancellation generated by the cancellation pattern generation means in response to a predetermined input operation;
A display device comprising: A display device and a mobile terminal used in combination with the display device;
The display device
Display means for displaying an image;
Outside light detecting means for detecting the brightness of outside light;
Cancellation pattern generation means for generating a brightness change pattern for canceling the operation restriction based on the input information;
The operation of the display device is restricted, and the change in brightness detected by the external light detection means in the operation restricted state of the display device matches the brightness change pattern for release generated by the release pattern generation means. Operation restriction means for releasing the operation restriction when
Cancellation pattern display control means for causing the display means to display a brightness change pattern for cancellation generated by the cancellation pattern generation means in response to a predetermined input operation,
The portable terminal is
Imaging means for photographing a brightness change pattern for cancellation displayed by the display device;
Display means for displaying a release brightness change pattern imaged by the imaging means in accordance with an input operation;
A display system characterized by A display device control method comprising: display means for displaying an image; and external light detection means for detecting the brightness of external light,
Based on the input information, generate a brightness change pattern for releasing the operation restriction,
The operation of the display device is restricted under a predetermined condition, and in this operation restricted state, the change in brightness detected by the external light detection means is a release brightness change pattern generated by the release pattern generation means. If it conforms to the
Displaying the release brightness change pattern according to a predetermined input operation;
A control method of a display device characterized by the above.

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