CN1758709A - Video image processing device and method - Google Patents

Abstract

A video image processing device and method, apply to a video image processing device with a linkage unit, after the video image processing device judges the linkage unit receives the video image signal from a video image reading device, judge whether a first predetermined signal terminal of the linkage unit has a predetermined voltage signal, if have the predetermined voltage signal, presume the linkage unit receives the video image signal with the first specification connector; on the contrary, if the predetermined voltage signal is not available, the video image processing device judges whether a second predetermined signal terminal of the connecting unit has a predetermined image signal, and if the predetermined image signal is available, the connecting unit is set to receive the video image signal by the second specification connector. Therefore, the video image processing device and the method can automatically switch the transmission specification of the connection unit according to the video image signal transmitted by the video image reading device.

Description

Video image processing device and method

technical field

The invention relates to video image signal transmission technology, especially a video image processing device and method supporting SCART interface specification.

Background technique

In order to meet consumers' demand for image quality, electronics companies continue to develop products with high-quality processing functions. For example, digital cameras have developed from 5 million pixels to 12 million pixels, and the disk storage method has changed from Video Compact Disc (Video Compact Disc) to 12 million pixels. ; VCD) developed into Digital Video Disc (Digital Versatile Disc; DVD) and so on. At the same time, in order to cooperate with these products with high-quality processing functions, electronics companies have also developed related equipment and electronic components to further enhance the performance of these products on high-quality processing. For example, Philips, a major home appliance manufacturer, has developed a series of devices that support RF signal input and receive various image signals (such as composite video (Composite Video), brightness, chroma, super video (S-Video)) input, etc. A multifunctional image processing chip is used to enhance the image effect played by video image processing devices (such as flat-screen TVs, LCD TVs, plasma TVs, etc.).

As far as the connectors used for the above-mentioned image signal input are concerned, most countries use the SCART interface as the input and output interface of the image signal. The SCART interface is a connector defined by the European Peritel organization, and its transmission content includes audio and video (Video and Audio) signal input and output, its specifications are divided into SCART1 connector and SCART2 connector, the number of transmission pins of the two connectors is 21, and the shape of the two connectors is also the same, the difference is only in the signal transmitted by some pins The SCART1 connector has pins (Pin) for transmitting composite video (Composite Video) and red, green and blue (RGB) signals, and the pin names corresponding to the pin numbers are shown in Figure 1 (A), while The SCART2 connector has pins for transmitting composite video and S-Video signals, and the pin names corresponding to the pin numbers are shown in Figure 1(B). The signals are the same. Since the SCART1 connector has pins for transmitting RGB signals, it can provide higher-quality transmission processing than the SCART2 connector. It should be noted here that the SCART1 connector and the SCART2 connector are existing image transmission connectors, so the signal transmitted by each pin will not be repeated here.

As shown in FIG. 2 , it is a schematic diagram illustrating the connection between an existing video image processing device 10 and a video image reading device (such as a DVD player, a VCD player, and a video recorder) 11 . Generally speaking, the video image processing device 10 has a SCART1 connector 100 and a SCART2 connector 101, which are used for users to select and match the specifications of the image signal output port 110 provided by the video image reading device 11. Corresponding to the SCART1 connector 100 or SCART2 connector 101 of the video image processing device 10, for example, the image signal output port 110 of the video image reading device 11 adopts the SCART1 connector specification, then the user needs to output the image signal The port 110 is connected to the SCART1 connector 100 of the video image processing device 10; on the contrary, if the image signal output port 110 of the video image reading device 11 adopts the SCART2 connector specification, the user needs to output the image signal The port 110 is connected to the SCART2 connector 101 of the video image processing device 10 . Thereby, the video image processing device 10 can judge the image signal transmitted from the image signal output port 110 of the video image reading device 11 through the SCART1 connector 100 or the SCART2 connector 101 .

However, since the video image processing device 10 has the SCART1 connector 100 and the SCART2 connector 101 at the same time, it is easy for the user to mistakenly have the image signal output port 110 that supports the high-quality transmission standard (that is, supports the SCART1 connector transmission standard). Plugged into the SCART2 connector 101 of the video image processing device 10, it cannot process high-quality images.

Therefore, how to provide a video image processing device and method that can effectively prevent the user from misplugging the connector of the video image reading device and the video image processing device is an important issue to be solved in the industry.

Contents of the invention

In view of the shortcomings of the prior art described above, the main purpose of the present invention is to provide a video image processing device and method for providing a single SCART interface connector, which can effectively prevent the user from connecting the video image reading device Connector and the connector of the video image processing device are inserted incorrectly.

To achieve the above and other objectives, the present invention discloses a video image processing device and method. The video image processing device is electrically connected to a video image reading device, and the video image processing device at least includes: a connection unit electrically connected to the video image sending unit of the video image reading device for receiving the video image The video image signal sent by the video image sending unit of the reading unit; a processing unit electrically connected to the connection unit, and the processing unit judges that the connection unit receives the video image sending unit from the video image reading device The transmitted video image signal outputs a video image processing request; a voltage signal judging component electrically connected to the processing unit, when the processing unit outputs the video image processing request, the voltage signal judging component judges the connection unit Whether a first predetermined signal terminal of a predetermined signal terminal receives a predetermined voltage signal, if the predetermined voltage signal is received, the processing unit sets the connection unit to receive video image signals with a first specification connector; and an electrical connection to the processing The video image signal judging component of the unit, when the processing unit judges that the voltage signal received by the first predetermined signal terminal of the connecting unit is smaller than the predetermined voltage signal, the video image signal judging component is made to judge a second signal of the connecting unit Whether the predetermined signal terminal receives a predetermined image signal, if so, the processing unit sets the connection unit to receive the video image signal through the connector of the second specification.

The video image processing method is applied to a video image processing device with a connection unit, and the video image processing device receives a video image signal from a video image reading device by means of the connection unit. The image processing method at least includes the following steps: the video image processing device judges whether the connection unit receives the video image signal transmitted from the video image reading device; After taking the video image signal sent by the device, it is judged whether a first predetermined signal terminal of the connection unit has a predetermined voltage signal, and if it has the predetermined voltage signal, the connection unit is set to receive the video image with the first standard connector signal; and after the video image processing device judges that the connection unit receives the video image signal transmitted from the video image reading device, it judges whether a second predetermined signal terminal of the connection unit has a predetermined image signal, if it has The predetermined image signal sets the connection unit to receive the video image signal through the connector of the second specification.

The video image processing device and method of the present invention are based on the common points of the SCART1 connector and the SCART2 connector to provide a single SCART interface connector with transmission specifications supporting the SCART1 connector and the SCART2 connector. Therefore, the single SCART interface The connector can effectively prevent users from plugging in by mistake, and can also make video image processing devices (such as flat-screen TVs, LCD TVs, plasma TVs, etc.) The transmission specification of the video image signal output connector (that is, the SCART1 connector or the SCART2 connector) provided by the player and the video recorder) automatically switches the transmission specification to provide the user with an optimal image quality output process in a timely manner video image processing device.

Description of drawings

FIG. 1(A) is a diagram illustrating the pin numbers and corresponding pin names of the existing SCART1 connector;

Figure 1(B) is a diagram illustrating the pin numbers and corresponding pin names of the existing SCART2 connector;

FIG. 2 is a schematic diagram illustrating the connection between an existing video image processing device and a video image reading device;

FIG. 3 is a schematic block diagram of the basic structure required for the use of the video image processing device and the video image reading device in conjunction with the present invention; and

FIG. 4 is a schematic diagram illustrating the operation flow of the video image processing device of the present invention.

Detailed ways

The implementation of the present invention is described below through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and various modifications and changes can be made to the details in this specification based on different viewpoints and applications without departing from the spirit of the present invention.

The following examples are to further describe the present invention in detail, but not to limit the scope of the present invention in any way.

FIG. 3 is a schematic block diagram illustrating the basic structure of the video image processing device 20 and a video image reading device 25 used in conjunction with the present invention. The video image processing device 20 of the present invention is devices such as flat-panel TV, LCD TV, plasma TV, etc., and this video image reading device 25 is devices such as DVD player, VCD player and video recorder, and the video image reading device The device 25 has a video image sending unit 250, which is an existing SCART1 connector or SCART2 connector, so that the video image reading device 25 outputs the read video image signal through the video image sending unit 250 .

The video image processing device 20 of the present invention at least includes a microprocessor unit (MicroProcessing Unit; hereinafter referred to as MPU) 21, a connection unit 22, a storage unit 23 and a video image output unit 24. To simplify the drawings and descriptions, the architecture here only shows components related to the present invention, and other irrelevant components, such as speakers, transformers, etc., are not shown in the drawings. Moreover, the MPU 21 is used to control the overall operation of the video image processing device, and it is a control core of a general electronic device, and it is also a well-known component for those skilled in electronic technology, so its function and internal structure will not be further described in detail below.

The connection unit 22 is a connector conforming to the SCART interface, that is, the shape and the number of pins of the connection unit 22 are all the same as the existing SCART1 connector and the SCART2 connector, so as to be compatible with the video image reading device 25 is connected to the video image sending unit 250 so that the video image processing device 20 receives the video image signal read from the video image reading device 25 . The connection unit 22 integrates the common characteristics of the existing SCART1 connector and SCART2 connector, so that the MPU21 can recognize the video image transmission that is electrically connected to the connection unit 22 through the program module stored in the storage unit 23. The video image transmission specification of the unit 250 , that is, the video image processing device 20 can recognize that the video image sending unit 250 is a SCART1 connector specification or a SCART2 connector specification.

Since the difference between the pin signals of the SCART1 connector and the SCART2 connector is only the pin numbers 7, 11, 15, 16 and 18 (please refer to Figure 1(A) and Figure 1(B)), and these pin numbers The pin numbers 7, 11, 16 and 18 do not have signal characteristics in the SCART2 connector specification; moreover, when receiving higher-quality video image signals (ie RGB signals) input, the SCART1 connectors The pin number 16 has a voltage of 1 volt to 3 volts; conversely, when receiving a video image signal of general quality (that is, a composite video (Composite Video) signal) input, the pin number 16 in the SCART1 connector is There is a tiny voltage of 0 volts to 0.4 volts present. Therefore, the video image processing device of the present invention can recognize that the video image sending unit 250 is a SCART1 connector specification or a SCART2 connector specification by virtue of the voltage difference characteristic.

The storage unit 23 is a memory for the MPU21 to access and execute program modules, such as including a read-only memory (Read Only Memory; ROM), a random access memory (Random AccessMemory; RAM) or an electrically erasable programmable memory. Read memory (Electrically Erasable Programmable Read-Only Memory; EEPROM), etc., is used to store various program modules required for the operation of the video image processing device 20 of the present invention. The storage unit 23 of the present embodiment stores a voltage signal judging component 230, a Video image discrimination component 231 and a video image playback component 232, through these components, this video image processing device 20 can be provided according to the transmission specification of the video image sending unit 250 provided by the video image reading device 25 electrically connected with it (ie SCART1 connector or SCART2 connector) automatically switch the transmission interface of the connection unit 22 to timely provide users with optimized image quality output processing (the switching process will be described in detail below).

As shown in FIG. 4 , it is a schematic diagram illustrating the operation flow of the video image processing device of the present invention. Here, please also refer to the schematic diagram of the basic structure of the video image processing device of the present invention shown in FIG. 3 . When the video image processing device 20 is in a state of starting up or receiving a video image signal from an external device (such as a video image reading device 25), it immediately proceeds to step S1, and the video image processing device 20 makes the MPU21 determine that it is electrically connected Whether the connecting unit 22 of the connected unit 22 receives the video image signal sent from the video image reading device 25, if so, proceeds to step S2; otherwise, if the MPU21 judges that the connecting unit 22 has not received any video image signal input , the step S1 is still carried out continuously.

In the step S2, after the MPU21 of the video image processing device 20 judges that the connection unit 22 has received the video image signal from the video image sending unit 250 of the video image reading device 25, the MPU21 makes the voltage The signal judging component 230 judges whether the pin number 16 of the connection unit 22 has a voltage signal of 1 volt to 3 volts, and if so, proceeds to step S3; otherwise, if the voltage signal judging component 230 judges that the connection unit If the pin number 16 of the 22 does not have a voltage signal of 1 volt to 3 volts (or it is determined that the pin number 16 of the connection unit 22 has a voltage signal of less than 1 volt), then proceed to step S4.

In the step S3, when the voltage signal judging component 230 judges that the pin number 16 of the connection unit 22 has a voltage signal of 1 volt to 3 volts, then the connection unit 22 is set to come in accordance with the specification of the SCART1 connector. Receive video image signal, and this MPU21 makes this video image playing component 232 carry out the broadcast of video image signal through the video image output unit 24 of liquid crystal display for example according to the received video image signal, can be for the user to enjoy the high-quality video image Play, then return to the step S2.

In the step S4, when the voltage signal judging component 230 judges that the pin number 16 of the connection unit 22 does not have a voltage signal of 1 volt to 3 volts (or judges that the pin number 16 of the connection unit 22 pin has a voltage signal less than 1 volt), then the MPU21 makes the video image discrimination component 231 judge whether the pin of the pin number 20 of the connection unit 22 has such a composite video signal, if so, then proceed to step S5; otherwise If the video image judging component 231 judges that the pin number 20 of the connecting unit 22 does not have, for example, a composite video signal, then return to step S2.

In the step S5, when the video image judging component 231 judges that the pin number 20 of the connection unit 22 has, for example, a composite video signal, the connection unit 22 is set to receive the video image signal with the specification of the SCART2 connector. , and the MPU21 makes the video image playing component 232 play the video image signal through the video image output unit 24 of the liquid crystal display according to the received video image signal, so that the user can obtain the playback of the general quality video image, and then Return to this step S2.

As can be seen above, the video image processing device and method of the present invention are based on the common points of the SCART1 connector and the SCART2 connector to provide a single connection unit 22 with transmission specifications supporting the SCART1 connector and the SCART2 connector, so the connection unit 22 can support composite video, red-green-blue and S-video signals at the same time, and can provide a SCART interface connector supporting SCART1 connector and SCART2 connector without adding additional hardware cost.

The above-mentioned embodiments are only illustrative to illustrate the principles and effects of the present invention, and are not intended to limit the present invention. For example, the connection unit 22 of the video image processing device and method of the present invention, and the transmission interface specification of the video image sending unit 250 of the video image reading device 25 are not limited to the existing SCART interface specification, and can also be applied to those with the same The dimensions, the same number of pins, and the connection interface specifications of the pin transmission signals are approximately the same; and the video image processing device 20 can use a processing unit such as a controller instead of the MPU21 as the control core, that is, according to the implementation type depends. Anyone skilled in the art can modify and change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention shall be defined by the claims of the present application described later.

Claims (20)

1. A video image processing device, which is electrically connected with a video image reading device, the video image processing device at least includes: A connection unit, which is electrically connected to the video image sending unit of the video image reading device, for receiving the video image signal transmitted by the video image sending unit of the video image reading device; A processing unit, which is electrically connected to the connection unit, is used to output a video image processing request when it is judged that the connection unit has received a video image signal from the video image sending unit of the video image reading device; A voltage signal judging component, which is electrically connected to the processing unit, so that when the processing unit outputs the video image processing request, the voltage signal judging component judges whether a first predetermined signal terminal of the connection unit has a predetermined voltage signal, if the first predetermined signal terminal has the predetermined voltage signal, then the processing unit sets the connection unit to receive the video image signal with the connector of the first specification; and A video image signal judging component, which is electrically connected to the processing unit, so that when the processing unit judges that the voltage signal of the first predetermined signal terminal of the connecting unit is smaller than the predetermined voltage signal, the video image signal judging component It is judged whether a second predetermined signal terminal of the connection unit has a predetermined image signal, and if the second predetermined signal terminal has the predetermined image signal, the processing unit sets the connection unit to receive the video image signal through the second specification connector. 2. The video image processing device according to claim 1, characterized in that the video image processing device also includes a video image output unit, which is electrically connected to the processing unit, and the video image output unit is connected to the processing unit according to The output processing of the video image signal is performed according to the connector specification set by the unit. 3. The video image processing device according to claim 2, wherein the connecting unit is a SCART1 standard connector. 4 . The video image processing device according to claim 3 , wherein the first predetermined signal terminal refers to a pin whose pin number is 16 of the first specification connector. 5. The video image processing device as claimed in claim 4, wherein the first standard connector is a SCART1 standard connector. 6. The video image processing device as claimed in claim 5, wherein the predetermined voltage signal refers to a voltage value between 1 volt and 3 volts. 7 . The video image processing device according to claim 6 , wherein the second predetermined signal terminal refers to a pin whose pin number is 20 of the second standard connector. 8 . 8. The video image processing device as claimed in claim 7, wherein the second standard connector is a SCART2 standard connector. 9. The video image processing device as claimed in claim 8, wherein the predetermined image signal is a composite video image signal. 10 . The video image processing device according to claim 1 , wherein the connection unit and the first standard connector are SCART1 standard connectors, and the second standard connector is a SCART2 standard connector. 11 . 11. A video image processing method, which is applied to a video image processing device with a connection unit, by means of which the video image processing device receives a video image signal transmitted from a video image reading device, The video image processing method at least includes the following steps: The video image processing device judges whether the connection unit receives the video image signal transmitted from the video image reading device; After the video image processing device judges that the connection unit receives the video image signal from the video image reading device, it judges whether a first predetermined signal terminal of the connection unit has a predetermined voltage signal, if it has the predetermined voltage The signal sets the connecting unit to receive the video image signal through the connector of the first specification; and After the video image processing device judges that the connection unit receives the video image signal transmitted from the video image reading device, it judges whether a second predetermined signal terminal of the connection unit has a predetermined image signal, if it has the predetermined image The signal sets the connecting unit to receive the video image signal through the connector of the second specification. 12. The video image processing method according to claim 11, characterized in that, the video image processing device further comprises a video image output unit, and the video image output unit is configured according to the connector specification set by the video image processing device. Output processing of video image signals. 13. The video image processing method according to claim 12, wherein the connection unit is a SCART1 standard connector. 14 . The video image processing method according to claim 13 , wherein the first predetermined signal terminal refers to a pin whose pin number is 16 of the first standard connector. 15 . 15. The video image processing method according to claim 14, wherein the first standard connector is a SCART1 standard connector. 16. The video image processing method according to claim 15, wherein the predetermined voltage signal refers to a voltage value between 1 volt and 3 volts. 17 . The video image processing method according to claim 16 , wherein the second predetermined signal terminal refers to a pin whose pin number is 20 of the second specification connector. 18. The video image processing method according to claim 17, wherein the second standard connector is a SCART2 standard connector. 19. The video image processing method as claimed in claim 18, wherein the predetermined image signal is a composite video image signal. 20. The video image processing method according to claim 12, wherein the connection unit and the first standard connector are SCART1 standard connectors, and the second standard connector is a SCART2 standard connector.

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