CN1797322A - Computer Image System and Processing Device - Google Patents

Abstract

The invention provides a new computer image system architecture. By adding an image processor to receive TV signal input and drive screen when the operation system is not started, TV signal can be received and displayed on the display panel under the condition of not starting up and not starting up the computer operation system. In addition, under the operation of the operation system, partial image processing is selectively returned to CPU or image graphic array operation, so that the computer screen can be used for playing TV and common computer.

Description

Computer Image System and Processing Device

technical field

The invention relates to a display system and device for watching TV programs on a computer screen, in particular to a display system architecture and device for playing TV signals without starting an operating system.

Background technique

With the development of information technology and the popularization of personal computers, computers have become household appliances like televisions and refrigerators, most of which are used for entertainment. In addition, in addition to playing games or playing audio-visual programs, watching TV programs is also a major application of the computer. These applications are all displayed on the screen through the image display system.

A desktop computer can receive TV signals and play TV programs on the monitor screen by adding a TV adapter box or a TV capture card between the monitor and the image display system (such as a display card to the monitor). In addition, the desktop computer monitor can be connected to an external power supply, so even if the computer is not turned on, you can still watch TV programs. However, the display system architecture of the current notebook computer cannot watch TV in the above-mentioned manner.

Referring to FIG. 1A, this figure illustrates the architecture of a conventional notebook computer image display system. In the computer system, the south bridge chip is responsible for the exchange of data between the central processing unit and peripheral devices. Image data stored in peripheral devices 100 such as hard disks, optical discs, networks, etc., are input to the south bridge chip 102 through the bus, and the north bridge chip 104 is responsible for the data between the memory 106, the central processing unit 108 or the video graphics array (VideoGraphic Array, VGA) 110 exchange. After the image data is processed by the video graphics array 110 and the central processing unit 108, a low voltage differential signal (Low Voltage DifferentialSignal, LVDS) electrical format drive signal (hereinafter referred to as a low voltage differential signal) is generated to drive the display panel 112 to Display the image on the screen.

In addition, some notebook computer graphics systems do not include the above-mentioned video graphics array device. As shown in Figure 1B, the image data is input to the central processing unit 108' by the south and north bridge chips (100', 102') for processing, and the north bridge chip 102' generates a low voltage differential signal to drive the display panel.

At present, the most common system device for notebook computers to receive TV signals is to use an external TV adapter box to convert TV data into image signals in computer display formats (such as de-interlacing, YCrCb chrominance difference signal pairing) RGB red, green and blue data conversion), after compression, enter the south and north bridge chips through the input and output interfaces such as Universal Serial Bus (Universal Serial Bus, USB). Afterwards, the video graphics array or central processing unit performs signal processing to drive the screen panel to display the TV image.

The difference between the TV adapter boxes used in desktop computers and notebook computers is that the former can be connected between the monitor screen and the display card, and the input TV image is processed and then directly output to the display screen; the latter screen driver must be displayed through the computer's image. system, and the TV signal input to the notebook computer through the I/O interface such as the universal bus is a signal in the computer image format after compression, and still needs to be processed by the video graphics array.

From the above, although a notebook computer can be connected to an external device such as a TV adapter box to play TV programs, the actual signal processing flow is completely different from that of a desktop computer. In addition, the notebook computer must be powered on to start the operating system in order to drive the LCD panel. However, many times users only want to watch TV programs and do not want to use computers. However, in the system architecture of the current notebook computer, the computer must be turned on, the operating system and the screen drive device must be started before the TV image can be played, which is very inconvenient to use.

Contents of the invention

Based on the above reasons, the present invention proposes a computer system architecture. If the original computer graphics system includes a video graphics array, by adding an image processor between the display panel and the video graphics array, the system can be operated without booting or starting the computer operating system. Under normal conditions, TV signals are received and displayed on the display panel.

The present invention also discloses a computer system architecture. If the computer image system does not include a video graphics array, by adding an image processor between the display panel and the north bridge chip, it can be used without booting up or starting the computer operating system. Receives and displays TV signals.

In addition, the present invention also discloses the structure of the above-mentioned image processor. The image processor can receive TV image data and drive the display panel to display the TV image without starting the operating system. If the operating system is started, different working modes can be switched to display computer image data or television images, no matter whether the video graphics array device is included or not.

The above image processor at least includes: an initialization control unit, a data conversion unit, a panel drive unit, a memory control unit, a switching control unit, an image compression unit, a data output interface, a data exchange interface and two selection module. The initialization control unit starts some computer devices without starting the operating system; the data conversion unit can convert the TV image into a computer image display format; the panel drive unit can generate low-voltage differential signals for driving the display panel; the memory control unit controls access to images The memory required for data and signal processing; the switching control unit can switch the current working mode of the computer to display computer or TV image data; the image compression unit can perform image compression processing, and transmit the compressed image data to the output interface, and output to other computers device. In addition, a read-only memory can also be added to store parameters of different TV signal systems to be compatible with different TV systems.

Description of drawings

1A and FIG. 1B are respectively a display system architecture diagram of a notebook computer with/without a video graphics array device;

FIG. 2A and FIG. 2B are display system architecture diagrams of a notebook computer with or without a video graphics array device disclosed in the present invention;

FIG. 3 is a preferred embodiment of the image processor architecture disclosed in the present invention;

FIG. 4A illustrates the signal processing flow of the image processor applied to a system including an image graphics array in a shutdown mode;

Fig. 4B illustrates that the image processor is applied to a system including an image graphics array, and the signal processing flow in the computer mode;

FIG. 4C illustrates the signal processing flow in TV mode when the image processor is applied to a system including an image graphics array;

FIG. 5 is another preferred embodiment of the image processor architecture disclosed in the present invention;

FIG. 6A illustrates the signal processing flow in shutdown mode when the image processor is applied to a system without an image graphics array;

FIG. 6B illustrates the signal processing flow in the computer mode when the image processor is applied to a system without an image graphics array;

FIG. 6C illustrates the signal processing flow in the TV mode when the image processor is applied to a system without an image graphics array; and

FIG. 7 is another preferred embodiment of the image processor architecture disclosed in the present invention.

Description of reference symbols

100, 100' Peripherals

102, 102' south bridge chip

104, 104' north bridge chip

106, 106' memory

108, 108' central processing unit

110, 110' video graphics array

200, 200' south bridge chip

202, 202' north bridge chip

204, 204' memory

206, 206' central processing unit

208 video graphics array

210, 210' display panel

212, 212' image processor

30 south bridge chip

31 north bridge chip

33, 53 memory

34, 54 video graphics array

36 image processor

38, 58 display panel

300, 500, 700 initialization control unit

302, 502, 702 data conversion unit

304, 504, 704 panel driver unit

306, 506, 706 memory control unit

308, 508, 708 switching control unit

310, 710 image compression unit

312, 712 data output interface

314, 514, 714 data exchange interface

330, 530 First Choice Module

332, 532 second option module

350 TV image data

352 Computer Image Data

354 panel drive signal

356 compressed image data

358 low voltage differential signal

732 selection module

Detailed ways

Some embodiments of the invention are described in detail below. However, the present invention can also be widely implemented in other embodiments except for the content described in detail, and the scope of the present invention is not limited, which is subject to the scope of subsequent patent applications.

Furthermore, the systems and devices disclosed in the present invention only describe the main components, and other non-main details or steps should be fully understood by those familiar with the related art; the drawings are not fully drawn for the sake of brevity.

In order to express the main features of the present invention concisely, some components are omitted in the drawings, such as TV signal input and output interfaces, low-voltage differential signal input ports, and the like. In addition, the TV signal includes video and audio parts, but the present invention emphasizes the computer image display system and image processing architecture, and does not consider the audio part for now. If you want to integrate the audio part into the same device, you can add an AC'97 interface, so that the audio part of the TV signal can be output through this interface, and the audio signal can be picked up by the south bridge chip and sent to the central processing unit or sound card device for processing.

FIG. 2A is an architecture of a notebook computer graphics system including a video graphics array (VGA), which adds an image processor between the display panel and the video graphics array. The new system architecture includes: south bridge chip 200 , north bridge chip 202 , memory 204 , central processing unit 206 , video graphics array 208 , display panel 210 , and an image processor 212 . Among them, the south bridge chip, north bridge chip, memory, central processing unit, and video graphics array are the core units of the notebook computer. Most of the data processing is carried out in this core unit group, including the processing of image data. The TV signal enters the image processor 212 through a TV image interface, such as an interface conforming to CCIR 601 or CCIR 656 standards. In the figure, only the connection relationship between the image data and each device is shown, and the arrows indicate the transmission direction of the input TV image data.

In addition to adding an image processor 212 to the above system, the power supply system of the notebook computer needs to be adjusted so that it can supply power to the display panel, sound card and other devices required for playing audio and video programs when the computer is not turned on. Its approach, for example, can add a switch button, especially as a power switch when you don't want to turn on the notebook computer operating system but want to watch TV programs. The button only provides power to the image processor first, and then the image processor drives it other computer equipment.

FIG. 2B is an architecture of a notebook computer image system without a video graphics array. The low-voltage differential signal driving the display panel is generated by the north bridge chip 202', and the image processor is placed in the display panel 210' and the north bridge chip 202. 'between. Compared with FIG. 2A , the video graphics array is missing, and the TV image data can be output to the south bridge chip 200 (the TV image data enters the video graphics array in FIG. 2A ), and other devices are the same as in FIG. 2A .

The image processor 212 is an important device of the above-mentioned display system. The present invention proposes an image processor, which can receive and play TV image data without starting the computer operating system under the above two display system architectures (including/excluding video graphics array), and switch under the operation of the operating system Watch computer image data and TV images. In addition, the image processor can simplify the design of the display system including or not including the video graphic array device, and the detailed description will be described later.

FIG. 3 illustrates the architecture of the image processor and its connections with other display system devices. With reference to Fig. 3, image processor 36 comprises at least: initialization control unit 300, data conversion unit 302, panel drive unit 304, memory control unit 306, switching control unit 308, image compression unit 310, data output interface 312, data exchange interface 314 , the first selection module 330 , and the second selection module 332 , and the image processor 36 is further connected to the display screen 38 and the memory 33 . Each of the above-mentioned device units will be described in detail later. In addition, a read-only memory 316 may be included to store parameters of different TV systems (NTSC or PAL, etc.) to be compatible with TV signals of different systems.

The display system and device disclosed in the present invention have three working modes: no operating system is activated, operating system is activated for general computer use, and operating system is activated but watching TV. For the convenience of explanation, they are respectively referred to as shutdown mode, computer mode, and TV mode. In shutdown mode, the computer is not turned on to start the operating system, but only power is supplied to the image processor, and the image processor starts other computer devices, such as sound cards and memory. The TV image data is input to the image processor and converted into the signal data of the computer display specification to generate a low voltage differential signal (LVDS) driving signal conforming to the low voltage differential signal electrical specification to drive the display panel. In the computer mode, which is used as a general notebook computer, the image processor bypasses the low voltage differential signal from the video graphics array (or north bridge chip) to the display panel to display images. As for the TV mode, the control of each device of the computer is controlled by the operating system, and the image processor directly transmits the input TV signal to the video graphics array; The signal drives the display panel.

The connection relationship between the image processor in the display system including the video graphics array and the display system without the video graphics array, and the signal processing flow in the above three working modes are respectively described below.

4A to 4C are signal processing flows of a display system including a video graphics array (as in FIG. 2A ) and an image processor in a power-off mode, a computer mode, and a TV mode, respectively. In the shutdown mode, please refer to FIG. 4A , wherein the south bridge chip, the north bridge chip, the memory, the central processing unit, and the video graphics array are in the shutdown state. Since the operating system is not started, the various devices of the notebook computer graphics system cannot function. In addition, if you want to play TV audio and video signals, you still need to start and supply power to some devices (such as sound cards, etc.). When the notebook computer receives a drive command (for example, it can be generated by an on-off button of the notebook computer. Unlike the power switch of the notebook computer system, this button switch does not start the operating system) and enters the shutdown mode from the complete shutdown situation. First, the power supply system (external power supply or built-in battery) supplies power to the image processor 36, and the initialization control unit 300 (and the read-only memory 316) outputs signals to start triggering other computer devices, such as sound cards, memory, or keyboards, etc., It functions like the Basic Input/Output System (BIOS) in a computer system.

In shutdown mode, the TV image data 350 input via the TV image interface (CCIR601/656) is transmitted to the first selection module 330 and output to the data converting unit 302 . The TV image is an interlaced image, and the screen display method is to first output an odd-numbered scan line image (that is, odd field, Odd Field), and then output an even-numbered scan line image (that is, even field, Even Field), interactively output, The image data also interactively records the image information of odd and even fields. In addition, the TV image data adopts the image format of YCrCb (YUV) chrominance difference signal, which is different from the sequential, RGB red, green and blue images of the computer image system. The process of converting an interlaced image to a progressive image is called deinterlacing. To play the TV image on the computer screen, the computer/TV image conversion must be done first. The function of the data conversion unit 302 is to perform de-interlacing and YCrCb to RGB image processing on the TV image data 350, convert the image signal format of the TV image data 350, and obtain the computer image data 352.

Computer images are sequentially scanned in units of frames, and a huge amount of data will be generated when TV image data is converted into computer image data. Since the human eyes feel flickering for 30 sequentially scanned images per second, and such flickering becomes inconspicuous when the scanning frequency is increased to 60Hz, so the computer display frequency is mostly above 60Hz at present. TV images are interlaced scans in field units, and each field contains only half of the data of a frame. Taking the TV signal of the US NTSC system as an example, the display frequency is 60 fields per second, and the odd and even fields are divided into half. Because the resolution (or data volume) of each field only accounts for half of the frame, the original TV signal data volume is equivalent to 30 frames per second. When TV data is converted into computer image data, the amount of image data will increase, and huge data and calculations must first be temporarily stored in memory.

After the data conversion unit 302 performs operations such as de-interlacing on the TV image, the obtained computer image data 352 is temporarily stored in the memory 33 or other memory devices. The present invention is not limited, and its description is as follows. After the data processing of at least one frame is completed, it is output to the display panel 38 for display. Therefore, the computer image data 352 output by the data conversion unit 302 is input into the data exchange interface 314 , and is firstly stored in the memory 33 through the memory control unit 306 to control the data access. When the memory 33 contains at least one frame of image data, the computer image data stored in the memory 33 is controlled by the memory control unit 306 and input to the data exchange interface 314 to be sent to the panel drive unit 304 . In the shutdown mode, the VGA 34 is not in operation, and the device needs to generate low-voltage differential signals for driving the display panel. The panel driving unit 304 is a panel driving circuit for generating a panel driving signal 354 in a low voltage differential signal electrical format to drive the display panel 38 to display TV signals. The second selection module 332 receives the output of the panel driving unit 304 and transmits it to the display panel 38 in the shutdown mode.

In the computer mode, as shown in FIG. 4B , the display system of the embodiment is used as a general notebook computer, the power supply and the operating system operate normally, and there is no need to display the content of the TV image data 350 on the display panel. In this working mode, the image processor 36 acts as a bypass circuit. The computer data is input into the video graphics array 34 for operation, and the generated low voltage differential signal 358 is directly input into the second selection module 332 . At this time, the second selection module 332 receives the low voltage differential signal 358 output by the video graphic array 34 as an effective input, and directly outputs it to the display panel 38 . Therefore, in the computer mode, the image processor 36 only needs to operate the second selection module 332 to bypass the low voltage differential signal 358 and send it to the display panel 38 .

Similarly, in the TV mode, referring to FIG. 4C , each device of the notebook computer is controlled by the operating system. The video graphics array 34 operates normally under the control of the operating system, and generates a low voltage differential signal to drive the display panel. After the TV image data 350 is input to the first selection module 330, it is not input to the data conversion unit 302, but is output to the video graphics array 34 for processing such as de-interlacing and YcrCb/RGB conversion, and the video graphics array 34 generates a low voltage differential Signal 358. Afterwards, the low voltage differential signal 358 is again input into the image processor 36 and directly transmitted to the second selection module 332 . At this time, the second selection module 332 selects the low voltage differential signal 358 as an effective input, and directly outputs it to the display panel 38 . In other words, in the TV mode, the image processor 36 relays the TV image data 350 to the video graphics array 34 for TV/computer data conversion, and then sends it to the display panel 38 through the second selection module 332 . Note that in the TV mode, the image processor 36 only needs the first selection module 330 and the second selection module 332 to operate.

According to the above, in the shutdown mode, the TV image data 350 is output to the data conversion unit 302 through the first selection module 330 , and is output to the video graphics array 34 in the TV mode. The second selection module 332 receives the output of the panel driving unit 304 in the power-off mode and outputs it to the display panel 38 ; in the TV and computer mode, it selects and receives the low voltage differential signal 358 output by the video graphics array 34 . Therefore, a device is needed to control the input and output ends of the above two selection modules to switch the image processor between the three operation modes. The function of the switching control unit 308 is to control the first selection module 330 and the second selection module 332 to switch their effective output terminals and input terminals respectively when receiving a mode switching command, and to disable (disable) the first selection module 332 in the TV mode. A module is selected not to perform arithmetic processing on the television image data 350 . In addition, when the notebook computer enters the shutdown mode from a complete shutdown, the switch control unit 308 triggers the initialization control unit 300 to drive a part of the computer devices. The above-mentioned mode switching command may be generated by adding buttons on the keyboard or the display panel.

As shown in FIG. 4A to FIG. 4C , in a display system including a video graphics array, the image compression unit 310 and the data output interface 312 in the image processor 36 have no function. Therefore, the image processor 36 can omit the image compression unit 310 and the data output interface 312 under the architecture of the display system including the video graphics array, as shown in FIG. 5 , and the first selection module is electrically connected to the video graphics array 54 .

FIGS. 6A to 6C are signal processing flows of a display system without a video graphics array (as in FIG. 2B ) and an image processor in a power-off mode, a computer mode, and a TV mode. In shutdown mode, referring to FIG. 6A , the initialization control unit 300 activates part of the computer devices as in the above-mentioned system including the video graphics array. The input TV image data 350 is output to the data conversion unit 302 by the first selection module 330, and the TV image data 350 is decompressed at the data conversion unit 302, and the operation of YCrCb/RGB conversion generates the computer image data 352, and through the data exchange interface 314 and the memory control unit 306 and temporarily stored in the memory 33. Then the memory control unit 306 reads the computer image data 352 temporarily stored in the memory 33, and inputs the panel drive unit 304 through the data exchange interface 314 to generate a panel drive signal 354 of a low-voltage differential signal, which is then output to the display by the second selection module 332. panel 38 to display television signals.

Similarly, referring to FIG. 6B , the image processor 36 is used as a bypass circuit in the computer mode. After the central processing unit operates on the computer image data, the north bridge chip 31 generates a low voltage differential signal 358 to drive the display panel 38 . The low voltage differential signal 358 is directly input to the second selection module 332 , and the second selection module 352 selects the low voltage differential signal 358 as an effective input and outputs it to the display panel 38 .

In the TV mode, referring to FIG. 6C , since the notebook computer does not contain a video graphics array device, the TV/computer data conversion must be processed in the data conversion unit 302 at this time. The TV image data 350 is input into the first selection module 330 , selected and output to the data conversion unit 302 for TV/computer data conversion. The computer image data 352 output by the data conversion unit 302 is input into the data exchange interface 314 , and firstly stored in the memory 33 temporarily through the memory control unit 306 to control the data access. Because the display panel 38 is driven by the low-voltage differential signal 358 generated by the north bridge chip 31, the converted computer image data is not transmitted to the panel driving unit 304 to generate the panel driving signal as shown in the shutdown mode (refer to FIG. 4A ), but requires The low-voltage differential signal is output to drive the display panel 38 after being transmitted back to the north bridge chip 31 for calculation and processing. From the previous description, it is known that the conversion of TV image data into computer image data will increase the huge amount of data. Therefore, the computer image signal 352 needs to be compressed and output through a data output interface, and then read by the south bridge chip 30 and input to the central processing unit. Therefore, the computer image data 352 is input to the image compression unit 310 through the data exchange interface 314 for data compression, such as using discrete cosine transform (Discrete Cosine Transform, DCT) technology, to obtain a compressed image signal 356 . Afterwards, the output is sent back to the south bridge chip 30 through the data output interface 312 . In this embodiment, the data output interface 312 is a Universal Serial Bus (USB) interface, and may be replaced by other I/O interfaces, which is not limited in the present invention.

In Fig. 6C, after the south bridge chip 30 receives the compressed image signal 356 output by the data output interface 312, it is input to the central processing unit for calculation and processing via the north bridge chip 31, and then the north bridge chip 31 generates a low-voltage differential signal 358 and is input to the image processing again. to the second selection module 332. At this time, the second selection module 352 selects to receive the low voltage differential signal 358 output by the north bridge chip 31 as its effective input, and directly outputs to the display panel 38 to display the TV image.

Likewise, the switching of the above three working modes is controlled by the switching control unit 308 to adjust the valid output terminals and input terminals of the first selection module 330 and the second selection module 332 . Like a system including a video graphics array, the switching control unit 308 also triggers and controls the initialization control unit 300 to drive some computer devices.

6A and 6C, when the system does not contain a video graphics array, the first selection module 330 outputs the input TV image data 350 to the data conversion unit 302 in the power-off mode and the TV mode, so the image processing When the device 36 is applied to a display system architecture without a video graphics array, the first selection module 330 can be further omitted, and the input TV image data 350 can be directly electrically connected to the data converting unit 302 . Therefore, the new image processor architecture is shown in Figure 7, the second selection module is replaced by the selection module 732 (the function is still the same), and the data output interface is connected to the south bridge chip 30, and the other units remain unchanged.

It must be emphasized here that the computer display system and image processor disclosed above are not only applicable to notebook computers, but can effectively solve the problem in the prior art that notebook computers cannot play TV images without starting the operating system. Difficult, in fact, it can also be used in desktop computer systems, that is, the present invention mainly provides a new display system architecture and image processor, and is not limited to notebook computers.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the application for patent rights of the present invention; meanwhile, the above descriptions should be clear and implementable for those who are familiar with the technical field, so other disclosures that do not depart from the present invention Equivalent changes or modifications completed under the spirit of , shall be included in the scope of the following patent applications.

Claims (32)

1. An image processor, which is applied to a computer image system so that the display panel can play TV images without starting the operating system, and the image processor includes: An initialization control unit is a part of the device responsible for driving at least one computer without starting the operating system; A data conversion unit, which performs a data conversion process on an input TV image data to form a computer image data; A panel drive unit, used to generate a panel drive signal conforming to the electrical specification of the low-voltage differential signal; A memory control unit, to control an external memory for data access; An image compression unit, which can perform a data compression operation on the computer image data to form a compressed image signal; A data exchange interface, the data conversion unit, the memory control unit, the image compression unit, and the panel drive unit are electrically interconnected through the data exchange interface for data transfer and exchange; A first selection module, including an input terminal, a first output terminal, and a second output terminal, wherein the first selection module receives the TV image data from the input terminal, and selects an effective output terminal to output the TV image data; A second selection module comprising: a first input terminal electrically connected to the panel drive unit; A second input terminal is electrically connected to an external image processing device; An output terminal is electrically connected to a display panel, wherein the second selection module selects an effective input terminal to output to the display panel; and A switching control unit receives a mode switching command, and selects effective inputs and outputs of the first selection module and the second selection module according to the mode switching command. 2. The image processor as claimed in claim 1, wherein some devices of the computer at least include a computer memory and a sound card device. 3. The image processor according to claim 1, further comprising a read-only memory electrically connected to the initialization control unit, the initialization control unit reads the parameters of different TV systems stored in the read-only memory and drives and controls the computer part of the device. 4. The image processor as claimed in claim 1, wherein the first output terminal of the first selection module is connected to the data conversion unit, and when the computer graphics system contains a video graphics array, the first selection module The second output terminal is connected to an image graphics array, and when the computer graphics system does not contain a video graphics array, the second output terminal of the first selection module is open. 5. The image processor according to claim 4, wherein, in the power-off mode, the switching control unit selects the first output terminal of the first selection module as an effective output, and the first output terminal of the second selection module The input terminal is a valid input. 6. The image processor as claimed in claim 4, wherein in the computer mode, the switching control unit selects the second input terminal of the second selection module as an effective input and disables the first selection module. 7. The image processor as claimed in claim 4, when the computer graphics system includes a video graphics array and is in the TV mode, the switch control unit selects the second output terminal of the first selection module as an effective output, and the second The second input end of the second selection module is an effective input. 8. The image processor according to claim 4, when the computer graphics system does not contain a video graphics array and is in the TV mode, the switching control unit selects the first output terminal of the first selection module as an effective output, and the The second input terminal of the second selection module is an effective input. 9. The image processor as claimed in claim 1, wherein the data conversion process comprises one of the following operations: De-interlacing processing, YCrCb chrominance difference signal/RGB data format conversion and the combination of the above two. 10. The image processor according to claim 1, when the computer graphics system includes a video graphics array, the external image processing device is the video graphics array, and when the computer graphics system does not contain a video graphics array, the external image processing device The device is a north bridge chip. 11. The image processor according to claim 1, when the computer image system does not contain a video graphics array and is in a TV mode, the image compression unit forms the compressed image data and outputs it to the south bridge chip through a data output interface. 12. An image processor, applied to a computer system including a video graphics array so that the display panel can play TV images without starting the operating system, comprising: An initialization control unit is a part of the device responsible for driving at least one computer without starting the operating system; A data conversion unit, which performs a data conversion process on an input TV image data to form a computer image data; A panel drive unit, used to generate a panel drive signal conforming to the electrical specification of the low-voltage differential signal; A memory control unit, to control an external memory for data access; A data exchange interface, the data conversion unit, the memory control unit, and the panel drive unit are electrically interconnected through the data exchange interface for data transfer and exchange; A first choice module, comprising: An input terminal receives the input TV image data; A first output terminal is electrically connected to the data conversion unit; A second output terminal is electrically connected to the video graphics array of the computer, wherein the first selection module selects an effective output terminal to output the TV image data; A second selection module comprising: a first input terminal electrically connected to the panel drive unit; A second input terminal is electrically connected to the video graphics array of the computer; An output terminal is electrically connected to a display panel, wherein the second selection module selects an effective input terminal to output to the display panel; and A switching control unit receives a mode switching command, and selects effective inputs and outputs of the first selection module and the second selection module according to the mode switching command. 13. The image processor as claimed in claim 12, wherein some devices of the computer at least include a computer memory and a sound card device. 14. The image processor as claimed in claim 12, further comprising a read-only memory electrically connected to the initialization control unit, the initialization control unit reads the parameters of different TV systems stored in the read-only memory and drives and controls the computer part of the device. 15. The image processor according to claim 12, wherein, in the power-off mode, the switching control unit selects the first output terminal of the first selection module as an effective output, and the second selection module of the second selection module One input terminal is valid input. 16. The image processor as claimed in claim 12, wherein in the computer mode, the switching control unit selects the second input end of the second selection module as an effective input. 17. The image processor according to claim 12, wherein, in the TV mode, the switching control unit selects the second output terminal of the first selection module as an effective output, and the second output terminal of the second selection module The two inputs are valid inputs. 18. The image processor as claimed in claim 12, wherein the data conversion process comprises one of the following operations: De-interlacing processing, YCrCb chrominance difference signal/RGB data format conversion and the combination of the above two. 19. An image processor, applied to a computer system without a video graphics array, so that the display panel can play TV images without starting the operating system, the image processor includes: An initialization control unit is a part of the device responsible for driving at least one computer without starting the operating system; A data conversion unit, which performs a data conversion process on an input TV image data to form a computer image data; A panel drive unit, used to generate a panel drive signal conforming to the electrical specification of the low-voltage differential signal; An image compression unit, which can perform a data compression operation on the computer image data to form a compressed image signal; A memory control unit, to control an external memory for data access; A data exchange interface, the data conversion unit, the memory control unit, the panel drive unit, and the image compression unit are electrically connected through the data exchange interface for data transfer and exchange; A selection module, including a first input terminal electrically connected to the panel drive unit, a second input terminal electrically connected to a north bridge chip, and an output terminal electrically connected to a display panel, the selection module selects an effective input output to the display panel to display images; and A switching control unit receives a mode switching command, and selects effective inputs and outputs of the first selection module and the second selection module according to the mode switching command. 20. The image processor as claimed in claim 19, wherein some devices of the computer at least include a computer memory and a sound card device. 21. The image processor as claimed in claim 19, further comprising a read-only memory electrically connected to the initialization control unit, and the initialization control unit reads the parameters of different TV systems stored in the read-only memory and drives and controls the computer part of the device. 22. The image processor as claimed in claim 19, wherein, in the shutdown mode, the switch control unit selects the first input terminal of the selection module as an effective input. 23. The image processor as claimed in claim 19, wherein, in the computer mode and the TV mode, the switch control unit selects the second input terminal of the selection module as an effective input. 24. The image processor as claimed in claim 19, wherein the data conversion process comprises one of the following operations: De-interlacing processing, YCrCb chrominance difference signal/RGB data format conversion and the combination of the above two. 25. The image processor as claimed in claim 19, the compressed image data is further output to a south bridge chip through a data output interface. 26. A computer graphics system, which can make the computer play TV images without starting the operating system, and the computer graphics system includes: A core unit group is used for computer image processing operation, which includes a central processing unit, a memory unit, a south bridge chip, and a north bridge chip; a display panel for displaying video images; and An image processor, which can receive a TV image data for TV/computer data conversion into a computer image data and form a first panel drive signal, or receive a second panel in the electrical format of the low-voltage differential signal generated by the core unit group The driving signal is output to the display panel to display video images. 27. The computer graphics system of claim 26, wherein the core unit set further comprises a video graphics array device. 28. The computer graphics system as claimed in claim 26, wherein the graphics processor comprises an initialization control unit, so that the computer can drive at least one part of the computer in the shutdown mode. 29. The computer graphics system as claimed in claim 26, wherein some devices of the computer at least include a sound card and the memory unit. 30. The computer graphics system as claimed in claim 26, wherein in the power-off mode, the graphics processor receives the TV image data for TV/computer data conversion to form the first panel driving signal, and outputs it to the display panel. 31. The computer graphics system of claim 26, wherein in computer mode, the graphics processor inputs the second panel driving signal to bypass the display panel. 32. The computer graphics system as claimed in claim 26, wherein, in the TV mode, the graphics processor sends the TV graphics data or the computer graphics data back to the core unit group, and the core unit group forms the second The panel driving signal is input again to the image processor and bypassed to the display panel to drive and display the screen panel.

Images