CN108305593B - Data compression system for liquid crystal display and power saving method thereof - Google Patents

Abstract

The present invention discloses a data compression system for a liquid crystal display and a power saving method thereof. The data compression system comprises a main device unit and a driving circuit. The main device unit is used to output an image data in a first data format or a second data format according to an operation mode of the liquid crystal display. The driving circuit comprises a bypass path, a compression unit, a storage unit and a decompression unit. The bypass path is used to transmit the image data according to the operation mode. The compression unit is used to perform a compression procedure on the image data according to the operation mode to generate compressed data. The decompression unit is used to perform a decompression procedure on the compressed data according to the operation mode to restore the image data.

Description

Data compression system for liquid crystal display and power saving method thereof

The filing date of the original application is September 5, 2013, the application number of the original application is 201310400672.7, and the invention name of the original application is "data compression system for liquid crystal display and power saving method thereof".

technical field

The present invention relates to a data compression system for a liquid crystal display, in particular to a data compression system capable of selecting a data transmission path according to an operation mode and a related power saving method thereof.

Background technique

Liquid Crystal Display (LCD) has the advantages of thin and light appearance, power saving and low radiation, so it has been widely used in computer screens, mobile phones, personal digital assistants (PDAs), flat-screen TVs, and other communication/entertainment equipment and other electronic products. The working principle of the liquid crystal display is to change the arrangement state of the liquid crystal molecules in the liquid crystal layer by changing the voltage difference between the two ends of the liquid crystal layer, so as to change the light transmittance of the liquid crystal layer, and then cooperate with the light source provided by the backlight module to display images.

The liquid crystal display includes a driver chip. After the data is transmitted from the host device to the driver chip, the data will be compressed by a compression circuit and stored in a compressed memory. The driver chip then uses the decompression circuit to transmit the data to the display data block. When the driver chip operates in some special modes, full color gamut information is not required. Therefore, the compression operation of the information data of the full color gamut by the compression circuit will cause unnecessary power consumption.

SUMMARY OF THE INVENTION

Therefore, the main purpose of the present invention is to provide a data compression system for a liquid crystal display, so as to save the power consumption of the liquid crystal display.

The present invention provides a data compression system for a liquid crystal display. The data compression system includes a main device unit and a driving circuit. The main device unit is used for outputting an image data in a first data format or a second data format according to an operation mode of the liquid crystal display. The driving circuit includes a bypass path, a compression unit, a storage unit, a decompression unit and a display unit. The bypass path is used to transmit the image data according to the operation mode. The compression unit, coupled to the main device unit, is used for receiving the image data according to the operation mode and executing a compression procedure on the image data to generate compressed data. The storage unit, coupled to the compression unit, is used for storing the compressed data and the image data. The decompression unit, coupled to the storage unit, is used for receiving the compressed data according to the operation mode and executing a decompression procedure on the compressed data to restore the image data. The display unit is used for displaying the image data.

The present invention further provides a data compression system for a liquid crystal display. The data compression system includes a main device unit and a driving circuit. The main device unit is used for outputting image data, wherein the image data has a first data format. The driving circuit includes a bypass path, a compression unit, a storage unit, a format conversion unit, a decompression unit and a display unit. The bypass path is used for transmitting the image data according to an operation mode. The compression unit, coupled to the main device unit, is used for receiving the image data according to the operation mode and executing a compression procedure on the image data to generate compressed data. The storage unit, coupled to the compression unit, is used for storing the compressed data and the image data. The format conversion unit is coupled to the storage unit for executing a format conversion program to convert the image data into the first data format or a second data format. The decompression unit, coupled to the storage unit, is used for receiving the compressed data according to the operation mode and executing a decompression procedure on the compressed data to restore the image data. The display unit is used for displaying the image data.

The present invention further provides a power saving method for a data compression system. The power saving method includes outputting image data in a first data format or a second data format according to an operation mode; judging whether to perform a compression procedure on the image data according to the operation mode; and displaying the image data.

The present invention further provides a power saving method for a data compression system. The power saving method includes outputting an image data, wherein the image data has a first data format; according to an operation mode, judging whether to execute a compression program on the image data; according to the operation mode, executing a format conversion program to convert The image data is converted into the first data format or a second data format; and the image data is displayed.

Description of drawings

FIG. 1 is a schematic diagram of a data compression system 10 according to an embodiment of the present invention.

2(a) and 2(b) are schematic diagrams of data formats according to an embodiment of the present invention.

FIG. 2( c ) is a schematic diagram of compressed data according to Embodiment 1 of the present invention.

FIG. 3 and FIG. 4 are timing diagrams of image data of different output terminals according to an embodiment of the present invention.

FIG. 5 is a schematic diagram of a data compression system according to another embodiment of the present invention.

FIG. 6 and FIG. 7 are timing diagrams of image data of different output terminals according to an embodiment of the present invention.

FIG. 8 is a schematic diagram of a flow of Embodiment 1 of the present invention.

FIG. 9 is a schematic diagram of a flow of Embodiment 1 of the present invention.

Among them, the reference numerals are described as follows:

10. 50 Data Compression System

100, 500 main unit

120, 520 drive circuit

121, 521 image data unit

122, 522 compression units

123, 126, 523, 527 switching unit

124, 524 storage units

125, 526 decompression unit

127, 528 display unit

525 format conversion unit

80, 90 process

800, 802, 804, 806, 808, 810, 812, 814, steps

816, 900, 902, 904, 906, 908, 910, 912,

914, 916

L1, L3 bypass path

L2, L4 complete data path

Cmprs_D Compressed data

frmt1, frmt2 data format

Img_D image data

Detailed ways

Please refer to FIG. 1 , which is a schematic diagram of a data compression system 10 according to an embodiment of the present invention. The data compression system 10 may be used in a liquid crystal display. The data compression system 10 includes a main device unit 100 and a driving circuit 120 . The main device unit 100 is used for outputting an image data Img_D in a data format frmt1 or a data format frmt2 according to an operation mode of the liquid crystal display. The driving circuit 120 can preferably be realized by a driving chip (Drive IC). The driving circuit 120 includes an image data unit 121 , a compression unit 122 , switching units 123 and 126 , a storage unit 124 , a decompression unit 125 , a display unit 127 , a bypass path L1 and a complete data path L2 . The switching units 123 and 126 are used to switch the bypass path L1 or the complete data path L2. The compression unit 122 is used for receiving the image data Img_D according to the operation mode and performing a compression procedure on the image data Img_D to generate a compressed data Cmprs_D. The storage unit 124, coupled to the compression unit 122 and the main device unit 100, is used for storing the compressed data Cmprs_D and the image data Img_D. Preferably, the storage unit 124 can be a static random access memory (Static Random Access Memory, SRAM). The decompression unit 125 is coupled to the storage unit 124 for receiving the compressed data Cmprs_D according to the operation mode and performing a decompression procedure on the compressed data Cmprs_D to restore the image data Img_D. The display unit 127 is used to display the image data Img_D.

When the operation mode is the special mode, the main device unit 100 outputs the image data Img_D in the data format frmt1, and transmits the image data Img_D in the data format frmt1 through the bypass path L1. When the operation mode is the normal mode, the main device unit 100 outputs the image data Img_D in the data format frmt2, and transmits the image data Img_D in the data format frmt2 through the complete data path L2. Preferably, the image data of the data format frmt1 has fewer bits than the image data of the data format frmt2. In addition, the special modes include a reduced color gamut picture mode, a partial picture display mode and an upscaled picture mode. In the special mode, the LCD does not need the information of the full color gamut. For example: in the reduced color gamut picture mode, the three primary colors of RGB can be reduced from 24 bits to 3 bits; in the partial picture display mode, when the LCD display changes from When switching from 480x800 full-screen display to 100x100 partial screen display, other undisplayed images can be replaced with a single message color; in upscaled screen mode, when the LCD monitor switches from 480x800 full-screen display to 240x400 upscaled screen, only half the data is needed The same 480x800 full screen can be displayed. Therefore, in the special mode, the main device unit 100 can output the image data Img_D in the data format frmt1 with a smaller amount of data, reducing the amount of data that needs to be stored in the storage unit 124, and transmitted to the display unit 127 through the bypass path L1 without the need for Execute the compression program as well as the decompression program. In this way, unnecessary power consumption can be avoided.

Please refer to Figure 2(a), Figure 2(b) and Figure 2(c). 2(a) is a schematic diagram of a data format frmt2 according to an embodiment of the present invention; FIG. 2(b) is a schematic diagram of a data format frmt1 according to an embodiment of the present invention; and FIG. 2(c) is a schematic diagram of compressed data Cmprs_D according to an embodiment of the present invention. In FIG. 2( a ), each pixel includes three sub-pixels R, G, and B, and each sub-pixel can be represented by 8 bits. So each pixel is 24 bits. In Fig. 2(b), each pixel only uses 3 bits to represent three sub-pixels of R, G, and B, respectively. In comparison, the data format frmt1 has a smaller data volume than the data format frmt2.

The detailed operation of the data compression system 10 is described below. When the operation mode is the normal mode, the main device unit 100 outputs the image data Img_D in the data format frmt2. The image data Img_D in the data format frmt2 first passes through the image data unit 121 and is sent to the compression unit 122 through the complete data path L2. The compression unit 122 performs a compression process on the image data Img_D in the data format frmt2 to generate compressed data Cmprs_D. The switching unit 123 selects the compressed data Cmprs_D from the complete data path L2 and stores the compressed data Cmprs_D in the storage unit 124 . Next, the decompression unit 125 receives the compressed data Cmprs_D, and performs a decompression procedure on the compressed data Cmprs_D to restore the image data Img_D in the data format frmt2. The switching unit 126 transmits the image data Img_D in the data format frmt2 to the display unit 127 through the complete data path L2. Finally, the display unit 127 displays the image data Img_D of the data format frmt2. When the operation mode is switched from the normal mode to the special mode, the main device unit 100 retransmits a transmitted image data Prv_D1 in the data format frmt1 in the next frame frame after switching. The transmitted image data Prv_D1 is the image data transmitted when the operation mode is the normal mode, and has a data format frmt2. When the main device unit 100 retransmits the transmitted image data Prv_D1 in the data format frmt1, the display unit 127 displays a completely black picture to avoid the occurrence of abnormal picture. When the operation mode is the special mode, the main device unit 100 outputs the image data Img_D in the data format frmt1. The image data Img_D in the data format frmt1 first passes through the image data unit 121 , bypasses the compression unit 122 through the bypass path L1 , and is directly transmitted to the switching unit 123 . The switching unit 123 selects the image data Img_D of the data format frmt1 from the bypass path L1 , and stores the image data Img_D of the data format frmt1 in the storage unit 124 . Next, the switching unit 126 transmits the image data Img_D in the data format frmt1 to the display unit 127 through the bypass path L1. Finally, the display unit 127 displays the image data Img_D in the data format frmt1. When the operation mode is switched from the special mode to the normal mode, the main device unit 100 retransmits a transmitted image data Prv_D2 in the data format frmt2 in the next frame frame after switching. The transmitted image data Prv_D2 is the image data transmitted when the operation mode is the special mode, and has the data format frmt1. When the main device unit 100 retransmits the transmitted image data Prv_D2 in the data format frmt2, the display unit 127 displays a completely black picture to avoid the occurrence of abnormal picture. When the operation mode returns to the normal mode, the operation mode can be referred to the above and will not be repeated here. Therefore, when the operation mode is the special mode, the data compression system 10 transmits the image data Img_D in the data format frmt1 to the display unit 127 through the bypass path L1 and skips the compression and decompression procedures to save power consumption.

In addition, please refer to FIG. 3 and FIG. 4 . FIG. 3 is a timing diagram of image data of different output terminals when the operation mode is switched from the general mode to the special mode according to the embodiment of the present invention; FIG. 4 is an embodiment of the present invention when the operation mode is changed from the special mode to When the mode is switched to normal mode, the image data timing diagram of different output terminals. In FIGS. 3 and 4 , the horizontal axis is a time axis. Wherein, each time interval on the horizontal axis is the time of one frame. The detailed description of FIG. 3 and FIG. 4 refers to the above, and will not be repeated here.

Please refer to FIG. 5 , which is a schematic diagram of a data compression system 50 according to another embodiment of the present invention. The data compression system 50 may be used in a liquid crystal display. The basic architecture of the data compression system 50 is similar to that of the data compression system 10, so data at the same outputs are denoted by the same reference numerals. The data compression system 50 includes a main device unit 500 and a driving circuit 520 . The main device unit 500 is used for outputting an image data Img_D. The image data unit has a data format frmt2. The driving circuit 520 can preferably be realized by a driving chip (Drive IC). The driving circuit 520 includes an image data unit 521, a compression unit 522, switching units 523 and 527, a storage unit 524, a format conversion unit 525, a decompression unit 526, a display unit 528, a bypass path L3, and a complete Data path L4. The switching units 523 and 527 are used to switch the bypass path L3 or the complete data path L4. The compression unit 522 is used for receiving the image data Img_D according to the operation mode and performing a compression procedure on the image data Img_D to generate the compressed data Cmprs_D. The storage unit 524, coupled to the compression unit 522 and the main device unit 500, is used for storing the compressed data Cmprs_D and the image data Img_D. Preferably, the storage unit 524 can be a static random access memory (Static Random Access Memory, SRAM). The format conversion unit 525, coupled to the storage unit 524, is used for executing a format conversion program to convert the image data Img_D into the data format frmt1 or the data format frmt2. The decompression unit 526 is coupled to the storage unit 524 for receiving the compressed data Cmprs_D according to the operation mode and performing a decompression procedure on the compressed data Cmprs_D to restore the image data Img_D. The display unit 528 is used to display the image data Img_D.

When the operation mode is the special mode, the image data Img_D of the data format frmt2 is transmitted to the storage unit 524 through the bypass path. The format conversion unit 525 reads the image data Img_D of the data format frmt2 of the storage unit 524, converts the image data Img_D of the data format frmt2 into the data format frmt1 with a smaller data amount, and stores it back into the storage unit 524, and skips the execution. Compressor and decompressor. In this way, unnecessary power consumption can be avoided.

The detailed operation of the data compression system 50 is described below. When the operation mode is the normal mode, the main device unit 500 outputs the image data Img_D in the data format frmt2. The image data Img_D in the data format frmt2 first passes through the image data unit 521 and is sent to the compression unit 522 through the complete data path L4. The compression unit 522 performs a compression process on the image data Img_D in the data format frmt2 to generate compressed data Cmprs_D. The switching unit 523 selects the compressed data Cmprs_D from the complete data path L4 and stores the compressed data Cmprs_D in the storage unit 524 . Next, the decompression unit 526 receives the compressed data Cmprs_D, and performs a decompression procedure on the compressed data Cmprs_D to restore the image data Img_D in the data format frmt2. The switching unit 527 transmits the image data Img_D in the data format frmt2 to the display unit 528 through the complete data path L4. Finally, the display unit 528 displays the image data Img_D in the data format frmt2. When the operation mode is switched from the normal mode to the special mode, the main device unit 500 outputs the image data Img_D in the data format frmt2 to the image data unit 521, and transmits it to the storage unit 524 through the bypass path L3. The format conversion unit 525 reads the image data Img_D in the data format frmt2 from the storage unit 524 in the next frame frame after the switching, converts the image data Img_D from the data format frmt2 to the data format frmt1, and stores it back to the storage unit 524 . When the format conversion unit 525 executes the format conversion program, the display unit 528 displays a completely black screen to avoid the occurrence of abnormal screen conditions. When the format conversion process is completed, the display unit 528 displays the image data Img_D of the data format frmt1. When the operation mode is switched from the special mode to the normal mode, the format conversion unit 525 reads the image data Img_D of the data format frmt1 from the storage unit 524 in the next frame after the switching, and converts the image data Img_D to the data format frmt1 The data is in the data format frmt2 and then stored back to the storage unit 524 . Similarly, when the format conversion unit 525 executes the format conversion program, the display unit 528 displays a completely black screen to avoid the occurrence of abnormal screen conditions. When the format conversion process is completed, the display unit 528 displays the image data Img_D of the data format frmt2. When the operation mode returns to the normal mode, the operation mode can be referred to the above and will not be repeated here. Therefore, when the operation mode is the special mode, the data compression system 50 transmits the image data Img_D to the display unit 528 through the bypass path L3, and skips executing the compression and decompression procedures to save power consumption. It should be noted that, compared with the data compression system 10 , the main device unit 500 in the data compression system 50 does not need to perform retransmission, and the data format conversion is performed by the format conversion unit 525 .

In addition, please refer to FIG. 6 and FIG. 7. FIG. 6 is a timing chart of image data of different output terminals when the operation mode is switched from the general mode to the special mode according to the embodiment of the present invention; FIG. 7 is the embodiment of the present invention when the operation mode is changed from the special mode When the mode is switched to normal mode, the image data timing diagram of different output terminals. In FIGS. 6 and 7 , the horizontal axis is a time axis. Wherein, each time interval on the horizontal axis is the time of one frame. The detailed description of FIG. 6 and FIG. 7 refers to the above, and will not be repeated here.

The operation of the data compression system 10 can be summarized as a process 80 , as shown in FIG. 8 . The process 80 can be used in the data compression system 10 to save power, and includes the following steps:

Step 800: Start.

Step 802: Determine the operation mode, if the operation mode is the special mode, go to step 804; if the operation mode is the general mode, go to step 806.

Step 804 : Output the image data Img_D in the data format frmt1 , and execute Step 808 .

Step 806 : Output the image data Img_D in the data format frmt2, and perform step 810 .

Step 808 : The image data Img_D in the data format frmt1 is transmitted through the bypass path L1 , and step 816 is executed.

Step 810: Transmit the image data Img_D in the data format frmt2 through the complete data path L2.

Step 812: Execute a compression program.

Step 814: Execute the decompression program.

Step 816: Display the image data Img_D.

According to the process 80, when the operation mode is the special mode, the data compression system 10 transmits the image data Img_D in the data format frmt1 through the bypass path L1, omitting the compression and decompression procedures to save power consumption. When the operation mode is the normal mode, the data compression system 10 performs compression and decompression procedures on the image data in the data format frmt2 through the complete data path L2. For the detailed description of the process 80, reference may be made to the foregoing description, which will not be repeated here.

The operation of the data compression system 50 can be summarized as a process 90 , as shown in FIG. 9 . The process 90 can be used in the data compression system 50 to save power, and includes the following steps:

Step 900: Start.

Step 902: Output image data Img_D, wherein the image data Img_D has a data format frmt2.

Step 904 : Determine the operation mode, if the operation mode is the special mode, go to step 906 ; if the operation mode is the general mode, go to step 908 .

Step 906 : Transmit the image data Img_D in the data format frmt2 through the bypass path L3 , and perform step 914 .

Step 908: Transmit the image data Img_D in the data format frmt2 through the complete data path L4.

Step 910: Execute a compression program.

Step 912 : Execute the decompression program, and execute step 916 .

Step 914: Execute the format conversion program.

Step 916: Display the image data Img_D.

According to the process 90, when the operation mode is the special mode, the data compression system 50 transmits the image data Img_D in the data format frmt2 through the bypass path L3, skips the compression and decompression procedures, and executes the format conversion procedure to convert the image data Img_D into data The format frmt2 is converted to the data format frmt1. When the operation mode is the normal mode, the data compression system 50 compresses and decompresses the image data of the data format frmt2 through the complete data path L4. The detailed description of the process 90 can be referred to the above, and will not be repeated here.

To sum up, the embodiment of the present invention can determine the transmission path (bypass path or complete data path) of the image data according to the operation mode. When the operation mode is a special mode that does not require full-color information (a reduced color gamut image mode, a partial image display mode, and an up-converted image mode), the embodiment of the present invention can transmit image data in a data format with a smaller amount of data or Convert the image data into a data format with a smaller amount of data, and transmit the image data through a bypass path, so as to skip the compression and decompression procedures to save power.

The above descriptions are only preferred embodiments of the present invention, and all equivalent changes and modifications made according to the claims of the present invention shall fall within the scope of the present invention.

Claims (32)

1. A drive circuit for a data compression system of a liquid crystal display, the data compression system comprising a main device unit for outputting a first data format or a second data format according to an operation mode of the liquid crystal display Image data, the drive circuit includes: a bypass path for transmitting the image data according to the operation mode; a compression unit, coupled to the main device unit, for receiving the image data according to the operation mode and performing a compression procedure on the image data to generate a compressed data; a storage unit, coupled to the compression unit, for storing the compressed data and the image data; a decompression unit, coupled to the storage unit, for receiving the compressed data according to the operation mode and performing a decompression procedure on the compressed data to restore the image data; and a display unit for displaying the image data; wherein, the image data in the first data format has fewer bits than the image data in the second data format; Wherein, when the image data has the first data format, the image data is transmitted through the bypass path, and when the image data has the second data format, the image data is transmitted by the The compression unit and the decompression unit process. 2 . The driving circuit of claim 1 , wherein the main device unit outputs the image data in the first data format when the operation mode is a special mode, and outputs the image data in the first data format when the operation mode is a special mode. 3 . In the normal mode, the image data is output in the second data format, and the special mode is a mode that does not require information of the full color gamut. 3 . The driving circuit of claim 2 , wherein the special mode includes a reduced color gamut picture mode, a partial picture display mode and an upscaled picture mode. 4 . 4. The driving circuit of claim 2, wherein the master unit is further configured to retransmit in the first data format after the operation mode is switched from the normal mode to the special mode A transmitted image data. 5 . The driving circuit of claim 4 , wherein the display unit is further configured to display a full black when the master device unit retransmits the transmitted image data in the first data format. 6 . screen. 6 . The driving circuit of claim 2 , wherein the master device unit is further configured to retransmit in the second data format after the operation mode is switched from the special mode to the normal mode. 7 . A transmitted image data. 7 . The driving circuit of claim 6 , wherein the display unit is further configured to display a full black when the master device unit retransmits the transmitted image data in the second data format. 8 . screen. 8 . The driving circuit of claim 2 , wherein the bypass path transmits the image data in the first data format when the operation mode is the special mode. 9 . 9 . The driving circuit of claim 2 , wherein the compression unit receives the image data in the second data format when the operation mode is the normal mode, and compresses the second data. 10 . The image data in the format performs the compression process to generate the compressed data. 10. The driving circuit of claim 2, wherein the decompression unit receives the compressed data when the operation mode is the normal mode, and executes the decompression procedure on the compressed data, to restore the image data in the second data format. 11. A power saving method for a driving circuit, the driving circuit being used in a data compression system of a liquid crystal display, the power saving method comprising: An image data is received from a host device unit in a first data format or a second data format according to an operation mode, wherein the image data in the first data format is larger than the image in the second data format the data has fewer digits; determining whether to perform a compression process on the image data according to the operation mode; and output to display the image data; Wherein, when the image data has the first data format, the image data is not subjected to the compression process, and when the image data has the second data format, the image data is subjected to the compression program. 12 . The power saving method of claim 11 , wherein receiving the image data from the host device unit in the first data format or the second data format according to the operation mode comprises: The image data is received in the first data format when the operation mode is a special mode, and the image data is received in the second data format when the operation mode is a general mode, wherein the special The mode is a mode that does not require information of the full color gamut. 13 . The power saving method of claim 12 , wherein the special mode includes a reduced color gamut picture mode, a partial picture display mode, and an upscaled picture mode. 14 . 14 . The power saving method of claim 12 , wherein determining whether to execute the compression process on the image data according to the operation mode comprises: when the operation mode is the special mode, by a bypass The path transmits the image data in the first data format to omit the compression process. 15. The power saving method of claim 14, further comprising temporarily storing the image data in the first data format in a memory unit. 16. The power saving method of claim 12, further comprising retransmitting a transmitted image data in the first data format after the operation mode is switched from the normal mode to the special mode. 17. The power saving method of claim 16, further comprising displaying a black screen when retransmitting the transmitted image data in the first data format. 18. The power saving method of claim 12, further comprising retransmitting a transmitted image data in the second data format after the operation mode is switched from the special mode to the normal mode. 19. The power saving method of claim 18, further comprising displaying a black screen when retransmitting the transmitted image data in the second data format. 20 . The power saving method of claim 12 , wherein determining whether to execute the compression process on the image data according to the operation mode comprises: when the operation mode is the normal mode, compressing the image data. 21 . The image data in the second data format executes the compression process to generate compressed data. 21. The power saving method of claim 20, further comprising: temporarily storing the compressed data in a memory unit and performing a decompression on the compressed data when the operation mode is the normal mode a program to restore the image data in the second data format. 22. A drive circuit for a display device, the drive circuit comprising: a first signal path for receiving an image data and transmitting the image data, the first signal path includes: a compression unit for performing a compression procedure on the image data to generate a compressed data; a storage unit, coupled to the compression unit, for storing the compressed data; and a decompression unit, coupled to the storage unit, for receiving the compressed data and performing a decompression procedure on the compressed data to restore the image data; and A second signal path, when the image data is not transmitted by the first signal path, the second signal path is used to transmit the image data to the storage unit to bypass the compression unit, and transmit the image data received from the storage unit to a display unit to bypass the decompression unit; wherein, according to the characteristics of the received image data, the image data passes through one of the first signal path and the second signal path; Wherein, the characteristic of the image data includes at least one of a format, data quality, and color information of the image data; Wherein, when the image data has a first format and/or a first data quality and/or a first quantity of color information, the image data passes through the first signal path, and when the image data Color information having a second format with fewer bits than the first format and/or a second data quality lower than the first data quality and/or a second amount of color information less than the first number , the image data passes through the second signal path. 23. The driving circuit of claim 22, further comprising a format conversion unit, the format conversion unit is coupled to the storage unit, and used for executing a format conversion program to convert the data from the storage unit converting the image data with a first data format received by the unit into a second data format, or converting the image data with the second data format received from the storage unit into the first data format, and store the converted image data in the storage unit. 24. A drive circuit for a display device, the drive circuit comprising: a first signal path for receiving an image data and transmitting the image data, the first signal path includes: a compression unit for performing a compression procedure on the image data to generate a compressed data; a storage unit, coupled to the compression unit, for storing the compressed data; and a decompression unit, coupled to the storage unit, for receiving the compressed data and performing a decompression procedure on the compressed data to restore the image data; and A second signal path, when the image data is not transmitted by the first signal path, the second signal path is used to transmit the image data to the storage unit to bypass the compression unit, and transmit the image data received from the storage unit to a display unit to bypass the decompression unit; Wherein, the driving circuit is further used for receiving a message from a host device unit to indicate a first operation mode or a second operation mode, and correspondingly transmits the image data through the all operation modes under the first operation mode. the first signal path and passing the image data through the second signal path in the second mode of operation; Wherein, the image data received under the second operation mode has less color information and/or lower data quality than the first operation mode. 25. The driving circuit of claim 24, wherein the second operation mode is one of a reduced color gamut picture mode, a partial picture display mode, and an upscaled picture mode. 26. A drive circuit for a display device, the drive circuit comprising: A first signal path for receiving an image data and transmitting the image data, the first signal path includes: a compression unit, configured to perform a compression procedure on the image data when the first signal path is turned on, so as to generate a compressed data; a storage unit, coupled to the compression unit, for storing the compressed data when the first signal path is turned on; and a decompression unit, coupled to the storage unit, for receiving the compressed data when the first signal path is turned on and performing a decompression procedure on the compressed data to restore the image data; and a second signal path, when the first signal path is turned off, the second signal path is turned on, and when the second signal path is turned on, the second signal path is used to receive the image data and transmit sending the image data to the storage unit to bypass the compression unit, and sending the image data received from the storage unit to a display unit to bypass the decompression unit; Wherein, when the first signal path is turned on, the image data received by the compression unit has a first format, and when the second signal path is turned on, the image data received by the second signal path image data has a second format different from the first format; Wherein, the image data in the second format has fewer bits or color information or data quality than the image data in the first format. 27. The driving circuit of claim 26, further comprising a format conversion unit, the format conversion unit is coupled to the storage unit, and used for executing a format conversion program to convert the data from the storage unit converting the image data having the second format received by the unit into the first format, or converting the image data having the first format received from the storage unit into the second format, and storing the converted image data in the storage unit. 28. The driving circuit of claim 26, wherein an on state of the first signal path occurs in a first operating mode, and an on state of the second signal path occurs in a second in operating mode. 29. The driving circuit of claim 28, wherein the first operation mode is a general mode, and the second operation mode is a special mode. 30. The driving circuit of claim 29, wherein the special mode is a reduced color gamut picture mode, and in the reduced color gamut picture mode, the RGB color model is reduced from a first number of digits to a second Two digits, wherein the second digit is smaller than the first digit. 31. The driving circuit of claim 29, wherein the special mode is a partial screen display mode, and in the partial screen display mode, full screen display is switched to partial screen display. 32. The driving circuit of claim 29, wherein the special mode is an up-converted picture mode, in which the full-screen display is switched to an up-converted picture, which only needs to compare less data to display the full screen.

Images