Data transmission method, data transmission system and portable display device

Patent metadata

Field	Value
Publication number	US-2017221447-A1
Application number	US-201515324862-A
Country	US
Kind code	A1
Filing date	Dec 28, 2015
Priority date	Aug 6, 2015
Publication date	Aug 3, 2017
Grant date	—

Abstract

The present disclosure discloses a data transmission method, a data transmission system and a portable display device, relates to the technical field of display, and can reduce power consumption of the portable display device and improve battery endurance of the portable display device. The data transmission method comprises: compressing display data; transmitting the compressed display data; and decompressing the compressed display data. The data transmission method and the data transmission system according to the present disclosure are used for data transmission between a processor and a source drive circuit in the portable display device.

First claim

1 . A data transmission method for data transmission between a processor and a source drive circuit in a portable display device, the data transmission method comprising:
compressing display data; transmitting the compressed display data; and decompressing the compressed display data.

2 . The data transmission method according to claim 1 , wherein a compression format for compressing the display data is a lossless compression format or a loss compression format.

3 . The data transmission method according to claim 2 , further comprising, before compressing display data: diagnosing a battery level of the portable display device; and
wherein compressing display data comprises: selecting a compression format according to the battery level of the portable display device, and compressing the display data in the selected compression format.

4 . The data transmission method according to claim 3 , wherein selecting the compression format according to the battery level of the portable display device further comprises:
determining whether the battery level of the portable display device is lower than a preset value; and selecting the lossless compression format if the battery level of the portable display device is no lower than the preset value; and selecting the loss compression format if the battery level of the portable display device is lower than the preset value.

5 . The data transmission method according to claim 3 , wherein compressing the display data further comprises: after the compression format is selected according to the battery level of the portable display device, selecting a compression ratio according to the battery level of the portable display device, and compressing the display data in the selected compression format and compression ratio.

6 . The data transmission method according to claim 5 , wherein selecting the compression ratio according to the battery level of the portable display device comprises:
selecting a smaller compression ratio as the battery level of the portable display device becomes lower.

7 . The data transmission method according to claim 2 , wherein the lossless compression format is APE, FLAC, TAC, WavPack or TTA; and the loss compression format is mp3, divX, Xvid, jpeg, rm, rmvb, wma or wmv.

8 . The data transmission method according to claim 1 , wherein a compression ratio of compressing the display data is within 15%˜60%.

9 . A data transmission system for data transmission between a processor and a source drive circuit in a portable display device, the data transmission system comprising:
a compression module, configured to compress display data; a transmission module with an input connected to an output of the compression module, and configured to transmit the compressed display data; and a decompression module with an input connected to an output of the transmission module, and configured to decompress the compressed display data.

10 . The data transmission system according to claim 9 , wherein a compression format for compressing the display data by the compression module is a lossless compression format or a loss compression format.

11 . The data transmission system according to claim 10 , further comprising: a battery level diagnosis module with an output connected to an input terminal of the compression module, and configured to diagnose a battery level of the portable display device;
and wherein the compression module comprises a compression format selection unit configured to select a compression format for compressing the display data according to the battery level of the portable display device.

12 . The data transmission system according to claim 11 , wherein the compression format selection unit is further configured to:
determine whether the battery level of the portable display device is lower than a preset value; and select the lossless compression format if the battery level of the portable display device is no lower than the preset value; and select the loss compression format if the battery level of the portable display device is lower than the preset value.

13 . The data transmission system according to claim 11 , wherein the compression module further comprises a compression ratio selection unit, configured to select a compression ratio for compressing the display data according to the battery level of the portable display device.

14 . The data transmission system according to claim 10 , wherein the compression ratio selection unit is further configured to select a smaller compression ratio as the battery level of the portable display device becomes lower.

15 . The data transmission system according to claim 10 , wherein the lossless compression format is APE, FLAC, TAC, WavPack or TTA; and the loss compression format is mp3, divX, Xvid, jpeg, rm, rmvb, wma or wmv.

16 . The data transmission system according to claim 9 , wherein a compression ratio of compressing the display data by the compression module is within 15%˜60%.

17 . A portable display device, comprising a processor, a source drive circuit and the data transmission system according to claim 9 , an output of the processor being connected to the input of the compression module, and an output of the decompression module being connected to an input of the source drive circuit.

18 . The portable display device according to claim 17 , further comprising: a timing controller with an input connected to the output of the transmission module and an output connected to the input of the source drive circuit, the decompression module being integrated in the timing controller.

19 . The portable display device according to claim 17 , further comprising: a gamma correction circuit with an input connected to the output of the decompression module and an output connected to the input of the source drive circuit.

20 . The data transmission method according to claim 4 , wherein compressing the display data further comprises: after the compression format is selected according to the battery level of the portable display device, selecting a compression ratio according to the battery level of the portable display device, and compressing the display data in the selected compression format and compression ratio.

Assignees

• Boe Technology Group Co Ltd
• Beijing Boe Optoelectrics Tech Co Ltd

Inventors

• He Quanhua
• Zhang Hao
• Shi Lingyun
• Wang Guangquan
• Bo Jian

Classifications

• H04N19/156

  Availability of hardware or computational resources, e.g. encoding based on power-saving criteria · CPC title

• H04W52/0261

  managing power supply demand, e.g. depending on battery level · CPC title

• G09G2350/00

  Solving problems of bandwidth in display systems · CPC title

• G09G2310/08

  Details of timing specific for flat panels, other than clock recovery · CPC title

• G09G2320/0673

  for control of gamma adjustment, e.g. selecting another gamma curve · CPC title