Data processing apparatus with adaptive compression algorithm selection for data communication based on sensor input/display configuration over display interface and related data processing method

• US 9,466,258 B2
• Filed: 07/30/2013
• Issued: 10/11/2016
• Est. Priority Date: 10/09/2012
• Status: Active Grant

• Current Assignee: MediaTek, Inc.
• Original Assignee: MediaTek, Inc.
• Inventors: Ju, Chi-Cheng, Liu, Tsu-Ming
• Primary Examiner(s): Perungavoor, Sath V
• Assistant Examiner(s): Brown, Jr., Howard D
• Application Number:
  US13/954,963
• Publication Number:
  US 20140098114A1
• Time in Patent Office: 1,169 Days
• US Class Current: 1/1
• CPC Class Codes: G06F 3/14 Digital output to display device ; Cooperation and interconnection of the display device with other functional units
• CPC Class Codes: G06T 1/20 Processor architectures; Processor configuration, e.g. pipelining
• CPC Class Codes: G06T 9/00 Image coding bandwidth or redundancy reduction for static pictures H04N1/41; coding or decoding of static colour picture signals H04N1/64; methods or arrangements for coding, decoding, compressing or decompressing digital video signals H04N19/00
• CPC Class Codes: G09G 2330/021 Power management, e.g. power saving
• CPC Class Codes: G09G 2340/02 Handling of images in compressed format, e.g. JPEG, MPEG
• CPC Class Codes: G09G 2340/04 Changes in size, position or resolution of an image
• CPC Class Codes: G09G 2350/00 Solving problems of bandwidth in display systems
• CPC Class Codes: G09G 2370/08 Details of image data interface between the display device controller and the data line driver circuit
• CPC Class Codes: G09G 2370/10 Use of a protocol of communication by packets in interfaces along the display data pipeline
• CPC Class Codes: G09G 5/005 Adapting incoming signals to the display format of the display terminal
• CPC Class Codes: G09G 5/006 Details of the interface to the display terminal specific for a display terminal using a CRT G09G1/167; using a flat panel G09G3/2096; circuits for interfacing with colour displays G09G5/04
• CPC Class Codes: H04N 19/10 using adaptive coding
• CPC Class Codes: H04N 19/12 Selection from among a plurality of transforms or standards, e.g. selection between discrete cosine transform [DCT] and sub-band transform or selection between H.263 and H.264
• CPC Class Codes: H04N 19/136 Incoming video signal characteristics or properties
• CPC Class Codes: H04N 19/156 Availability of hardware or computational resources, e.g. encoding based on power-saving criteria
• CPC Class Codes: H04N 19/164 Feedback from the receiver or from the transmission channel
• CPC Class Codes: H04N 19/172 the region being a picture, frame or field

Abstract

A data processing apparatus has a compressor and an output interface. The compressor receives an input display data, and generates an output display data according to the input display data. The output interface packs the output display data into an output bitstream, and outputs the output bitstream via a display interface. The compressor adaptively adjusts a compression algorithm applied to the input display data according to at least one sensor input signal. For example, the at least one sensor input signal is generated from at least one of an ambient light sensor, a proximity sensor, a thermal sensor, an accelerometer, a gyroscope, and a receiver of a global navigation satellite system.

Claims

1. A data processing apparatus comprising:

a compressor, arranged for receiving an input a first display data and generating an output a second display data according to the first display data;

and an output interface, arranged for packing the second display data into an output bitstream, and outputting the output bitstream via a display interface;

wherein the compressor adaptively adjusts a compression algorithm applied to the first display data according to at least one sensor input signal that is generated from at least one of an ambient light sensor, a thermal sensor, an accelerometer, a gyroscope, and a receiver of a global navigation satellite system;

the compressor is arranged to employ a first compression algorithm as the compression algorithm when the at least one sensor input signal indicates a first value, and employ a second compression algorithm as the compression algorithm when the at least one sensor input signal indicates a second value different from the first value, where the second compression algorithm is different from the first compression algorithm.

2. The data processing apparatus of claim 1, wherein the display interface is a display serial interface (DSI) standardized by a Mobile Industry Processor Interface (MIPI) or an embedded display port (eDP) standardized by a Video Electronics Standards Association (VESA).

3. The data processing apparatus of claim 1, wherein the at least one sensor input signal is generated from the ambient light sensor;

and the compressor is arranged to employ the first compression algorithm as the compression algorithm when the at least one sensor input signal indicates that an ambient light strength is higher than a predetermined threshold, and employ the second compression algorithm as the compression algorithm when the at least one sensor input signal indicates that the ambient light strength is not higher than the predetermined threshold.

4. The data processing apparatus of claim 3, wherein the first compression algorithm has a more aggressive compression ratio than the second compression algorithm.

6. The data processing apparatus of claim 1, wherein the at least one sensor input signal is generated from the thermal sensor;

and the compressor is arranged to employ the first compression algorithm as the compression algorithm when the at least one sensor input signal indicates that a temperature is higher than a predetermined threshold, and employ the second compression algorithm as the compression algorithm when the at least one sensor input signal indicates that the temperature is not higher than the predetermined threshold.

7. The data processing apparatus of claim 6, wherein the first compression algorithm is less complex than the second compression algorithm.

8. The data processing apparatus of claim 1, wherein the at least one sensor input signal is generated from the accelerometer;

and the compressor is arranged to employ the first compression algorithm as the compression algorithm when the at least one sensor input signal indicates that acceleration is higher than a predetermined threshold, and employ the second compression algorithm as the compression algorithm when the at least one sensor input signal indicates that the acceleration is not higher than the predetermined threshold.

9. The data processing apparatus of claim 8, wherein the first compression algorithm has a more aggressive compression ratio than the second compression algorithm.

10. The data processing apparatus of claim 1, wherein the at least one sensor input signal is generated from the gyroscope;

and the compressor is arranged to employ the first compression algorithm as the compression algorithm when the at least one sensor input signal indicates a first moving direction, and employ the second compression algorithm as the compression algorithm when the at least one sensor input signal indicates that a second moving direction different from the first moving direction, where the first compression algorithm is configured to perform prediction along the first moving direction, and the second compression algorithm is configured to perform prediction along the second moving direction.

11. The data processing apparatus of claim 1, wherein the at least one sensor input signal includes sensor input signals generated from the accelerometer and the gyroscope;

and the compressor is arranged to employ the first compression algorithm as the compression algorithm when the at

least one sensor input signal indicates that a view angle is within a predetermined range, and employ the second compression algorithm as the compression algorithm when the at least one sensor input signal indicates that view angle is out of the predetermined range.

12. The data processing apparatus of claim 11, wherein the second compression algorithm has a more aggressive compression ratio than the first compression algorithm.

13. The data processing apparatus of claim 1, wherein the at least one sensor input signal is generated from a receiver of a global navigation satellite system;

the compressor is arranged to employ a first compression algorithm as the compression algorithm when the at least one sensor input signal indicates that a location of the data processing apparatus has a coordinate associated with a first place, and employ a second compression algorithm as the compression algorithm when the at least one sensor input signal indicates that the location of the data processing apparatus has a coordinate associated with a second place, where the second compression algorithm is different from the first compression algorithm.

5. A data processing apparatus comprising:

a compressor, arranged for receiving a first display data and generating a second display data according to the first display data;

and an output interface, arranged for packing the second display data into an output bitstream, and outputting the output bitstream via a display interface;

wherein the compressor adaptively adjusts a compression algorithm applied to the first display data according to at least one sensor input signal that is generated from a proximity sensor;

the compressor is arranged to enable the compression algorithm when the at least one sensor input signal indicates that a

distance is larger than a predetermined threshold, and disable the compression algorithm when the at least one sensor input signal indicates that the distance is not larger than the predetermined threshold;

when the compression algorithm is enabled based on the distance, the compressor applies data compression to the first display data, and when the compression algorithm is disabled based on the distance, the compressor does not apply data compression to the first display data.

14. A data processing method comprising:

receiving a first display data;

adaptively adjusting a compression algorithm according to at least one sensor input signal;

utilizing a compressor for generating a second display data according to the first display data and the compression algorithm;

and packing the second display data into an output bitstream, and outputting the output bitstream via a display interface;

wherein the at least one sensor input signal is generated from at least one of an ambient light sensor, a thermal sensor, an accelerometer, a gyroscope, and a receiver of a global navigation satellite system;

the compressor employs a first compression algorithm as the compression algorithm when the at least one sensor input signal indicates a first value, and employs a second compression algorithm as the compression algorithm when the at least one sensor input signal indicates a second value different from the first value, where the second compression algorithm is different from the first compression algorithm.

15. The data processing method of claim 14, wherein the display interface is a display serial interface (DSI) standardized by a Mobile Industry Processor Interface (MIPI) or an embedded display port (eDP) standardized by a Video Electronics Standards Association (VESA).

16. A data processing method comprising:

receiving a first display data;

adaptively adjusting a compression algorithm according to at least one sensor input signal;

utilizing a compressor for generating a second display data according to the first display data and the compression algorithm; and

packing the second display data into an output bitstream, and outputting the output bitstream via a display interface;

wherein the at least one sensor input signal is generated from a proximity sensor;

the compressor enables the compression algorithm when the at least one sensor input signal indicates that a distance is larger than a predetermined threshold, and disables the compression algorithm when the at least one sensor input signal indicates that the distance is not larger than the predetermined threshold;

when the compression algorithm is enabled based on the distance, the compressor applies data compression to the first display data, and when the compression algorithm is disabled based on the distance, the compressor does not apply data compression to the first display data.