Data processing apparatus with adaptive compression/de-compression algorithm selection for data communication over display interface and related data processing method

• US 9,773,469 B2
• Filed: 07/30/2013
• Issued: 09/26/2017
• 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): Duley, Janese
• Application Number:
  US13/953,752
• Publication Number:
  US 20140098110A1
• Time in Patent Office: 1,519 Days
• 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 generates an output display data according to an input display data. The output interface packs the output display data into an output bitstream, and outputs the output bitstream to another data processing apparatus via a display interface. 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). In addition, the compressor adaptively adjusts a compression algorithm according to context characteristics in the input display data, power supply status, operational status of a storage device, image capture characteristic, configuration of the another data processing apparatus, and/or compression algorithm supported by the another data processing apparatus. Further, the another data processing apparatus adaptively adjusts a de-compression algorithm according to a compression algorithm supported by the compressor.

Claims

1. A data processing apparatus comprising:

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

an output interface circuit, arranged for packing the output display data into an output bitstream, and outputting the output bitstream via a display interface, 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) and compressed display data generated by the compressor circuit is transmitted over the display interface;

wherein the compressor circuit adaptively adjusts a compression algorithm applied to the input display data according to context characteristics of the input display data,

wherein the content characteristics include at least one bit rate,

wherein at least one of a complexity and a compression efficiency of the compression algorithm scales proportionally to the at least one bit rate, and

wherein the display interface is not a network interface, and the display interface is coupled between the data processing apparatus and another data processing apparatus that are located on different chips.

2. The data processing apparatus of claim 1, wherein the compressor circuit comprises:

a content analysis unit, arranged for analyzing the input display data to classify contents included in the input display data and accordingly generating a content classification result; and

a compression unit, arranged for referring to at least the content classification result to adaptively adjust the compression algorithm.

3. The data processing apparatus of claim 2, wherein the contents are selected from a group consisting of a video content, an image content, a text content, and a graphic content.

4. The data processing apparatus of claim 2, wherein the contents comprise a first content generated using a first quantization level and a second content generated using a second quantization level which is different from the first quantization level.

5. The data processing apparatus of claim 2, wherein the contents comprise a first content with a first bit rate and a second content with a second bit rate which is different from the first bit rate.

6. A data processing apparatus comprising:

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

an output interface circuit, arranged for packing the output display data into an output bitstream, and outputting the output bitstream via a display interface, 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) and compressed display data generated by the compressor circuit is transmitted over the display interface;

wherein the compressor circuit adaptively adjusts a compression algorithm applied to the input display data according to a power supply status,

wherein the power supply status indicates a battery power level,

wherein at least one of a complexity and a compression efficiency of the compression algorithm scales proportionally to the battery power level, and

wherein the display interface is not a network interface, and the display interface is coupled between the data processing apparatus and another data processing apparatus that are located on different chips.

7. The data processing apparatus of claim 6, wherein the data processing apparatus is powered by a battery device, and the power supply status indicates the battery power level of the battery device.

8. The data processing apparatus of claim 7, wherein the compressor circuit is arranged to employ a first compression algorithm as the compression algorithm when the power supply status indicates that the battery power level is higher than a predetermined threshold, and employ a second compression algorithm as the compression algorithm when the power supply status indicates that the battery power level is not higher than the predetermined threshold, where the second compression algorithm is different from the first compression algorithm.

9. The data processing apparatus of claim 8, wherein the first compression algorithm is more complex than the second compression algorithm;

or the first compression algorithm has a higher compression efficiency than the second compression algorithm.

10. The data processing apparatus of claim 7, wherein the compressor circuit is arranged to disable the compression algorithm when the power supply status indicates that the battery power level is higher than a predetermined threshold, and enable the compression algorithm when the power supply status indicates that the battery power level is not higher than the predetermined threshold.

11. A data processing apparatus comprising:

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

an output interface circuit, arranged for packing the output display data into an output bitstream, and outputting the output bitstream via a display interface, 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) and compressed display data generated by the compressor circuit is transmitted over the display interface;

wherein the compressor circuit adaptively adjusts a compression algorithm applied to the input display data according to an operational status of a storage device,

wherein the operational status indicates a storage space use level of the storage device,

wherein at least one of a complexity and a compression efficiency of the compression algorithm scales inversely to the storage space use level, and

wherein the display interface is not a network interface, and the display interface is coupled between the data processing apparatus and another data processing apparatus that are located on different chips.

12. The data processing apparatus of claim 11, wherein the compressor circuit is arranged to employ a first compression algorithm as the compression algorithm when the operational status indicates that the storage space use level is lower than a predetermined threshold, and employ a second compression algorithm as the compression algorithm when the operational status indicates that the storage space use level is not lower than the predetermined threshold, where the second compression algorithm is different from the first compression algorithm.

13. The data processing apparatus of claim 12, wherein the first compression algorithm is more complex than the second compression algorithm;

or

the first compression algorithm has a higher compression efficiency than the second compression algorithm.

14. The data processing apparatus of claim 11, wherein the compressor circuit is arranged to disable the compression algorithm when the operational status indicates that the storage space use level used bandwidth is lower than a predetermined threshold, and enable the compression algorithm when the operational status indicates that the storage space use level used bandwidth is not lower than the predetermined threshold.

15. A data processing apparatus comprising:

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

an output interface circuit, arranged for packing the output display data into an output bitstream, and outputting the output bitstream via a display interface, 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) and compressed display data generated by the compressor circuit is transmitted over the display interface;

wherein the compressor circuit adaptively adjusts a compression algorithm applied to the input display data according to at least one image capture characteristic,

wherein the at least one image capture characteristic is selected from a set of image capture characteristics including a focus level, an exposure level, and an ISO (International Organization for Standardization) value,

wherein at least one of a complexity and a compression efficiency of the compression algorithm differs for each one of the image capture characteristics, and

wherein the display interface is not a network interface, and the display interface is coupled between the data processing apparatus and another data processing apparatus that are located on different chips.

16. The data processing apparatus of claim 15, wherein the compressor circuit supports a plurality of pre-defined compression algorithms;

when the compressor circuit determines that the at least one image capture characteristic has a first value, the compression algorithm is set by a first pre-defined compression algorithm selected from the pre-defined compression algorithms; and

when the compressor circuit determines that the at least one image capture characteristic has a second value, the compression algorithm is set by a second pre-defined compression algorithm selected from the pre-defined compression algorithms.

17. A data processing apparatus comprising:

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

an output interface circuit, arranged for packing the output display data into an output bitstream, and outputting the output bitstream to another data processing apparatus via a display interface, 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) and compressed display data generated by the compressor circuit is transmitted over the display interface;

wherein the compressor circuit adaptively adjusts a compression algorithm applied to the input display data according to a configuration of the another data processing apparatus,

wherein the configuration of the another data processing apparatus is selected from a set of configurations including a buffer-less configuration, a buffer-based configuration without data buffering, and a buffer-based configuration with data buffering,

wherein at least one of a complexity and a compression efficiency of the compression algorithm differs for each one of the configurations, and

wherein the display interface is not a network interface, and the display interface is coupled between the data processing apparatus and another data processing apparatus that are located on different chips.

18. The data processing apparatus of claim 17, wherein the compressor circuit is arranged to employ a first compression algorithm as the compression algorithm when the another data processing apparatus includes the buffer-based configuration, and employ a second compression algorithm as the compression algorithm when the another data processing apparatus includes the buffer-less configuration, where the second compression algorithm is different from the first compression algorithm.

19. The data processing apparatus of claim 17, wherein the compressor circuit is arranged to employ a first compression algorithm as the compression algorithm when the another data processing apparatus is configured to directly transmit a de-compressed pixel data to a display apparatus without data buffering, and employ a second compression algorithm as the compression algorithm when the another data processing apparatus is configured to transmit the de-compressed pixel data to the display apparatus through data buffering, where the second compression algorithm is different from the first compression algorithm.

20. The data processing apparatus of claim 19, wherein a unit size of compression of the first compression algorithm is larger than a unit size of compression of the second compression algorithm.

21. A data processing apparatus comprising:

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

an output interface circuit, arranged for packing the output display data into an output bitstream, and outputting the output bitstream to another data processing apparatus via a display interface, 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) and compressed display data generated by the compressor circuit is transmitted over the display interface;

wherein the compressor circuit adaptively adjusts a compression algorithm applied to the input display data according to a de-compression algorithm supported by the another data processing apparatus,

wherein at least one of a first complexity and a first compression efficiency of the compression algorithm is compliant with at least one corresponding characteristic of the de-compression algorithm, and

wherein the display interface is not a network interface, and the display interface is coupled between the data processing apparatus and the another data processing apparatus that are located on different chips.

22. A data processing apparatus comprising:

an input interface circuit, arranged for receiving an input bitstream from another data processing apparatus via a display interface, and un-packing the input bitstream into an input display data, 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); and

a de-compressor circuit, arranged for generating a de-compressed display data according to the input display data when the input display data is a compressed display data;

wherein the de-compressor circuit adaptively adjusts a de-compression algorithm according to a compression algorithm employed by the another data processing apparatus; and

compressed display data to be decompressed by the de-compressor is transmitted over the display interface and received from the display interface,

wherein at least one characteristic of the de-compression algorithm is compliant with a corresponding one of a first complexity and a first compression efficiency of the compression algorithm, and

wherein the display interface is not a network interface, and the display interface is coupled between the data processing apparatus and the another data processing apparatus that are located on different chips.

23. A data processing method comprising:

receiving an input display data;

adaptively adjusting a compression algorithm according to context characteristics of the input display data;

generating an output display data according to the compression algorithm and the input display data; and

packing the output display data into an output bitstream, and outputting the output bitstream via a display interface, 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) and compressed display data generated by the compression algorithm is transmitted over the display interface,

wherein the content characteristics include at least one bit rate,

wherein at least one of a complexity and a compression efficiency of the compression algorithm scales proportionally to the at least one bit rate, and

wherein the display interface is not a network interface, and the display interface is coupled between a data processing apparatus implementing the data processing method and another data processing apparatus that are located on different chips.

24. A data processing method comprising:

receiving an input display data;

adaptively adjusting a compression algorithm according to a power supply status;

generating an output display data according to the compression algorithm and the input display data; and

packing the output display data into an output bitstream, and outputting the output bitstream via a display interface, wherein the display interface is a display serial interface (DSI) standardized by a Mobile Industry Processor Interface (MIDI) or an embedded display port (eDP) standardized by a Video Electronics Standards Association (VESA) and compressed display data generated by the compression algorithm is transmitted over the display interface,

wherein the power supply status indicates a battery power level,

wherein at least one of a complexity and a compression efficiency of the compression algorithm scales proportionally to the battery power level, and

wherein the display interface is not a network interface, and the display interface is coupled between a data processing apparatus implementing the data processing method and another data processing apparatus that are located on different chips.

25. A data processing method comprising:

receiving an input display data;

adaptively adjusting a compression algorithm according to an operational status of a storage device;

generating an output display data according to the compression algorithm and the input display data; and

packing the output display data into an output bitstream, and outputting the output bitstream via a display interface, 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) and compressed display data generated by the compression algorithm is transmitted over the display interface,

wherein the operational status indicates a storage space use level of the storage device,

wherein at least one of a complexity and a compression efficiency of the compression algorithm scales inversely to the storage space use level, and

wherein the display interface is not a network interface, and the display interface is coupled between a data processing apparatus implementing the data processing method and another data processing apparatus that are located on different chips.

26. A data processing method comprising:

receiving an input display data;

adaptively adjusting a compression algorithm according to at least one image capture characteristic;

generating an output display data according to the compression algorithm and the input display data; and

packing the output display data into an output bitstream, and outputting the output bitstream via a display interface, 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) and compressed display data generated by the compression algorithm is transmitted over the display interface,

wherein the at least one image capture characteristic is selected from a set of image capture characteristics including a focus level, an exposure level, and an ISO (International Organization for Standardization) value,

wherein at least one of a complexity and a compression efficiency of the compression algorithm differs for each one of the image capture characteristics, and

wherein the display interface is not a network interface, and the display interface is coupled between a data processing apparatus implementing the data processing method and another data processing apparatus that are located on different chips.

27. A data processing method comprising:

receiving an input display data;

adaptively adjusting a compression algorithm according to a configuration of another data processing apparatus;

generating an output display data according to the compression algorithm and the input display data; and

packing the output display data into an output bitstream, and outputting the output bitstream to the another data processing apparatus via a display interface, 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) and compressed display data generated by the compression algorithm is transmitted over the display interface,

wherein the configuration of the another data processing apparatus is selected from a set of configurations including a buffer-less configuration, a buffer-based configuration without data buffering, and a buffer-based configuration with data buffering,

wherein at least one of a complexity and a compression efficiency of the compression algorithm differs for each one of the configurations, and

wherein the display interface is not a network interface, and the display interface is coupled between a data processing apparatus implementing the data processing method and the another data processing apparatus that are located on different chips.

28. A data processing method comprising:

receiving an input display data;

adaptively adjusting a compression algorithm according to a de-compression algorithm supported by another data processing apparatus;

generating an output display data according to the compression algorithm and the input display data; and

packing the output display data into an output bitstream, and outputting the output bitstream to the another data processing apparatus via a display interface, 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) and compressed display data generated by the compression algorithm is transmitted over the display interface,

wherein at least one of a first complexity and a first compression efficiency of the compression algorithm is compliant with at least one corresponding characteristic of the de-compression algorithm, and

wherein the display interface is not a network interface, and the display interface is coupled between a data processing apparatus implementing the data processing method and the another data processing apparatus that are located on different chips.

29. A data processing method comprising:

receiving an input bitstream from another data processing apparatus via a display interface, and un-packing the input bitstream into an input display data, 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);

adaptively adjusting a de-compression algorithm according to a compression algorithm employed by the another data processing apparatus; and

when the input display data is a compressed display data, generating a de-compressed display data according to the input display data and the de-compression algorithm;

wherein compressed display data to be decompressed by the de-compression algorithm is transmitted over the display interface and received from the display interface,

wherein at least one characteristic of the de-compression algorithm is compliant with a corresponding one of a first complexity and a first compression efficiency of the compression algorithm, and

wherein the display interface is not a network interface, and the display interface is coupled between a data processing apparatus implementing the data processing method and the another data processing apparatus that are located on different chips.