Low latency wireless display for graphics

• US 9,723,359 B2
• Filed: 10/14/2016
• Issued: 08/01/2017
• Est. Priority Date: 02/04/2011
• Status: Active Grant

• Current Assignee: Qualcomm, Inc.
• Original Assignee: Qualcomm, Inc.
• Inventors: Raveendran, Vijayalakshmi R., Shaukat, Fawad, Wang, Xiaodong
• Primary Examiner(s): Alcon, Fernando
• Application Number:
  US15/293,885
• Publication Number:
  US 20170055030A1
• Time in Patent Office: 291 Days
• CPC Class Codes: G06F 3/1454 involving copying of the display data of a local workstation or window to a remote workstation or window so that an actual copy of the data is displayed simultaneously on two or more displays, e.g. teledisplay
• CPC Class Codes: G09G 2340/0407 Resolution change, inclusive of the use of different resolutions for different screen areas
• CPC Class Codes: G09G 2350/00 Solving problems of bandwidth in display systems
• CPC Class Codes: G09G 2352/00 Parallel handling of streams of display data
• CPC Class Codes: G09G 2370/04 Exchange of auxiliary data, i.e. other than image data, between monitor and graphics controller
• CPC Class Codes: G09G 2370/16 Use of wireless transmission of display information
• CPC Class Codes: H04N 21/23 Processing of content or additional data; Elementary server operations; Server middleware
• CPC Class Codes: H04N 21/25825 involving client display capabilities, e.g. screen resolution of a mobile phone optimising the visualisation of content during browsing in the Internet G06F16/9577; processing of terminal status or physical abilities in wireless networks H04W8/22; authentication in wireless network security H04W12/06
• CPC Class Codes: H04N 21/41265 having a remote control device for bidirectional communication between the remote control device and client device unidirectional remote control device H04N21/42204
• CPC Class Codes: H04N 21/435 Processing of additional data, e.g. decrypting of additional data, reconstructing software from modules extracted from the transport stream
• CPC Class Codes: H04N 21/43637 involving a wireless protocol, e.g. Bluetooth, RF or wireless LAN [IEEE 802.11] arrangements for wireless networking or broadcasting of information in indoor or near-field type systems H04B10/114
• CPC Class Codes: H04N 21/84 Generation or processing of descriptive data, e.g. content descriptors systems specially adapted for using meta-information in broadcast systems H04H60/73
• CPC Class Codes: H04W 84/12 WLAN [Wireless Local Area Networks]

Abstract

As part of a communication session, a wireless source device can transmit video component data and metadata to a wireless sink device. The wireless source device can intercept the video component data prior to the video component data being rendered by the wireless source device, and the wireless sink device can generate a frame of video data based on the video component data and the metadata.

Claims

1. A method of receiving video data from a wireless source device at a wireless sink device:

exchanging capability information with the wireless source device;

based on the exchange of capability information with the wireless source device, selecting an operating mode for the wireless sink device, wherein the operating mode comprises one of a video component mode or a pixel domain mode;

when the selected operating mode for the wireless sink device comprises the video component mode, receiving from a wireless source device a video component of a first type, a video component of a second type, and metadata, wherein the metadata identifies a position of image data for the video component of the first type relative to image data for the video component of the second type, wherein the video component of the first type comprises a call to a driver of a graphics processing unit, wherein the driver supports a graphics application program interface (API), wherein the video component of the first type further comprises one or more commands supported by the graphics API, and wherein the video component of the second type comprises pixel data;

generating a frame of video based on the video component of the first type, the video component of the second type, and the metadata.

3. The method of claim 1, wherein exchanging capability information with the wireless source device comprises transmitting to the wireless source device an indication that the wireless sink device supports the graphics API.

4. The method of claim 1, further comprising:

receiving from the wireless source device a video component of a third type, wherein the video component of the third type comprises compressed video data.

5. The method of claim 1, further comprising:

receiving from the wireless source device a video component of a third type, wherein the video component of the third type comprises audio data.

6. The method of claim 1, wherein the first metadata comprises an identifier of a frame for which the video component of the first type is associated.

7. The method of claim 1, wherein the first metadata comprises a resolution of the video component of the first type.

2. A wireless sink device comprising:

a memory;

one or more processors communicatively coupled to the memory, the one or more processors configured to;

exchange capability information with the wireless sink device;

based on the exchange of capability information with the wireless sink device, select an operating mode for the wireless source device, wherein the operating mode comprises one of a video component mode or a pixel domain mode;

when the selected operating mode for the wireless sink device comprises the video component mode, receive from a wireless source device a video component of a first type, a video component of a second type, and metadata, wherein the metadata identifies a position of image data for the video component of the first type relative to image data for the video component of the second type, wherein the video component of the first type comprises a call to a driver of a graphics processing unit, wherein the driver supports a graphics application program interface (API), wherein the video component of the first type further comprises one or more commands supported by the graphics API, and wherein the video component of the second type comprises pixel data;

generate a frame of video based on the video component of the first type, the video component of the second type, and the metadata.

8. The wireless sink device of claim 2, wherein to exchange the capability information with the wireless source device, the one or more processors transmit to the wireless source device an indication that the wireless sink device supports the graphics API.

9. The wireless sink device of claim 2, wherein the one or more processors are further configured to:

receive from the wireless source device a video component of a third type, wherein the video component of the third type comprises compressed video data.

10. The wireless sink device of claim 2, wherein the one or more processors are further configured to:

receive from the wireless source device a video component of a third type, wherein the video component of the third type comprises audio data.

11. The wireless sink device of claim 2, wherein the first metadata comprises an identifier of a frame for which the video component of the first type is associated.

12. The wireless sink device of claim 2, wherein the first metadata comprises a resolution of the video component of the first type.

13. The wireless sink device of claim 2, further comprising:

a receiver unit configured to receive a signal comprising the video component of the first type, the video component of the second type, and the metadata, wherein the receiver unit is configured to demodulate, according to a wireless communication standard, the signal.

14. The wireless sink device of claim 2, further comprising:

a display to output the frame of video.

15. The wireless sink devices of claim 2, wherein the one or more processors comprise the graphics processing unit.

16. A non-transitory computer readable storage medium storing instructions that when executed by one or more processors cause the one or more processors to:

exchange capability information with the wireless source device;

based on the exchange of capability information with the wireless source device, select an operating mode for the wireless sink device, wherein the operating mode comprises one of a video component mode or a pixel domain mode;

when the selected operating mode for the wireless sink device comprises the video component mode, receive from a wireless source device a video component of a first type, a video component of a second type, and metadata, wherein the metadata identifies a position of image data for the video component of the first type relative to image data for the video component of the second type, wherein the video component of the first type comprises a call to a driver of a graphics processing unit, wherein the driver supports a graphics application program interface (API), wherein the video component of the first type further comprises one or more commands supported by the graphics API, and wherein the video component of the second type comprises pixel data;

generate a frame of video based on the video component of the first type, the video component of the second type, and the metadata.

17. The computer readable medium of claim 16, wherein to exchange the capability information with the wireless source device comprises, the instructions cause the one or more processors to transmit to the wireless source device an indication that the wireless sink device supports the graphics API.

18. The computer readable medium of claim 16, storing further instructions that when executed cause the one or more processors to:

receive from the wireless source device a video component of a third type, wherein the video component of the third type comprises compressed video data.

19. The computer readable medium of claim 16, wherein the first metadata comprises an identifier of a frame for which the video component of the first type is associated.

20. The computer readable medium of claim 16, wherein the first metadata comprises a resolution of the video component of the first type.