Timing synchronization between a content source and a display panel

Patent metadata

Field	Value
Publication number	US-11653073-B2
Application number	US-202016927600-A
Country	US
Kind code	B2
Filing date	Jul 13, 2020
Priority date	Jun 29, 2018
Publication date	May 16, 2023
Grant date	May 16, 2023

Abstract

Technology for a display device is described. The display device can include at least one display screen operable to show at least one display panel. The display device can include a controller. The controller can receive a content frame from a content source over a transport topology. The controller can receive a presentation timestamp (PTS) associated with the content frame, where the PTS indicates an earliest time at which the content frame is to be displayed at the display device. The controller can provide the content frame for display on the display panel at a subsequent panel refresh opportunity in accordance with the PTS.

First claim

What is claimed is:

1. A display panel comprising:
a display; and
logic circuitry to:
populate a timing order list to define regions of the display, the timing order list to specify respective time offsets at which corresponding ones of the regions are to be refreshed during a refresh opportunity of a single frame of content frame data to be displayed by the display, the time offsets relative to a presentation timestamp associated with the content frame data for the single frame;
obtain, from a content source, a first portion of the content frame data to be displayed in a first one of the regions associated with a first time offset in the timing order list, the first portion of the content frame data to be obtained prior to the first time offset relative to the presentation timestamp; and
refresh, based on the first portion of the content frame data, the first one of the regions of the display at a first time corresponding to the first time offset relative to the presentation timestamp.

2. The display panel of claim 1 , wherein the logic circuitry is to provide the timing order list to the content source.

3. The display panel of claim 1 , wherein the timing order list is to specify respective coordinates of the corresponding ones of the regions.

4. This display panel of claim 3 , wherein the regions are rectangles, and the respective coordinates of the corresponding ones of the regions specify top left corners and bottom right corners of the corresponding ones of the regions.

5. The display panel of claim 1 , wherein the logic circuitry is to:
obtain, from the content source, a second portion of the content frame data for a second one of the regions associated with a second time offset in the timing order list, the second portion of the content frame data to be obtained prior to the second time offset relative to the presentation timestamp; and
refresh, based on the second portion of the content frame data, the second one of the regions of the display at a second time corresponding to the second time offset relative to the presentation timestamp.

6. The display panel of claim 1 , wherein the content frame data includes multiple portions of the content frame data for a combination of the regions including the first one of the regions associated with the first time offset in the timing order list, the multiple portions of the content frame data including a second portion of the content frame data for a second one of the regions associated with a second time offset in the timing order list, and the logic circuitry is to obtain the multiple portions of the content frame data prior to the first time offset relative to the presentation timestamp.

7. The display panel of claim 1 , wherein the logic circuitry is to:
generate a synchronization timestamp; and
adjust a panel refresh rate of the display panel to align with the synchronization timestamp, wherein the first time at which the first one of the regions of the display is to be refreshed corresponds to the first time offset relative to when the synchronization timestamp corresponds to the presentation timestamp.

8. The display panel of claim 6 , wherein the presentation timestamp is obtained from the content source.

9. At least one non-transitory computer readable storage medium comprising computer readable instructions that, when executed, cause a display panel to at least:
populate a timing order list to define regions of a display, the timing order list to specify respective time offsets at which corresponding ones of the regions are to be refreshed during a refresh opportunity of a single frame of content frame data to be displayed by the display, the time offsets relative to a presentation timestamp associated with the content frame data for the single frame;
obtain, from a content source, a first portion of the content frame data to be displayed in a first one of the regions associated with a first time offset in the timing order list, the first portion of the content frame data to be obtained prior to the first time offset relative to the presentation timestamp; and
refresh, based on the first portion of the content frame data, the first one of the regions of the display at a first time corresponding to the first time offset relative to the presentation timestamp.

10. The at least one non-transitory computer readable storage medium of claim 9 , wherein the instructions cause the display panel to provide the timing order list to the content source.

11. The at least one non-transitory computer readable storage medium of claim 9 , wherein the timing order list is to specify respective coordinates of the corresponding ones of the regions.

12. The at least one non-transitory computer readable storage medium of claim 11 , wherein the regions are rectangles, and the respective coordinates of the corresponding ones of the regions specify top left corners and bottom right corners of the corresponding ones of the regions.

13. The at least one non-transitory computer readable storage medium of claim 9 , wherein the content frame data includes multiple portions of the content frame data for a combination of the regions including the first one of the regions associated with the first time offset in the timing order list, the multiple portions of the content frame data including a second portion of the content frame data for a second one of the regions associated with a second time offset in the timing order list, and the instructions cause the display panel to obtain the multiple portions of the content frame data prior to the first time offset relative to the presentation timestamp.

14. The at least one non-transitory computer readable storage medium of claim 9 , wherein the instructions cause the display panel to:
generate a synchronization timestamp; and
adjust a panel refresh rate of the display panel to align with the synchronization timestamp, wherein the first time at which the first one of the regions of the display is to be refreshed corresponds to the first time offset relative to when the synchronization timestamp corresponds to the presentation timestamp.

15. A method comprising:
populating a timing order list to define regions of a display, the timing order list to specify respective time offsets at which corresponding ones of the regions are to be refreshed during a refresh opportunity of a single frame of content frame data to be displayed by the display, the time offsets relative to a presentation timestamp associated with the content frame data for the single frame;
obtaining, from a content source, a first portion of the content frame data to be displayed in a first one of the regions associated with a first time offset in the timing order list, the first portion of the content frame data to be obtained prior to the first time offset relative to the presentation timestamp; and
refreshing, based on the first portion of the content frame data, the first one of the regions of the display at a first time corresponding to the first time offset relative to the presentation timestamp.

16. The method of claim 15 , further including providing the timing order list to the content source.

17. The method of claim 15 , wherein the timing order list is to specify respective coordinates of the corresponding ones of the regions.

18. The method of claim 17 , wherein the regions are rectangles, and the respective coordinates of the corresponding ones of the regions specify top left corners and bottom right corners of the corresponding ones of the regions.

19. The method of claim 15 ,

Assignees

• Intel Corp

Inventors

• Ansari Nausheen
• Smith Gary K
• Kambhatla Srikanth

Classifications

• H04N21/43072

  of multiple content streams on the same device · CPC title

• H04N21/8547 Primary

  involving timestamps for synchronizing content · CPC title

• H04N21/4305

  Synchronising client clock from received content stream, e.g. locking decoder clock with encoder clock, extraction of the PCR packets (arrangements for synchronising receiver with transmitter by comparing receiver clock with transmitter clock H04L7/0012; arrangements for synchronising receiver with transmitter wherein the receiver takes measures against momentary loss of synchronisation H04L7/0083) · CPC title

• G09G5/006

  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 title

• G09G2320/0252

  Improving the response speed · CPC title