Method and system for displaying pixels on display devices

• US 9,741,316 B2
• Filed: 06/24/2013
• Issued: 08/22/2017
• Est. Priority Date: 06/22/2012
• Status: Active Grant

• Current Assignee: Universität des Saarlandes
• Original Assignee: Universität des Saarlandes
• Inventors: Loeffler, Alexander, Pica, Luciano, Miroll, Jochen, Herfet, Thorsten, Slusallek, Philipp
• Primary Examiner(s): OLSON, JASON C
• Application Number:
  US14/410,038
• Publication Number:
  US 20150187333A1
• Time in Patent Office: 1,520 Days
• CPC Class Codes: G06F 3/1438 using more than one graphics controller
• CPC Class Codes: G06F 3/1446 display composed of modules, e.g. video walls
• CPC Class Codes: G09G 2300/026 Video wall, i.e. juxtaposition of a plurality of screens to create a display screen of bigger dimensions
• CPC Class Codes: G09G 2352/00 Parallel handling of streams of display data
• CPC Class Codes: G09G 2360/04 Display device controller operating with a plurality of display units
• CPC Class Codes: G09G 2370/025 LAN communication management
• 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 2370/22 Detection of presence or absence of input display information or of connection or disconnection of a corresponding information source
• CPC Class Codes: G09G 5/008 Clock recovery
• CPC Class Codes: G09G 5/04 using circuits for interfacing with colour displays
• CPC Class Codes: G09G 5/12 Synchronisation between the display unit and other units, e.g. other display units, video-disc players

Abstract

A method for displaying pixels on display devices, comprising the steps of (a) Providing virtual pixel storage means, preferably one or more virtual frame buffers (6), for temporarily storing the pixel data, (b) Receiving pixel data into the virtual pixel storage means (6) from one or more pixel sources (5), (c) Processing the pixel data stored in the virtual pixel storage means, based on characteristic display parameters characterizing the display devices; and (d) Transmitting the pixel data from the virtual pixel storage means (6) to one or more virtual displays attached to the virtual pixel storage means via a network (7), based on a network transmission protocol. The invention further relates to a system for displaying pixels on display devices.

Claims

1. A method for distributing pixel data to physical display devices, the method comprising:

(a) providing one or more virtual frame-buffers, for temporarily storing the pixel data generated by pixel sources,

(b) generating one or more virtual displays with display parameters representing one or more of the physical display devices;

(c) receiving pixel data into the one or more virtual frame buffers from one or more pixel sources,

(d) processing the pixel data stored in the one or more virtual frame buffers, based on the display parameters; and

(e) transmitting the processed pixel data from the one or more virtual frame buffers to the virtual displays via a network, based on a network transmission protocol.

2. The method according to claim 1, characterized in that one or more virtual displays announce their characteristic display parameters in the network.

3. The method according to claim 1, characterized in that one or more pixel operations are performed after transmitting the pixel data based on the display parameters.

4. The method according to claim 1, characterized in that the one or more virtual displays are organized tree-like in one or more composite virtual displays with one or more master displays and one or more slave virtual displays, wherein the one or more slave virtual displays form the leaves of the tree-like organization.

5. The method according to claim 4, characterized in that a virtual display master (DM) is selected for holding the one or more composite virtual displays.

6. The method according to claim 1, characterized in that one or more pixel processing pipelines each with one or more processing elements for performing operations on the pixel data are generated.

7. The method according to claim 1, characterized in that the pixel data to be transmitted is encoded or compressed.

8. The method according to claim 1, characterized in that the pixel data is color converted or scaled.

9. The method according to claim 1, characterized in that when a pixel operation reduces the amount of pixel data to be transmitted, the processing of the pixel operation is performed on the pixel data, by the one or more virtual frame buffers or when a pixel operation increases the amount of pixel data to be transmitted the processing of the pixel operation is performed on the transmitted pixel data by the virtual display.

10. The method according to claim 1, characterized in that an outside access interface of the virtual frame buffer to the network is provided for one of the following:

pixel managing applications,

gathering announced pixel storage and display device information,

directing available pixel storage content onto available display devices, or

updating pixel storage and display device properties where available.

11. The method according to claim 1 characterized in that synchronization information is included at the virtual frame buffer for synchronizing the displaying of pixels at the individual display devices.

12. The method according to claim 1, characterized in that step (e) is performed via a wireless or cable based network.

13. The method according to claim 1, characterized in that a plurality of channels are created within the virtual frame buffer and are transmitted to the one or more virtual displays for presentation.

14. The method according to claim 1, characterized in that the pixel data are adapted globally or locally.

15. The method according to claim 14, characterized in that for global adaption encoding parameters of the pixel data are adapted towards low latency or by choosing an upper bit rate limit.

16. The method according to claim 14, characterized in that for local adaption different importance values are assigned to the pixel data, wherein the importance values are used to indicate an importance of individual pixels.

17. The method according to claim 16, characterized in that defined blocks of the pixel data are adapted according to importance values by adding a correction value.

18. The method according to claim 1, characterized in that before displaying the pixels, the pixel data of these pixels is adapted based on quality level data.

19. The method according to claim 1, characterized in that a generation of pixel data provided by the pixel sources is divided between the pixel sources and the display devices.

20. A system for distributing pixel data to physical display devices, comprising

(a) one or more virtual frame buffers, for temporarily storing the pixel data generated by pixel sources,

(b) a generator for generating one or more virtual displays with display parameters representing one or more of the physical display devices;

(c) a processor for processing the pixel data stored in the one or more virtual frame buffers, based on display parameters characterizing the display devices; and

(d) a network for transmitting the processed pixel data from the one or more virtual frame buffers to the one or more virtual displays attached to the virtual frame buffers based on a network transmission protocol.