Network displays and method of their operation

• US 9,264,678 B2
• Filed: 01/15/2013
• Issued: 02/16/2016
• Est. Priority Date: 07/15/2005
• Status: Active Grant

• Current Assignee: Barco NV
• Original Assignee: Barco NV
• Inventors: Nuyttens, Geert, Dewaele, Ronny
• Primary Examiner(s): Weng, Peiyong
• Application Number:
  US13/741,681
• Publication Number:
  US 20140028907A1
• Time in Patent Office: 1,127 Days
• Field of Search: 715717-726, 715/736
• US Class Current: 1/1
• CPC Class Codes: G06F 3/1446 display composed of modules, e.g. video walls
• CPC Class Codes: G09G 2340/02 Handling of images in compressed format, e.g. JPEG, MPEG
• CPC Class Codes: H04N 7/181 for receiving images from a plurality of remote sources
• CPC Class Codes: H04N 9/12 Picture reproducers H04N9/11 takes precedence

Abstract

A digital networked studio and the needed software services to allow the use of the system for monitoring the creation and distribution processes of real-time created content is described.

Distribution problems are solved using an off-the-shelf network, e.g. using an IP based or similar data protocol, such as an IP network based distributed system architecture to bring the display controller functionality closer to the source and to replace proprietary busses used for transporting video, audio, RGB, graphical information and/or metadata with building blocks based on standard IP and compression technologies. A characteristic of such a network is to use unicast, multicast and/or broadcast technologies (based on network addresses) and to route data from one address to another. The network provides redundancy in case any of the digital generation units.

Claims

1. A display system for displaying streaming image data from a source of video signals on a plurality of display units linked by a network, comprising:

a network processing block that uses a progression mechanism to separate a video signal containing a video frame into multiple streams, said multiple streams each including data that, when combined by a decoder, form an image having a resolution that depends on a number of streams that are being combined and that is less than full-resolution when the number of streams that are being combined is less that the number of streams into which the video frame is divided; and

a plurality of display units linked by the network, each including at least one said decoder,

wherein the networked display units are adapted to selectively subscribe to a number of streams less than said number of streams forming said full resolution image.

2. A display system according to claim 1, wherein the progression mechanism of the network processing block provides rough scaling of the image data to reduce bandwidth for streaming, and final scaling to an exact image size is carried out locally by a display generator unit in each of the networked display units.

3. A display system according to claim 1, wherein each of the display generator units independently carries out final scaling by a configuration document stored in each respective networked display units.

4. A display system according to claim 1, further comprising a control unit for controlling distribution of the configuration document to the display generator units.

5. A display system according to claim 1, wherein a processing means of the display generator units comprises a gaming video processor for rendering the images to be displayed.

6. A display system according to claim 1, wherein a single configuration document is provided for all images to be displayed on the plurality of networked display units.

7. A display system according to claim 1, further comprising encoders for encoding said streaming image data.

8. A display system according to claim 7, wherein the encoders comprise codec logic for compressing data related to images to be displayed.

9. A display system according to claim 8, wherein the codec logic is JPEG2000 logic.

10. A method for displaying streaming image data on a plurality of display units linked by a network having one or more networked display units, comprising the steps of:

using a progression mechanism to separate a video signal containing a video frame into multiple streams, said multiple streams each including data that, when combined by a decoder, form an image having a resolution that depends on a number of streams that are being combined and that is less than full-resolution when the number of streams that are being combined is less that the number of streams into which the video frame is divided; and

a plurality of display units linked by the network selectively subscribing to a number of streams less than said number of streams forming said full resolution image.

11. A method according to claim 10, wherein the progression mechanism of the network processing block provides rough scaling of the image data to reduce bandwidth for streaming, and final scaling to an exact image size is carried out locally by a display generator unit in each of the networked display units.

12. A method according to claim 10, wherein each of the display generator units independently carries out final scaling by a configuration document stored in each respective networked display units.

13. A method according to claim 10, further comprising a control unit for controlling distribution of the configuration document to the display generator units.

14. A method according to claim 10, wherein a processing means of the display generator units comprises a gaming video processor for rendering the images to be displayed.

15. A method according to claim 10, wherein a single configuration document is provided for all images to be displayed on the plurality of networked display units.

16. A method according to claim 10, wherein a step of encoding said streaming image data comprises using codec logic for compressing data related to images to be displayed.

17. A method according to claim 16, wherein the codec logic is JPEG2000 logic.