Method and arrangements for processing video signals

• US 20060291558A1
• Filed: 06/23/2006
• Published: 12/28/2006
• Est. Priority Date: 06/23/2005
• Status: Abandoned Application

• Current Assignee: On Demand Microelectronics
• Original Assignee: On Demand Microelectronics
• Inventors: Schreier, Ralf Michael, Rothermel, Albrecht
• Application Number:
  US11/473,809
• Publication Number:
  US 20060291558A1
• Time in Patent Office: Days
• US Class Current: 375/240.13
• CPC Class Codes: H04N 19/107 between spatial and temporal predictive coding, e.g. picture refresh
• CPC Class Codes: H04N 19/139 Analysis of motion vectors, e.g. their magnitude, direction, variance or reliability
• CPC Class Codes: H04N 19/147 according to rate distortion criteria rate-distortion as a criterion for motion estimation H04N19/567
• CPC Class Codes: H04N 19/17 the unit being an image region, e.g. an object
• CPC Class Codes: H04N 19/61 in combination with predictive coding
• CPC Class Codes: H04N 19/89 involving methods or arrangements for detection of transmission errors at the decoder

Abstract

In accordance with the present disclosure, refresh patterns can be proposed for video data having motion and distortion estimation data for the proposed patterns can be determined based on motion data. An acceptable refresh pattern from the proposed refresh patterns can be selected and utilized. Such a “tailored” pattern that is dynamic and can change quickly, can cater to the direction of motion of the video to provide low distortion and high quality video.

Claims

1. A method for refreshing a display with video data comprising:

dividing a video frame into a plurality of refresh regions;

selecting at least one priority region from the plurality of refresh regions to receive an intra-coded refresh transmission, the selecting based on a first parameter; and

transmitting the video frame, providing the intra-coded transmission to the at least one priority region.

2. The method of claim 1 wherein the first parameter comprises a distortion parameter.

3. The method of claim 1 wherein the distortion parameter is related to a calculated distortion at a boundary area between an old region and a new region.

4. The method of claim 1 further comprising enabling border protection for non-priority regions to be transmitted inter-coded data such that when a motion is in a direction of an old region, the amount of reference data from old regions utilized by the inter-coded transmission is reduced.

5. The method of claim 4 further comprising utilizing more than one frame to obtain region motion information and utilizing the motion information to reduce the effects of border protection.

6. The method of claim 4 further comprising grouping macroblocks into regions and accumulating motion data of a plurality macroblocks assigned to the region and utilizing the motion data to reduce the effects of border protection.

7. The method of claim 1 further comprising disallowing primary sources of distortion when generating inter-coded data for non-priority regions.

8. The method of claim 1 wherein the first parameter comprises a motion parameter for all regions.

9. The method of claim 1 wherein the first parameter comprises one of an overall distortion and a distortion at a boundary of at least one region.

10. The method of claim 1 wherein the parameter comprises one of a direction of motion, a global motion and a change of a dominating direction of motion.

11. The method of claim 1 further comprising:

determining a neighboring region of a border region as a new region;

determining if a dominating direction of motion is towards the neighboring region;

calculating a distortion at a border of the neighboring region and the border region; and

selecting a refresh pattern based on the distortion.

12. The method of claim 1 further comprising generating random refresh patterns before a refresh cycle, calculating a distortion on the random refresh patterns and selecting the at least one priority region based on calculation.

13. The method of claim 1 further comprising estimating a distortion parameter for neighboring regions and selecting the at least one priority region based on the estimated distortion parameter.

14. An apparatus for providing video data comprising:

an inter-coded data generator to create predictive data;

an intra-coded data generator to create refresh data;

a multiplexer to multiplex the inter-coded data with the intra-coded data;

a calculator to calculate at least one parameter of the video data;

a mapping module to mapping the video data into non-overlapping regions; and

a frame refresh controller to determine a refresh pattern of inter-coded data and intra-coded data based on the calculated at least one parameter.

15. The apparatus of claim 14, wherein the calculator is a distortion estimator and the at least one parameter is a distortion parameter.

16. The apparatus of claim 15, further comprising a region motion estimator coupled to the distortion estimator to provide motion data to the distortion estimator . . .

17. A video system comprising:

a transmitter to transmit a compressed video signal having intra-coded transmissions mapped into non-overlapping predetermined regions based on calculated parameters;

a receiver to receive the intra-coded transmissions and to decode the compressed video into a decompressed video signal.

18. The video system of claim 17 further comprising a display to display a representation of the decompressed video signal.

19. The video system of claim 17 wherein the transmitter is a wireless transmitter.

20. The video system of claim 17 wherein the compressed video signal complies with an Internet protocol standard.