IP Library Granted Patent US 9,077,995
Granted Patent B2
US 9,077,995 · App. 14/522,325 · Granted Jul 7, 2015

Video processing system and transcoder for use with layered video coding and methods for use therewith

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Quick Facts
Patent No.
US 9,077,995
App. No.
14/522,325
Granted
Jul 7, 2015
Kind
B2
Abstract

A video processing system includes a video transcoder that receives a independent video layer stream and a first dependent video layer stream that requires the independent video layer for decoding, the video transcoder generating a transcoded video signal based at least one of the independent video stream and the dependent video layer stream.

Claims (41)

1. A video processing system comprising:

a transceiver configured to transmit a video signal to a receiving device and configured to receive a device parameter indicative of an ability of the receiving device to process video; and

a video selection module communicatively coupled to the transceiver to select, in accordance with the device parameter, a first digital format of the video signal to be transmitted by the transceiver to the receiving device;

wherein the video signal is generated in the first digital format by transcoding from a second digital format wherein the second digital format includes a plurality of video streams including a base layer stream and at least one additional layer stream that enhances the base layer stream and wherein the transcoding includes synchronizing and combining selected ones of the plurality of video streams.

2. The system of claim 1 , further comprising:

a control module coupled to the transceiver, wherein the control module is configured to detect a channel characteristic indicative of an ability of one or more RF channels to deliver the video signal to the receiving device; and

wherein the video selection module is configured to select the first digital format, further based on the channel characteristic.

3. The system of claim 2 , wherein the channel characteristic comprises at least one of: bit error rate, packet error rate, signal-to-noise ratio, signal strength, signal-to-noise and interference ratio, throughput, packet retransmission rate, or a reception parameter.

4. The system of claim 2 , wherein the control module is configured to select a transmission parameter for transmitting the video signal in accordance with the detected channel characteristic.

5. The system of claim 4 , wherein the transmission parameter comprises at least one of: modulation spectral densities, data rate, or forward error correction code.

6. The system of claim 1 , wherein the transceiver comprises a multi-input multi-output (MIMO) transceiver.

7. The system of claim 6 , wherein the MIMO transceiver is configured to select a subset of MIMO channels for transmitting the video.

8. The system of claim 1 , wherein the device parameter comprises at least one of: a device display resolution, a frame rate, a color property, or a power state.

9. The system of claim 1 , wherein the base layer stream comprises most significant bits of motion vector data; and the at least one additional layer stream comprises least significant bits of the motion vectors.

10. The system of claim 1 , wherein the base layer stream comprises grayscale data; and

the at least one additional layer stream comprises color data referenced to the grayscale data.

11. The system of claim 1 , wherein the base layer stream comprises a low resolution signal; and the at least one additional layer stream comprises data to enhance the low resolution signal.

12. A method performed by a video processing system comprising:

receiving, via a transceiver from a receiving device, a device parameter indicative of an ability of the receiving device to process video; and

selecting a first digital video format based on the device parameter;

wherein input video streams include a base layer stream and at least one additional layer stream that enhances the base layer stream;

wherein a plurality of input video streams include a base layer stream and at least one additional layer stream that enhances the base layer stream;

wherein a transcoded video signal is generated from the plurality of input video streams by synchronizing and combining selected ones of the plurality of input video streams to generate the transcoded video signal in the first digital video format; and

the transcoded video signal is transmitted from a transceiver to the receiving device.

13. The method of claim 12 , wherein the at least one additional layer stream includes a plurality of additional layer streams and generating the transcoded video signal further comprises:

combining the base layer stream and the plurality of additional layer streams.

14. The method of claim 13 , further comprising:

modifying at least one of the base layer stream and the at least one additional layer stream prior to combining the base layer stream and the at least one additional layer stream.

15. The method of claim 12 , wherein the base layer stream includes an integer portion of motion vector data and the at least one additional layer stream includes a fractional portion of the motion vector data.

16. The method of claim 12 , wherein generating the transcoded video signal further comprises:

transcoding the input video streams to change at least one of frame rate, resolution, and color scale.

17. The method of claim 12 , wherein the device parameter comprises at least one of: a device display resolution, a frame rate, a color property, or a power state.

18. A wireless access device comprising:

a transceiver configured to communicate with a receiving device by performing operations comprising:

connecting the receiving device to a network;

transmitting a video signal over one or more radio frequency (RF) channels to the receiving device; and

receiving a device parameter indicative of an ability of the receiving device to process video; and

a video selection module coupled to the transceiver to select, in accordance with the device parameter, a first digital format of the video signal to be transmitted by the transceiver to the receiving device;

wherein the video signal is generated in the first digital format by transcoding from a second digital format wherein the second digital format includes a plurality of video streams including a base layer stream and at least one additional layer stream that enhances the base layer stream and wherein the transcoding includes synchronizing and combining selected ones of the plurality of video streams.

19. The wireless access device of claim 18 , wherein the transceiver is configured to communicate with the receiving device over a cellular network or a wireless local area network.

20. The wireless access device of claim 18 , wherein the device parameter comprises at least one of: a device display resolution, a frame rate, a color property, or a power state.

Assignments (7)
CORRECTIVE ASSIGNMENT TO CORRECT THE PATENT NUMBER 9,385,856 TO 9,385,756 PREVIOUSLY RECORDED AT REEL: 47349 FRAME: 001. ASSIGNOR(S) HEREBY CONFIRMS THE MERGER. Recorded Mar 22, 2019
From: AVAGO TECHNOLOGIES GENERAL IP (SINGAPORE) PTE. LTD.
To: AVAGO TECHNOLOGIES INTERNATIONAL SALES PTE. LIMITED
Reel/Frame 051144/0648 →
CORRECTIVE ASSIGNMENT TO CORRECT THE EFFECTIVE DATE PREVIOUSLY RECORDED ON REEL 047229 FRAME 0408. ASSIGNOR(S) HEREBY CONFIRMS THE THE EFFECTIVE DATE IS 09/05/2018. Recorded Oct 29, 2018
From: AVAGO TECHNOLOGIES GENERAL IP (SINGAPORE) PTE. LTD.
To: AVAGO TECHNOLOGIES INTERNATIONAL SALES PTE. LIMITED
Reel/Frame 047349/0001 →
MERGER Recorded Oct 4, 2018
From: AVAGO TECHNOLOGIES GENERAL IP (SINGAPORE) PTE. LTD.
To: AVAGO TECHNOLOGIES INTERNATIONAL SALES PTE. LIMITED
Reel/Frame 047229/0408 →
TERMINATION AND RELEASE OF SECURITY INTEREST IN PATENTS Recorded Feb 3, 2017
From: BANK OF AMERICA, N.A., AS COLLATERAL AGENT
To: BROADCOM CORPORATION
Reel/Frame 041712/0001 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Feb 1, 2017
From: BROADCOM CORPORATION
To: AVAGO TECHNOLOGIES GENERAL IP (SINGAPORE) PTE. LTD.
Reel/Frame 041706/0001 →
PATENT SECURITY AGREEMENT Recorded Feb 11, 2016
From: BROADCOM CORPORATION
To: BANK OF AMERICA, N.A., AS COLLATERAL AGENT
Reel/Frame 037806/0001 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jan 19, 2015
From: GORDON, STEPHEN ELLIOTT; CHEN, SHERMAN (XUEMIN); DOVE, MICHAEL; ROSMANN, DAVID; QUIGLEY, THOMAS J.; KARAOGUZ, JEYHAN
To: BROADCOM CORPORATION
Reel/Frame 034745/0624 →