Processing of impaired and incomplete multi-latticed video streams

• US 8,971,402 B2
• Filed: 06/17/2008
• Issued: 03/03/2015
• Est. Priority Date: 06/17/2008
• Status: Active Grant

• Current Assignee: Cisco Technology, Inc. (Cisco Systems, Inc.)
• Original Assignee: Cisco Technology, Inc. (Cisco Systems, Inc.)
• Inventors: Rodriguez, Arturo A., Shepherd, Gregory
• Primary Examiner(s): Patel, Jay
• Assistant Examiner(s): Sun, Yulin
• Application Number:
  US12/141,019
• Publication Number:
  US 20100003015A1
• Time in Patent Office: 2,450 Days
• Field of Search: 375/240.01
• US Class Current: 375/240.01
• CPC Class Codes: H04L 1/0045 Arrangements at the receiver end
• CPC Class Codes: H04N 19/65 using error resilience
• CPC Class Codes: H04N 19/66 involving data partitioning, i.e. separation of data into packets or partitions according to importance
• CPC Class Codes: H04N 19/895 in combination with error concealment
• CPC Class Codes: H04N 21/26275 for distributing content or additional data in a staggered manner, e.g. repeating movies on different channels in a time-staggered manner in a near video on demand system
• CPC Class Codes: H04N 21/64322 IP

Abstract

An apparatus for facilitating reception of multiple representations of a video signal. In one embodiment, the apparatus includes a mechanism for receiving plural representations of the video signal corresponding to plural decimated versions of the video signal, associating pictures of the received plural representations of the video signal, and outputting pictures corresponding to information from associated pictures in accordance with a relative temporal order.

Claims

1. A method for receiving and outputting one or more representations of a video signal in a video stream, the method comprising:

receiving a video stream, wherein the video stream includes one or more representations of a video signal, wherein each of the one or more representations of the video signal (OOMROTVS) includes a respective sequence of compressed pictures, wherein each of the OOMROTVS represents a respectively corresponding decimated version of the video signal, wherein each compressed picture of each of the OOMROTVS represents a respectively corresponding decimated picture of the video signal, wherein each respective picture of the video signal is represented by at most one compressed picture of each of the OOMROTVS;

selectively shifting a first representation of the video signal relative to a second representation of the video signal;

outputting plural reconstructed pictures, wherein each of the plural reconstructed pictures comprises information corresponding to one or more received compressed pictures that represent the same respective picture of the video signal, wherein each of the plural reconstructed pictures is reconstructed in accordance with plural pixel sampling lattices (PPSL), wherein each of the PPSL respectively corresponds to a decimated version of the video signal, and wherein each of the plural reconstructed pictures corresponds to a respective picture of the video signal;

determining at least one impaired portion of a first received compressed picture that represents a first picture of the video signal; and

outputting a first reconstructed picture corresponding to the first picture of the video signal, wherein the first reconstructed picture excludes information corresponding to the at least one determined impaired portion of the first received compressed picture (ALODIPOTFRCP), wherein the first reconstructed picture comprises information corresponding to a first plurality of received compressed pictures (FPORCP), and wherein each of the FPORCP represents the first picture of the video signal, wherein the FPORCP excludes the first received compressed picture.

2. The method of claim 1, wherein each of the FPORCP respectively corresponds to one of the PPSL, and wherein the information corresponding to each of the FPORCP is included in the first reconstructed picture in accordance with its respectively corresponding pixel sampling lattice.

3. The method of claim 2, further comprising:

deriving information from a first set of one or more received compressed pictures of the FPORCP, wherein the first set excludes the first received compressed picture; and

including in one or more pixel locations of the first reconstructed picture the derived information, wherein the one or more pixel locations of the first reconstructed picture respectively correspond to one or more pixel locations of the ALODIPOTFRCP.

4. The method of claim 1, wherein the number of pixel sampling lattices in the PPSL is greater than the number of representations of the video signal in the received video stream.

5. The method of claim 4, wherein each of a first set of pixel sampling lattices in the PPSL respectively corresponds to the OOMROTVS in the received video stream, wherein a second set of pixel sampling lattices includes all of the PPSL except for the first set of pixel sampling lattices, and further comprising:

deriving information from the received compressed pictures of the OOMROTVS, and including the derived information in plural pixel locations of the plural reconstructed pictures, wherein the plural pixel locations of the plural reconstructed pictures correspond to the second set of pixel sampling lattices for each of the plural reconstructed pictures.

6. The method of claim 1, wherein at least one of the plural reconstructed pictures comprises information corresponding to only one compressed picture that represents a first picture of the video signal.

7. The method of claim 1, wherein the first received compressed picture corresponds to a first representation of the video signal (FROTVS), and further comprising:

outputting a second reconstructed picture corresponding to a second picture of the video signal, wherein the second reconstructed picture comprises of information corresponding to a first set of one or more received compressed pictures that represent the second picture of the video signal, and wherein the first set includes a compressed picture of the FROTVS.

8. The method of claim 1, further comprising:

outputting a first reconstructed picture, wherein the first reconstructed picture corresponds to a first picture of the video signal, wherein the first reconstructed picture comprises of information corresponding to a first set one or more received compressed pictures (FSOOOMRCP) that represent the first picture of the video signal, and wherein none of FSOOOMRCP are impaired;

outputting a second reconstructed picture, wherein the second reconstructed picture corresponds to a second picture of the video signal, wherein the second reconstructed picture comprises of information corresponding to a second set of one or more received compressed pictures (SSOOOMRCP) that represent the second picture of the video signal, wherein at least a portion of one of the compressed pictures in the SSOOOMRCP is impaired; and

deriving information from non-impaired information of the SSOOOMRCP;

wherein the second reconstructed picture includes the derived information.