Encoder based error resilience method in a video codec

Details Encoder based error resilience method in a video codec Encoder based error resilience method in a video codec

2005-03-10

2008-11-18

Torres, Joseph D (Department: 2112)

Error detection/correction and fault detection/recovery

Pulse or data error handling

Error/fault detection technique

C714S747000, C375S240120, C375S240180, C375S240210, C375S240220

Reexamination Certificate

active

07454692

ABSTRACT:
Improved error resiliency of an encoding device, such as a video codec or encoder, operating in a compressed data transmission system, is achieved by enabling the encoding device to “shadow” or mimic the error conditions of a decoding device that receives and decodes compressed data sent by the encoding device. The encoding device is made aware of the specific error concealment scheme that the decoding device employs to reconstruct video frame data from a bit stream that contains bit or packet errors, and is also made aware of the location(s) in the frame to which the erroneous data corresponds and the particular manner in which the erroneous data was handled. The error-concealed data then can be used not only for the present encoding, but for subsequent encodings as well, to achieve synchronization between the encoder and decoder. Advantageously, the present invention improves on, but can work with, conventional error concealment schemes.

REFERENCES:
patent: 6327689 (2001-12-01), Tian
patent: 6744816 (2004-06-01), Park et al.
patent: 6768775 (2004-07-01), Wen et al.
patent: 2003/0043856 (2003-03-01), Lakaniemi et al.
patent: 2004/0168110 (2004-08-01), Fuldseth et al.

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