Moving-picture coding and/or decoding system resistant to transmission error
AssigneeKabushiki Kaisha Toshiba
InventorsTakeshi Nagai, Kenshi Dachiku, Takeshi Chujoh, Yoshihiro Kikuchi, Toshiaki Watanabe
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Abstract
An input image signal is coded by an encoder to be outputted as a basic code string, and the basic code string is delayed by a code-string delay circuit for a predetermined period of time to be outputted as an additional code string. The basic code string is synthesized with the additional code string by a code-string synthesizer to be outputted as an output code string. Thus, there is provided an image data coding system which can quickly restore data even if the data is lost due to error and in which the increased code amount is less than the cycle refresh and the error correction.
Claims11
A coding apparatus, comprising:
- an encoder for coding an image data signal for transmitting encoded image information, said image data signal comprising:
- an encoded image stream including a code string composed of a first synchronization code,
- a basic code string obtained by coding an input image signal,
- an additional code string including at least a part of said basic code string, and
- a second synchronization code.
A coding apparatus, comprising:
- an encoder for coding an image data signal stored in a computer readable medium, said image data signal comprising:
- an encoded image stream including a code string composed of a first synchronization code,
- a basic code string obtained by coding an input image signal,
- an additional code string including at least a part of said basic code string, and
- a second synchronization code.
A method of coding encoded image information, the method comprising:
- coding an image data signal for transmitting the encoded image information, said image data signal comprising:
- an encoded image stream including a code string composed of a first synchronization code,
- a basic code string obtained by coding an input image data signal,
- an additional code string including at least a part of said basic code string, and
- a second synchronization code.
A method of coding an image data, the method comprising:
- coding said image data signal stored in a computer readable medium, said image data signal comprising:
- an encoded image stream including a code string composed of a first synchronization code,
- a basic code string obtained by coding an input image data signal,
- an additional code string including at least a part of said basic code string, and
- a second synchronization code.
A moving-picture signal coding system having improved error resilience in a transmission channel, comprising:
- basic code-string forming means for coding an input image signal to output a basic code string;
- additional code-string forming means for forming an additional code string including at least a part of said basic code string;
- first synchronizing signal adding means for adding a first synchronizing signal to said basic code string;
- second synchronizing signal adding means for adding a second synchronizing signal to said additional code string;
- and
- code-string combining means for combining said additional code string added to the second synchronizing signal with said basic code string added to the first synchronizing signal so as to output a combined code string.
A moving-picture signal coding system having improved error resilience in a transmission channel, comprising:
- a basic code-string forming part configured to code an input image signal to output a basic code string;
- an additional code-string forming part configured to form an additional code string including at least a part of said basic code string;
- a first synchronizing signal adder configured to add a first synchronizing signal to said basic code string;
- a second synchronizing signal adder configured to add a second synchronizing signal to said additional code string;
- and
- a code-string combining part configured to combine said additional code string added to the second synchronizing signal with said basic code string added to the first synchronizing signal so as to output a combined code string.
A moving-picture signal coding method having improved error resilience in a transmission channel, comprising:
- coding an input image signal to output a basic code string;
- forming an additional code string including at least a part of said basic code string;
- adding a first synchronizing signal to said basic code string;
- adding a second synchronizing signal to said additional code string;
- and
- combining said additional code string added to the second synchronizing signal with said basic code string added to the first synchronizing signal so as to output a combined code string.
Dependencies are inferred from the claim text.