Pseudo fixed data transmission device and method

Details Pseudo fixed data transmission device and method Pseudo fixed data transmission device and method

1996-07-30

1999-03-23

Hoff, Marc S.

Coded data generation or conversion

Digital code to digital code converters

To or from variable length codes

341 63, H03M 740

Patent

active

058866523

ABSTRACT:
For the transmission of variable length coded data blocks, a threshold arithmetic calculation circuit (9) obtains a threshold from an average of the bit lengths of the variable length coded data blocks for each group of such block, and the judgment circuit (10) makes a judgment as to whether or not those variable length coded data blocks have bit lengths exceeding the threshold of the block group to which such data blocks belong. Then, a block divider circuit 11 divides the variable length coded data blocks having bit lengths exceeding the threshold into blocks having small bit lengths. Each block thus obtained is fixedly equalized in bit length to an average length level and transmitted in that condition.

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David Redmil "Robust architectures for image Video Coding" 2nd International Workshop on Mobile Multimedia Communcications (MoMuC), Apr. 1995.
H. Suda and T. Miki "An Error Protected 16kbit/s Voice Transmission for Land Mobile Radio Channel" IEEE J-SAC, vol. 6, No. 2. pp. 346-352, 1988.
J. Hagenauer "Rate-compatible punctured convolutional codes (RCPC codes) and their applications" IEEE Trans. on Communications, COM-26, pp. 389-400, Apr. 1988.

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