Variable length code decoder for simultaneous decoding the most

Details Variable length code decoder for simultaneous decoding the most Variable length code decoder for simultaneous decoding the most

1994-05-19

1996-07-30

Hoff, Marc S.

Coded data generation or conversion

Digital code to digital code converters

To or from variable length codes

341 65, H03M 740, H03M 742

Patent

active

055415954

ABSTRACT:
A variable length decoder for decoding a variable length code. The variable length decoder includes a first look-up table for receiving and decoding the most significant bits of the variable length code and for producing a first decoded code corresponding to the most significant bits. The first look-up table means also for outputs a conversion signal. In addition, a second look-up table is provided for receiving and decoding the least significant bits and for producing a second decoded code corresponding to the least significant bits. The first look-up table and the second look-up table decode the most significant bits and the least significant bits at substantially the same time. The decoded output of the look-up tables is provided to a selector. The selector selects the first decoded code or the second decoded code based upon the conversion signal.

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D. Luthi, P. Tong, P. Ruetz, "A Video-Rate JPEG Chip Set", IEEE Custom Integrated Circuits Conference, 1992.
S. Lei, M. Sun, "An Entropy Coding System for Digital HDTV Applications", IEEE Transactions on Circuits and Systems For Video Technology, vol. 1, No. 1, Mar. 1991.

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