High-efficiency encoding apparatus and high-efficiency decoding

Details High-efficiency encoding apparatus and high-efficiency decoding High-efficiency encoding apparatus and high-efficiency decoding

1994-07-29

1997-07-01

DeBoer, Todd

Coded data generation or conversion

Digital code to digital code converters

To or from variable length codes

348384, 341 59, H03M 740

Patent

active

056443056

ABSTRACT:
A high-efficiency encoding apparatus having a data division circuit which applies 1-dimensional scanning to the orthogonal-transformed data obtained by applying orthogonal transformation to blocked digital data in the unit of block and divides the data into run-length data and coefficient data, an encoding circuit which applies run-length encoding to the divided run-length data by employing data of the highest probability of occurrence (for example 0), and an encoding circuit which applies run-length encoding to the divided coefficient data by employing data of the highest probability of occurrence (for example 1), thereby reduces the amount of the digital data.

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patent: 4704628 (1987-11-01), Chen et al.
patent: 5166987 (1992-11-01), Kageyama
patent: 5291282 (1994-03-01), Nakagawa et al.
patent: 5432555 (1995-07-01), Park
"An Experimental Digital VCR with 40 MM Drum, Single Actuator and DCT-Based Bit-Rate Reduction", IEEE Transactions on Consumer Electronics, Aug. 1988, vol. 34 No. 3, pp. 597-605.

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