Runlength coding apparatus for use in a video signal encoding sy

Details Runlength coding apparatus for use in a video signal encoding sy Runlength coding apparatus for use in a video signal encoding sy

1997-06-16

1998-10-06

Young, Brian K.

Coded data generation or conversion

Digital code to digital code converters

To or from bit count codes

341 59, H03M 746

Patent

active

058183639

ABSTRACT:
A runlength coding apparatus converts an input data stream including a plurality of zeros and non-zero values to a runlength coded signal. The apparatus has an input buffer, a runlength detector, and a level detector. First, the input buffer generates a first and a second sequences of the input data stream. The runlength detector provides runlengths based on the first and the second sequences, and generates indicating signals by checking whether each of elements in the first and the second sequences is zero. Meanwhile, the level detector supplies levels based on the indicating signals and the first and the second sequences. The detected runlengths and levels are combined a multiplicity of run-level pairs and provided as the runlength coded signal.

REFERENCES:
patent: 5668547 (1997-09-01), Lee

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