Decoding equalizer

Details Decoding equalizer Decoding equalizer

1988-09-19

1990-08-14

Britton, Howard W.

Facsimile and static presentation processing

Static presentation processing

Attribute control

358138, 358141, H04N 712

Patent

active

049491687

ABSTRACT:
A decoding equalizer of high definition television signal transmission mode, such as MUSE, and a subrange-type A/D converter suitable for the equalizer. The decoding equalizer samples input data in equalization at a frequency twice the sampling frequency of the trunk system, with the equalizing A/D converter operating at a lower resolution and higher speed than the A/D converter for the trunk system. The subrange-type A/D converter includes A/D converters in multiple stages, with their driving clock frequencies having a specified relationship so that they are used commonly for the A/D conversdion of the high definition television signal and the A/D conversion of a test signal for detecting the transmission characteristics.

REFERENCES:
patent: 4621286 (1986-11-01), Reitmeier et al.
patent: 4661839 (1987-04-01), Plantholt et al.
patent: 4800427 (1989-01-01), Plantholt
"An HDJV Broadcasting System Utilizing a Bandwidth Compression Technique-MUSE", IEEE Transaction, vol. BC-33 #4; Dec. '87; Ninomiya et al.; pp. 130-160.
Patent Abstracts of Japan; vol. 12 #13; Jan. '80.

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