Video signal converting device and noise eliminator used therein

Details Video signal converting device and noise eliminator used therein Video signal converting device and noise eliminator used therein

1993-08-06

1995-10-17

Groody, James J.

Television

Basic receiver with additional function

348441, 348561, 348443, H04N 701, H04N 1120

Patent

active

054595258

ABSTRACT:
An apparatus for converting an input video signal to a modified video signal comprises a memory for storing data corresponding to the input video signal, an address signal generating device for reading data from the memory and an interpolating filter for interpolating the data read from the memory to obtain a modified video signal. The data are stored and read from the memory using a clock having a predetermined frequency. However, since the number of addresses being read in one horizontal display varies with the conversion rate of video signals, the length of one horizontal display of the modified video signal is different from that of the input video signal.

REFERENCES:
patent: 4841366 (1989-06-01), Katagiri et al.
patent: 4845562 (1989-07-01), Koslov et al.
patent: 4891701 (1990-01-01), Shikina et al.
patent: 5047857 (1991-09-01), Duffield et al.
patent: 5237396 (1993-08-01), Kayashima et al.
patent: 5243421 (1993-09-01), Nagata et al.

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