System and method for performing error correction on still frame

Details System and method for performing error correction on still frame System and method for performing error correction on still frame

1988-03-21

1989-09-12

Atkinson, Charles E.

Excavating

358336, 360 381, G06F 1110

Patent

active

048667196

ABSTRACT:
A system and method for performing error correction on an SFAT format video signal which has been encoded using an error correction code ECC2, and generating a video signal reconstructed from the error-corrected input signal. The error code preferably is a cross interleave Reed-Solomon code. In a preferred embodiment, the system is capable of reconstructing the output video signal so that it has either SFA or SFAT format. Since an SFAT signal includes duobinary encoded data in its active video areas, and thus may be doubly error encoded using two error correction codes (ECC1 and ECC2), the invention is capable of generating from such a doubly encoded signal an ECC1 error-encoded video signal, in SFA (or SFAT) format, which has been error-corrected using error code ECC2. This capability is particularly advantageous where the invention is embodied in a video disk mastering system or method. In a preferred embodiment, the invention also determines the error rate of the input signal and generates a report signal indicative of the input signal's detected error rate. A preferred embodiment of the invention performs both error correction and error detection on-line, in real time, and automatically.

REFERENCES:
patent: 4308557 (1981-12-01), Dieterich
patent: 4577237 (1986-03-01), Collins
patent: 4646301 (1987-02-01), Okamoto et al.
patent: 4694456 (1987-09-01), Morita et al.

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