Title: Television signal regeneration device having noise reducing circuit
Application Number: 85105499 Application Date: 1985.07.18
Publication Number: 1007062 Publication Date: 1987.01.14
Approval Pub. Date: Granted Pub. Date: 1989.11.08
International Classifi-cation: G11B20/24,H04N5/217
Applicant(s) Name: Victor Co. of Japan Ltd. Address:
Inventor(s) Name: Hirota Akira
Attorney & Agent: LI YONG
Abstract:
     The television signal regeneration device includes a regeneration circuit which is used to regenerate the television signal having fieled coherency and preset frequency band and a noise reducing circuit to be fed in the signal. The noise reducing circuit includes the first and second subtraction circuit carrying the regeneration signal. It is used to delay the first subtraction circuit output for a preset time interval and add it to a field delay circuit of the second subtraction circuit. The time interval is equal to the natural multiple of a field or a parallel scanning period. It also includes the amplitude limiter that restrict the amplitude of the second subtracter output and add it to the first subtraction circuit. The frequency band of the delay circuit is narrower than that of the regeneration signal.
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