The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 21, 1995
Filed:
Dec. 16, 1992
Shingo Kamiya, Hamamatsu, JP;
Yamaha Corporation, , JP;
Abstract
A device for reducing noise includes a first delay circuit for producing a first delay signal which is spacewise continuous to a current signal, a second delay circuit for producing a second delay signal which is timewise continuous to the current signal, first and second signal coincidence judging circuits for comparing the current signal with the first and second delay signals at a smapling period and judging whether or not difference in level between the current signal and the first and second delay signals is below a predetermined value continuously for a predetermined number of samples, and a conditional averaging circuit for providing, when it has been judged by the first or second signal coincidence judging circuit that the condition that difference in level between the current signal and the first or second delay signals is below the predetermined value continuously for the predetermined number of samples has been satisfied, an output signal which is an average value of one or both of the delay signals satisfying said condition and the current signal and providing, when there is no delay signal satisfying said condition, the current signal as an output signal thereof. Video S/N and color S/N of signals reproduced from video disc player etc. can be improved in the stage of a composite video signal.