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:
May. 03, 1977
Filed:
Aug. 21, 1975
Robert Norman Hurst, Cherry Hill, NJ (US);
Robert Adams Dischert, Burlington Township, NJ (US);
RCA Corporation, New York, NY (US);
Abstract
A system is provided for compensating for signal defects such as dropouts in recorded television signals. A recovered video signal is delayed for a period of substantially one scanning line, and the delayed signal is coupled to two channels, one for the luminance and scan synchronizing information and the other for the color information. The color information is phase-reversed each time it is delayed so as to provide a proper phase relationship when reinserting the delayed information into the signal path. The two channels are recombined to provide a compensating signal which is substituted for the original video signal during a dropout. In addition, when a head-switching transient such as occurs in a quadruplex VTR is sensed, a further mode of operation is activated in which the system substitutes a portion of the prior line horizontal blanking interval for the duration of the switching transient so as to prevent degradation of the synchronizing signal and resultant disturbance to the operation of the recorder servo systems.