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:
Jul. 18, 1978
Filed:
Dec. 23, 1976
Werner Scholz, Gehrden, DE;
Abstract
A composite input video signal, having blanking intervals and including line sync pulses increasing the amplitude of the input signal, is applied to the circuit, is amplitude filtered, and is split into a BA-signal, which is fed to an adding stage, and line sync pulses which are fed to a monostable multivibrator which converts the line sync pulses into output pulses having an amplitude within the amplitude range of the filtered video signal, and these output pulses are also supplied to the adding stage. The output of the adding stage is applied to the input of a storage controlled by a timing pulse sequence from a timing pulse generator. The output pulses of the monostable multivibrator are supplied to a phase comparator having an input connected to the output of the storage through a gating device. The phase comparator supplies a variable to the timing pulse generator to control its frequency. The gating device transmits only during the line blanking interval A of the BA-signal, and thus transmits only the added multivibrator output pulses supplied to the input of the storage. The multivibrator output pulses and the video signal BA coincide, in time, at both the input and the output of the storage, so that the storage effects a delay exactly equal to the respective duration of a line.