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. 27, 1990
Filed:
Aug. 01, 1988
Raymond Jones, Marshfield, MA (US);
Other;
Abstract
This invention is directed at a video stabilizer which removes non standard AGC pulses added to a video signal for inhibiting the making of acceptable video recordings of the video signal which includes filtering out the horizontal synchronizing signals form the composite synchronization signal, while passing the vertical synchronizing signal; differentiating the vertical synchronizing signals; applying the differentiated signal to a first electronic device; turning the first electronic device off at the end of the vertical synchronizing signal and charging the first capacitor providing a first ramp voltage; applying the first ramp voltage to a first pair of comparator amplifiers; applying the output signal of the first pair of comparator amplifiers to a first amplifier shunting a poriton of the output signal through a first diode array and the remaining portion of the output signal to charging a second capacitor providing a second ramp voltage; the second ramp voltage being applied to a second amplifier; the output of the second amplifier being applied to a second diode array; and then clamping the output of a second electronic device to 0.4 of a volt.