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:
Feb. 21, 1989
Filed:
Apr. 23, 1982
Dale W Marland, Canastota, NY (US);
Eagle Comtronics, Inc., Clay, NY (US);
Abstract
An in-band television signal scrambling method and apparatus are disclosed which employ a scrambler which receives and scrambles a television signal by suppressing the amplitude of the horizontal synchronizing signals contained therein to a point below the 'black' level and which generates whiter-than-white timing pulses in the scrambled television signal for use by a descrambler in reconstructing the suppressed amplitude horizontal synchronizing signals, and one or more descramblers for detecting the whiter-than-white timing pulses in the scrambled television signal and generating therefrom switching signals for a switchable attenuator through which the scrambled television signal passes. The attenuator boosts the amplitude of the suppressed amplitude horizontal synchronizing signals relative to the remainder of the scrambled television signal, thereby restoring the scrambled television signal to an unscrambled condition.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile