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:
Apr. 27, 1993
Filed:
Nov. 15, 1991
Tetsuro Nakata, Kanagawa, JP;
Naotaka Tachibana, Kanagawa, JP;
Sony Corporation, Tokyo, JP;
Abstract
Image switching apparatus for selecting first or second video signals to be broadcasted, displayed or recorded, thereby producing special video effects. The output of a random noise generator is filtered by a filtering device having a variable filter characteristic that is controlled by an adjustable filter control signal. The filtered random noise signal is compared with a reference level that changes with respect to time, and the output of the comparator controls a switch to select one or the other of the video signals, depending upon whether the filtered random noise signal exceeds the changing reference level, thus producing special image switching effects.