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:
Sep. 06, 1994
Filed:
Jan. 15, 1993
Woo C Shin, Seoul, KR;
Goldstar Co., Ltd., Seoul, KR;
Abstract
An apparatus for separating vertical synchronizing signal components from image signals in a VCR of a double rotation head helical scanning system. The apparatus comprises a level detecting unit for detecting the level of an output signal from an amplifying unit, a comparing unit for comparing the output signal from the level detecting unit with a reference voltage (V.sub.1), a switching unit operable according to the output signal from the comparing unit, and a limiting unit for limiting an output signal from a demodulating unit to a predetermined limit voltage (V.sub.2) via the switching unit upon the operation of the switching unit. The apparatus achieves an accurate separation of vertical synchronizing signal components in all cases of using a combined head for a SP/LP mode and using a single head for a SP mode or a LP mode.