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:
May. 12, 1992
Filed:
Sep. 14, 1989
Applicant:
Inventors:
Yasuhito Kobayashi, Tokyo, JP;
Junichi Matsuo, Tokyo, JP;
Assignee:
Fuji Photo Film Co., Ltd., Kanagawa, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04N / ;
U.S. Cl.
CPC ...
358330 ; 358335 ; 358310 ; 360 331 ;
Abstract
An apparatus determines a recording mode of a frequency-modulated video signal read out from a recording medium. The apparatus extracts, from demodulated video signals, pulse signals related to vertical and horizontal synchronization signals. With consideration of a period defined by these pulse signals, the apparatus sets a predetermined period, in which, a signal containing a sync tip frequency component of the frequency-modulated signal is counted to determine the recording mode depending on a resultant count.