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:
Jul. 08, 1980
Filed:
Jan. 15, 1979
Fuji Photo Film Co., Ltd., Minami-ashigara, JP;
Abstract
In a laser beam recording system employing a rotating polygonal mirror for deflecting a recording light beam and a read-out light beam for synchronization, a linear encoder is used to generate a video clock signal in synchronization with the photoelectric pulse signal obtained through the linear encoder. In the video clock signal generator, a clock signal is divided into 1/n where n is an integral number to provide a reference pulse signal to be compared with the photoelectric pulse signal. The displacement of the phase of the photoelectric pulse signal from the reference pulse signal is detected and is corrected by a phase comparator. Thus, a video clock signal having a frequency of n-times as large as that of the photoelectric pulse signal is generated.