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. 17, 1983
Filed:
Apr. 29, 1981
Applicant:
Inventors:
Yuji Ohara, Asaka, JP;
Masahiro Ohnishi, Asaka, JP;
Assignee:
Fuji Photo Film Co., Ltd., Kanagawa, JP;
Primary Examiner:
Int. Cl.
CPC ...
G01D / ;
U.S. Cl.
CPC ...
346108 ; 346 / ; 358298 ;
Abstract
A laser recorder in which pictures with gradations at equal density intervals are reproduced with a high accuracy. An input analog video signal is sampled with a sampling pulse at a predetermined sampling rate. For each value of the sampled input signal, a number of high frequency pulses are outputted to modulate a semiconductor laser. The high frequency pulses are outputted so as to be distributed substantially in equal numbers on either side of the center of each sampling period.