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. 26, 1983
Filed:
Dec. 09, 1980
Fuji Photo Film Co., Ltd., Kanagawa, JP;
Abstract
A laser recording device adapted for use in a facsimile system in which a semiconductor laser is activated by a series of pulses the number of which is produced in accordance with an input signal. The input signal is sampled with a sampling pulse signal whereas the pulses applied to the semiconductor laser are produced at a frequency which is at least two orders of magnitude greater than the frequency of the pulses used to sample the input signal. The input signal is digitized and used to address a read-only memory which outputs a number of pulses in dependence upon the amplitude of the input signal. The output number of pulses may be logarithmically related to the magnitude of the input signal.