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:
Nov. 17, 1981
Filed:
Apr. 10, 1979
Applicant:
Inventor:
Hiroshi Minakuchi, Kadoma, JP;
Assignee:
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03L / ;
U.S. Cl.
CPC ...
331 / ; 307273 ; 331-8 ; 331 25 ; 331 27 ;
Abstract
A first frequency-to-voltage converter develops a first voltage representative of a standard frequency. A variable frequency source is provided to furnish a pulse sequence with constant-duration but variable repetition pulses. A frequency-to-voltage converter receives the pulse sequence to develop a second voltage representative of a total pulse energy generated in the pulse sequence per unit time. The deviation of the second voltage from the first voltage is detected by a comparator to control the variable frequency source to derive a desired frequency.