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:
Dec. 21, 1982
Filed:
Jul. 31, 1980
Nicholas Kucharewski, Lebanon, NJ (US);
RCA Corporation, New York, NY (US);
Abstract
A circuit for counting pulses which may be used, for example, to provide a power on reset signal after power is applied to a circuit, employing charge transfer between two capacitors. The counter charges a first capacitor to a first voltage level between input pulses. During each input pulse, a portion of the charge stored on the first capacitor is transferred to the second capacitor. The voltage across the second capacitor increases with each input pulse. When the voltage on the second capacitor reaches a predetermined threshold level, an output signal is provided by a threshold detector to indicate that a predetermined number of input pulses has been counted. The second capacitor is then discharged in order to reset the pulse counter before beginning another counting cycle.