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. 05, 1995
Filed:
Feb. 15, 1994
Hirohiko Shibata, Tokyo, JP;
NEC Corporation, Tokyo, JP;
Abstract
A RC filter circuit is disclosed which includes a first time constant circuit composed of a first resistor and a first capacitor, a switch circuit transferring, when conductive, an input signal to the first time constant circuit, and a pulse generator generating and supplying a pulse signal to the switch circuit to control conductive and non-conductive states of the switch circuit. The pulse generator includes a second time constant circuit composed of a second resistor and a second capacitor and responding a clock signal to generate the pulse signal which has a cycle period dependent on the clock signal and a pulse width dependent on a time constant of the second time constant circuit.