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.

Date of Patent:
Oct. 24, 2000

Filed:

Jul. 20, 1999
Applicant:
Inventor:

Muneo Fukaishi, Tokyo, JP;

Assignee:

NEC Corporation, Tokyo, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03B / ;
U.S. Cl.
CPC ...
331 57 ; 3311 / ;
Abstract

In a voltage controlled oscillator including an odd number of inverter circuits connected in a ring shape, at least one of the inverter circuits is constructed by an inverter and a current control circuit connected in series between a pre-stage inverter circuit and post-stage inverter circuit, and a voltage control circuit connected between the pre-stage inverter circuit and the post-stage inverter circuit. The inverter receives an output signal of the pre-stage inverter circuit to generate an inverted signal. The current control circuit supplies a current in accordance with the inverted signal to the post-stage inverter circuit. The current is controlled by an input voltage. The voltage control circuit charges and discharges an input capacitance of the post-stage inverter circuit in accordance with the output signal of the pre-stage inverter circuit.


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Fukaishi, Muneo. (2000). Voltage controlled oscillator including ring-shaped inverter circuits (U.S. Patent No. 6137371). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/6137371

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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