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. 04, 2006
Filed:
Jan. 07, 2003
Hiromi Honma, Tokyo, JP;
Kinji Kayanuma, Tokyo, JP;
Hiromi Honma, Tokyo, JP;
Kinji Kayanuma, Tokyo, JP;
NEC Corporation, Tokyo, JP;
Abstract
A VCO, which good temperature characteristics, high frequency accuracy, and high phase accuracy is provided as an LSI, without making its master clock frequency operate the VCO high. The VCO includes a digital VCO, a phase modulator, and a frequency band limiting element. The digital VCO outputs an oscillating frequency clock and a phase difference lower than an output cycle resolution at the same timing as the output of the oscillating frequency clock. The phase modulator makes side-band components of the output from the digital VCO move from positions near the fundamental frequency to farther bands by modulating the phase of the output from the digital VCO based on the phase difference.