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:
Jun. 16, 1998
Filed:
Jul. 18, 1996
Yutaka Ichinoi, Yokohama, JP;
Yukinobu Ishigaki, Miura, JP;
Victor Company of Japan, Ltd., Yokohama, JP;
Abstract
A frequency converting circuit has a phase divider, a switching circuit, and switching pulse generator. The phase divider divides a phase of a first input signal and outputting m-units of channel signals having a same frequency but different phases shifted 2.pi./m by 2.pi./m radian respectively, where m is a three or more natural number except 2.sup.n (n: a natural number). The m-units of the channel signals are switched by the switching circuit to output switched channel signals. In response to a second input signal having a frequency higher than that of the first input signal, the switching pulse generator generates switching pulse signals, and switches and outputs the m-units of channel signals having different phases shifted 2.pi./m by 2.pi./m radian for each constant period, by controlling the switching circuit based on the switching pulse signals. The switched channel signals are synthesized to output a signal having a frequency difference between the first input signal and the switching pulse signals or a frequency addition of the first input signal and the switching pulse signals.