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:
Mar. 17, 1998
Filed:
Sep. 26, 1996
Yasuaki Sumi, Tottori, JP;
Sanyo Electric Co., Ltd., Moriguchi, JP;
Tottori Sanyo Electric Co., Ltd., Tottori-ken, JP;
Abstract
In a variable frequency divider capable of N+1/2 frequency division, a programmable frequency divider alternately frequency-divides an input signal by a frequency division ratio N (N being an integer) or by a frequency division ratio N+1. A first signal generating circuit generates a first signal in synchronism with an output signal of the programmable frequency division circuit. A second signal generating circuit generates a second signal which is identical to the first signal but delayed by half a period of the input signal. An output circuit alternately selects the first and second signals, and outputs the selected signal as frequency-divided signal. A delay circuit outputs a delayed signal identical to the first signal but delayed by one period of the input signal. A preset signal generating circuit alternately selects the delayed signal and the first signal, and presets the programmable frequency division circuit with the selected signal. The programmable frequency divider used may operate at the same speed as in N frequency division.