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:
Jan. 20, 2004
Filed:
Feb. 06, 2001
Masaharu Uchino, Aikawamachi, JP;
Kazuhiko Ishibe, Samukawamachi, JP;
Anritsu Corporation, Tokyo, JP;
Abstract
An amplitude data generator receives L-bit data, and outputs amplitude data of a predetermined periodic function of a phase specified by the data. A frequency setter sets frequency data of (K+L−1) bits obtained by dividing a desired output frequency by a frequency of a predetermined clock signal. A K bit counter counts the clock signal. L-set product and sum computation circuits subject the frequency data of (K+L−1) bits into L-set K-bit data in which a start bit is shifted by one bit each other. Then, these circuits compute a logical product between the counter output of K bits from the counter and a bit unit, and obtains a total number of bits for each set when the computation result is 1. A shifting/adding circuit adds each total number data obtained by the L-set product and sum computation circuits by shifting a bit, and outputs the least significant L bits of the computation result to the amplitude data generator.