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. 26, 2005
Filed:
Sep. 04, 2003
Applicant:
David Shiung, Tainan, TW;
Inventor:
David Shiung, Tainan, TW;
Assignee:
Novatek Microelectronics Corp., Hsinchu, TW;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H03B021/00 ;
U.S. Cl.
CPC ...
Abstract
The present invention provides an all-digital frequency synthesizer circuit using interpolation technique and Linear Feedback Shift Register (LFSR). This synthesizer adaptively outputs two sequences stored in a bank of memory, or shift register. Using the idea of interpolation, all synthesizable frequencies located between two predetermined threshold frequencies can be obtained, and resolution is determined by the order of LFSR thereby. A frequency synthesizing system is also included in the present invention.