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. 09, 2001
Filed:
Mar. 26, 1998
Applicant:
Inventors:
J. William Whikehart, Novi, MI (US);
Terry Robert Altmayer, Dearborn, MI (US);
Assignee:
Visteon Global Technologies, Inc., Dearborn, MI (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04B 1/69 ;
U.S. Cl.
CPC ...
H04B 1/69 ;
Abstract
A dither signal source generates a dither signal which is spectrally shaped in a desired manner. One or more notches are located at desired frequencies while minimizing the hardware required in a digital signal processor for generating the digital random noise for the dither signal source. The notched dither signal can be added to an analog signal prior to digitization to reduce quantization distortion without adding noise to the frequency range of interest.