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:
May. 11, 1999
Filed:
Nov. 04, 1997
Applicant:
Inventors:
Hiroshi Iwamura, Saitama-ken, JP;
Kyoichi Terao, Saitama-ken, JP;
Assignee:
Pioneer Electronic Corp., Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
G06F / ;
U.S. Cl.
CPC ...
3647241 ; 341 61 ;
Abstract
An over-sampling device is provided for double over-sampling the input signal and for outputting as a sampling signal. The sampling signal is filtered at one of conversion rates of 147/160, 160/147, and 1/1 by using a prototype filter, based on the first sampling frequency and the second sampling frequency, and a filtering signal is produced. The filtering signal is filtered by a low pass filter having a predetermined cutoff frequency band, and a low frequency signal is produced. A down-sampling device is provided for down-sampling the low frequency signal by one half.