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. 20, 1999
Filed:
Oct. 07, 1997
Nobuyuki Yasuda, Chiba, JP;
Sony Corporation, Tokyo, JP;
Abstract
A sampling frequency converting apparatus according to present invention is such an apparatus in which, when a first digital signal of a sampling frequency Fsi is converted into a second digital signal of an arbitrary sampling frequency Fso by using a digital filter, the ratio between the sampling frequency Fsi and the sampling frequency Fso is obtained and this input/output sampling frequency ratio is utilized as a control amount for the sampling frequency conversion. The sampling frequency converting apparatus includes a buffer memory for temporarily storing the first digital signal, an operating unit for performing an interpolation processing with respect to the input/output sampling frequency ratio at every regular time and a calculating unit which calculates a read address of the buffer memory on the basis of the input/output sampling frequency ratio interpolated by the operating unit.