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:
Oct. 04, 2005
Filed:
Nov. 08, 2001
Nobuyuki Yasuda, Chiba, JP;
Kazunobu Ohkuri, Kanagawa, JP;
Nobuyuki Yasuda, Chiba, JP;
Kazunobu Ohkuri, Kanagawa, JP;
Sony Corporation, Tokyo, JP;
Abstract
A sampling frequency conversion apparatus which easily controls the phase difference (time difference) between the input data and the output data in converting the sampling frequency, includes a storage devicefor continuously writing the input data or the data obtained by over-sampling the input data and for continuously reading out the data written maintaining a predetermined address difference relative to the writable address, and an interpolation processing unitfor interpolating the data read-out from the storage deviceto obtain data of which the sampling frequency is converted. In converting the sampling frequency, an address difference between a writable address and a readable address in the storage deviceis optimized, the address difference being optimized without limitation for a predetermined period of time from the start of supplying the input data and, then, being optimized by imposing a predetermined limitation after the passage of the predetermined period of time.