SAMPLING RATE CONVERSION DEVICE, AND SAMPLING RATE CONVERSION METHOD

Title:

SAMPLING RATE CONVERSION DEVICE, AND SAMPLING RATE CONVERSION METHOD

Document Type and Number:

WIPO Patent Application WO/2011/090110

Kind Code:

A1

Abstract:

Provided is a sampling rate conversion device for performing sampling frequency conversion, wherein the device is provided with a sampling phase detection unit (1) for obtaining a sampling phase for each operation reference clock using, as a reference, sampling time after the sampling frequency conversion, on the basis of a ratio between a frequency of the operation reference clock and a sampling frequency after the sampling frequency conversion; a sampling clock detection unit (2) for detecting a sampling cycle on the basis of the sampling phase; a polyphase filter (3) which filters input signals and generates signals after the sampling frequency conversion on the basis of the sampling cycle; and a filter coefficient control unit (4) for setting a filter coefficient to the polyphase filter (3) on the basis of the sampling phase.

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Inventors:

TOMITSUKA KOJI (JP)
SANO HIROYASU (JP)

Application Number:

PCT/JP2011/050964

Publication Date:

July 28, 2011

Filing Date:

January 20, 2011

Export Citation:

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Assignee:

MITSUBISHI ELECTRIC CORP (JP)
TOMITSUKA KOJI (JP)
SANO HIROYASU (JP)

International Classes:

H03H17/00; H03H17/02

Foreign References:

JPH1155077A	1999-02-26
JPH11191724A	1999-07-13
JPH03283810A	1991-12-13

Other References: