CHARGED MAIN FILTER CIRCUIT

Title:

CHARGED MAIN FILTER CIRCUIT

Document Type and Number:

Japanese Patent JP2007324659

Kind Code:

A

Abstract:

To provide a charged main filter circuit for preventing a signal from being deteriorated when passing a broadband signal.

The charged main filter circuit 120 comprises an SINC filter circuit 140, where frequency characteristics have SINC function characteristics, and a BPF 160 that is connected to the poststage of the SINC filter circuit 140 and has frequency characteristics with a prescribed frequency as the center one. In this case, the BPF 160 subtracts one portion of previous sampling output from current sampling output in synchronization with the clock of the SINC filter circuit 140, and compensates the frequency characteristics of the SINC filter circuit 140.

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Inventors:

IIDA YUKIO

Application Number:

JP2006149367A

Publication Date:

December 13, 2007

Filing Date:

May 30, 2006

Export Citation:

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Assignee:

SONY CORP

International Classes:

H03H19/00; H03H11/04

Attorney, Agent or Firm:

Miaki Kametani
Tetsuo Kanamoto
Koji Hagiwara

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