Noise removal using 180-degree or 360-degree phase shifting...

Details Noise removal using 180-degree or 360-degree phase shifting... Noise removal using 180-degree or 360-degree phase shifting...

2007-09-04

2007-09-04

Psitos, A M (Department: 2627)

Dynamic information storage or retrieval

Control of storage or retrieval operation by a control...

Mechanism control by the control signal

C369S047480, C326S026000, C327S551000

Reexamination Certificate

active

10724873

ABSTRACT:
A noise removal circuit of the present invention comprises a 180-degree odd multiple shifting section for outputting a 180-degree shifted signal that is phase-shifted from an input signal by an odd multiple of 180 degrees and difference output section for outputting a difference between the input signal and the 180-degree shifted signal. The noise removal circuit comprises a 360-degree shifting section for outputting a 360-degree shifted signal that is phase-shifted from an input signal by an integral multiple of 360 degrees and sum output section for outputting a sum of the input signal and the 360-degree shifted signal.

REFERENCES:
patent: 5394115 (1995-02-01), Lampel
patent: 6081490 (2000-06-01), Kuroda et al.
patent: 6104682 (2000-08-01), Konishi
patent: 6369624 (2002-04-01), Wang et al.
patent: 2000-293855 (2000-10-01), None

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