Signal processing with frequency component detection in two mode

Details Signal processing with frequency component detection in two mode Signal processing with frequency component detection in two mode

Filed on

1995-11-13

Date issued

2000-10-31

Examiner

Loomis, Paul

Patent Class

Dynamic magnetic information storage or retrieval

SubClass

Automatic control of a recorder mechanism

SubSubClass

Controlling the record

Other Related Categories

360 29, 360 31, 360 7801, G11B 1518

Type

Patent

Status

active

Patent number

061411701

Description

ABSTRACT:
There is provided in an embodiment according the present invention, a signal processing device comprising detecting means for detecting a predetermined frequency component of the input signal; modulating means for modulating the input signal and supplying the modulated signal to a recording device; and switching means for supplying, in a first state, the output of the modulating means to the detecting means, and for supplying, in a second state, a reproduced signal to the detecting means from a reproducing device. With the aforementioned construction, the detection circuit that detects a predetermined frequency component included in the modulated digital signal can be used during recording as well as during signal reproduction, which greatly contributes to reducing the size and cost of the recording/reproducing device.

REFERENCES:
patent: 4979052 (1990-12-01), Matsuta et al.
patent: 4984100 (1991-01-01), Takayama et al.
patent: 5151699 (1992-09-01), Moryama
patent: 5157359 (1992-10-01), Nogami et al.
patent: 5333082 (1994-07-01), Kizu
patent: 5365232 (1994-11-01), Ido et al.
patent: 5432651 (1995-07-01), Maeno et al.
patent: 5450443 (1995-09-01), Siegel et al.
patent: 5481414 (1996-01-01), Takada et al.

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