Reproducing apparatus having an arithmetic circuit to linearly c

Details Reproducing apparatus having an arithmetic circuit to linearly c Reproducing apparatus having an arithmetic circuit to linearly c

1990-05-22

1992-01-28

Richardson, Robert L.

Dynamic information storage or retrieval

Specific detail of information handling portion of system

Radiation beam modification of or by storage medium

369 4441, G11B 700

Patent

active

050848585

ABSTRACT:
A recorded-information reading apparatus includes a pickup device for reading recorded signals from a recording medium. The read signals are supplied to a signal processing device for the purpose of signal processing. The signal processing device includes a memory device for storing the read signals for respective signal tracks on the recording medium. The stored data are supplied to an arithmetic device for the purpose of arithmetic processing. The arithmetic device uses the stored data to perform arithmetic operations for cancelling crosstalk components which come from the adjacent tracks to the signal read from a track which is being traced and then for estimating a true signal recorded on the track which is being traced. In this manner, the recorded-information reading apparatus eliminates the crosstalk components by processing the signals recorded on the recording medium without the need to use any special detecting mechanism.

REFERENCES:
patent: 4489351 (1984-12-01), d'Alayer de Costemore d'Arc
patent: 4520401 (1985-05-01), Takahashi et al.
patent: 4831613 (1989-05-01), Kanda

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