Erroneous track jump restoration apparatus for optical record di

Details Erroneous track jump restoration apparatus for optical record di Erroneous track jump restoration apparatus for optical record di

1987-09-21

1989-08-22

Sikes, William L.

Dynamic information storage or retrieval

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

Mechanism control by the control signal

369 44, 369100, 369111, 369120, 369128, 360 78, 346 76L, G11B 509, G11B 2108, G01D 1510

Patent

active

048602728

ABSTRACT:
An apparatus for reproducing data stored on a disc in a plurality of tracks connected in a continuous spiral or separated in concentric tracks. The apparatus includes a device for rotating the disc, an optical pickup device aligned with one of the tracks for reading the data from the track, the pickup being subject to jump movement of alignment with the track into alignment with another track in response to movement of the device, a buffer memory device temporarily storing successive portions of the data read from the track for delaying reproduction of the data for a predetermined time after the reading of the data, a track jump detection device for detecting movement of the pickup device into alignment with anothr track and interrupting temporary storage of the data read from the other track by the buffer memory device, a drive device for moving the pickup device with respect to the disc for reading data, and for changing the alignment of the pickup device from the other track to the one track in response to the track jump detection device, and an output device for substantially uninterrupted reproduction of the temporarily stored data.

REFERENCES:
patent: 4611314 (1986-09-01), Ogata et al.
patent: 4648085 (1987-03-01), Shimonou
patent: 4675857 (1987-06-01), Schylander
patent: 4677606 (1987-06-01), Ogata et al.
patent: 4759006 (1988-07-01), Koishi et al.
patent: 4763205 (1988-08-01), Okano
patent: 4796247 (1989-01-01), Vogelsang
patent: 4807206 (1989-02-01), Moriya et al.

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