Dynamic information storage or retrieval – Information location or remote operator actuated control – Selective addressing of storage medium
Patent
1993-08-09
1995-03-28
Pascal, Robert J.
Dynamic information storage or retrieval
Information location or remote operator actuated control
Selective addressing of storage medium
369 4428, G11B 1722
Patent
active
054023998
ABSTRACT:
In an optical card reproducing apparatus, the data of a front ID portion is read, and whether a track address can be identified is determined. If the track address cannot be identified, a flag is reset, and the data of a data portion is read. If the track address can be identified, whether the identified track address coincides with a target track address is determined. If they do not coincide, the operation is ended. If they coincide, the flag is set, and the data of the data portion is read. After the data read from the data portion is stored in a buffer memory, whether the flag is set is determined. If the flag is set, data in the buffer memory is output as the data of the target track. If the flag is reset, the data of a rear ID portion is read, and whether the track address is identified is determined. If the track address cannot be identified, the buffer memory is cleared, and the operation is ended. If the track address can be identified, whether the identified track address coincides with the target track address is determined. If they do not coincide, the buffer memory is cleared, and the operation is ended. If they coincide, data in the buffer memory is output as the data of the target track.
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Oshiba Mitsuo
Rokutan Takao
Sakurada Takefumi
Sugaya Takumi
Tani Naoaki
Dinh Tan
Olympus Optical Co,. Ltd.
Pascal Robert J.
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