Dynamic information storage or retrieval – Control structure on storage medium sensed by other than...
Patent
1985-09-16
1987-06-16
Cardillo, Raymond F.
Dynamic information storage or retrieval
Control structure on storage medium sensed by other than...
G11B 2724
Patent
active
046740724
ABSTRACT:
An index pulse generator detects an index mark applied to a record medium. A signal detected in this manner is passed through a low pass filter to provide a reference signal, and the detected signal is compared against the reference signal to deliver an index pulse.
REFERENCES:
patent: 4339727 (1982-07-01), Kaye et al.
IBM Technical Disclosure Bulletin, vol. 18, No. 7, Dec. 1975, Voltage Source Direction Detector with Digital Output.
Cardillo Raymond F.
Olympus Optical Co,. Ltd.
Tomassini James E.
Weinstein Louis
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