Dynamic magnetic information storage or retrieval – Record editing
Patent
1984-10-05
1987-12-01
Cardillo, Raymond F.
Dynamic magnetic information storage or retrieval
Record editing
360 101, 360 77, 358342, H04N 5781
Patent
active
047108320
ABSTRACT:
A tracking system for a rotary magnetic recording medium includes a magnetic head for sensing signals on a plurality of tracks formed on the recording medium such that a beginning and an end of recording align with each other, a head feeding unit for transporting the magnetic head to a position where a desired one of the tracks is located, and a control unit for controlling the head feeding unit to effect tracking. The control unit includes an operational unit for sampling a signal sensed by the head in response to a rotation of the recording medium at a plurality of sampling points, and adds the sampled values with predetermined weights. Based on a result of the weighted addition, the control unit performs a tracking control.
REFERENCES:
patent: 4148083 (1979-04-01), Watanabe
patent: 4402070 (1983-08-01), Sugiyama et al.
patent: 4443823 (1984-04-01), Sakamoto
patent: 4470078 (1984-09-01), Hirata et al.
patent: 4470079 (1984-09-01), Tsuruta
patent: 4486796 (1984-12-01), Sakamoto
patent: 4520410 (1985-05-01), Sekiguchi et al.
patent: 4525750 (1985-06-01), Hamalainen
Cardillo Raymond F.
Fuji Photo Film Co. , Ltd.
Young Wayne R.
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