Dynamic magnetic information storage or retrieval – Automatic control of a recorder mechanism – Controlling the record
Patent
1991-11-01
1993-10-26
Psitos, Aristotelis
Dynamic magnetic information storage or retrieval
Automatic control of a recorder mechanism
Controlling the record
360 7305, G11B 1546
Patent
active
052571475
ABSTRACT:
A method for setting tracking data of variable speed modes in a video tape recorder having an automatic tracking circuit includes the steps of detecting current tracking data at a normal speed reproducing mode after performing an automatic tracking, and then determining a tracking data variation value by subtracting initial tracking data at a normal speed reproducing mode from the current tracking data, and setting a data variation function depending on the tracking data variation value, corresponding to an other speed reproducing mode, and detecting initial tracking data at said other speed reproducing mode and adding the data variation function to the initial tracking at said other speed reproducing mode, to transmit current tracking data at said other speed reproducing mode to a servo motor. Thus, for example even twice the normal speed reproducing mode or at a slow speed reproducing mode, the tracking is determined as related to the automatic tracking at the normal speed reproducing mode, and tracking error can be decreased.
REFERENCES:
patent: 4902946 (1990-02-01), Tomitaka
Bushnell Robert E.
Psitos Aristotelis
Samsung Electronics Co,. Ltd.
Sheladia Varsha V.
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