Device of controlling head-drum angle and method therefor

Details Device of controlling head-drum angle and method therefor Device of controlling head-drum angle and method therefor

1992-03-12

1994-10-04

Look, Edward K.

Dynamic magnetic information storage or retrieval

Automatic control of a recorder mechanism

Controlling the head

360 7314, 360 84, 360 7715, G11B 5588, H04N 5783

Patent

active

053531736

ABSTRACT:
A video cassette recorder, in which the head-drum angle is controlled by a control voltage which varies according to the tape speed detected from the frequency or a capstan motor applied by a frequency detecting portion at a first stage. Then, based upon the Fuzzy theory, the video head of head-drum can be maintained at a constant angle with the pitch (P) of a video tape independent of the tape speed by reproducing the control voltage by means of a detected membership function detected according to the gain difference (G) coming from a gain detecting portion.

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Cox, Earl, Fuzzy Fundamentals, IEEE Spectrum, Oct. 1992, pp. 58-61.
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