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MAGNETIC RECORDING AND/OR REPRODUCING APPARATUS WITH CO-OPERATIVE LINKING OF TWO MOTORS
   
Document Number
US Patent 3839730
Issued Date
October 1, 1974
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Abstract
Magnetic recording and reproducing apparatus having a first direct current motor to drive the rotary magnetic heads and the capstan, and a second direct current motor to drive the take-up reel during recording and reproducing and the supply reel during rewind. Means are also provided to couple the second motor to the capstan during playback of the recorded tape. The phase of rotation of the first motor is controlled during the recording operation. At the same time, the speed of the second motor is controlled. During playback, the phase of the second motor is controlled.
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MAGNETIC RECORDING AND/OR REPRODUCING APPARATUS WITH CO-OPERATIVE LINKING OF TWO MOTORS - US Patent 3839730 Drawing
Drawing from US Patent 3839730
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Number of Claims:
14
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Owner
Sony Corporation (Tokyo,JA)
Published
October 1, 1974
Application Number
05/383,111
Filed
July 27, 1973
US Classification
360/71   360/84
Int'l Classification
G11B   15/28   (20060101)   G11B   15/18   (20060101)   G11B   5/52   (20060101)   G11B   15/29   (20060101)  
Priority Data
Jul 27, 1972 [JA] 47-88530[U]
USPTO Field of Search
179/1.2S   179/1.2T   179/1.2B   178/6.6P   360/71   360/73   360/84  
Related Patents
5517370 - Single motor driver for a helical scan recording/reproducing device - Owned by Sony Corporation (Tokyo,JP)

A rotary head tape recording and reproducing apparatus drives a rotary drum and a capstan by a common driving motor. In the reproducing mode, rotary heads generate a scanning position detection signal by picking up an address signal indicating the current scanning position from the recording track, and the driving motor is controlled so as to match the scanning position detection signal with a reference scanning position signal.

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Description
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