Tape speed controller
专利汇可以提供Tape speed controller专利检索，专利查询，专利分析的服务。并且PURPOSE: To attain high speed music selection by a rotary head system digital audio tape recorder by running a tape in a high constant speed to read additional information such as information for a PCM signal or channel selection on the tape.
CONSTITUTION: Assuming an oscillation frequency of a voltage controlled oscillator VCO at normal reproduction as f
1 , a control voltage of the VCO as V
1 , and as f
1 , V
1 respectively even at high speed tape running, then the scanning relative speed between the head and tape is unchanged and a PCM data and a control code are reproduced by a data segmentation circuit 7 by using an output of the VCO10 as a clock. At the high speed tape running, since the number of revolutions of a cylinder is changed over so as to obtain a tape/head relative speed at normal reproduction in the running of a prescribed tape speed, the control voltage of the VCO10 is, e.g., V
2 . When a difference 19 exists, the result is subject to sample and hold. Then depending whether the tape runs in the forward or reverse direction at the normal reproduction and high speed tape running, switches 12, 13 are thrown to the position of addition 17 or subtraction 18 to drive (15) a reel shaft motor.
COPYRIGHT: (C)1987,JPO&Japio，下面是Tape speed controller专利的具体信息内容。
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