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METHOD AND DEVICE FOR CONTROLLING THE MOVEMENT OF A SCANNER PASSING DATA TRACKS OF A RECORD CARRIER
METHOD AND DEVICE FOR CONTROLLING THE MOVEMENT OF A SCANNER PASSING DATA TRACKS OF A RECORD CARRIER
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机译:用于控制记录载体的扫描仪通过数据轨迹的运动的方法和装置
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摘要
A system for controlling the number of data tracks crossed by the tracking head of a recording/playback device as the tracking head moves in a desired direction over a recording medium includes a counter having n output terminals. The counter is initially set to a count representative of the desired number of data tracks to be crossed as the tracking head moves in the desired direction. An further counter, also having n output terminals individually corresponding to the output terminals of the counter, is set to a predetermined count. Counting pulses are provided to the counter when the tracking head moves in the desired direction and to the further counter when the tracking head moves in a direction opposite from the desired direction. The output terminals are compared and a stop signal is generated when all terminals of both counters show that both counters are in the same state.
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