Cassette tape player having circuit for detecting reverse rotation of take-up reel
作者： Gerald W. Tarpley , Karen M. Carlson , Kenneth C. Miller
DOI:
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摘要: A system for preventing improper tape feed in a cassette player uses pulse width measurements from the take-up reel output signal to sense normal or aberrant feeding conditions. The of is compared with predetermined range widths associated operation. variable as function rotational frequency and updated periodically reflect changes diameter plays. If falls outside range, it denotes an condition.
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