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公开(公告)号：AU556797B2
公开(公告)日：1986-11-20
申请号：AU8870682
申请日：1982-09-24
Applicant: SONY CORP
Inventor： SONODA MASAKAZU , TERAJIMA TAKASHI , OZAWA MINORU
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公开(公告)号：FR2519817B1
公开(公告)日：1986-01-03
申请号：FR8216221
申请日：1982-09-27
Applicant: SONY CORP
Inventor： SONODA MASAKAZU , TERAJIMA TAKASHI , OZAWA MINORU
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公开(公告)号：FR2513830B1
公开(公告)日：1986-11-28
申请号：FR8216220
申请日：1982-09-27
Applicant: SONY CORP
Inventor： SONODA MADAKAZU , TERAJIMA TAKASHI , OZAWA MINORU
IPC: G11B15/18 , G11B15/20 , G11B15/467 , G11B15/48 , G11B15/54 , H02P3/08 , H02P7/06 , H02P23/00 , H02P5/16 , H04N5/782
Abstract: A control circuit for a DC capstan motor used for driving a tape having control signals thereon is adapted for accurate stopping of the tape during intermittent-motion operation. A frequency generator coupled to the motor generates a frequency signal whose frequency is proportional to the motor's speed. A position signal generating circuit generates a position value that increments by steps upon occurrences of the frequency signal. A clamp circuit clamps the position value to a clamping level upon detection of the control signals. A brake start signal generator provides a brake start pulse signal when the position value exceeds a predetermined threshold, and this brake start pulse signal is used to commence braking of the motor. In order to permit accurate stopping in both forward and reverse directions, the clamping circuit provides one clamping level when a forward mode is selected and another clamping level when a reverse mode is selected.
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公开(公告)号：DE3235446A1
公开(公告)日：1983-05-11
申请号：DE3235446
申请日：1982-09-24
Applicant: SONY CORP
Inventor： SONODA MASAKUZU , TERAJIMA TAKASHI , OZAWA MINORU
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公开(公告)号：FR2513830A1
公开(公告)日：1983-04-01
申请号：FR8216220
申请日：1982-09-27
Applicant: SONY CORP
Inventor： SONODA MADAKAZU , TERAJIMA TAKASHI , OZAWA MINORU
IPC: G11B15/18 , G11B15/20 , G11B15/467 , G11B15/48 , G11B15/54 , H02P3/08 , H02P7/06 , H02P23/00 , H02P5/16 , H04N5/782
Abstract: A control circuit for a DC capstan motor used for driving a tape having control signals thereon is adapted for accurate stopping of the tape during intermittent-motion operation. A frequency generator coupled to the motor generates a frequency signal whose frequency is proportional to the motor's speed. A position signal generating circuit generates a position value that increments by steps upon occurrences of the frequency signal. A clamp circuit clamps the position value to a clamping level upon detection of the control signals. A brake start signal generator provides a brake start pulse signal when the position value exceeds a predetermined threshold, and this brake start pulse signal is used to commence braking of the motor. In order to permit accurate stopping in both forward and reverse directions, the clamping circuit provides one clamping level when a forward mode is selected and another clamping level when a reverse mode is selected.
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Patent Agency Ranking
公开(公告)号：AU545136B2
公开(公告)日：1985-07-04
申请号：AU8861682
申请日：1982-09-22
Applicant: SONY CORP
Inventor： SONODA MADAKAZU , TERAJIMA TAKASHI , OZAWA MINORU
IPC: G11B15/18 , G11B15/20 , G11B15/467 , G11B15/48 , G11B15/54 , H02P3/08 , H02P7/06 , H02P23/00 , H02P5/16 , H02P7/28
Abstract: A control circuit for a DC capstan motor used for driving a tape having control signals thereon is adapted for accurate stopping of the tape during intermittent-motion operation. A frequency generator coupled to the motor generates a frequency signal whose frequency is proportional to the motor's speed. A position signal generating circuit generates a position value that increments by steps upon occurrences of the frequency signal. A clamp circuit clamps the position value to a clamping level upon detection of the control signals. A brake start signal generator provides a brake start pulse signal when the position value exceeds a predetermined threshold, and this brake start pulse signal is used to commence braking of the motor. In order to permit accurate stopping in both forward and reverse directions, the clamping circuit provides one clamping level when a forward mode is selected and another clamping level when a reverse mode is selected.
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公开(公告)号：GB2108717A
公开(公告)日：1983-05-18
申请号：GB8227310
申请日：1982-09-24
Applicant: SONY CORP
Inventor： SONODA MASAKAZU , TERAJIMA TAKASHI , OZAWA MINORU
Abstract: A control circuit for a DC capstan motor used for driving a tape having control signals thereon is adapted for accurate stopping of the tape during intermittent-motion operation. A frequency generator coupled to the motor generates a frequency signal whose frequency is proportional to the motor's speed. A position signal generating circuit generates a position value that increments by steps upon occurrences of the frequency signal. A clamp circuit clamps the position value to a clamping level upon detection of the control signals. A brake start signal generator provides a brake start pulse signal when the position value exceeds a predetermined threshold, and this brake start pulse signal is used to commence braking of the motor. In order to permit accurate stopping in both forward and reverse directions, the clamping circuit provides one clamping level when a forward mode is selected and another clamping level when a reverse mode is selected.
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公开(公告)号：AU8861682A
公开(公告)日：1983-03-31
申请号：AU8861682
申请日：1982-09-22
Applicant: SONY CORP
Inventor： SONODA MADAKAZU , TERAJIMA TAKASHI , OZAWA MINORU
IPC: G11B15/18 , G11B15/20 , G11B15/467 , G11B15/48 , G11B15/54 , H02P3/08 , H02P7/06 , H02P23/00 , H02P5/16 , H02P7/28
Abstract: A control circuit for a DC capstan motor used for driving a tape having control signals thereon is adapted for accurate stopping of the tape during intermittent-motion operation. A frequency generator coupled to the motor generates a frequency signal whose frequency is proportional to the motor's speed. A position signal generating circuit generates a position value that increments by steps upon occurrences of the frequency signal. A clamp circuit clamps the position value to a clamping level upon detection of the control signals. A brake start signal generator provides a brake start pulse signal when the position value exceeds a predetermined threshold, and this brake start pulse signal is used to commence braking of the motor. In order to permit accurate stopping in both forward and reverse directions, the clamping circuit provides one clamping level when a forward mode is selected and another clamping level when a reverse mode is selected.
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公开(公告)号：GB2108718B
公开(公告)日：1985-10-30
申请号：GB8227311
申请日：1982-09-24
Applicant: SONY CORP
Inventor： SONODA MASAKAZU , TERAJIMA TAKASHI , OZAWA MINORU
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公开(公告)号：GB2108717B
公开(公告)日：1985-07-10
申请号：GB8227310
申请日：1982-09-24
Applicant: SONY CORP
Inventor： SONODA MASAKAZU , TERAJIMA TAKASHI , OZAWA MINORU
Abstract: A control circuit for a DC capstan motor used for driving a tape having control signals thereon is adapted for accurate stopping of the tape during intermittent-motion operation. A frequency generator coupled to the motor generates a frequency signal whose frequency is proportional to the motor's speed. A position signal generating circuit generates a position value that increments by steps upon occurrences of the frequency signal. A clamp circuit clamps the position value to a clamping level upon detection of the control signals. A brake start signal generator provides a brake start pulse signal when the position value exceeds a predetermined threshold, and this brake start pulse signal is used to commence braking of the motor. In order to permit accurate stopping in both forward and reverse directions, the clamping circuit provides one clamping level when a forward mode is selected and another clamping level when a reverse mode is selected.
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