发明名称 |
VCR head cleaning system that automatically detects head clogging upon playback |
摘要 |
An ATF error signal is formed from a reproduction RF signal and supplied to an ATF discriminating unit 4 through an A/D converter by an ATF error arithmetic operation unit 1. The presence or absence of an ATF component is discriminated and supplied to a clog discrimination processing unit 5 by the ATF discriminating unit 4. The ATF discrimination processing unit 5 determines that a head clog has occurred in the case where the ATF component exists and the RF signal which is supplied from an RF discriminating unit 9 doesn't exist. A head cleaning is executed by controlling a loading motor 16 by a motor driver 14 on the basis of a cleaning process control 11 and making a head cleaning mechanism 17 operative.
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申请公布号 |
US5694263(A) |
申请公布日期 |
1997.12.02 |
申请号 |
US19960594274 |
申请日期 |
1996.01.30 |
申请人 |
SONY CORPORATION |
发明人 |
MIYAHARA, HIDEAKI;WATANABE, JUN |
分类号 |
G11B5/008;G11B5/41;G11B15/02;G11B15/087;(IPC1-7):G11B15/18 |
主分类号 |
G11B5/008 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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