发明名称 |
AUTOMATIC TIME ADJUSTMENT CIRCUIT |
摘要 |
A microcomputer (2) normally drives the digital display (8) of a time generator (3) and produces a control signal to reset the time of the digital clock to the correct time at a certain hour of the day. A buffer amplifier (5) brings the signals from a radio receiver to a suitable level when it is powered for operating the time generator (3). A reference signal generator (4) continuously generates reference signals at the same frequency as the hourly time signals of a radio or TV station when it is powered to operated the time generator. A comparator (6) delivers signals at a high level when the amplified radio and reference signals have the same frequency. A time resetting unit (7) uses these high level signals to deliver a resetting signal to the microcomputer (2) for correcting the displayed time. |
申请公布号 |
KR930005908(B1) |
申请公布日期 |
1993.06.25 |
申请号 |
KR19900007355 |
申请日期 |
1990.05.22 |
申请人 |
SAMSUNG ELECTRONICS CO., LTD. |
发明人 |
LEE, KYU - AN |
分类号 |
G04G5/00;G04R20/14;G04R20/20 |
主分类号 |
G04G5/00 |
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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