发明名称 |
Timepiece for radio display pager synchronised to the local standard time. |
摘要 |
A radio display pager includes an antenna (4) and front end (5) and receives a series of frames from a paging station (1) synchronized to the seconds of the local standard time. Each frame contains a frame synchronizing signal and a frame position signal indicating the position of the frame within the series, each of the frames being synchronized with a local standard time of the paging station. A frame counter (9) increments a count value in synchronism with the reception of each frame synchronizing signal detected by a frame sync. detector (6) and produces an output when the count value reaches a predetermined value. The frame counter is reset to an initial value in response to the reception of a predetermined frame position signal which occurs at 1-minute intervals, as detected by a frame identifier decoder (7). A time-keeping circuit (15) counts locally generated clock pulses from a clock source (18) to display the time of day on a display unit (19). The time-keeping circuit is responsive to the output of the frame counter for calibrating the time of day to the local standard time. <IMAGE> |
申请公布号 |
EP0619685(A3) |
申请公布日期 |
1995.01.25 |
申请号 |
EP19940302259 |
申请日期 |
1994.03.29 |
申请人 |
NIPPON ELECTRIC CO |
发明人 |
KUSHITA MASAYUKI C O NEC CORPO |
分类号 |
H04L7/00;H04W84/02;H04W88/02 |
主分类号 |
H04L7/00 |
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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