Time-keeping radio display pager precisely calibrated to local s

Details Time-keeping radio display pager precisely calibrated to local s Time-keeping radio display pager precisely calibrated to local s

1994-03-29

1995-08-22

Roskoski, Bernard

Horology: time measuring systems or devices

Plural timepiece system or system device

With wireless synchronization

368 10, G04G 702

Patent

active

054446724

ABSTRACT:
A radio display pager receives a series of frames from a paging station 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 increments a count value in synchronism with the reception of each frame synchronizing signal 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. A time-keeping circuit counts locally generated clock pulses to display the time of day on a display unit. The time-keeping circuit is responsive to the output of the frame counter for calibrating the time of day to the local standard time.

REFERENCES:
patent: 3684964 (1972-08-01), Bright et al.
patent: 4440501 (1984-04-01), Schulz

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