G - Physics – 04 – G
Patent
G - Physics
04
G
363/17
G04G 99/00 (2010.01) G04G 21/04 (2010.01) G08B 3/10 (2006.01) G08B 5/22 (2006.01)
Patent
CA 1262385
ABSTRACT OF THE DISCLOSURE A method and apparatus for transmitting paging and absolute time information to, and receiving such information at, a remote portable electronic timepiece and pager unit during a short time slot assigned to the pager unit is disclosed. In the pager unit, an oscilla- tor is coupled to a timer which produces a time display. These functions are constantly powered. The timer per- iodically causes power to be supplied to a receiver and message decoding components of the pager unit during a short time slot in which transmitted data is to be re- ceived. The receiver detects and reconstitutes a trans- mitted signal. The transmitted signal is processed through a decoder which extracts paging and time update data. If the paging data includes the pager unit's ID number, the unit indicates that a page has been received. The time update data extracted from the transmitted signal is used to synchronize a timer in the pager unit. The timer provides an accurate time indication for the watch function. The same timer additionally determines when power is supplied to the pager unit's receiver and message decoder components so that they will be powered during the short time slot.
496881
A.t. & E. Laboratories Inc.
Cassan Maclean
LandOfFree
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