Radio-pager and method of radio-paging
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United States of America Patent
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Apr 7, 1998
Grant Date -
N/A
app pub date -
Mar 3, 1995
filing date -
Mar 4, 1994
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
The purpose of the invention is to provide a radio-pager that allows a user to set any desired call-sign therein and method of radio-paging that not only conducts person-to-person communication but easily realizes transmission from one person to a plurality (N) of persons such as simultaneous transmission of the same message or commercial massage to a number of pagers. The pager receives radio waves by an antenna, demodulates the received signal into digital data by a radio demodulator and transfers the data to a digital circuit that corrects the data for code transmission error caused by affection of fading. A CPU of the pager examines the correctly reproduced data and extracts a call-sign from the data stream. The CPU 25 reads a call-sign stored in a RAM and examines whether the extracted call-sign corrsponds to the stored call-sign. The pager drives an electronic speaker when the CPU detects that both call-signs are identiacal with each other.
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Cited Art Landscape
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