Radio selective call receiver such as a pager and method of disp

Details Radio selective call receiver such as a pager and method of disp Radio selective call receiver such as a pager and method of disp

1997-06-25

1999-11-30

Bost, Dwayne D.

Telecommunications

Transmitter and receiver at separate stations

Having measuring, testing, or monitoring of system or part

455 384, 455572, H04B 1700

Patent

active

059958081

ABSTRACT:
A radio selective call receiver such as a pager that displays a remaining time for retaining data stored in a memory of the receiver on its LCD after removing the battery, providing a user with an easy and simple way of protecting for data. A count section of a decoder circuit counts the time period elapsing from removal of the battery to insertion of a replacement battery detected by a battery removal/insertion detection circuit using a reference clock. An operation section reads a message retentive time from a ID-ROM indicating the time allowed for retaining the message preset in the RAM after removing the battery and outputs an operation result obtained by subtracting the elapsed time from the message retentive time. A CPU receives output information of the operation section 6c and edits the output information conforming to the remaining time for retaining the message so as to be displayed on the LCD 8.

REFERENCES:
patent: 4940975 (1990-07-01), Ide et al.
patent: 5438695 (1995-08-01), Morimura et al.
patent: 5524021 (1996-06-01), Scotton et al.
patent: 5551077 (1996-08-01), Oda
patent: 5608612 (1995-09-01), Hokao
patent: 5858570 (1999-01-01), Akagi

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