Telecommunications – Transmitter and receiver at separate stations
Utility Patent
1997-12-18
2001-01-02
Vo, Nguyen (Department: 2745)
Telecommunications
Transmitter and receiver at separate stations
C455S039000, C340S870030
Utility Patent
active
06169882
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates generally to radio display pagers, and more specifically to the management of received messages stored in a radio display pager.
2. Description of the Related Art
Japanese Laid-Open Patent Specification Hei-3-245621 discloses a radio display pager having a message memory in which received messages are successively stored in a memory to allow the user to read them at user's convenient time. In order to prevent old messages from being automatically removed from the memory due to user's carelessness, the memory is constantly monitored and its remaining capacity is determined. When the remaining capacity becomes lower than a predetermined value, the user is alerted to divert his attention to the received messages.
However, if the pager is left unattended, the memory will be overloaded and old messages will be automatically removed from the memory regardless of their urgency.
SUMMARY OF THE INVENTION
It is therefore an object of the present invention to provide a radio display pager which protects important or urgent messages by removing a normal message from a memory prior to removal of important messages when the memory is fill.
According to the present invention, a radio pager receives an addressed paging signal containing a message which may be accompanied by a predetermined parameter and stores the message into a memory as a normal message if the message is not accompanied by the predetermined parameter or stores it as an important message if it is accompanied by the predetermined parameter. If the memory is full, the pager removes an oldest normal message from the memory if the memory contains at least one normal message, and removes an oldest important message from the memory if the memory contains only the important messages.
According to a specific aspect, the pager of the present invention identifies any one of the stored normal and important messages as a confirmed message when such a message is read by a user, or monitors time lapse of each of the stored normal and important messages which are unread by a user, and identifies one of the messages as a confirmed message when the time lapse of the one stored message exceeds a predetermined value. The pager removes an oldest confirmed message from the memory if the memory contains at least one confirmed message, removes an oldest of the normal messages which are unread by the user if the memory contains at least one unread normal message, and removes an older one of important messages from the memory if the memory contains only the important messages which are accompanied by same predetermined parameters. The pager further removes an oldest unread important message from the memory if the memory contains only the important messages which are not accompanied by the same predetermined parameters.
REFERENCES:
patent: 4988991 (1991-01-01), Motegi
patent: 5140561 (1992-08-01), Miyashita et al.
patent: 5225826 (1993-07-01), De Luca et al.
patent: 5384565 (1995-01-01), Cannon
patent: 5418528 (1995-05-01), Hosak et al.
patent: 3-245621 (1991-11-01), None
patent: 5-30018 (1993-02-01), None
patent: 7-79464 (1995-03-01), None
patent: WO 95/06921 (1995-03-01), None
Aoki Makoto
NEC Corporation
Scully Scott Murphy & Presser
Vo Nguyen
LandOfFree
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