Browse Prior Art Database

EMERGENCY PAGER RECOVERY PROTOCOL

IP.com Disclosure Number: IPCOM000008771D
Original Publication Date: 1998-Sep-01
Included in the Prior Art Database: 2002-Jul-11
Document File: 1 page(s) / 58K

Publishing Venue

Motorola

Related People

Pang Kang Ming: AUTHOR [+4]

Abstract

In conventional pagers, a "hard" reset will take place due to a number of factors such as removal of a primary cell for too long a time, insufficient power in a backup cell in the absence of the primary cell or corruption of information stored in the RAM. When a pager resets, unprotected data such settings or unlocked messages are usually lost.

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MOTOROLA Technical Developents

EMERGENCY PAGER RECOVERY PROTOCOL

by Pang Kang Ming, Chan Yi Huei, Kwok Lih and Tan Sew Liang

  In conventional pagers, a "hard" reset will take place due to a number of factors such as removal of a primary cell for too long a time, insufficient power in a backup cell in the absence of the primary cell or corruption of information stored in the RAM. When a pager resets, unprotected data such settings or unlocked messages are usually lost.

   This article describes an emergency pager recov- ery protocol for improving robustness of a pager. The protocol dictates that the pager will periodically log up all vital information for storage in a safe memory location. Logged-up data can therefore be retrieved instead of being discarded.

  Figure I is a flow diagram of operating steps for the protocol in which information and settings are periodically logged for storage. Frequency of data logging as such is pre-determined in the protocol. However, data logging should not be performed too frequently as power may be unnecessarily con- sumed. As "hard" resets do not happen very often, data logging can be done, for example, every fifteen minutes or so.

   Data logging and data retrieving upon a "hard" reset of the pager are easily applied using software. Following a "hard" reset, a user can easily retrieve data stored earlier. In most situations, data stored with this protocol is sufficient for users of pagers as it is unlikely that any typical user ex...