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ENHANCED STANDBY MODE FOR BATTERY SAVINGS

IP.com Disclosure Number: IPCOM000007503D
Original Publication Date: 1995-Nov-01
Included in the Prior Art Database: 2002-Apr-02
Document File: 2 page(s) / 89K

Publishing Venue

Motorola

Related People

Cheong Lai Choo: AUTHOR

Abstract

Battery life has been a concern in paging appli- cations whereby there is a constant effort to look into ways of producing pagers with an increased bat- tery life span. One of the ways is to put a pager in a standby mode aher a certain period of inactivity so as to conserve energy. In the standby mode, pager functions, such as the pager's display or the display's backlight, are turned off when not used. In turning off a pager hmction, any pager activity, for example, a key press or a page alert, brings the pager out of the standby mode and immediately to an active mode. With interactions between a user and the pager in the active mode, more energy is consumed by the pager.

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Technical Developments

ENHANCED STANDBY MODE FOR BATTERY SAVINGS

by Cheong Lai Choo

  Battery life has been a concern in paging appli- cations whereby there is a constant effort to look into ways of producing pagers with an increased bat- tery life span. One of the ways is to put a pager in a standby mode aher a certain period of inactivity so as to conserve energy. In the standby mode, pager functions, such as the pager's display or the display's backlight, are turned off when not used. In turning off a pager hmction, any pager activity, for example, a key press or a page alert, brings the pager out of the standby mode and immediately to an active mode. With interactions between a user and the pager in the active mode, more energy is consumed by the pager.

  However, there are times when, even with activ- ity, there is no necessity to activate the pager from the standby mode. Some scenarios for common pager usage when the standby mode is sufficient occurs when:

a) upon receiving a page alert, the user does not read the page alert immediately;
b) on the move, the user accidentally depresses a button on the pager; and
c) after reading messages or operating a pager function, the user puts the pager back into a holster.

  In the scenarios above, it is unnecessary to acti- vate the pager from the standby mode. Thus, oppor- tunities exist to further save battery energy by hav- ing an enhanced standby mode.

The enhanced standby mode calls for the pager to be put into the standby mode as long as it has

detected that the user is not interacting with the pager. One way is to determine whether the pager is inside or outside the holster. Hence, existing page...