Browse Prior Art Database

A NOVEL METHOD FOR PAGER CLOCK TIME ZONE ADJUSTMENT

IP.com Disclosure Number: IPCOM000008519D
Original Publication Date: 1997-Dec-01
Included in the Prior Art Database: 2002-Jun-19
Document File: 3 page(s) / 137K

Publishing Venue

Motorola

Related People

Garland Phillips: AUTHOR

Abstract

This paper describes a novel algorithm and user interface to accomplish clock time adjustment to correct for time zone differences. This algorithm removes the need to store the alphanumeric repre- sentations of the time zones in the clock, removes the burden of such knowledge from the user, and sim- plifies clock adjustment for time zone corrections.

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MOTOROLA Technical Developments

A NOVEL METHOD FOR PAGER CLOCK TIME ZONE ADJUSTMENT

by Garland Phillips

ABSTRACT

  This paper describes a novel algorithm and user interface to accomplish clock time adjustment to correct for time zone differences. This algorithm removes the need to store the alphanumeric repre- sentations of the time zones in the clock, removes the burden of such knowledge from the user, and sim- plifies clock adjustment for time zone corrections.

INTRODUCTION

  FLEXTM pagers will soon be capable of receiv- ing time and time zone as transmitted by the paging network. This information will be used to set the pager's displayed clock. Since the transmission area covered by a paging system may be very large (e.g. nationwide), it may cross time zones. A nationwide simulcast paging system, for example, will send a single time value everywhere in the system. Each pager which receives the time transmission should interpret the time received based on the pager's local time zone before setting the pager clock dis- play. Since the pager cannot know what time zone is "local," the user should typically set the time zone on the pager to the proper zone for its current location. This has an undesirable impact on the user and on the pager as the user must be aware of the name of the local time zone and the pager must store alphanumeric representations for all time

zones so that the user can manually select the cor- rect one. There are 3 1 time zones supported by the FLEXTM paging protocol.

  This paper describes a method and an algorithm which enables adjustment of a clock's time to the equivalent time in the next or previous time zone with a single key press.

  This is accomplished by storing time zone offsets in a table, determining the difference between current and next (or previous) time zone, and adjusting time to the equivalent next (or previous) time zone with each key press.

DESCRIPTION OF THE METHOD

  The clock or pager would have a new functional mode for adjusting the time to correct for time zone differences. When in this new mode, the user could use the up and down arrow buttons (or some other button) to move the time through settings equiva- lent to time zone changes. Pressing the button changes the time forward or backward by an amount equal to the difference in time to the next or previous time zone setting. The zone name need not be displayed, but the time is simply changed to the time in the next or previous time zone. This method can also be used to account for time differences due to daylight savings time

1: M"tor"!a. 1°C. 1997

186 December 1997

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MOTOROLA Technical Developments

4:OOPM 02/03/97 +

[Adjust Time Zone] +

Fig. 1 Example Pager Display for Time Zo...