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JPH0787010A Expired / Lapsed JP ⏱️ 0.0 years remaining

Battery saving circuit of mobile device for mobile phone system

Assignee: Fujitsu Ltd
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Filing: 1993-09-17
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Granted: —
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Expires: 2013-09-17
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Abstract

Abstract Translated from Japanese (57)【要約】 【目的】 本発明は携帯電話システム用移動機のバッテ リセービング回路に関し、よりバッテリ消費を低減する ことを目的とする。 【構成】 電源回路15は電源オフを指示する信号を受 け、電源電圧の供給を停止する。常時動作するタイマ部 14は、起動後、設定された停止時間、電源オフを指示 する信号を電源回路15に供給する。サービス圏判別部 17、高速移動判別部18は、電源回路15がオンとな った時点で制御信号の監視を開始し、制御信号を捕捉で きなかった場合サービス圏外と判断し、制御信号を捕捉 できた場合サービス圏内と判断し、前回までいたサービ ス圏外へ移動し、かつ、制御信号の指定部分の受信回数 が基準値未満のとき高速移動中と判断する。タイマ制御 部19は、サービス圏外にいるか高速移動中であるとき に制御信号の周期より大幅に長い時間を停止時間として 設定してタイマ部14を起動する。 (57) [Abstract] [Object] The present invention relates to a battery saving circuit of a mobile device for a mobile phone system, and an object thereof is to further reduce battery consumption. [Structure] The power supply circuit 15 receives a signal instructing to turn off the power supply and stops supply of the power supply voltage. After being activated, the constantly operating timer unit 14 supplies the power supply circuit 15 with a signal for instructing power-off for a set stop time. The service area determination unit 17 and the high speed movement determination unit 18 start monitoring the control signal when the power supply circuit 15 is turned on. If the control signal cannot be captured, the service area determination unit 17 and the high speed movement determination unit 18 determine that the service signal is out of service and can capture the control signal. If it is determined that the service area is within the service area, the vehicle is moved out of the service area up to the previous time, and when the number of receptions of the designated portion of the control signal is less than the reference value, it is determined that the vehicle is moving at high speed. The timer control unit 19 activates the timer unit 14 by setting a time significantly longer than the cycle of the control signal as the stop time when the vehicle is out of the service area or moving at a high speed.

Inventors

  • 👤 Osamu Yoshida
  • 👤 修 美田

Bibliographic Details

Application Number —
Jurisdiction JP
Data Source google_patents
Last Synchronized 2026-11-08 23:54
CPC Classifications
Y; Y02; Y02D; Y02D30/00; Y02D30/70

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