Method for identifying operation modes of an antitheft system

• US 4,809,316 A
• Filed: 09/11/1987
• Issued: 02/28/1989
• Est. Priority Date: 07/09/1985
• Status: Expired due to Term

• Current Assignee: Alpine Electronics Incorporated (Alps Alpine Co., Ltd.)
• Original Assignee: Alpine Electronics Incorporated (Alps Alpine Co., Ltd.)
• Inventors: Namekawa, Makoto
• Primary Examiner(s): Lev, Robert
• Application Number:
  US07/096,790
• Time in Patent Office: 536 Days
• Field of Search: 379/58, 379/56, 379/63, 379/44, 379/59, 340/825.31, 340/825.35, 340/539, 340/531, 340/63, 455/54, 455/56, 235/385, 235/375
• US Class Current: 455/404.1
• CPC Class Codes: B60R 25/30 Detection related to theft or to other events relevant to anti-theft systems

Abstract

The identification of the status of an anti-theft system is made by using a motor vehicle telephone system and a system for preventing vehicles from thefts. First, a time is set in order to turn the telephone system to the power-on state. A time period for which the power-on state continues is also set. The telephone system is turned on at the pre-set power-on time, and the status of one or more operating modes of the anti-theft system is checked only when an incoming call arrives during the power-on state and when a predetermined ID code has been entered. With this arrangement, identification can be available from a place away from a vehicle to determine whether the vehicle is at the normal state or not. In addition, the telephone system may be set to the power-on state only at the predetermined time only for a pre-determined period of time. This additional feature reduces power consumption of batteries.

Claims

1. A method for remotely identifying the status of an anti-theft system applicable to a motor vehicle having a telephone system and an anti-theft system, comprising:

providing the anti-theft system with a controller unit for monitoring a plurality of sensors detecting a plurality of anti-theft conditions of the vehicle;

connecting the controller unit of the anti-theft system to the telephone system and providing the controller unit with means for pre-setting a time for turning on the telephone system to a power-on state and a time period during which the power-on state continues;

initially placing the telephone system in a power-off state when a notifiee for the vehicle leaves the vehicle unattended to be protected by the anti-theft system;

turning on the telephone system with the controller unit to receive an incoming call from a notifiee at a remote location after the pre-set power-on time and during the pre-set time period; and

operating the controller unit when receiving the incoming call during the power-on state of the telephone system to respond to any one of a plurality of inquiry codes selectively transmitted on the incoming call by issuing a status signal to the telephone system identifying the status of any one of the plurality of anti-theft conditions of the vehicle corresponding to the inquiry code, wherein the status signal is transmitted by the telephone system to the notifiee at the remote location.

2. A method for remotely identifying the status of an anti-theft system according to claim 1, further comprising:

providing the controller unit with storage means for storing a pre-determined ID code, and comparing means for comparing the stored ID code with an ID code transmitted through the incoming call to the telephone system; and

operating the controller unit to receive an ID code transmitted through the incoming call by the notifiee in order to determine whether the notifiee is an authorized caller before issuing the status signal identifying the anti-theft condition of the vehicle.

3. A method for remotely identifying the status of an anti-theft system according to claim 1, wherein the status signal is provided to the notifiee in a spoken language.