Antitheft apparatus

• US 7,649,443 B2
• Filed: 03/02/2007
• Issued: 01/19/2010
• Est. Priority Date: 03/06/2006
• Status: Expired due to Fees

• Current Assignee: Fujitsu Ten Limited (DENSO Corporation)
• Original Assignee: Fujitsu Ten Limited (DENSO Corporation)
• Inventors: Matsubara, Manabu, Yoshimura, Minoru
• Primary Examiner(s): Bugg; George A
• Assistant Examiner(s): Fan; Hongmin
• Application Number:
  US11/713,030
• Publication Number:
  US 20070205878A1
• Time in Patent Office: 1,054 Days
• Field of Search: 340/426.1, 340/426.29, 340/429, 340/430, 340/426.14, 340/5.72, 340/545.1, 340/686.1, 340/568.8
• US Class Current: 340/426.29
• CPC Class Codes: B60R 25/1003 Alarm systems characterised by arm or disarm features
• CPC Class Codes: B60R 25/1004 Alarm systems characterised by the type of sensor, e.g. current sensing means using door lock sensors B60R25/1001
• CPC Class Codes: G08B 25/008 Alarm setting and unsetting, i.e. arming or disarming of the security system

Abstract

An antitheft apparatus includes a control section. When a status change from a closed state to an open state of a luggage door caused by regular means is detected in an arming state being ready to output an alarm, the control section shifts a status from the arming state to a disarmed state being not ready to output an alarm; when a status change from the open state to the closed state of the luggage door is detected in the disarmed state, the control section shifts the status from the disarmed state to the arming state after a predetermined length of preparatory period; and when an arming command to shift the status from the disarmed state to the arming state is given within the length of preparatory period, the control section shifts the status from the disarmed state to the arming state.

Claims

1. An antitheft apparatus comprising:

a control section that conducts control of outputting an alarm when a theft is detected by a theft detecting section for detecting a theft of an object,

wherein, when a status change from a closed state to an open state of a luggage door through a luggage door unlock action with a key or by a luggage door open command transmitted by a transmitter is detected in an arming state being ready to output an alarm, the control section shifts a status from the arming state to a disarmed state being not ready to output an alarm;

when a status change from an open state to a closed state of a luggage door is detected in the disarmed state, the control section shifts the status from the disarmed state to the arming state after a predetermined length of preparatory period; and

when an arming command to shift the status from the disarmed state to the arming state is given within the predetermined length of preparatory period, the control section shifts the status from the disarmed state to the arming state,

the theft detecting section comprises a door detecting section for detecting an open state and a closed state of at least one of the luggage door and passenger doors,

when a status change from a closed state to an open state of the at least one of the luggage door and the passenger doors is detected by the door detecting section within the predetermined length of preparatory period, the control section conducts control of outputting an alarm.

2. The antitheft apparatus of claim 1, wherein the theft detecting section comprises a vibration detecting section of which output is influenced by vibration of the object to be protected against theft,

wherein, when the arming state is set within the predetermined length of preparatory period based on the arming command, the control section invalidates a value detected by the vibration detecting section during duration of a period until an elapse of the predetermined length of preparatory period.

3. The antitheft apparatus of claim 1, wherein the control section conducts control of outputting an alarm which is different from a period during duration of the predetermined length of preparatory period to a period after an elapse of the predetermined length of preparatory period.

4. The antitheft apparatus of claim 1, wherein the predetermined length of preparatory period is changeable.

5. The antitheft apparatus of claim 4, wherein the theft detecting section comprises a vibration detecting section of which output is influenced by vibration of the object to be protected against theft,

wherein, in a case where the predetermined length of preparatory period has been modified to be shorter than a predetermined default period, the control section invalidates a value detected by the vibration detecting section during duration of a period until an elapse of the default period when the arming state is set within the predetermined length of preparatory period based on the arming command.

6. The antitheft apparatus of claim 4, wherein, in a case where the predetermined length of preparatory period has been modified to be shorter than a predetermined default period, the control section conducts control of outputting an alarm which is different from a period during duration of the predetermined length of preparatory period to a period after an elapse of the predetermined length of preparatory period.

7. An antitheft apparatus comprising:

a control section that conducts control of outputting an alarm when a theft is detected by a theft detecting section for detecting a theft; and

a connection detecting section that detects whether or not a vibration detecting section of which output is influenced by vibration of an object to be protected against theft is connected to the control section,

wherein, when a status change from a closed state to an open state of a door through an unlock action with a key or by an unlock command transmitted by a transmitter is detected in an arming state being ready to output an alarm, the control section shifts a status from the arming state to a disarmed state being not ready to output an alarm;

in a case where connection between the vibration detecting section and the control section is detected by the connection detecting section, the control section shifts the status from the disarmed state to the arming state after an elapse of a first length of preparatory period when a status change from an open state to a closed state of the door is detected in the disarmed state; and

in a case where no connection between the vibration detecting section and the control section is detected by the connection detecting section, the control section shifts the status from the disarmed state to the arming state after an elapse of a second length of preparatory period which is shorter than the first predetermined length of preparatory period when the status change from an open state to a closed state of the door is detected in the disarmed state.