Security system using sequence signal

• US 7,667,595 B2
• Filed: 10/25/2006
• Issued: 02/23/2010
• Est. Priority Date: 05/28/2004
• Status: Expired due to Fees

• Current Assignee: Home Abroad Link Incorporated, Wako Engineering Co., Ltd.
• Original Assignee: Home Abroad Link Incorporated, Wako Engineering Co., Ltd.
• Inventors: Iibuchi, Shoji, Komiya, Keinosuke
• Primary Examiner(s): Holloway, III; Edwin C
• Application Number:
  US11/585,914
• Publication Number:
  US 20070035389A1
• Time in Patent Office: 1,217 Days
• Field of Search: 340/540, 340/516, 340/5.22, 340/5.27, 340/5.3, 340/539.22, 340/539.26, 341/22, 713/185, 307/10.4, 307/10.3
• US Class Current: 340/540
• CPC Class Codes: G08B 25/008 Alarm setting and unsetting, i.e. arming or disarming of the security system

Abstract

There is provided an inexpensive and easy-to-use security system whose setting can be changed freely by a user using a target to be managed by the security system and whose presence is not easily perceived by an intruder.

The security system comprises security targets and a management system which manages the security targets. The security target comprises a plurality of activation switches which generate activation signals and a plurality of partial signal generating sections that generate partial signals which can constitute a predetermined sequence signal upon receipt of activation signals generated from the activation switches, in accordance with predetermined relationships with these activation switches. The management system compares partial signals generated from the partial signal generating sections with predetermined sequence information and gives an alarm when they do not match each other. The relationships between the activation switches and the partial signal generating sections can be changed freely by a user of the security target.

Claims

1. A security system, comprising:

a security target; and

a management system configured to manage the security target and to store predetermined sequence information,

wherein the security target includes a sequence signal generator,

the sequence signal generator includes;

a plurality of activation switches, each activation switch generates activation signals, and

a plurality of partial signal generating sections, each partial signal generating section generates unique partial signals constituting a sequence signal, upon receipt of the activation signals, each activation switch corresponds to any of the partial signal generating sections according to corresponding relationships, when an activation signal is generated from an activation switch, the partial signal generating section corresponding to the activation switch according to the corresponding relationships receives the activation signal and generates a unique partial signal,

wherein the management system is configured to compare the sequence signal generated from the sequence signal generator with predetermined sequence information, which remains unchanged even when the corresponding relationships are changed, and to signal an alarm when the sequence signal generated and the predetermined sequence information do not match each other, and

wherein corresponding relationships between activation signals generated from the activation switches and partial signals generated from the partial signal generating sections are freely changeable, in the security target, by a user of the security target without informing the management system and without changing the predetermined sequence information, such a change in the corresponding relationships between activation signals generated from the activation switches and partial signals generated from the partial signal generating sections made by the user is known only to the user, and

only when the predetermined sequence information is changed, the management system is to inform the user of such change of the predetermined sequence information.

2. The security system of claim 1, wherein the partial signal generating sections generate any of the partial signals which can constitute the predetermined sequence signal in turn upon receipt of the activation signals generated from the activation switches, and the management system compares the generated partial signals with the sequence information stored in advance in the management system in turn and gives an alarm at the point when the management system determines that they do not match each other.

3. The security system of claim 1, wherein the sequence information stored in the management system in advance is not changed without notifying the user of the security target in advance.

4. The security system of claim 1, which gives an alarm when the partial signals generated from the partial signal generating sections of the security target in turn and the sequence information stored in advance in the management system do not match each other completely.

5. The security system of claim 1, which gives an alarm when the partial signals generated from the partial signal generating sections of the security target in turn and the sequence information stored in advance in the management system do not match each other partially.

6. The security system of claim 1, which gives an alarm when the sequence information stored in the management system in advance and the sequence signal generated by the security target do not match each other within a predetermined time.

7. The security system of claim 1, which gives an alarm when the sequence information stored in the management system in advance and the sequence signal generated by the security target do not match each other even by operating the switches for a predetermined number of times.

8. The security system of any of claim 1, wherein the activation switches are disposed in different places.