Remote signaling device for a rolling code security system

• US 6,441,719 B1
• Filed: 12/30/1998
• Issued: 08/27/2002
• Est. Priority Date: 02/13/1998
• Status: Expired due to Fees

• Current Assignee: Tsui, Philip Y. W.
• Original Assignee: Tsui, Philip Y. W.
• Inventors: Tsui, Philip Y. W.
• Primary Examiner(s): Zimmerman, Brian
• Assistant Examiner(s): DaLencourt, Yves
• Application Number:
  US09/223,593
• Time in Patent Office: 1,336 Days
• Field of Search: 340/825.31, 340/825.34, 340/825.69, 340/825.73, 340/524, 340/825.72, 340/870.11, 340/5.1, 340/5.2, 340/5.8, 340/5.21, 341/173
• US Class Current: 340/5.21
• CPC Class Codes: E05F 15/77 using wireless control
• CPC Class Codes: G08C 17/02 using a radio link
• CPC Class Codes: G08C 2201/62 Rolling code

Abstract

A signaling device that receives coded signals from a transmitter. The signaling device includes a first circuit that receives a from the transmitter. The first code includes a first identification code and a first variable code. The signaling device further includes a memory that stores a second code. The second code includes a second identification code and a second variable code. The signaling device further includes a second circuit coupled to the first circuit and the memory. The second circuit generates an output signal if the first code matches the second code. The signaling device further includes an annunciator circuit coupled to the second circuit. The annunciator circuit provides a perceivable indicator if the second circuit generates the output signal.

Claims

1. A security system comprising:

a security device that wirelessly receives one or more signals from one or more respective transmitter units;

a signaling device located in wireless communication with the security device comprising;

a first circuit to wirelessly receive the first coded signal from said security device, said first coded signal including a first identification code and a first rolling code;

a memory that stores a second code, said second code including a second identification code and a second rolling code;

a second circuit coupled to said first circuit and said memory, said second circuit to compare said first code with said second code, said second circuit to generate an output signal if said first code matches said second code; and

an annunciator circuit coupled to said second circuit, said annunciator circuit to provide a perceivable indication in response to said output signal.

2. The signaling device of claim 1, wherein said second rolling code changes in response to said first code matching said second code.

3. The signaling device of claim 1, wherein said signaling device further comprises a third circuit coupled to said second circuit and said memory, said third circuit determining a next value from a predetermined sequence if said second circuit generates said output signal, and said third circuit storing said next value in said memory as said second rolling code.

4. The signaling device of claim 1, wherein said annunciator circuit further comprises an auto dialing telephone device, wherein providing said perceivable indicator comprises initiating a telephone call.

5. The signaling device of claim 1, wherein said signaling device further comprises a housing that encloses said first circuit, said memory and said second circuit, said housing being coupled to a tamper circuit that generates a tamper signal upon detection of a predetermined pressure value.

6. The signaling device of claim 5, wherein said signaling device further comprises said annunciator circuit coupled to said tamper circuit, said annunciator circuit to provide said perceivable indicator if said tamper circuit generates said tamper signal.

7. A security system method, comprising:

wirelessly transmitting, by one or more devices each including a sensor and a transmitter, a code in response to actuation of said sensor;

wirelessly receiving said code, by a security console;

comparing said code with a second code;

wirelessly transmitting a third code including a third identification code and a third rolling code if said code matches said second code;

wirelessly receiving, by a remote device, said third code;

comparing said third code with a fourth code including a fourth identification code and a fourth rolling code; and

providing an indication that a security violation has occurred if said third code matches said fourth code.

8. The method of claim 7, further comprising changing said second rolling code if said received first code matches said stored second code.

9. The method of claim 7, further comprising, determining a next value from a predetermined sequence for said second variable code if said received first code matches said stored second code, and storing said next value as said second rolling code.

10. The method of claim 7, wherein providing an indication that a security violation has occurred if said third code matches said fourth code comprises initiating a telephone call by an auto dialing telephone device.

11. The method of claim 7, further comprising generating a tamper signal upon detection of a predetermined pressure value in a housing that encloses said remote device.

12. The method of claim 11, further comprising providing an indication that a security violation has occurred by said remote device upon detection of said predetermined pressure value. value.

13. A security system comprising:

one or more devices each including a sensor and a transmitter, each transmitter to wirelessly transmit a code in response to actuation of said sensor;

a security console to receive said code, compare said code with a second code, and wirelessly transmit a third code including a third identification code and a third rolling code if said code matches said second code; and

a remote device to wirelessly receive said third code, compare said third code with a fourth code including a fourth identification code and a fourth rolling code, and to indicate that a security violation has occurred if said third code matches said fourth code.

14. The security system of claim 13, wherein said remote device changes said fourth rolling code in response to said third code matching said fourth code.

15. The security system of claim 13, wherein said remote device indicates that a security violation has occurred by enabling a siren.

16. The security system of claim 13, wherein said remote device indicates that a security violation has occurred by initiating a telephone call using an auto dialing telephone device.

17. The security system of claim 13, wherein each transmitter transmits a code including an identification code and a rolling code in response to actuation of said sensor, and said security console compares said code with a second code including a second identification code and a second rolling code.

18. The security system of claim 13, wherein the one or more devices are located in one or more zones.