CA2224515A1 - Advanced method of indicating incoming threat level - Google Patents

Advanced method of indicating incoming threat level Download PDF

Info

Publication number
CA2224515A1
CA2224515A1 CA002224515A CA2224515A CA2224515A1 CA 2224515 A1 CA2224515 A1 CA 2224515A1 CA 002224515 A CA002224515 A CA 002224515A CA 2224515 A CA2224515 A CA 2224515A CA 2224515 A1 CA2224515 A1 CA 2224515A1
Authority
CA
Canada
Prior art keywords
signal
threat
pulse
pulses
output
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
Application number
CA002224515A
Other languages
English (en)
French (fr)
Inventor
Darrell E. Issa
Jerry W. Birchfield
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Directed Electronics Inc
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of CA2224515A1 publication Critical patent/CA2224515A1/en
Abandoned legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B13/00—Burglar, theft or intruder alarms
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B29/00—Checking or monitoring of signalling or alarm systems; Prevention or correction of operating errors, e.g. preventing unauthorised operation
    • G08B29/18—Prevention or correction of operating errors
    • G08B29/20—Calibration, including self-calibrating arrangements
    • G08B29/24—Self-calibration, e.g. compensating for environmental drift or ageing of components
    • G08B29/26—Self-calibration, e.g. compensating for environmental drift or ageing of components by updating and storing reference thresholds

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Burglar Alarm Systems (AREA)
  • Radar Systems Or Details Thereof (AREA)
  • Emergency Alarm Devices (AREA)
CA002224515A 1995-05-04 1995-06-21 Advanced method of indicating incoming threat level Abandoned CA2224515A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US43381995A 1995-05-04 1995-05-04
US08/433,819 1995-05-04

Publications (1)

Publication Number Publication Date
CA2224515A1 true CA2224515A1 (en) 1996-11-07

Family

ID=23721646

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002224515A Abandoned CA2224515A1 (en) 1995-05-04 1995-06-21 Advanced method of indicating incoming threat level

Country Status (6)

Country Link
EP (1) EP0824744A1 (de)
KR (1) KR19990008387A (de)
CN (1) CN1182495A (de)
AU (1) AU2944595A (de)
CA (1) CA2224515A1 (de)
WO (1) WO1996035194A1 (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102354423B (zh) * 2011-10-12 2013-06-19 上海电机学院 电子防盗装置

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4584569A (en) * 1981-11-23 1986-04-22 Lopez Michael J Motion sensitive security system
US4886417A (en) * 1988-12-06 1989-12-12 Sundstrand Corporation Fuel pump and radial-flow impeller therefor
US5084697A (en) * 1989-03-01 1992-01-28 Hwang Shih Ming Error-free control circuit for alarm detectors
JPH0489083A (ja) 1990-07-31 1992-03-23 Matsushita Electric Works Ltd トリマー付電気かみそり
US5532670A (en) 1992-05-22 1996-07-02 Directed Electronics, Inc. Method of indicating the threat level of an incoming shock to an electronically secured vehicle and apparatus therefore
US5712638A (en) 1992-09-16 1998-01-27 Directed Electronics, Inc. Multiple transmission channel group transmitter

Also Published As

Publication number Publication date
WO1996035194A1 (en) 1996-11-07
AU2944595A (en) 1996-11-21
CN1182495A (zh) 1998-05-20
KR19990008387A (ko) 1999-01-25
EP0824744A1 (de) 1998-02-25

Similar Documents

Publication Publication Date Title
US5646591A (en) Advanced method of indicating incoming threat level to an electronically secured vehicle and apparatus therefor
US5990786A (en) Advanced method of indicating incoming threat level to an electronically secured vehicle and apparatus therefor
US4099168A (en) Intrusion alarm and emergency illumination apparatus and method
US4785474A (en) Emergency signal warning system
US5278553A (en) Apparatus for warning of approaching emergency vehicle and method of warning motor vehicle operators of approaching emergency vehicles
US5934704A (en) Vehicle steering column control system
US5532670A (en) Method of indicating the threat level of an incoming shock to an electronically secured vehicle and apparatus therefore
US3828337A (en) Noise rejection circuitry
US5084697A (en) Error-free control circuit for alarm detectors
US6373381B2 (en) Vehicle security system and control method therefor
US5181010A (en) Automotive security system with discrimination between tampering and attack
US3986166A (en) Anti-tamper automobile alarm system utilizing plural reed type switches
US5621385A (en) Intrusion alarm and detection system
US5512874A (en) Security device
US5886622A (en) Alarm system with sensor signal evaluator
US5319351A (en) Stolen vehicle alarm system and method
US4096474A (en) Apparatus for detecting persons hidden in vehicles
CA2224515A1 (en) Advanced method of indicating incoming threat level
US20030227377A1 (en) Wireless security notification and control system
GB2294769A (en) Engine rotational speed detection
US4835518A (en) Active entry delay device
JP3459806B2 (ja) 盗難検知装置
JP2001018758A (ja) 盗難検知装置
RU2332720C2 (ru) Система сигнализации о пропаже объекта
WO1990010560A1 (en) Automotive burglar alarm system using direct current sensing

Legal Events

Date Code Title Description
EEER Examination request
FZDE Dead