DK601688A - Differentialdetektor til akustisk tryk - Google Patents

Differentialdetektor til akustisk tryk

Info

Publication number: DK601688A
Authority: DK; Denmark
Prior art keywords: acoustic pressure; differential detector; threshold value; microphone; regulation
Prior art date: 1987-10-30

Application number

DK601688A

Other languages

English (en)

Other versions

DK169647B1 (da

DK601688D0 (da

Inventor

Francois Philippe

Original Assignee

Francois Philippe

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.)

1987-10-30

Filing date

1988-10-28

Publication date

1989-05-01

Family has litigation

First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=9356331&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=DK601688(A) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.

1988-10-28 Application filed by Francois Philippe filed Critical Francois Philippe

1988-10-28 Publication of DK601688D0 publication Critical patent/DK601688D0/da

1989-05-01 Publication of DK601688A publication Critical patent/DK601688A/da

1995-01-02 Application granted granted Critical

1995-01-02 Publication of DK169647B1 publication Critical patent/DK169647B1/da

Classifications

- 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
- G08B29/185—Signal analysis techniques for reducing or preventing false alarms or for enhancing the reliability of the system
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B13/00—Burglar, theft or intruder alarms
- G08B13/16—Actuation by interference with mechanical vibrations in air or other fluid
- G08B13/1654—Actuation by interference with mechanical vibrations in air or other fluid using passive vibration detection systems
- G08B13/1681—Actuation by interference with mechanical vibrations in air or other fluid using passive vibration detection systems using infrasonic detecting means, e.g. a microphone operating below the audible frequency range

Landscapes

Physics & Mathematics (AREA)
General Physics & Mathematics (AREA)
Engineering & Computer Science (AREA)
Computer Security & Cryptography (AREA)
Measuring Fluid Pressure (AREA)
Burglar Alarm Systems (AREA)
Emergency Alarm Devices (AREA)

DK601688A 1987-10-30 1988-10-28 Differentialdetektor til akustisk tryk DK169647B1 (da)

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
FR8715052A FR2622719A1 (fr)	1987-10-30	1987-10-30	Detecteur differentiel de pression acoustique
FR8715052		1987-10-30

Publications (3)

Publication Number	Publication Date
DK601688D0 DK601688D0 (da)	1988-10-28
DK601688A true DK601688A (da)	1989-05-01
DK169647B1 DK169647B1 (da)	1995-01-02

Family

ID=9356331

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
DK601688A DK169647B1 (da)	1987-10-30	1988-10-28	Differentialdetektor til akustisk tryk

Country Status (8)

Country	Link
EP (1)	EP0317459B1 (da)
AT (1)	ATE75063T1 (da)
CA (1)	CA1311292C (da)
DE (1)	DE3870163D1 (da)
DK (1)	DK169647B1 (da)
FR (1)	FR2622719A1 (da)
GR (1)	GR3005179T3 (da)
NO (1)	NO174487C (da)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
GB2263771A (en) *	1992-01-04	1993-08-04	Sound International Ltd	Intruder alarms
DE69413332T2 (de) *	1993-07-19	1999-02-11	Ping West Hills Calif. Lee	Eine Kombination eines Kraftfahrzeugs mit einem Alarmsystem

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US3569923A (en) *	1967-10-30	1971-03-09	Us Navy	Adaptive acoustic detector apparatus
FR2122343B1 (da) *	1971-01-21	1975-02-21	Ato Inc
GB1605185A (en) *	1976-11-09	1983-03-02	Plessey Co Ltd	Sensing arrangements
US4442514A (en) *	1981-11-17	1984-04-10	The United States Of America As Represented By The Secretary Of The Air Force	Security system signal processor
US4479113A (en) *	1982-01-20	1984-10-23	The United States Of America As Represented By The United States Department Of Energy	Compensated intruder-detection systems
FR2523339A1 (fr) *	1982-03-12	1983-09-16	Guglielmetti Vg Electro	Dispositif de detection a capteur volumetrique a infra-sons et procede de detection par infra-sons
DE3300906A1 (de) *	1983-01-13	1984-07-19	Mauro 2054 Geesthacht Marmotti	Verfahren und vorrichtung zur raum- und gebaeudeueberwachung

1987
- 1987-10-30 FR FR8715052A patent/FR2622719A1/fr not_active Withdrawn
1988
- 1988-10-17 AT AT88440086T patent/ATE75063T1/de not_active IP Right Cessation
- 1988-10-17 EP EP88440086A patent/EP0317459B1/fr not_active Expired - Lifetime
- 1988-10-17 DE DE8888440086T patent/DE3870163D1/de not_active Expired - Lifetime
- 1988-10-27 CA CA000581520A patent/CA1311292C/fr not_active Expired - Lifetime
- 1988-10-28 NO NO884823A patent/NO174487C/no unknown
- 1988-10-28 DK DK601688A patent/DK169647B1/da not_active IP Right Cessation
1992
- 1992-07-15 GR GR920401525T patent/GR3005179T3/el unknown

Also Published As

Publication number	Publication date
DK169647B1 (da)	1995-01-02
EP0317459A2 (fr)	1989-05-24
NO174487B (no)	1994-01-31
DE3870163D1 (de)	1992-05-21
NO884823D0 (no)	1988-10-28
EP0317459A3 (en)	1989-08-09
ATE75063T1 (de)	1992-05-15
DK601688D0 (da)	1988-10-28
NO174487C (no)	1994-05-11
EP0317459B1 (fr)	1992-04-15
CA1311292C (fr)	1992-12-08
FR2622719A1 (fr)	1989-05-05
GR3005179T3 (da)	1993-05-24
NO884823L (no)	1989-05-02

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Legal Events

Date	Code	Title	Description
1995-01-02	B1	Patent granted (law 1993)
2000-08-14	PBP	Patent lapsed