MY125066A - Alarm reporting apparatus - Google Patents
Alarm reporting apparatusInfo
- Publication number
- MY125066A MY125066A MYPI97000995A MYPI19970995A MY125066A MY 125066 A MY125066 A MY 125066A MY PI97000995 A MYPI97000995 A MY PI97000995A MY PI19970995 A MYPI19970995 A MY PI19970995A MY 125066 A MY125066 A MY 125066A
- Authority
- MY
- Malaysia
- Prior art keywords
- line
- current
- telephone
- voltage
- telephone lines
- Prior art date
Links
Classifications
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING SYSTEMS, e.g. PERSONAL CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B25/00—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems
Landscapes
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Alarm Systems (AREA)
- Telephonic Communication Services (AREA)
- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
Abstract
DETECTION OF DISCONNECTION OF A TELEPHONE LINE IN AN ALARM REPORTING APPARATUS IS CARRIED OUT WITHOUT ERRONEOUS JUDGEMENT AND AT A LOW COST. A LINE VOLTAGE MONITOR CIRCUIT (23) MONITORS A VOLTAGE BETWEEN TELEPHONE LINES WHEN THE TELEPHONE LINES (5) ARE OPEN.BECAUSE THE VOLTAGE IS MONITORED BY A VERY SMALL CURRENT, THERE IS THEREBY THE POSSIBILITY OF ERRONEOUS DETECTION OF ABNORMALITY DUE TO NOISE.THEREFORE, WHEN AN ABNORMALITY IS DETECTED, LINE CLOSING MEANS (13) CLOSES THE TELEPHONE LINES AND A LINE CURRENT MONITOR CIRCUIT (24) MONITORS A LINE CURRENT. BECAUSE THIS LINE CURRENT IS MONITORED BY A RELATIVELY LARGE CURRENT, THE POSSIBILITY OF ERRONEOUS JUDGEMENT DUE TO NOISE IS SMALL. WHEN ANY ABNOMALITY IS DETECTED DURING MONITORING BY THIS LINE CURRENT, THE TELEPHONE LINE IS JUDGED AS BEING DISCONNECTED, AND REPORTING MEANS (25) OUTPUTS A DISCONNECTION SIGNAL. SINCE THE NUMBER OF TIMES OF LINE CLOSURE DOES NOT BECOME GREAT IN THE PRESENT INVENTION, THE INCREASE IN THE COST OF A SYSTEM CAN BE RESTRICTED.(FIG.2)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24803896A JP3544797B2 (en) | 1996-09-19 | 1996-09-19 | Error reporting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| MY125066A true MY125066A (en) | 2006-07-31 |
Family
ID=17172279
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| MYPI97000995A MY125066A (en) | 1996-09-19 | 1997-03-10 | Alarm reporting apparatus |
Country Status (7)
| Country | Link |
|---|---|
| JP (1) | JP3544797B2 (en) |
| KR (1) | KR100668991B1 (en) |
| CN (1) | CN1119775C (en) |
| AU (1) | AU722707B2 (en) |
| MY (1) | MY125066A (en) |
| SG (1) | SG54475A1 (en) |
| TW (1) | TW322565B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4504241B2 (en) * | 2005-04-01 | 2010-07-14 | 株式会社ナカヨ通信機 | Automatic response detection method and automatic response detection device |
| JP6468064B2 (en) * | 2015-05-11 | 2019-02-13 | 株式会社リコー | COMMUNICATION CONTROL DEVICE, COMMUNICATION DEVICE, IMAGE FORMING DEVICE, COMMUNICATION CONTROL DEVICE CONTROL PROGRAM |
| US10382312B2 (en) * | 2016-03-02 | 2019-08-13 | Fisher-Rosemount Systems, Inc. | Detecting and locating process control communication line faults from a handheld maintenance tool |
| JP7527098B2 (en) * | 2019-03-29 | 2024-08-02 | 能美防災株式会社 | Fire Alarm System |
| CN110753163B (en) * | 2019-10-28 | 2021-05-18 | 上海市共进通信技术有限公司 | Protection device and method for VOIP functional module of optical network terminal |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5968096A (en) * | 1982-10-12 | 1984-04-17 | 東京綜合警備保障株式会社 | Disconnection monitor for subscriber's circuit |
| US4737776A (en) * | 1986-08-07 | 1988-04-12 | Wallace Wireman | Circuit for detecting cut telephone service line and transmitting signal over telephone trunk line |
| US4922529A (en) * | 1988-12-06 | 1990-05-01 | Kiel David J | Automatic hangup apparatus for restoring service to off-hook telephones |
| US4998271A (en) * | 1989-08-28 | 1991-03-05 | Venture Technologies, Inc. | Telephone accessory |
| JP2832196B2 (en) * | 1990-11-30 | 1998-12-02 | 群馬綜合ガードシステム 株式会社 | Telephone line disconnection detection device |
| JPH06223290A (en) * | 1993-01-26 | 1994-08-12 | Atsumi Denki Kk | Disconnection detection system and telephone equipment |
-
1996
- 1996-09-19 JP JP24803896A patent/JP3544797B2/en not_active Expired - Fee Related
-
1997
- 1997-03-06 SG SG1997000668A patent/SG54475A1/en unknown
- 1997-03-07 AU AU15139/97A patent/AU722707B2/en not_active Ceased
- 1997-03-08 TW TW086102847A patent/TW322565B/en not_active IP Right Cessation
- 1997-03-10 MY MYPI97000995A patent/MY125066A/en unknown
- 1997-04-02 CN CN97104584A patent/CN1119775C/en not_active Expired - Lifetime
- 1997-04-03 KR KR1019970012322A patent/KR100668991B1/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| CN1177160A (en) | 1998-03-25 |
| KR100668991B1 (en) | 2007-05-14 |
| AU722707B2 (en) | 2000-08-10 |
| KR19980023992A (en) | 1998-07-06 |
| TW322565B (en) | 1997-12-11 |
| CN1119775C (en) | 2003-08-27 |
| AU1513997A (en) | 1998-03-26 |
| SG54475A1 (en) | 1998-11-16 |
| JP3544797B2 (en) | 2004-07-21 |
| JPH1097693A (en) | 1998-04-14 |
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