ES2018742A6 - Sistema de interfono de television de dos cables. - Google Patents
Sistema de interfono de television de dos cables.Info
- Publication number
- ES2018742A6 ES2018742A6 ES8903926A ES8903926A ES2018742A6 ES 2018742 A6 ES2018742 A6 ES 2018742A6 ES 8903926 A ES8903926 A ES 8903926A ES 8903926 A ES8903926 A ES 8903926A ES 2018742 A6 ES2018742 A6 ES 2018742A6
- Authority
- ES
- Spain
- Prior art keywords
- television interphone
- branch device
- interphone system
- power supply
- call signal
- 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.)
- Expired - Lifetime
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/18—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast
- H04N7/183—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast for receiving images from a single remote source
- H04N7/186—Video door telephones
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M11/00—Telephonic communication systems specially adapted for combination with other electrical systems
- H04M11/02—Telephonic communication systems specially adapted for combination with other electrical systems with bell or annunciator systems
- H04M11/025—Door telephones
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Multimedia (AREA)
- Interconnected Communication Systems, Intercoms, And Interphones (AREA)
- Closed-Circuit Television Systems (AREA)
Abstract
SISTEMA DE INTERFONO DE TELEVISION DE DOS CABLES DISPUESTO PARA DISCRIMINAR, MEDIANTE UN DISCRIMINADOR DE TENSION DE LINEA INCORPORADO EN UN DISPOSITIVO MAESTRO, UNA VARIACION DE LA TENSION DE LINEA DEBIDA A UNA OPERACION DE LLAMADA EN EL LADO DE UN DISPOSITIVO DE BIFURCACION O DERIVACION, PARA ACTUAR UN CONTROLADOR DE TENSION EN EL DISPOSITIVO DE DERIVACION CON EL FIN DE DESPLAZAR EL SISTEMA DESDE EL ESTADO INACTIVO AL ESTADO DE FUNCIONAMIENTO, Y PARA ACTIVAR UN GENERADOR DE SEÑAL DE LLAMADA EN EL DISPOSITIVO DE DERIVACION PARA LA ACTUACION DE UN RECEPTOR DE SEÑAL DE LLAMADA EN EL DISPOSITIVO MAESTRO. EL SISTEMA ESTA HECHO DE ESTE MODO PARA DISPONER DE UN CIRCUITO DE SUMINISTRO DE ENERGIA EXCITADO PARA UN SUMINISTRO DE ENERGIA AL SISTEMA SOLO CUANDO SE REQUIERE PARA EFECTUAR LA OPERACION DE LLAMADA, HABLAR ENTRE AMBOS DISPOSITIVOS, ETC.
Applications Claiming Priority (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP63293347A JP2863855B2 (ja) | 1988-11-19 | 1988-11-19 | テレビインターホンシステム |
JP8950089A JPH02266744A (ja) | 1989-04-07 | 1989-04-07 | 2線式テレビインターホンシステム |
JP1088678A JP2783840B2 (ja) | 1989-04-09 | 1989-04-09 | 集合住宅用インターホン |
JP10519189A JP2655721B2 (ja) | 1989-04-25 | 1989-04-25 | 集合住宅用インターホン |
JP1229596A JPH078038B2 (ja) | 1989-09-04 | 1989-09-04 | テレビモニターシステム |
Publications (1)
Publication Number | Publication Date |
---|---|
ES2018742A6 true ES2018742A6 (es) | 1991-05-01 |
Family
ID=27525364
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ES8903926A Expired - Lifetime ES2018742A6 (es) | 1988-11-19 | 1989-11-17 | Sistema de interfono de television de dos cables. |
Country Status (5)
Country | Link |
---|---|
US (1) | US5032820A (es) |
DE (1) | DE3938339A1 (es) |
ES (1) | ES2018742A6 (es) |
GB (1) | GB2225195B (es) |
HK (1) | HK1007650A1 (es) |
Families Citing this family (28)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR940000250B1 (ko) * | 1989-12-28 | 1994-01-12 | 주식회사 금성사 | 도어폰의 신호 전송장치 |
JPH04207744A (ja) * | 1990-11-30 | 1992-07-29 | Nippon Intaafuoon Kk | インターフォーン |
US5815199A (en) * | 1991-01-31 | 1998-09-29 | Matsushita Electric Works, Ltd. | Interphone with television |
US5319394A (en) | 1991-02-11 | 1994-06-07 | Dukek Randy R | System for recording and modifying behavior of passenger in passenger vehicles |
DE4130101C1 (en) * | 1991-09-11 | 1993-02-04 | Ritto-Werk Loh Gmbh & Co Kg, 6342 Haiger, De | Door intercom with door-opening button - centrally generates call signal and feeds to individual internal intercoms using circuit including two series-connected Zener diodes and parallel decoupling diode |
US5638422A (en) * | 1992-01-15 | 1997-06-10 | General Instrument Corp. | Distributed antenna personal communication networks system |
US5345592A (en) * | 1992-04-08 | 1994-09-06 | Concept W Systems, Inc. | Signal transfer and power delivery system for a television camera station |
US5778303A (en) * | 1993-04-16 | 1998-07-07 | Matsushita Electric Industrial Co., Inc. | Multiplexed audio-video signal transmission system through pair-wire |
DE4400063A1 (de) * | 1994-01-04 | 1995-07-06 | Klaus Thomaier | Tür-Gegensprechanlage |
US5550754A (en) * | 1994-05-13 | 1996-08-27 | Videoptic Research | Teleconferencing camcorder |
DE4417048C2 (de) * | 1994-05-14 | 1996-03-28 | Fraba Technology And Trading G | Einrichtung zur Überwachung |
US5481478A (en) * | 1994-06-03 | 1996-01-02 | Palmieri; Herman D. | Broadcast system for a facility |
US5612994A (en) * | 1995-02-22 | 1997-03-18 | Chen; Jhy-Ping | Interphone system |
KR0164044B1 (ko) * | 1995-09-25 | 1999-01-15 | 김광호 | 방문자 확인 시스템 및 그 방법 |
DE19536912A1 (de) * | 1995-10-04 | 1997-04-10 | Deutsche Telekom Ag | Haustelekommunikationsanlage |
US5784446A (en) * | 1996-11-01 | 1998-07-21 | Cms Investors | Method and apparatus for installing telephone intercom-voice messaging apparatus at doorbell for dwelling |
US5923363A (en) * | 1997-03-06 | 1999-07-13 | Elbex Video Ltd. | Apparatus for powering a television interphone monitor via a signal transmission line |
US6256479B1 (en) * | 1997-12-19 | 2001-07-03 | Comptoir Francais De L'interphone | Wireless door intercom |
DE19817161C2 (de) * | 1998-04-17 | 2000-05-11 | Loh Kg Ritto Werk | Türsprechanlage mit einer Türstation und mehreren Wohnungssprechstellen |
GB2346027A (en) * | 1999-01-23 | 2000-07-26 | Tectonic International Limited | Security spy hole camera |
US6711385B1 (en) | 2000-07-06 | 2004-03-23 | Satius, Inc. | Coupler for wireless communications |
US20040263621A1 (en) * | 2001-09-14 | 2004-12-30 | Guo Chun Biao | Customer service counter/checkpoint registration system with video/image capturing, indexing, retrieving and black list matching function |
JP4088469B2 (ja) * | 2002-03-27 | 2008-05-21 | アイホン株式会社 | テレビインターホンシステム |
US20060078102A1 (en) * | 2004-10-12 | 2006-04-13 | Peter Giannakouros | Door answering system |
TW200743385A (en) | 2006-05-05 | 2007-11-16 | Amtran Technology Co Ltd | Method of audio-visual communication using television and television using the same |
DE102008056158B4 (de) | 2008-11-06 | 2011-05-05 | D'Onorio De Meo, Marco, Dr. | Verfahren zur Steuerung und Installation eines audiovisuellen Kommunikationsgerätes mit einfacher Handhabung, eine besondere Kamerasteuerungseinrichtung und Verwendung für die Unterstützung einer Person |
US20110242268A1 (en) * | 2010-03-31 | 2011-10-06 | Jin Kim | Television Appliance |
KR20160006587A (ko) * | 2014-07-09 | 2016-01-19 | 주식회사 케이티앤씨 | 홍채 인식을 이용한 도어록과 그 시스템 및 그에 사용되는 이동통신단말기와 네트워크 게이트웨이 및 사용자 인증 방법 |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1236776A (en) * | 1967-10-24 | 1971-06-23 | Matsushita Electric Ind Co Ltd | Television telephone system |
US3816662A (en) * | 1972-11-13 | 1974-06-11 | Gte Automatic Electric Lab Inc | Combination telephone and video communication system |
JPS5334930B2 (es) * | 1973-10-24 | 1978-09-25 | ||
US4427847A (en) * | 1981-08-10 | 1984-01-24 | Zenith Radio Corporation | Television/telephone system with annunciator and intercom feature |
US4645872A (en) * | 1982-04-01 | 1987-02-24 | John Hopkins University | Videophone network system |
AU6121886A (en) * | 1985-06-25 | 1987-01-30 | Matsushita Electric Works Ltd. | Monitoring device applying noctovision for a doorphone system |
US4932047A (en) * | 1985-11-07 | 1990-06-05 | Luma Telecom, Inc. | Conversational video phone |
JPS6320209A (ja) * | 1986-07-11 | 1988-01-27 | Mitsubishi Motors Corp | 油圧サスペンシヨン装置を備える車両の車高調整方法 |
US4893326A (en) * | 1987-05-04 | 1990-01-09 | Video Telecom Corp. | Video-telephone communications system |
JPH0198361A (ja) * | 1987-10-09 | 1989-04-17 | Sharp Corp | テレビドアホン |
-
1989
- 1989-11-10 GB GB8925471A patent/GB2225195B/en not_active Expired - Lifetime
- 1989-11-14 US US07/436,244 patent/US5032820A/en not_active Expired - Lifetime
- 1989-11-17 ES ES8903926A patent/ES2018742A6/es not_active Expired - Lifetime
- 1989-11-17 DE DE3938339A patent/DE3938339A1/de active Granted
-
1998
- 1998-06-25 HK HK98106646A patent/HK1007650A1/xx not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
GB2225195A (en) | 1990-05-23 |
GB2225195B (en) | 1993-08-11 |
DE3938339A1 (de) | 1990-05-23 |
DE3938339C2 (es) | 1991-05-02 |
US5032820A (en) | 1991-07-16 |
HK1007650A1 (en) | 1999-04-16 |
GB8925471D0 (en) | 1989-12-28 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
SA6 | Expiration date (snapshot 920101) |
Free format text: 2009-11-17 |
|
FD1A | Patent lapsed |
Effective date: 19981103 |