NL8003541A - Gecombineerd draadomroep- en videofoonstelsel. - Google Patents

Gecombineerd draadomroep- en videofoonstelsel. Download PDF

Info

Publication number: NL8003541A
Authority: NL; Netherlands
Prior art keywords: subscriber; frequency; bus lines; signals; microprocessor
Prior art date: 1979-06-19

Application number

NL8003541A

Other languages

English (en)

Dutch (nl)

Original Assignee

Communications Patents Ltd

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.)

1979-06-19

Filing date

1980-06-18

Publication date

1980-12-23

1980-06-18 Application filed by Communications Patents Ltd filed Critical Communications Patents Ltd

1980-12-23 Publication of NL8003541A publication Critical patent/NL8003541A/nl

Links

238000004891 communication Methods 0.000 claims description 10
230000005540 biological transmission Effects 0.000 claims description 9
230000008878 coupling Effects 0.000 claims description 6
238000010168 coupling process Methods 0.000 claims description 6
238000005859 coupling reaction Methods 0.000 claims description 6
230000000007 visual effect Effects 0.000 claims description 6
239000011159 matrix material Substances 0.000 claims description 4
235000014676 Phragmites communis Nutrition 0.000 claims description 3
230000008859 change Effects 0.000 claims description 3
238000001914 filtration Methods 0.000 claims 1
239000000969 carrier Substances 0.000 description 9
230000002457 bidirectional effect Effects 0.000 description 3
238000002955 isolation Methods 0.000 description 3
238000000034 method Methods 0.000 description 3
238000010586 diagram Methods 0.000 description 2
230000000694 effects Effects 0.000 description 2
238000005070 sampling Methods 0.000 description 2
230000001360 synchronised effect Effects 0.000 description 2
238000012546 transfer Methods 0.000 description 2
230000035559 beat frequency Effects 0.000 description 1
230000008901 benefit Effects 0.000 description 1
238000006243 chemical reaction Methods 0.000 description 1
239000004020 conductor Substances 0.000 description 1
239000013078 crystal Substances 0.000 description 1
238000011161 development Methods 0.000 description 1
230000002349 favourable effect Effects 0.000 description 1
238000009434 installation Methods 0.000 description 1
239000003607 modifier Substances 0.000 description 1
230000003287 optical effect Effects 0.000 description 1
230000008569 process Effects 0.000 description 1
238000012545 processing Methods 0.000 description 1
230000004044 response Effects 0.000 description 1
238000013519 translation Methods 0.000 description 1

Classifications

- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/16—Analogue secrecy systems; Analogue subscription systems
- H04N7/173—Analogue secrecy systems; Analogue subscription systems with two-way working, e.g. subscriber sending a programme selection signal
- H04N7/17345—Control of the passage of the selected programme
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04H—BROADCAST COMMUNICATION
- H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
- H04H20/65—Arrangements characterised by transmission systems for broadcast
- H04H20/76—Wired systems
- H04H20/77—Wired systems using carrier waves
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/14—Systems for two-way working
- H04N7/141—Systems for two-way working between two video terminals, e.g. videophone
- H04N7/147—Communication arrangements, e.g. identifying the communication as a video-communication, intermediate storage of the signals

Landscapes

Engineering & Computer Science (AREA)
Signal Processing (AREA)
Multimedia (AREA)
Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
Use Of Switch Circuits For Exchanges And Methods Of Control Of Multiplex Exchanges (AREA)
Small-Scale Networks (AREA)

NL8003541A 1979-06-19 1980-06-18 Gecombineerd draadomroep- en videofoonstelsel. NL8003541A (nl)

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
GB7921335		1979-06-19
GB7921335		1979-06-19

Publications (1)

Publication Number	Publication Date
NL8003541A true NL8003541A (nl)	1980-12-23

Family

ID=10505949

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
NL8003541A NL8003541A (nl)	1979-06-19	1980-06-18	Gecombineerd draadomroep- en videofoonstelsel.

Country Status (13)

Country	Link
US (1)	US4386365A (fr)
JP (1)	JPS5619243A (fr)
AU (1)	AU535400B2 (fr)
BE (1)	BE883882A (fr)
CA (1)	CA1147449A (fr)
CH (1)	CH651162A5 (fr)
DE (1)	DE3022359A1 (fr)
ES (1)	ES492437A0 (fr)
FR (1)	FR2459590A1 (fr)
IT (1)	IT1129012B (fr)
NL (1)	NL8003541A (fr)
SE (1)	SE448048B (fr)
ZA (1)	ZA803471B (fr)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
JPS5819087A (ja) *	1981-07-24	1983-02-03	Pioneer Electronic Corp	Ｃａｔｖシステムにおけるデ−タ
US4645872A (en) *	1982-04-01	1987-02-24	John Hopkins University	Videophone network system
FR2543385B1 (fr) *	1983-03-23	1985-07-12	Telecommunications Sa	Reseau cable de videocommunication
US4716585A (en)	1985-04-05	1987-12-29	Datapoint Corporation	Gain switched audio conferencing network
US4710917A (en) *	1985-04-08	1987-12-01	Datapoint Corporation	Video conferencing network
US4686698A (en) *	1985-04-08	1987-08-11	Datapoint Corporation	Workstation for interfacing with a video conferencing network
US4893326A (en) *	1987-05-04	1990-01-09	Video Telecom Corp.	Video-telephone communications system
US4849811A (en) *	1988-07-06	1989-07-18	Ben Kleinerman	Simultaneous audio and video transmission with restricted bandwidth
US5014267A (en) *	1989-04-06	1991-05-07	Datapoint Corporation	Video conferencing network
US5343240A (en) *	1991-11-04	1994-08-30	At&T Bell Laboratories	Bidirectional video telephony using shared channels on coaxial cable networks
GB2263041B (en) *	1991-12-30	1996-03-20	Nynex Corp	System for integrated distribution of switched voice and television on coaxial cable and with video signal transmission originating from subscriber locations
US5329308A (en) *	1992-07-29	1994-07-12	At&T Bell Laboratories	Bidirectional video telephony between cable television and switched telephone systems
US5278889A (en) *	1992-07-29	1994-01-11	At&T Bell Laboratories	Video telephony dialing
US5675373A (en) *	1994-08-19	1997-10-07	Marion County School Board	Interactive television service utilizing both unidirectional and omnidirectional broadcasting
WO2000051350A1 (fr)	1999-02-22	2000-08-31	Terk Technologies Corp.	Systeme de transmission video et procede utilisant les lignes telephoniques dans des ensembles d'habitation a plusieurs unites
DE102013210381B3 (de) *	2013-06-05	2014-05-28	Siemens Aktiengesellschaft	Signalübertragung von und zu einer Lokalspule einer Magnetresonanzanlage

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
GB1272594A (en) *	1968-08-09	1972-05-03	Communications Patents Ltd	Improvements in and relating to wired broadcasting systems
GB1306367A (fr) *	1969-06-06	1973-02-07
US3706996A (en) *	1970-04-14	1972-12-19	Theodore Hafner	Frequency adjustment for two-way video transmission
GB1314457A (en)	1970-11-12	1973-04-26	Communications Patents Ltd	Wired broadcasting systems
GB1414127A (en) *	1971-12-03	1975-11-19	Communications Patents Ltd	Wired broadcasting systems

1980
- 1980-06-02 US US06/155,076 patent/US4386365A/en not_active Expired - Lifetime
- 1980-06-04 AU AU59023/80A patent/AU535400B2/en not_active Ceased
- 1980-06-11 ZA ZA00803471A patent/ZA803471B/xx unknown
- 1980-06-11 SE SE8004343A patent/SE448048B/sv not_active IP Right Cessation
- 1980-06-13 ES ES492437A patent/ES492437A0/es active Granted
- 1980-06-14 DE DE19803022359 patent/DE3022359A1/de not_active Withdrawn
- 1980-06-17 IT IT48999/80A patent/IT1129012B/it active
- 1980-06-17 CA CA000354211A patent/CA1147449A/fr not_active Expired
- 1980-06-18 NL NL8003541A patent/NL8003541A/nl not_active Application Discontinuation
- 1980-06-18 CH CH4674/80A patent/CH651162A5/de not_active IP Right Cessation
- 1980-06-18 BE BE0/201080A patent/BE883882A/fr not_active IP Right Cessation
- 1980-06-19 FR FR8013617A patent/FR2459590A1/fr active Granted
- 1980-06-19 JP JP8222480A patent/JPS5619243A/ja active Pending

Also Published As

Publication number	Publication date
FR2459590A1 (fr)	1981-01-09
CA1147449A (fr)	1983-05-31
BE883882A (fr)	1980-10-16
IT8048999A0 (it)	1980-06-17
IT1129012B (it)	1986-06-04
SE8004343L (sv)	1980-12-20
JPS5619243A (en)	1981-02-23
ZA803471B (en)	1981-06-24
DE3022359A1 (de)	1981-01-29
ES8101830A1 (es)	1980-12-16
AU535400B2 (en)	1984-03-22
FR2459590B1 (fr)	1984-11-30
ES492437A0 (es)	1980-12-16
US4386365A (en)	1983-05-31
AU5902380A (en)	1981-01-08
SE448048B (sv)	1987-01-12
CH651162A5 (de)	1985-08-30

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Legal Events

Date	Code	Title	Description
1985-01-01	A85	Still pending on 85-01-01
1987-08-03	BV	The patent application has lapsed