SE8004343L - Kombinerat kabelteve- och bildtelefonsystem - Google Patents

Kombinerat kabelteve- och bildtelefonsystem

Info

Publication number: SE8004343L
Authority: SE; Sweden
Prior art keywords: frequency; bus; signals; bars; phone
Prior art date: 1979-06-19

Application number

SE8004343A

Other languages

English (en)

Other versions

SE448048B (sv

Inventor

E J Gargini

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

1980-06-11

Publication date

1980-12-20

1980-06-11 Application filed by Communications Patents Ltd filed Critical Communications Patents Ltd

1980-12-20 Publication of SE8004343L publication Critical patent/SE8004343L/sv

1987-01-12 Publication of SE448048B publication Critical patent/SE448048B/sv

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)

SE8004343A 1979-06-19 1980-06-11 Kombinerat kabelteve- och bildtelefonsystem SE448048B (sv)

Applications Claiming Priority (1)

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

Publications (2)

Publication Number	Publication Date
SE8004343L true SE8004343L (sv)	1980-12-20
SE448048B SE448048B (sv)	1987-01-12

Family

ID=10505949

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
SE8004343A SE448048B (sv)	1979-06-19	1980-06-11	Kombinerat kabelteve- och bildtelefonsystem

Country Status (13)

Country	Link
US (1)	US4386365A (sv)
JP (1)	JPS5619243A (sv)
AU (1)	AU535400B2 (sv)
BE (1)	BE883882A (sv)
CA (1)	CA1147449A (sv)
CH (1)	CH651162A5 (sv)
DE (1)	DE3022359A1 (sv)
ES (1)	ES8101830A1 (sv)
FR (1)	FR2459590A1 (sv)
IT (1)	IT1129012B (sv)
NL (1)	NL8003541A (sv)
SE (1)	SE448048B (sv)
ZA (1)	ZA803471B (sv)

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
US4686698A (en) *	1985-04-08	1987-08-11	Datapoint Corporation	Workstation for interfacing with a video conferencing network
US4710917A (en) *	1985-04-08	1987-12-01	Datapoint Corporation	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 (en)	1999-02-22	2000-08-31	Terk Technologies Corp.	Video transmission system and method utilizing phone lines in multiple unit dwellings
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 (sv) *	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 SE SE8004343A patent/SE448048B/sv not_active IP Right Cessation
- 1980-06-11 ZA ZA00803471A patent/ZA803471B/xx unknown
- 1980-06-13 ES ES492437A patent/ES8101830A1/es not_active Expired
- 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/en not_active Expired
- 1980-06-18 CH CH4674/80A patent/CH651162A5/de not_active IP Right Cessation
- 1980-06-18 NL NL8003541A patent/NL8003541A/nl not_active Application Discontinuation
- 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
CH651162A5 (de)	1985-08-30
ES492437A0 (es)	1980-12-16
IT8048999A0 (it)	1980-06-17
IT1129012B (it)	1986-06-04
FR2459590B1 (sv)	1984-11-30
JPS5619243A (en)	1981-02-23
AU535400B2 (en)	1984-03-22
NL8003541A (nl)	1980-12-23
ZA803471B (en)	1981-06-24
ES8101830A1 (es)	1980-12-16
US4386365A (en)	1983-05-31
AU5902380A (en)	1981-01-08
SE448048B (sv)	1987-01-12
FR2459590A1 (fr)	1981-01-09
DE3022359A1 (de)	1981-01-29
BE883882A (fr)	1980-10-16
CA1147449A (en)	1983-05-31

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Legal Events

Date	Code	Title	Description
1995-01-31	NUG	Patent has lapsed	Ref document number: 8004343-3 Effective date: 19920109 Format of ref document f/p: F

Date

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1995-01-31

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