JPS5023714A - - Google Patents
Info
- Publication number
- JPS5023714A JPS5023714A JP49061968A JP6196874A JPS5023714A JP S5023714 A JPS5023714 A JP S5023714A JP 49061968 A JP49061968 A JP 49061968A JP 6196874 A JP6196874 A JP 6196874A JP S5023714 A JPS5023714 A JP S5023714A
- Authority
- JP
- Japan
- 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.)
- Pending
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q3/00—Selecting arrangements
- H04Q3/0008—Selecting arrangements using relay selectors in the switching stages
- H04Q3/0012—Selecting arrangements using relay selectors in the switching stages in which the relays are arranged in a matrix configuration
-
- 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)
- Computer Networks & Wireless Communication (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Closed-Circuit Television Systems (AREA)
- Interconnected Communication Systems, Intercoms, And Interphones (AREA)
- Sub-Exchange Stations And Push- Button Telephones (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT25174/73A IT992562B (it) | 1973-06-12 | 1973-06-12 | Disposizione circuitale videote leponica per centrali private |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5023714A true JPS5023714A (ja) | 1975-03-14 |
Family
ID=11215908
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP49061968A Pending JPS5023714A (ja) | 1973-06-12 | 1974-06-03 |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US3939306A (ja) |
| JP (1) | JPS5023714A (ja) |
| DE (1) | DE2427629A1 (ja) |
| FR (1) | FR2233772B1 (ja) |
| GB (1) | GB1432509A (ja) |
| IT (1) | IT992562B (ja) |
| SE (1) | SE387811B (ja) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4037250A (en) * | 1974-08-22 | 1977-07-19 | Mcgahan Everett G | Video switcher |
| DE3009105A1 (de) * | 1980-03-10 | 1981-09-24 | Siemens AG, 1000 Berlin und 8000 München | Schaltungsanordnung fuer ein fernsehtelefon, dessen bildschirm fuer eine farbige wiedergabe eingerichtet ist |
| DE3116422A1 (de) * | 1981-04-24 | 1982-11-11 | Siemens AG, 1000 Berlin und 8000 München | Digitales breitband-kommunikationssystem |
| US4360827A (en) * | 1981-06-02 | 1982-11-23 | Darome, Inc. | Method and means for interactive audio and video conferencing |
| DE3221683C2 (de) * | 1982-06-04 | 1989-02-02 | Siemens AG, 1000 Berlin und 8000 München | Nachrichtenvermittlungssystem, insbesondere Fernsprechvermittlungssystem, mit zentralen Speichereinrichtungen für digitale Sprachsignale |
| 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 |
| GB8527038D0 (en) * | 1985-11-02 | 1985-12-04 | Midlands Video Systems Ltd | Switching system |
| US5014267A (en) * | 1989-04-06 | 1991-05-07 | Datapoint Corporation | Video conferencing network |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2206654A (en) * | 1936-07-25 | 1940-07-02 | Rca Corp | Television system |
| GB1173918A (en) * | 1966-12-05 | 1969-12-10 | British Telecomm Res Ltd | Improvements in or relating to Video Telephone Systems |
| US3525808A (en) * | 1967-10-09 | 1970-08-25 | Tracor | Method and apparatus for synchronizing television signals |
| US3567861A (en) * | 1968-12-11 | 1971-03-02 | Nasa | Video/sync processor |
-
1973
- 1973-06-12 IT IT25174/73A patent/IT992562B/it active
-
1974
- 1974-03-26 FR FR7410308A patent/FR2233772B1/fr not_active Expired
- 1974-04-02 SE SE7404439A patent/SE387811B/xx unknown
- 1974-06-03 JP JP49061968A patent/JPS5023714A/ja active Pending
- 1974-06-07 DE DE19742427629 patent/DE2427629A1/de not_active Withdrawn
- 1974-06-10 GB GB2566474A patent/GB1432509A/en not_active Expired
- 1974-06-11 US US05/478,282 patent/US3939306A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| DE2427629A1 (de) | 1975-01-09 |
| SE387811B (sv) | 1976-09-13 |
| US3939306A (en) | 1976-02-17 |
| IT992562B (it) | 1975-09-30 |
| GB1432509A (en) | 1976-04-22 |
| FR2233772B1 (ja) | 1978-08-11 |
| FR2233772A1 (ja) | 1975-01-10 |
| SE7404439L (ja) | 1974-12-13 |