JPS6478548A - Video signal transmission system - Google Patents
Video signal transmission systemInfo
- Publication number
- JPS6478548A JPS6478548A JP62235768A JP23576887A JPS6478548A JP S6478548 A JPS6478548 A JP S6478548A JP 62235768 A JP62235768 A JP 62235768A JP 23576887 A JP23576887 A JP 23576887A JP S6478548 A JPS6478548 A JP S6478548A
- Authority
- JP
- Japan
- Prior art keywords
- channel
- video
- transmission
- control
- terminal
- 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.)
- Pending
Links
Landscapes
- Small-Scale Networks (AREA)
Abstract
PURPOSE:To practically attain large transmission capacity by constituting the titled system so that the control part of a control terminal allows a switching circuit to switch a video signal to a vacant transmission channel with respect to a transmission request from a video terminal. CONSTITUTION:A control terminal 11 executes polling respectively to networks L1, L2 of video terminals, and, for instance, a transmission request from a video terminal N3 in the L1 to a video terminal N5 is transmitted to the multiplex separation circuit DMUX1 of the line switching part 13 through a control channel. The circuit DMX1 takes out a signal from the control channel by means of multiplex separation, transmits the signal to a control part 12, while signals in other transmission channels are transmitted to a multiplex circuit MUX1 as they are. The part 12, in receiving a transmission request, searches a vacant transmission channel in the L1, allocates the thus found channel to the video terminal N5, and at the same time, finds a vacant channel in the L2, and transmits a video signal to the N5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62235768A JPS6478548A (en) | 1987-09-19 | 1987-09-19 | Video signal transmission system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62235768A JPS6478548A (en) | 1987-09-19 | 1987-09-19 | Video signal transmission system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6478548A true JPS6478548A (en) | 1989-03-24 |
Family
ID=16990950
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62235768A Pending JPS6478548A (en) | 1987-09-19 | 1987-09-19 | Video signal transmission system |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6478548A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1993013615A1 (en) * | 1991-12-20 | 1993-07-08 | Fujitsu Limited | Cross-connection of communication network |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57125547A (en) * | 1981-01-29 | 1982-08-04 | Toshiba Corp | Dataway extender |
-
1987
- 1987-09-19 JP JP62235768A patent/JPS6478548A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57125547A (en) * | 1981-01-29 | 1982-08-04 | Toshiba Corp | Dataway extender |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1993013615A1 (en) * | 1991-12-20 | 1993-07-08 | Fujitsu Limited | Cross-connection of communication network |
| US5416768A (en) * | 1991-12-20 | 1995-05-16 | Fujitsu Limited | Interconnecting communications networks |
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