JPS5571381A - Common converter unit - Google Patents
Common converter unitInfo
- Publication number
- JPS5571381A JPS5571381A JP14415878A JP14415878A JPS5571381A JP S5571381 A JPS5571381 A JP S5571381A JP 14415878 A JP14415878 A JP 14415878A JP 14415878 A JP14415878 A JP 14415878A JP S5571381 A JPS5571381 A JP S5571381A
- Authority
- JP
- Japan
- Prior art keywords
- picture
- converter
- service
- call
- telephone set
- 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
Abstract
PURPOSE: To make it possible to utilize effectively the individual picture line provided in the picture service system, by providing a switch, which switches connection from a TV antenna to a converter, and a call detector as miscellaneous equipments.
CONSTITUTION: When the subscriber of subscriber terminal 11 requests picture service by telephone set 8, call detection circuit 53 drives relay driving circuit 55 to connect the relay contact to the converter 51 side if the output signal of service operation detection circuit 54 is a signal indicating that other subscribers connected to a reverting call converter do not receive service at all. Then, circuit 53 accepts the request and makes it possible that the control signal from telephone set 8 is transmitted to the picture center. Picture signals transmitted from the picture center through picture line 31 are applied to TV receiver 7 of subscriber terminal 11 from converter 51 and are displayed.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14415878A JPS5571381A (en) | 1978-11-24 | 1978-11-24 | Common converter unit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14415878A JPS5571381A (en) | 1978-11-24 | 1978-11-24 | Common converter unit |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5571381A true JPS5571381A (en) | 1980-05-29 |
Family
ID=15355540
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP14415878A Pending JPS5571381A (en) | 1978-11-24 | 1978-11-24 | Common converter unit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5571381A (en) |
-
1978
- 1978-11-24 JP JP14415878A patent/JPS5571381A/en active Pending
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