JPS57178468A - Character and voice transmission system - Google Patents
Character and voice transmission systemInfo
- Publication number
- JPS57178468A JPS57178468A JP6294481A JP6294481A JPS57178468A JP S57178468 A JPS57178468 A JP S57178468A JP 6294481 A JP6294481 A JP 6294481A JP 6294481 A JP6294481 A JP 6294481A JP S57178468 A JPS57178468 A JP S57178468A
- Authority
- JP
- Japan
- Prior art keywords
- voice
- circuit
- information
- control
- connecting circuit
- 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
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M11/00—Telephonic communication systems specially adapted for combination with other electrical systems
- H04M11/06—Simultaneous speech and data transmission, e.g. telegraphic transmission over the same conductors
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Time-Division Multiplex Systems (AREA)
Abstract
PURPOSE:To receive character information correctly by previously adding a prediction signal before either of voice information and the character information, and then adding a paper end signal after the transmission of the information. CONSTITUTION:A voice prediction signal 2 and a voice end signal 4 are inserted before and behind voice information 3. When character information 1 is transmitted firstly, a connecting circuit 7 is closed and a connecting circuit 8 is opened under the control of a control circuit 13. Then, when the voice prediction signal 2 is detected by a detecting circuit 6, the connecting circuit 7 is opened and the connecting circuit 8 is closed under the control of the control circuit 13. A detecting circuit 6 detects the voice end signal 4 to know that the voice information 3 ends, and the control circuit 13 closes the connecting circuit 7 and opens the connecting circuit 8. Thus, the prediction/end signal by voice is detected to exercise connection and disconnection control over receiving circuits 9 and 10, thereby preventing the malfunction of the receiving circuit 9 for a character signal and the generation of the unnecessary noise of a voice monitor speaker 12.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6294481A JPS57178468A (en) | 1981-04-24 | 1981-04-24 | Character and voice transmission system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6294481A JPS57178468A (en) | 1981-04-24 | 1981-04-24 | Character and voice transmission system |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS57178468A true JPS57178468A (en) | 1982-11-02 |
Family
ID=13214916
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP6294481A Pending JPS57178468A (en) | 1981-04-24 | 1981-04-24 | Character and voice transmission system |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS57178468A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61159858A (en) * | 1985-01-07 | 1986-07-19 | Hitachi Ltd | Telephone set switching system of remote supervisory and control ling equipment |
JPH04103231A (en) * | 1990-08-22 | 1992-04-06 | Sharp Corp | Signal changeover device |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5084103A (en) * | 1973-11-27 | 1975-07-07 |
-
1981
- 1981-04-24 JP JP6294481A patent/JPS57178468A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5084103A (en) * | 1973-11-27 | 1975-07-07 |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61159858A (en) * | 1985-01-07 | 1986-07-19 | Hitachi Ltd | Telephone set switching system of remote supervisory and control ling equipment |
JPH04103231A (en) * | 1990-08-22 | 1992-04-06 | Sharp Corp | Signal changeover device |
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