JPS6444647A - Data transmission equipment - Google Patents
Data transmission equipmentInfo
- Publication number
- JPS6444647A JPS6444647A JP62200868A JP20086887A JPS6444647A JP S6444647 A JPS6444647 A JP S6444647A JP 62200868 A JP62200868 A JP 62200868A JP 20086887 A JP20086887 A JP 20086887A JP S6444647 A JPS6444647 A JP S6444647A
- Authority
- JP
- Japan
- Prior art keywords
- control signal
- demodulator
- reception
- state
- input
- 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 switch the operation from a reception-side demodulator to a transmission-side modulator without abnormally interrupting the reception operation by inhibiting input of a first control signal to the modulator and the demodulator at the time of input of a second control signal. CONSTITUTION:When a demodulator 2 is operated to set the reception state, a level detector 4 outputs a control signal of logical '0' to a data circuit 7 because detecting the signal sent through a communication line 3. Consequently, a gate is closed. Therefore, the operation state of the demodulator 2 is kept even if a transmission control signal (a) is inputted from a terminal equipment of an information processor in this state. That is, the operation state is switched by input of the transmission control signal (a) only when the demodulator 2 does not receive the signal from the communication line 2 and the level detector 4 outputs the control signal of logical '1' and as the result, abnormal interruption of the reception operation is prevented.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62200868A JPS6444647A (en) | 1987-08-13 | 1987-08-13 | Data transmission equipment |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62200868A JPS6444647A (en) | 1987-08-13 | 1987-08-13 | Data transmission equipment |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6444647A true JPS6444647A (en) | 1989-02-17 |
Family
ID=16431562
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62200868A Pending JPS6444647A (en) | 1987-08-13 | 1987-08-13 | Data transmission equipment |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6444647A (en) |
-
1987
- 1987-08-13 JP JP62200868A patent/JPS6444647A/en active Pending
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