JPS5531366A - Disengaged line signal detection system - Google Patents
Disengaged line signal detection systemInfo
- Publication number
- JPS5531366A JPS5531366A JP10513578A JP10513578A JPS5531366A JP S5531366 A JPS5531366 A JP S5531366A JP 10513578 A JP10513578 A JP 10513578A JP 10513578 A JP10513578 A JP 10513578A JP S5531366 A JPS5531366 A JP S5531366A
- Authority
- JP
- Japan
- Prior art keywords
- line signal
- disengaged
- disengaged line
- signal
- 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.)
- Granted
Links
Landscapes
- Mobile Radio Communication Systems (AREA)
Abstract
PURPOSE: To prevent wrong detection of the disengaged line signal and to catch the disengaged line signal swiftly and correctly by detecting the disengaged line signal by use of the outputs of the voice zone element detection circuit out of the control signal and the control signal element detection circuit, together with the output of the signal demodulation circuit.
CONSTITUTION: In case the disengaged line signal has not been detected, an output exists in the control signal element circuit 40, while an output does not exist in the voice zone element detection circuit 39 out of the control signal, and when the disengaged line singal has appeared in the output of the signal demodulation circuit 38, it is judged that the disengaged line signal has been detected. And after the disengaged line signal has been detected, in case an output does not exist in the circuit 40, or an output exists in the circuit 39, it is judged that the disengaged line signal has not been detected yet, and the operation is shifted to detection of the disengaged line signal. Thus, it is possible to prevent wrong detection of the disengaged line signal, and to catch the disengaged line signal swiftly and correctly.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10513578A JPS5531366A (en) | 1978-08-29 | 1978-08-29 | Disengaged line signal detection system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10513578A JPS5531366A (en) | 1978-08-29 | 1978-08-29 | Disengaged line signal detection system |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5531366A true JPS5531366A (en) | 1980-03-05 |
JPS5726019B2 JPS5726019B2 (en) | 1982-06-02 |
Family
ID=14399299
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP10513578A Granted JPS5531366A (en) | 1978-08-29 | 1978-08-29 | Disengaged line signal detection system |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5531366A (en) |
-
1978
- 1978-08-29 JP JP10513578A patent/JPS5531366A/en active Granted
Also Published As
Publication number | Publication date |
---|---|
JPS5726019B2 (en) | 1982-06-02 |
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