JPS52122016A - Malfunction prevention system of signal receiver - Google Patents
Malfunction prevention system of signal receiverInfo
- Publication number
- JPS52122016A JPS52122016A JP3845676A JP3845676A JPS52122016A JP S52122016 A JPS52122016 A JP S52122016A JP 3845676 A JP3845676 A JP 3845676A JP 3845676 A JP3845676 A JP 3845676A JP S52122016 A JPS52122016 A JP S52122016A
- Authority
- JP
- Japan
- Prior art keywords
- signal receiver
- prevention system
- malfunction prevention
- signal
- malfunction
- 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
- H04Q—SELECTING
- H04Q1/00—Details of selecting apparatus or arrangements
- H04Q1/18—Electrical details
- H04Q1/30—Signalling arrangements; Manipulation of signalling currents
- H04Q1/44—Signalling arrangements; Manipulation of signalling currents using alternate current
- H04Q1/444—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies
- H04Q1/45—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies using multi-frequency signalling
- H04Q1/453—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies using multi-frequency signalling in which m-out-of-n signalling frequencies are transmitted
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
Abstract
PURPOSE:To prevent the malfunction without adopting the signal in case of the presence of level difference more than the fixed between the maximum level value and the minimum level value of the signal acting within the constant time after detecting the presence of signal.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3845676A JPS52122016A (en) | 1976-04-06 | 1976-04-06 | Malfunction prevention system of signal receiver |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3845676A JPS52122016A (en) | 1976-04-06 | 1976-04-06 | Malfunction prevention system of signal receiver |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS52122016A true JPS52122016A (en) | 1977-10-13 |
Family
ID=12525756
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP3845676A Pending JPS52122016A (en) | 1976-04-06 | 1976-04-06 | Malfunction prevention system of signal receiver |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS52122016A (en) |
-
1976
- 1976-04-06 JP JP3845676A patent/JPS52122016A/en active Pending
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