JPS54129812A - Line monitor system - Google Patents
Line monitor systemInfo
- Publication number
- JPS54129812A JPS54129812A JP2514878A JP2514878A JPS54129812A JP S54129812 A JPS54129812 A JP S54129812A JP 2514878 A JP2514878 A JP 2514878A JP 2514878 A JP2514878 A JP 2514878A JP S54129812 A JPS54129812 A JP S54129812A
- Authority
- JP
- Japan
- Prior art keywords
- signal
- line
- monitor
- period
- analog signal
- 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 monitor the failure with a simple circuit without loosing essential functions of analog signal, by utilizing the signal having predetermined frequency, period and level included in the input signal.
CONSTITUTION: In the line monitor system monitoring the condition of line at the reception side of the system transmitting and receiving the analog signal such as broadcast signal in which no redundancy is permitted to monitor the condition of line, the specific signal representing a given information every period predetermined, for example, time cast and synthronous signal, included in the analog signal, is utilized for line monitor by picking up it at the reception side 12. The signal inputted via the digital delivery line 13 with this constitution is converted into original analog signal with the D/A converter 23 and is outputted to the output terminal 25, and it is fed to the selection section 26' to pick up the specific signal every period with the designation pulse from the designation pulse generating section 31 and this specific signal is detected at the detection section 27' whether it is within the predetermined specific level or not, to perform line monitor.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2514878A JPS54129812A (en) | 1978-03-06 | 1978-03-06 | Line monitor system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2514878A JPS54129812A (en) | 1978-03-06 | 1978-03-06 | Line monitor system |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS54129812A true JPS54129812A (en) | 1979-10-08 |
Family
ID=12157905
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2514878A Pending JPS54129812A (en) | 1978-03-06 | 1978-03-06 | Line monitor system |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS54129812A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7364166B2 (en) | 2003-01-24 | 2008-04-29 | Applied Engineered Surfaces, Inc. | Seal and retainer for a fluid connection |
-
1978
- 1978-03-06 JP JP2514878A patent/JPS54129812A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7364166B2 (en) | 2003-01-24 | 2008-04-29 | Applied Engineered Surfaces, Inc. | Seal and retainer for a fluid connection |
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