JPS54140810A - Agc system - Google Patents
Agc systemInfo
- Publication number
- JPS54140810A JPS54140810A JP4948178A JP4948178A JPS54140810A JP S54140810 A JPS54140810 A JP S54140810A JP 4948178 A JP4948178 A JP 4948178A JP 4948178 A JP4948178 A JP 4948178A JP S54140810 A JPS54140810 A JP S54140810A
- Authority
- JP
- Japan
- Prior art keywords
- temperature
- variation
- equivalent
- equalizer
- error
- 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
- H04B—TRANSMISSION
- H04B3/00—Line transmission systems
- H04B3/02—Details
- H04B3/04—Control of transmission; Equalising
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
Abstract
PURPOSE:To reduce the cost of a transmission line by compressing variation in temperature by using a distance equalizer and by making an error, against variation in line length, equivalent to the variation in temperature at one point by detecting the temperature of a cable. CONSTITUTION:A signal having passed through input terminal 1 and telegraph unit 2 is sent out to a line and then supplied to variable equalizer 9 of repeater 8, where a loss due to the line length is made euqivalent to make the variation in temperature equivalent coarsely. A signal including an error caused by making the temperature variation equivalent by using a distance equalizer is inputted to variable equalizer 9 of receiver 11, where variation due to the cable length is made equivalent to make the temperature variation equivalent coarsely in the same way as repeater 8 and also to make the error equivalent finally by using error equalizer 10. The error equalizer, on the other hand, is driven corresponding to the cable temperature detected by cable temperature detector 12.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4948178A JPS54140810A (en) | 1978-04-25 | 1978-04-25 | Agc system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4948178A JPS54140810A (en) | 1978-04-25 | 1978-04-25 | Agc system |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS54140810A true JPS54140810A (en) | 1979-11-01 |
Family
ID=12832342
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP4948178A Pending JPS54140810A (en) | 1978-04-25 | 1978-04-25 | Agc system |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS54140810A (en) |
-
1978
- 1978-04-25 JP JP4948178A patent/JPS54140810A/en active Pending
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