JPS56109013A - Automatic equalizer - Google Patents
Automatic equalizerInfo
- Publication number
- JPS56109013A JPS56109013A JP1122280A JP1122280A JPS56109013A JP S56109013 A JPS56109013 A JP S56109013A JP 1122280 A JP1122280 A JP 1122280A JP 1122280 A JP1122280 A JP 1122280A JP S56109013 A JPS56109013 A JP S56109013A
- Authority
- JP
- Japan
- Prior art keywords
- optimum
- different
- output
- transmission system
- equalizer
- 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
- H04B3/14—Control of transmission; Equalising characterised by the equalising network used
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Networks Using Active Elements (AREA)
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
- Filters That Use Time-Delay Elements (AREA)
Abstract
PURPOSE:To obtain optimum equalizer to a transmission system in which signal speed and transmission code are different, by setting the relation between the output of an error amplifier and the gain of a variable gain amplifier to an optimum value. CONSTITUTION:Taking the gain of variable gain amplifiers 1 and 2 as A, B, the circuit from the input (a) to the output (e) has the frequency characteristics of A(1+jomegaB), where omega is an angular frequency. The gains A, B are respectively determined with control data k, j of ROM8, and the relation of A, B to the output (h) of the error amplifier 6 can be set to an optimum value by reading the memory content of the device 8 for the control data (i) as the address, allowing to optimize the circuit easily. Further, even to the transmission system where the optimum values of A, B to (h) are different, by enabling to read out the optimum values of different A, B through the change in the address signal (l), the optimum constant of equalizer can be obtained to the transmission system different from the signal speed and transmission code.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1122280A JPS56109013A (en) | 1980-02-01 | 1980-02-01 | Automatic equalizer |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1122280A JPS56109013A (en) | 1980-02-01 | 1980-02-01 | Automatic equalizer |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS56109013A true JPS56109013A (en) | 1981-08-29 |
Family
ID=11771927
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1122280A Pending JPS56109013A (en) | 1980-02-01 | 1980-02-01 | Automatic equalizer |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS56109013A (en) |
-
1980
- 1980-02-01 JP JP1122280A patent/JPS56109013A/en active Pending
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