JPS55149524A - Automatic equalizing system - Google Patents
Automatic equalizing systemInfo
- Publication number
- JPS55149524A JPS55149524A JP5781479A JP5781479A JPS55149524A JP S55149524 A JPS55149524 A JP S55149524A JP 5781479 A JP5781479 A JP 5781479A JP 5781479 A JP5781479 A JP 5781479A JP S55149524 A JPS55149524 A JP S55149524A
- Authority
- JP
- Japan
- Prior art keywords
- automatic equalizer
- circulating type
- delay time
- circuit
- circulating
- 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
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L25/00—Baseband systems
- H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
- H04L25/03—Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
- H04L25/03006—Arrangements for removing intersymbol interference
- H04L25/03012—Arrangements for removing intersymbol interference operating in the time domain
- H04L25/03114—Arrangements for removing intersymbol interference operating in the time domain non-adaptive, i.e. not adjustable, manually adjustable, or adjustable only during the reception of special signals
- H04L25/03133—Arrangements for removing intersymbol interference operating in the time domain non-adaptive, i.e. not adjustable, manually adjustable, or adjustable only during the reception of special signals with a non-recursive structure
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L25/00—Baseband systems
- H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
- H04L25/03—Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
- H04L25/03006—Arrangements for removing intersymbol interference
- H04L25/03012—Arrangements for removing intersymbol interference operating in the time domain
- H04L25/03114—Arrangements for removing intersymbol interference operating in the time domain non-adaptive, i.e. not adjustable, manually adjustable, or adjustable only during the reception of special signals
- H04L25/03146—Arrangements for removing intersymbol interference operating in the time domain non-adaptive, i.e. not adjustable, manually adjustable, or adjustable only during the reception of special signals with a recursive structure
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Filters That Use Time-Delay Elements (AREA)
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
Abstract
PURPOSE:To improve the stability of operation and performance of equalization, by combining the first automatic equalizer of non-circulating type and the second automatic equalizer possible for the switching between the auxiliary delay means and non-circulating type, circulating type. CONSTITUTION:The signal to the input terminal IN is first input to the automatic equalizer 100 of non-circulating type to cancel the ghost in the range of delay time 0-MT (where; T is the delay time between taps) at the transversal filter 101 consisting of the tapped delay element 111 having the tap number M, weight circuit 112, and addition circuit 113. The output signal is introduced to the second automatic equalizer 200 and picked up at the output terminal OUT via the auxiliary delay element 206, transversal filter 201 and operation circuit. The second automatic equalizer 200 can cope with the ghost in the range of the delay time (M+1)T-NT. The second automatic equalizer 200, after the operation stop of the tap gain correction and operation circuit 202, is in circulating constitution by changing over the switch 251 to the position b.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5781479A JPS55149524A (en) | 1979-05-11 | 1979-05-11 | Automatic equalizing system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5781479A JPS55149524A (en) | 1979-05-11 | 1979-05-11 | Automatic equalizing system |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS55149524A true JPS55149524A (en) | 1980-11-20 |
Family
ID=13066381
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP5781479A Pending JPS55149524A (en) | 1979-05-11 | 1979-05-11 | Automatic equalizing system |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55149524A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57190428A (en) * | 1981-05-19 | 1982-11-24 | Hitachi Ltd | Ghost removing device |
EP0472374A2 (en) * | 1990-08-17 | 1992-02-26 | Kabushiki Kaisha Toshiba | Transversal equalizer |
US5493585A (en) * | 1991-04-23 | 1996-02-20 | U.S. Philips Corporation | Semi-recursive adaptive equalizer |
-
1979
- 1979-05-11 JP JP5781479A patent/JPS55149524A/en active Pending
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57190428A (en) * | 1981-05-19 | 1982-11-24 | Hitachi Ltd | Ghost removing device |
EP0472374A2 (en) * | 1990-08-17 | 1992-02-26 | Kabushiki Kaisha Toshiba | Transversal equalizer |
US5493585A (en) * | 1991-04-23 | 1996-02-20 | U.S. Philips Corporation | Semi-recursive adaptive equalizer |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JPS55112049A (en) | Adaptive receiver | |
JPS55118247A (en) | Adaptive type signal | |
JPS55149524A (en) | Automatic equalizing system | |
US2448635A (en) | Echo reducing circuit for television receivers | |
JPS5660186A (en) | Chrominance signal processing circuit | |
JPS56107630A (en) | Delay time adjusting circuit | |
JPS5459810A (en) | Signal waveform transmission system | |
JPS56118127A (en) | Data transmission system and bus coupler | |
JPS52113659A (en) | High speed automatic equalizer | |
JPS55149522A (en) | Automatic equalizing system | |
JPS5654132A (en) | Automatic equalizer | |
JPS5654131A (en) | Automatic equalizer | |
JPS55104173A (en) | Compensation circuit for crystal fault | |
JPS54114159A (en) | Automatic gain control circuit | |
JPS5757023A (en) | Transversal equalizer | |
JPS57152719A (en) | Automatic equalizer | |
JPS5763964A (en) | Aural switch circuit | |
LAWRENCE et al. | On-line equalization of digital communication channels(Kalman filter for adaptive signal equalization in digital communication channels) | |
JPS5673973A (en) | Automatic equalizer for analog facsimile signal | |
JPS5252544A (en) | Variable attenuation equalizer | |
JPS5570125A (en) | Automatic equalizer | |
JPS5613836A (en) | Multiple propagation distortion eliminating device | |
JPS55149523A (en) | Automatic equalizer | |
JPS57145446A (en) | Automatic equalizer | |
JPS56128038A (en) | Two-way amplifier of two-wire system |