JPS54149550A - Automatic equalizer - Google Patents
Automatic equalizerInfo
- Publication number
- JPS54149550A JPS54149550A JP5850778A JP5850778A JPS54149550A JP S54149550 A JPS54149550 A JP S54149550A JP 5850778 A JP5850778 A JP 5850778A JP 5850778 A JP5850778 A JP 5850778A JP S54149550 A JPS54149550 A JP S54149550A
- Authority
- JP
- Japan
- Prior art keywords
- correlator
- signal
- transversal filter
- input signal
- weight
- 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
Landscapes
- Filters That Use Time-Delay Elements (AREA)
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
Abstract
PURPOSE: To reduce the unneeded component of a correlation output by allowing a correlator to operate on a component only which is more than the constant level of the input signal of a transversal filter.
CONSTITUTION: Correlator 14 correlates input signal X(t) to the transversal filter with difference signal E(t) between its output signal Y(t) and reference signal R(t) and on the basis of the correlation output D(t), weight-coefficient control circuit 15 controls the weight coefficient of each weight circuit in the transversal filter so that difference signal E(t) will be the smallest. Correlator 14 consists of sample holding circuit 24 composed of switches 22 operated by shift registers 21 in sequence and capacitor memories 23, multipliers 25, and tapped delay elements 26 such as CCDs. At the prior stage of sample holding circuit 24, common slicer 27 is inserted so as to cut off a noise component in input signal X(t).
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5850778A JPS54149550A (en) | 1978-05-17 | 1978-05-17 | Automatic equalizer |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5850778A JPS54149550A (en) | 1978-05-17 | 1978-05-17 | Automatic equalizer |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS54149550A true JPS54149550A (en) | 1979-11-22 |
Family
ID=13086324
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP5850778A Pending JPS54149550A (en) | 1978-05-17 | 1978-05-17 | Automatic equalizer |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS54149550A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2010136363A (en) * | 2008-11-12 | 2010-06-17 | Intel Corp | Decision feedback equalizer under portable environment |
JP2012531839A (en) * | 2009-06-30 | 2012-12-10 | インテル コーポレイション | Advanced Television System Committee (ATSC) Digital Television (DTV) Receiver |
-
1978
- 1978-05-17 JP JP5850778A patent/JPS54149550A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2010136363A (en) * | 2008-11-12 | 2010-06-17 | Intel Corp | Decision feedback equalizer under portable environment |
JP2012531839A (en) * | 2009-06-30 | 2012-12-10 | インテル コーポレイション | Advanced Television System Committee (ATSC) Digital Television (DTV) Receiver |
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