SG54601A1 - Multi-level comparator for demodulator - Google Patents

Multi-level comparator for demodulator

Info

Publication number
SG54601A1
SG54601A1 SG1997004104A SG1997004104A SG54601A1 SG 54601 A1 SG54601 A1 SG 54601A1 SG 1997004104 A SG1997004104 A SG 1997004104A SG 1997004104 A SG1997004104 A SG 1997004104A SG 54601 A1 SG54601 A1 SG 54601A1
Authority
SG
Singapore
Prior art keywords
demodulator
level comparator
comparator
level
Prior art date
Application number
SG1997004104A
Other languages
English (en)
Inventor
Shouichi Kuroki
Original Assignee
Sony Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Sony Corp filed Critical Sony Corp
Publication of SG54601A1 publication Critical patent/SG54601A1/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/38—Synchronous or start-stop systems, e.g. for Baudot code
    • H04L25/40—Transmitting circuits; Receiving circuits
    • H04L25/49—Transmitting circuits; Receiving circuits using code conversion at the transmitter; using predistortion; using insertion of idle bits for obtaining a desired frequency spectrum; using three or more amplitude levels ; Baseband coding techniques specific to data transmission systems
    • H04L25/4917—Transmitting circuits; Receiving circuits using code conversion at the transmitter; using predistortion; using insertion of idle bits for obtaining a desired frequency spectrum; using three or more amplitude levels ; Baseband coding techniques specific to data transmission systems using multilevel codes
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
    • H03D1/00—Demodulation of amplitude-modulated oscillations
    • H03D1/02—Details
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
    • H03D1/00—Demodulation of amplitude-modulated oscillations
    • H03D1/22—Homodyne or synchrodyne circuits
    • 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
    • H04L25/06—Dc level restoring means; Bias distortion correction ; Decision circuits providing symbol by symbol detection
    • H04L25/061—Dc level restoring means; Bias distortion correction ; Decision circuits providing symbol by symbol detection providing hard decisions only; arrangements for tracking or suppressing unwanted low frequency components, e.g. removal of dc offset
    • H04L25/062—Setting decision thresholds using feedforward techniques only
    • 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
    • H04L25/06—Dc level restoring means; Bias distortion correction ; Decision circuits providing symbol by symbol detection
    • H04L25/061—Dc level restoring means; Bias distortion correction ; Decision circuits providing symbol by symbol detection providing hard decisions only; arrangements for tracking or suppressing unwanted low frequency components, e.g. removal of dc offset
    • H04L25/063—Setting decision thresholds using feedback techniques only
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
    • H03D2200/00—Indexing scheme relating to details of demodulation or transference of modulation from one carrier to another covered by H03D
    • H03D2200/0041—Functional aspects of demodulators
    • H03D2200/0045—Calibration of demodulators

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Circuits Of Receivers In General (AREA)
SG1997004104A 1996-11-28 1997-11-20 Multi-level comparator for demodulator SG54601A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8317733A JPH10163877A (ja) 1996-11-28 1996-11-28 復調回路における多値コンパレータのしきい値制御回路

Publications (1)

Publication Number Publication Date
SG54601A1 true SG54601A1 (en) 1998-11-16

Family

ID=18091443

Family Applications (1)

Application Number Title Priority Date Filing Date
SG1997004104A SG54601A1 (en) 1996-11-28 1997-11-20 Multi-level comparator for demodulator

Country Status (4)

Country Link
US (1) US6173018B1 (ja)
JP (1) JPH10163877A (ja)
KR (1) KR19980042393A (ja)
SG (1) SG54601A1 (ja)

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JP3204233B2 (ja) * 1998-11-30 2001-09-04 日本電気株式会社 周波数−電圧変換回路と受信機および周波数−電圧変換特性の制御方法
JP2003110850A (ja) * 2001-09-26 2003-04-11 Aisin Seiki Co Ltd 信号処理装置
JP2005020692A (ja) * 2003-06-02 2005-01-20 Matsushita Electric Ind Co Ltd データ受信方法およびその装置、並びにデータ伝送システム
US7436320B2 (en) * 2003-06-16 2008-10-14 Baker Hughes Incorporated Sensor system and method of communicating data between a downhole device on a remote location
AU2004240146A1 (en) * 2003-12-17 2005-07-07 Nec Australia Pty Ltd Demodulation of a multi-level quadrature amplitude modulation signal
KR100936200B1 (ko) * 2005-02-28 2010-01-11 후지쯔 가부시끼가이샤 복조 회로 및 전자기기
FR2883434B1 (fr) * 2005-03-21 2007-04-20 Commissariat Energie Atomique Methode et dispositif de demodulation a deux niveaux.
FR2883433B1 (fr) * 2005-03-21 2007-04-20 Commissariat Energie Atomique Methode et dispositif de demodulation multiniveaux.
JP4508960B2 (ja) * 2005-06-29 2010-07-21 株式会社ケンウッド 変調信号のシンボル判定装置、変調信号のシンボル判定方法、変調信号のシンボル判定プログラム及び記録媒体
JP4508961B2 (ja) * 2005-06-30 2010-07-21 株式会社ケンウッド シンボル判定装置、シンボル判定装置のシンボル判定方法、シンボル判定プログラム及び記録媒体
US7684516B2 (en) * 2006-04-28 2010-03-23 Motorola, Inc. Method and apparatus for improving signal reception in a receiver
US8750406B2 (en) 2012-01-31 2014-06-10 Altera Corporation Multi-level amplitude signaling receiver
KR102110841B1 (ko) 2013-08-01 2020-05-14 삼성전자주식회사 신호 복조를 위하여 임계값을 적응적으로 설정하는 방법 및 장치
US9595495B1 (en) 2015-09-28 2017-03-14 Altera Corporation Multi-level signaling for on-package chip-to-chip interconnect through silicon bridge
JP6653838B2 (ja) * 2015-12-18 2020-02-26 国立研究開発法人情報通信研究機構 無線受信機
US10623214B1 (en) 2018-12-01 2020-04-14 Hcl Technologies Limited System and method for multi-level amplitude modulation and demodulation
US10616013B1 (en) 2018-12-27 2020-04-07 Emhiser Research Limited DC coupled digital demodulator with drift eliminator
CN110278034A (zh) * 2019-08-07 2019-09-24 青岛海信宽带多媒体技术有限公司 一种光模块及光接收控制方法
US10892800B1 (en) 2020-01-06 2021-01-12 Nucurrent, Inc. Systems and methods for wireless power transfer including pulse width encoded data communications
US11303165B2 (en) 2020-07-24 2022-04-12 Nucurrent, Inc. Low cost communications demodulation for wireless power receiver system
US11303164B2 (en) 2020-07-24 2022-04-12 Nucurrent, Inc. Low cost communications demodulation for wireless power transmission system
US11277035B1 (en) 2021-02-01 2022-03-15 Nucurrent, Inc. Automatic gain control for communications demodulation in wireless power transmitters
US11431205B2 (en) 2021-02-01 2022-08-30 Nucurrent, Inc. Systems and methods for receiver beaconing in wireless power systems
US11811244B2 (en) * 2021-02-01 2023-11-07 Nucurrent, Inc. Automatic gain control for communications demodulation in wireless power transmitters
US11277031B1 (en) 2021-02-01 2022-03-15 Nucurrent, Inc. Automatic gain control for communications demodulation in wireless power transmitters
US11277034B1 (en) 2021-02-01 2022-03-15 Nucurrent, Inc. Systems and methods for receiver beaconing in wireless power systems
US11431204B2 (en) 2021-02-01 2022-08-30 Nucurrent, Inc. Automatic gain control for communications demodulation in wireless power transfer systems
US11569694B2 (en) 2021-02-01 2023-01-31 Nucurrent, Inc. Automatic gain control for communications demodulation in wireless power receivers

Family Cites Families (14)

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Publication number Priority date Publication date Assignee Title
US4250458A (en) * 1979-05-31 1981-02-10 Digital Communications Corporation Baseband DC offset detector and control circuit for DC coupled digital demodulator
AU559584B2 (en) * 1983-07-22 1987-03-12 Nec Corporation Demodulator for multilevel amplitude modulation system
JPH0626353B2 (ja) 1987-05-19 1994-04-06 日本電気株式会社 復調装置
US4972482A (en) 1987-09-18 1990-11-20 Sanyo Electric Co., Ltd. Fm stereo demodulator
DE3834118A1 (de) 1988-10-07 1990-04-12 Philips Patentverwaltung Schaltungsanordnung zum demodulieren eines frequenzmodulierten signals
US4873702A (en) * 1988-10-20 1989-10-10 Chiu Ran Fun Method and apparatus for DC restoration in digital receivers
US5052021A (en) * 1989-05-19 1991-09-24 Kabushiki Kaisha Toshiba Digital signal decoding circuit and decoding method
US5343499A (en) * 1990-06-12 1994-08-30 Motorola, Inc. Quadrature amplitude modulation synchronization method
US5521941A (en) * 1990-11-29 1996-05-28 Motorola, Inc. Automatic threshold control for multi-level signals
US5175749A (en) * 1991-01-25 1992-12-29 Motorola, Inc. Apparatus and method for dc offset correction in a receiver
US5400366A (en) * 1992-07-09 1995-03-21 Fujitsu Limited Quasi-synchronous detection and demodulation circuit and frequency discriminator used for the same
US5303416A (en) * 1993-01-21 1994-04-12 Motorola, Inc. Method and apparatus for adjusting peak and valley acquisition rates of a signal received by a radio communication device
US5425056A (en) * 1993-03-23 1995-06-13 Motorola, Inc. Method and apparatus for generating threshold levels in a radio communication device for receiving four-level signals
US5670951A (en) * 1995-07-17 1997-09-23 Motorola, Inc. Radio communication device and method for generating threshold levels in a radio communication device for receiving four-level signals

Also Published As

Publication number Publication date
US6173018B1 (en) 2001-01-09
JPH10163877A (ja) 1998-06-19
KR19980042393A (ko) 1998-08-17

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