FR2414835A1 - Filtres a dispositifs a transfert de charge et modems auxquels sont incorpores de tels filtres - Google Patents

Filtres a dispositifs a transfert de charge et modems auxquels sont incorpores de tels filtres

Info

Publication number
FR2414835A1
FR2414835A1 FR7819141A FR7819141A FR2414835A1 FR 2414835 A1 FR2414835 A1 FR 2414835A1 FR 7819141 A FR7819141 A FR 7819141A FR 7819141 A FR7819141 A FR 7819141A FR 2414835 A1 FR2414835 A1 FR 2414835A1
Authority
FR
France
Prior art keywords
filters
modem
incorporated
transfer device
sine wave
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.)
Withdrawn
Application number
FR7819141A
Other languages
English (en)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Texas Instruments Inc
Original Assignee
Texas Instruments Inc
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 Texas Instruments Inc filed Critical Texas Instruments Inc
Publication of FR2414835A1 publication Critical patent/FR2414835A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/10—Frequency-modulated carrier systems, i.e. using frequency-shift keying
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H15/00—Transversal filters
    • H03H15/02—Transversal filters using analogue shift registers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/10—Frequency-modulated carrier systems, i.e. using frequency-shift keying
    • H04L27/14—Demodulator circuits; Receiver circuits
    • H04L27/144—Demodulator circuits; Receiver circuits with demodulation using spectral properties of the received signal, e.g. by using frequency selective- or frequency sensitive elements

Landscapes

  • Engineering & Computer Science (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)
  • Analogue/Digital Conversion (AREA)
  • Filters That Use Time-Delay Elements (AREA)

Abstract

Modem utilisant des circuits de dispositif à transfert de char et IGFET et des sous-systèmes compatibles au point de vue technologie de traitement, tous ces éléments étant incorporés à une unique micro-plaquette de circuit intégré. On utilise des filtres transversaux à dispositifs à transfert de charge comme filtres passe-bande qui sont accordés pour différents modes de fonctionnement par ajustement de la fréquence d'horloge. Les filtres poste-bande sont commandés conjointement à un amplificateur de charge pour éliminer l'offset de courant continu de la sortie analogique des filtres. La section démodulateur du modem comporte également un filtre passe-bas utilisant des résistances commutées. La section modulateur comprend des générateurs de formes d'onde basés sur l'utilisation d'un convertisseur numérique-analogique comprenant des condensateurs commutés ayant des capacités choisies de telle manière qu'une onde sinusoïdale présentant une distorsion minimale soit engendrée lorsque la commutation s'effectue suivant une séquence appropriée. Des dispositions sont prévues pour appliquer des signaux d'entrée numériques en vue d'ajuster la fréquence et l'amplitude de l'onde sinusoïdale de sortie. Le modem peut fonctionner sous la commande d'un micro-processeur. Applications particulières à la téléphonie.
FR7819141A 1977-06-30 1978-06-27 Filtres a dispositifs a transfert de charge et modems auxquels sont incorpores de tels filtres Withdrawn FR2414835A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/811,657 US4336613A (en) 1977-06-30 1977-06-30 Charge coupled device filters and modems incorporating such filters

Publications (1)

Publication Number Publication Date
FR2414835A1 true FR2414835A1 (fr) 1979-08-10

Family

ID=25207177

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7819141A Withdrawn FR2414835A1 (fr) 1977-06-30 1978-06-27 Filtres a dispositifs a transfert de charge et modems auxquels sont incorpores de tels filtres

Country Status (9)

Country Link
US (1) US4336613A (fr)
JP (1) JPS5414108A (fr)
CA (1) CA1111509A (fr)
DE (1) DE2828846A1 (fr)
FR (1) FR2414835A1 (fr)
GB (1) GB2000662B (fr)
IT (1) IT1110898B (fr)
NL (1) NL7807165A (fr)
SE (1) SE7807322L (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2476939A1 (fr) * 1980-02-26 1981-08-28 Thomson Csf Filtre transversal pour modulateur-demodulateur et modulateur-demodulateur comportant un tel filtre
FR2476946A1 (fr) * 1980-02-26 1981-08-28 Thomson Csf Modulateur-demodulateur a transfert de charges.

Families Citing this family (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4142245A (en) * 1977-08-22 1979-02-27 Texas Instruments Incorporated Multi-frequency digital wave synthesizer for providing analog output signals
FR2476948A1 (fr) * 1980-02-26 1981-08-28 Thomson Csf Demodulateur pour modem a modulation de frequence et modem comportant un tel demodulateur
JPS57152855U (fr) * 1981-03-20 1982-09-25
JPS57173232A (en) * 1981-04-17 1982-10-25 Hitachi Ltd Automatic equalizer
US4481642A (en) * 1981-06-02 1984-11-06 Texas Instruments Incorporated Integrated circuit FSK modem
US4466106A (en) * 1981-08-28 1984-08-14 Novation, Inc. Frequency shift keyed modem chip set
US4425665A (en) * 1981-09-24 1984-01-10 Advanced Micro Devices, Inc. FSK Voiceband modem using digital filters
DE3311181A1 (de) * 1982-03-29 1983-09-29 Racal-Data Communication, Inc., 33166 Miami, Fla. Daten-modem
US4538282A (en) * 1982-08-16 1985-08-27 Texas Instruments Incorporated Integrated circuit PSK modem phase locked loop
US4559634A (en) * 1982-08-16 1985-12-17 Texas Instruments Incorporated PSK Modem having dual-integrator voltage controlled oscillator
US4571731A (en) * 1982-08-16 1986-02-18 Texas Instruments Incorporated PSK modem filter switch
US4519083A (en) * 1982-08-16 1985-05-21 Texas Instruments Incorporated Bilateral digital data transmission system
JP2592795B2 (ja) * 1985-05-24 1997-03-19 キヤノン株式会社 情報データ復調装置
US4788693A (en) * 1985-09-30 1988-11-29 American Telephone And Telegraph Company, At&T Bell Laboratories Data communication replicator
US4694471A (en) * 1986-05-05 1987-09-15 Blesser Barry A Digital data communicating
EP0327533B1 (fr) * 1986-10-21 1993-07-07 Motorola, Inc. Recepteur de radiocommunications avec appareil pour modifier le debit binaire du recepteur
EP0298484B2 (fr) * 1987-07-10 1995-07-12 Siemens Aktiengesellschaft Récepteur optique synchrone pour signaux FSK
US5557641A (en) * 1994-03-04 1996-09-17 Stanford Telecommunications, Inc. Charge-coupled-device based transmitters and receivers
US5577066A (en) * 1994-05-13 1996-11-19 Stanford Telecommunications, Inc. Charge-coupled-device based data-in-voice modem
US6167246A (en) * 1997-05-09 2000-12-26 Micrel Incorporated Fully integrated all-CMOS AM receiver
GB2335809B (en) * 1998-03-24 2001-09-12 Ericsson Telefon Ab L M Demodulator circuits
JP5087222B2 (ja) * 2005-12-26 2012-12-05 株式会社リコー Ｉｃタグ用リーダ及び／又はライタ、並びにそのアンテナユニット
EP2016771B1 (fr) * 2006-05-11 2012-12-19 Thomson Licensing Blocage de données de module de transposition de fréquence
US20080248765A1 (en) * 2007-04-04 2008-10-09 Micrel, Inc. Superheterodyne Receiver with Switchable Local Oscillator Frequency and Reconfigurable IF Filter Characteristics
US9941813B2 (en) 2013-03-14 2018-04-10 Solaredge Technologies Ltd. High frequency multi-level inverter
US9318974B2 (en) 2014-03-26 2016-04-19 Solaredge Technologies Ltd. Multi-level inverter with flying capacitor topology
RU2702499C1 (ru) * 2019-03-14 2019-10-08 федеральное государственное бюджетное образовательное учреждение высшего образования "Донской государственный технический университет" (ДГТУ) Универсальный активный rc-фильтр
RU2702496C1 (ru) * 2019-03-15 2019-10-08 федеральное государственное бюджетное образовательное учреждение высшего образования "Донской государственный технический университет" (ДГТУ) Универсальный активный rc-фильтр на основе мультидифференциальных операционных усилителей

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3877056A (en) * 1973-01-02 1975-04-08 Texas Instruments Inc Charge transfer device signal processing system
GB1443970A (en) * 1973-01-02 1976-07-28 Texas Instruments Inc Charge transfer device matched filter
US3987293A (en) * 1975-08-04 1976-10-19 Sperry Rand Corporation Programmable general purpose analog filter
US4071775A (en) * 1976-04-02 1978-01-31 Texas Instruments Incorporated Charge coupled differential amplifier for transversal filter

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT980928B (it) * 1973-04-30 1974-10-10 Cselt Centro Studi Lab Telecom Apparecchiature di utente e di in gresso ad una centrale pcm per la trasmissione di dati ad alta velo cita
US3879664A (en) * 1973-05-07 1975-04-22 Signatron High speed digital communication receiver
US3832637A (en) * 1973-06-22 1974-08-27 Teletype Corp Fsk modem
US3909527A (en) * 1973-09-18 1975-09-30 Mitsubishi Electric Corp Frequency shift keying system and method
US3942034A (en) * 1973-12-28 1976-03-02 Texas Instruments Incorporated Charge transfer device for frequency filtering respective time segments of an input signal
US3943448A (en) * 1974-09-11 1976-03-09 Hycom Incorporated Apparatus and method for synchronizing a digital modem using a random multilevel data signal
US3999152A (en) * 1974-10-21 1976-12-21 Hughes Aircraft Company CCD selective transversal filter
US3978407A (en) * 1975-07-23 1976-08-31 Codex Corporation Fast start-up adaptive equalizer communication system using two data transmission rates
US4132950A (en) * 1977-04-27 1979-01-02 Texas Instruments Incorporated Clarifying radio receiver

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3877056A (en) * 1973-01-02 1975-04-08 Texas Instruments Inc Charge transfer device signal processing system
GB1443970A (en) * 1973-01-02 1976-07-28 Texas Instruments Inc Charge transfer device matched filter
US3987293A (en) * 1975-08-04 1976-10-19 Sperry Rand Corporation Programmable general purpose analog filter
US4071775A (en) * 1976-04-02 1978-01-31 Texas Instruments Incorporated Charge coupled differential amplifier for transversal filter

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
EXBK/75 *
EXBK/76 *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2476939A1 (fr) * 1980-02-26 1981-08-28 Thomson Csf Filtre transversal pour modulateur-demodulateur et modulateur-demodulateur comportant un tel filtre
FR2476946A1 (fr) * 1980-02-26 1981-08-28 Thomson Csf Modulateur-demodulateur a transfert de charges.
EP0035432A1 (fr) * 1980-02-26 1981-09-09 Thomson-Csf Filtre transversal pour modulateur-démodulateur, et modulateur-démodulateur comportant un tel filtre
US4472810A (en) * 1980-02-26 1984-09-18 Thomson-Csf Charge-transfer modulator-demodulator

Also Published As

Publication number Publication date
JPS5414108A (en) 1979-02-02
DE2828846A1 (de) 1979-01-18
NL7807165A (nl) 1979-01-03
IT1110898B (it) 1986-01-06
GB2000662A (en) 1979-01-10
US4336613A (en) 1982-06-22
GB2000662B (en) 1982-03-10
SE7807322L (sv) 1978-12-31
IT7850108A0 (it) 1978-06-29
CA1111509A (fr) 1981-10-27

Similar Documents

Publication Publication Date Title
FR2414835A1 (fr) Filtres a dispositifs a transfert de charge et modems auxquels sont incorpores de tels filtres
US4504803A (en) Switched capacitor AM modulator/demodulator
US4940977A (en) Adaptive-filter single-bit digital encoder and decoder and adaptation control circuit responsive to bit-stream loading
US4187466A (en) Signal injection technique
EP1255350A3 (fr) Amplificateur et méthode d'amplification de signaux
KR0169102B1 (ko) 샘플-홀드 장치
JPS6468022A (en) Differential analog/digital converter and method of analog/digital conversion
Lee et al. A switched-capacitor realization of multiple FIR filters on a single chip
EP0135437B1 (fr) Générateur d'onde sinusoidale, dont la fréquence est asservie à un signal binaire, notamment pour Modem
EP0686323B1 (fr) Convertisseurs analogiques-numeriques et convertisseurs numeriques-analogiques a un bit utilisant un filtre adaptatif a deux regimes de fonctionnement
US7043206B2 (en) Fully integrated offset compensation feedback circuit
KR0179411B1 (ko) 신호를 적분하는 방법 및 장치
GB1496300A (en) Processing of analogue signals
US5727024A (en) Circuit configuration for conversion of a one-bit digital signal into an analog signal
YONEDA et al. Switched-capacitor DFT and IDFT circuit
Scott et al. A CMOS slope adaptive delta modulator
JPS6439122A (en) Digital data demodulating circuit
GB2002193A (en) Active low-pass filters
US4250469A (en) Filter for converting pulse width modulation to amplitude modulation
Leindler On strong approximation of Fourier series
JPS5717220A (en) Switched capacitor type filter device
US5952879A (en) Device for the simultaneous demodulation of a multifrequency signal, particularly for an eddy current measurement
KR0152670B1 (ko) 초퍼 안정화 스위치드 캐패시터 필터
Fotouhi et al. A single-chip CMOS analog front-end for high-speed modems
JPS56166613A (en) Voltage to current converting circuit

Legal Events

Date Code Title Description
ST Notification of lapse