IT7850108A0 - Perfezionamento nei filtri per segnali analogici e modem che contengono tali filtri - Google Patents
Perfezionamento nei filtri per segnali analogici e modem che contengono tali filtriInfo
- Publication number
- IT7850108A0 IT7850108A0 IT7850108A IT5010878A IT7850108A0 IT 7850108 A0 IT7850108 A0 IT 7850108A0 IT 7850108 A IT7850108 A IT 7850108A IT 5010878 A IT5010878 A IT 5010878A IT 7850108 A0 IT7850108 A0 IT 7850108A0
- Authority
- IT
- Italy
- Prior art keywords
- filters
- modems
- improvement
- contain
- analogue signals
- Prior art date
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)
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 (2)
Publication Number | Publication Date |
---|---|
IT7850108A0 true IT7850108A0 (it) | 1978-06-29 |
IT1110898B IT1110898B (it) | 1986-01-06 |
Family
ID=25207177
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
IT50108/78A IT1110898B (it) | 1977-06-30 | 1978-06-29 | Perfezionamento nei filtri per segnali analogici e modem che contengono tali filtri |
Country Status (9)
Country | Link |
---|---|
US (1) | US4336613A (it) |
JP (1) | JPS5414108A (it) |
CA (1) | CA1111509A (it) |
DE (1) | DE2828846A1 (it) |
FR (1) | FR2414835A1 (it) |
GB (1) | GB2000662B (it) |
IT (1) | IT1110898B (it) |
NL (1) | NL7807165A (it) |
SE (1) | SE7807322L (it) |
Families Citing this family (30)
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 |
FR2476939A1 (fr) * | 1980-02-26 | 1981-08-28 | Thomson Csf | Filtre transversal pour modulateur-demodulateur et modulateur-demodulateur comportant un tel filtre |
FR2476948A1 (fr) * | 1980-02-26 | 1981-08-28 | Thomson Csf | Demodulateur pour modem a modulation de frequence et modem comportant un tel demodulateur |
FR2476946A1 (fr) * | 1980-02-26 | 1981-08-28 | Thomson Csf | Modulateur-demodulateur a transfert de charges. |
JPS57152855U (it) * | 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 |
US4519083A (en) * | 1982-08-16 | 1985-05-21 | Texas Instruments Incorporated | Bilateral digital data transmission system |
US4571731A (en) * | 1982-08-16 | 1986-02-18 | Texas Instruments Incorporated | PSK modem filter switch |
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 |
KR950011489B1 (ko) * | 1986-10-21 | 1995-10-05 | 모토로라 인코포레이티드 | 선택 호출 무선 수신기 및 그의 동작 방법 |
EP0298484B2 (de) * | 1987-07-10 | 1995-07-12 | Siemens Aktiengesellschaft | Optischer FSK-Homodynempfänger |
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 (en) * | 2006-05-11 | 2012-12-19 | Thomson Licensing | Frequency translation module data clamp |
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 |
Family Cites Families (13)
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 |
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 |
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 |
US4153876A (en) * | 1977-04-27 | 1979-05-08 | Texas Instruments Incorporated | Charge transfer device radio system |
-
1977
- 1977-06-30 US US05/811,657 patent/US4336613A/en not_active Expired - Lifetime
-
1978
- 1978-06-01 GB GB7826220A patent/GB2000662B/en not_active Expired
- 1978-06-27 FR FR7819141A patent/FR2414835A1/fr not_active Withdrawn
- 1978-06-28 CA CA306,446A patent/CA1111509A/en not_active Expired
- 1978-06-28 SE SE7807322A patent/SE7807322L/xx unknown
- 1978-06-29 JP JP7919578A patent/JPS5414108A/ja active Pending
- 1978-06-29 IT IT50108/78A patent/IT1110898B/it active
- 1978-06-30 NL NL7807165A patent/NL7807165A/xx not_active Application Discontinuation
- 1978-06-30 DE DE19782828846 patent/DE2828846A1/de not_active Withdrawn
Also Published As
Publication number | Publication date |
---|---|
JPS5414108A (en) | 1979-02-02 |
US4336613A (en) | 1982-06-22 |
GB2000662B (en) | 1982-03-10 |
DE2828846A1 (de) | 1979-01-18 |
IT1110898B (it) | 1986-01-06 |
GB2000662A (en) | 1979-01-10 |
NL7807165A (nl) | 1979-01-03 |
FR2414835A1 (fr) | 1979-08-10 |
SE7807322L (sv) | 1978-12-31 |
CA1111509A (en) | 1981-10-27 |
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