DK417682A - Digitalt kommunikationsapparat - Google Patents
Digitalt kommunikationsapparat Download PDFInfo
- Publication number
- DK417682A DK417682A DK417682A DK417682A DK417682A DK 417682 A DK417682 A DK 417682A DK 417682 A DK417682 A DK 417682A DK 417682 A DK417682 A DK 417682A DK 417682 A DK417682 A DK 417682A
- Authority
- DK
- Denmark
- Prior art keywords
- message
- signal
- som
- modem
- data bit
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/20—Arrangements for detecting or preventing errors in the information received using signal quality detector
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/0078—Avoidance of errors by organising the transmitted data in a format specifically designed to deal with errors, e.g. location
- H04L1/0083—Formatting with frames or packets; Protocol or part of protocol for error control
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/02—Arrangements for detecting or preventing errors in the information received by diversity reception
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/26—Systems using multi-frequency codes
- H04L27/30—Systems using multi-frequency codes wherein each code element is represented by a combination of frequencies
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Quality & Reliability (AREA)
- Detection And Prevention Of Errors In Transmission (AREA)
- Noise Elimination (AREA)
- Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
- Time-Division Multiplex Systems (AREA)
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB8102714 | 1981-01-29 | ||
GB8102714 | 1981-01-29 | ||
PCT/GB1982/000025 WO1982002633A1 (en) | 1981-01-29 | 1982-01-27 | High frequency communications |
GB8200025 | 1982-01-27 |
Publications (3)
Publication Number | Publication Date |
---|---|
DK417682A true DK417682A (da) | 1982-09-20 |
DK159233B DK159233B (da) | 1990-09-17 |
DK159233C DK159233C (da) | 1991-03-04 |
Family
ID=10519317
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DK417682A DK159233C (da) | 1981-01-29 | 1982-09-20 | Digitalt kommunikationsapparat |
Country Status (6)
Country | Link |
---|---|
US (1) | US4606047A (da) |
EP (1) | EP0070287B1 (da) |
JP (2) | JPH0642658B2 (da) |
DE (1) | DE3264346D1 (da) |
DK (1) | DK159233C (da) |
WO (1) | WO1982002633A1 (da) |
Families Citing this family (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2140254B (en) * | 1980-11-21 | 1985-09-25 | Western Electric Co | Mobile radio system |
DE3338510A1 (de) * | 1983-10-22 | 1985-05-02 | ANT Nachrichtentechnik GmbH, 7150 Backnang | Verfahren zur wiedergewinnung der information eines datensignals bei mehrwegeuebertragung |
GB2182529A (en) * | 1985-10-30 | 1987-05-13 | Philips Electronic Associated | Digital communication of analogue signals |
CH671124A5 (da) * | 1986-04-30 | 1989-07-31 | Zellweger Uster Ag | |
CH673550A5 (da) * | 1987-09-29 | 1990-03-15 | Zellweger Telecomm Ag | |
US4963744A (en) * | 1989-06-26 | 1990-10-16 | Gas Research Institute | Method and apparatus for providing accurate low noise demodulation |
DE3934384A1 (de) * | 1989-10-14 | 1991-04-18 | Kommunikations Elektronik | Verfahren zur verstaerkung eines burst-signals |
US5127404A (en) * | 1990-01-22 | 1992-07-07 | Medtronic, Inc. | Telemetry format for implanted medical device |
GB9010637D0 (en) * | 1990-05-11 | 1990-07-04 | Secr Defence | A high frequency multichannel diversity differential phase shift(dpsk)communications system |
DE4018044A1 (de) * | 1990-06-06 | 1991-12-12 | Philips Patentverwaltung | Empfaenger mit mindestens zwei empfangszweigen |
DE4326694C2 (de) * | 1993-08-10 | 2003-12-24 | Gunther Krieg | Vorrichtung zur Detektion von Urin in Behältern |
US5703479A (en) * | 1994-12-02 | 1997-12-30 | Motorola, Inc. | Method and apparatus for fault isolation by a communication system tester |
FR2743231B1 (fr) * | 1995-12-29 | 1998-01-30 | Thomson Multimedia Sa | Procede et dispositif de diversite de frequence d'une porteuse shf |
DE19837426C2 (de) | 1998-08-18 | 2001-12-06 | Fraunhofer Ges Forschung | Verfahren und Vorrichtung zum Senden von Informationssymbolen mittels einer Mehrzahl von Trägern und Verfahren und Vorrichtung zum Empfangen von Informationssymbolen |
US6434189B1 (en) * | 1999-06-17 | 2002-08-13 | Stmicroelectronics, Inc. | Communications system and method for reducing the effects of transmitter non-linear distortion on a received signal |
JP4161487B2 (ja) * | 1999-11-01 | 2008-10-08 | ソニー株式会社 | データ復号装置及び方法 |
GB2398964B (en) * | 2003-02-27 | 2005-08-17 | Toshiba Res Europ Ltd | Signal processing apparatus and methods |
US7324608B1 (en) * | 2003-03-14 | 2008-01-29 | Ralink Technology, Inc. | Efficient subcarrier weighting to enhance receiver performance |
US7695461B2 (en) * | 2004-09-16 | 2010-04-13 | Mcneil-Ppc, Inc. | Drapeable sanitary absorbent napkin |
Family Cites Families (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL200760A (nl) * | 1954-12-13 | Acec | Ontvanger met mechanische selectoren voor de ontvangst van tekens, elk gevormd door twee signalen van verschillende frequentie | |
US3288940A (en) * | 1963-10-24 | 1966-11-29 | Automatic Elect Lab | Multifrequency signal receiver |
GB1027108A (en) * | 1964-02-10 | 1966-04-20 | Ass Elect Ind | Improvements relating to data transmission systems |
US3499108A (en) * | 1965-08-25 | 1970-03-03 | Us Navy | Communication system |
NL145117B (nl) * | 1966-02-26 | 1975-02-17 | Philips Nv | Foutencorrigerend informatietransmissiesysteem. |
GB1143202A (en) * | 1966-06-22 | 1969-02-19 | British Telecomm Res Ltd | Improvements in electrical signalling systems using a common transmission path |
GB1155633A (en) * | 1967-07-28 | 1969-06-18 | Marconi Co Ltd | Improvements in or relating to Compressed Pulse Communication Systems |
BE793727A (fr) * | 1972-01-07 | 1973-07-05 | Philips Nv | Systeem voor de overdracht van datasignalen met behulp van lineaire frequentiemodulatie |
US3810019A (en) * | 1972-09-25 | 1974-05-07 | Sperry Rand Corp | Multifrequency communication system for fading channels |
US3895223A (en) * | 1973-01-03 | 1975-07-15 | Westinghouse Electric Corp | Circuit arrangement for enhancing the reliability of common bus outputs of plural redundant systems |
US3988679A (en) * | 1973-05-04 | 1976-10-26 | General Electric Company | Wideband receiving system including multi-channel filter for eliminating narrowband interference |
US3909527A (en) * | 1973-09-18 | 1975-09-30 | Mitsubishi Electric Corp | Frequency shift keying system and method |
SE377643B (da) * | 1973-11-09 | 1975-07-14 | Philips Svenska Ab | |
FR2409652A1 (fr) * | 1977-11-18 | 1979-06-15 | Materiel Telephonique | Recepteur de signaux numeriques multifrequences codes |
US4306308A (en) * | 1979-09-14 | 1981-12-15 | Rca Corporation | Symbols communication system |
-
1982
- 1982-01-27 DE DE8282900309T patent/DE3264346D1/de not_active Expired
- 1982-01-27 JP JP57500327A patent/JPH0642658B2/ja not_active Expired - Lifetime
- 1982-01-27 WO PCT/GB1982/000025 patent/WO1982002633A1/en active IP Right Grant
- 1982-01-27 US US06/432,939 patent/US4606047A/en not_active Expired - Lifetime
- 1982-01-27 EP EP82900309A patent/EP0070287B1/en not_active Expired
- 1982-09-20 DK DK417682A patent/DK159233C/da not_active IP Right Cessation
-
1994
- 1994-01-06 JP JP6011299A patent/JPH0756945B2/ja not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
EP0070287A1 (en) | 1983-01-26 |
JPH0756945B2 (ja) | 1995-06-14 |
JPH06318879A (ja) | 1994-11-15 |
DK159233C (da) | 1991-03-04 |
JPS58500099A (ja) | 1983-01-13 |
WO1982002633A1 (en) | 1982-08-05 |
EP0070287B1 (en) | 1985-06-26 |
US4606047A (en) | 1986-08-12 |
DE3264346D1 (en) | 1985-08-01 |
JPH0642658B2 (ja) | 1994-06-01 |
DK159233B (da) | 1990-09-17 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DK417682A (da) | Digitalt kommunikationsapparat | |
NO925019L (no) | System og fremgangsmaate for aa frembringe signalboelgeformer i et telefonnett av cdma-typen | |
EP0074848A3 (en) | Method and apparatus for data transmission using chirped frequency-shift-keying modulation | |
DE3369618D1 (en) | Method for the digital transmission of information | |
FI911914A0 (fi) | Saendare, oeverfoeringsmetod och mottagare. | |
DK163471C (da) | Fremgangsmaade, sender og modtager til selvsynkroniserende transmission af digitale datasignaler | |
EP0693835A3 (en) | Synchronization of a wireless telephone | |
GB1476843A (en) | Radiotelephone system | |
JPS57170652A (en) | Transmitting system for burst signal | |
US5060240A (en) | Simulcast system and channel unit | |
DK303384A (da) | Fremgangsmaade til overfoering af en ekstra informationskanal over et transmissionsmedium | |
AU8382575A (en) | Digital transmission system for transmitting speech signals at a low bit rate, and transmitter for use in such a system | |
AU576139B2 (en) | Digital data decoder & method | |
JPS5545296A (en) | Method of synchronizing transmitter and receiver | |
EP0144245A3 (en) | Transmitter/receiver system | |
US5517433A (en) | Parallel digital data communications | |
GB2134756A (en) | Signal transmission system having encoder/decoder without frame synchronization signal | |
ES528863A0 (es) | Procedimiento para la transmision digital fonica a traves de un canal unico de radiocomunicacion | |
GB1276568A (en) | Picture telephone arrangements | |
EP0112697A3 (en) | Priority coding system | |
DE3360367D1 (en) | Method of dispersing additional information in connection with information signals to be transmitted through a data exchange | |
SU1538285A1 (ru) | Способ передачи и приема цифровой информации | |
Kourtis et al. | Analogue time division multiplexing | |
JP3033006B2 (ja) | 通信回線のビット誤り測定装置 | |
KR20000002620A (ko) | 이중음 다주파신호를 이용한 데이터 통신 시스템 및 그 방법 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUP | Patent expired |