JPS6115624B2 - - Google Patents
Info
- Publication number
- JPS6115624B2 JPS6115624B2 JP53122110A JP12211078A JPS6115624B2 JP S6115624 B2 JPS6115624 B2 JP S6115624B2 JP 53122110 A JP53122110 A JP 53122110A JP 12211078 A JP12211078 A JP 12211078A JP S6115624 B2 JPS6115624 B2 JP S6115624B2
- Authority
- JP
- Japan
- Prior art keywords
- signal
- modulation
- pulse
- optical
- pam
- 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.)
- Expired
Links
- 230000005540 biological transmission Effects 0.000 claims description 21
- 230000003287 optical effect Effects 0.000 claims description 17
- 238000005070 sampling Methods 0.000 claims description 17
- 238000000034 method Methods 0.000 claims description 15
- 239000013307 optical fiber Substances 0.000 claims description 14
- 230000001360 synchronised effect Effects 0.000 claims description 13
- 230000010354 integration Effects 0.000 claims description 7
- 238000006243 chemical reaction Methods 0.000 claims description 2
- 239000000284 extract Substances 0.000 claims description 2
- 230000011664 signaling Effects 0.000 claims description 2
- 230000003993 interaction Effects 0.000 claims 3
- 239000000969 carrier Substances 0.000 claims 1
- 230000008929 regeneration Effects 0.000 claims 1
- 238000011069 regeneration method Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 9
- 238000011084 recovery Methods 0.000 description 4
- 238000001514 detection method Methods 0.000 description 3
- 230000003595 spectral effect Effects 0.000 description 3
- 230000005684 electric field Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000010287 polarization Effects 0.000 description 2
- 230000003321 amplification Effects 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000006399 behavior Effects 0.000 description 1
- 230000008033 biological extinction Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 230000033764 rhythmic process Effects 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
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
- H04L25/4906—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 binary codes
- H04L25/4908—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 binary codes using mBnB codes
Landscapes
- Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Optical Communication System (AREA)
- Dc Digital Transmission (AREA)
- Light Guides In General And Applications Therefor (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT6927777A IT1091439B (it) | 1977-10-13 | 1977-10-13 | Procedimento e sistema di modulazione e demodulazione per trasmissione numerica |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5461815A JPS5461815A (en) | 1979-05-18 |
| JPS6115624B2 true JPS6115624B2 (US07534539-20090519-C00280.png) | 1986-04-25 |
Family
ID=11311740
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12211078A Granted JPS5461815A (en) | 1977-10-13 | 1978-10-05 | Method of and device for modulating and demodulating optical fiber digital transmission |
Country Status (8)
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01174257U (US07534539-20090519-C00280.png) * | 1988-05-31 | 1989-12-11 | ||
| JPH0424814U (US07534539-20090519-C00280.png) * | 1990-06-22 | 1992-02-27 |
Families Citing this family (33)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0018142B1 (en) * | 1979-04-17 | 1982-12-29 | Gec-Marconi Limited | Data transmission systems |
| DE2944459C2 (de) * | 1979-11-03 | 1984-04-26 | ANT Nachrichtentechnik GmbH, 7150 Backnang | Verfahren zum Übertragen von Bipolarsignalen mittels eines optischen Senders |
| US4249266A (en) * | 1979-11-06 | 1981-02-03 | Perkins Research & Mfg. Co., Inc. | Fiber optics communication system |
| JPS57164662A (en) * | 1981-04-03 | 1982-10-09 | Hitachi Ltd | Compression system for multilevel signal |
| DE3117221A1 (de) * | 1981-04-30 | 1983-02-03 | Siemens AG, 1000 Berlin und 8000 München | Umsetzung von binaeren signalen fuer lichtwellenleiteruebertragungssysteme |
| US4918689A (en) * | 1985-10-10 | 1990-04-17 | Bell Communications Research, Inc. | Asynchronous communication system |
| GB2235076B (en) * | 1989-08-17 | 1994-05-04 | Asahi Optical Co Ltd | Camera data communication method and camera |
| FR2652215B1 (fr) * | 1989-09-19 | 1994-06-10 | France Etat | Procede de codage d'un signal numerique, codeur et decodeur pour la mise en óoeuvre de ce procede, procede de regeneration et regenerateur correspondant. |
| US5969839A (en) * | 1995-07-10 | 1999-10-19 | Fuji Electric Co., Ltd. | Optical communications device |
| US5825823A (en) * | 1997-06-06 | 1998-10-20 | General Datacomm, Inc. | PCM channel diagnosis |
| EP1131927A1 (de) * | 1998-11-16 | 2001-09-12 | Siemens Aktiengesellschaft | Verfahren zum einstellen einer strahlungsleistung in einem sender |
| US7173551B2 (en) * | 2000-12-21 | 2007-02-06 | Quellan, Inc. | Increasing data throughput in optical fiber transmission systems |
| US7149256B2 (en) | 2001-03-29 | 2006-12-12 | Quellan, Inc. | Multilevel pulse position modulation for efficient fiber optic communication |
| US7307569B2 (en) * | 2001-03-29 | 2007-12-11 | Quellan, Inc. | Increasing data throughput in optical fiber transmission systems |
| ATE492076T1 (de) * | 2001-04-04 | 2011-01-15 | Quellan Inc | Verfahren und system zum decodieren von mehrpegelsignalen |
| WO2002091565A2 (en) * | 2001-05-04 | 2002-11-14 | Ok-Sang Jin | Signal amplifying method, signal amplifier and devices related therewith |
| WO2003071731A1 (en) * | 2002-02-15 | 2003-08-28 | Quellan, Inc. | Multi-level signal clock recovery technique |
| US8639127B2 (en) * | 2002-03-06 | 2014-01-28 | Alcatel Lucent | Method and apparatus for improved jitter tolerance |
| US7035361B2 (en) * | 2002-07-15 | 2006-04-25 | Quellan, Inc. | Adaptive noise filtering and equalization for optimal high speed multilevel signal decoding |
| AU2003287628A1 (en) * | 2002-11-12 | 2004-06-03 | Quellan, Inc. | High-speed analog-to-digital conversion with improved robustness to timing uncertainty |
| SG112880A1 (en) * | 2003-05-21 | 2005-07-28 | Sony Corp | Method and apparatus for modulating uwb signals |
| GB2421674B (en) * | 2003-08-07 | 2006-11-15 | Quellan Inc | Method and system for crosstalk cancellation |
| US7804760B2 (en) * | 2003-08-07 | 2010-09-28 | Quellan, Inc. | Method and system for signal emulation |
| KR101197810B1 (ko) | 2003-11-17 | 2012-11-05 | ？란 인코포레이티드 | 안테나 간섭 소거 시스템 및 방법 |
| US7616700B2 (en) * | 2003-12-22 | 2009-11-10 | Quellan, Inc. | Method and system for slicing a communication signal |
| US7725079B2 (en) * | 2004-12-14 | 2010-05-25 | Quellan, Inc. | Method and system for automatic control in an interference cancellation device |
| US7522883B2 (en) | 2004-12-14 | 2009-04-21 | Quellan, Inc. | Method and system for reducing signal interference |
| US7551670B2 (en) * | 2005-07-15 | 2009-06-23 | Git Japan, Inc. | UWB communication device and UWB communication method |
| WO2007127369A2 (en) * | 2006-04-26 | 2007-11-08 | Quellan, Inc. | Method and system for reducing radiated emissions from a communications channel |
| EP2434648A1 (de) * | 2010-09-25 | 2012-03-28 | ATLAS Elektronik GmbH | Codierer und Decodierer, Codierverfahren und Decodierverfahren sowie System aus Codierer und Decodierer |
| JP6741497B2 (ja) | 2016-07-01 | 2020-08-19 | ラピスセミコンダクタ株式会社 | 信号変換装置、処理装置、通信システムおよび信号変換方法 |
| CN106130637B (zh) * | 2016-07-26 | 2018-06-01 | 桂林电子科技大学 | 一种基于led的可见光通信系统和方法 |
| US11463288B2 (en) | 2021-06-14 | 2022-10-04 | Ultralogic 6G, Llc | Amplitude-variation encoding for high-density 5G/6G modulation |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2865018A (en) * | 1954-06-25 | 1958-12-16 | Raytheon Mfg Co | Intelligence transmission |
| US3281806A (en) * | 1962-12-21 | 1966-10-25 | Honeywell Inc | Pulse width modulation representation of paired binary digits |
| US4103234A (en) * | 1967-11-24 | 1978-07-25 | General Dynamics Corp. | System for transmission storage and/or multiplexing of information |
| US3792454A (en) * | 1972-01-03 | 1974-02-12 | Honeywell Inf Systems | Magnetic strorage system using alternate codes to reduce write current bias |
| US3920898A (en) * | 1974-05-30 | 1975-11-18 | Xerox Corp | Non-synchronous duobinary encoding |
| US3993862A (en) * | 1974-07-05 | 1976-11-23 | Lawrence Karr | Data compression |
| DE2530812B2 (de) * | 1975-07-10 | 1977-08-18 | Loewe Opta Gmbh, 1000 Berlin | Digitales impulsuebertragungsverfahren fuer eine infrarot-fernbedienung |
| JPS5261424A (en) * | 1975-11-17 | 1977-05-20 | Olympus Optical Co Ltd | Encode system |
| US4008390A (en) * | 1976-03-15 | 1977-02-15 | Bell Telephone Laboratories, Incorporated | Optical pulse transmission system |
| FR2361024A1 (fr) * | 1976-08-04 | 1978-03-03 | Cit Alcatel | Procede de codage par transitions d'informations binaires et dispositifs de codage et de decodage correspondants |
-
1977
- 1977-10-13 IT IT6927777A patent/IT1091439B/it active
-
1978
- 1978-10-05 FR FR7828450A patent/FR2406345A1/fr active Granted
- 1978-10-05 US US05/948,870 patent/US4201909A/en not_active Expired - Lifetime
- 1978-10-05 JP JP12211078A patent/JPS5461815A/ja active Granted
- 1978-10-06 GB GB7839673A patent/GB2006429B/en not_active Expired
- 1978-10-10 CA CA312,989A patent/CA1107822A/en not_active Expired
- 1978-10-11 DE DE2844293A patent/DE2844293C3/de not_active Expired
- 1978-10-12 NL NLAANVRAGE7810272,A patent/NL182268C/xx not_active IP Right Cessation
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01174257U (US07534539-20090519-C00280.png) * | 1988-05-31 | 1989-12-11 | ||
| JPH0424814U (US07534539-20090519-C00280.png) * | 1990-06-22 | 1992-02-27 |
Also Published As
| Publication number | Publication date |
|---|---|
| IT1091439B (it) | 1985-07-06 |
| JPS5461815A (en) | 1979-05-18 |
| DE2844293A1 (de) | 1979-04-19 |
| CA1107822A (en) | 1981-08-25 |
| NL182268B (nl) | 1987-09-01 |
| DE2844293C3 (de) | 1981-08-27 |
| FR2406345B1 (US07534539-20090519-C00280.png) | 1983-07-22 |
| FR2406345A1 (fr) | 1979-05-11 |
| NL7810272A (nl) | 1979-04-18 |
| DE2844293B2 (US07534539-20090519-C00280.png) | 1980-08-21 |
| NL182268C (nl) | 1988-02-01 |
| GB2006429A (en) | 1979-05-02 |
| US4201909A (en) | 1980-05-06 |
| GB2006429B (en) | 1982-03-24 |
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