DE3379767D1 - Optical communication - Google Patents
Optical communicationInfo
- Publication number
- DE3379767D1 DE3379767D1 DE8383304923T DE3379767T DE3379767D1 DE 3379767 D1 DE3379767 D1 DE 3379767D1 DE 8383304923 T DE8383304923 T DE 8383304923T DE 3379767 T DE3379767 T DE 3379767T DE 3379767 D1 DE3379767 D1 DE 3379767D1
- Authority
- DE
- Germany
- Prior art keywords
- optical communication
- optical
- communication
- 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
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J3/00—Time-division multiplex systems
- H04J3/16—Time-division multiplex systems in which the time allocation to individual channels within a transmission cycle is variable, e.g. to accommodate varying complexity of signals, to vary number of channels transmitted
- H04J3/1676—Time-division multiplex with pulse-position, pulse-interval, or pulse-width modulation
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/10—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/60—Receivers
- H04B10/66—Non-coherent receivers, e.g. using direct detection
- H04B10/69—Electrical arrangements in the receiver
- H04B10/697—Arrangements for reducing noise and distortion
- H04B10/6972—Arrangements for reducing noise and distortion using passive filtering
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B14/00—Transmission systems not characterised by the medium used for transmission
- H04B14/02—Transmission systems not characterised by the medium used for transmission characterised by the use of pulse modulation
- H04B14/026—Transmission systems not characterised by the medium used for transmission characterised by the use of pulse modulation using pulse time characteristics modulation, e.g. width, position, interval
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB8225007 | 1982-09-02 | ||
GB8233396 | 1982-11-23 |
Publications (1)
Publication Number | Publication Date |
---|---|
DE3379767D1 true DE3379767D1 (en) | 1989-06-01 |
Family
ID=26283720
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE8383304923T Expired DE3379767D1 (en) | 1982-09-02 | 1983-08-25 | Optical communication |
Country Status (4)
Country | Link |
---|---|
US (1) | US4584720A (de) |
EP (1) | EP0102815B1 (de) |
CA (1) | CA1230380A (de) |
DE (1) | DE3379767D1 (de) |
Families Citing this family (48)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2574948B1 (fr) * | 1984-12-14 | 1987-01-16 | Thomson Csf | Procede d'interrogation ami-ennemi et systeme utilisant ce procede |
GB2171873B (en) * | 1985-01-24 | 1989-01-11 | Sanden Corp | Data gathering system |
FR2620884B1 (fr) * | 1987-09-21 | 1994-04-15 | Apitel Sarl | Dispositif de transmission |
DE3732287A1 (de) * | 1987-09-25 | 1989-04-06 | Ant Nachrichtentech | Verfahren und schaltungsanordnung zum ableiten des worttaktes eines pulslagemodulierten signals |
US4959828A (en) * | 1988-05-31 | 1990-09-25 | Corporation Of The President Of The Church Of Jesus Christ Of Latter-Day Saints | Multi-channel infrared cableless communication system |
US5124991A (en) * | 1989-03-30 | 1992-06-23 | Photonics Corporation | Error correction for infrared data communication |
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. |
US5563728A (en) * | 1991-02-22 | 1996-10-08 | Allen; Richard C. | Infrared communication repeater architecture |
US5495358A (en) * | 1992-11-23 | 1996-02-27 | Hewlett-Packard Company | Optical transceiver with improved range and data communication rate |
SE500286C2 (sv) * | 1993-05-18 | 1994-05-30 | Televerket | Metod och anordning för att anordna avlyssningssäker optisk länk |
WO1995023461A1 (en) * | 1994-02-28 | 1995-08-31 | International Business Machines Corporation | Method and apparatus for optical wireless communication |
US5969839A (en) * | 1995-07-10 | 1999-10-19 | Fuji Electric Co., Ltd. | Optical communications device |
US5539513A (en) * | 1994-08-15 | 1996-07-23 | Laser Technology, Inc. | System and associated method for determining and transmitting positional data utilizing optical signals |
US5684871A (en) * | 1995-05-02 | 1997-11-04 | Apple Computer, Inc. | Method and apparatus for multi-mode infrared data transmission |
US5958081A (en) * | 1995-10-11 | 1999-09-28 | Ford Motor Company | Energy efficient remote control protocol with improved reliability |
DE19644174B4 (de) * | 1996-10-24 | 2005-03-31 | Ziegler, Horst, Prof. Dipl.-Phys. Dr. | Verfahren zur Übertragung von digitalen Signalen über eine optoelektronische Datenstrecke und Vorrichtung zu seiner Durchführung |
US6101011A (en) * | 1997-05-29 | 2000-08-08 | Ciena Corporation | Modulation format adjusting optical transponders |
JP3080907B2 (ja) * | 1997-07-22 | 2000-08-28 | 日本電気アイシーマイコンシステム株式会社 | 変復調方法および変復調装置 |
US6735398B1 (en) * | 2000-03-15 | 2004-05-11 | Hughes Electronics Corporation | Generating methods for single and multi-channel wideband optical analog pulse positioned waveforms |
US6466703B1 (en) | 2000-04-07 | 2002-10-15 | Hrl Laboratories, Llc | Method and apparatus for electro-optic delay generation of optical signals |
US6462860B1 (en) | 2000-06-05 | 2002-10-08 | Hrl Laboratories, Llc | Method and apparatus of detection of pulse position modulated optical signals |
US7173551B2 (en) | 2000-12-21 | 2007-02-06 | Quellan, Inc. | Increasing data throughput in optical fiber transmission systems |
US7068946B2 (en) * | 2001-01-23 | 2006-06-27 | At&T Corp. | Modulation scheme for tedons |
US7307569B2 (en) * | 2001-03-29 | 2007-12-11 | 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 |
ATE492076T1 (de) * | 2001-04-04 | 2011-01-15 | Quellan Inc | Verfahren und system zum decodieren von mehrpegelsignalen |
US20030030873A1 (en) * | 2001-05-09 | 2003-02-13 | Quellan, Inc. | High-speed adjustable multilevel light modulation |
US7212580B2 (en) * | 2002-02-15 | 2007-05-01 | Quellan, Inc. | Multi-level signal clock recovery technique |
WO2003077423A2 (en) | 2002-03-08 | 2003-09-18 | Quellan, Inc. | High speed analog-to-digital converter using a unique gray code having minimal bit transitions |
WO2003092237A1 (en) * | 2002-04-23 | 2003-11-06 | Quellan, Inc. | Combined ask/dpsk modulation system |
US7167913B2 (en) | 2002-06-05 | 2007-01-23 | Universal Electronics Inc. | System and method for managing communication links |
JP2004013681A (ja) * | 2002-06-10 | 2004-01-15 | Bosu & K Consulting Kk | 名刺情報管理システム |
AU2003256569A1 (en) | 2002-07-15 | 2004-02-02 | Quellan, Inc. | Adaptive noise filtering and equalization |
US7934144B2 (en) * | 2002-11-12 | 2011-04-26 | Quellan, Inc. | High-speed analog-to-digital conversion with improved robustness to timing uncertainty |
US7050388B2 (en) * | 2003-08-07 | 2006-05-23 | Quellan, Inc. | Method and system for crosstalk cancellation |
US7804760B2 (en) * | 2003-08-07 | 2010-09-28 | Quellan, Inc. | Method and system for signal emulation |
US7330304B2 (en) * | 2003-11-03 | 2008-02-12 | Hrl Laboratories, Llc | Method and apparatus for PPM demodulation using a semiconductor optical amplifier |
EP1687929B1 (de) * | 2003-11-17 | 2010-11-10 | Quellan, Inc. | Verfahren und system zur löschung von antennenstörungen |
US7616700B2 (en) * | 2003-12-22 | 2009-11-10 | Quellan, Inc. | Method and system for slicing a communication signal |
US7430376B1 (en) | 2004-11-29 | 2008-09-30 | Hrl Laboratories, Llc | All-optical delay generator for PPM communication systems based on a non-linear waveguide with a chirped DBR |
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 |
US7724792B2 (en) * | 2006-03-03 | 2010-05-25 | Mindspeed Technologies, Inc. | Driving laser diodes with immunity to temperature changes, aging, and other effects |
US9252983B2 (en) * | 2006-04-26 | 2016-02-02 | Intersil Americas LLC | Method and system for reducing radiated emissions from a communications channel |
US7693216B1 (en) | 2009-02-24 | 2010-04-06 | Daniel A. Katz | Modulating transmission timing for data communications |
IT1397584B1 (it) * | 2009-12-18 | 2013-01-16 | Eltek Spa | Dispositivo di monitoraggio di una ruota di un veicolo e relativo metodo di comunicazione. |
JP2017098531A (ja) * | 2015-11-12 | 2017-06-01 | 株式会社リコー | レーザー光発生装置、レーザー加工機、被加工物の生産方法 |
US10573344B2 (en) * | 2017-06-20 | 2020-02-25 | U.S.A. As Represented By The Administrator Of The National Aeronautics And Space Administration | Slot synthesis for high cardinality pulse position modulation |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3390334A (en) * | 1964-03-02 | 1968-06-25 | Hughes Aircraft Co | High power pulse time modulation communication system with explosive power amplification means |
US3727061A (en) * | 1970-07-06 | 1973-04-10 | Us Army | Pulse laser communication system |
US3956626A (en) * | 1973-06-14 | 1976-05-11 | Mcdonnell Douglas Corporation | Pulse quaternary communication means |
US3995231A (en) * | 1974-01-30 | 1976-11-30 | Harris-Intertype Corporation | Mode-locked cavity-dumped laser |
US4300236A (en) * | 1977-03-16 | 1981-11-10 | Lewis Security Systems Limited | Radio signalling systems |
DE2728496C2 (de) * | 1977-06-24 | 1985-11-28 | Loewe Opta Gmbh, 8640 Kronach | Fernbedienungseinrichtung |
US4136258A (en) * | 1977-07-11 | 1979-01-23 | Rockwell International Corporation | Transition encoding apparatus |
US4468746A (en) * | 1981-12-01 | 1984-08-28 | Cincinnati Electronics Corporation | Apparatus for determining interval between two events |
-
1983
- 1983-08-25 EP EP83304923A patent/EP0102815B1/de not_active Expired
- 1983-08-25 DE DE8383304923T patent/DE3379767D1/de not_active Expired
- 1983-08-30 US US06/527,813 patent/US4584720A/en not_active Expired - Lifetime
- 1983-09-01 CA CA000435908A patent/CA1230380A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
EP0102815A3 (en) | 1985-05-29 |
EP0102815A2 (de) | 1984-03-14 |
EP0102815B1 (de) | 1989-04-26 |
CA1230380A (en) | 1987-12-15 |
US4584720A (en) | 1986-04-22 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8364 | No opposition during term of opposition | ||
8339 | Ceased/non-payment of the annual fee |