JP5895236B2 - 光信号送信装置 - Google Patents
光信号送信装置 Download PDFInfo
- Publication number
- JP5895236B2 JP5895236B2 JP2011224940A JP2011224940A JP5895236B2 JP 5895236 B2 JP5895236 B2 JP 5895236B2 JP 2011224940 A JP2011224940 A JP 2011224940A JP 2011224940 A JP2011224940 A JP 2011224940A JP 5895236 B2 JP5895236 B2 JP 5895236B2
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- Japan
- Prior art keywords
- data
- transmission
- optical signal
- clock signal
- visible light
- Prior art date
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- Expired - Fee Related
Links
- 230000003287 optical effect Effects 0.000 title claims description 33
- 230000005540 biological transmission Effects 0.000 claims description 48
- 238000004891 communication Methods 0.000 claims description 22
- 230000008054 signal transmission Effects 0.000 claims description 9
- 238000001514 detection method Methods 0.000 claims description 3
- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000002123 temporal effect Effects 0.000 description 2
Images
Classifications
-
- 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
- H04B10/11—Arrangements specific to free-space transmission, i.e. transmission through air or vacuum
- H04B10/114—Indoor or close-range type systems
- H04B10/116—Visible light communication
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J3/00—Time-division multiplex systems
-
- 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
- H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
- H04L1/0006—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission format
- H04L1/0007—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission format by modifying the frame length
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Quality & Reliability (AREA)
- Optical Communication System (AREA)
- Synchronisation In Digital Transmission Systems (AREA)
Description
101 クロック信号発生部
103 CPU
105 LED駆動回路
107 LED
200 受信装置
201 光センサ
203 CPU
205 クロック信号発生部
Claims (4)
- デジタルデータを示す光信号の授受によって通信を行う光通信システムを構成する光信号送信装置であって、
送受信間におけるクロック信号の許容公差に基づいて、光信号を構成する各フレームのデータ長を算出により設定し、当該データ長の同じ内容のフレームが複数回連続した送信デジタルデータを生成する送信データ生成部と、
前記送信デジタルデータに応じた形態の光信号を出力するよう発光部を駆動する発光駆動部と、を備え、
前記送信データ生成部は、前記許容公差が±A/2%のとき、各フレームのデータ長を「(1/A)×100/2」の計算式から算出することを特徴とする光信号送信装置。 - 請求項1に記載の光信号送信装置であって、
前記送信データ生成部は、所定データ長のデータを前記設定したデータ長の2つのフレームに分割する際、前記所定データ長のデータの先頭ビットから前記設定したデータ長のデータと、前記所定データ長のデータの最終ビットから前記設定したデータ長のデータとに分割することを特徴とする光信号送信装置。 - 請求項1又は2に記載の光信号送信装置であって、
前記送信データ生成部は、誤り検出符号を含む送信デジタルデータを生成することを特徴とする光信号送信装置。 - 請求項1〜3のいずれか一項に記載の光信号送信装置であって、
前記光信号は可視光信号であることを特徴とする光信号送信装置。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2011224940A JP5895236B2 (ja) | 2011-10-12 | 2011-10-12 | 光信号送信装置 |
EP12187925.8A EP2582071B1 (en) | 2011-10-12 | 2012-10-10 | Optical Signal Transmitting Apparatus |
US13/649,512 US8861974B2 (en) | 2011-10-12 | 2012-10-11 | Optical signal transmitting apparatus |
CN201210384424.3A CN103051387B (zh) | 2011-10-12 | 2012-10-11 | 光信号发送设备 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2011224940A JP5895236B2 (ja) | 2011-10-12 | 2011-10-12 | 光信号送信装置 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2013085183A JP2013085183A (ja) | 2013-05-09 |
JP5895236B2 true JP5895236B2 (ja) | 2016-03-30 |
Family
ID=47355793
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2011224940A Expired - Fee Related JP5895236B2 (ja) | 2011-10-12 | 2011-10-12 | 光信号送信装置 |
Country Status (4)
Country | Link |
---|---|
US (1) | US8861974B2 (ja) |
EP (1) | EP2582071B1 (ja) |
JP (1) | JP5895236B2 (ja) |
CN (1) | CN103051387B (ja) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103560831B (zh) * | 2013-10-31 | 2016-03-02 | 华北水利水电大学 | 具有信息传输功能的照明设备及照明设备信息传输方法 |
US10958965B2 (en) | 2014-10-31 | 2021-03-23 | Telefonaktiebolaget Lm Ericsson (Publ) | Video stream synchronization |
US9456132B2 (en) | 2014-12-19 | 2016-09-27 | Semiconductor Components Industries, Llc | Image sensor system for detection and information processing based on user preferences |
CN105450301A (zh) * | 2015-12-23 | 2016-03-30 | 安阳工学院 | 一种短距led可见光传输装置 |
US11158187B2 (en) * | 2016-11-21 | 2021-10-26 | Koninklijke Philips N.V. | Remote-control device and user device using an identification signal |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH04325604A (ja) | 1991-04-25 | 1992-11-16 | Tokin Corp | 多孔質焼結体の製造方法 |
JPH0730523A (ja) * | 1993-06-25 | 1995-01-31 | Matsushita Electric Works Ltd | データ通信方法 |
US6778586B1 (en) * | 1998-02-17 | 2004-08-17 | Root, Inc. | Radio communication equipment and communication method |
US6445719B1 (en) * | 1998-08-28 | 2002-09-03 | Adtran Inc. | Method, system and apparatus for reducing synchronization and resynchronization times for systems with pulse stuffing |
US7277644B2 (en) * | 2003-06-13 | 2007-10-02 | The Regents Of The University Of California | Fade-resistant forward error correction method for free-space optical communications systems |
JP2006203669A (ja) * | 2005-01-21 | 2006-08-03 | Nakagawa Kenkyusho:Kk | 光通信方式 |
JP4325604B2 (ja) | 2005-09-30 | 2009-09-02 | 日本電気株式会社 | 可視光制御装置、可視光通信装置、可視光制御方法及びプログラム |
US20070242676A1 (en) * | 2006-04-13 | 2007-10-18 | Corrigent Systems Ltd. | Interface between a synchronous network and high-speed ethernet |
JP4790659B2 (ja) * | 2007-05-10 | 2011-10-12 | シャープ株式会社 | 送信システム、送信機器 |
-
2011
- 2011-10-12 JP JP2011224940A patent/JP5895236B2/ja not_active Expired - Fee Related
-
2012
- 2012-10-10 EP EP12187925.8A patent/EP2582071B1/en not_active Not-in-force
- 2012-10-11 US US13/649,512 patent/US8861974B2/en not_active Expired - Fee Related
- 2012-10-11 CN CN201210384424.3A patent/CN103051387B/zh not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
JP2013085183A (ja) | 2013-05-09 |
US20130094850A1 (en) | 2013-04-18 |
EP2582071B1 (en) | 2018-12-05 |
CN103051387A (zh) | 2013-04-17 |
US8861974B2 (en) | 2014-10-14 |
CN103051387B (zh) | 2016-08-10 |
EP2582071A1 (en) | 2013-04-17 |
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