[go: up one dir, main page]

WO2007032276A1 - Procédé d'attribution de données de transport et système de communication optique - Google Patents

Procédé d'attribution de données de transport et système de communication optique Download PDF

Info

Publication number
WO2007032276A1
WO2007032276A1 PCT/JP2006/317859 JP2006317859W WO2007032276A1 WO 2007032276 A1 WO2007032276 A1 WO 2007032276A1 JP 2006317859 W JP2006317859 W JP 2006317859W WO 2007032276 A1 WO2007032276 A1 WO 2007032276A1
Authority
WO
WIPO (PCT)
Prior art keywords
light
data
light receiving
light source
receiving element
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.)
Ceased
Application number
PCT/JP2006/317859
Other languages
English (en)
Japanese (ja)
Inventor
Masao Nakagawa
Shinichiro Haruyama
Satoshi Miyauchi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nakagawa Laboratories Inc
Original Assignee
Nakagawa Laboratories Inc
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Nakagawa Laboratories Inc filed Critical Nakagawa Laboratories Inc
Publication of WO2007032276A1 publication Critical patent/WO2007032276A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10F—INORGANIC SEMICONDUCTOR DEVICES SENSITIVE TO INFRARED RADIATION, LIGHT, ELECTROMAGNETIC RADIATION OF SHORTER WAVELENGTH OR CORPUSCULAR RADIATION
    • H10F55/00—Radiation-sensitive semiconductor devices covered by groups H10F10/00, H10F19/00 or H10F30/00 being structurally associated with electric light sources and electrically or optically coupled thereto
    • 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
    • H04B10/1141—One-way transmission
    • 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

Definitions

  • the present invention relates to a visible light communication technique using visible light generated as a communication medium by a lighting apparatus using LD, LED, or the like.
  • FIGS. 8 to 10 are explanatory diagrams showing an example of the relationship between each pixel of the image sensor and the image of the LED array projected onto the image sensor.
  • each pixel of the image sensor is indicated by a rectangle, and the image of the LED array is indicated by a circle.
  • multiple LED images may be projected onto one pixel of the image sensor. Therefore, if each LED transmits different data, the light from multiple LEDs will interfere, making it impossible to receive data.
  • Fig. 9 In the example shown in the figure, an example is shown in which the same data is transmitted for 2 X 2 LEDs. In Fig. 9, the same data is transmitted for the same pattern in the circle showing the LED image. In this case, the image of the LED that transmits the same data is projected on the upper left, upper right, lower left, lower right, and center of the 3 X 3 pixels shown in the image sensor. Can be received. However, for the other four pixels, images of LEDs that transmit different data are projected, and data cannot be received due to interference.
  • the same data is transmitted for the same pattern in the circle indicating the LED image, and as shown in FIG. If done, all pixels of the image sensor have the same received signal from the LEDs projected into each pixel, and each pixel can receive separate data in parallel without interference. Therefore, high-quality communication with minimal influence of interference is possible, and high-throughput parallel communication can be performed.
  • Patent Document 1 Japanese Patent Application Laid-Open No. 2004-64465
  • the present invention has been made in view of the above-described circumstances, and assigns data to be transmitted by each light source in a short time according to the correspondence relationship between the images of the light source group projected onto the light receiving element group. It is an object of the present invention to provide a transmission data allocation method capable of performing the above and an illumination light communication system to which such a transmission data allocation method is applied.
  • the present invention includes an optical communication system having transmission side means including a plurality of light sources and reception side means including a plurality of light receiving elements, and transmitting a plurality of light source forces and a plurality of data in parallel by emitted light.
  • the pilot signal is transmitted in order from each light source, and each pilot signal is received by each light receiving element, and the received power is held in correspondence with the light source that transmitted the pilot signal.
  • the light receiving element when the sum of k (k ⁇ l) number of received powers is D and the other sum is U, the light receiving element has a DU ratio larger than a predetermined value.
  • the light source corresponding to the maximum received power is assigned as data to be received by the light receiving element, and for light receiving elements having a DU ratio equal to or less than the predetermined value, k is increased and data is assigned. It is characterized by determining the DU ratio and assigning data to the light source, where D is the sum of the received power corresponding to the light source.
  • the data to be transmitted by each light source is allocated so that each light receiving element can receive data satisfactorily. Can do.
  • the data to be transmitted by each light source can be allocated so that high throughput can be obtained without depending on the correspondence between the light source and the light receiving element.
  • transmission data allocation can be determined simply by sending pilot signals from each light source, transmission can be done in a short time and with little effort. If the data can be assigned, there is an effect!
  • FIG. 1 is a block diagram showing an embodiment of the present invention.
  • 1 is a transmission side device
  • 2 is a reception side device
  • 11 is a light source
  • 12 is a light emission control unit
  • 21 is a light receiving element
  • 22 is a light reception processing unit.
  • the transmission-side device 1 includes a plurality of light sources 11 and a light emission control unit 12 that controls the light sources 11.
  • the light source 11 includes, for example, various types of light sources that can be switched at high speed, such as LEDs and LDs.
  • the light emission of these light sources 11 is controlled by the light emission control unit 12 every one or more. For example, it may be a light source for illumination.
  • the light emission control unit 12 controls light emission for each of the plurality of light sources 11 from one to plural. At this time, data can be transmitted by the light emitted from the light source 11 by performing blinking or light amount control at such a high speed that it cannot be visually recognized. In addition, parallel transmission is possible by changing the data to be transmitted for each light source 11. When assigning data to be transmitted to each light source 11, control is performed so that a pilot signal is transmitted (emitted) in order from each light source 11. In this example, since the allocation result can be received from the receiving side device 2, data is allocated to each light source 11 accordingly, and actual data is transmitted.
  • the receiving-side device 2 includes a plurality of light receiving elements 21 and a light receiving processing unit 22 that detects received power when light is received by the light receiving elements 21 and performs data reception processing.
  • the plurality of light receiving elements 21 are image sensors, and may be, for example, CMOS sensors for high-speed communication.
  • An optical system (not shown) such as a lens may be provided on the light receiving side of the light receiving element 21.
  • the light reception processing unit 22 detects the output signal force received light power from each light receiving element 21. During data communication, the signal is demodulated from the detected received light power to acquire data. Further, when assigning transmission data to each light source 11 of the transmission side device 1, the received light power when the pilot signal transmitted from each light source 11 of the transmission side device 1 is received is held. Then, the allocation of data to be transmitted is determined for each light source 11 of the transmission side device 1 by the process described later. Determined transmission data In this example, the assignment is returned from the reception side apparatus 2 to the transmission side apparatus 1. As a result, the transmission side device 1 can transmit data from each light source 11 according to the transmission data allocation for each light source 11 received from the reception side device 2.
  • FIG. 2 is a flowchart showing an example of transmission data assignment processing for each light source according to the embodiment of the present invention.
  • a pilot signal is emitted and transmitted in order from each light source 11 of the transmission side apparatus 1, and each received light source 11 is detected by each light receiving element 21 of the reception side apparatus 2 to detect and hold the received power of the light. .
  • the sum of the received powers of the k powers with the larger pilot signal power is D
  • the sum of the other received powers is U.
  • the ratio of U (hereinafter referred to as DU ratio) is obtained.
  • D indicates the signal power of the data
  • U indicates the power of the interference signal
  • the DU ratio is the desired signal to interference signal power ratio.
  • S35 to S38 are performed for each light receiving element 21.
  • the DU ratio is compared with a predetermined threshold value THR for one light receiving element 21. If the DU ratio is greater than the threshold value THR, it is determined that sufficient data can be received with the light from k light sources 11, and in S36, the same transmission data is assigned to k light sources 11 having high received power. Confirm this. Note that the light receiving element 21 for which the assignment of transmission data has been confirmed is excluded from the subsequent processing targets.
  • variable k is equal to or greater than a constant K indicating the maximum number of repetitions. Increase k by 1 and return to S34 to repeat the process.
  • the assignment process ends.
  • the transmission data allocation result to each light source 11 determined so far is sent to the transmission side apparatus 1, and the processing is completed.
  • the user may refer to the allocation result, and the transmission side device 1 may be manually set based on the allocation result.
  • configure the receiving device 2 so that the position and magnification are controlled so that the desired assignment result is obtained.
  • FIG. 3 is an explanatory diagram of an example of the relationship between the light receiving element and the image of the light source on the light receiving element and the received power after receiving the pilot signal.
  • FIG. 3 an image of nine light sources 11 is projected on four light receiving elements 21 and will be described.
  • Each light source 11 is denoted by L 1 to L 9 and its image is shown.
  • the respective light receiving elements 21 are denoted by symbols P1 to P4.
  • a pilot signal is transmitted from each light source 11, and the received power received by each light receiving element 21 is held.
  • the received power of 0.0005 is received at the light receiving element P1
  • the received power of 0.040 power is acquired at the light receiving element P3.
  • pilot signals are sequentially transmitted to the light sources L2 to L9, and the received power received by the respective light receiving elements P1 to P4 is held at that time.
  • the light receiving element P1 acquires the received power 0.005, 0.080, and 0.0003 from the light sources LI, L2, and L3.
  • received powers of 0.004 and 0.080 are obtained from the light sources L3 and L7, respectively.
  • the received power from the light sources LI, L4, L5, and L6 is 0.040, 0. 007, 0. 069, 0. 008 have been acquired.
  • the light receiving element P4 obtains the received power of 0.05, 0.070, 0.005 from the light sources L6, L8, L9. In FIG. 3, these received powers are rearranged in descending order until ⁇ .
  • the received power in each of the light receiving elements P1 to P4 when the pilot signals transmitted in order from the light sources L1 to L9 were received was obtained.
  • FIG. 4 is an explanatory diagram of a specific example of transmission data allocation by the first DU ratio.
  • S34 of Fig. 2 in each of the light receiving elements P1 to P4, one is extracted from the ones with large received power as D, and the sum of the other received power is set as U to obtain the DU ratio. Then, in S35, it is compared with a predetermined threshold value.
  • the predetermined threshold is 14 dB.
  • the received power 0.080 from the light source L2 is the maximum, so this is D.
  • the DU ratio is larger than 14 dB, it is determined that data D2 is assigned to the light source L2 in S36 of FIG. Note that the light receiving element P1 is excluded from the subsequent processing targets.
  • the received power 0.080 from the light source L7 is the maximum, so this is D.
  • the DU ratio is 14 dB or less.
  • the light source L3 has not yet been assigned. In this case, the first process for the light receiving element P2 is finished.
  • the DU ratio is 14 dB or less, and the allocation of the light source corresponding to the second largest received power is confirmed, so even with these light receiving elements, the first processing is performed. End. After increasing the variable k by 1 in S41 of Fig. 2, return to S34.
  • FIG. 5 is an explanatory diagram of a specific example of transmission data allocation by the second DU ratio.
  • each of the light receiving elements P2 to P4 has the two that have the highest received power.
  • Obtain the DU ratio by taking the sum of each and letting D be the sum of the other received power and U.
  • a predetermined threshold 14dB here.
  • the sum 0.094 of the received power from the light sources L7 and L3 is D.
  • the sum of other received power is 0, which is U.
  • the DU ratio is greater than 14 dB, it is determined in S36 of FIG. 2 that the same data is assigned to the light sources L7 and L3. In this example, it is determined that the data D7 is assigned to the light source L7 and the light source L3.
  • the DU ratio is 14 dB or less.
  • the assignment of the light source L6 is determined by the processing of the light receiving element P4. Therefore, in S38 of FIG. 2, the received power of the third largest light source L6 is included in the interference signal U in the subsequent processing. Then, after the second process is completed, the variable k is incremented by 1 in S41 of FIG. 2, and the process returns to S34.
  • FIG. 6 is an explanatory diagram of a specific example of transmission data allocation by the third DU ratio.
  • S34 of Fig. 2 in the light receiving element P3, three are extracted from the ones with large received power, the sum is set as D, and the sum of the other received power is set as U, and the DU ratio is obtained.
  • D is the sum of the received power from the light sources L5, LI, and L4, 0.136, and U is 0.008. Since the DU ratio in this case is greater than 14 dB, it is determined in S36 in FIG. 2 that the same data is assigned to the light sources L5, LI, and L4. In this example, data D5 is allocated for light sources L5, LI, and L4. It is decided to hit.
  • FIG. 7 is an explanatory diagram of a specific example of the allocation result.
  • data D2 is assigned to light source L2
  • data D7 is assigned to light sources L3 and L7
  • data D8 is assigned to light sources L6 and L8
  • data D5 is assigned to light sources LI, L4, and L5. You can decide to hit.
  • each light receiving element can reliably receive each data.
  • Such an allocation result can be transmitted from the receiving side device 2 to the transmitting side device 1, for example.
  • This transmission method is arbitrary.
  • light is transmitted by a light emitting element and a light receiving element, infrared rays or radio waves are used, or power line or communication is used. You may transmit via a cable.
  • the assignment result may be set manually in the transmission side apparatus 1 by referring to the assignment result.
  • the received power data of each light receiving element 21 when the pilot signal performed at S 31 in FIG. 2 is received is sent to the transmitting side device 1, and the processing after S 32 in FIG. You may go.
  • the light source L2 transmits data D2, the light sources L3 and L7 transmit data D7, and the light sources LI, L4, and L5 transmit data.
  • D5 is transmitted, and light sources L6 and L8 transmit data D8, so that data D2 is received by light receiving element P1, data D7 is received by light receiving element P2, data D5 is received by light receiving element P3, and data D8 is received by light receiving element P4. Can be received in parallel.
  • each light receiving element 21 is not affected by interference by different data and is predetermined in a state. Data can be received, parallel transmission can be performed efficiently, and high throughput can be obtained.
  • k sums are calculated for the respective light receiving elements 21 to be processed from the higher received power, and data that can be determined at that time. Are determined sequentially.
  • paying attention to one light receiving element select a direction with a large received power until the DU ratio reaches a predetermined value or more, and obtain the minimum k for which the DU ratio becomes a predetermined value or more.
  • the light source corresponding to the k received power It is also possible to configure the assignment so that the same data is transmitted for reception by the light receiving element. In this case, adjustment of data may be necessary later because there is a possibility that data allocation may overlap between adjacent light receiving elements.
  • FIG. 1 is a block diagram showing an embodiment of the present invention.
  • FIG. 2 is a flowchart showing an example of transmission data assignment processing for each light source in the embodiment of the present invention.
  • FIG. 3 is an explanatory diagram of an example of a relationship between a light receiving element and an image of a light source on the light receiving element and received power after receiving a pilot signal.
  • FIG. 4 is an explanatory diagram of a specific example of transmission data allocation by the first DU ratio.
  • FIG. 5 is an explanatory diagram of a specific example of transmission data allocation by the second DU ratio.
  • FIG. 6 is an explanatory diagram of a specific example of transmission data allocation by the third DU ratio.
  • FIG. 7 is an explanatory diagram of a specific example of an allocation result.
  • FIG. 8 is an explanatory diagram showing an example of a relationship between each pixel of the image sensor and an image of the LED array projected onto the image sensor.
  • FIG. 9 is an explanatory diagram showing an example of the relationship between each pixel of the image sensor and an image of the LED array when transmission data is fixedly assigned to the LED.
  • FIG. 10 is an explanatory diagram showing an example of the relationship between each pixel of the image sensor and an image of the LED array when transmission data is optimally assigned to the LED.

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Optical Communication System (AREA)

Abstract

Le problème à résoudre dans le cadre de la présente invention est de mettre à disposition un système de communication de lumière d'éclairage et un procédé d'attribution de données de transport en mesure d'attribuer, dans un bref lapse de temps, des données à transmettre par des sources lumineuses correspondant à des images d'un groupe de sources lumineuses projetées vers un groupe d'éléments de réception. La solution proposée consiste en ce que les sources lumineuses (11) d'un appareil terminal de transmission (1) émettent séquentiellement des ondes lumineuses pilotes, et les éléments de réception de lumière (21) d'un appareil terminal de réception (2) détectent et retiennent les puissances de réception des lumières respectives reçues en provenance des sources lumineuses (11). Pour les éléments de réception de lumière (21), un rapport D/U est déterminé, dans lequel D est une somme de k puissances de réception dans un ordre décroissant de valeur et U est une somme des autres puissances de réception. Si le rapport D/U est supérieur à une valeur prédéterminée, une attribution des mêmes données de transport est décidée pour les k sources lumineuses (11). En ce qui concerne les éléments de réception de lumière (21) pour lesquels le rapport D/U est égal ou inférieur à la valeur prédéterminée, le nombre k est augmenté et le rapport D/U est alors déterminé pour un essai répété. De cette manière, les données de transport peuvent être assignées aux sources lumineuses (11) de façon à ce que les éléments de réception de lumière (21) puissent recevoir les différentes données respectives.
PCT/JP2006/317859 2005-09-16 2006-09-08 Procédé d'attribution de données de transport et système de communication optique Ceased WO2007032276A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2005-270313 2005-09-16
JP2005270313A JP2007082098A (ja) 2005-09-16 2005-09-16 送信データ割り当て方法および光通信システム

Publications (1)

Publication Number Publication Date
WO2007032276A1 true WO2007032276A1 (fr) 2007-03-22

Family

ID=37864870

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2006/317859 Ceased WO2007032276A1 (fr) 2005-09-16 2006-09-08 Procédé d'attribution de données de transport et système de communication optique

Country Status (3)

Country Link
JP (1) JP2007082098A (fr)
TW (1) TW200729765A (fr)
WO (1) WO2007032276A1 (fr)

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2916112A1 (fr) * 2007-05-10 2008-11-14 Christophe Tiraby Procede et dispositif de localisation de source de communication, systeme de communication mobile utilisant un tel dispositif
US8823852B2 (en) 2012-05-24 2014-09-02 Panasonic Intellectual Property Corporation Of America Information communication method of obtaining information from a subject by demodulating data specified by a pattern of a bright line included in an obtained image
JP5607277B1 (ja) * 2012-12-27 2014-10-15 パナソニック インテレクチュアル プロパティ コーポレーション オブ アメリカ 情報通信方法
US8908074B2 (en) 2012-12-27 2014-12-09 Panasonic Intellectual Property Corporation Of America Information communication method
US8913144B2 (en) 2012-12-27 2014-12-16 Panasonic Intellectual Property Corporation Of America Information communication method
US8965216B2 (en) 2012-12-27 2015-02-24 Panasonic Intellectual Property Corporation Of America Information communication method
US8988574B2 (en) 2012-12-27 2015-03-24 Panasonic Intellectual Property Corporation Of America Information communication method for obtaining information using bright line image
US9008352B2 (en) 2012-12-27 2015-04-14 Panasonic Intellectual Property Corporation Of America Video display method
US9088363B2 (en) 2012-12-27 2015-07-21 Panasonic Intellectual Property Corporation Of America Information communication method
US9085927B2 (en) 2012-12-27 2015-07-21 Panasonic Intellectual Property Corporation Of America Information communication method
US9087349B2 (en) 2012-12-27 2015-07-21 Panasonic Intellectual Property Corporation Of America Information communication method
US9094120B2 (en) 2012-12-27 2015-07-28 Panasonic Intellectual Property Corporaton Of America Information communication method
US9262954B2 (en) 2012-12-27 2016-02-16 Panasonic Intellectual Property Corporation Of America Visible light communication signal display method and apparatus
US9608725B2 (en) 2012-12-27 2017-03-28 Panasonic Intellectual Property Corporation Of America Information processing program, reception program, and information processing apparatus
US9608727B2 (en) 2012-12-27 2017-03-28 Panasonic Intellectual Property Corporation Of America Switched pixel visible light transmitting method, apparatus and program
US9646568B2 (en) 2012-12-27 2017-05-09 Panasonic Intellectual Property Corporation Of America Display method
US10303945B2 (en) 2012-12-27 2019-05-28 Panasonic Intellectual Property Corporation Of America Display method and display apparatus
US10523876B2 (en) 2012-12-27 2019-12-31 Panasonic Intellectual Property Corporation Of America Information communication method
US10530486B2 (en) 2012-12-27 2020-01-07 Panasonic Intellectual Property Corporation Of America Transmitting method, transmitting apparatus, and program
US10951310B2 (en) 2012-12-27 2021-03-16 Panasonic Intellectual Property Corporation Of America Communication method, communication device, and transmitter

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008023583A1 (fr) * 2006-08-21 2008-02-28 Panasonic Corporation Dispositif de transmission spatiale optique utilisant un capteur d'image
JP5486179B2 (ja) 2008-11-25 2014-05-07 三星電子株式会社 送信装置、受信装置、信号送信方法、及び信号受信方法
JP6407101B2 (ja) * 2015-06-09 2018-10-17 三菱電機株式会社 光通信システム、光受信機、及び光受信機における調整方法
JP6618425B2 (ja) * 2016-06-06 2019-12-11 三菱電機株式会社 光通信システム、光受信機、及び信号光の像位置調整方法

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08237204A (ja) * 1995-02-24 1996-09-13 Nippon Telegr & Teleph Corp <Ntt> 光空間結線装置
JPH11252018A (ja) * 1998-03-03 1999-09-17 Sony Corp 通信装置
JP2001333005A (ja) * 2000-05-24 2001-11-30 Ntt Docomo Inc 光空間伝送システム、光空間伝送方法及び光空間伝送装置
JP2004064465A (ja) * 2002-07-30 2004-02-26 Sony Corp 光通信装置、光通信データ出力方法、および光通信データ解析方法、並びにコンピュータ・プログラム
JP2005006017A (ja) * 2003-06-11 2005-01-06 Toshiba Corp 光無線通信システムおよびこの光無線通信システムで用いられる光受信装置

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08237204A (ja) * 1995-02-24 1996-09-13 Nippon Telegr & Teleph Corp <Ntt> 光空間結線装置
JPH11252018A (ja) * 1998-03-03 1999-09-17 Sony Corp 通信装置
JP2001333005A (ja) * 2000-05-24 2001-11-30 Ntt Docomo Inc 光空間伝送システム、光空間伝送方法及び光空間伝送装置
JP2004064465A (ja) * 2002-07-30 2004-02-26 Sony Corp 光通信装置、光通信データ出力方法、および光通信データ解析方法、並びにコンピュータ・プログラム
JP2005006017A (ja) * 2003-06-11 2005-01-06 Toshiba Corp 光無線通信システムおよびこの光無線通信システムで用いられる光受信装置

Cited By (86)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008141914A1 (fr) * 2007-05-10 2008-11-27 Christophe Tiraby Procede et dispositif de localisation de source de communication, systeme de communication mobile utilisant un tel dispositif
FR2916112A1 (fr) * 2007-05-10 2008-11-14 Christophe Tiraby Procede et dispositif de localisation de source de communication, systeme de communication mobile utilisant un tel dispositif
US9083543B2 (en) 2012-05-24 2015-07-14 Panasonic Intellectual Property Corporation Of America Information communication method of obtaining information from a subject by demodulating data specified by a pattern of a bright line included in an obtained image
US8823852B2 (en) 2012-05-24 2014-09-02 Panasonic Intellectual Property Corporation Of America Information communication method of obtaining information from a subject by demodulating data specified by a pattern of a bright line included in an obtained image
US9456109B2 (en) 2012-05-24 2016-09-27 Panasonic Intellectual Property Corporation Of America Information communication method of obtaining information from a subject by demodulating data specified by a pattern of a bright line included in an obtained image
US9300845B2 (en) 2012-05-24 2016-03-29 Panasonic Intellectual Property Corporation Of America Information communication device for obtaining information from a subject by demodulating a bright line pattern included in an obtained image
US9166810B2 (en) 2012-05-24 2015-10-20 Panasonic Intellectual Property Corporation Of America Information communication device of obtaining information by demodulating a bright line pattern included in an image
US9143339B2 (en) 2012-05-24 2015-09-22 Panasonic Intellectual Property Corporation Of America Information communication device for obtaining information from image data by demodulating a bright line pattern appearing in the image data
US8994841B2 (en) 2012-05-24 2015-03-31 Panasonic Intellectual Property Corporation Of America Information communication method for obtaining information specified by stripe pattern of bright lines
US9083544B2 (en) 2012-05-24 2015-07-14 Panasonic Intellectual Property Corporation Of America Information communication method of obtaining information from a subject by demodulating data specified by a pattern of a bright line included in an obtained image
US10218914B2 (en) 2012-12-20 2019-02-26 Panasonic Intellectual Property Corporation Of America Information communication apparatus, method and recording medium using switchable normal mode and visible light communication mode
US9571191B2 (en) 2012-12-27 2017-02-14 Panasonic Intellectual Property Corporation Of America Information communication method
US9641766B2 (en) 2012-12-27 2017-05-02 Panasonic Intellectual Property Corporation Of America Information communication method
US9019412B2 (en) 2012-12-27 2015-04-28 Panasonic Intellectual Property Corporation Of America Information communication method for selecting between visible light communication mode and normal imaging mode
US9008352B2 (en) 2012-12-27 2015-04-14 Panasonic Intellectual Property Corporation Of America Video display method
US9088363B2 (en) 2012-12-27 2015-07-21 Panasonic Intellectual Property Corporation Of America Information communication method
US9085927B2 (en) 2012-12-27 2015-07-21 Panasonic Intellectual Property Corporation Of America Information communication method
US9088360B2 (en) 2012-12-27 2015-07-21 Panasonic Intellectual Property Corporation Of America Information communication method
US9087349B2 (en) 2012-12-27 2015-07-21 Panasonic Intellectual Property Corporation Of America Information communication method
US9088362B2 (en) 2012-12-27 2015-07-21 Panasonic Intellectual Property Corporation Of America Information communication method for obtaining information by demodulating bright line pattern included in an image
US9094120B2 (en) 2012-12-27 2015-07-28 Panasonic Intellectual Property Corporaton Of America Information communication method
US8994865B2 (en) 2012-12-27 2015-03-31 Panasonic Intellectual Property Corporation Of America Information communication method
US8988574B2 (en) 2012-12-27 2015-03-24 Panasonic Intellectual Property Corporation Of America Information communication method for obtaining information using bright line image
US9184838B2 (en) 2012-12-27 2015-11-10 Panasonic Intellectual Property Corporation Of America Information communication method for obtaining information using ID list and bright line image
US9203515B2 (en) 2012-12-27 2015-12-01 Panasonic Intellectual Property Corporation Of America Information communication method
US9247180B2 (en) 2012-12-27 2016-01-26 Panasonic Intellectual Property Corporation Of America Video display method using visible light communication image including stripe patterns having different pitches
US9252878B2 (en) 2012-12-27 2016-02-02 Panasonic Intellectual Property Corporation Of America Information communication method
US9258058B2 (en) 2012-12-27 2016-02-09 Panasonic Intellectual Property Corporation Of America Signal transmitting apparatus for transmitting information by bright line pattern in image
US9262954B2 (en) 2012-12-27 2016-02-16 Panasonic Intellectual Property Corporation Of America Visible light communication signal display method and apparatus
US9281895B2 (en) 2012-12-27 2016-03-08 Panasonic Intellectual Property Corporation Of America Information communication method
US8965216B2 (en) 2012-12-27 2015-02-24 Panasonic Intellectual Property Corporation Of America Information communication method
US9331779B2 (en) 2012-12-27 2016-05-03 Panasonic Intellectual Property Corporation Of America Information communication method for obtaining information using ID list and bright line image
US9341014B2 (en) 2012-12-27 2016-05-17 Panasonic Intellectual Property Corporation Of America Information communication method using change in luminance
US9380227B2 (en) 2012-12-27 2016-06-28 Panasonic Intellectual Property Corporation Of America Information communication method for obtaining information using bright line image
US9407368B2 (en) 2012-12-27 2016-08-02 Panasonic Intellectual Property Corporation Of America Information communication method
US9450672B2 (en) 2012-12-27 2016-09-20 Panasonic Intellectual Property Corporation Of America Information communication method of transmitting a signal using change in luminance
US8913144B2 (en) 2012-12-27 2014-12-16 Panasonic Intellectual Property Corporation Of America Information communication method
US9462173B2 (en) 2012-12-27 2016-10-04 Panasonic Intellectual Property Corporation Of America Information communication method
US9467225B2 (en) 2012-12-27 2016-10-11 Panasonic Intellectual Property Corporation Of America Information communication method
US9515731B2 (en) 2012-12-27 2016-12-06 Panasonic Intellectual Property Corporation Of America Information communication method
US9560284B2 (en) 2012-12-27 2017-01-31 Panasonic Intellectual Property Corporation Of America Information communication method for obtaining information specified by striped pattern of bright lines
US9564970B2 (en) 2012-12-27 2017-02-07 Panasonic Intellectual Property Corporation Of America Information communication method for obtaining information using ID list and bright line image
US8908074B2 (en) 2012-12-27 2014-12-09 Panasonic Intellectual Property Corporation Of America Information communication method
US9591232B2 (en) 2012-12-27 2017-03-07 Panasonic Intellectual Property Corporation Of America Information communication method
US9608725B2 (en) 2012-12-27 2017-03-28 Panasonic Intellectual Property Corporation Of America Information processing program, reception program, and information processing apparatus
US9608727B2 (en) 2012-12-27 2017-03-28 Panasonic Intellectual Property Corporation Of America Switched pixel visible light transmitting method, apparatus and program
US9613596B2 (en) 2012-12-27 2017-04-04 Panasonic Intellectual Property Corporation Of America Video display method using visible light communication image including stripe patterns having different pitches
US9635278B2 (en) 2012-12-27 2017-04-25 Panasonic Intellectual Property Corporation Of America Information communication method for obtaining information specified by striped pattern of bright lines
US9030585B2 (en) 2012-12-27 2015-05-12 Panasonic Intellectual Property Corporation Of America Information communication method for obtaining information by demodulating bright line pattern included in image
US9646568B2 (en) 2012-12-27 2017-05-09 Panasonic Intellectual Property Corporation Of America Display method
US9756255B2 (en) 2012-12-27 2017-09-05 Panasonic Intellectual Property Corporation Of America Information communication method
US9768869B2 (en) 2012-12-27 2017-09-19 Panasonic Intellectual Property Corporation Of America Information communication method
US9794489B2 (en) 2012-12-27 2017-10-17 Panasonic Intellectual Property Corporation Of America Information communication method
US9859980B2 (en) 2012-12-27 2018-01-02 Panasonic Intellectual Property Corporation Of America Information processing program, reception program, and information processing apparatus
US9918016B2 (en) 2012-12-27 2018-03-13 Panasonic Intellectual Property Corporation Of America Information communication apparatus, method, and recording medium using switchable normal mode and visible light communication mode
US9998220B2 (en) 2012-12-27 2018-06-12 Panasonic Intellectual Property Corporation Of America Transmitting method, transmitting apparatus, and program
US10051194B2 (en) 2012-12-27 2018-08-14 Panasonic Intellectual Property Corporation Of America Information communication method
US10148354B2 (en) 2012-12-27 2018-12-04 Panasonic Intellectual Property Corporation Of America Luminance change information communication method
US10165192B2 (en) 2012-12-27 2018-12-25 Panasonic Intellectual Property Corporation Of America Information communication method
US10205887B2 (en) 2012-12-27 2019-02-12 Panasonic Intellectual Property Corporation Of America Information communication method
JP5607277B1 (ja) * 2012-12-27 2014-10-15 パナソニック インテレクチュアル プロパティ コーポレーション オブ アメリカ 情報通信方法
US10225014B2 (en) 2012-12-27 2019-03-05 Panasonic Intellectual Property Corporation Of America Information communication method for obtaining information using ID list and bright line image
US10303945B2 (en) 2012-12-27 2019-05-28 Panasonic Intellectual Property Corporation Of America Display method and display apparatus
US10334177B2 (en) 2012-12-27 2019-06-25 Panasonic Intellectual Property Corporation Of America Information communication apparatus, method, and recording medium using switchable normal mode and visible light communication mode
US10354599B2 (en) 2012-12-27 2019-07-16 Panasonic Intellectual Property Corporation Of America Display method
US10361780B2 (en) 2012-12-27 2019-07-23 Panasonic Intellectual Property Corporation Of America Information processing program, reception program, and information processing apparatus
US10368006B2 (en) 2012-12-27 2019-07-30 Panasonic Intellectual Property Corporation Of America Information communication method
US10368005B2 (en) 2012-12-27 2019-07-30 Panasonic Intellectual Property Corporation Of America Information communication method
US10447390B2 (en) 2012-12-27 2019-10-15 Panasonic Intellectual Property Corporation Of America Luminance change information communication method
US10455161B2 (en) 2012-12-27 2019-10-22 Panasonic Intellectual Property Corporation Of America Information communication method
US10516832B2 (en) 2012-12-27 2019-12-24 Panasonic Intellectual Property Corporation Of America Information communication method
US10523876B2 (en) 2012-12-27 2019-12-31 Panasonic Intellectual Property Corporation Of America Information communication method
US10521668B2 (en) 2012-12-27 2019-12-31 Panasonic Intellectual Property Corporation Of America Display method and display apparatus
US10531010B2 (en) 2012-12-27 2020-01-07 Panasonic Intellectual Property Corporation Of America Information communication method
US10531009B2 (en) 2012-12-27 2020-01-07 Panasonic Intellectual Property Corporation Of America Information communication method
US10530486B2 (en) 2012-12-27 2020-01-07 Panasonic Intellectual Property Corporation Of America Transmitting method, transmitting apparatus, and program
US10616496B2 (en) 2012-12-27 2020-04-07 Panasonic Intellectual Property Corporation Of America Information communication method
US10638051B2 (en) 2012-12-27 2020-04-28 Panasonic Intellectual Property Corporation Of America Information communication method
US10666871B2 (en) 2012-12-27 2020-05-26 Panasonic Intellectual Property Corporation Of America Information communication method
US10742891B2 (en) 2012-12-27 2020-08-11 Panasonic Intellectual Property Corporation Of America Information communication method
US10887528B2 (en) 2012-12-27 2021-01-05 Panasonic Intellectual Property Corporation Of America Information communication method
US10951310B2 (en) 2012-12-27 2021-03-16 Panasonic Intellectual Property Corporation Of America Communication method, communication device, and transmitter
US11165967B2 (en) 2012-12-27 2021-11-02 Panasonic Intellectual Property Corporation Of America Information communication method
US11490025B2 (en) 2012-12-27 2022-11-01 Panasonic Intellectual Property Corporation Of America Information communication method
US11659284B2 (en) 2012-12-27 2023-05-23 Panasonic Intellectual Property Corporation Of America Information communication method
US12088923B2 (en) 2012-12-27 2024-09-10 Panasonic Intellectual Property Corporation Of America Information communication method

Also Published As

Publication number Publication date
TW200729765A (en) 2007-08-01
JP2007082098A (ja) 2007-03-29

Similar Documents

Publication Publication Date Title
WO2007032276A1 (fr) Procédé d&#39;attribution de données de transport et système de communication optique
JP4981053B2 (ja) イメージセンサを用いた光空間伝送装置
US9281894B2 (en) Apparatus and method for generating visible signal according to amount of data transmission in visible light communication system
JP2008252466A (ja) 光通信システム、送信装置および受信装置
EP3092731B1 (fr) Transmission de données à un groupement de capteurs à obturateur déroulant par l&#39;intermédiaire d&#39;un groupement d&#39;émetteurs de lumière
KR20160138492A (ko) 광 기반 통신에서 래스터 라인 정렬을 위한 기술들
CN101232327A (zh) 可见光空分多址多路通信系统
JP7113261B2 (ja) 受信装置、プログラム、送信装置、発光装置、及び通信システム
KR101909552B1 (ko) 3d 스캐너 및 3d 스캔 방법
CN105359431B (zh) 定向光通信
US9130674B2 (en) Coded-light detection system including a camera, light sensor and augmented information display
JP2007295490A (ja) 可視光通信装置および可視光受信方法
Hassan et al. Impact of camera lens aperture and the light source size on optical camera communications
KR101466954B1 (ko) Ｌｅｄ 가시광 통신 시스템 및 그 통신방법
KR101999457B1 (ko) 광학 카메라 통신을 이용하는 위치 추정 방법 및 장치
JP2016024576A (ja) 送信装置及び情報伝送方法
CN113728562B (zh) 第一模块与第二模块之间的数据传输方法以及实施该方法的具有移动装置的设施
Nguyen et al. Enhanced Bit-Rate Performance for Visible Light Communication Systems Between Led and Mobile Camera
Haider et al. Vehicular communication using 5G
KR20180046388A (ko) 광학 카메라 통신을 이용하는 포인팅 방법 및 장치
CN114337817B (zh) 一种基于光通信的传输方法、装置及通信设备
Herrnsdorf et al. Control of automated systems with a structured light illumination source
WO2024062617A1 (fr) Système de communication optique
US9948392B2 (en) Apparatus and method for generating visible signal according to amount of data transmission in visible light communication system
CN119654814A (zh) 用于确定适当的行扫描频率的方法和用于光传输的系统

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application
NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 06797713

Country of ref document: EP

Kind code of ref document: A1