| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 398128000 | Transceivers | 52 |
| 20080247760 | SYSTEM FOR WIRELESS ALARM REPORTING - A system for wireless alarm reporting is disclosed. A system that incorporates teachings of the present disclosure may include, for example, a network interface device (NID) having a translator element to convert an optical signal supplied by a communication system to one or more electrical signals supplied to one or more communication devices served by the NID, and a wireless transmitter to transmit a notice to a portable alerting device responsive to a UPS asserting an alarm. Additional embodiments are disclosed. | 10-09-2008 |
| 20080267634 | 9b10b Code for Passive Optical Networks - An apparatus comprising at least one processor configured to implement a method comprising receiving an incoming data stream, converting the incoming data stream into an outgoing data stream comprising a plurality of ten-bit codepoints each comprising nine data bits, and transmitting the outgoing data stream. Also disclosed is an apparatus comprising a nine-bit data block/ten-bit codepoint converter, an optical receiver coupled to the nine-bit data block/ten-bit codepoint converter, and an optical transmitter coupled to the nine-bit data block/ten-bit codepoint converter. | 10-30-2008 |
| 20080292320 | LED LIGHT GLOBAL POSITIONING AND ROUTING COMMUNICATION SYSTEM - An LED light and communication system includes at least one optical transceiver, the optical transceiver including a light support and a processor. The light support has a plurality of light emitting diodes and at least one photodetector attached thereto. The processor is in communication with the light emitting diodes and the at least one photodetector, where the processor is constructed and arranged to illuminate at least one of the light emitting diodes to generate a light signal which in turn includes at least one embedded data packet. The at least one embedded data packet communicates global positioning system (GPS) location information. | 11-27-2008 |
| 20080317473 | FREE-SPACE OPTICAL COMMUNICATION DEVICE - A free-space optical communication device includes a photodetector element, which receives a communication signal containing multiple infrared light signals respectively representing different information and converts the communication signal to an electrical signal by way of electro-optical conversion, and a signal selection unit, which receives the electrical signal from the photodetector element as input, extracts respective signals corresponding to the infrared light signals from this electrical signal, and individually outputs the electrical signal and the signals corresponding to the infrared light signals. | 12-25-2008 |
| 20090067846 | System and Method for Pre-Configuring and Authenticating Data Communication Links - An electronic device includes a data processor and data communication mechanism for: (a) transmitting, via an optical link, configuration and authentication requests/information for a second data communication link to an external device; and (b) transmitting other content data via the separate, second data communication link that is configured using the configuration data transmitted on the optical link. Data communication on the optical link is provided via modulated optical pulses from an illumination light source of the electronic device. The light source is selectively utilized for illuminating a component in the electronic device and for transmitting configuration/authentication data via optical pulses. An optical receiver also receives optically transmitted configuration/acknowledgement data from the external device. | 03-12-2009 |
| 20090067847 | Remote Control System - A quick selection of a depression key provided with a remote controller is impeded, so that controllable characteristics of the remote controller are deteriorated, and a lifetime of a cell provided on the side of the remote controller is reduced in order to acquire transport motional information. | 03-12-2009 |
| 20090136232 | INFRARED COMMUNICATION APPARATUS AND INFRARED COMMUNICATION METHOD - An infrared communication apparatus and method enabling data communication with a receiving device, regardless of a protocol with which the receiving device is compatible. A transmitting unit transmits a first packet to inquire whether a receiving device is compatible with a first protocol and transmits a second packet to inquire whether the receiving device is compatible with a second protocol, to the receiving device at least once, and transmits a plurality of third packets to inquire whether the receiving device is compatible with a third protocol, to the receiving device. A receiving unit receives a response packet indicating a protocol with which the receiving device is compatible, from the receiving device having received the first packet, the second packet, and the plurality of third packets. A data transmitting unit transmits data to the receiving device, based on the protocol indicated by the response packet received by the receiving unit. | 05-28-2009 |
| 20090136233 | OPTICAL TRANSMISSION SYSTEM AND OPTICAL NODE - Where an integrated monitoring and controlling unit is to control an optical add-drop unit so as to cause transmit signals from the optical transceiver of a first optical node to be received by the optical transceivers of plural different optical nodes, this purpose can be achieved by an optical transmission system provided with an alarm inhibiting device that can inhibit the optical transceiver, which is a source of transmission, from issuing any unexpected alarm. | 05-28-2009 |
| 20090175625 | OPTICALLY CONNECTED SYSTEM FOR EXCHANGING DATA AMONG INDUSTRIAL AUTOMATION DEVICES - An optically-connected system is disclosed for exchanging data among industrial automation devices, that is composed of a plurality of connection modules, where each module comprises at least two pairs of optical transmitters and receivers on the main side, and one optical receiver on the opposing main side, that are opposite with respect to another pair of transmitters and receivers in a following module; and where each one of the transmitters and receivers is adapted to communicate with industrial automation devices to cooperate for exchanging data between modules, sending one interrogation signal requesting an identity of the module and the receiver is adapted to send to each corresponding response signal containing characteristics of the receiver. | 07-09-2009 |
| 20090180780 | APPARATUS AND METHOD FOR TRANSMITTING DATA IN WIRELESS VISIBLE LIGHT COMMUNICATION SYSTEM - Disclosed is a method for transmitting data in a wireless visible light communication system, the method including the steps of transmitting a pilot signal for obtaining channel state information according to each channel from a transmitter to a receiver, and transmitting a pilot response signal containing channel state information according to each channel from the receiver to the transmitter; controlling, by the transmitter, a data rate according to the pilot response signal, transmitting, by the transmitter, data to the receiver, with data rate information inserted into a header and controlling, by the receiver, a data rate according to each channel by making reference to data included in the header information. | 07-16-2009 |
| 20090214219 | Electronic apparatus - An electronic apparatus includes a housing that has a first concave section, a first emission unit that emits a laser beam into the first concave section, and a first modulator that modulates the laser beam emitted from the first emission unit in accordance with transmission information. The first emission unit is disposed so as not to emit at least a direct beam of the emitted laser beam to the outside of the first concave section. | 08-27-2009 |
| 20090245805 | System and Method for Communicating Wireless Data Utilizing a Passive Optical Network - In one embodiment, a method for providing wireless communications utilizing a passive optical network (PON) is disclosed. The method includes receiving, at a PON, downstream packets from a base station destined for a mobile station, and transmitting the downstream packets to wireless transceivers associated with PON. The method also includes receiving, at the first wireless transceiver communicatively coupled to a first optical network terminal (ONT), the downstream packets from the first ONT and transmitting a first wireless signal comprising the downstream packets to a first cell. The method also includes receiving, at a second wireless transceiver communicatively coupled to a second ONT, the downstream packets from the second ONT and transmitting a second wireless signal comprising the downstream packets to a second cell. | 10-01-2009 |
| 20090310973 | Electroluminescent Emission Device for Optical Transmission in Free Space - The invention relates to a transmitting device for transmission through space, using electromagnetic waves of the infrared and/or visible and/or ultraviolet bands produced by one or several diodes producing electroluminescent light. | 12-17-2009 |
| 20100061733 | FIELD DEVICE CONFIGURED FOR WIRELESS DATA COMMUNICATION - Field devices comprising a transmitter and/or receiver for wireless data communication are provided. The energy available for wireless data communication in data transmitting or data receiving field devices is evaluated prior to activation of the transmitter and/or receiver of the field device. | 03-11-2010 |
| 20100061734 | Optical communication device, method and system - Exemplary optical communication devices are described which, in certain embodiments, derive power optically from and communicate optically to a reading device. The communication devices may also receive data from modulated light from the reading device to achieve a bi-directional optical communication link between the self-powered optical communication device and the reading device. In some embodiments, the communication device is powered by ambient light, such as sunlight, captures data from a sensor, and communicates the stored data some time later to a reading device. In some embodiments, the communication device is powered locally and communicates through air, optical fiber, or other medium with another communication device. | 03-11-2010 |
| 20100142966 | METHOD AND APPARATUS FOR ENHANCED FREE SPACE OPTICAL COMMUNICATION IN AN AVIATION ENVIRONMENT - A free space optical communications link is established, for example, between a commercial aircraft and an airport ground terminal unit, the link being asymmetric in the sense that a downlink to the aircraft has a much higher bandwidth than the reverse link from the aircraft so that the system is adapted for quickly loading large amounts of data (e.g., in-flight entertainment) onto the aircraft while still providing enough bandwidth for the lesser amounts of data (e.g., maintenance data) required to be transmitted from the aircraft to ground. Such adaptation provides significant benefits over standard, commercially available, free space optical communications systems. For example, equipment on the aircraft can be much smaller and lighter than ground unit equipment; and the communications link can allow for greater uncertainty in the alignment of the optical transceivers than do current free space optical communication systems and can allow for operation in harsher environmental conditions. | 06-10-2010 |
| 20110020007 | INTER-TRANSCEIVER MODULE COMMUNICATION FOR OPTIMIZATION OF LINK BETWEEN TRANSCEIVERS - Two or more optical transceivers coupled to each other by an optical link to optimize communication over the optical link. A first transceiver generates electrical data that represents an operational parameter for optimization. The transceiver then converts the electrical data into an optical signal and transmits the optical signal over the optical link to a second transceiver. The second transceiver recovers the electrical data from the optical signal and uses the recovered electrical data to change characteristics of the optical signal transmitted by the second transceiver. | 01-27-2011 |
| 20110164881 | OPTICAL CLOCK RATE NEGOTIATION FOR SUPPORTING ASYMMETRIC CLOCK RATES FOR VISIBLE LIGHT COMMUNICATION - A method and apparatus conduct an optical clock rate negotiation to support asymmetric clock rates for visible light communication (VLC) in a VLC device. A first frame that includes a receiver clock rate supported by a first VLC device is transmitted at a predetermined clock rate. A response frame that includes a receiver clock rate supported by a second VLC device is received from the second VLC device. A transmission clock rate of the first VLC device is selected based on the response frame from the second VLC device. Subsequent frames for data communication are transmitted to the second VLC device at the selected transmission clock rate of the first device. Alternatively, when conducting optical clock negotiation in the PHY layer, multiple clock rates are supported within a single frame. | 07-07-2011 |
| 20110229144 | WIRELESS REMOTE - Various embodiments include apparatus, systems, and methods including an apparatus comprising a remote operable to receive a non-radio frequency beacon signal, the non-radio frequency beacon signal transmitted within and contained substantially within an approximate line-of-sight transmission space, the non-radio frequency beacon signal including at least one channel information portion, wherein the channel information portion includes information indicating a radio frequency, the remote operable to establish bi-directional communications using the radio frequency designated by the at least one channel information portion. | 09-22-2011 |
| 20110286749 | RELIABLE COMMUNICATIONS VIA FREE SPACE OPTICS USING MULTIPLE DIVERGENCE BEAMS - A method of enhancing FSO (Free Space Optics) communications is disclosed including using dual or multiple beam divergence rates to increase the reliability of detection of optically received signals by transmitting the same information signal via multiple transmitters, each transmitter transmitting the information signal with a divergence rate different from the other transmitters. Using multiple divergence rates provides sufficient beam and/or signal density for reliable detection at the receiving end while also maintaining beam alignment. Active tracking of beams is improved by reducing operating frequency thresholds, and thus, system cost, needed for tracking the beam. | 11-24-2011 |
| 20120045215 | MOBILE TERMINAL, SERVER AND COMMUNICATION METHOD - Disclosed herein are a mobile terminal and server and a communication method. In an exemplary embodiment, a mobile terminal includes a light reception unit that receive visible light; a communication unit that performs communication using the visible light received by the light reception unit; and a control unit that controls a network to be formed by transmitting/receiving information to/from one or more other mobile terminals using the same light source through the communication unit. | 02-23-2012 |
| 20120148253 | APPARATUS AND METHOD FOR PROVIDING DATA EXCHANGE SERVICE - Disclosed is an interface method for exchanging data among information appliances by using optical communications including visible light and information appliances supporting the same. The present invention projects a screen providing a data exchange service through a first information appliance, determines whether at least one second information appliance is positioned on the projected screen, and controls an optical communication direction of a first information appliance to exchange data with the second information appliance when the second information appliance is positioned on the projected screen so as to exchange data between the first information appliance and the second information appliance. | 06-14-2012 |
| 20120155885 | RACK TO RACK OPTICAL COMMUNICATION - In some embodiments a light transceiver is associated with a computing rack and is adapted to transmit and/or receive one or more light beams via air to and/or from a second light transceiver associated with a second computing rack to communicate information between the computing rack and the second computing rack. Other embodiments are described and claimed. | 06-21-2012 |
| 20120224860 | METHOD AND DEVICE FOR DETERMINING OUTPUT OF VISIBLE FRAME IN VISIBLE LIGHT COMMUNICATION SYSTEM - A method and device for determining an output of a visible frame in at Visible Light Communication (VLC) device are provided. A first VLC device determines whether to permit a second VLC device to generate visible frames, and transmits, to the second VLC device, visible frame information indicating whether the second VLC device is permitted to generate the visible frames. | 09-06-2012 |
| 20120251123 | LED LIGHT GLOBAL POSITIONING AND ROUTING COMMUNICATION SYSTEM - An LED light and communication system includes at least one optical transceiver, the optical transceiver including a light support and a processor. The light support has a plurality of light emitting diodes and at least one photodetector attached thereto. The processor is in communication with the light emitting diodes and the at least one photodetector, where the processor is constructed and arranged to illuminate at least one of the light emitting diodes to generate a light signal which in turn includes at least one embedded data packet. The at least one embedded data packet communicates global positioning system (GPS) location information. | 10-04-2012 |
| 20120275795 | SYSTEM AND METHOD OF WIRELESS OPTICAL COMMUNICATION - Systems, methods, and a vehicle are disclosed to enable wireless optical communications. A wireless optical transceiver includes transmitter light source configured to transmit a first optical signal at a first wavelength via a first ball lens to generate a distributed first optical signal. The distributed first optical signal is configured to be received by a remote receiver via a first line-of-sight transmission. A detector is configured to receive a focused second optical signal at a second wavelength via a second ball lens. A controller is operably coupled to the light source and to the detector. The controller is configured to receive outgoing data and to generate a first electrical signal configured to modulate the first optical signal to transmit the outgoing data. The controller also is configured to receive a second electrical signal from the detector and to demodulate the second electrical signal to generate incoming data. | 11-01-2012 |
| 20130058659 | PERIPHERAL DEVICE, INFORMATION PROCESSING SYSTEM, AND METHOD FOR CONNECTING THE PERIPHERAL DEVICE - An example of peripheral device adds a predetermined function to a mobile device having an infrared communication function. The peripheral device includes an additional function unit, an infrared communication unit, and a support unit. The additional function unit has the predetermined function. The infrared communication unit is capable of performing infrared communication with the mobile device. The support unit detachably supports the mobile device so that a light emitting/receiving unit for infrared light of the mobile device is positioned so as to be capable of transmitting or receiving infrared light to or from the infrared communication unit. | 03-07-2013 |
| 20130202309 | METHOD OF PERFORMING HANDOVER IN WIRELESS OPTICAL COMMUNICATION AND MOBILE STATION USING THE SAME - In a wireless optical communication system, while a mobile station including a wireless optical transmitting/receiving apparatus, i.e., an optical mobile station (OMS), is mounted in a moving object and moves, the mobile station performs handover from a previous optical base station (OBS) to a new OBS. Here, the mobile station may include at least one OMS, and when the mobile station includes two OMSs, soft handover is performed, and when the mobile station includes one OMS, hard handover is performed. | 08-08-2013 |
| 20130202310 | Modulation for coded light transmission - Coded light has been proposed to enable advanced control of light sources and transmit information using light sources. Sequences of channel symbols to drive the light source are determined from sequences of source symbols such that no visible flicker is present in coded light emitted by the light sources. Each source symbol is mapped to a composite channel symbol comprising at least one first channel symbol which may be identical to the current source symbol and at least one second channel symbol which may be a function of the current source symbol and at least one future and/or past source symbol. | 08-08-2013 |
| 20140023378 | VISIBLE LIGHT COMMUNICATION METHOD IN AN INFORMATION DISPLAY DEVICE HAVING AN LED BACKLIGHT UNIT, AND INFORMATION DISPLAY DEVICE FOR THE METHOD - Proposed is a method for providing additional information to a mobile communication terminal by means of visible light communication in an information display device having an LED backlight unit. For this purpose, the method of the present invention comprises the steps of: receiving, from a mobile communication terminal, a request for additional information on an object in a content image when a content image is being displayed on a screen of an information display device; determining whether or not there exists additional information corresponding to the request; and controlling, if said additional information does exist, the light emission of the LED backlight unit so as to transmit said additional information in the form of visible light to the mobile communication terminal. Further, according to the present invention, it is possible to provide various additional information corresponding to the request from the mobile communication terminal. | 01-23-2014 |
| 20140037296 | INFORMATION COMMUNICATION DEVICE - An information communication method includes: setting an exposure time of an image sensor to less than or equal to 1/2000 second so that, in an image obtained by capturing a subject by the image sensor, a stripe bright line parallel to a plurality of exposure lines included in the image sensor appears according to a change in luminance of the subject; obtaining the image including the stripe bright line parallel to the plurality of exposure lines by, using the set exposure time, starting exposure sequentially for the plurality of exposure lines each at a different time; and obtaining information by demodulating data according to, in a pattern of the bright line included in the obtained image, a brightness change in a direction perpendicular to the plurality of exposure lines. | 02-06-2014 |
| 20140037297 | LED LIGHT GLOBAL POSITIONING AND ROUTING COMMUNICATION SYSTEM - An LED light and communication system includes at least one optical transceiver, the optical transceiver including a light support and a processor. The light support has a plurality of light emitting diodes and at least one photodetector attached thereto. The processor is in communication with the light emitting diodes and the at least one photodetector, where the processor is constructed and arranged to illuminate at least one of the light emitting diodes to generate a light signal which in turn includes at least one embedded data packet. The at least one embedded data packet communicates global positioning system (GPS) location information. | 02-06-2014 |
| 20140079404 | METHOD AND SYSTEM FOR FREE SPACE OPTICAL COMMUNICATION UTILIZING A MODULATED ELECTRO-OPTICAL POLYMER RETRO-REFLECTOR - A free space optical communication system (FSOCS) comprising a modulating retro-reflector (MRR) to receive an interrogation beam from a transceiver, and to modulate and reflect the interrogation beam. The MRR comprising a transmissive electro-optical polymer (EOP) modulator, a signal generator, and a retro-reflector, wherein the transmissive EOP modulator is to modulate the interrogation beam's polarization, the signal generator is operatively coupled to the EOP modulator and is to supply the modulation signal, and the retro-reflector is to reflect a modulated beam back towards the transceiver. | 03-20-2014 |
| 20140086591 | INFORMATION PROCESSING SYSTEM, INFORMATION PROCESSING METHOD, CLIENT DEVICE, AND RECORDING MEDIUM - Provided is an information processing system that includes a server and a client device. The server stores identification information and associated content in memory, and transmits the identification information, using light that varies over time as a communication medium. The client device continuously senses and decodes the light varying in time into the identification information, transmits the decoded identification information to the server, receives content transmitted from the server in response to the transmission of identification information, and displays received content. A controller included in the client device detects an operation on the displayed content from an input device, and applies control to transmit process details according to the detection to the server. The server additionally executes the process details transmitted from the client device, and updates the content to content that includes the execution results. | 03-27-2014 |
| 20140241731 | SYSTEM AND METHOD FOR FREE SPACE OPTICAL COMMUNICATION BEAM ACQUISITION - A free space optical communication system ( | 08-28-2014 |
| 20140270796 | METHOD AND APPARATUS OF DECODING LOW-RATE VISIBLE LIGHT COMMUNICATION SIGNALS - Methods and apparatus related to the detection of low-rate visible light communication (VLC) signals and the recovery of information communicated by the VLC signals are described. Various methods and apparatus are well suited for embodiments in which a device, e.g., a smartphone, including a camera which uses a rolling shutter. The rolling shutter facilitates the collection of different time snapshots of a received low rate time varying VLC signal with different pixel rows in the image sensor of a frame corresponding to different time snapshots. In some embodiments, demodulation is used to recover and identify a single tone being communicated in a frame from among a plurality of possible alternative tones that may be communicated, each different tone corresponding to a different set of information bits. | 09-18-2014 |
| 20140270797 | BUILDING ILLUMINATION APPARATUS WITH INTEGRATED COMMUNICATIONS, SECURITY AND ENERGY MANAGEMENT - An LED light and communication system includes one or more optical transceivers that have a light support having a plurality of light emitting diodes and one or more photodetectors attached thereto, and a processor in communication with the light emitting diodes and the one or more photodetectors. The processor is constructed and arranged to generate a communication signal. The one or more optical transceivers are engaged to a lighting fixture within a building. The one or more optical transceivers are constructed and arranged to communicate with a name tag. | 09-18-2014 |
| 20140314421 | APPARATUS AND METHOD FOR SWITCHING MODE IN A LOCATION BASED SERVICE SYSTEM USING VISIBLE LIGHT COMMUNICATION - A method and a lighting device for providing a Location Based Service (LBS) service providing a Location Based Service (LBS) based on Visible Light Communication (VLC) is provided. The method includes receiving, by at least one light source, data from a coordinator, the data including identification information of the at least one light source that corresponds to location information of the at least one light source, which is used by a terminal to identify a location of the at least one light source; and transmitting, by the at least one light source, the data to the terminal in a VLC signal. | 10-23-2014 |
| 20140334825 | PROTOCOLS FOR CODED LIGHT COMMUNICATIONS - Protocols for coded light communication and control in a lighting system wherein each lighting device transmits modulated light during illumination are proposed. When a first source lighting device need to transmit information across the lighting system to a destination lighting device one or more intermediate lighting devices decode received coded light transmissions from the first source lighting device. The one or more intermediate lighting devices superimposes the coded light transmissions from the first source lighting device with coded light transmissions from a second source lighting device in a broadcast. The first source lighting device uses the received broadcast signal from the one or more intermediate lighting devices to retrieve the coded light transmissions from the second source lighting device by canceling stored a priori known signal components. | 11-13-2014 |
| 20140341588 | LED Light Fixture - An LED light fixture includes one or more optical transceivers that have a light support having a plurality of light emitting diodes and one or more photodetectors attached thereto, and a processor in communication with the light emitting diodes and the one or more photodetectors. The processor is constructed and arranged to generate a communication or data transfer signal. | 11-20-2014 |
| 20150071646 | RACK SERVER - Provided herein is a rack server including a rack, a plurality of system boards and a fan plate. The system boards are disposed within the rack, and each system board has a first wireless transceiver. The fan plate is also disposed within the rack, and the fan plate has a plurality of second transceivers, and the second transceivers are wirelessly connected to the first transceivers, respectively. | 03-12-2015 |
| 20150086213 | LED LIGHT COMMUNICATION SYSTEM - An LED light and communication system includes at least one optical transceiver, the optical transceiver including a light support and a processor. The light support has a plurality of light emitting diodes and at least one photodetector attached thereto, the light emitting diodes receiving power from a power source. The processor is in communication with the light emitting diodes and the at least one photodetector, the processor capable of illuminating the light emitting diodes to simultaneously create at least one first light signal, and at least one second light signal, the first light signal being observable to the unaided eyes of an individual and the second light signal not being observable to the unaided eyes of the individual. The second light signal includes at least one data packet. The at least one data packet comprises global positioning system (GPS) location information. | 03-26-2015 |
| 20150341114 | LED Light Fixture - An LED light fixture includes one or more optical transceivers that have a light support having a plurality of light emitting diodes and one or more photodetectors attached thereto, and a processor in communication with the light emitting diodes and the one or more photodetectors. The processor is constructed and arranged to generate a communication or data transfer signal. | 11-26-2015 |
| 20160142156 | INTEGRATED DEVICE PACKAGE AND/OR SYSTEM COMPRISING CONFIGURABLE DIRECTIONAL OPTICAL TRANSMITTER - Some novel features pertain to a device that includes a first integrated device package and a second integrated device package. The first integrated device package includes a first package substrate, a first integrated device, and a first configurable optical transmitter. The first configurable optical transmitter is configured to be in communication with the first integrated device. The first configurable optical transmitter is configured to transmit an optical beam at a configurable angle. The first configurable optical transmitter includes an optical beam source, an optical beam splitter, and a set of phase shifters coupled to the optical beam splitter. The set of phase shifters is configured to enable the angle at which the optical beam is transmitted. The second integrated device package includes a second package substrate, a second integrated device, and a first optical receiver configured to receive the optical beam from the first configurable optical transmitter. | 05-19-2016 |
| 398129000 | Including alignment | 8 |
| 20080317474 | Optical interconnect - An optical interconnect has a plurality of optical data sources, a plurality of optical data receivers, a diffractive optical element configured to diffract an optical beam from at least one alignment optical source to at least one sensor, and an aligning element configured to align optical beams from the optical data sources to said optical data receivers, according to readings from the sensor. | 12-25-2008 |
| 20090310974 | APPARATUS AND METHOD FOR DETECTING THE POSITION OF MEDIA IN A MEDIA PATH - An apparatus ( | 12-17-2009 |
| 20100008674 | SURFACE EMITTING LASER DEVICE - To provide a surface emitting laser device including a substrate; an optical resonator arranged on the substrate, the optical resonator including a lower multilayer reflector and an upper multilayer reflector; a strained active layer arranged in the resonator, the strained active layer having a multiple quantum well structure formed with a quantum well layer and a barrier layer; and a current confinement layer arranged on an upper side of the strained active layer, the current confinement layer including a selectively oxidized portion, where the current confinement layer is arranged at a position where a strain in the selectively oxidized portion influences the strained active layer. | 01-14-2010 |
| 20100247106 | AUTOMATICALLY ALIGNING PHOTOBEAM ARRANGEMENT - A method of aligning an optical beam includes transmitting a first beam from a first optical transceiver to a second optical transceiver. A position of the second optical transceiver is adjusted based upon the received first beam. A second beam is transmitted from the second optical transceiver to the first optical transceiver. A command signal is transmitted from the second optical transceiver to the first optical transceiver. In response to the command signal, a position of the first optical transceiver is adjusted based upon the received second beam. | 09-30-2010 |
| 20110268453 | OPTICAL TRANSCEIVER BUILT-IN TEST (BIT) - An optical transceiver is provided with a light pipe that intercepts, offsets and redirects a portion of the collimated transmit beam to create a virtual object in the receiver field-of-view to perform the BIT. The light pipe comprises an input face and first reflective surface in the transmitter FOV to intercept a portion of the beam along a first axis and re-direct the beam, a second reflective surface and output face in the receiver FOV that re-directs the portion of the beam along a second axis towards the receiver to create the virtual object in the receiver FOV and an optical channel that guides the redirected portion of the beam from the first reflective surface to the second reflective surface to offset the second axis from the first axis. The same detector used during normal operation of the transceiver is used to perform the BIT, which may include a simple “on/off” test or a radiometry test. The light pipe may be designed with an acceptance FOV that preserves collimation, which facilitates a measurement of alignment error between the transmit beam and receiver. | 11-03-2011 |
| 20160006506 | METHOD AND SYSTEM FOR NEGOTIATION OF A PARAMETER OF AN OPTICAL COMMUNICATION PROTOCOL BETWEEN TWO DEVICES - The invention is a method for negotiating a parameter of an optical communication protocol between two devices. One device displays a first calibration image comprising a series of pixel patterns having a predetermined position and different sizes. The other device takes a first calibration picture of the first calibration image, identifies a set comprising at least one detectable pixel pattern in the first calibration picture and selects a setting data based on the set. Then it displays a second calibration image comprising this setting data which is read by the first device via another calibration picture. The first device retrieves the setting data from the calibration picture, selects a value based on the setting data and updates the parameter with the selected value. | 01-07-2016 |
| 20160149641 | COMMUNICATION METHOD - A communication method used in a terminal is provided that includes a front camera and a back camera. The communication method includes switching between the front camera and the back camera according to an orientation of the terminal, and performing visible light communication by using the front camera or the back camera, which is selected in the switching. The performing of visible light communication includes capturing a first subject that is changing in luminance by using the front camera and obtaining a first image when the front camera is used, capturing a second subject by using the back camera and obtaining a second image when the back camera is used, and obtaining specified information that is related to the first subject or the second subject. | 05-26-2016 |
| 20160170007 | SYSTEM AND METHOD FOR ESTIMATING THE POSITION AND ORIENTATION OF A MOBILE COMMUNICATIONS DEVICE IN A BEACON-BASED POSITIONING SYSTEM | 06-16-2016 |
