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| Number | Title | Issue Date |
| 8437640 | Non-contacting signal transfer for rotating interface An apparatus comprises a housing, a bearing member, and a transmission system. The housing has a channel in communication with an opening at a first end of the housing and a first surface at a second end of the housing. The first surface is substantially perpendicul... | 05/07/2013 |
| 8417122 | Apparatus for visible light communication indicating communication quality using RGB color mixing and method thereof A visible light communication apparatus of the present invention includes: a target signal receiver filtering only a signal having a target wavelength from a visible light received signal received from a transmitting terminal; a signal generator judging a reception ... | 04/09/2013 |
| 8412050 | Coaxial free space optical telescope and systems using the same Example embodiments may include a coaxial Free Space Optical (FSO) telescope providing a simplified and more precise structure. Example embodiment telescopes include a prism structure having at least two parallel surfaces associated with a filter and mirror. The fil... | 04/02/2013 |
| 8401394 | Method for non-flutter transmission of digital data in a free-space optical transmission system In a method for transmission of digital data in an optical free-space transmission system in which a binary code sequence produced from the digital data is used to transmit amplitude-modulated light waves across an optical free space between a transmitter and a rece... | 03/19/2013 |
| 8351793 | Free space optical communication with optical film Devices and systems are provided for free space optical communication using optical films. Some embodiments involve using an optical film for the transmission and/or reception of light in a free space optical communication system. Some free space optical communicati... | 01/08/2013 |
| 8320767 | Free-space photonic connection using wavelength division multiplexing and optical antenna An interconnect system has an optical transmitter mounted on a first circuit board and an optical receiver mounted on a second circuit board. The optical receiver can be nominally aligned to receive an optical signal through free space from the optical transmitter. ... | 11/27/2012 |
| 8244137 | Multichannel on a single wave laser over wave division multiplexing in free space optics using phase masks A system comprises a laser configured to produce a laser beam; a modulator optically coupled to said laser; and a phase mask optically coupled to said modulator. The phase mask may be configured to pre-distort a pre-existing wavefront to produce a pre-distorted wave... | 08/14/2012 |
| 8224186 | Transmission module and electronic system utilizing the same A transmission module including an emitter device, a first reflection device, and a second reflection device is disclosed. The emitter device emits a light. The first reflection device reflects the light to generate a first reflected light. The second reflection dev... | 07/17/2012 |
| 8184983 | Wireless directional identification and subsequent communication between wearable electronic devices Disclosed are methods, devices, and systems for exchanging information between a first wearable electronic device and one of a second wearable electronic device and an account at a remote computing device associated with a user of the second wearable electronic devi... | 05/22/2012 |
| 8131154 | Visible light communication apparatus A visible light communication apparatus is constituted with a transmitter for illuminating and projecting visible light on which an information signal is superimposed from a lamp fitting and a receiver for receiving the visible light to take out the information sign... | 03/06/2012 |
| 8103167 | System for free space optical communication and method for operation thereof A free space optical communication system is described that comprises a receiver node and a transmitter node communicating to each other via a control data communication channel and an information data communication channel operating at a wavelength region different... | 01/24/2012 |
| 8050570 | Optoelectronic sensor An optoelectronic sensor includes at least one light transmitter for the transmission of light signals into a monitored zone, at least one light receiver for the reception of light signals transmitted from the light transmitter and a control device for the generatio... | 11/01/2011 |
| 7885547 | Optical wireless transmission system for performing optical space transmission, and optical transmitter used therein An optical transmitter for performing high-rate data communication by means of optical space transmission is provided, which can reliably perform optical axis adjustment manually and visually, and can prevent a device from being made large in size and manufacturing ... | 02/08/2011 |
| 7831150 | Secure covert combat identification friend-or-foe (IFF) system for the dismounted soldier A combat IFF system, for use in a combat exercise or on the battlefield, including a helmet-mounted passive IFF response unit and a weapon-mounted IFF interrogatory unit for each soldier. Infrared (IR) signals are employed for both challenge and response. The IR res... | 11/09/2010 |
| 7813645 | Infrared light emitting and receiving system An infrared light emitting and receiving system (10) includes an infrared light emitting device (100), and an infrared light receiving device (200). The infrared light emitting device including a heat sink (102), at least a heat pipe (... | 10/12/2010 |
| 7809274 | Electronic device with reflection structure for reflecting optical signal to receiver thereof The electronic device includes a device housing, an emitter, a receiver, and a reflection structure. The emitter is separated from the device housing and emits an optical signal. The receiver is disposed on the device housing for receiving the optical signal. The re... | 10/05/2010 |
| 7424228 | High dynamic range radio frequency to optical link A communication system includes an optical transmitter which is differentially driven and an optical receiver that outputs a differential signal. The optical transmitter creates the differential drive signal from an input signal and delivers the differential drive s... | 09/09/2008 |
| 7421212 | Detecting and locating pulses using a Bragg cell Detecting a pulse of a signal includes receiving the signal and a light beam. The signal drives a spatial light modulator to modulate the light beam, where the complex amplitude of the modulated light beam is proportional to the signal current. The modulated light b... | 09/02/2008 |
| 7416352 | Optical multi-channel free space interconnect Various embodiments of the present invention provide optical multi-channel free space interconnects that provide optical channel isolation, thereby reducing crosstalk. ... | 08/26/2008 |
| 7415212 | Data communication system, data transmitter and data receiver A transmitter formed of two or more light-emitting sections such as LEDs, which are physically arranged in a predetermined manner, is disposed in the real world object, and each light-emitting section transmits data by flashing at a flashing pattern representing the... | 08/19/2008 |
| 7409161 | Free space optics communication apparatus and free space optics communication system A free space optics communication apparatus which can perform stable communication is disclosed. The free space optics communication apparatus has a plurality of light-emitting units each emitting a light beam which forms a generally elliptical irradiation pattern. ... | 08/05/2008 |
| 7406263 | Combined wavefront sensor and data detector for a free space optical communications system with adaptive optics In an adaptive optics module, wavefront sensing and data detection are implemented in a single device. For example, an optical-to-electrical converter converts a data-encoded optical beam to an intermediate electrical signal, which contains both the data encoded in ... | 07/29/2008 |
| 7391975 | Method of synchronizing servo timing in an optical wireless link A technique for synchronizing the servo control systems between two optical wireless links (OWLs) that are in communication with one another. This synchronization allows the alignment in time of the various tasks to be assigned in a desired time period. The synchron... | 06/24/2008 |
| 7386238 | Method and system for infrared data communications A method and system for conveying contextually relevant information to a wireless client are disclosed. More particularly, a transmitter transmits a diffuse infrared signal to a client having an IrDA compliant communication interface. The transmitter communicates wi... | 06/10/2008 |
| 7359640 | Optical coupling device and method for bidirectional data communication over a common signal line Optical coupling device operates over a bidirectional data link between at least first and second communicators, each communicating data along a common wire of the data link. The device includes at least first and second optical couplers, each including a photon flu... | 04/15/2008 |
| 7359649 | Infrared transmitter circuit and electronic device An infrared transmitter circuit causes an output current to flow to a light emission diode via a current mirror circuit constituted of three transistors by using a current supplied from a power source circuit, so that the light emission diode emits light. When a vol... | 04/15/2008 |
| 7359639 | Airborne free space optical communication apparatus and method with subcarrier multiplexing A free space laser communication system uses subcarrier multiplexing to prepare multiple data communication channels for impressing onto a laser carrier. Sending and receiving terminals mutually track to insure acquisition of the transmitted data signals. ... | 04/15/2008 |
| 7356262 | Time division multiplexing of analog signals in an optical transceiver An optical transceiver module having a multiplexing analog control interface. The optical transceiver module comprises a controller and integrated post-amplifier/laser driver, which are included on a printed circuit board associated with the module. Transmitting and... | 04/08/2008 |
| 7352972 | Method and apparatus for the zonal transmission of data using building lighting fixtures This invention relates to the zonal transmission of data by radio means and optionally by optical means through the modulation of light from common building light fixtures, including the light output of fluorescent, mercury vapor, and other arc or discharge lamps an... | 04/01/2008 |
| 7346282 | Optical-transmission-space determining apparatus and optical-space transmission apparatus An optical-space transmission apparatus for use in communication by using light propagating in a space includes a light-receiving unit, an optical system including a movable mirror and introducing light incident thereon to the light receiving unit with the movable m... | 03/18/2008 |
| 7333727 | Reconfigurable, multi-user communications network, with low latency time The invention concerns a reconfigurable, multi-user optical communications network, with low latency time. It comprises at least one transmitter generating from a digital data signal a brightness-modulated light signal, encoded with a pseudo-random code gener... | 02/19/2008 |
| 7330662 | System and method for remote optical digital networking of computing devices The extended range of optical data communication is enabled through the use of intermediary relay stations spaced fairly far apart. IRDA communicatiOn, as is well known, uses very short duration optical pulses to send data up to 1 Mbit/sec; this has the concomitant ... | 02/12/2008 |
| 7330661 | Method and apparatus for optical communication between devices A method and apparatus for processing a data signal for transmission to a remote device transmits at least two synchronized copies of the data signal, in optical form, in different directions. To that end, the data signal first is synchronized to a clock signal to p... | 02/12/2008 |
| 7321732 | Method and apparatus for improving noise immunity for low intensity optical communication An optical communication probe enables a diagnostic tool to optically communicate with an external device, such as an appliance, through a low intensity indicator light of the external device. The communication probe includes an optical transmitter, an optical recei... | 01/22/2008 |
| 7308207 | Method for identifying an interrogated object using a dynamic optical tag identification system An interrogator identifies an interrogated object using a light transceiver and a dynamic optical tag associated with the interrogated object. The dynamic optical tag receives an output light beam from the light transceiver and controllably reflects the light beam b... | 12/11/2007 |
| 7308203 | Free space optical data link for aircraft The present invention is a method and system for transmitting data between two objects via a free space optical data link. In an exemplary aspect of the present invention, the method may start with a step in which a laser beam modulated with data is transmitted to t... | 12/11/2007 |
| 7292788 | Multi-beam laser communications system and method A laser communications system includes a wide-field sensor, configured to detect a first set of laser communications sources within a first field of view, a narrow-field sensor includes a tracking portion and a control portion configured to receive laser communicati... | 11/06/2007 |
| 7286767 | Optical transceiver over single communication link A method, apparatus, and system for optical communications. An optical transmit signal is generated in response to an electrical transmit signal. The optical transmit signal is coupled into a single communication link for transmission there over. An optical receive ... | 10/23/2007 |
| 7269357 | Transceiver with programmable signal parameters An integrated post-amplifier and laser driver assembly is provided that includes a digital control interface for communication with an external digital IC controller having an I2C bus configured to receive signal parameter programming input from a user. The PA/LD in... | 09/11/2007 |
| 7269355 | Optical space communications device and control method thereof An optical space communications device includes a transmitter circuit which assigns an idle code indicating that the device is transmitting no data so that the idle code differs from an idle code for another device and which, when the transmitter circuit continuousl... | 09/11/2007 |
