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| Number | Title | Issue Date |
| 8139943 | Optical communication apparatus and optical communication method An optical communication apparatus is disclosed. The optical communication apparatus includes a light transmission section, a light reception section, and a control section. The light transmission section causes a light emitting portion which outputs light in a visu... | 03/20/2012 |
| 8116632 | Space-time division multiple-access laser communications system A space-time division multiple-access (STDMA) laser communications (lasercom) system and related techniques. The STDMA system includes a plurality of remote nodes and an STDMA access node which uses precise electronic beam steering and beacons to provide access to e... | 02/14/2012 |
| 8064772 | Optical space transmitter and optical space transmission method for wavelength-multiplexed light Provided is an optical space transmitter and an optical space transmission method, for wavelength-multiplexed light, capable of obtaining a wavelength-multiplexed signal by multiplexing optical signals having a plurality of wavelengths with a simple configuration an... | 11/22/2011 |
| 8050569 | Device for optical remote monitoring and system comprising such a device A device for optical remote monitoring, preferably an optically readable membrane-based microphone, and a system including such a device is provided. The device for optical remote monitoring includes a retroreflector and an acoustic membrane. The acoustic membrane s... | 11/01/2011 |
| 8041224 | Optical frequency division multiplexed communications over the horizon A non-line of sight (NLOS) communications system and method are provided that implement orthogonal frequency, division multiplexing. A data generator produces a digital data stream, which is converted into M parallel frequency sub-carrier digital data streams (where... | 10/18/2011 |
| 8041225 | Contactless infrared data transmission for wind turbines An apparatus for enabling transmission of signals and data via means of infrared (IR) light for a wind turbine includes a plurality of IR data communication elements configured to provide unidirectional and bidirectional IR data exchange between non-rotating portion... | 10/18/2011 |
| 8009990 | Optical phased array A transmitter modulates a laser beam with data and projects the laser beam. A first and second optical detector indirectly receive a first and second signal (respectively) via light scattered from a first and second segment of the laser beam at a first and second ti... | 08/30/2011 |
| 7995925 | Optical receiver using beam combining and system using the same An optical beam combiner is provided, which allows efficient collection of light for various applications: non-line of sight and free space optical communications, remote sensing, optical imaging and others. A multitude of transverse scattered optical beam portions ... | 08/09/2011 |
| 7986883 | Solar blind ultraviolet communication system for unattended ground sensor network The systems and methods described herein allow a user to communicate using a ground sensor network that is capable of both line-of-sight (LOS) and non-line-of-sight (NLOS) communication. In particular, the systems and methods herein described transmit and receive ul... | 07/26/2011 |
| 7983565 | Integrated optical communication and range finding system and application thereof The present invention is directed toward systems for conducting laser range and enabling optical communication between a plurality of entities and to the application of such systems in a secure covert combat identification system. In one embodiment, the present inve... | 07/19/2011 |
| 7945168 | Free-space quantum communications system and process operative absent line-of-sight Photonic signals are tagged with a pre-selected modification, such as a polarization signature to carry data across an obstructed path between sender and receiver. Communication authentication through polarization variation allows for Yuen-Kumar or entangled photon ... | 05/17/2011 |
| 7929865 | Free space WDM signal detector A system can include a transmitter that produces an optical signal having a plurality of carrier frequencies and a receiver separated from the transmitter by free space through which the optical signal propagates. The receiver includes an array of detectors of multi... | 04/19/2011 |
| 7873280 | Method and apparatus for free-space optical interconnects between arbitrary locations in a field using lenses, steering elements and a curved reflecting surface A method and apparatus for achieving high-density and misalignment tolerant short-reach free-space optical interconnects between arbitrary locations in a field, using microlenses, steering elements and a curved reflecting surface. ... | 01/18/2011 |
| 7869714 | Electronic system having free space optical elements An electronic system includes a first circuit board having a first optical element and a second circuit board having a second optical element positioned to electronically communicate with the first optical element over free space. The system also includes a cold pla... | 01/11/2011 |
| 7805079 | Free-space quantum communications process operative absent line-of-sight Photonic signals are tagged with a pre-selected modification, such as a polarization signature to carry data across an obstructed path between sender and receiver. Communication authentication through polarization variation allows for Yuen-Kumar or entangled photon ... | 09/28/2010 |
| 7801448 | Wireless communication system with high efficiency/high power optical source An optical communication system is provided which includes an optical signal transmitter which communicates high bandwidth, high power frequencies. The optical signal transmitter includes a high efficiency/high power optical source such as an optical magnetron or a ... | 09/21/2010 |
| 7627251 | Wavelength division and polarization division multiple access free space optical terminal using a single aperture A communication device uses one or two stacks of reflective deflectors to steer the electromagnetic waves carrying signals received and transmitted through a single telescope/aperture device. The signals outside the device may be circularly polarized while inside th... | 12/01/2009 |
| 7609972 | Acquisition, pointing, and tracking architecture for laser communication A technique for acquiring and tracking terminals in a free-space laser communication system involves exchanging beacon laser beams between the terminals to acquire and then track the terminals such that data laser beams exchanged by the terminals for communication a... | 10/27/2009 |
| 7577364 | Optical wireless communications An optical wireless local area network using line of sight optical links. The base station and terminal stations are provided with optical transceivers which include a transmitter array and detector array. The transmitter array consists of an array of resonant cavit... | 08/18/2009 |
| 7546038 | Method for wireless optical transmission of data and wireless optical data transmission system The invention relates to a wireless optical data transmission system and a method for wireless optical transmission of data. The system comprises a data stream generator for generating at least two parallel data streams (18.1, 18.2, 18.3). The parallel data s... | 06/09/2009 |
| 7477846 | Method of reducing control packet transmission rate for an optical wireless link A method that does not rely on signal strength for detecting the presence of a broken optical wireless link. The method controls the packet transfer rate in a manner that minimizes both network overhead and computational requirements. Upon completion of the acquisit... | 01/13/2009 |
| 7474855 | Information support system A battery-less terminal (1) has means (21) for photoelectrically converting an optical signal from an information transmission device (2), means (12) for outputting the electric signal generated by the photoelectric conversion means (2... | 01/06/2009 |
| 7424225 | Systems and methods for implementing contention-based optical channel access A first node (205) in a network includes a non-optical transceiver (415) and an optical subsystem (410). The non-optical transceiver (415) sends a request message to establish an optical link from the first node (205) to a second n... | 09/09/2008 |
| 7421203 | Method for transmitting packet in wireless access network based on wavelength identification code scheme A method for transmitting a packet in a wireless access network based on a wavelength identification code scheme. The method comprises the steps of connecting n number of RNCs (Radio Network Controllers) to one sub-ring where the “n” is a positive integer, and a... | 09/02/2008 |
| 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 |
| 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 |
| 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 |
| 7403715 | Free space optical bus A free space optical bus system and method are provided for connecting two units of circuitry across a free space gap. A first unit of circuitry includes a multiplexer that combines a plurality of bus signals to obtain an electronic combined signal and a laser that ... | 07/22/2008 |
| 7400834 | Optical space transmission apparatus and optical space communication system An optical space transmission apparatus which performs a first communication, in which a light beam propagating through a space is used, with a remote apparatus includes a communication section and an identification section. Here, the communication section performs ... | 07/15/2008 |
| 7397018 | Amplitude and phase controlled adaptive optics system An adaptive optics system is provided. The system includes a light source, a pair of deformable mirrors and a detection module. The light source is configured to provide an outgoing beam. The outgoing beam has an amplitude and a phase. The first deformable mirror is... | 07/08/2008 |
| 7389051 | Illuminator including optical transmission mechanism An illuminator including an optical transmission mechanism includes a transmission-side electric circuit for forming electric signals modulated in response to information, a light source for emitting intensity-modulated light in response to the electric modulated si... | 06/17/2008 |
| 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 |
| 7379673 | Mobile communications system A communications system for wireless transceiving of information, comprising an optical array subsystem for transceiving optical signals and a millimeter wave subsystem for transceiving millimeter wave signals, and a beam steering controller for controlling the dire... | 05/27/2008 |
| 7379672 | Photonic RF distribution system The present photonic RF generation and distribution system provides a system and method for distributing an RF output signal. The photonic RF distribution system includes two optical sources for generating optical signals. A first optical source (42) is opera... | 05/27/2008 |
| 7373085 | Hybrid satellite and fiber communications system A communication system employing optical fibers and a high data rate satellite is utilized to provide high-speed Internet access to various geographic regions. In one aspect, a first teleport station is located geographically separated from a first user. The first t... | 05/13/2008 |
| 7369775 | Wireless duplex optical communication system A wireless optical communication systems using two optical transceivers located at the opposite ends of an optical communication line. The optical communication system can be either two-element, when each of the said transceivers contains one optical transmitter (em... | 05/06/2008 |
| 7362085 | Power line carrier communication system and its communication device, and method for constructing power line carrier communication system A power line carrier communication system includes a power line, a first communication device, a second communication device, the first and second communication devices being arranged on the power line and performing a communication via the power line, a storage sec... | 04/22/2008 |
| 7340131 | Collimator and optical filter device using the same It is a collimator adapted to convert divergent light beams outputted from an optical fiber bundle to parallel light beams through a collimator lens. A large diameter optical fiber is disposed between an optical fiber bundle, which is a bundle of a large number of m... | 03/04/2008 |
| 7340179 | Support of dual infrared remote signaling protocols A system and method for supporting two infrared signaling protocols in a single computing device is provided. The computing system operates in a default mode unless a priority signaling request is generated by an application program. Priority signaling requests are ... | 03/04/2008 |
| 7340186 | Discrimination phase margin monitor circuit, transmitting/receiving device and communication system The discrimination phase margin monitor circuit (10) of the present invention comprises a first discrimination circuit (11 and 12) discriminating an input data signal using a clock signal extracted from the input data signal, a second discrimina... | 03/04/2008 |
