RussianPatents.com
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Method for laser remote orientation of object and apparatus for realising said method. RU patent 2504906. |
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FIELD: physics. SUBSTANCE: motion path of a controlled object is changed through angular adjustment of the control field of the object, which is carried out successively using two rectangular laser rasters turned about each other by 90° and formed by scanning a laser beam in each raster in one continuous line. The continuous line is formed using two crossed anisotropic acousto-optical cells to which high-frequency chirp signals, the frequency range of which is defined by angular dimensions of the laser rasters, are transmitted by deflectors from the control unit. The controlled object obtains information on its spatial position relative the centres of the rectangular laser rasters through a photodetector mounted on the control object. A displacement code correction unit is used, through which current angular coordinates of the controlled object and angular coordinates of the target are calculated and the environment is monitored and obstacles are searched for. Angular correction of the control field of the object is performed in accordance with the control program of the object contained in a deflector control unit, and data input thereto from the displacement code correction unit. The laser remote orientation system includes a displacement code correction unit which consists of an object video camera, an object position control unit, a target video camera and a target position control unit. EFFECT: automatic control of the position of laser rasters for controlling an object. 4 cl, 1 dwg
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Method of estimating multimode fibre-optic line capacity from differential modal delay diagram / 2504082 Multimode fibre-optic line is probed with short optical pulses from a single-mode source and the pulse response is measured at the output. Uniform mode excitation conditions are ensured at the input. Pulse response measurement results from the output are used to calculate an equivalent refraction index profile of the multimode optical fibre, from which a set of pulse responses at the output of the multimode fibre-optic line is calculated for a set of combinations of optical radiation input and output conditions. The obtained set is used to construct a differential modal delay diagram and the multimode fibre-optic line capacity is estimated. |
Apparatus and method for supporting brightness adjustment for visible light communication / 2503130 Method and system for visible light communication (VLC) for use in a lighting environment with controlled brightness are provided. The method involves transmitting data using light from at least one light source, wherein brightness of the light reduced below a maximum level. The method also involves compensating for or adapting to the reduced brightness of the light at in VLC circuitry to maintain communication. The method further involves transmitting data to at least one VLC receiver using the light from the at least one light source. |
Apparatus for increasing fibre-optic transmission line capacity / 2498510 Apparatus has factory lengths of optical cable, the optical fibres of which are connected in series in connectors and have chromatic dispersion of the same sign. Optical amplifiers are connected in series into the optical fibres such that the distance between the optical amplifiers is broken down into elementary sections. High-nonlinearity optical fibres, circulators and variable period Bragg diffraction gratings are further included for dispersion compensation. The connectors are further fitted with holders in a housing made of heat-insulating material. An elementary section includes a connector, having a holder with a high-nonlinearity optical fibre, a circulator and a Bragg diffraction grating. Optical radiation power at the output of the optical amplifiers and the distance between them, the length of an elementary section, parameters of the high-nonlinearity optical fibre and variable period Bragg diffraction gratings for dispersion compensation are selected depending on parameters of optical fibres of factory lengths of the optical cable such that dispersion-controlled solitons propagate in the transmission line. |
Method and apparatus for realising optical channel data unit shared protection ring / 2497290 Invention can be used to realise an optical channel data unit (ODU) shared protection ring (SPRing). The method includes steps where: a first ODU of a first service transmitted in an optical line is taken as a protection granularity, where the first ODU is an ODUk that is directly multiplexed to the optical line; the first ODU is monitored, and a monitoring result is obtained; when the monitoring result indicates a failure, switching is performed through cross-connection of a second ODU of the first service, where the second ODU is an ODUm that is multiplexed to the first ODU, and m is smaller than or equal to k. |
Optical switching method and apparatus for enb base station / 2497281 Apparatus includes a fibre-optic transceiver for receiving from a source input device an optical signal containing transmission address information, and transmitting said optical signal, a transmission address module for receiving said optical signal, and requesting routing, control and storage of transmission address(es), a switching control module for obtaining transmission address information of the optical signal, analysing and selecting the optical switching mode, and transmitting a routing control signal containing transmission address and optical switching mode information, and an optical switching and routing module for receiving said optical signal and transmitting said signal to a target output device (106) through the fibre-optic transceiver (102), receiving the routing control signal from the switching control module (104), selecting routing and transmitting the optical signal to the target output device (106). |
Method of selecting multimode optical fibre with single-mode optical transmitter for multimode fibre-optic transmission line / 2496236 Multimode fibre-optic transmission line is probed with a test sequence of optical pulses to select a multimode optical fibre with a single-mode optical transmitter. For sets of values of parameters of standard optical radiation sources of an optical transmitter, standard values of parameters of mismatch at the input and standard values of parameters of the refraction index profile of multimode optical fibres for a given length of the transmission line, a set of standard pulse characteristics of the multimode fibre-optic transmission line is calculated, from which the set of patterns of filter characteristics for electronic compensation of dispersion is determined. The characteristic is then controlled by sorting the set of patterns, and a multimode optical fibre with a single-mode optical radiation source for the multimode fibre-optic transmission line is selected if at least, with one pattern of the filter characteristic for electronic compensation of dispersion, the controlled reception quality parameter of the test sequence lies within a given range. |
Signal transmission processing method and apparatus and distributed base station / 2494545 Distributed base station includes a base band unit (BBU) and a remote radio unit (RRU), wherein at least one interface signal channel of the distributed base station is received, transmitted by one of the BBU and RRU; optical transport network (OTN) electrical layer multiplexing is then performed through encapsulation to generate OTN signal frames; and electrooptical conversion is performed to generate an optical signal channel and transmit optical signals. On the side of the other of BBU and RRU, optical signals are received, and interface signals are restored therein and then transmitted to the other of BBU and RRU. |
Information transmission device / 2494544 Device includes N light-emitting and N light-sensitive elements, said elements being placed between planes perpendicular to an axis of rotation; the light-emitting elements are mounted inside a shaft on its transparent part, and the light-sensitive elements are mounted inside a bushing, wherein the space inside the bushing and the shaft is divided by corresponding partition walls into light-proof sections, wherein the partition walls dividing the shaft into sections are placed in the same plane as partition walls dividing the bushing into sections. |
Communication method, optical communication system, terminal equipment system of optical line on station side and terminal equipment system of optical line on user side / 2491738 Plurality of terminal equipment systems on the user side (ONU) (10) include an optical transceiver (14) which allows operation in power-saving mode, wherein power consumption is reduced by cutting transmission when reception continues, and a control device (11), which performs control for preliminary verification of transmission of the optical transceiver, and outputs a response signal when a control signal is received from the terminal equipment system on the station side (OLT) (1) during operation in a power-saving state. Furthermore, the OLT (1) includes a control device (2) which allocates transmission bandwidth for the ONU (10-1, 10-2, 10-3) even when the optical transceiver ONU (10-1, 10-2, 10-3) is operating in power-saving mode and stops transmission, and determines whether breakdown has occurred or ONU (10-1, 10-2, 10-3) is operating in power-saving mode based on the response signal received by the transceiver OLT (1). |
Onboard receiver of laser information transmission system / 2491724 Device includes new components: a failure counter, a logic device, transducer amplifier for communication between said components and other components. A search and track detector with a controlled capture bandwidth is also used. In order to improve quality of communication in case of optical antenna pointing errors under varying communication conditions, maintaining the optimum capture bandwidth of the tracking device based on an estimate of the state of the laser communication channel is proposed. The disclosed device enables, during the entire communication session, to maintain the optimum capture bandwidth of the tracking device, which provides the best (possible for current conditions) communication quality which is characterised by the maximum average information transmission speed. |
High-speed digital optical signal transfer line / 2247473 Proposed transfer line that can be used, for instance, in fiber-optic, laser, atmospheric optical and other communication systems has sending section and receiving section; sending section has clock generator, E-code shaper, code word shaping unit, additional trains shaping unit, first and second optical signal shaping channels, and optical multiplexer connected through optical signal transfer medium to receiving section; the latter has optical matched filter, directional coupler, first and second optical signal processing channels, subtracter, video amplifier, automatic gain control, optimal filter, resolving unit, and clock frequency recovery unit. |
Radio-signal dynamic memory device having series binary fiber- optic system / 2255426 In order to enhance identity of copy generation while retaining ability of controlling input radio signal replication process, proposed device is provided with newly introduced (N -1) fiber-optic four-terminal networks, each of them incorporating Y-type internal adding and separating fiber-optic directional couplers. |
Digital optical signal transmission line / 2286647 Proposed digital optical signal transmission line using complex signals of enhanced noise immunity has clock generator, E-code shaper, modulator, amplifier-modulator, laser generator, laser power stabilizer, two matching devices, optical-signal transfer medium, optical-signal selector, additional-train discriminating unit, dual-channel matched filter, video amplifier, automatic gain control, optimal filter, solver, and clock frequency recovering device. |
Interface for transferring discrete information through optical channel / 2289207 Transferred bits of information are converted into optical signals using the number of transferred bits of information. These signals are multiplexed in optical range by delays for defined time intervals and by changing wave-length, and grouped optical signal is forwarded to the transfer channel. On the receiving end of transfer channel the optical signal is demultiplexed, signal parts are delayed for defined time intervals and detect. Transferred bytes of information are put to output buffer register using synchronizing signal, which is transferred simultaneously with informational bits. Unlike known interfaces, the proposed interface does not have numerous coding and decoding, grouping of transferred messages into frames, etc. Due to these facts, useful information transfer speed is increased; noise immunity is improved, especially in impulse noise environment and outer mechanical and climate factors. |
Optical transfer module with digital adjustment and adjustment method / 2291574 Module includes laser, laser driver, automatic power adjustment circuit, automatic temperature adjustment circuit, digital adjustment circuit and memory. In the memory data are stored, used for operative adjustment of optical transfer module, including at least parameters of optical transfer module and laser radiation optical power parameters, meant for reporting to higher level. Adjustment occurs by browsing a table of optical transfer module parameters, in accordance to expected output optical power, receipt of appropriate data of digital-analog converter channel and recording thereof to digital adjustment circuit, producing signals for adjusting appropriate parameters, and also for finding report to higher level about transferred power, to receive value of transferred power for report to higher level. |
Transceiving device for limited-access protected fiber-optic data transfer system / 2297102 In order to make it possible to use proposed device in protected fiber-optic transmission systems, it is provided with newly introduced series-connected digital-to-analog converter, matching device, and regulator, radiator control device monitoring input is connected to first output port of controller whose second output port is connected to input of digital-to-analog converter, matching device output is connected to control input of regulator whose output is connected to input of amplifier; output of the latter is connected to input of detector whose output is connected to input of analog-to-digital converter; regulator input is connected to optical receiving module output. |
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Reserving method for synchronous fiber-optic communication network with spectral packing systems / 2307469 In accordance to the invention, sets of lengths of optical cables of communication network are selected, breakdown of each of which disrupts all routes between corresponding communication network units and value of total structural reliability coefficient of which is less than allowed, and installed into system are spectral packing terminals, optical routing commutators, optical multi-port commutators, optical power indicators and control blocks in units of communication system, incidental to lengths of cable of communication line, which compose selected sets, with following switching of information traffic to spectral packing terminal in case of loss of optical power in one of optical fibers. |
Mode of wireless communication over an atmosphere optical line and a system of wireless optical communication / 2312371 It is designed for increasing probability of guaranteed communication in complex meteorological conditions at simultaneous reduction of costs for creation and exploitation, and also on increasing ecological security of the system of optical communication. This result is achieved due to the fact that in the mode of wireless communication via an atmosphere optical line including transmission of information signal from a transmitting arrangement to a receiving arrangement via radio -or via an optical channel they at first execute transmission of the information signal from the transmitting arrangement to the receiving arrangement of communication over a laser optical channel and when the receiving information signal achieves the low threshold of intensity they switch on at least one transmitter of a broadband channel on which they continue transmission of the information signal on the corresponding receiver of the broadband radio channel, not switching off the transmitting and the receiving arrangements of the laser channel. At that in order that the receiving information channel attains the value of the threshold of intensity which is defined by given speed of transmission of information, they switch additional transmitters and receivers of the broadband radio channel. |
Communication system of millimeter and sub-millimeter wave range (variants) and receiver-transmitter for communication system of millimeter and sub-millimeter wave range and method for communication in sub-millimeter wave range / 2320091 In accordance to the invention, system, method and device use generation of two carrier oscillation-signals (or more than two carriers), modulation of carriers with information signal by changing their mutual frequency, phase or amplitude difference or a combination thereof, combination of carriers in form of their total in a radio-signal. Demodulation in receiving section includes extracting aforementioned differential signal of pulsations and first carrier from radio signal, used later on for precise adjustment of heterodyne signal. |
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