46results about How to "Suppress reception" patented technology

The invention provides a configuration-based intelligent substation communication network dynamic monitoring system and a monitoring method thereof. The monitoring system includes a network monitoring master station and at least one acquisition early warning terminal module which are connected through an Ethernet. The network monitoring master station is arranged at a station control layer to achieve state monitoring, anomaly alarm, anomaly early warning and management and maintenance of an intelligent substation communication network. Each acquisition early warning terminal module adopts the principle of local arrangement and abuts against network ports of a monitored network device for capturing, analyzing, determining and responding to packet information transmitted by the network ports. The technical scheme provided by the invention adopts a distributed manner to decompose the network acquisition data and data analysis, effectively solves the problems of huge amount of data acquisition of a conventional network monitoring analysis device and difficult data analysis, and achieves quick anomaly early warning and alarm of the network ports.

An apparatus for sound enhancement has at least two microphones (9) that provide a directional microphone array which is arranged to be pointed in the direction of a sound source. The directional microphone array thereby receives sound emitted by the sound source and generates sound signals. A processor (20) processors the sound signals generated by the microphone array to enhance the sound received by the directional microphone array from the sound source relative to other sound received by the directional microphone array. The processor (20) generates a corresponding enhanced signal (ES). Loud speakers (22) reproduce the enhanced signal as audible sound. Furthermore, sound suppression devices (7, 7a) are provided to suppress ambient should from reaching the eardrums of the user. This sound suppression acts in conjunction with the directional microphone array and the processor (20) which enhance the SOI to provide a listening environment in which the SOI is enhanced.

In order to reduce the cost for isolation between a surface coil and a body coil installed on a magnet assembly side, an RF shield for a surface coil is disposed between a body coil installed on a magnet assembly side of an MRI apparatus and a surface coil body not installed on the magnet assembly side. The reception by the body coil of RF pulses transmitted from the surface coil body is suppressed by the RF shield for the surface coil. Since an induced voltage in the body coil drops to a great extent, a switch provided on the body coil side no longer requires a component resistant to high voltage and high current. Thus, the apparatus can be simplified and the cost can be reduced. As a result, the reliability of the apparatus is improved.

A first outward passage 22 and a second outward passage 23 are branched from a branch portion 20 to guide refrigerants to a first evaporator 17 and a second evaporator 18, respectively. In the second outward passage 23 with a longer refrigerant flow path of the first and second outward passages 22 and 23, a second decompressor 19 is disposed closer to the branch portion 20 rather than the second evaporator 18 in the second outward passage 23. Further, a part 23b of the second outward passage 23 located on the downstream side of the refrigerant flow with respect to the second decompressor 19 is defined by an inner pipe of a double pipe 28, and a part of a second return passage 26 is defined by an outer pipe of the double pipe 28.

In an identification information examination mode, reception sensitivity of a reception device in an information obtaining mode is reduced. In the reception device, information transmitted from a transmission device mounted in a vehicle adjacent to the host vehicle is not received, and identification information transmitted from a transmission device mounted in the host vehicle is received. Then, an examination is performed by comparing the received identification information with the identification information stored in memory in advance.

An on-vehicle antenna system which offers a superior receiving performance, by suppressing reception of reflected/scattered waves coming from inside of the vehicle's cabin; these reflected/scattered waves being an adverse factor which deteriorates signal receiving performance of an antenna. The antenna system is installed at glass pane portion of a vehicle with direction (12) of the greatest radiation pattern (11) directed towards ahead (14) of the vehicle from boundary plane (10) containing power supply portion (9), while direction (13) of the smallest radiation pattern (11) towards behind (15) of the vehicle. The above-configured antenna system can suppress those waves reflected/scattered in the vehicle cabin from being received; as the result, it demonstrates improved characteristics.

A keyless entry system includes an on-vehicle unit and a mobile device, and controls on-vehicle equipment using a wakeup signal and a command signal. The on-vehicle unit radio-transmits a first transmission signal including the wakeup signal and a second transmission signal relating to the detection of an interference wave to the first transmission signal to the mobile device using radio signals having different frequencies. When the first transmission signal has been normally received, the mobile device radio-transmits a third transmission signal including the command signal to the on-vehicle unit and receives a second transmission signal. When the first transmission signal could not be normally received, the mobile device performs the detection of the interference wave to the first transmission signal and radio-transmits a fourth transmission signal for requesting the retransmission of the first transmission signal to the on-vehicle unit.

A receiving array antenna with a variety of channels for converting received signals from receiving antenna elements (ANT) into an intermediate frequency signal (ZF) by using a circuit having one or several preamplifiers (LNA) and a mixer (MIX) connected in series, whereby a centrally generated local oscillator signal (LO) and calibration signal (CAL) are supplied to the circuit. A common distribution network (VNG) is available for the central oscillator signal (LO) and calibration signal (CAL), which is interconnected in such a way that the central local oscillator signal (LO) and calibration signal (CAL) is coupled into the circuit at the output of the receiving antenna element (ANT).

A vending machine includes a vend sensor for detecting a completion of a vend operation. The vend sensor includes an electronic circuit connected to first and second sound elements positioned on opposing sides of a product delivery chute of the vending machine. The first sound element directs a sound beam across the product delivery chute where it is received by the second sound element. During a vend operation, a product container is guided to the product delivery chute to be dispensed to a consumer. As the container passes through the product delivery chute, the sound beam is interrupted, thereby signaling the completion of a vend operation. Each of the first and second sound elements is provided with a cone that focuses the sound beam so as to limit interruptions stemming from outside sound sources.

A laser radar device has a light projection part that projects light to a monitoring area outside a vehicle from a vehicle interior through a glass surface, a light receiving part that is placed a given distance away from the light projection part in a substantially horizontal direction to receive reflected light from an object outside the vehicle in the light projected by the light projection part through the glass surface, a measuring part that measures the distance to the object in the monitoring area based on timing when the light projection part projects the light and timing when the light receiving part receives the reflected light, and a light-projection shielding part that shields the light projected to an outside of the monitoring area in the light projected by the light projection part.

A liquid ejecting head is operable to eject liquid toward a target medium. A light emitter is operable to emit light. A light receiver is adapted to receive the light emitted from the light emitter, and operable to output a signal in accordance with an amount of the received light, thereby detecting a position of the liquid ejecting head. A transparent member is elongated in a first direction and disposed between the light emitter and the light receiver. A line pattern is provided with the transparent member so as to oppose the light emitter, and including light transmitting sections and light shielding sections which are alternately arranged in the first direction with a first pitch. Each of the light transmitting sections is adapted to allow the light emitted from the light emitter to pass through. Each of the light shielding sections is adapted to shield the light emitted from the light emitter. A width of each of the light transmitting sections in the first direction varies relative to a second direction perpendicular to the first direction. The light receiver includes a substrate elongated in the first direction. A plurality of light receiving elements are arrayed on the substrate in the first direction such that positions of adjacent light receiving elements relative to the second direction are made different in accordance with the width of each of the light transmitting sections.

After a predetermined period of time has lapsed after transmission of a voice data packet representing a first voice section a second voice data packet representing the same voice section is transmitted. On the receiving end, a value for the transmission quality is determined for the first and for the second voice data packet and the one of the two voice data packets is processed that has the better transmission quality.

A photoacoustic imaging device includes a light source that emits pulsed light at a subject, an ultrasonic transducer that converts vibration of a detection object of the subject that is generated according to the pulsed light to an electric signal, and a controller that selectively activates or deactivates the ultrasonic transducer, the controller deactivating the ultrasonic transducer while the light source emits the pulsed light.

The Present invention provides a correlator including, a read-out processing circuit that reads out an OFDM signal in RAM as 2n−1 number of delay OFDM signals that are increased and delayed sequentially with their adjusted read-out timings. Complex conjugate circuits that outputs complex conjugates of the inputted n^th to 2n−1^th delay OFDM signals. Complex arithmetic circuits that perform complex multiplication to inputted original OFDM signal, the first to n−1^th delay OFDM signals, and the output signals from the complex conjugate circuits. Moving average processing circuits take the moving average of the GI length, gain adjustment circuits adjust the gains, an adder circuit adds the outputs of the adjustment circuits, and a filter circuit smoothes the addition result. A control circuit variably controls the delay of the delay OFDM signals, the gains of the gain adjustment circuits, and the band characteristic of the filter circuit.

A light emitter is operable to emit light. A light receiver is adapted to receive the light emitted from the light emitter, and operable to output a signal in accordance with an amount of the received light, thereby detecting a position of an object. At least one transparent member is disposed between the light emitter and the light receiver. A first line pattern is provided with the transparent member so as to oppose the light emitter, and includes first light transmitting sections and first light shielding sections which are alternately arranged in a first direction with a first pitch. A second line pattern is provided with the transparent member so as to oppose the light receiver, and includes second light transmitting sections and second light shielding sections which are alternately arranged in the first direction with a second pitch. Each of the first light transmitting sections is adapted to allow the light emitted from the light emitter to pass through. Each of the first light shielding sections is adapted to shield the light emitted from the light emitter. Each of the second light transmitting sections is adapted to allow light having passed through the transparent member. Each of the second light shielding sections is adapted to shield the light having passed through the transparent member.