163 results about "VIT signals" patented technology

Methods and apparatus for executing a lighting program to control a plurality of light emitting diodes (LEDs) in response to at least one characteristic of an audio input. In one embodiment, the audio input is digitally processed to determine the at least one characteristic. In other embodiments, control signals for the LEDs are generated in response to a timer and/or input from a user interface, as well as in response to the at least one characteristic of the audio input. In another embodiment, the control signals for the LEDs are generated by a same computer that processes the audio input to transmit signals to speakers to audibly play the audio input. In a further embodiment, a GUI is provided to assist in authoring the lighting program. In another embodiment, the audio signal is processed before being played back. In a further embodiment, the lighting program anticipates changes in the audio input.

A long-range radio frequency (RF) transceiver-controller module configured to transmit and receive RF signals in one or more of the 433, 868, 915 MHz, and 2.4 and 5.8 GHz Industrial, Scientific and Medical (ISM) frequency bands is provided that is capable of consistently transmitting such signals over a range of 100 metres or more without line of sight, including underground. A wireless control system that comprises a plurality of the long-range RF transceiver-controller modules arranged in a distributed, ad hoc networking topography is also provided. The wireless control system has utility in a wide range of medical, industrial, agricultural, military and commercial applications, including, for example, the management of irrigation systems, manufacturing processes, security systems, sewage treatment and handling systems, hospital management systems.

The invention relates to a method and circuit for linearizing amplifiers and other nonlinear circuits for multi-carrier signals. An output signal from the amplifier is sampled, and a correlation matrix of size N×N is computed from the sampled signal, wherein N exceeds the number of multiplexed carriers in the signal. A signal-to-distortion ratio (SDR) is then estimated based on a ratio of one or more largest to one or more smallest eigenvalues of the correlation matrix, and the signal into the amplifier is pre-distorted so as to maximize the SDR.

The invention relates to a wheel-type X-ray flaw detection robot device which comprises an X-ray flaw detection device, a remote wireless transmission device, a computer control device, a differential GPS (Global Positioning System), a fuel battery (or lead acid battery pack) and a robot body, wherein four infrared cameras are arranged on the robot body, and real-time images are remotely transmitted to an operator through video transmission equipment; a direct current voltage regulator is adopted in the controller of an X-ray generator; and the regulator is connected with an inverter by a tube voltage regulation knob, so that the tube voltage of the X-ray generator can be regulated. The operational control and operational state of the robot body are as follows: a digital data radio is adopted to transmit filed signals to an upper control computer; video signals are displayed on a display with visual display and convenient operation; isotope sources are not used, thereby meeting the requirement for environment protection; and a suspension system enables the robot body not to deflect and turn laterally on pipelines and rocks.

A switching power supply apparatus includes a PFM control circuit that outputs a clock signal Set such that a switching frequency of a switching element varies in accordance with a load state. The clock signal Set determines a turn-on timing of the switching element. A reference value of a current flowing through the switching element determines a turn-off timing of the switching element. A modulation signal is applied to the turn-off timing of the switching element to modulate one of a peak value of a drain current flowing through the switching element and an on-time of the switching element. Input control is performed separately on the clock signal Set and the modulation signal. Accordingly, even when the clock signal Set and the modulation signal contribute to each other to offset each other, modulation effects are not cancelled.

A signal encoding apparatus (10) limits an inputted time series signal to a low frequency band signal having a certain cut-off frequency or less to include the low frequency band signal into code train for outputting encoded low frequency band code train. In addition, the signal encoding apparatus (10) adaptively determines aliasing frequency f_a, shift frequency f_sh or tone•noise synthesis information r used for generation of high frequency band signal at the decoding side to include these information into code train outputted along with high frequency band spectrum envelope information as high frequency band generation information. A signal decoding apparatus generates a high frequency band signal from a low frequency band signal by using high frequency band signal generation information included in code train and high frequency band spectrum envelope to add the generated high frequency band signal and the low frequency band signal to thereby output a time series signal extended up to the high frequency band signal.

An apparatus is provided for detecting Macro Sleep Architecture states of a subject such as WAKE, NREM and REM sleep from a subject's EEG. The apparatus includes an EEG digital signal assembly of modules arranged to convert analogue EEG signals into digital EEG signals. A bispectrum assembly is responsive to the EEG digital signal assembly and converts the digital EEG signals into signals representing corresponding bispectrum values. A bispectrum time series assembly, in electrical communication with an output side of the bispectrum assembly, generates at least one bispectrum time series for a predetermined frequency. A macro-sleep architecture (MSA) assembly is responsive to the bispectrum time series assembly and is arranged to produce classification signals indicating classification of segments of the EEG signals into macro-sleep states of the subject.

A photon operating device is capable of more effectively using five senses and muscular or other functions humans have, and capable of performing various kinds of information processing as high-level interface connecting image information of natural worlds and human brains. The photon operating device comprises a plurality of first optical fibers, a plurality of second optical fibers, which both are arranged in form of a grating on a two-dimensional plane, semiconductor lasers and CCD line sensors, which both are disposed at one-side ends and the other ends of the first optical fibers, respectively. A photon beam introduced from a light source into one end of a selected first optical fiber is divided into two correlated dual signals, i.e. a first signal traveling through the selected first optical fiber and a second signal led out from the selected first optical fiber externally of the two-dimensional plane, at an intersection between the first and second optical fibers by an optical switch. The fist signal led out from the other end of the selected first optical fiber is detected by a CCD line sensor.

To perform volume control matching the actual auditory sensation level of a human so as to improve the control accuracy. As shown in FIG. 1, an audio gain adjustment device 10 includes: an audio signal input section 12 that acquires an audio signal to be adjusted; a long-term gain reflection section 14 that reflects the adjustment of long-term gain in the acquired audio signal; a frequency division section 20 that divides the audio signal from the long-term gain reflection section 14 into three frequency bands; a short-term gain reflection section 30 that reflects the adjustment of short-term gain in each frequency band; a synthesis section 40 that synthesizes audio signals output from the short-term gain reflection section 30; and an audio signal output section 42 that outputs the synthesized audio signal.

The invention discloses a signal detection and judgment method and device in the capture of a weak satellite navigation signal. In a weak-signal environment, a high-sensitivity satellite navigation receiver needs to accumulate correlated results of a pseudo code for a long time so as to meet the sensitivity gain requirement of capture. The invention aims to reduce the SNR (Signal-to-Noise Rate) loss brought from a detection and judgment process of the correlated results by using a signal-based PAPR (Peak-To-Average Power Ratio) judging method and provides a self-adaptive treatment method for judging a threshold. Meanwhile, in the invention, the influence of a near-far effect is considered, and a judging module for removing cross correlation after primarily judging signal existence is provided so as to weaken the influence of the cross correlation interference of C/A (Coarse/Acquisition) codes. A control module carries out two-dimensional search on a capturer, and a method for detecting a maximum value falling trend is used for judging Doppler frequency shift existing in the current signal so as to shorten the search time of a frequency dimension and increase the capture efficiency. The invention is suitable for systems such as a GPS (Global Positioning System), BD-2 (BeiDou-2), and the like and can achieve the cold-boot capture sensitivity up to -145dbm.

A master unit and a remote unit is provided for a multiband transmission system for distributing and combining signals of at least one wireless communication network and at least one digital network. A reference frequency generator is arranged in the master unit, the reference frequency generator being designed to clock a master modem for converting the signals of the at least one digital network. The reference frequency signal emitted by the reference frequency signal is restored via a reference frequency receiver and is used for closing a remote modem that is located there for demodulation.

The invention discloses a method and equipment for data transmission. The method includes: in the uplink direction, subjecting an uplink signal to down-sampling by an RRU (radio remote unit) according to a P/Q ratio to obtain an uplink signal with a second sampling rate, subjecting the down-sampled uplink signal to quantization compressing according to a preset compression ratio, sending the uplink signal subjected to quantization compressing to a BBU (baseband unit), and using the BBU for quantization decompressing of the uplink signal subjected to quantization compressing; and in the downlink direction, using the BBU for quantization compressing of a downlink signal with the second sampling rate according to the compression ratio, sending the downlink signal subjected to quantization compressing to the RRU, using the RRU for quantization decompressing of the downlink signal subjected to quantization compressing, and subjecting the downlink signal after quantization decompressing to up-sampling according to a Q/P ratio. By means of combination of down-sampling and quantization compressing, the volume of data transmitted through an interface Ir is effectively compressed.

The invention discloses an ultrasound thickness measuring method and a device based on broadband frequency-modulation and receiving compensation. Thee method structures an intermittent type broadband linear frequency-modulation ultrasound signal by using the method of linear frequency-modulation; broadcasting time of the intermittent type broadband linear frequency-modulation ultrasound signal at the inner part of a workpiece is inverted according to frequency parameters of emitted and received frequency-modulation signals; workpiece thickness is obtained by combining a preset sound speed. The device comprises a handhold type control, a display and an array type ultrasound wave probe component, wherein the array type ultrasound wave probe component is composed of a plurality of ultrasound transducers capable of stimulating the broadband linear frequency-modulation ultrasound wave, wherein one ultrasound transducer is arranged in the middle, and the rest ultrasound transducers are arranged at four sides. The ultrasound thickness measuring method and the device can realize the flaw detection at a near field and a remote field; and the invention is low in energy loss, small in volume, high in precision and strong in antijamming capability; and furthermore, the ultrasound thickness measuring method and the device can adapt various noise environments.

The invention discloses a chopper-type direct current detection method and a circuit. A forward voltage and a backward voltage of two ends of a shunt resistor are continuously collected in real time through a certain frequency. A sampling value of a first half of a chopper period and a sampling value of a second half of the chopper period in a same chopper period are calculated and influences of a low-frequency noise, an offset voltage and other noises on a detection result are eliminated. The detection circuit comprises a shunt resistor, a simulation switch, an amplifier, an analog-to-digital converter and a control unit. The simulation switch is connected in parallel to two ends of the shunt resistor. An input terminal of the amplifier is connected to an output terminal of the simulation switch. An input terminal of the analog-to-digital converter is connected to an output terminal of the amplifier. An input terminal of the control unit is connected to an output terminal of the analog-to-digital converter. An output terminal of the control unit is connected to a control signal input terminal of the simulation switch. On one hand, the control unit provides a digital signal to control switching of the simulation switch; on the other hand, according to digital forward and backward voltage signal, the control unit acquires a direct current detection value. A circuit structure provided in the invention is simple; test accuracy is high and cost is low.

The invention provides a converter of a 1553B bus remote terminal (RT) node and a controller area network (CAN) bus and aims to provide a flexible and reliable converter capable of rapidly connecting a 1553bus and the CAN bus. According to the technical scheme of the converter, a digital signal processor (DSP) chip accesses an intellectual property (IP) core of a 1553B RT of a field programmable gate array (FPGA) and a CAN protocol chip through addresses, data and control signal lines, receives an interrupt signal produced by the IP core of the 1553B RT of the FPGA and the CAN protocol chip, dispatches a control software operation platform to read and configure 1553B bus RT node parameters and CAN bus node parameters, and achieves conversion of the 1553B bus RT node and the CAN node on a data application layer. According to an FPGA chip, a mode of the IP core of the 1553B RT is used as a 1553B bus protocol controller, and a 1553B interface drives a transformer circuit to access a 1553B bus network to link a physical layer of a 1553B bus; the CAN protocol chip is combined with a CAN isolation drive circuit to access a CAN bus network.

A periodic defect detecting device comprises a sensor (4), small area selecting means (72, 74), an evaluation index calculating means (76), set value varying means (73, 75), and a period determination means (77). The small area selecting means (76) determines positions of small areas, the area lengths of which are smaller than that of an area, so that distance intervals between adjacent small areas are all equal, in the direction of arrangement of periodic defects, and selects signals corresponding to the positions of the plurality of small areas from the sensor output. The evaluation index calculating means (76) calculates the evaluation index of the mutual similarity of the signal patterns between the plurality of signals selected by the small area selecting means. The set value varying means (73, 75) vary the positions and distance intervals of the small areas to repeat the operation processing of the small area selecting means and the evaluation index calculating means. The period determination means (77) determines the distance intervals as periods when the evaluation index is higher than a preset value. A periodic defect detecting method comprises a signal input step, a small area selecting step, an evaluation index calculating step, a set value varying step, and a period determination step.

A display device comprises pixels PX each of which has one of different luminosity characteristics, signal line blocks each including a preset number of signal lines X connected to the pixels PX having a common one of the luminosity characteristics, and a signal line driving circuit which drives the signal lines X according to a video signal. Particularly, the signal line driving circuit includes a selection circuit which sequentially selects the signal line blocks in an effective picture period of the video signal and an external driving unit which drives the preset number of signal lines included in the signal line block selected by the selection circuit.

An electronic timepiece enables a simple construction, and an electronic device has the electronic timepiece. A wristwatch 1 has a button A 6; a mode setting unit 32 that sets the operating mode of the wristwatch 1 based on an input operation of the button A 6. Based on the continuous input time that the button A 6 is operated continuously, the mode setting unit 32 changes the operating mode between a timekeeping mode that receives satellite signals from one or more GPS satellites and adjusts the internal time information based on time information contained in a received satellite signal; and a positioning mode that receives satellite signals from three or more GPS satellites and adjusts the internal time information based on time information and positioning information contained in the received satellite signals.

The invention provides a power line carrier communication terminal device which comprises a power line carrier power adapter system used for allowing a strong-current power supply to be subjected to voltage reduction processing for outputting a low-voltage power supply, a signal modulation-demodulation system used for modulating/demodulating signals, and a signal transmission device used for transmitting low-voltage power supply and power line carrier signal, wherein the power output interface of the power line carrier power adapter system is connected with the power input interface of the signal modulation-demodulation system through the signal transmission device, so as to supply low-voltage direct current supply; and the power line carrier signal transmission interface of the power line carrier power adapter system is connected with the power line carrier signal transmission interface of the signal modulation-demodulation system through the signal transmission device, so as to realize the power line carrier signal communication. The device provided by the invention solves the electric safety problem, has an integrally reduced size and brings convenience for integration.

A circuit and method for calibrating a VCO (voltage controlled oscillator) is disclosed. In one embodiment, a circuit includes a VCO and a bias control circuit coupled to a tail node of the VCO. An amplitude control unit may also be coupled to the tail node, wherein the amplitude control unit is configured to determine the amplitude of a VCO output signal based on a voltage present on the tail node. The amplitude control unit may also be configured to generate a bias voltage based on the amplitude of the VCO output signal and a target voltage. The bias control circuit may be coupled to receive the bias voltage from the amplitude control unit and may be further configured to adjust the voltage on the tail node based on the received bias voltage.

The invention provides a power line carrier modulation method, a demodulation method, a circuit and a chip. The modulation method comprises the following steps of: detecting narrow-band nongaussian noise frequency in a power line; selecting non-noise frequency from a preset carrier frequency band as modulation carrier frequency; generating a modulation carrier according to the modulation carrier frequency; modulating a digital signal to be modulated to the modulation carrier to generate a power line carrier signal. By using the modulation method, the narrow-band nongaussian noise frequency can be avoided, the change of noise environment of the power line can be adapted, and the quality of power line communication can be improved.

The invention relates to an infrared seeding monitoring device which comprises a singlechip, an infrared emission circuit, an infrared detection circuit, a buzzer voice alarm circuit and an LCD circuit, wherein a control unit of the detection device adopts a 8-bit singlechip; a power supply circuit comprises a voltage-stabilizing module and provides a stable +5V voltage for the system through a capacitance filter; the infrared emission circuit adopts an infrared pipe and is demodulated into a 38kHz infrared carrier signal by using a timer of the singlechip, and the 38kHz infrared carrier signal is output by a P2.7 port, is amplified by an audion, and is transmitted by an infrared transmission pipe; and an infrared receiving circuit has a core of an infrared receiving module which is a receiver integrating the receiving and the amplifying of an infrared raw signal, wherein the center receiving frequency of the receiver is 38kHz, the output of the receiver is TTL level, the output of the receiver at ordinary times is high level, and when a code signal is received, the output is low level. The invention can ensure that the signal is accurately controlled by the singlechip, and has simple and stable mechanical structure and reasonable circuit design.

The invention relates to a method and device for recovering oversampling parallel data. The method for recovering the oversampling parallel data comprises the following steps: carrying out pairwise exclusive-OR operation on all the data of a current clock period of oversampling parallel data and the last data of a previous clock period so as to obtain the jumping edge signal value of the oversampling parallel data of the current clock period; issuing the effective data bit indication of the current clock period according to the jumping edge signal value; and outputting the effective data of the oversampling parallel data of the current clock period according to the oversampling parallel data input by the current clock period and the effective data bit indication. According to the method and device which are disclosed by the invention, the data recovery of oversampling parallel data with wider bit can be simply carried out with high efficiency.