291 results about "Signal function" patented technology

A light sensor system includes at least one light emitter, a light sensor unit and a processing unit. The light sensor unit is arranged to receive reflected light from an object in accordance with a time sequence in which the at least one light emitter is activated, and accordingly output a plurality of reflected signals. The processing unit is arranged to receive the reflected signals, identify a signal function of time by referring to occurrence sequence of local peak levels of the reflected signals, and determine motion of the object according to the signal function of time. Another light sensor system is proposed. The major difference between the two light sensor systems is that the processing unit of the another light sensor system is arranged to identify the signal function of time by comparing a predetermined threshold with signal levels of the reflected signals.

The present invention relates to the conversion of signals from RF to baseband using transition functions, or edge functions. These functions typically transition from positive to negative, or from negative to positive, synchronously with the transition of the received pulse signal, effecting detection essentially by synchronously rectifying a signal cycle of the received pulse, producing a net signal at baseband that can be further processed to detect modulation according to the modulation format. It is further disclosed how to configure these systems for optimal reception with a filter optimized for a given detect signal function. Generalizations of the matched filter embodiment lead to further embodiments employing alternative detection functions. Also disclosed is a two-stage version which applies a decode signal to the rectified signal. This step can be performed by a single correlator or by a plurality of correlators in parallel. Coding methods are disclosed to employ two-stage systems for enhanced channelization, and interference rejection.

In a multi-domain computer system in which several processes are running, a composite lock provides mutually exclusive access to a resource. The composite lock has a back-end component and a front-end component. The back-end component is platform-dependent and operates as a semaphore, with Wait and Signal functions. The front-end component conditionally calls the Wait and Signal functions depending on whether the lock is currently contested when a new process wishes to acquire the lock, and on whether any process is currently suspended, waiting to acquire the lock. The front-end and back-end components may execute in different domains. In the uncontested case, the invention avoids costly domain crossings. The front-end component may also include a spinning feature to further reduce the need to invoke the back-end component and cause a domain crossing. The composite lock is particularly advantageous in computer systems that include a virtual machine.

The invention relates to an eccentric pump vibration accidence fusion diagnose method and relative vibration signal collector, wherein said invention is characterized in that: it uses the eccentric pump vibration signal collector to collect the normal state, the quantity imbalance, asymmetry rotate and loose base of eccentric pump; uses wavelet decomposition and reconstruction to extract the character of vibration signal; and inputs the character vectors into sub fuzzy neural networks I and II; to be treated and replace the relation factor matched with sensor signal function; the whole fuzzy neural network comprises data fuzzy layer, input layer, hidden layer and output layer; uses D-S theory to obtain the fused signal function distribution, realize the fusion diagnose on normal state, quantity imbalance, asymmetry rotate and loose base. The invention has simple structure and high effect.

Disclosed is a system and method for tracking location of objects (personnel) at a site. The system comprises: a central server, plurality of remote locator tags disposed on the objects, plurality of remote repeater devices capable of transmitting data signals to locate the locator tags, receiving location data signals from the locator tags, and transmitting the location data signals to the central server. A plurality of databases having location information are connected to the central server and a processing unit with a tracking software operably connected to the central server, compiles and assembles the location data signals and location information for tracking the objects at the site, thereby establishes a real time location tracking and communication with the objects. The system also enables setting up ad-hoc networks fully functioning on power and signals independent of the primary systems of the site and enhances decision making in real time environment.

An analog open-loop voltage controlled oscillator (VCO) calibration circuit and method for selecting the frequency of the VCO for a phase locked loop (PLL).

A frequency divider module produces a 50% duty cycle divided local oscillation and a 50% duty cycle divided reference signal, wherein the divided signals are substantially equal. A period-to-voltage conversion module converts the divided local oscillation signal and the divided reference signal to voltages proportional to the divided signals. A comparator module produces a frequency adjustment signal based on a comparison of the proportional voltages and couples the frequency adjustment signal to a logic module which produces a frequency compensation signal based on the frequency adjustment signal. The frequency compensation signal functions to adjust the configuration of switched capacitors in a capacitor bank, coupled to the VCO tuned circuit, until the divided local oscillation signal is substantially equal to the divided reference signal.

A searcher detecting signal indicating conditions of propagation paths is detected from incoming waves of a pilot signal transmitted at the highest electric power. In a RAKE reception for one code channel, an interference replica signal functioning as an interference signal for an incoming wave of the code channel to be demodulated in one finger unit is produced from reference signals produced in the other finger units and the searcher detecting signal, an interference removal is performed for a receiving signal according to the interference replica signal, and the demodulation of the RAKE reception is performed. In the demodulation based on a plural code channel, a reference signal is produced in one of the finger units, an interference replica signal is produced from the reference signal and the searcher detecting signal, an interference removal is performed for the receiving signal according to the interference replica signal, and the demodulation based on the plural code channel is performed. Accordingly, a service of a high speed data transmission can be performed without increasing an occupied band as well as a service mainly performing a low speed data transmission.

A signal light fixture for use on a vehicle has a plurality of light-emitting diodes (LEDs) arranged to form an array divided into a first section and a second section, wherein LEDs in the first section emit red light, and wherein LEDs in the second section emit yellow light. A portion of the LEDs in the first section are illuminated to perform a rear tail light function, and all of the LEDs in the first section are illuminated to perform a brake light function. A portion of the LEDs in the second section are illuminated to perform a running light function, and all of the LEDs in the second section are illuminated to perform a turn signal function.

The present invention proposes a SOC integrated circuit, including: a functional interface controller, a JTAG debugging interface controller, a signal multiplexing unit for selecting a functional interface signal or a debugging interface signal and transmitting the selected signal to an external interface, and a signal multiplexing unit for Depending on whether the debugging mode trigger instruction is received, the signal multiplexing unit controls the multiplexing control register for signal multiplexing, several pins, and an external interface for connecting with debugging tools or other devices other than the SOC integrated circuit. Through the signal multiplexing unit and the multiplexing control register, all pins of the present invention can be multiplexed for function application and debugging, and can reduce SOC integrated circuit pin consumption and chip area. And the debugging tool can debug the SOC integrated circuit through the external interface, without dismantling the machine and leading the test signal line, and can debug some low-probability abnormal phenomena, and the effect is better.

A motor vehicle lighting system comprises a lighting switch having a daylight signaling position and two night driving illumination positions, with a running light (or headlight) having a discharge lamp cooperating with a reflector to produce a night driving beam essentially without any cut-off. The running light has a discharge lamp cooperating with a reflector to produce a night driving beam which essentially has no cut-off. The system includes a means such as an absorbent element which, when the lighting switch is put in its daylight signaling position, diverts a fraction of the light intensity of the emitted beam so as to produce a beam of reduced intensity as compared with the same lamp powered under the same conditions.

A millimeter band transmitter transmits one or more indirect path signal waves from the main lobe of a transmit antenna, and a direct path signal wave is transmitted in a side lobe of the transmit antenna. A receiver simultaneously receives each of the indirect and direct path signal waves if the receive antenna is unobstructed. If the direct line of sight path between the transmitter and receiver is blocked, the receiver only receives one or more of the indirect path signal waves.

A portable, palm-sized, Data Acquisition System including an apparatus to measure engine thermo-events, a wiring harness having signals for collecting, recording, and transmitting engine performance data and identifying the engine being monitored, and an acquisition server (DAS) for collecting and transmitting data from the thermo-measuring apparatus and wiring harness, is taught. There also is a Web-server, an Ethernet network interface, software, an SPI bus interface requiring only three signals for communication, and a software system that records, stores, processes, transmits, displays, and analyzes data pertaining to any combustion engine performance and other industrial engine applications. The use of fiber optic cable for electronic communication provides for the DAS to be installed a distance from the engine. The DAS is share-able between several engines, is user friendly, is low cost to manufacture, affordable, and has a flexible signaling feature that works with systems that use, and do not use, telemetry.

In thermography apparatus, a lamp 102 is modulated sinusoidally and a camera 106 captures thermal images at the modulated frequency, but delayed by an adjustable preset delay. A signal delay box 107 is connected between a sinusoidal modulation signal function generator 104 and the camera 106. The delay box introduces a delay to the function generator signal so that the thermal image is captured after a period of time, resulting in an enhanced image.

A controller for indicating whether a previously-detected, acceleration-sensor malfunction no longer exists. The controller includes an electronic memory and an electronic processing unit connected to the electronic memory. The electronic processing module includes a malfunction monitoring module, a failure handling module, and a signal checking module. The signal checking module performs a signal check after the malfunction monitoring module generates the fault signal. The signal check includes executing a signal check function with a longitudinal acceleration signal. Also disclosed is a vehicle including the controller, and a method executed by the controller.

The invention discloses a signal waveform design method for a low probability of intercept radar communication integrated system, which overcomes the problems of poor distance resolution, speed resolution and low probability of intercept performance of a radar communication integrated signal. The method comprises the following implementation steps of (1) acquiring an information chip sequence; (2)establishing a mapping relation between an information chip and ae signal phase; (3) obtaining a phase-coded pulse signal; (4) obtaining a linear frequency-modulated baseband signal; and (5) obtaining a transmitting signal of the low probability of intercept radar communication integrated system. According to the method, the fluctuation of a signal fuzzy function near an original point is inhibited, the distance resolution and the speed resolution of a detection target of the system are improved, the phase agility of the transmitting signal of the radar communication integrated system and thecomplexity of a modulation mode are enhanced, the low probability of intercept performance of the radar communication integrated system is improved, and the method meets the precision requirement ofthe detection target of the radar communication integrated system in a complex electromagnetic environment and the requirement for the low probability of intercept performance of the radar communication integrated system.

Disclosed is an oscillator that relies on redundancy of similar resonators integrated on chip in order to fulfill the requirement of one single quartz resonator. The immediate benefit of that approach compared to quartz technology is the monolithic integration of the reference signal function, implying smaller devices as well as cost and power savings.

A distance measuring device (10) for measuring a distance to an object M of measurement, comprising a source (11) for outputting variable-frequency signals, a transmission means (12) for emitting an electromagnetic wave having the same frequency as that of an output signal from the source (11), a detection means (13) provided between the transmission means (12) and the object M, for detecting the amplitude of a standing wave S formed between the transmission means (12) and the object M and outputting a detection signal, and a signal processor (14) for producing a detection signal function indicative of a detection signal value relative to the output signal frequency to calculate, from its frequency, the distance between the detection means (13) and the object M of measurement.

A method and device substantially cancel at least Multiple Access Interference (MAI) and Inter-Symbol Interference (ISI) while detecting a received spread spectrum signal in a multi-user communication system. For that purpose, a plurality of stages are formed, each comprising processing the received spread spectrum signal through an interference cancelling function to produce an essentially MAI- and ISI-free signal, and processing the essentially MAI- and ISI-free signal through a reconstruct received spread spectrum signal function to produce a received spread spectrum signal essentially free from MAI and ISI. The plurality of stages are cascaded to successively process the spread spectrum signal and improve cancellation of MAI and ISI from the spread spectrum signal.

The invention relates to a method for designing color filters which improve or modify color vision of the human eye. According to the invention a desired opponent signal function to be attained is divided by a real opponent signal function characteristic of the eye color vision to be improved or modified, the negative range of the resulting function is replaced by zero, the whole function is normalized to give a spectral transmission function, and, if desired, one or more section(s) of this spectral transmission function is modified. The invention also relates to color filter means designed by the above method.

A device for waking users of a bus system, wherein a detection means, in particular a counter, is provided, which detects at least one predefined signal feature of the signals transmitted on the bus system and initiates the further wake-up procedure once a predefinable number with respect to the signal feature has been reached.

A touchless vehicle control apparatus includes an array of infrared light-emitting LEDs; an array of infrared light sensors for receiving reflected light from an object in accordance with a time sequence in which one or more of the infrared light-emitting LEDs is activated and outputting a plurality of reflected signals; and a processing unit for receiving the reflected signals, identifying a signal function of time by comparing a predetermined threshold with signal levels of the reflected signals, determining motion of the object by referring to the signal function of time, and directing the execution of one or more pre-defined vehicle commands when the determined motion of the object corresponds to a pre-defined motion associated with a vehicle command.