61 results about "Analog processing circuits" patented technology

A circuit comprising a digital processor, analogue processing means, a digital to analogue converter for converting digital values output from the digital processor into analogue values which are processed by the analogue processing means, and an analogue to digital converter for converting resulting analogue values into digital values for input to the digital processor, wherein the analogue processing means comprises one or more analogue processors, and the circuit is dynamically reconfigurable under the control of the digital processor, such that analogue values are processed according to a first function by the analogue processing means, and following reconfiguration, analogue values are processed according to a second function by the analogue processing means.

A first clamping unit clamps a base voltage of an input image signal to a predetermined reference voltage. A sampling-and-holding unit samples and holds the image signal after clamping or a reference signal that becomes the base voltage of the image signal. An amplifying unit amplifies the image signal sampled and held by the sampling-and-holding unit. An analog-to-digital converting unit converts the image signal after amplification into a digital image signal. A second clamping unit clamps the reference signal to a predetermined voltage.

A driver apparatus is provided for controlling a light source array comprising at least first and second light sources, the light source array used for illuminating a scan region on a target object, wherein light reflected from said target object is captured by a detector. The driver apparatus comprises a single integrated circuit comprising processing means for processing image data received from the detector, a switching array comprising at least first and second switches for switching the respective first and second light sources, and a current source for controlling the flow of current through the light sources. In this way the LED switching circuitry that controls an LED array is placed on the same integrated circuit (i.e. monolithic circuit) as the analogue processing circuitry that processes the image data, with the current source controlling the flow of current through the LEDs in the LED array. The current source has the advantage of avoiding rapid changes or slope discontinuities in the current flowing through the LEDs, which would otherwise cause unwanted transient signals. A shunt path comprising a switching device may be provided in parallel with the LED array and switching array. The shunt path has the advantage of enabling the switching sequence from one LED to another to be controlled such that a substantially constant current is drained from the supply (subject to any differences in the inherent current drawn by the Red, Green and Blue LEDs, respectively).

An imaging device capable of detecting differences with low power consumption is provided. The imaging device includes a pixel including a photoelectric conversion element and a transistor; an analog processing circuit; and a digital processing circuit. The imaging device is operated in a first mode and a second mode. In the first mode, the analog processing circuit detects a difference between first imaging data taken by the pixel and second imaging data taken by the pixel and generates a trigger signal on the basis of the value of the difference. In the second mode, the digital processing circuit converts third imaging data taken by the pixel into digital data. Switching from the first mode to the second mode is performed on the basis of the trigger signal.

An imaging device includes a pixel; a digital circuit; and an analog processing circuit including a constant current circuit, a current comparison circuit, and a control circuit. The pixel is capable of outputting differential data. The constant current circuit is capable of supplying a first current corresponding to the differential data, in accordance with a first control signal. The current comparison circuit is capable of supplying a second current that flows through the constant current circuit in accordance with a change in the differential data. The current comparison circuit has a function of setting a determination signal active depending on whether to supply the second current to the constant current circuit. The control circuit has a function of controlling the constant current circuit and the current comparison circuit to stop their functions as the determination signal becomes active. The digital circuit operates as the determination signal becomes active.

The invention discloses a concrete internal temperature detection device based on induction principle including the devices buried inside and outside of concrete. The internal device includes temperature sensor, the second CPU, modulation circuit and the second coil, which is used to receive and process the internal temperature information, and code the information for the signals external device can identify to send out. The external device includes the first coil, oscillation power amplification circuit, analog processing circuit, the first CPU and a communication interface, which are used to receive data from internal device, decode them to communicate with PC and provide energy for the internal device.

An analog front-end circuit includes an analog processing circuit, an A/D converter, and a timing generator that generates a plurality of control signals that are supplied to an image sensor. The timing generator includes an event information memory, and a control signal output circuit that generates the control signals based on information read from the event information memory and outputs the generated control signals. The event information memory stores a pixel number and change event occurrence information at each address. The change event occurrence information specifies a control signal that undergoes a signal level change event at the pixel number. The control signal output circuit generates the control signals based on the pixel number and the change event occurrence information read from the event information memory and outputs the generated control signals.

A semiconductor device with an arithmetic processing function is provided. In the semiconductor device, an imaging portion and an arithmetic portion are electrically connected to each other through an analog processing circuit 24. The imaging portion includes a pixel array 21 in which pixels 20 used for imaging and reference pixels 22 used for image processing are arranged in a matrix, and a row decoder 25. The arithmetic portion includes a memory element array 31 in which memory elements 30 and reference memory elements 32 are arranged in a matrix, an analog processing circuit 34, a row decoder 35, and a column decoder 36.

The invention discloses a fission chamber output signal digital processing system and a method thereof, relates to the technical field of nuclear reactor. The system contains a preamplifier circuit and a digital processing device, wherein the digital processing device contains a signal processing unit, a high-speed analog signal acquisition unit and a signal output unit. The high-speed analog signal acquisition unit is respectively connected with the preamplifier circuit and the signal processing unit and is used for acquiring an output signal of the preamplifier circuit and converting the output signal into a digital signal for outputting. The signal processing unit is connected with the high-speed analog signal acquisition unit and is used for determining the root-mean-square value of the digital signal acquiring neutron flux according to the root-mean-square value and a calibration coefficient of preset neutron flux measuring range. According to the invention, circuit is simplified, problems such as temperature drift of components and noise in the analogue processing circuit are avoided, precision of the measurement result is raised, and stability of the system is increased.

An absolute position measurement capacitive grating displacement measurement method, a sensor, and an operating method of the sensor are provided. In the measurement method, a drive signal having wave properties is used to excite a transmission grating, and displacement of a measured position in each wavelength is transformed into an initial phase of a time fundamental wave. The displacement of the measured position in each wavelength is acquired through an addition counter. A signal having wave properties output by a drive signal generator of the sensor is connected to a transmission grating, the master clock of an oscillator is connected to each circuit, an output of a reception grating is connected to a synchronous capture circuit through a signal selection switch and an analog processing circuit; and the synchronous capture circuit is connected to a controller, an addition counter, and a Random Access Memory (RAM). The controller is connected to all components. In the operating method of the sensor, an interface unit starts a measurement unit, a controller coordinates operation of all circuits, and after measurement of displacements in coarse, medium, and fine wavelengths is successively completed, the interface unit turns off the measurement unit, performs processing, and displays the measurement result. The circuits are simple, easy to control, and easy to be realized, and have high precision.

A measurement instrument comprises a sensor circuit comprising a drive circuit for transmitting a pulse signal at a target of interest and a receive circuit receiving reflected echoes of the pulse signal and developing an analog signal representative of the reflected echoes. An analog processing circuit is operatively coupled to the sensor circuit for receiving the analog signal and comprising a gate for selectively transferring the analog signal to a comparator that compares the gated analog signal to a select threshold level to develop a data signal representative of location of the target of interest. A programmed digital processing circuit is operatively coupled to the sensor circuit and the analog processing circuit and comprises a measurement module to control the drive circuit and evaluate the data signal to determine material location. An echo processing module periodically evaluates a digital representation of the analog signal to determine an expected window time and expected amplitude of a reflected echo representing the target of interest and developing a gate control signal to control the gate based on expected window time and developing the select threshold level based on the expected amplitude.

A thermocouple high-temperature testing system comprises a tungsten-rhenium thermocouple, an analogue processing circuit, an A/D converter, an SRAM (static random access memory) chip, a CPLD (complex programmable logic device) chip, a singlechip, a cool end compensation temperature sensor, a USB interface and a computer. The thermocouple high-temperature testing system provided by the invention is a miniaturized testing system which integrates a sensor, an adaptive magnifier, an A/D converter, a memorizer, a control circuit, an interface circuit and a minicell together. In the system, SRAM serves as a memorizer, after testing, data reading is achieved through the USB interface, and data information can be recorded, collected and measured objectively. The tungsten-rhenium thermocouple has the advantages of short responding time, wide measuring range, capability of testing a high-temperature section with the temperature higher than 2000 centigrade, simplicity and reliability in overall system operation, and accurate measurement, thereby being capable of ensuring the temperature measuring accuracy.

A hit command processing system for an electronic instrument includes: an angular velocity sensor; an analog processing circuit which receives the analog signal output from the angular velocity sensor, converts the analog signal into a digital signal, and outputs the digital signal as a rotational angular velocity value; a hit input detection section which receives the rotational angular velocity value output from the analog processing circuit, and determines whether or not a hit input is performed to an electronic instrument based on a change in the rotational angular velocity value; and a hit command execution section which executes a command associated with the hit input when the hit input detection section has determined that the hit input has been performed.

Pipeline analog-to-digital converters (ADCs) are commonly used for high frequency applications; however, operating at high sampling rates will often result in high power consumption or tight timing constraints. Here, though, an ADC is provided that allows for relaxed timing (which enables a high sampling rate) with low power consumption. This is accomplished through the use of multiplexed, front-end track- and-hold (T/H) circuits that sample on non-overlapping portions of a clocking signal in conjunction with ''re-used'' or shared analog processing circuitry. Parallel track- and-hold (T/H) circuits (304, 306) receive an analog input signal (AIN or prior residue) and are clocked at half clock cycles (CLK/2) by clocking circuit 303 to sample/hold on non- overlapping logic phases. The T/H circuits (304, 306) are respectively coupled to analog-to-digital converter (ADC 310) through multiplexer (308) and to digital-to-analog converter (DAC 312), adder (314) and amplifier (316) to perform analog processing to resolve sampled signals for digital output circuit (104) and to generate a residue signal (ROUT).