58results about How to "The output signal is accurate" patented technology

A memory module includes a plurality of memory components mounted on a printed circuit board, and a plurality of passive components embedded within the board directly underneath the memory components to minimize the space occupied by the passive components and the lengths of the required conductive traces. The passive components and the memory components are connected by conductor-filled vias between the contacts of the embedded components and the memory components mounted above them on the board surface. The passive components may be thick film resistors, either series damping resistors or differential damping resistors. By embedding the resistors directly beneath the memory components, there is enough space on the board to provide a set of termination resistors for each of the several memory components on the board, thereby eliminating the need for a single resistor to be shared by two or more memory components, resulting in more precise output signals.

A digital-to-analogue converter (DAC) (1) comprises a digital processing circuit (2) having an input register (10) to which data samples of a digital input signal are written at a data sampling rate (f_s). A delay register (14) holds each data sample for one clock cycle of the data sampling rate (f_s), and a subtracting circuit (15) sequentially produces difference values between consecutive ones of the data samples by subtracting the data sample in the delay register (14) from the input register (12) on each clock cycle of the data sampling rate (f_s). The difference values are sequentially converted to proportional analogue current signals by a current steering DAC circuit (3) which sequentially steers the proportional current signals for the duration of the respective clock cycles of the data sampling rate (f_s) to a predominantly capacitive load impedance (4), which is coupled to ground 8 through a voltage reference source (5) and the voltage developed across the predominantly capacitive load impedance (4) with respect to ground (8) is a continuously linearly interpolated analogue voltage representative of the data sample of the digital input signal.

A light receiving device 12 that receives reflected light condensed by a light receiving condenser means 14 has two first and second electrodes 15, 16 provided on a light receiving surface at prescribed intervals along a baseline that connects a light emitting device 11 with the light receiving device and a resistive region 21 provided between the two electrodes. An electric charge generated at the incident position of light incident on the light receiving surface of the light receiving device 12 becomes a photo current and outputted from the first and second electrodes 15, 16 via the resistive region 21. The resistance value of the resistive region 21 of the light receiving device 12 is distributed so as to be roughly inversely proportional to a distance from the optical axis of the light receiving condenser means 14 to the incident position of a light spot on the light receiving surface.

A dual intercom-camera-interfaced smoke/fire detection system and method includes, inter alia, an interactive panoramic camera communication system operatively responsive to real-time emergency signals. The interactive camera service provider communications network independently and communicatively couples panoramic cameras in real-time to authorized peripheral electronic devices (APEDs) such that an emergency event is independently transmitted and directly viewed in real-time at the APEDs. The interactive camera service provider communications network is independently operable from a real-time emergency signal transmitting mechanism and a real-time emergency signal simultaneous transmitting mechanism, respectively. The emergency event is independently viewed at the APEDs while real-time emergency signals are transmitted to a central monitoring station such that the APEDs independently and visually learn the emergency event at least as early as the central monitoring station non-visually learns the emergency event.

Differential peak detection for outputting a signal indicative of a peak value of an input signal. The input signal is differentially amplified using common mode feedback and a common mode output is thereby output, wherein common mode level of the common mode output is substantially the same as a common mode voltage. The common mode output of such differential amplification is coupled to an input of a first common source input pair, and the common mode voltage and a feedback from the output signal across a sampling capacitor is coupled to an input of a second common source input pair. A summation of respective outputs of the first and second common source input pairs is coupled to an input of a transconductance stage, wherein an output of the transconductance stage controls charging of the sampling capacitor. In this manner, a more accurate output signal is provided.

A solid-state imaging apparatus includes: a defective pixel detector (8) for extracting, from a signal output by a frame-reading solid-state image pickup element (2), pixel data for a target pixel for which a determination is to be made and pixel data for peripheral pixels thereof, and for employing pixel data for a pixel, selected from among the peripheral pixels, in the same filter as the target pixel, to determine whether the target pixel is a defective pixel; and a defective pixel correction circuit (9) for employing the pixel data for the peripheral pixels to correct pixel data for the defective pixel. With this configuration, the output signal of the defective pixel can be corrected without spreading the effect produced by the defective pixel to the peripheral pixels, and a natural image can be displayed.

The motor according to one aspect of the present invention has an output waveform correcting unit for correcting the waveform of the output signal of a magnetic sensor during operation of the electric motor. ID codes for identification purposes are assigned respectively to a plurality of magnetic sensors. The output waveform correcting unit receives, from an external device, output waveform correction values for the magnetic sensors together with the ID codes, and stores the output waveform correction values for the magnetic sensors in memory. The drive system according to another aspect of the present invention has a plurality of electric motors, and a system controller connected to the plurality of motors via a shared communication line. Each electric motor has an identification code register that stores an identification code for identifying each electric motor. The system controller has an individual control mode in which operation of individual motors is controlled by transmitting commands to individual electric motors together with identification codes via the shared communication line.

A measuring device provides a synthesizer device, at least two controlling devices and at least two controlled oscillators. The synthesizer device contains at least one direct digital synthesizer and generates at least two signals of known phase ratio. Signals generated by the synthesizer device form reference signals of at least one controlling device. Signals formed by the controlling devices control the controlled oscillators. The measuring device contains only frequency splitters, which divide by integer division factors.

A physical parameter is measured via an electronic circuit connected to a two capacitor sensor. The circuit includes an amplifier connected to the common capacitor electrode, a logic unit for digital processing amplifier data and supplying a digital measuring signal, a digital-analogue converter for supplying a measuring voltage based on the digital measuring signal, a switching unit for alternately supplying the measuring voltage to the first and second fixed capacitor electrodes, and a regulated voltage for negative biasing or a low voltage for positive biasing from a voltage supply source. A first phase consists in biasing the first fixed electrode with the measuring voltage from first binary word and reference voltage, and the second fixed electrode with low voltage, and a second phase consists in biasing the second fixed electrode with measuring voltage from second binary word, which is reverse of the first binary word, and the reference voltage.

The method is for measuring a physical parameter by an electronic circuit connected to a two differential capacitor sensor having two fixed electrodes and a common moving electrode. The electronic circuit supplies first and second digital measuring signals. Each measuring cycle consists on biasing the electrodes by the measuring voltage based on the first digital signal, connecting the fixed electrodes to a supply voltage source for a first biasing, biasing the electrodes by the measuring voltage based on the second digital measuring signal, and inversely connecting the fixed electrodes to a supply voltage source for a second biasing. In first successive measuring cycles, the first and second digital signals are adapted to each cycle by a large step value. In second successive measuring cycles, the first and second digital signals are adapted to each cycle by a small step value until the end of the conversion.

The invention discloses a sensor, and particularly relates to a non-contact annular magnetoelectric rotary encoder. The encoder comprises an annular encoder main body I, and an acquisition head II which is arranged correspondingly to the annular encoder body I, wherein a clearance is formed between the annular encoder main body I and the acquisition head II, the annular encoder main body I comprises a bearing ring body, a magnetic ring stuck and sleeved on the upper edge part of the bearing body, and a protecting cover arranged outside the bearing ring body and the magnetic ring and playing a role of protecting the magnetic ring; and a magnetic induction chip is arranged in the acquisition head II. The magnetoelectric principle is adopted by the encoder; the defects of easiness in cracking of a code disc, high requirement on precision, complex mechanical structure, complex mounting and adjusting process and the like of the traditional photoelectric encoder are overcome; the generation, the receiving and the processing of a signal are realized by selecting and using a magnetoelectric integrated chip; the complex debugging process of the traditional photoelectric encoder is omitted; the production efficiency and the performance of products are greatly improved; and the non-contact annular magnetoelectric rotary encoder which is small in size, high in reliability, resistant in vibration, high in frequency response, low in cost, high in precision, low in error and long in service life is provided.

The present invention provides a circuit which is configured to apply variable hysteresis to an input signal, where the level of hysteresis applied to the input signal is dependent upon the frequency of the input signal. Use of this circuit in a vehicle's anti-lock braking system allows for more efficient and effective braking.

The invention relates to a non-contact type gear sensing device which comprises a gear shifting pulling arm and a gear sensor, wherein the gear shifting pulling arm is fixedly connected with a magnetic induction device; the gear sensor is arranged in the position within the induction range of the magnetic induction device; the gear sensor and the magnetic induction device are respectively and independently mounted; when gear shifting is performed, the magnetic induction device rotates along with the gear shifting pulling arm, the position of the magnetic induction device relative to the gear sensor is changed, and the change of magnetic flux of the magnetic induction device is received by the gear sensor, so that monitoring of the gear sensor to the change of gear information is realized, accuracy and stability in an output signal are realized, and the service life of the gear sensor is long.

A material level detection sensor (10) having a continuous ultrasonic sensor (12) and a capacitive proximity sensor (13). The capacitive proximity sensor detects the material only when the material is at or within the dead zone (15) of the ultrasonic sensor, at which point it switches the ultrasonic sensor off. The ultrasonic sensor transmits a level detection output signal until it is turned off by the capacitive proximity sensor. The capacitive proximity sensor transmits a level detection output signal only when it detects the material, and it will switch the ultrasonic sensor on when it does not detect the material. The material level detection sensor transmits only a single level detection output signal at any given time, providing an accurate and reliable estimate of material level. The device is particularly useful for measuring inventory and consumption of particulate solids and powders in bins or silos (11).

A method for automatic calibration of a position detection sensor of an automatic transmission including a gearshift actuator, the method including registering, using the position detection sensor, the position of the gearshift actuator upon power-up of the transmission; and performing a calibration of the position detection sensor if the registered position of the gearshift actuator is outside a predetermined expected position range of the gearshift actuator or within a predetermined abnormal position range of the gearshift actuator.

A signal compensation circuit compensates for direct-current offset of an input signal by amplifying the input signal with an amplifier having a variable direct-current offset. A low-speed negative feedback loop charges and discharges a capacitor in an integrating circuit according to the direct-current component of the amplified signal. A high-speed negative feedback loop charges and discharges the same capacitor at a faster rate when the amplified signal goes outside an allowable amplitude range. The capacitor potential is used to control the direct-current offset of the amplifier. The allowable amplitude range is adjusted according to the amplitude of the amplified signal. High-speed compensation can thus be combined with a tolerance for runs of identical code levels in the input signal.

A multi-gas/gas-mixture or liquid flow sensor apparatus utilizing a specific media calibration capability. The flow sensor can be coupled with an Application Specific Integrated Circuit (ASIC) that incorporates a signal conditioner and a memory module. The signal conditioner provides a high order calibration and signal processing of flow signals from the sensor to a processed signal output representative of the flow. The processed signal output can be stored in the memory module. A correction factor can be calculated and stored in the memory module in response to the stored values of the processed signal output, which tends to linearize the relationship between the flow rate and the processed signal output of a measuring system. The correction factor and/or the processed signal output provided by the signal conditioner can be utilized by the measuring system.