32results about How to "Minimizing influence of noise" patented technology

Disclosed is a velocity estimator using a level crossing rate. The velocity estimator comprises a power calculator for calculating power values of a signal received from a mobile terminal; a mean power calculator for calculating mean power values for M power values according to a predetermined down-sampling factor M; an interpolator for interpolating the mean power values according to a predetermined interpolation ratio L; a root mean square calculator for calculating a root mean square value using an output of the interpolator; a level crossing counter for counting a level crossing frequency representing how many times the output of the interpolator crosses a level crossing threshold determined according to the root mean square value, for a predetermined time period; and a velocity calculator for calculating a velocity estimation value of the mobile terminal using the level crossing frequency.

A touch panel device and a method for detecting a contact position are provided. The touch panel device includes a touch panel including a first touch pattern, the first touch pattern having a plurality of first touch pads connected in series; and a touch sensor for applying a clock signal to one terminal of the first touch pattern, receiving a first delayed clock signal from the other terminal of the first touch pattern, and generating contact position data corresponding to a contact position of an object using a difference in delay time between the clock signal and the first delayed clock signal. Thus, since the plurality of touch pads are connected in series, the contact position of the entire touch panel can be sensed with only one touch sensor, and the touch pad has a greater area than the connection line for a distinguished difference in resistance between the touch pad and the connection line, such that the contact position can be accurately detected.

A light-detecting element, an analog-to-digital converter circuit, and a parallel-serial converter circuit are mounted on a substrate, using a thin film transistor, of an active matrix-type display device, and when a circuit is selected by an external chip-select signal, the luminance is adjusted by transmitting a signal of the light-detecting element, converted into digital data, to a luminance control circuit in sync with a clock signal.

An inverter controlled generator set including: a power supply unit that uses a generator driven by an engine as a power supply to output a DC voltage; an inverter device that converts the output voltage of the power supply unit into an AC voltage; and a rotational speed control unit that controls a rotational speed of the engine so as to be kept at a target rotational speed suitable for a load applied to the inverter device, wherein the rotational speed control unit is comprised so that a settling time when the rotational speed of the engine is caused to converge to the target rotational speed in a state where the load is above a set value is longer than a settling time when the rotational speed is caused to converge to the target rotational speed in a state where the load is below the set value, in order to minimize an operation sound of the engine when the load is intermittently driven.

The invention is to provide a video picture display unit capable of reducing discomfort given to a user by restraining influence of a noise of fans after the power of the unit is turned off. A timer setting when the power is turned off (off timer setting or sleep setting) is stored in a setting portion of a controller. A decision portion decides as to whether the timer setting is present or non-present, and in cases where the power is turned off by the timer setting, the operation control portion transmits a control signal to a driving circuit so as to cause a fan or a fan to effect low speed rotating operation.

An organic light emitting diode display is disclosed. The organic light emitting diode display includes a display panel including a plurality of pixels, a plurality of sensing units configured to integrate current information of the pixels through a plurality of sensing channels connected to sensing lines of the display panel and output a first sensing value, a reference sensing unit configured to integrate previously set reference current information and output a reference sensing value, a calculation block configured to calculate the first sensing value and the reference sensing value, remove a common noise component from the first sensing value, and output a second sensing value, and an analog-to-digital converter configured to convert the second sensing value into a digital sensing value.

An ultrasonic diagnostic apparatus includes: a transmitting section for driving an ultrasonic probe sending out an ultrasonic transmitted wave toward a body tissue of an organism; a receiving section for receiving an ultrasonic reflected wave, produced by getting the transmitted wave reflected by the body tissue, through the probe; a phase detecting section for detecting the phase of the reflected wave; and a computing section for calculating the magnitudes of positional displacement at multiple measuring points on the body tissue based on a signal obtained by the detecting section and calculating the greatest thickness difference between two of the measuring points and / or an elastic property based on the magnitudes of positional displacement. The computing section calculates the maximum and minimum thicknesses or thickness variations between the two points based on the magnitudes of positional displacement at the two points during a part of one cardiac cycle, and calculates the greatest thickness difference and / or elastic property as the difference between the maximum and minimum values.

A power converter (1) includes: planar semiconductor modules (10) each having a resin sealing part (16) in which a semiconductor element (11), conductive members (12, 13, and 14), and a signal terminal (15) are sealed with a resin; a cooler (20) that holds the plurality of semiconductor modules (10) in a laminated manner; and a cover (30) that covers the semiconductor modules and the cooler, wherein at least a part of the resin sealing part (16) and the cooler (20) are supported by support media (41 and 42) that extend from the cover (30) so that facing parts of the resin sealing part and the cooler with respect to the cover (30) is positioned in proximity to the cover, and the conductive members and the signal terminal protrude from the resin sealing part in a direction away from the cover.

A wiring structure for a head suspension is provided. The head suspension has a head to write and read information to and from a recording medium, a load beam to apply load onto the head, a device arranged on the head and operating on low-frequency signals to achieve a function other than the information write / read function at the head, and a flexure attached to the load beam and supporting the head, the flexure including a base material made of a conductive thin plate and a base insulating layer formed on the base material. The wiring structure has a write wiring and a read wiring formed on the base insulating layer and connected to the head, a device wiring formed on the base insulating layer and connected to the device, an intermediate insulating layer on the base insulating layer. The device wiring is formed wider than the read wiring and includes positive / negative wires that are laid one on another with the intermediate insulating layer interposed between the positive / negative wires.

A receiving apparatus of a high speed digital data communication system includes: a mobile station modem (MSM) for judging a modulation method according to a data rate of a received signal and a position of a data pointer; a controller for controlling a control signal with respect to a position change of the data pointer on the basis of the information collected by the MSM; and a demodulator for determining a position of the data pointer according to the control signal outputted from the controller and demodulating a signal. By varying a position interval of data pointers according to a data rate, an error probability due to a noise can be reduced and a speech quality can be improved.

The present invention relates to a capacitive touch sensor, and relates to a touch sensor which precisely senses whether there is any touch, without using a reference voltage or reference current in the touch sensor but by converting data between neighboring channels into two types of data having different polarities and by comparing the same. The invention makes it possible to miniaturize a structure of the touch sensor and to ensure compatibility allowing application to a variety of touch panels by minimizing the influence of noise from the outside environment. More specifically, the present invention provides a capacitive touch sensor comprising: at least one receiver channel RX which outputs analog data of a voltage for change in capacitance caused by presence or absence of a transmitter channel TX pulse impression and touch; at least one receiver unit which is connected to the receiver channel RX, receives the analog data of the voltage, and outputs bipolar pulse width modulation signals; a counter which periodically operates in accordance with reset RST signals; and at least one flip-flop which outputs, as digital data, the bipolar pulse width modulation signals input from the receiver unit, by using count values received from the counter.

An embodiment provides a touch sensing device configured to divide one driving cycle into two parts and to summate or subtract touch sensing data regarding respective parts, thereby removing periodic noise.

The present invention discloses a wavelength-division multiplexing passive optical network (WDM-PON) capable of high-bandwidth transmission for optical signals by using modulation format having high spectral efficiency. The WDM-PON according to the present invention provides a larger capacity and higher bandwidth transmission economically (at lower costs) by using a modulation format where spectral efficiency (a transmission bit number per a unit band width) is high, while using a low noise part of a light source.

Disclosed is a phase clock generator. The phase clock generator can include transistors and a buffer. The transistors are connected between a power line and a grounding line and are provided in a form of a 4×N matrix to receive a plurality of phase-delayed signals through their gate terminals. Four transistors can form a unit column between the power line and the grounding line. From ground line to power line, the first two transistors of the unit column provide a pair of NMOS transistors, and the second two transistors provide a pair of PMOS transistors. The buffer is connected to a line, which is provided between the pair of the NMOS transistors and the pair of the PMOS transistors forming the unit column, to transmit a clock signal.

In some embodiments, a capacitance discrimination circuit includes first and second capacitors, a comparator configured to compare a first voltage of the first capacitor and a second voltage of the second capacitor, a counter circuit configured to perform a count operation based on a comparison result of the comparator, a charge circuit configured to charge the first and second capacitors, and a control circuit configured to control the charge circuit so as to charge either the first capacitor or the second capacitor based on the comparison result of the comparator. The capacitance discrimination of the first and second capacitors is performed based on count values of the counter circuit. The capacitance discrimination circuit preferably includes a discharge circuit to discharge electric charges stored in the first and second capacitors in accordance with a discharge signal from the control circuit.

A display device according to an aspect of the present disclosure includes a lead-out line disposed between the data lines in the second direction, first and second photo touch sensors disposed in left and right pixels of the lead-out line and electrically connected to the lead-out line to transmit a touch sensing signal, first and second sensing data lines disposed in the second direction and applying first and second sensor data signals to the first and second photo touch sensors and first and second sensing gate lines disposed in the first direction and applying first and second sensor gate signals to the first and second photo touch sensors.

An image processing apparatus includes a processor that sharpens an input image on the basis a difference between a filter and a low pass filter, which are generated using of information regarding a point spread function of an optical system corresponding to an image pickup condition of the optical system, or a difference between an image obtained by applying the filter to an input image generated by imaging through the optical system and an image obtained by applying the low pass filter to the input image.

Disclosed is a video display appliance from which a video signal processing unit and a PC signal processing unit are separated and to which the separated signal processing units are detachably connected or connected by a communication cable. The video display appliance includes an interface receiving a digital video signal to be displayed on the panel and a detection signal indicating a connection state of the signal processing apparatus from the signal processing apparatus, a microcomputer for controlling operation of the video display appliance according to the detection signal transmitted from the interface, a scaler for converting a video signal transmitted from the interface to match a resolution of the panel under the control of the microcomputer, and a driving circuit for driving the panel by using the video signal inputted from the scaler. The signal processing apparatus can be detachably connected to the video display appliance.

An embodiment provides a touch sensing device configured to divide one driving cycle into two parts and to summate or subtract touch sensing data regarding respective parts, thereby removing periodic noise.