719results about How to "Suppression of distortion" patented technology

Disclosed is a non-flat liquid crystal display (LCD) element having a liquid crystal, a sealing wall and paired substrates opposed to each other such that a major surface of the LCD element has a non-flat form. In an aspect, spacers are disposed between the substrates, and a spacer density in a predetermined region is different from that in at least a portion of the other region. In another aspect, resin structures are disposed between the substrates and are adhered to the substrates, and a resin structure adhesion area, per unit area of the substrate, with respect to the substrate in a predetermined region is different from that in at least a portion of the other region. In further another aspect, at least one of pixel form, size and arrangement pitch in a predetermined region is different from that in at least a portion of the other region. In further another aspect, the resin structures are disposed between the substrates, and at least one of resin structure form, size and arrangement pitch in a predetermined region is different from that in at least a portion of the other region. Also disclosed is a method of producing a non-flat LCD element. The method includes the steps of: holding a liquid crystal between paired flat substrates to produce a flat LCD element having an entirely flat form; and deforming the flat LCD element into a predetermined non-flat form.

A system and method for tracking the position and orientation of a probe. Three at least partly overlapping planar antennas are used to transmit electromagnetic radiation simultaneously, with the radiation transmitted by each antenna having its own spectrum. A receiver inside the probe includes sensors of the three components of the transmitted field, with sensors for at least two of the three components being pairs of sensors, such as coils, on opposite sides of a common reference point. In one variant of the receiver, the coils are collinear and are wound about cores that are mounted in pairs of diametrically opposed apertures in the housing of the probe. Each member of a pair of coils that sense the same component of the transmitted field is connected to a different input of a differential amplifier. The position and orientation of the receiver relative to the antennas are determined noniteratively.

A golf club head includes: a head body including a crown portion having a plurality of openings, a face portion, a toe portion, a heel portion and a sole portion; a crown part mounted to the head body so as to close the openings, and a support portion provided between the openings for supporting the crown part. The support portion is X-shaped, for example.

The invention relates to waveguide optical modulators wherein two or more waveguides are modulated with specific modulation strengths using a single straight signal electrode or a single multi-segment signal electrode. Modulation strengths for each of a plurality of waveguides modulated by a single multi-segment electrode are matched over a wide modulation frequency range. Linearized output characteristics with respect to second and third order distortions arc achieved in one aspect of the invention.

Coefficient generator generates a crosstalk coefficient that is a predetermined value and that is used to calculate the amount of crosstalk of an echo. Converter uses either the output signal of a sound pickup device or the signal obtained by subtracting the output signal of an echo canceller from the output signal of the sound pickup device as a first signal, corrects the first signal based on the crosstalk coefficient generated in coefficient generator, and produces a near-end signal obtained by removing the echo from the first signal.

An illumination optical system includes a first optical unit that collects light emitted from a light source; a reflective integrator that has a plurality of cylindrical reflection surfaces, whose generating lines are oriented in a uniform direction, and forms a plurality of linear light sources by using the light emitted from the first optical unit; a pair of flat mirrors that are disposed parallel to the generating lines so as to face each other with the plurality of linear light sources residing therebetween; an aperture stop that is disposed perpendicular to the generating lines and has an opening for allowing the light emitted from the plurality of linear light sources to pass therethrough; and a second optical unit that integrates beams of the light emitted from the plurality of linear light sources that have passed through the opening one on top of another in an illumination target plane.

This invention provides an optical image capturing lens system comprising: a negative first lens element having a convex object-side surface and a concave image-side surface at the paraxial region; a positive second lens element; a negative third lens element; a positive fourth lens element having a convex image-side surface at the paraxial region; and a negative plastic fifth lens element having a convex object-side surface at the paraxial region as well as a concave at the paraxial region and convex at the peripheral region image-side surface, at least one of the object-side and image-side surfaces being aspheric. The optical image capturing lens system of the present invention effectively increases the angle of view to a proper range and suppresses the distortion. In addition, the present invention has a tighter arrangement of the lens elements and a smaller back focal length, and therefore is more appropriate for the compact device.

The present invention relates to a class D audio amplifier comprising a pulse width modulator, an adjustable loop filter and a feedback loop. The pulse width modulator generates a first set of pulse width modulated control signals at an adjustable modulation frequency for respective switch control terminals of a first output driver. A controller of the class D audio amplifier is configured to control frequency response characteristics of the adjustable loop filter based on a frequency setting of the adjustable modulation frequency.

A first signal path including a first LNA 3 and a second signal path including an antenna damping circuit 4 and a second LNA 5 are connected in parallel, and switching into either the first signal path or the second signal path is carried out to control a gain of a received signal. When a level of the received signal is higher than a first threshold, it is once attenuated by the antenna damping circuit 4 and is then amplified by a necessary quantity through the second LNA 5. Thus, the gain of the received signal is controlled in a total of the attenuation and the amplification. Consequently, a level of a signal to be input to the second LNA 5 is reduced to cause a distortion of the signal in the amplification with difficulty.

A bag-filling packaging machine in which supplied bags 1 are gripped by pairs of grippers 2 disposed on the periphery of an intermittently turning round table 3, and the bags, at stopping positions, are successively subjected to prescribed packaging operations with the gas inside the bags being replaced during that process, wherein a pair of guide members 15 and 16 for keeping the bag mouth opened is provided on the table 3 in correspondence with each of the gripper pair, and guide members 15 and 16 are connected to an inactive gas supply source and have gas blow-out ports at the tip ends that are inserted inside the bags, thus allowing the guide members 15 and 16 to not only keep the bag mouth opened but also function as gas blow-in nozzles.

A system is operated to transmit signals from a transmitter to a receiver. The transmitter is muted. A receiver transfer function for the receiver is adjusted so that an output signal of the receiver is minimized. A transmitter transfer function of the transmitter is set to be inverse to the adjusted receiver transfer function.

The present invention relates to a class D audio amplifier comprising a pulse width modulator, an adjustable loop filter and a feedback loop. The pulse width modulator generates a first set of pulse width modulated control signals at an adjustable modulation frequency for respective switch control terminals of a first output driver. A controller of the class D audio amplifier is configured to control frequency response characteristics of the adjustable loop filter based on a frequency setting of the adjustable modulation frequency.

A device implements a data processing method for an optical FTIR-based touch system. The touch system defines detection lines across a surface portion of a panel by propagating light inside the panel from a plurality of incoupling points to a plurality of outcoupling points, such that each location on the surface portion is illuminated by incident light rays. At least one light detector is coupled to the outcoupling points to generate an output signal. The device obtains signal values for the detection lines from the output signal and processes the signal values to at least partly compensate for variations in the apparent interaction among the subset of detection lines that interact with an object on the surface portion.

The present invention relates to a signal processor and methods of using a signal processor. In one aspect, the present invention relates to a signal processor that includes a pulse width modulator having a clock rate, and also includes a digital filter configured to receive an output of the pulse width modulator, wherein the digital filter samples the output at the clock rate to suppress the distortion. In another aspect, the present invention relates to a method including modulating a first pulse code modulated signal having a first resolution into a second pulse code modulated signal having a second resolution that is smaller than the first resolution. This aspect further includes modulating the second pulse code modulated signal into a third signal that includes a plurality of pulses in time having a clock rate, and filtering in a digital domain the plurality of pulses in time to suppress a distortion in the third signal.

A device implements a data processing method for an optical FTIR-based touch system. The touch system defines detection lines across a surface portion of a panel by propagating light inside the panel from a plurality of incoupling points to a plurality of outcoupling points, such that each location on the surface portion is illuminated by incident light rays. At least one light detector is coupled to the outcoupling points to generate an output signal. The device obtains signal values for the detection lines from the output signal and processes the signal values to at least partly compensate for variations in the apparent interaction among the subset of detection lines that interact with an object on the surface portion.

This invention enables, for example, reduction of motion blur in a hold-type display device and reduce flicker in an impulse-type display device by a simple process. For this purpose, an LPF filters a frame of input image data (A[i]) to generate low-frequency image data (L). A subtractor and an adder generate high-frequency image data (SH). Another adder adds the low-frequency image data (L) from a delay circuit to subsequent low-frequency image data. A divider halves the sum to generate low-frequency averaged image data (SL). A switch alternately outputs the high-frequency image data (SH) and the low-frequency image data (SL) every time a frame of image data is input. As a result, the apparatus of this invention can generate output image data having a frame rate twice that of the input image data.