6 results about "Noise suppression" patented technology

A method of determining an angle by an encoder includes generating a first angle data based on a rotation of a bipolar magnet and a second angle data based on a rotation of the multipolar magnet; determining a first waveform signal based on the first angle data and a second waveform signal based on the second angle data; converting the first waveform signal into a third waveform signal having a cycle similar to the second waveform signal; calculating an angle result value as a function of the second angle data and a determined value about a location of a rotation cycle of the multipolar magnet based on a difference between the second waveform signal and the third waveform signal; and determining an absolute angle corresponding to the calculated angle result value based on stored angle data.

A noise suppression apparatus includes a body portion including a plurality of nested channels, each channel of the plurality of nested channels including a first end opening and a second end opening, and a surface portion including each first end opening and each second end opening of each channel.

A band-limited image signal generating unit decomposes an input image signal into a plurality of band-limited image signals, each representing an image having different frequencies. An index value obtaining unit obtains an index value indicating a level of noise suppression based on data representing spatial frequencies as well as an evaluation value representing local contrast at a pixel of interest in band-limited images and data representing an X-ray dose. A noise suppression processing unit performs noise suppression processing on each pixel of each of band-limited images based on the index value. A processed image generating unit obtains a processed image, in which noise has been suppressed, by adding signals obtained by subtracting processed band-limited image signals, of which noise has been suppressed, from the band-limited image signals together, extracting a noise image signal, and subtracting the noise image signal from the input image signal.

The invention relates to a switching noise suppression circuit integrated on an A/D (analog/digital) converter chip. The switching noise suppression circuit contains a positive reference path resistance capacitance (RC) network and a negative reference path RC network. The two RC networks are used to restrain the simultaneous switching noise (SSN) noises of the positive reference VREF+ and negative reference VREF- of an assembly line, thus the spurious free dynamic range (SFDR) of the A/D converter of a high speed high precision assembly line can be increased from 30-40dB to 80-90dB and the dynamic performance of the A/D converter of the assembly line can be greatly increased. The circuit of the invention can be widely used in the A/D converter of the high speed high precision assembly line.

The present invention provides an equalizing device, an equalizing method and a receiving device, which can correct the distortion of the received signals correctly. As a solution means, the equalizing device and the receiving device possess a given signal supply part (12) for supplying a given signal (pn[k]), a correlation calculating part (11) for generating a correlation sequence (c) representing the correlation between a receiving signal (R0) and the provided given signal; a discrete Fourier transformation part (13) for carrying out the discrete Fourier transformation on the correlation sequence (c) and generating a discrete Fourier transformation result (Fc); a self-correlation noise suppression part (14) for multiplying the discrete Fourier transformation result (Fc) by a self-correlation noise suppression coefficient (G-1), and generating a transmission result estimation result (Fh); and a distortion correcting part (15) for correcting the distortion of the receiving signal by the transmission result estimation result (Fh), wherein the self-correlation noise suppression coefficient (G-1) is the coefficient obtained by calculating a self-correlation matrix (W) of the supplied given signal.