38results about How to "Susceptible to noise" patented technology

A method of transmitting video images. The method includes providing a high definition video stream, compressing the video stream using an image domain compression method, in which each pixel is coded based on a vicinity of the pixel and transmitting the compressed video stream over a fading transmission channel.

A display device of the invention includes a display panel 10 and a touch panel 22. A detector circuit 50 has switches 411 and 412. Switches 411 and 412 are alternately turned on and off repeatedly in the setting period. Touch detection is performed during a counting period that follows the setting period on the basis of required time until a voltage at the node reaches a reference voltage while the switch 411 is turned off and switch 412 is turned on. Common voltage changes in the setting period while switch 411 is turned off and switch 412 is turned on.

Full-color images of low-light scenes are generated by the systems and methods described herein using only two light channels. An array of photosensitive pixels includes two sets of pixels, the first sensitive only to light associated with a first light channel, the second only to light associated with a second light channel. Thus the first set of pixels generate a first set of electrical signals in response to incident light within the first light channel, and the second set of pixels generate a second set of electrical signals in response to incident light within the second light channel. An image processor receives the first and second sets of electrical signals and generates a full-color image of the scene by processing only signals generated by the first and second sets of pixels.

A downsampled adaptive filter is used to find the impulse response of a home theater system. Downsampling yields higher maximum measurable distance for given filter length. By using a Least-Mean-Square (LMS) adaptive filter, almost anything can be used as the source noise. While downsampling may decrease the resolution of the distance measurement, Adaptive Filtering allows a much broader range of test signals, as opposed to MLS (Maximum Length Sequence) in which the test signal defines the technique (a pseudo-random Maximum Length Sequence.)

A Hall element is provided which has a high sensitivity and contributes to an improvement in S/N ratio per current by using a low-concentration n-well within a suitable range. The Hall element includes a p-type semiconductor substrate layer 21 of p-type silicon, and an n-type impurity region 22 located in a surface of the p-type semiconductor substrate layer 21, the n-type impurity region 22 functioning as a magnetic sensing part 26. A p-type impurity region 23 is located in a surface of the n-type impurity region 22, and n-type regions 24 are located laterally of the p-type impurity region 23. A p-type substrate region 21a having a resistivity equal to that of the p-type semiconductor substrate layer 21 is located to extend around the n-type impurity region 22. An impurity concentration N in the n-type impurity region 22 functioning as the magnetic sensing part 26 is preferably from 1×10¹⁶ to 3×10¹⁶ (atoms/cm³), and a distribution depth D of the impurity concentration is preferably from 3.0 μm to 5.0 μm.

A technique for reducing noise in pixel images includes shrinking initial image data, and processing the shrunken image with known segmentation-based filtering techniques which identify and differentially process structures within the image. After processing, the shrunken image is enlarged to the dimensions of the initial data, subsequently processed if necessary and the final image is displayed or analyzed. The resulting technique is versatile and provides greatly improved computational efficiency while maintaining image quality and robustness.

A safety input device includes an input controller to control transmission of an input signal to an arithmetic device synchronously with a control cycle set by the arithmetic device, an output controller to instruct output of preset first self-diagnosis pattern data, a test pattern generating unit to encode the first self-diagnosis pattern data into a pulse train signal having a pulse width equal to or below a predetermined value and output the pulse train signal in accordance with a baseband transmission system, a combination input unit to combine the pulse train signal with the input signal, an input interface unit, a pattern reconfiguration unit to decode an output signal from the combination input unit into second self-diagnosis pattern data, and a comparator to compare the first and second self-diagnosis pattern data to judge the presence or absence of a difference between the first and second self-diagnosis pattern data.

A method for determining the precision of gears includes steps of providing a gear pair; performing a single flank test for the gear pair, to generate a testing signal graph; decomposing the testing signal graph into a plurality of intrinsic-mode-function graphs; selecting a first function graph and a second function graph from the intrinsic-mode-function graphs; measuring the amplitude of vibration of the first function graph, to get a profile error of gear; combining the first and second function graphs to form a graph of function combination; calculating an adjacent pitch error and an accumulated pitch error by means of the graph of function combination; and defining the gear precision for one of the gear pair according to the profile error of gear, the adjacent pitch error and the accumulated pitch error.

A technique for reducing noise in pixel images includes shrinking a first image and a second, related, image, and processing the first shrunken image with a novel segmentation-based filtering technique which utilizes image data from the second shrunken image to help identify structures within the image. After the structures are identified, the first shrunken image is differentially processed to reduce image noise. After processing, the first shrunken image is enlarged to the dimensions of the initial data, subsequently processed if necessary and the final image is displayed or analyzed. The resulting technique is versatile and provides greatly improved computational efficiency while maintaining image quality and robustness.

The invention provides an AUV underwater terrain matching adaptation area division method based on fuzzy entropy. The method comprises the following steps: 1, dividing a priori map into a plurality of grids; 2, solving terrain entropy, terrain difference entropy and terrain standard deviation of a sub-map in each grid; 3, determining a weight relation between the terrain entropy and terrain difference entropy common to a global map and a subordinating degree function and a fuzzy rule between the terrain standard deviation and terrain entropy weight; 4, solving the adaptive ability of the sub-map in the grid according to the weight relation among the terrain standard deviation, the terrain entropy and terrain difference entropy and the subordinating degree function and the fuzzy rule of the terrain entropy weight in the sub-map of each grid; and 5, dividing the adaptive areas according to the sub-map adaptive ability obtained in the previous step. According to the method disclosed by the invention, the influences of the terrain entropy and terrain difference entropy under different terrains on the terrain adaptive ability are comprehensively considered, and the adaptive ability degree in a certain area can be well reflected.

Provided is a pulse detection apparatus and a pulse detection method less susceptible to movement of a subject and less susceptible to noise. An oscillation frequency controller is configured to cause a frequency variable oscillator to oscillate at a predetermined oscillation frequency, which is a frequency within a range assumed as a resonance frequency of a molecule of a predetermined constituent constituting the blood flowing through a human body. The oscillation frequency controller also controls an oscillation frequency based on a phase difference signal and an amplitude signal, wherein the phase difference signal indicates the phase difference between a transmission signal transmitted from an antenna to the human body and a reception signal received by the antenna, and the amplitude signal indicates the magnitude of the amplitude of the received signal. A pulse detector detects the change of the amplitude signal in an amplitude direction as a pulse signal.

An aircraft cabin pressure control system and the method implement a technique that oversamples and filters a sensed cabin pressure signal, and then differentiates the oversampled and filtered pressure signal to generate cabin pressure rate-of-change. The oversampling and filtering technique removes circuit and sensor induced noise from the cabin pressure signal, and results in cabin pressure rate-of-change values with less noise than currently known systems and methods.

An opto-electric hybrid board includes opto-electric module portions respectively defined on opposite end portions of an elongated insulation layer, and an interconnection portion defined on a portion of the insulation layer between the opto-electric module portions and including an optical waveguide. A metal reinforcement layer extends over the opto-electric module portions into the interconnection portion. A portion of the metal reinforcement layer present in the interconnection portion has a smaller width than portions of the metal reinforcement layer present in the opto-electric module portions, and has a discontinuity extending widthwise across the metal reinforcement layer. This arrangement makes it possible to protect the optical waveguide from the bending and the twisting of the interconnection portion, while ensuring the flexibility of the interconnection portion including the optical waveguide.

A method of representing at least one image comprises deriving at least one descriptor based on colour information and colour interrelation information for at least one region of the image, the descriptor having at least one descriptor element, derived using values of pixels in said region, wherein at least one descriptor element for a region is derived using a non-wavelet transform. The representations may be used for image comparisons.