41results about How to "Uniform signal" patented technology

A clock tree synthesis (CTS) tool determines how to position a hierarchy of buffers for fanning out a clock signal to clocked devices (“sinks”) within an integrated circuit (IC). The tool first clusterizes the sinks and places a lowest level fan-out buffer near each cluster. The tool then iteratively places progressively higher level buffers by clusterizing a last-placed buffer level and then placing a next higher level buffer near the centroid of each lower level buffer cluster, until the tool has placed buffers at a mid-level for which variation in path distances between that level and a next higher buffer level exceeds a predetermined limit. The CTS tool then places a top level buffer at the centroid of the mid-level buffers, divides the layout into partitions, each containing a similar number of mid-level buffers, and then places a second-highest level buffer in each partition. The CTS iteratively places each next lower buffer level by dividing each partition into progressively smaller partitions and placing progressively lower level buffers in each smaller partition until it places buffers at a level having sufficient number of buffers to drive the mid-level buffers.

In an MRI apparatus, an RF coil is provided which can generate or detect a circularly-polarized magnetic field with one feeding port, and which can radiate highly efficient, highly homogeneous electromagnetic waves and detect a highly sensitive, highly homogeneous magnetic resonance signal. For this purpose, the coil has a cylindrical shape, one feeding port which exchanges signals, plural first capacitors disposed at circumferential positions in at least one cross-section effectively orthogonal to the direction of the static magnetic field, and at least one second capacitor. In this RF coil, in which a static magnetic field is applied in essentially an identical direction to the direction of the central axis of the cylindrical shape, a second capacitor having a smaller capacity than the capacity of the first capacitor, is disposed at a position from 22.5° to 67.5° or 202.5° to 247.5° in a clockwise direction with respect to the center of the cylindrical shape from the feeding port in a cross-section viewed from a direction passing through the static magnetic field.

A method and apparatus for writing timing-based magnetic servo band patterns on magnetic storage media. The apparatus includes a magnetic head and a tri-state driver. The driver is adapted to control three magnetic head states including two writes states having positive and negative current outputs, respectively, for performing a write sequence and a rest state, having no current output for avoiding overwriting of the magnetic pattern between write sequences. The driver is further adapted to gradually change the magnetic head state from a rest state to a write state before beginning a write sequence and to gradually change the magnetic head state back to a rest state upon completing a write sequence. Thus, strong uniform signal pulses are produced upon playback of the magnetic pattern.

The invention discloses a flexible nanometer column array with the top end coated with precious metal and a preparation method and application thereof. The preparation method comprises: pouring a polymer solution in a duct of a single-pass aluminium oxide template; enabling the polymer solution to be cured and formed in the duct of the template; placing the aluminium oxide template after a pouredpolymer is formed in chloride solution of which the activity is lower than that of aluminium to soak for 5 to 10min, and removing an aluminium layer on the back of the template; placing the template after a polymer nanocolumn is placed in a pore and the aluminium layer on the back is removed into acid solution to etch off the aluminium oxide template so as to prepare a size-controllable flexible transparent nanocolumn array thin film; placing precious metal particles on one surface of a flexible transparent nanocolumn array in a mode of electron beam evaporation or magnetron sputtering so as to prepare the flexible nanocolumn array with the top end coated with precious metal. The flexible nanocolumn array and the preparation method are simple and convenient to operate and good in effect.

A stacked memory module is manufactured in mirror image arrangement and a method for the same. The pins of a first memory unit and pins of a second memory unit are electrically connected to an upper face and a lower face of a first printed circuit board made of rigid material. The pins of the second memory unit are in mirror image arrangement with respect to the pins of the first memory unit. Two second PCBs are made of flexible material and electrically connected to both sides of the first PCB. Conductive contacts such as gold fingers are electrically connected to circuit on the second PCB. The manufacture cost is reduced and manufacture process is simplified. The signal quality is enhanced because the signal paths are uniform and the load impedance is reduced.

The present invention provides an optical recording medium and an optical disk device realizing prevention of crosswrite and uniformity of playback signals and capable of easily securing compatibility with a read only disk. It provides an optical recording medium on which light LB condensed by a lens (12, 14) having a numerical aperture of 0.85±0.1 and a wavelength of 405±5 nm is focused for recording or playback, having a substrate 1 formed with a groove 2 in its surface, an optical recording layer 3 formed on the substrate and having topography corresponding to the groove, and a light transmission type protection layer 4 formed on the optical recording layer; used when light for recording or playback is focused from the protection layer side to the optical recording layer; using as a recording area only the optical recording layer of one of a side far from the emitting side of the light for recording or playback, that is, a portion corresponding to a recessed portion of the topography, and a side close to it, that is, a portion corresponding to a projecting portion; having a track pitch of 0.32±0.01 μm; and having a depth D2 of a recessed portion with respect to a projecting portion in the range of 19 to 24 nm.

The present application discloses a scanning driving circuit and a flat display apparatus, the scanning driving circuit includes a plurality of cascaded scanning driving unit, each scanning driving unit including a forward and reverse scanning circuit for controlling the forward or reverse scanning; an input circuit to perform charging to the pull-up control signal point and the pull-down control signal point; an output circuit for generating a scanning driving signal with two-valued high electrical level and outputting to the current level scanning line to drive a pixel unit.

Disclosed are a pinned photodiode having and electrically controllable pinning layer and an image sensor including the pinned photodiode. A predetermined voltage is applied to the pinning layer for the depletion duration of the photodiode in the image sensor, so that stable surface pinning is acquired and the uniform surface pinning is achieved between pixels.

A light emitting display device including a substrate, an emission unit that forms an image and is disposed on the substrate, a plurality of terminals contacting a plurality of interconnecting lines electrically connected to the emission unit, and a contact resistance controlling portion which decreases a contact resistance between a terminal and an interconnecting line and is disposed where the terminal contacts the interconnecting line.

The present disclosure proposes a display and a display panel driving device. The display panel driving device includes a source driver chip having source driver signal output ports, a leads, each lead connected to one of the source driver signal output ports, and a multiplexer connected to the leads. The multiplexer is configured to transmit the source driver signal output by each of the leads to data lines on the display panel, and configured to adjust the strength of the source driver signal output by each of leads if the strength is not unanimous so that the source driver signals with a single strength enters the data lines. The display includes a display panel and the display panel driving device. Display uniformity of images shown on the panel is improved.

The invention discloses a monitoring and early-warning system of a source of drinking water. The monitoring and early-warning system comprises a shell arranged at a place in which the source of drinking water is located, a processor arranged in the shell, a wireless transmitter, a memorizer, and a GPS position indicator, and the monitoring and early-warning system further comprises a computer and a wireless receiver which is electrically connected with the computer; the shell is provided with an upper layer sensor group, a middle layer sensor group and a lower layer sensor group, wherein the upper layer sensor group, the middle layer sensor group and the lower layer sensor group all comprise dissolved oxygen sensors, temperature sensors, PH value sensors, ammonia nitrogen sensors, phosphate sensors and turbidity sensors. The monitoring and early-warning system has the advantages of being high in detection sensitivity and good in accuracy.

The invention provides a contrast agent for magnetic resonance cholangiopancreatography use, which is tea water, the manganese concentration of which ranges from 5mg/l to 13mg/l. In the invention, the tea water used as the contrast agent has good taste, stable structure in human body, no changes to gastrointestinal system functions, high security factor, nontoxicity, good relaxation, no fermentation in intestinal cavum and no gas generation, and the intestinal cavum is fully filled with the tea water to ensure uniform signals in the intestinal cavum. The tea water has high solubility, low cost, wide sources, easy acceptability for sufferers, low concentration for orally taking without any obvious discomfort, nausea, vomiting and constipation, and the application of the contrast agent is realized by requiring no drug test; disease diagnosis can be realized by drinking the tea water, which is more acceptable for patients compared with chemical medicines. Furthermore, the application of the contrast agent is realized by requiring no drug test, thus greatly reducing the diagnosis charges of the patients.

The invention belongs to the technical field of electromechanical auxiliary equipment, and discloses a damping and noise-removing device for electromechanical equipment, a box body with a bottom opening is fixedly mounted at the top of a base through bolts, and a sound insulation plate is arranged on the inner wall of the box body; the bottom of the base is provided with two horizontally-arranged anti-skid bottom plates, the two sides of the top of each anti-skid bottom plate are each welded with a vertically-arranged stand column, a fixing plate is arranged above the stand columns, and the top end of the fixing plate is fixedly connected with the base; a noise acquisition module and a noise amplification module are arranged in the sound insulation plate; the noise amplification module is connected with a console outside the box body; and a control module, a noise preprocessing module, a noise feature extraction module, a noise judgment module, a noise reduction module, a storage module and a wireless communication module are arranged in the console. Noise generated by equipment can be absorbed through the sound insulation plate in the box body, and the noise is prevented from affecting the working and living environment of people.

The invention discloses a touch data acquisition gain adjusting method and device and touch equipment, and the method comprises the steps: obtaining a target gain value from a gain value group; touch sampling signals in each sampling channel in the touch screen are read under the target gain value, the touch screen is divided into a plurality of sampling channels, and each sampling channel is independently controlled; counting dead pixels in each sampling channel based on the touch sampling signal; and respectively determining the optimal gain value of each sampling channel, and for the sampling channel of which the optimal gain value is to be determined, taking the gain value corresponding to the minimum value of the total number of the dead pixels as the optimal gain value of the channel in the gain value group. On one hand, each channel can independently and automatically adjust the optimal gain value; and on the other hand, the total number of the bad points of each channel is minimum, so that the number difference of the bad points among the channels is reduced, and the whole signal looks more uniform.

A solid-state imaging device includes: an imaging unit wherein a plurality of light sensing units formed in a matrix and a plurality of interconnections are formed among the plurality of light sensing units; a color filter that is disposed over the imaging unit, and delivers colors to the light sensing units in accordance with a predefined rule; and on-chip lenses that are disposed corresponding to the light sensing units on a one-by-one basis over the color filter, and have light-collection characteristics varying in accordance with differences among sensitivities of the light sensing units, where the differences among the sensitivities of the light sensing units are generated, when the same colors are delivered to the light sensing units in accordance with the same rule, owing to the fact that positions of the individual interconnections relative to the light sensing units vary periodically.