165results about How to "Reduce scan time" patented technology

A driver circuit for use in an active matrix display having switching devices at pixels. The driver circuit uses no shift registers. Random access to signal lines or scanning lines can be obtained. The display quality is improved. The production yield is improved. Also, lower electric power consumption and higher-speed operation can be accomplished. Data about gray levels assumes the form of digital values and is supplied to the driver circuit. The signal lines or scanning lines are selected by an address decoder circuit.

The present invention relates to a method for scanning a projective capacitive touch panel including: A. scanning each first-axis electrode arranged along a first-axis and each second-axis electrode arranged along a second-axis, then obtaining the first-axis electrode and the second-axis electrode whose self capacitance changes; B. detecting the mutual capacitance at each intersection between the first-axis electrode and the second-axis electrode whose self capacitance changes to determine whether the mutual capacitance changes, then the area where the mutual capacitance changes being taken as a touched area. The present invention also relates to a storage medium storing instructions of implementing above method and an apparatus that implements the above method.

The invention provides an automatic stacking/reclaiming system for a bulk cargo storage yard. The automatic stacking/reclaiming system comprises a stacker distributed in the storage yard and provided with a stacking cantilever, a reclaimer distributed in the storage yard and provided with a reclaiming cantilever, a first laser scanning device installed on the stacking cantilever and used for acquiring scanning data of the storage yard, a second laser scanning device installed on the reclaiming cantilever and used for acquiring the scanning data of the storage yard, a stacking positioning device and a reclaiming positioning device for acquiring GNSS positioning information, a stacker control device, a reclaimer control device, a remote stacking processing device and a remote reclaiming processing device. The stacker control device and the reclaimer control device acquire and output the GNSS positioning information, receive a stacking control signal and a reclaiming control signal, and control the stacker and the reclaimer to execute corresponding stacking/reclaiming actions according to the control signals. The remote stacking processing device and the remote reclaiming processing device receive a stacking instruction and a reclaiming instruction input by a peripheral user, acquire coordinate information of the corresponding storage yard according to the instructions, the scanning data and the GNSS positioning information, and generate stacking/reclaiming path information to serve as the stacking/reclaiming control signals to be output to the stacker control device and the reclaimer control device. The automatic stacking/reclaiming system is based on GNSS positioning, and is high in accuracy and low in cost, data can be shared, and automatic operation of the bulk cargo storage yard is achieved.

The invention relates to the field of an operating system, disclosing a method and a device for accelerating starting an Android system. The method saves list information of all the apk packets of the Android system a file of a device storing medium, so that the list information in the file can be directly read while restarting the system; the method of establishing the information list of the apk packets in the internal memory to replace gradually scanning and analyzing the apk packet saves the time for scanning and analyzing the apk packets, thereby quickly starting the Android system.

The invention discloses a fingerprint identification system and a fingerprint processing method and device of the fingerprint identification system, and belongs to the technical field of fingerprint identification. The method includes the process that under a registration mode, when fingers of a user pass through a designated area in a sensor scanning area in a sliding mode, a plurality of pictures are obtained by scanning the designated area; according to the same characteristic value of the pictures, the pictures are spliced to form fingerprint images; the fingerprint images or the characteristic value of the fingerprint images is stored in a registration template. Due to the adoption of the fingerprint identification system and the fingerprint processing method and device of the fingerprint identification system, the scanning time can be shortened, operation is easy, and the fingerprint registration efficiency is improved.

An image scanning method includes pre-scanning a first document to generate a first original image according to the first document; adjusting parameter settings of the first original image to generate and store a plurality of pre-view images corresponding to different sets of parameters; pre-scanning a second document to generate a second original image according to the second document; and scanning the second document to generate a plurality of scanning images according to the different sets of parameters of the pre-view images. The parameter settings of the first original image include brightness, shadow, and contrast settings.

The present invention provides a field sequence liquid crystal display device and driving method thereof. The LCD device contains a liquid crystal panel, a back light source, a scan driver and a data driver, wherein the liquid crystal panel is divided into a plurality of areas, each area contains a plurality of scan lines, each area meanwhile respectively scans and controls pixel rows in every area; in each scan period, at least one pixel row of the upper and lower areas are scaned and controlled at the same time, and in the scan period, the image data are respectively transmitted to at least one pixel row of the upper and lower areas. The present invention can provide sufficient conducting time for every row transistor gate, and cut short scanning time of the entire TFT panel, which is propitious to ensure opening rate of the panel, can realize high-contrast and high brightness of the display panel, and provides furthermore wide prospect for the development of the LCD device.

The invention discloses a Bluetooth connecting method which comprises the steps that a mobile terminal sends requesting information to a Bluetooth device through a first infrared emitter, receives response information of the Bluetooth device through a first infrared outer receiver, and sends a connecting request to the Bluetooth device through the address of the Bluetooth device. Further disclosed is the mobile terminal. In practical implementation manner, due to the fact that the mobile terminal directly conducts exchange of measurement and control (MAC) address through the infrared emitter and the infrared receiver, the mobile terminal and the Bluetooth device are enabled to directly build Bluetooth connection according to the MAC address obtained through the exchange, scanning to devices around is not required, and therefore scanning time is saved, a condition that scanning is required to be repeated when names of the devices are the same, precision and efficiency of Bluetooth device connecting is improved, and meanwhile experience of users is improved.

The invention relates to a magnetic resonance diffusion tensor imaging method which comprises the following steps: performing K space sparse sampling on an imaging object to obtain K space data of a diffusion weighted reference image; performing K space sparse sampling on the imaging object to obtain the K space data of a diffusion weighted image; performing share filling on the K space data of the diffusion weighted reference image and the diffusion weighted image by keyhole imaging; and performing image reconstruction on the K space data after share filling. The magnetic resonance diffusion tensor imaging method and system provided by the invention have the advantages of reconstructing complete data, shortening the scanning time, improving the data acquiring speed and achieving rapid imaging by adopting sparse sampling rapidly and continuously to acquire K space data and performing share filling under the action of the keyhole imaging technology.

The invention discloses a CT image iteration reconstruction method based on compressed sensing and particularly relates to a CT image reconstruction method for carrying out minimization algebra iteration (algebraic reconstruction technique, ART) of the total variation (TV) in a wavelet domain. The method mainly comprises the steps that (1) imaging parameters of a CT system and projection data collected by a scanning system are obtained; (2) the projection data are initialized, and namely, Wiener filtering noise reduction processing and wavelet sparsity conversion are carried out on the projection data; (3) algebra iteration reconstruction is carried out on the initialized projection data on the basis of minimization of the image total variation (TV), and whether the iteration result meets a convergence condition is judged, if not, the iteration reconstruction image data are used as initial values, and iteration continues to be carried out; if yes, reconstructed images are used as final output images. Compared with the traditional filtering back projection and algebra iteration CT image reconstruction technology, the method finishes reconstructing the images with the fewer projection data, the speed for reconstructing the images can be increased, the radiation dose is reduced, and the image reconstruction quality can be improved.

Techniques for reducing the scan time required for the acquisition of two or more magnetic resonance imaging images of a subject having differing contrasts. In one arrangement, a combo acquisition protocol of N sets of parameters is selected prior to imaging. In order to image a subject, a first set of parameter values is selected from the protocol, a first RF pulse and at least one gradient field are used to excite the subject, a refocusing RF pulse and at least one gradient field is applied to the subject, a phase encoding gradient field is applied to the subject, and then a measurement gradient field is applied to the subject simultaneously while an induced signal is measured. The process is repeated to obtain N measurements, which are then processed into two or more reconstructed images of differing contrast, and where some of the measurements are used during the reconstruction of two or more of the images.

An MR imaging pulse sequence provides a method for simultaneous data acquisition from more than one independently prescribed volume while providing optimized field uniformity during both the magnetization preparation and data acquisition parts of the acquisition. The method is based on the use of a multi-element array coil where individual RF coil elements are more sensitive to one of the separate volumes of interest than to the other volumes. In the example of breast imaging, one scenario would have two coil elements that are designed to be most sensitive to the signal from the left breast, and two coil elements that are designed to be most sensitive to the signal from the right breast. An optimized pulse sequence and reconstruction technique is used to simultaneously acquire two separate sagittal imaging volumes corresponding to the left and right breasts with optimized fat suppression.

The SAR exposure of a subject undergoing an MRI examination is measured by acquiring a thermal image that indicates that temperature increase caused by the SAR exposure. This measurement may be used in a prescan process to adjust the SAR load produced by a prescribed imaging pulse sequence, and it can be used during the scan to adjust the SAR load produced by the prescribed imaging pulse sequence.

The invention belongs to the technical field of touch screens, and provides a mutual capacitance touch screen and a touch sensing method thereof. Firstly, a control unit is used for identifying the types of touch objects; and secondly, the control unit is used for controlling on and off of a corresponding first switch and a corresponding second switch, the widths and the spacing of sensing passages of receiving electrodes are dynamically adjusted, the widths and the spacing of the sensing passages can be increased for large touch objects such as a finger and can be decreased for small touch objects such as a touch pen, accordingly, input of various touch objects can be accurately detected, the number of the sensing passages can be reduced when the touch objects are large, overall scanning time is shortened, system resources are saved, reporting speed is increased, system response is further more sensitive, and user experience is excellent.

An item storage and tracking unit for holding a plurality of discrete items may include a housing including a plurality of receptacles positioned therein and defining a plurality of associated inner areas. A signal emitting device is associated with at least one item and configured to emit a signal. At least one movement sensor and/or at least one weight sensor may be associated with each receptacle of the plurality of receptacles. At least one signal receiving arrangement is associated with each receptacle and configured to scan at least a portion of the inner area of the associated receptacle for the signal emitted from the signal emitting device associated with the at least one item. The scan is initiated at least partly in response to a determination by the at least one movement sensor, the at least one weight sensor, and/or an antenna associated with the associated receptacle.

A system and method for breast imaging is disclosed. The system is constructed as a modular RF coil system for an MR imaging apparatus and includes a fitted coil former constructed to have a shape and size so as to substantially conform to a breast of a patient to be imaged and a receiver coil array positioned on the fitted coil former and having a plurality of receiver coils arranged to form a coil array. At least one of a size of each of the plurality of receiver coils and a number of the plurality of receiver coils is based on a size of the fitted coil former. Based on its coil arrangement and its proximity to the breasts of the patient to be imaged, the receiver coil array of the modular RF coil system is capable of receiving MR data for parallel imaging.

A method and apparatus for reducing scan time, eddy currents and image factors in dynamic magnetic resonance (MR) imaging associated with at least a portion a k-space. The method includes scanning at least a portion of the k-space with an Echo-Planar Imaging (EPI) pulse sequence technique, acquiring a randomly under-sampled k-space; and reconstructing the under-sampled k-space utilizing a constrained reconstruction technique. A dynamic image is constructed of the at least a portion of the k-space based on EPI and the randomly undersampled k-space techniques to each segment of the EPI pulse sequence technique.

The invention provides a way for correcting the imaging sequence of an echo plane. A plurality of echo signals are collected, the phase difference of the echo signals is calculated to correct the image data. Wherein, the phase difference goes through multi-order fitting, a fitting coefficient reflecting the cross-infection volume and frequency drift is worked out to carry out phase correction for the image data. The invention collects the EPI signals of two echoes to form two images, the info on time difference for collecting the two images is used to calculate the phase diagram reflecting the unevenness in the magnetic field, and the phase diagram is used to carry out deformation correction for the image. The invention takes full consideration of the influence from the uneven field during the calculation, basically corrects the displacement of the image, improves the accuracy for deformation correction in subsequent images without using additional sequence to get phase diagram, and saves scanning time.

The invention discloses a method for tracking a solar double-peak maximum power point. The method comprises the following steps of: 1) performing global scanning periodically, if a global scanning time reaches a predetermined time, executing the step 2) to the step 4) in turn, and if the global scanning time does not reach the predetermined time, performing a local MPPT algorithm all the time; 2) defining initial scanning power and setting an initial step length; 3) measuring a current voltage and a current, and calculating current power, wherein the current power is equal to a product of the current and the current voltage; and 4) comparing the current power with last power, and judging power change by disturbing a duty ratio continuously to determine whether the scanning is finished so as to determine a maximum power point. The method has the advantages that: periodic global scanning is added into a common maximum power point tracing algorithm; a scanning time is shortened effectively according to series-parallel characteristics of a solar system so as to ensure the steady operation of the system and avoid that the system works at a secondary maximum power point in a double-peak phenomenon; and therefore, electric energy production is improved.

The invention relates to a projected capacitive touch screen, which can greatly shorten scanning time and improve signal-to-noise ratio, and has accurate touch and sensitive response. The projected capacitive touch screen comprises a conductive layer covered on a substrate, the conductive layer comprises electrode strips, and each electrode strip is connected with more than two conducting wires which are connected with an external circuit. As a preferable mode, two ends of each electrode strip are connected with a conducting wire respectively. The substrate can be made of known various materials, preferably, the substrate is a membrane. By the projected capacitive touch screen, the problem that the face resistance value is overlarge when an ITO conductive layer uses the membrane as the substrate at present is well solved, the problems that the touch of the projected capacitive touch screen of an ITO membrane structure is inaccurate and the response is not sensitive are effectively solved, the dependency on raw materials is reduced, the material selection range of the projected capacitive touch screen of the ITO membrane structure is enlarged, and the projected capacitive touch screen of the membrane structure is feasible to be produced on a large scale.

The invention provides a human body three-dimensional data collecting system and method based on the light coding technology. The human body three-dimensional data collecting system comprises a rotary disc. Supports are arranged on the periphery of the rotary disc, a whole-body scanner, a half-body scanner and a face five-sense-organ scanner are installed on the three supports respectively, data lines at the tail ends of the three scanners are connected into a computer, and a matched software tool for model collecting, fusing, repairing and strengthening is arranged in the computer. The human body three-dimensional data collecting system is simple in structure, low in cost, high in accuracy and short in scanning time, the advantages of the scanners in different types are combined, division operation is adopted, the aim is explicit, and high-accuracy human body characteristic three-dimensional models of the five sense organs of the human body face, the head outline, hair details, the whole-body surface outline and the like can be obtained; a high-accuracy human body three-dimensional model can be obtained by fusing and splicing the characteristic three-dimensional models collected through the different scanners through software, and follow-up model processing is avoided; the multiple scanners work at the same time, and the scanning time is greatly shortened.

Water-fat separated magnetic resonance (MR) images with balanced steady-state free precession (SSFP) are produced. The acquired SSFP signals are isolated into multiple echo components in which the phase arrangements between the water and fat signals are controlled by appropriately selecting the TR and TE values of the SSFP imaging sequence. From the isolated echo components, the effects of the field inhomogeneities are corrected and water and fat images are separated.

The invention belongs to the technical field of nuclear medical imaging and provides a breathing movement gating correction and attenuation correction method based on PET/CT imaging. The method comprises the following steps: obtaining phantom original data and CT image data of a detected object through PET/CT scanning; carrying out gating correction on the original data to obtain new gating data; reading in CT image data by analyzing and processing software, obtaining CT attenuation coefficient according to a CT image, converting the CT attenuation coefficient into an attenuation correction coefficient under PET energy, and solving an attenuation correction factor on each response line; importing the gating data into the analyzing and processing software and multiplying with the obtained attenuation correction factor, so as to obtain data after attenuation correction; and rebuilding the data after the gating correction and attenuation correction, so as to obtain a clear PET image. The method provided by the invention has the advantages that not only is the scanning time shortened, and also better image quality is obtained compared with an image only subjected to the gating correction.

The invention relates to a method for scanning a touch screen. The method is characterized in that a mode of combining double-end scanning with single-end scanning is adopted, a method for successively scanning regions of the touch screen one by one is adopted for single-end scanning, and whether the touch screen is scanned integrally or locally is discussed according to conditions. Accordingly, the scanning time is shortened, calculation is effectively reduced, the execution efficiency is improved to the great extent, the point reporting rate is high, and user experience is smooth.

The embodiment of the invention discloses a two-dimensional code scanning method. The two-dimensional code scanning method comprises the following steps: acquiring a two-dimensional code identifier of a current interface, wherein the interface is presented to a user through a terminal screen; receiving a trigger start instruction, and trigger-starting a preset two-dimensional code scanning tool in the current interface according to the trigger start instruction; scanning the two-dimensional identifier in the current interface according to the two-dimensional code scanning tool. By the adoption of the two-dimensional code scanning method, the two-dimensional code identifier is acquired through the current interface, the two-dimensional code scanning tool is started in the current interface and is used for carrying out scanning identification on the two-dimensional code identifier of the current interface, and the scanning steps are simple, so that the scanning time is saved.

The utility model relates to the field of the chess and particularly relates to an electronic chess with a memory function. The chess comprises a chessboard and a plurality of chessmen, wherein chess positions are arranged on the chess board, a radio frequency card tag is arranged on each of chessmen, a micro processer system is arranged on the chessboard and connected to a chessman identifying device, the chessman identifying device comprises a radio frequency card reading module and a plurality of antennae, an antenna is arranged on the lower portions of at least two chess positions respectively, at least two antennae are connected to the radio frequency card reading module respectively, the radio frequency card reading module is connected to the micro processer system, and the micro processer system is connected to a data memory system which is used for storing the data information and the position data of the radio frequency card tags. The data of the radio frequency card tags are stored in the data memory system by the micro processer system. By the aid of the chessman identification method, a chess manual is stored and generated automatically, the manual recoding is omitted, the time and the labor are saved, and a user can retrieve inner data at any time.

The invention provides a Bluetooth pairing method using a smart Hub with a Bluetooth pairing function. The Bluetooth pairing method comprises the following steps of: connecting master Bluetooth equipment and slave Bluetooth equipment into different USB (universal serial bus) interfaces of the smart Hub, wherein the master Bluetooth equipment and the slave Bluetooth equipment can be simultaneously connected or respectively connected; recognizing the master Bluetooth equipment and the slave Bluetooth equipment by the smart Hub; obtaining the MAC (media access control) address of the master Bluetooth equipment by the smart Hub, and transferring the MAC address to the slave Bluetooth equipment; taking the master Bluetooth equipment as a pairing object for pairing by the slave Bluetooth equipment. According to the invention, the Bluetooth pairing time is shortened, pairing operation processes are reduced, and therefore a pairing process is more stable.

A method for magnetic resonance imaging corrects non-stationary off-resonance image artifacts. A magnetic resonance imaging (MRI) apparatus performs an imaging acquisition using non-Cartesian trajectories and processes the imaging acquisitions to produce a final image. The processing includes reconstructing a complex-valued image and using a convolutional neural network (CNN) to correct for non-stationary off-resonance artifacts in the image. The CNN is preferably a residual network with multiple residual layers.

The invention relates to a method and an apparatus for measuring the position and the orientation of an interventional device within a magnetic resonance imaging apparatus, the magnetic resonance image apparatus providing a static magnetic field B₀ and magnetic field gradients with known magnetic flux densities and directions. The invention includes attaching a Faraday sensor to the interventional device, the Faraday sensor being connected to an optical measuring device. The method also includes using the optical measuring device for measuring the rotation of the plane of polarization of linearly polarized light in the Faraday sensor, while exposing the interventional device: (i) to the static magnetic field B₀, and (ii) to the field gradients in all three directions of space in addition to the static magnetic field B₀. The method also includes determining the position and the orientation of the interventional device by evaluating the measured rotation of the plane of polarization of the linearly polarized light.

The invention discloses a method for displaying tabular data, comprising the following steps: extracting data line array from tubular data, and converting the data line array into leveling data without nesting relationship inside; traversing header elements in the data line array to obtain the relationship between the header elements; and displaying the header and leveling data corresponding to the header according to the relationship, wherein the header is formed by the header elements. In the invention, a header structure is generated adaptively, the complexity level relationship of the data is clearly displayed in the header and the data portion is displayed smoothly, thereby greatly improving the production efficiency. The invention also discloses an apparatus applying the method.