55results about How to "Reduce scan frequency" patented technology

The invention relates to a low-power consumption touch display module, a touch electronic device with the same and a software system thereof. An MCU (microprogrammed control unit) is arranged in a touch display module and used for running a sub-system; a CPU (central processing unit) of a host is used for running a main system; in a standby state, the host gives the display control right to the MCU, the CPU of the host mainly keeps the detection on the functions of the network and communication part, the MCU enters a standby state, and the standby information and the application selection are both realized by the MCU directly driving a display screen; and once a specific application (such as making a call, browsing a webpage and the like) is selected, the display drive control right is handed over to the CPU, and the CPU of the host stays in a sleep state in the standby state, thus more energy is saved, the standby information can be displayed, and simple touch operation can be performed.

The invention provides a display panel and a drive method of the display panel. The display panel comprises a thin film transistor (TFT) array substrate, the TFT array substrate comprises a plurality of scanning lines and a plurality of data lines, and the plurality of scanning lines and the plurality of data lines cross and limit a plurality of pixel units; each pixel unit comprises a TFT switch, a pixel electrode and a storage capacitor, grids of the TFT switches are connected with the scanning lines, source electrodes of the TFT switches are connected to the data lines, and drain electrodes of the TFT switches are connected to the pixel electrodes; a refresh rate of a scanning signal is less than 50 hertz, each frame scanning signal is divided into a signal updating stage and a picture maintaining stage, capacitance of the storage capacitor meets a preset value, picture display is guaranteed to maintain in the picture maintaining stage after the signal update stage of a current frame scanning signal is completed and before the signal update stage of a next frame scanning signal comes, wherein a data signal is input into the display panel in the signal updating stage, and no data signal is input into the display panel in the picture maintaining stage. The technical scheme is capable of reducing power consumption.

The invention discloses a wireless network setting method of a mobile terminal. The method comprises the steps of acquiring the information of a site where the mobile terminal is located currently, and determining the wireless network using strategy of the mobile terminal according to the information of the site and reducing the scanning frequency of the wireless local area network of the mobile terminal. According to the wireless network setting method of the mobile terminal, the mobile terminal can select Internet connection methods intelligently, power dissipation is reduced, and the electric quantity of the mobile terminal is saved.

A display method used for a display which has a backlight module suitable to provide more than M types of primary color lights, where M=3. The display panel of the display has an array of pixel regions. The display method provides these pixels regions to display multiple image data to be display in multiple frame times. Each of the image data includes (L1N, L2N, . . . , LMN) each representing the brightness of the M primary color light in each pixel region, where N is a positive integer. The backlight module sequentially provides M-1 primary color lights within any two successive frame times, so allow the image data to drive the pixel regions. The first and the Mth primary color lights provide the frame times for these two successive frame times.

The invention discloses a screen parameter adjustment method and apparatus, a terminal and a computer readable storage medium. The method comprises the following steps: when a screen turning on instruction is received, obtaining a first ambient brightness value; judging whether the first ambient brightness value exceeds a preset ambient brightness value; if the first ambient brightness value exceeds the preset ambient brightness value, reducing the screen scanning frequency. By adoption of the screen parameter adjustment method disclosed by the embodiment of the invention, when the screen turning on instruction is received, the first ambient brightness value is obtained, whether the first ambient brightness value exceeds the preset ambient brightness value is judged, and if the first ambient brightness value exceeds the preset ambient brightness value, the screen scanning frequency is reduced to reduce the power consumption of the screen.

The invention discloses a gate driving device, a driving method and a display panel. The gate driving device comprises a plurality of shift registers, a first driving switch and first thin film transistors, wherein the output ends of scanning signals of first shift registers are connected with the drain electrode of at least one first thin film transistor, the input ends of scanning signals of second shift registers are connected with the source electrodes of the first thin film transistors, and the grid electrodes of the first thin film transistors are connected with the first driving switch; when the first driving switch is started to work, the second shift registers receive the scanning signals sent by the first shift registers, when the second shift registers receive the scanning signals, at least one third shift register synchronously receives the scanning signals sent by the first shift registers, so that first-level shift registers synchronously drive at least two-level shift registers to ensure the need of image display and further lower the power consumption of the device for images with lower resolutions.

A displaying method and device. The display device includes a back light module and a display panel. The back light module emits at least M color lights. The display panel includes a plurality of pixel areas arranged in array structure, wherein each pixel area comprises N color filters, and at least one of the color filters is for passing through a plurality of primary color lights. In the displaying method, the back light module provides at least M color lights in a frame time, and a frame is displayed by arranging the M color lights and the N color filters in each pixel area, wherein M≧2 and N≧2. Moreover, the display panel may include an active component array substrate, a liquid crystal layer and a color filter substrate. In addition, any two adjacent pixel areas can share at least one color filter.

The embodiment of the invention discloses a digital driving pixel circuit, a driving method thereof and a display device. The digital driving pixel circuit comprises a data writing control module, a driving module, a light emitting module and n latch modules, the control end of the data writing control module is electrically connected with the scanning signal input end of the digital driving pixelcircuit; wherein the first input end is electrically connected with the refreshing control signal input end of the digital driving pixel circuit, the second input end is electrically connected with the data voltage signal input end of the digital driving pixel circuit, and the output end of the data writing module is electrically connected with the control end of the driving module; the data write-in control module is used for sequentially writing the mth data voltage into the mth latch module when the control end of the data write-in control module receives the scanning signal and the firstinput end receives the refreshing signal, and m is greater than or equal to 1 and less than or equal to n; the working frequency of the data driving circuit in the display device can be reduced, the power consumption of the data driving circuit is reduced, and finally the power consumption of the whole display device is reduced.

The invention provides a touch screen protection method and a mobile terminal. The method comprises the steps that the current placing state of the mobile terminal is detected; when the mobile terminal is placed in the state that a touch screen is arranged on a conducting object in a downward facing mode, power supplying to the touch screen is stopped, or the scanning frequency on the touch screen is modulated to a second frequency value from a first frequency value, wherein the first frequency value is larger than the second frequency value. According to the touch screen protection method, the condition that the touch screen is damaged by static electricity to be failed can be effectively avoided.

The invention provides a touch screen control method and a mobile terminal. The method comprises the following steps: when a touch panel receives a touch operation while the mobile terminal in a screen-on state, detecting a touch area corresponding to the touch operation; and when the touch area is larger than or equal to a preset area, lowering the touch control scanning frequency of the touch panel from first frequency to second frequency. According to the touch screen control method, the problem of influence of screen touch sounding on the user experience can be solved in a way of loweringthe touch control scanning frequency. Moreover, the way of eliminating screen touch sounding by lowering the touch control scanning frequency has the advantages of easiness in implementation, low costand remarkable effect. Through adoption of the touch screen control method, the user experience can be improved; the power consumption of the mobile terminal can be lowered at the same time; and thecruising ability of the mobile terminal is enhanced.

A digital display unit receiving a display signal with image encoded at high origin frequencies (e.g., dot clock). A display signal interface samples the display signal during source display time to generate pixel data elements representative of the images encoded in the display signal. The signal is sampled at a sampling frequency equal to origin frequency. The pixel data elements are stored in a buffer at the sampling frequency and retrieved at a slower frequency. Display signals are generated for each horizontal scan line of a digital display screen during a destination display time at this slower frequency. The destination display time is designed to be longer than the source display time, which enables the display signals to be generated from all pixel data elements. The destination display time is longer than the source display time because digital display units do not require the long non-display times present in the display signals.

A bi-directional scan type color display device is disclosed, comprising: a light source part emitting color lights according to a light source control signal; an optical modulator element modulating the color lights according to an optical modulator control signal, thereby generating diffracted lights; a scanner bi-directionally scanning and then projecting the diffracted lights emitted from the optical modulator element according to a scanner control signal; and an image control circuit controlling the light source part, the optical modulator element and the scanner by transferring the light source control signal, the optical modulator control signal and the scanner control signal thereto in correspondence with image information which will be displayed on the screen.

The embodiment of the invention discloses a control method and device for a touch screen, a storage medium and a terminal. The method comprises the following steps: obtaining unlocking frequency of a user when the touch screen of the terminal is in the screen-locking state; determining whether the unlocking frequency is larger than the first pre-set frequency threshold valve or not; and reducing scanning frequency in a target display region when the unlocking frequency is larger than the first pre-set frequency threshold valve. The embodiment adopts the above technical scheme so that the scheme for controlling the touch screen when the unlocking of the touch screen of the terminal is optimized, thereby reducing power consumption of the touch screen.

An electric machine, as well as a method for operating such a machine, particularly for motorically moving movable parts in a motor vehicle, having a stator and a rotor, slots being developed on the rotor, in which individual conductor loops of electric coils are situated, which are contacted to commutator segments of a commutator and to an evaluating unit, which ascertains rotational speed data from the ripple of a motor current signal. The number of individual conductor loops of the coils is selected in such a way that the sequence of the number of the conductor loops in the order of their commutation approximately represents a sine function.

The invention discloses an Internet host scanning method and an Internet host scanning system based on the host relationship. The method comprises the steps: obtaining the network information of all target hosts, enabling the network information to comprise network topology information and historical ports, and constructing feature vectors in one-to-one correspondence with all target hosts according to the network information; clustering all the feature vectors by using an unsupervised clustering algorithm, and obtaining clustering relationships in one-to-one correspondence with all the targethosts through clustering, the clustering relationships including network topology relationship information and application cluster information; and determining a scanning sequence and a scanning interval of all the target hosts by utilizing the grouping relationship, and executing network scanning to obtain port information and / or vulnerability information corresponding to all the target hosts. Compared with a traditional scanning mode, the scanning mode provided by the internet scanning method and system is more targeted. The homologous scanning interval of the network cluster obtained through clustering within the same scanning time is larger. Therefore, the influence degree of internet scanning on host work is reduced.

The invention relates to the technical field of aircrafts and discloses an unmanned aerial vehicle which comprises a machine body in communication connection with a ground station; the machine body comprises a machine main body and two wings symmetrically arranged on the two sides of the machine main body; the machine main body is internally provided with a central control unit; the machine body is in communication connection with the ground station through the central control unit; the bottom of the machine main body is provided with a first camera used for photographing a flight environmentand a second camera used for photographing the ground condition; a radar cover is detachably connected to the bottom of the machine main body and is internally provided with a laser radar; the bottomof the radar cover is provided with a laser scanning hole, through which a laser beam emitted by the laser radar passes; the first camera, the second camera and the laser radar are all electrically connected with the central control unit; and the aspect ratio of each wing is larger than or equal to 12. By adopting unmanned aerial vehicle provided by the invention, the efficiency of laser radar inspection can be improved, the quality of data acquired by the radar is improved, and the probability of collision of the unmanned aerial vehicle and the laser radar is reduced, so that the safety of the machine body is improved, and the inspection cost is lowered.

The invention relates to a touch screen scanning method, a computer device and a storage medium. The method includes the steps: A scanning a touch screen according to a preset scanning frequency to detect whether touch points are arranged on the touch screen or not; B reducing the scanning frequency if the touch points are not detected; C scanning the touch screen according to the reduced scanningfrequency; D repeating the step B and the step C until the scanning frequency is reduced to smallest scanning frequency of normal working of the touch screen, and scanning the touch screen by the smallest scanning frequency. By the method, the power consumption of the touch screen can be reduced, and the use time of the touch screen is prolonged.

The invention provides a flat panel CT (computed tomography) machine. The flat panel CT machine comprises a ray emitter and a flat panel detector, wherein the ray emitter adopts 360-degree or 180-degree scanning; the length of the flat panel detector in the axial direction perpendicular to circular motion of the flat panel detector is larger than 17 inches. The flat panel detector has larger length and width than a flat panel detector for DSA, can cover single part of the human body and requires no helical scanning. A bed does not move during scanning, the scanning time is substantially reduced, and motion artifact can be effectively reduced; the irradiation dosage of patients can be substantially reduced; the spatial resolution and longitudinal scanning layer number are substantially increased, gapless scanning is realized, and missing examination can be ensured. An X-ray emission pulse control technology is adopted, trailing and afterglow are avoided, so that data obtained by the CT machine are more real, and images are clearer. By use of the pulse control technology or semi-circle scanning manner, the scanning frequency is halved, and the flat panel CT machine has the possibility of actual application by redesigning the element number of the detector.

The invention provides a rapid low-dose oral cavity CBCT (cone beam computed tomography) imaging method and system, and the method comprises the following steps: collecting a normal position projection image and a lateral position projection image of a head; determining an imaging target area according to the orthotopic projection image and the lateral projection image; determining a scanning track and a scanning frequency according to an imaging requirement of the imaging target area; acquiring image data of the imaging target area according to the scanning track and the scanning frequency; and obtaining a three-dimensional image of the imaging target area according to the image data. According to the invention, the scanning movement distance can be shortened and the scanning frequency can be reduced while the image resolution is ensured, so that the scanning time and the radiation dose can be reduced, and the probability of motion artifacts can be effectively reduced.

The present invention provides a CT flat panel detector. Each array element is provided with an independent post-stage operational amplifier and an analog-to-digital converter, and each array element scans at the same time by taking a row as a unit to obtain a projection matrix of a tangent plane where each row is located. The invention further provides the CT machine. By enlarging the size of the flat panel detector, the CT machine can obtain the requirement of each section image of one part by scanning a circle or a half circle, and spiral scanning is not needed any more; the internal circuit of the acquisition unit is improved, so that the circuit structure meets the requirements of CT scanning, and better image quality under respective conditions is obtained; the substrate adopts a double-sided technology, so that the signal-to-noise ratio is improved; the scanning frequency is reduced by reducing the number of array elements in each row; and through a ray pulse control technology of a CT machine, or through removing a TFT for reading in an array element and transferring the function to a peripheral circuit, the requirement of the CT machine on the mobility of a thin film transistor of the detector is reduced, so that the CT flat panel detector can be practically applied.

The invention provides a flat-panel CT machine, which comprises a ray emitter and a flat-panel detector and adopts 360-degree scanning or 180-degree scanning. The length and width of a flat-panel detector are larger than those of a DSA flat-panel detector, the flat-panel detector can cover a single part of a human body, and spiral scanning is not needed any more. The scanning time is greatly shortened, and motion artifacts can be effectively reduced; the irradiation dose of a patient is greatly reduced; the spatial resolution and the number of longitudinal scanning layers are greatly improved,and gapless scanning is achieved. An X-ray emission pulse control technology is adopted, so that data obtained by the CT machine is complete and free of loss, and images are clearer. The scanning frequency is reduced by half through a pulse control technology or a 180-degree scanning mode; the requirement on the mobility of a thin film transistor of the detector can be reduced by about 10 times by a pulse control technology; the frequency is further reduced by redesigning the array element number of the detector, and the inversion frequency of a ray emitter is controlled within an achievablerange, so that the CT machine has the possibility of practical application.

A shift register unit and its driving method, a gate drive circuit, and an array substrate, wherein the shift register unit includes: an input subcircuit connected between a signal input terminal and a pull-up node, configured to input to the pull-up node Signal; the output subcircuit is connected between the pull-up node and the signal output terminal, and is configured to output a pulse signal to the signal output terminal under the control of the pull-up node; the reset subcircuit is connected between the reset terminal, the pull-up node and the signal output terminal. Between the signal output terminals, it is configured to reset the pull-up node and the signal output terminal under the control of the reset terminal; and a clock signal selection subcircuit, the input terminal of which is connected to the first clock signal terminal and the second clock signal terminal, The first output terminal is connected to the output sub-circuit and is configured to select whether to provide the first clock signal or the second clock signal to the output sub-circuit according to the levels of the first control terminal and the second control terminal. In this way, the display panel can be freely switched between two different display modes of 2D and 3D, and simultaneous scanning of double gate lines can be realized in 3D display.

The invention relates to a keyboard scanning method, device, computer equipment and storage medium, comprising: obtaining the frequency of use of key codes in the keyboard, and dividing all key codes into multiple key code partitions according to the frequency of use of the key codes; Different scanning frequencies are set for the key code partitions, wherein the corresponding scanning frequency of the key code partition where the key code with the lower frequency of use is lower; the key codes contained in different key code partitions are scanned according to the scanning frequency. The above technical solution divides the key codes into a plurality of different key code partitions according to the frequency of use of the key codes on the keyboard, and sets a corresponding scanning frequency for each key code partition, so that the key codes in the key code partitions can be scanned according to the key code partitions. The corresponding scanning frequency is set according to the frequency of use, which reduces the number of keyboard scans, thereby reducing the radiation of the keyboard.

The invention provides an anti-interference method and device for a touch key, electronic equipment and a storage medium, and the method comprises the steps: obtaining a first baseline value of the touch key through scanning; and judging whether the first baseline value of the touch key has interference or not, if the first baseline value of the touch key has interference, reducing the scanning frequency of the touch key, and generating a second baseline value of the touch key. And acquiring a current key value of the touch key, and judging whether the touch key is pressed down or not according to the current key value of the touch key and the second baseline value of the touch key. Therefore, anti-interference processing is carried out on the baseline value of the touch key by reducing the scanning frequency of the touch key, whether the touch key is pressed down or not is judged, and anti-interference of the touch key is effectively achieved. The technical problems that in the priorart, interference resistance is achieved by adding a waterproof structure, and the cost is too high are solved.