51results about How to "Does not affect resolution" patented technology

The invention discloses a multiple exposure control method which comprises the following steps: a bright image and a dark image are acquired; exposure time of the bright image is larger than that of the dark image; reliability of pixels in the bright image and reliability of pixels in the dark image are acquired; the exposure time of the bright image or the exposure time of the dark image is adjusted according to the acquired reliability of the pixels in the bright image and the acquired reliability of the pixels in the dark image. By adoption of the technical proposal provided by the invention, the method is favorable for enlarging a dynamic range of images.

The invention discloses a liquid crystal lens and a stereo display device with the liquid crystal lens. A first dielectric layer comprises an odd number of strip-shaped dielectric blocks which are sequentially arranged in the X direction and extend in the Y direction in parallel. The widths of the strip-shaped dielectric blocks are the same and are sequentially marked as d11, d12, d13,..., d18, d1n, electric conduction coefficients of the strip-shaped dielectric blocks are distributed symmetrical to the strip-shaped dielectric block in the width of d1((n+1)/2), the electric conduction coefficient of the strip-shaped dielectric block in the width of d1((n+1)/2) is the smallest, and the electric conduction coefficient of the strip-shaped dielectric block in the width of d11 and the electric conduction coefficient of the strip-shaped dielectric block in the width of d1n are the largest and the same, in other words, the electric conduction coefficients of lens units gradually decrease from the edge of the lens to the center of the lens. An electric field which is distributed in a left and right symmetrical mode is formed in each lens unit and gradually changes from the edge of the lens to the center of the lens, and therefore the overall refractive index of the liquid crystal layer gradually changes, the effect similar to that of convex lens focusing is achieved, and the liquid crystal lens can be widely applied to naked eye 3D stereo display and can be freely switched between 2D and 3D.

The invention provides a flat panel detector, an X-ray imaging system and an automatic exposure detection method. The flat panel detector includes a first scintillator layer, an image sensor, an automatic exposure detection sensor, and a PCB. The flat panel detector, an X-ray source and a display device form the X-ray imaging system. The automatic exposure detection sensor clears charge in each pixel unit; the charge in each pixel unit is collected and a cumulative distribution function thereof is calculated, and a voltage value corresponding to a set probability of the cumulative distributionfunction serves as a reference value; if the reference value does not exceed a threshold voltage, it is determined that no X-ray is available, and it returns to clear; if the reference value exceedsthe threshold voltage, it is determined that the X-ray is available, and next clear, collection and comparison are executed; and if it is determined at least twice that the X-ray is available, an exposure request signal is sent to achieve automatic exposure detection. According to the flat panel detector, the X-ray imaging system and the automatic exposure detection method, full field detection inautomatic exposure detection is achieved, false triggering is reduced, the sensitivity is high, and image collection quality is effectively improved.

The invention discloses a code rate control method of screen coding, belonging to the technical field of telecommunications. The method comprises the following steps: 1. using a computer screen to code, and setting a code rate upper limit; 2. according to a defined frame rate, using the method of the step 1 to code screen information, controlling the code rate by partitioning and time division, displaying the coded information in the form of sheet, and sending a sheet to a receiving part by each frame at intervals; 3. successively receiving each sheet by the receiving part, and performing screen coding corresponding to step 1. With the method of code rate control of partitioning and time division, the invention can confine data amount at any time to be below the upper limit of a fixed coderate so as to improve the reliability of network transmission under the condition of bigger code rate changing range. Meanwhile, the invention does not affect the resolution ratio of a screen image coded with various screen coding methods.

The invention provides a pixel structure, a display panel and a display device and belongs to the technical field of display. The pixel structure comprises a plurality of pixel units, wherein each pixel unit comprises a first sub-pixel, a second sub-pixel and a third sub-pixel which are arrayed in sequence along a first direction; the first sub-pixels, the second sub-pixels and the third sub-pixels are rectangular; the length directions of the first sub-pixels, the second sub-pixels and the third sub-pixels are a second direction vertical to the first direction; each pixel unit further comprises a rectangular white sub-pixel; pixel groups formed by the first sub-pixels, the second sub-pixels and the third sub-pixels and the white sub-pixels are arrayed in the second direction; and the length directions of the white sub-pixels are the first direction. With the adoption of the technical scheme provided by the invention, the transmittance of the display panel can be improved, and the resolution ratio of RGB (Red, Green and Blue) sub-pixels in the arraying direction is not influenced.

The invention discloses a device for photonic band gap optical fiber backscattering distributed measurement, which comprises a light source, a 1:99 coupler, a measurement optical path circulator, a reference optical path circulator, a to-be-measured optical fiber, a Y waveguide, a signal generator, a detector, a lock-in amplifier, an electric delay line, a 1*N-path optical switch C, a 1*N-path optical switch D, an optical fiber total mirror and common single-mode optical fibers 1 to N. Low-coherence optical interference and square wave and triangular wave-joint modulation and demodulation related detection technologies are used, and high-spatial resolution and high-sensitivity photonic band gap optical fiber backscattering distributed measurement is realized. As the 1:99 coupler and the circulators are used for adjusting the splitting ratio of the reference optical path to the measurement optical path, the scattering signal intensity is improved, and the signal-to-noise ratio of the system is improved. Through combination of the electric delay line and the optical switches, on the premise of not influencing the system resolution, the sensitivity and the signal-to-noise ratio, the measurement length of the device is expanded.

The invention provides 3D (Three Dimensional) display equipment based on electric-induced refractive index conversion. The equipment comprises a two-dimensional plane display screen and a flat-plate-shaped transparent electro-optical crystal array arranged on the front end of the display screen, wherein the electro-optical crystal array is formed by square-column-shaped electro-optical crystals which are the same as display screen pixel points in quantity; a section of each electro-optical crystal, which is parallel to the display screen, is the same as each display screen pixel point in size; each electro-optical crystal is over against each display screen pixel point; the 3D display equipment further comprises a transparent electrode for applying voltage to each electro-optical crystal and a control module which is electrically connected with the electrode; and the control module is used for controlling the electrode to apply voltage which corresponds to field depth of the pixel points over against the electro-optical crystals to the electro-optical crystals. An image displayed by the 3D display equipment disclosed by the invention can be watched by naked eyes; the resolution ratio and the brightness of a displayed three-dimensional image are not changed; and the displayed three-dimensional image has the real physical field depth.

The invention discloses a method for defining static high-definition image photographing areas under dynamic image previews and relates to the technical field of image processing. The method comprisesthe following steps of S1, obtaining original dynamic images in real time and displaying the original dynamic images on a display screen, thereby obtaining display screen dynamic images; S2, calculating a size proportion between the display screen dynamic images and the original dynamic images; S3, intercepting image areas in the display screen dynamic images; and S4, on the basis of the size proportion, obtaining and displaying the image areas in the original dynamic images corresponding to the intercepted image areas. The problem that in an existing image interception mode, the interceptedimages are unclear and the original high-definition images cannot be obtained or the intercepted high-definition images are integrated images, secondary clipping needs to be carried out, and the operation is complex is solved.

The invention provides a display panel, a control method of the display panel, and a display device. According to the display panel, the control method of the display panel, and the display device, adisplay status or a non-display status is realized by adjusting the refractive index of a refractive layer, the light-emitting efficiency of the display panel is adjusted by forming a grating structure whose refractive index changes periodically in the display stage, and thus gray scale display is realized, that is, the gray scale display of the display panel does not need to be provided with a polarizer, and the transmittance and transparency of a display product can be improved through the display panel; and ambient light can penetrate through the display panel to realize transparent display, a transparent area is not needed to be divided in a display area separately, the resolution of the display device cannot be affected, and the design of the display device with high PPI is facilitated.

The embodiment of the invention provides an image data transmission method, device and system, and the method comprises the steps: obtaining original image data; when it is determined that the networkcondition is poor, reducing the color depth of the original image data to obtain to-be-transmitted image data; and transmitting the to-be-transmitted image data to a receiving end. Through the scheme, the distortion rate of the image data can be reduced while the image is normally transmitted under the condition that the network condition is poor.

This invention relates to DVB digital TV time delay play system composed of computer, picture receiving card 1 and a picture play card. The receiving card 1 includes DVB/ASI input interface, DVB/ASI receiver, an input buffer, a master unit, a state incicator, and bus interface, the picture play card constitutes DVB/ASI output interface, DVB/ASI play adaptor, output buffer, a synchronous controller, an output control unit, and bus interface. This invention can conveniently play the given digital TV programs at any delay time and add programs in the process freely.

The invention relates to a preparation method of an antiradiation paint for electronic products. The preparation method comprises the following preparation steps: a, dispersing polycarbonate, phenolic resins, barium stearate and a graphene modifying agent in deionized water, then adding an organic solvent, and stirring so as to obtain a mixture I; b, adding graphene, bisphenol A resins, a diluent solvent and hexamethylene tetramine to the mixture I, and stirring so as to obtain a mixture II; c, filtering the mixture II, taking filtrate, adding carboxymethyl cellulose, polyethylene glycol, organic bentonite and a room temperature curing agent to the filtrate, leading into CO2, and stirring so as to obtain a mixture III; and d, placing the mixture III into a water bath, and heating so as to obtain the antiradiation paint. The prepared paint disclosed by the invention is excellent in properties of adhesive force, bending strength, hardness, impact strength, water resistance and the like, and the antiradiation properties of the electronic products can be effectively strengthened.

The invention provides a display panel and a preparation method thereof. The display panel comprises a first substrate, a second substrate and fingerprint identification units, wherein the first substrate and the second substrate are arranged in a laminated mode. Each fingerprint identification unit comprises a sensor and at least one super-structure lens. The sensors are arranged in the first substrate. And the super-structure lenses are arranged in the second substrate and corresponds to the sensors.

The invention relates to a camera lens group, and the lens group comprises a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens and a seventh lens which are sequentially arranged from the object side to the image side along an optical axis, the image side surface of the second lens is a convex surface, and the second lens has focal power; the image side surface of the third lens is a convex surface, and the third lens has positive focal power; the fourth lens has negative focal power; the image side surface of the fifth lens is a convex surface; the sixth lens has focal power; and the maximum field angle FOV of the pick-up lens group and the distance TTL from the object side surface of the first lens to the imaging surface of the pick-up lens group on the optical axis meet the condition that 5*tan(FOV-90 degrees)/TTL is greater than 0.8 mm <-1>. The pick-up lens group adopting the structure can realize large-range clear imaging, has the characteristics of ultra-thinness and miniaturization, and has important application in the fields of vehicle-mounted, security monitoring and the like.

A coppr acetylsalicylate high efficient liquid chromatography using liquid phase chromatograph with ultraviolet detector and chromatographic column of octadecylsilane linkage silica gel is featured as using liquid of methanol: water: THF: glacial acetic acid=45:52.5:2.5:0.5 as liquid phase and using 276 mm as detecting wavelength.