213 results about "Persistence of vision" patented technology

An optical head-mounted display includes an eyeglass frame, a holographic optical element supported by the eyeglass frame to be confronted by an eye of a wearer, and a projector mounted on the eyeglass frame to project image information on the holographic optical element. The projector includes a LED light source, a beam-splitting polarizer, a spatial light modulator, a lens set and a mechanical one-dimensional scanner. The mechanical one-dimensional scanner reflects the transformed light beam from the lens set onto the holographic optical element in one dimension at a time. When the reflective sheet is rotated at a range of angle in a brief moment of time, the holographic optical element receives from the rotating reflective sheet an array of one-dimensional modulated light beams and reflects the latter to form a two-dimensional image in the eye because of persistence of vision.

The invention provides a terminal (100) and a method for detecting ambient brightness. The terminal (100) comprises a processor (110), an ambient light sensor (130) and a screen (120). The ambient light sensor (130) and the screen (120) are connected with the processor (110). A light sensing element (1301) of the ambient light sensor (130) faces the screen (120) and is arranged at the lower surface of the screen (120). After the screen (120) is lightened, in the retentivity time of human eyes, the processor (110) adjusts the first brightness of the screen (120) to below a first threshold (601); and in the retentivity time of the human eyes, the ambient light sensor (130) detects the brightness (602) of first ambient light in which the terminal (100) exists. The terminal (100) can eliminate non-ambient light which enters the ambient light sensor (130) so that the ambient light sensor (130) can detect the relatively true brightness of the ambient light.

A simplified performance wand display system with an illuminated wand display and having other modalities such as audio and tactile is disclosed. The display utilizes the persistence of vision approach and presents a series of dynamic images and text on each cycle. Programming images and sounds may be controlled by external sources including projectors and Internet displays. Each wand may be assigned an identity at performance time based on its current location. A strategy and physical game model is presented. Applications include promotions, toys, games, gifts and related novelties.

A gaming machine for conducting a wagering game includes a controller for selecting a game outcome from a plurality of game outcomes and a persistence-of-vision display for displaying the game outcome. The wagering game may, for example, be slots, poker, keno, bingo, blackjack, or roulette, and may be a basic game or a bonus game. The POV display may, for example, be a 360 degree display or a display employing a rapidly moving structure such as a wand, a hoop, a fan, or a disc. A 360 degree display is shaped generally like a cylinder and displays the game outcome with 2D imagery that is generated by selectively illuminating LEDs spinning in a circular direction about a surface of the cylinder. A display employing a rapidly moving structure has disposed about the periphery of the structure a plurality of LEDs that are selectively illuminated as the structure is moved in a direction that is cyclical, orbital, horizontal, vertical, arced, circular, or rotational.

A pixel-based display utilizes persistence-of-vision to sweep text and graphics in a cylindrical plane, including time and date, custom messages and animations. The display is generated from a light array with a column of modulated light emitting elements, which is mounted on a rotating display assembly. Power and data are combined on a fixed control assembly and inductively coupled to the display assembly. A control assembly processor interprets a display application language that describes display-specific tasks to generate command, mode, character and graphic data for the display assembly. The control assembly processor also reads a trigger position sensor and adds a trigger delay to generate a virtual trigger command, which provides for flexible display positioning and scrolling display effects.

The present invention discloses a pixel circuit, a driving method thereof, a display panel and a display device. According to the present invention, before a light-emitting device emits light, an initialization module provides the signals at a reference signal end to the grid and the second pole of a driving transistor separately, provides a signal at a first voltage end to the first pole of the driving transistor, and is utilized to reset the grid and the first pole of the driving transistor separately, so that the difference caused by the parasitic capacitances of the grid and the first pole is avoided, and further the problem that due to the voltage jump, the threshold values are captured inconsistently, is avoided, and accordingly, the consistent brightness of a first frame after the high and low gray-scale switching can be guaranteed. Moreover, the second pole of the driving transistor is reset at the initialization stage of each frame, so that a large current flows through the driving transistor, and the threshold-voltage excursion of the driving transistor caused by the bias stress is forced to recover, and accordingly, a persistence of vision phenomenon is avoided.

A simplified performance wand display system with an illuminated wand display and having other modalities such as audio and tactile is disclosed. The display utilizes the persistence of vision approach and presents a series of dynamic images and text on each cycle. Programming images and sounds may be controlled by external sources including projectors and Internet displays. Each wand may be assigned an identity at performance time based on its current location. A strategy and physical game model is presented. Applications include promotions, toys, games, gifts and related novelties.

When any observer receives an image of a scene having the same relative size, shape and location on the retina of each of his two eyes at any instant and the image of the scene has some component of horizontal motion in any direction, the image viewed is three dimensional. If the motion occurs, all scene-object points are spatially located in playback since all of the original ray angles between camera and scene points are reproduced for both eyes by the ray cross-overs at the scene image points. When successive frames are presented, the brain cognizes the motion in linking the frames by persistence of vision. For the brain to perceive an item as moving it must connect these frames, but because of intersecting rays coming from any spatial location in successive frames, the brain cannot connect the frames without also locating the points in space.

Completely automated tests that exploit capabilities of human vision to tell humans apart from automated entities are disclosed herein. Persistence of vision and simultaneous contrasts are some of the properties of human vision that can be used in these tests. A video of an image is generated in colors that are distinguishable to the human eye but are not easily distinguished numerically. The image includes text manipulated such that positive image data and negative whitespace data occur at equal rates along with a noise component included in each of the video frames. Thus, raw data is made ambiguous while qualities of human visual interpretation are relied upon for extracting relevant meaning from the video.

The invention discloses a real three-dimensional display system and method based on space layer-by-layer scanning, belonging to a virtual reality three-dimensional display technology. The system comprises a master control host, an optical projecting unit, a control unit of the optical projecting unit, a double helix scanning screen and a motion servo unit. The display method comprises the following steps of: three-dimensional rasterization, sliced image rendering and optical projecting display, wherein the step of three-dimensional rasterization is characterized in that an object is dispersedinto a voxel set by adopting regular sampling grids; the step of sliced image rendering is used for determining a subordination relation between the voxels and a scanning screen of a moment; and at the stage of optical projecting display, a three-dimensional space is scanned out by a rotary screen layer by layer, two-dimensional sliced images which are dispersed by a three-dimensional scene are sequentially projected onto the rotary screen by adopting high-speed digital projecting equipment, and on the basis of a visual persistence effect, the sliced images transformed at a high speed are fused by human eyes and sensed into a continuous and complete three-dimensional image.

The invention discloses a nakedness-eye holographic display device based on a persistence-of-vision effect. The nakedness-eye holographic display device comprises a plurality of LED (Light Emitting Diode) lamp strips and a rotating disk, wherein the inner ends of the LED lamp strips are fixedly connected with the rotating disk; the LED lamp strips are uniformly distributed along a rotating center of the rotating disk and comprise lamp poles and RGB (Red, Green and Blue) lamp beads; the RGB lamp beads are linearly fixed on the lamp poles. A display method of the nakedness-eye holographic display device comprises the following steps in sequence: determining a display area and resolution; calculating a rotation period; calculating refresh time; displaying picture data processing. According to the nakedness-eye holographic display device disclosed by the invention, by using the principle of point-into-line and line-into-plane, the RGB lamp beads are arranged in a line form and move according to certain trajectory to form a trajectory plane; the picture can be displayed according to pixel points (the RGB lamp beads) corresponding to a lightening trajectory plane required by the picture; due to the motion of the lamp strips, a realistic background can be transmitted through the trajectory plane of lamp strip motion, and a display picture theme is displayed in the realistic environment in a floating way.

A light display is mounted on the spokes of a rotating bicycle wheel. The display includes a plurality of individual arrays of lights forming a set. The set of arrays are attached together into a single rigid light display apparatus attached to a spoke of the wheel at the tip of each array of lights. At least one sensors on the apparatus, senses the angular velocity and angular position of the rotating wheel. A microprocessor, is mounted on one of the arrays of lights and connected to the sensor, and is further connected to a shared electrical bus which traverses every array of lights. The shared electrical bus is formed by the electrical connection of all the arrays of lights in a line or loop topology. Each array of lights has at most two connection points to the shared electrical bus. The microprocessor modulates the plurality of arrays of lights via the shared electrical bus and without a direct connection to every array of lights. The arrays of lights are modulated according to a selected one of a plurality of display patterns and the sensed angular velocity and position of the rotating wheel, to form a stabilized, upright, forward-reading image on both sides of the wheel using persistence of vision of a viewer.

The present invention provides a disc player comprising one or more light sources that project a constant or pulsing light onto the upper portion of a disc being played by the disc player. If a constant light source is used, the a pulsing viewing port for the disc receptacle of the disc player is employed. The pulse frequency, pulse length, pulse period, pulse interval, pulse color, pulse intensity or a combination thereof of the light source or the pulse frequency, pulse length, pulse period, pulse interval, or light transmissivity of the one or more viewing ports can be synchronized with the rotation of the spindle or platen in the disc player, with the optical data stored, or with the rotation of an image precursor on the disc. When the disc is viewed through a viewing port while the disc is being played, a two-dimensional or three-dimensional discrete image is formed by the persistence of vision. The disc player can also include an anti-piracy system to prevent unauthorized playing of digital / optical disc content. The anti-piracy system includes a verification system and access control data. When permission granting information is obtained from the disc, the verification system compares it to the access control data and either allows or disallows the disc player to play the disc.

The invention relates to a naked eye 3D (Three-Dimensional) display system, which aims to solve the technical problem that at present, a 3D image is observed, an auxiliary equipment or a 2D (Two-Dimensional) computer display screen are needed to display a rotating 2D image for expressing a 3D effect, so that the display has no the real 3D effect, and a 3D object can not be observed from multi angles. The system mainly comprises a display, an electromechanical control module, a display driving module and a computer, wherein the display adopts a rotatable LED (Light-emitting Diode) dot matrix screen, and rotates at a preset speed, the screen rotates to different positions to display different images, the image is actually the 'slices' of the 3D image, due to the persistence of vision, the slices of the image are quickly and continuously displayed in a 3D space to form the 3D image with the 3D effect, the LED dot matrix rotating screen is driven by the electromechanical control module to detect the position of the screen and carry out feedback, the display driving module is used for driving each pixel point on the LED dot matrix screen, and the computer is used for outputting a control and display signal. By utilizing the system, the display content is more intuitive and more real, and the system can be widely applied into lighting products, advertisement display, teaching aid, and the like.

A device applicable to computers, TV sets, and projectors for converting a graphic image into a 3D image includes an image input loop, image control loop, output parity horizontal translation image IR circuit, and IR spectacles, wherein the IR spectacles create masking effect on both eyes, a CF lens is used to receive images of horizontal translation in conjunction with personal persistence of vision, and images are combined in the viewer's brain to present a 3D image.

The invention relates to the technical field of three-dimensional image display, and particularly relates to a multi-viewpoint three-dimensional display system and a display method. The system comprises a control unit and a plurality of time division multiplexing projection units with the same type, and all the time division multiplexing projection units are arranged adjacently in a plane or a curved surface; each time division multiplexing projection unit comprises a display screen, a projection lens and a clear aperture array; the clear aperture array is composed of multiple clear apertures and arranged at a projection lens aperture or an image surface; the clear aperture arrays are arranged in a spatial stagger mode; the control unit is electrically connected with the display screen and the clear aperture arrays, at one time point, the control unit gates one clear aperture in the clear aperture arrays, and the display screen is controlled to refresh and display corresponding information. Clear aperture time sequence gating of each clear aperture array is controlled through the control unit, and presentation of multiple viewpoints is realized based on persistence of vision. According to the system and the method of the invention, through spatial-temporal combined multiplexing, presentation of a large number of dense viewpoints can be realized.

Described herein is a novelty led-projection message balloon for allowing a delightful and novel method of communicating endearing messages and / or animation. The inventive device includes a circuit board, lens assembly, housing, and power source. The circuit board consists of LEDs, a microcontroller, interfacing circuitry, spring brushes, a position detector, and a motor. The power supply provides power to the housed circuit board mounted inside a balloon. The circuit board spins with light emitting elements that are projected via a lens assembly onto the balloon inner wall. The elements are rapidly turned on-off in a sequenced manner to give the illusion of a message or animation (through the persistence of vision) being projected onto the exterior of the balloon.

The present invention relates to a camera (102) with strobe flash illumination (116) for capturing an image of an object (6), and to a document scanning system (101) and method of using such a camera (102) to capture an image of a document (6). The camera (102) comprises an image capture means, an objective lens (114) with a field of view (118) to image optical radiation (119) from an object plane (8) onto the image capture means (52), a strobe flash (116) for illuminating the object plane (8), electronic pulse circuitry to pulse the strobe flash (116) at a rate which is sufficiently quick that the illumination appears to a user of the camera (102) to be substantially steady owing to persistence of vision, and a shutter means (104) to synchronize the capture of one or more images by the image capture means, each image being captured with at least one pulse from the strobe flash. The shutter means (104) is adapted to capture images at a rate substantially below the rate at which the strobe flash (16, 116) is pulsed.

The invention provides a flat panel detector and a method for eliminating image persistence of vision of the flat panel detector. The method comprises that 1) the flat panel detector is used for exposure, a frame of original bright-field image and a frame of original dark-field image are collected, and a collection time point t1 of the original bright-field image is recorded; 2) the flat panel detector is used to continue exposure, another frame of original bright-field image and another frame of original dark-field image are collected, and a collection time point t2 of the original bright-field image is recorded; 3) according to a natural attenuation rule of the image persistence of vision as well as a time interval between t1 and t2, a weighting coefficient is obtained; and 4) the weighting coefficient obtained in the step 3) is used to compensate the original dark-field image collected in the step 1), and then implement persistence of vision correction on the original bright-field image collected in the step 2) by difference operation. The method of the invention is simple in process and simplified in algorithms, is highly practically and is high in the system integrated level.

The invention provides a true three-dimensional displayer which produces and displays a body three-dimensional graphic image or a true three-dimensional graphic image. A quick rotating projection screen is obtained by projecting continuous two-dimensional images to produce a body three-dimensional image. A principle is that the two-dimensional images are integrated and a body three-dimensional space is filled by utilizing vision persistence of a human vision system so as to form true three-dimensional vision. The true three-dimensional displayer is characterized by adopting a double-face rotating screen, a V-type double-face reflecting mirror technology, a cross rotating screen, a P-type pyramid four-face reflecting mirror technology, a displayer sealing glass casing, a light gas filling technology, a multipath beam-combining projection system, a bit layer setting technology, a blend true three-dimensional displayer technology integrating semitransparent reflection and mirror spectra vision imaging and the like.

A linear array of red LEDs 10R is provided so as to extend in a direction substantially perpendicular to a direction in which a swing-type display device is swung, and a linear array of green LEDs 10G is further provided, the red LEDs 10R and green LEDs 10G being arranged in pairs of two. A CPU activates each of the red LEDs 10R and green LEDs 10G for a predetermined period to emit light in a luminance level in accordance with image data. As a result, an image corresponding to the image data is displayed in the trajectory of the swing due to persistence of vision. Thus, an image can be displayed in various colors.

The invention relates to a drive device and a drive method for a liquid crystal display. The drive device comprises a liquid crystal display, a grid drive, a data drive and a time sequence controller, wherein the time sequence controller is connected with the grid drive, the data drive and a backlight source, and is used for generating a gray scale level data signal and an internal logic synchronous signal according to an input signal, and generating a grid scanning control signal, a data input control signal and a backlight source control signal according to the internal logic synchronous signal and the time sequence of a data transmission channel to make the backlight source closed between the end moment of a last row of grid scanning control signal of the frame and the start moment of a first row of grid scanning control signal of next frame. The invention controls the on-off of the backlight source between two frames, makes the liquid crystal display screen generate periodic black frame, effectively improves the trailing phenomenon of moving images caused by persistence of vision, improves the frame quality, and simultaneously reduces the power consumption of the backlight source as the backlight source is closed between the two frames.

The invention discloses a method and system thereof for displaying a stereoscopic image including left-eye image data and right-eye image data. The invention utilizes persistence of vision to process the stereoscopic image based on display frequency, such that different images can be displayed at different time but on the same line of a screen. Accordingly, when the stereoscopic image is being displayed, the vertical resolution can be enhanced, and discontinuity of frames can be eliminated.

Neural responses to a repeated stimulus typically diminish, an effect known as repetition suppression. When a single visual stimulus (e.g., letter of the alphabet, word, object, face) is serially flashed in different locations of a display, several stimuli appear to be present simultaneously due to an effect known as persistence of vision. Normal human observers' estimates of how many stimuli they perceived at any instant of time are significantly lower when the same stimulus is flashed repeatedly than when a different stimulus is used for each flash. This is a result of the brain's diminishing response (repetition suppression) to the repeated stimuli. The present invention generally relates to methods for assessing the normality of neural performance, particularly as relates to the integrity of cortical inhibition, visual persistence, proliferation effect, and repetition suppression. Deficits in repetition suppression serve as early and confirmatory measures of cognitive disorders such as schizophrenia.

The display system for persistence of vision includes PC, mobile control platform and display screen device. The display method includes converting the text or graph to be displayed into digital signal in the PC; transmitting the digital signal in wired or wireless mode to the display screen device and controlling the LEDs' on-off state with the monolithic computer in the display screen device; and driving the LED line to rotate or oscillate with the driving mechanism so as to form annular or planar display screen smartly by means of the vision persistence of human eyes. The present invention has the features of simple structure, unique visual angle, novel design, convenient use, etc. and has display content changeable at will.

A display apparatus is for mounting on a rotatable object. The display apparatus comprises: (a) a display array for displaying at least one display pattern; (b) a self-contained rotational speed sensor for sensing a rotational speed of the rotatable object, the self-contained rotational speed sensor being entirely mounted on the rotatable object; (c) a wireless receiver for receiving information from a signal source spaced from the rotatable object and, (d) a microprocessor for controlling the display array based on the rotational speed of the rotatable object to display the at least one display pattern using persistence of vision of a viewer.

A three-dimensional (3D) display system is provided. The 3D display system includes at least one 3D display element containing a series of element bases, and each element base includes a plurality of light-emitting elements in a predetermined arrangement. The 3D display system also includes a moving mechanism coupled to the 3D display element for causing the 3D display element to move along a predetermined direction. Further, the 3D display system includes a controller configured to control respective light-emitting conditions of the plurality of light-emitting elements contained in each element base, when each element base is moving in the predetermined direction, to create dynamic pixels based on persistence of vision so as to form a layer of 2D display. The layers of 2D display corresponding to the series of element bases overlap together to form a 3D display.