Abstract: A display panel includes a plurality of light guides which emit received light, and a plurality of external light blocking members which are disposed between exit surfaces of the plurality of light guides, and block light from the outside. Accordingly, the bright room contrast of the PDP is enhanced.

Abstract: A method of compensating an electroluminescent display device having light-emitting elements that change with use, comprising the steps of: a) using the device to display images; b) sequentially displaying an ordered series of calibration images, wherein each of the calibration images have one or more corresponding flat fields, at least one of the corresponding flat fields of each calibration image of the ordered series has a different luminance value, and the calibration images are arranged in the ordered series so as to reduce perceived luminance discontinuities; c) measuring and recording current used by the display for each sequentially displayed calibration image; d) calculating compensation parameters based on the measured currents; e) compensating an input image using the compensation parameters; and f) displaying the compensated input image.

Abstract: An interlace-type PDP is driven by an improved driving method so as to achieve a greater operating margin, higher resolution, and higher brightness. The interlace-type PDP is driven using odd and even frames in such a manner that the cells are grouped into cell groups such that each cell group includes two or three cells which are adjacent in a direction crossing the electrode pairs, and the cells are driven in units of cell groups. The grouping of cells is performed differently for even and odd frames such that, in one type of frame, locations of two or three cells grouped into each group are shifted by one cell, in the direction crossing the electrode pairs, from the locations of cells grouped together in the other type of frame.

Abstract: Disclosed is a method for driving a plasma display panel in which a plurality of first electrodes and second electrodes are arranged parallel to each other, a plurality of third electrodes are arranged to cross the first and second electrodes, and discharge cells defined with areas in which the electrodes cross mutually are arranged in the form of a matrix. According to the driving method, a reset period is a period during which the distribution of wall charges in the plurality of discharge cells is uniformed. An addressing period is a period during which wall charges are produced in the discharge cells according to display data. A sustain discharge period is a period during which sustain discharge is induced in the discharge cells in which wall charges are produced during the addressing period.

Abstract: Disclosed is a method for driving a plasma display panel in which a plurality of first electrodes and second electrodes are arranged parallel to each other, a plurality of third electrodes are arranged to cross the first and second electrodes, and discharge cells defined with areas in which the electrodes cross mutually are arranged in the form of a matrix. According to the driving method, a reset period is a period during which the distribution of wall charges in the plurality of discharge cells is uniformed. An addressing period is a period during which wall charges are produced in the discharge cells according to display data. A sustain discharge period is a period during which sustain discharge is induced in the discharge cells in which wall charges are produced during the addressing period.

Abstract: Disclosed is a method for driving a plasma display panel in which a plurality of first electrodes and second electrodes are arranged parallel to each other, a plurality of third electrodes are arranged to cross the first and second electrodes, and discharge cells defined with areas in which the electrodes cross mutually are arranged in the form of a matrix. According to the driving method, a reset period is a period during which the distribution of wall charges in the plurality of discharge cells is uniformed. An addressing period is a period during which wall charges are produced in the discharge cells according to display data. A sustain discharge period is a period during which sustain discharge is induced in the discharge cells in which wall charges are produced during the addressing period.

Abstract: Disclosed is a method for driving a plasma display panel in which a plurality of first electrodes and second electrodes are arranged parallel to each other, a plurality of third electrodes are arranged to cross the first and second electrodes, and discharge cells defined with areas in which the electrodes cross mutually are arranged in the form of a matrix. According to the driving method, a reset period is a period during which the distribution of wall charges in the plurality of discharge cells is uniformed. An addressing period is a period during which wall charges are produced in the discharge cells according to display data. A sustain discharge period is a period during which sustain discharge is induced in the discharge cells in which wall charges are produced during the addressing period.

Abstract: An OLED display device includes a current source and an OLED equivalent module. The current source includes a first controller, two biased sources, and two PMOS transistors. The current source outputs current to the OLED equivalent module to enable the OLED equivalent module emitting light.

Abstract: A method drives an electronic circuit for driving a driven element including a transistor which includes control, first, and second terminals, and in which a conduction state representing conduction between the first and second terminals changes depending on a potential of the control terminal, a first capacitive element that includes first and second electrodes, the first electrode being electrically connected to the control terminal, and a second capacitive element that includes third and fourth electrodes, the driven element being supplied with at least one of a driving voltage having a voltage level based on the conduction state in the transistor and a driving current having a current level based on the conduction state in the transistor.

Abstract: An organic EL display device having high fineness includes a plurality of pixels arrayed in series. Each of the pixels includes a first area, a second area, and a third area arrayed in series along the array direction of the pixels. The first area, the second area, and the third area define areas adapted to emit different colored light, i.e. red, green, and blue. The first area of each of the pixels, and the third area of the pixel adjoining each of the pixels define the areas adapted to emit light of the same colors, the third area being adjacent to the first area. The second areas of the pixels adjoining each other define the areas adapted to emit light of colors different from each other.

Abstract: Physical barriers (210) are present between neighbouring pixels (200) on a circuit substrate (100) of an active-matrix electroluminescent display device, particularly with LEDs (25) of organic semiconductor materials. The invention forms these barriers (210) with metal or other electrically-conductive material (240) that serves as an interconnection between a first circuit element (21, 4, 5, 6, 140, 150, 160, T1, T2, Tm, Tg, Ch) of the circuit substrate and a second circuit element (400, 400s, 23), for example, a sensor (400s) of a sensor array supported over the pixel array. The conductive barrier material (240) is insulated (40) at the sides of the barriers adjacent to the LEDs and has an un-insulated top connection area (240t) at which the second circuit element is connected to the conductive barrier material (240).

Abstract: A method of compensating an OLED display device having light-emitting elements that change with use, comprising the steps of: a) using the device to display images; b) sequentially displaying an ordered series of calibration images, wherein each of the calibration images have one or more corresponding flat fields, at least one of the corresponding flat fields of each calibration image of the ordered series has a different luminance value, and the calibration images are arranged in the ordered series so as to reduce perceived luminance discontinuities; c) measuring and recording current used by the display for each sequentially displayed calibration image; d) calculating compensation parameters based on the measured currents; e) compensating an input image using the compensation parameters; and f) displaying the compensated input image.

Abstract: A method for the correction of average luminance or luminance uniformity variations in an active-matrix OLED display, comprising: a) providing an active-matrix OLED display; b) determining at a first time a first offset voltage and a first gain relationship between the voltage and the current passing through one or more light-emitting elements; c) receiving a signal for driving the light-emitting elements after step b), correcting the signal by employing the first offset voltage and gain relationship values to compute a linear correction for the light-emitting elements to form a corrected signal, and driving the display with the corrected signal; d) determining at a time after the first time an updated offset voltage and an updated gain relationship between the voltage and the current passing through the light-emitting elements; and e) receiving a signal for driving the one or more light-emitting elements after step d), correcting the signal by employing the updated offset voltage and gain relationship val

Abstract: An instrument cluster for a vehicle is disclosed. A display panel with markings and characters of various gauges, such as a speedometer, tachometer and hydraulic gauge, displays information on various conditions and operations of vehicle. An indicating pointer indicates the markings. An LED placed at the rear side of the display panel illuminates the display panel during nighttime operation. A gauge motor rotates the indicating pointer. A three-dimensional illumination panel is placed on the display panel and has markings or characters formed three-dimensionally by Nd-YAG laser.

Abstract: A light source driving circuit and method is provided. The light source driving circuit includes a light source for outputting light, a light receiving unit for detecting a portion of the light output from the light source, a switching unit for controlling the supply of a source voltage according to an operation control signal, a constant current source for supplying a current corresponding to a threshold current to the light source according to the control of the switching unit, and an automatic power controller for controlling a driving current of the light source in response to an external modulation signal. Accordingly, by supplying a current corresponding to a threshold current of a green laser by means of a switching operation according to an operation control signal for a set time before a modulation signal of the green laser is input, a turn-on delay of the green laser can be reduced.

Abstract: A light modulator device includes a first electrical conduit, a second electrical conduit electrically isolated from the first conduit, a first display element, and a second display element. The first display element is in an actuated state when a voltage difference between the first conduit and the second conduit has a magnitude greater than a first actuation voltage and is in a released state when the voltage difference has a magnitude less than a first release voltage. The second display element is in an actuated state when the voltage difference has a magnitude greater than a second actuation voltage and is in a released state when the voltage difference has a magnitude less than a second release voltage. Either the actuation voltages are substantially equal and the release voltages are different, or the actuation voltages are different and the release voltages are substantially equal.

Abstract: According to one embodiment, a method for displaying an image in a light processing system includes receiving an image to be displayed. The method also includes generating a light from a light source. The method further includes receiving the light at a spatial light modulator having a group of pixels. The method further includes displaying the image along an optical path. The method further includes automatically defocusing the image by adjusting at least one of a group of optical elements along the optical path, thereby reducing pixel noise in the displayed image.

Abstract: The present invention provides an image sensor array and a liquid crystal display for increasing the readout time thereof. The image sensor array and liquid crystal display both comprise a substrate, a readout line disposed on the substrate, a first switch line and a second switch line both intersecting the readout line, a first position defined by the readout line and the first switch line, a second position defined by the readout line and the second switch line, and a sensor element disposed on the first position and separated from the second position, wherein the first switch line transmitting a first switch signal and the second switch line transmitting a second switch signal overlapped the first switch signal.

Abstract: An apparatus includes a display panel having pixels, and a timing controller that uses a frame rate control look-up table to generate more gray scale levels than available from a data driver. The timing controller uses the increased number of gray scale levels to compensate distortions in luminance across the display panel due to decreases in signal strengths of scan signals transmitted on scan lines of the display panel.

Abstract: The invention provides a miniaturized liquid crystal display device used in a mobile phone or the like which prevents the possibility of short-circuiting of lines of a flexible printed circuit board which supplies a power source or the like to a liquid crystal display device due to a phenomenon that a punch-out hole formed in the flexible printed circuit board at a plating terminal is brought into contact with a frame made of metal. Pins are formed on a holder on which a liquid crystal panel is mounted, and the pins of the holder are inserted into the punch-out hole formed in the flexible printed circuit board at the plating terminal and a pin hole formed in the frame. Lines made of metal are exposed on an inner side of the punch-out hole formed in the flexible printed circuit board at a plating terminal.

Abstract: A liquid crystal display and method for controlling brightness of an image on a liquid crystal display are provided, in which, a liquid crystal display panel displays an image, a light generating unit provides a laser beam to illuminate the liquid crystal display panel, a scanning unit scans the liquid crystal display panel with the laser beam, and a controller controls a speed of the scanning unit depending on a brightness of the image. Thus, the liquid crystal display is capable of improving a contrast of an image displayed on a liquid crystal panel using a laser as a backlight.

Abstract: A display device includes a substrate with a display area having gate lines and data lines defining cells that each has a pixel electrode, a driving circuit on the substrate, at least one first signal line including lower and upper lines overlapping each other with an insulation layer interposed therebetween, the first signal line adjacent to the driving circuit, and at least one second signal line to connect the first signal line to the driving circuit.

Abstract: An active-matrix liquid crystal display device has pixels arranged in a matrix which each include a thin film transistor (TFT) as an active element. When the device is in a power-off state, TFTs in all the pixels are switched on, and all horizontal switches are turned on so that all data lines are supplied with a potential equal to the potential of common electrodes of the pixels. This forms a discharging path for discharging residual charge in all the pixels, and the discharging path can instantaneously discharge the residual charges.

Abstract: An output buffer for a gray-scale voltage source adapted to a flat panel display such as a liquid crystal display is provided. The gray-scale voltage source provides a reference voltage for converting digital data into corresponding gray-scale voltages. The output buffer comprises a differential amplifier, a power amplifier and a feedback network. The positive input terminal of the differential amplifier is coupled to the gray-scale voltage source. The negative input terminal of the differential amplifier is coupled to a second terminal of the feedback network. The output terminal of the differential amplifier is coupled to the input terminal of the power amplifier. The output terminal of the power amplifier is coupled to a first terminal of the feedback network. The output terminal of the power amplifier also outputs the voltage from the buffered gray scale voltage source to serve as the reference voltage.

Abstract: A method for driving a normal black type liquid crystal display (LCD) includes driving the LCD by applying uncompensated source signals corresponding to gray levels; recording first optimized common signal voltages (Vcom-opt1) of common signals corresponding with the gray levels; adjusting the source signal to drive the LCD so second optimized common signal voltages (Vcom-opt2) of common signals corresponding with the gray levels conform to the following conditions: (1) when the gray level is lower than a predetermined gray level, the Vcom-opt2 exceeds a predetermined voltage of the common signal and the absolute difference between the Vcom-opt2 and the predetermined voltage is less than or equal to that between the Vcom-opt1 and the predetermined voltage; and (2) when the gray level exceeds the predetermined gray level, the absolute difference between the Vcom-opt2 and the predetermined voltage is less than or equal to that between the Vcom-opt1 and the predetermined voltage.

Abstract: A novel driving circuit for an input display is provided. The driving circuit includes a first and a second data lines disposed in parallel with each other, a first and a second gate lines disposed in parallel with each other and intersected with the first and the second data lines, so as to form a pixel of the input display thereby, a common line disposed between the first and the second gate lines, a first switching element having a first gate electrode connected to the first gate line, a second switching element having a second gate electrode connected to the second gate line, and a third switching element connected between the common line and the second switching element and operating in a forward-bias state. The first and the second gate lines operate in sequence and the first and the second switching elements are respectively activated by the first and the second gate lines in sequence.

Abstract: Provided is an electro-optic device having reduced power consumption. More specifically, an electro-optic device is provided comprising: a liquid crystal layer between a pair of opposing transparent substrates; a patterned electrode set positioned between the liquid crystal layer and the inward-facing surface of the first transparent substrate; a conductive layer between the liquid crystal layer and the inward-facing surface of the second transparent substrate; and means for applying voltage to the patterned electrode set and the conductive layer, wherein the voltage applied to the conductive layer is below the threshold voltage (the RMS voltage difference above which the optical transmission of the liquid crystal layer changes).

Abstract: A pixel circuit including a first transistor, a coupling capacitor, a second transistor, and a luminescent element is provided. The first transistor is used as a switch. The coupling capacitor stores a coupling voltage and transmits the coupling voltage to the gate of the second transistor for compensating a drift of the threshold voltage of the second transistor. The second transistor provides a driving current for driving the luminescent element to emit light.

Abstract: A liquid crystal display panel comprising a first substrate, a second substrate and a liquid crystal layer is provided. The first substrate comprises a first base, a first pattern and a second pattern. The first pattern and the second pattern are disposed on the first base. The second substrate comprises a second base, a first data line, a first scan line, a second scan line, a first pixel, and a second pixel. The first pattern and the second pattern are symmetric with respect to the first data line. The first pixel comprises a first thin-film-transistor coupled to the first scan line and the first data line. The second pixel comprises a second thin-film-transistor coupled to the second scan line and the first data line. The liquid crystal layer is disposed between the first substrate and the second substrate.

Abstract: A method for driving a reflective liquid crystal display having a selective reflection layer to record an image on the reflective liquid crystal display is provided. The method includes: selectively applying two or more kinds of voltages, which includes a voltage V1H exceeding an operation threshold value of the selective reflection layer and a voltage V1L not exceeding the operation threshold value of the selective reflection layer, to the selective reflection layer for a period of time TV1, so as to select, in the selective reflection layer, an area where the operation threshold value is exceeded and other area where the operation threshold value is not exceeded; and applying a voltage V2 to the selective reflection layer, the voltage V2 having a frequency differing from that of the voltages V1H and V1L.

Abstract: An object is to provide an OCB-mode liquid crystal display device causing no flicker even with varying environment temperature, and flicker prevention is offered by dividing a transition voltage to that of a first pulse and that of a latter pulse, and varying a ratio of pulse width of a transition voltage, i.e., between the first pulse and the latter pulse, together with any detected environment temperature.

Abstract: An apparatus for driving a liquid crystal display (LCD) includes a timing controller, a source driver and a gate driver. A panel of the LCD includes gate line groups, and each of the gate line groups includes gate lines. Scan pulse signals having a same scan pulse period and output enable signals are generated by the gate driver. The scan pulse signals are respectively enabled by the output enable signals and each of the scan pulse signal has one of a data writing period and a gray level writing period during the scan pulse period. During the data writing period, only one of the gate lines is turned on at a point in time by the scan pulse signals. During the gate level writing period, one of the gate line groups is turned on by the scan pulse signals. Thus, the edge blur of displaying moving images is eliminated.

Abstract: A timing controller including a memory and a memory controller is provided. The memory includes an odd-field block and an even-field block. The memory controller is coupled to the memory and controls the memory. When two of a first, a second and a third gate output enable signals output by the timing controller are active, the memory is controlled to output the data of the (I-1)th scan line stored in the odd-field block. When one of the first, the second and the third gate output enable signals output by the timing controller is active, and the other two signals are inactive, the memory is controlled to output the data of Jth scan line stored in the even-field block and write an odd-field field data of the (J+1)th scan line to the odd-field block and write an even-field field data of the (J+1)th scan line to the even-field block.

Abstract: An output buffer (100) for a TFT-LCD display device includes a push-pull output stage having a first device (Mp) for supplying current to an output (Vout) and a second device (Mn) for drawing current from the output. A first pre-amplifier (101) is coupled to an input (Vin) of the buffer for driving the first device to supply current to the output. A second pre-amplifier (102) is coupled to the input of the buffer for driving the second device to draw current from the output. A first switchable offset is associated with the first pre-amplifier (101) and a second switchable offset is associated with the second pre-amplifier (102). A switchable current source (Ip) is configured to supply current to the output and a switchable current sink (In) is configured to draw current from the output.

Abstract: A digital-to-analog conversion unit, and a driving apparatus and a panel display apparatus using the same are provided. A driving voltage output from the digital-to-analog conversion unit can be a positive polarity voltage or a negative polarity voltage, wherein the driving voltage output from an output buffer is a positive polarity voltage and the driving voltage output from an output inverter is a negative polarity voltage. The apparatus only needs one set of grayscale voltage so that the layout area of the apparatus, and the flicker and the residual images of the display panel can be reduced.

Abstract: A liquid crystal display device and driving method is provided. The liquid crystal display device includes a first data line to which a data voltage is supplied and a second data line separated from the first data line with a pixel row therebetween and connected to the first data line in top and bottom ends. A first gate line crosses the first and second data lines. A second gate line crosses the first and second data lines. A first switch device is operable to supply the data voltage from the first data line to a pixel electrode of an odd-numbered pixel row in response to the first scan pulse. A second switch device is operable to supply the data voltage from the second data line to a pixel electrode of an even-numbered pixel row in response to the second scan pulse.

Abstract: A gate driving circuit for a liquid crystal display device includes a plurality of shift register stages each including pull-up and pull-down transistors, wherein each of the pull-up and pull-down transistors is connected to a gate driving signal output terminal and controlled by voltages on first and second nodes, respectively, and wherein the pull-down transistors of a (2n?1)th shift register stage and a (2n)th shift register stage are connected to each other; and a control signal generating unit alternately supplying one of first and second control signals to the pull-down transistors of the (2n?1)th and (2n)th shift register stages and supplying the other of the first and second control signals to the pull-down transistors of the (2n+1)th and (2n+2)th shift register stages, wherein n is an positive integer.

Abstract: An output circuit of a source driver may include a first buffer adapted to receive a first voltage and to output a first sub-voltage, a second buffer adapted to receive a second voltage and to output a second sub-voltage, the second sub-voltage being complementary with the first sub-voltage, and a sharing signal generator adapted to generate a sharing signal, the sharing signal being activated when the first sub-voltage level and the second sub-voltage level begin to change, and being inactivated when the first sub-voltage level and the second sub-voltage level reach a reference level, wherein the sharing signal controls a state of an electrical path between an output terminal of the first buffer and an output terminal of the second buffer.

Abstract: A liquid crystal display including a liquid crystal panel, a temperature sensor sensing a temperature of the liquid crystal panel, a gray scale voltage generating part including a plurality of gray scale voltage generating units each generating a first gray scale voltage set corresponding to a preset temperature and a controller generating a second gray scale voltage set corresponding to the sensed temperature using the first gray scale voltage sets when the sensed temperature does not correspond to the preset temperature.

Abstract: In a display apparatus including: a display panel; a backlight unit disposed on the rear side of the display panel; a circuit board disposed on a side of the backlight unit which is different from the display panel side; and a brightness sensor for measuring brightness of light from the backlight unit, the brightness sensor is supported on a side of the circuit board which is different from the backlight unit side.

Abstract: An apparatus including a first user interface and a second user interface and a processor connected to the first and second user interface. The processor being configured to disable at least one feature of the second user interface when a user interface deactivation input is received from the first user interface.

Abstract: A multifunctional mouse includes a poke stick at a side of its housing. The poke stick is extended to a control circuit inside the housing, and a turning wheel is located at a front middle position of the housing. By using a thumb to touch the poke stick to move forward and backward, and other fingers to touch the turning wheel to move left and right, a mouse pointer is moved, enabling a user to manipulate the mouse pointer in a way in compliance with ergonomics, thereby reducing an injury to hands. More particularly, a bottom surface of the housing is provided with a game buttons assembly which is linked with a control circuit, enabling the entire mouse not only to be provided with functions of controlling the mouse pointer and performing point-and-click tasks, but also even to serve as a controller for game software.

Abstract: The present invention provides a device configured to present the feel of a plane or an object surface to a user using equipment configured to generate physical vibration such as a vibration motor or the like. A plurality of vibration motors including an eccentric rotor are put on a human body, and torque generated at the vibration motor along with an angular velocity fluctuation is provided to a skin surface in the horizontal direction with a different timing. Alternately generating torque by the plurality of vibration motors enables the user to perceive a plane or an object surface.

Abstract: A display system for a handheld computing device is disclosed. The display system includes a processing unit having a first communication port, and a visual display unit separable from the processing unit. The visual display unit further includes a visual display, and a second communication port. The display unit can be expanded from an initial or storage state to present a larger visual display size. Further, the first communication port providing communication with the second communication port.

Abstract: Improved approaches for users of computing devices to interact with graphical user interfaces are described. According to one aspect, a rotational user action supplied by a user at a user input device is transformed into linear action with respect to a graphical user interface. According to another aspect, a portion of an extended list of items is displayed by a graphical user interface and, through rotational user actions at a user input device, the portion of the list being displayed can be varied with welcomed ease of use. Although the type of computing device can vary, the improved approaches are particularly well-suited for use with a portable media player.

Abstract: A method for detecting lift from a surface portion of an optical pointing device comprising a coherent light source, a photodetector device including an array of pixels, and means for extracting motion features including comparators with an adjustable offset value, the method comprising the steps of: (i) illuminating said surface portion with radiation by means of said coherent light source; (ii) detecting radiation patterns reflected from the illuminated surface portion by means of said photodetector device; (iii) comparing light intensity between neighbouring pixels in said detected radiation patterns; (iv) extracting motion features as a function of the result of said comparison; (v) counting the total number of motion features extracted; (vi) increasing, respectively decreasing, said comparator offset value when said total number of motion features increases, respectively decreases; wherein the method further comprises the steps of: (vii) comparing said comparator offset value with an offset threshold; (v

Abstract: There is provided a media player including a casing with a front panel mounted thereon; the front panel including at least one touch sensor; and at least one mechanical switch incorporated within the casing. It is preferable that a combination of activating at least one touch sensor, and activating the at least one mechanical switch at least once is required for the activation of at least one function from a first set of functions of the media player. The media player may be an audio media player, a video media player, a digital photo viewer or a combination of the aforementioned. Associated methods to provide instructions to the media player are also disclosed.

Abstract: A new mobile electronic device, referred to as a soap, may be used to control electronic devices, external or internal to the soap, in an intuitive, convenient, and comfortable manner. For example, a soap may serve as an alternative to input devices such as a mouse. A soap device may include a core, and a hull that at least partially encloses the core. The core includes a tracking component capable of tracking movement relative to the hull. The soap input device also includes a transmission component configured to transmit a signal from the tracking component to a computing device, where it may control the position of a pointer and the use of a selector on a monitor. The hull may be soft and flexible, the core may be freely rotatable about at least one axis. The core has a shape such that tangentially applied pressure rotates the core relative to the hull. A user may therefore control an electronic device, simply by rolling and manipulating the soap.

Abstract: An information processing apparatus includes a first display control unit configured to display information on a display screen, a detection unit configured to detect the operation direction and an operation amount of a direction inputting operation, a scroll control unit configured to scroll the information displayed on the display screen in the operation direction detected by the detection unit, and a second display control unit configured to control the display of information so that the higher the operation amount detected by the detection unit, the wider a display area becomes in the operation direction detected by the detection unit.

Abstract: The present invention relates to an input method of a pointer input system. A setting procedure and a correcting procedure having been performed on the pointer input system to obtain a space conversion relationship and an over-bright position. The input method includes steps of inputting at least a light spot into a projection screen, capturing the light spot by a photosensing system to obtain a light-spot image, recognizing at least a relevant light spot of the light-spot image by checking whether the light-spot image excluding the over-bright position complies with a light-spot characteristic situation so as to obtain at least a light-spot data, and converting the at least a light-spot data into at least an input data of a data processing system according to the space conversion relationship.