167 results about "Light pen" patented technology

An optical device consists of one or more optical waveguides and mechanical light switches 30. When a light switch 30 is turned on, it extracts light beam 62a from a waveguide core 20 and redirect the light beam 62b into free space, it redirects an incoming light beam 80 from free space and injects the light beam 80a into the waveguide core 20, or it performs both functions at the same time, depending on specific applications. On and off states of a light switch 30 are achieved by pulling the light switch 30 into a close vicinity of the waveguide core 20 and by pushing the light switch 30 away from the waveguide core 20, respectively. An interactive fiat-panel display can be built based on this invention. A plurality of parallel channel waveguides forms a display panel. An array of light beams 62a, injected from an array light source 60, propagates along waveguide cores 20 until reaches a location where a light switch 30 is turned on. At this location, the light switch 30 redirects the light beams towards a viewer. An image is produced when the light switches 30 are turned on sequentially while the light-intensity distribution on the array light source 60 is synchronically updated. The panel display is capable of responding to an input optical signal by detecting an incoming light beam 80 from a light pen 100. An array of photodetectors 81 is used to identify the location of the incoming light beam 80 on the display panel and a computer is used to execute a corresponding action accordingly.

An implantable medical device is capable of delivering therapeutic output to a patient. A controller, programmable by a medical professional, is operatively coupled to the implantable medical device to, in part, program the therapeutic output to be delivered to the patient. The controller has an interface allowing the medical professional to graphically select an amount of the therapeutic output to be delivered to the patient in at least one of a series of discrete timer intervals. The graphic selection may be aided by the use of a light pen or other pointing device to sketch the infusion pattern. Computer programs using algorithms may be utilized to translate the information inputted through the light pen into an infusion program.

A display apparatus includes a plurality of scanning lines and data lines and, at each intersection of said data lines and scanning lines, an electrochromic pixel element and a sensor element connected to the pixel element. The sensor element is sensitive to a user's graphical input, which changes a charge state of the respective pixel element. The display apparatus also includes a control means, which is configured to allow the pixel element to be selectively set to a first charge state corresponding to a first display state, or to a second charge state corresponding to a second display state. The second display state reflects the user's graphical input. The second charge state of the pixels may be brought about by exposing the sensor elements to light from a light pen or to a magnetic field from a magnetic pen, the pen being drawn across the display screen of the apparatus. Due to the direct action of the sensor elements in modulating the charge on the pixel elements, it is possible to display an image drawn on the screen instantly, without the need to scan the display to determine which pixels have changed their initial charge. This reduces the power consumption of the apparatus.

The invention relates to a method, which comprises: performing class encapsulation on each display unit of a display wall, and performing class encapsulation on lines drawn by a light pen each time; using data members to record general attributes such as stroke color, stroke thickness and the like of a certain display unit object in a display unit class, and arranging a line container inside the display unit to store the drawn lines; and judging the position of a coordinate point of a first stroke of a Chinese character first and then processing the stroke attribute according to the position of the coordinate point of the first stroke of the Chinese character under the condition of drawing a line from the first stroke of the Chinese character. The invention provides the method capable of supporting the arbitrary alteration of the attributes such as label and written stroke in a large-screen display wall system by people simultaneously. The invention not only can realize the maintenance and alteration of the attributes such as the stroke color and the stroke thickness of lines on the current screen but also can realize the maintenance of the stroke attributes of the lines in the whole display wall positioning system under the condition of cross-screen writing and labeling.

The invention relates to a pressure-sensitive handwriting pen, which comprises a continuous quantity pressure sensor arranged in a pen point and a front-end adapter circuit, a signal conditioning circuit and an output unit for outputting wired or wireless signals which are matched with the pressure sensor, wherein the continuous quantity pressure sensor has a unique mapping relationship between an output value and pressure. The pressure-sensitive handwriting pen can use a resister strain foil, a Hall element, an electret capacitor or an electret microphone, a variable capacitor and a variable inductor as a pressure sensor element, and aiming at handwriting light pens and handwriting ultraphonic pens, provides an implementation scheme that by utilizing the conventional infrared transmission unit on a handwriting pen, handwriting pressure data and the original signal system are integrated to transmit pressure data. By applying the pressure-sensitive handwriting pen, on one hand, the change of calligraphy is more abundant and is closer to natural writing, and on the other hand, the application of handwritten input products on aspects of calligraphy, painting and the like and particularly the pressure-sensitive handwriting on display screens is expanded. Various sensors used by the pressure-sensitive handwriting pen have the advantages of low cost and simple adapter circuit, and thus the pressure-sensitive handwriting pen is suitable to be popularized and used.

An image display system includes a light pen to generate light to input data, and a display panel to display images in response to the light provided from the light pen. The display panel includes a first substrate on which pixel electrodes are formed, a second substrate on which a common electrode are formed, and a photo-sensor formed on the first substrate. The photo-sensor detects the light provided from the light pen to generate a light detect signal. The image display system also includes a driving module to provide new image data to the display panel to display new images in response to the light detect signal from the photo-sensor.

An interactive display system includes a pixel-based display surface and a light pen. A sequence of patterns is projected onto the display surface. The sequence of patterns has a unique sequence of light intensities for each location of the display surface. Intensities of light at an arbitrary location are sensed by the light pen while projecting the sequence of patterns. The intensifies of light are decoded to determine coordinates of the arbitrary location.

A photo detective LCD device includes a light pen. The light pen includes a body, a driving pulse generating module and a light generating module. The body has a pen shape, and an end of the body includes an opening through which light exits. The driving pulse generating module is disposed in the body and generates first and second driving power pulses having first and second frequencies, respectively. The light generating module generates first and second light in response to the first and second driving power pulses, respectively. The first and second light flickers in a third frequency and a fourth frequency, respectively. The power consumption is reduced, and the brightness of sensing light is enhanced. The light pen generates light having at least two different frequencies, and the display device recognizes light generated from the light pen effectively. Therefore, the display device may operate without failure.

The switching matrix apparatus is provided with a plurality of relay switches for opening and closing the electrical connections between a plurality of input terminals and a plurality of output terminals, and a display unit in which a plurality of light-emitting portions are arranged in a matrix in correspondence with the respective relay switches and in which indicators indicating the positions of the light-emitting portions in at least multiple columns and rows are displayed along at least two sides of the light-emitting portions arranged in a matrix. In order to facilitate confirmation of the position of a light-emitting portion that is about to be selected or has been selected with a light pen on the display unit, light is emitted by at least one other light-emitting portion relating to the light-emitting portion that is about to be selected or has been selected.

A light pen includes a case, a light source, a pen-nib structure, a first lens device, an elastic piece, a hollow knob, and a linkage pipe. The pen-nib structure is disposed through the case. The first lens device is disposed between the light source and the pen-nib structure. The elastic piece is connected to the first lens device. The hollow knob rotatably sheathes the first lens device. The linkage pipe sheathes the first lens device and is connected to the hollow knob for driving the elastic piece to move away from the pen-nib structure when the hollow knob rotates to a first position, so that the pen-nib structure can move relative to the case. The linkage pipe is further used for being separate from the elastic piece when the hollow knob rotates to a second position, so that the elastic piece can be engaged with the pen-nib structure.

The invention discloses an optical sensing screen for selectively sensing an object and a light pen. A first photo-emitter is disposed in a light pen for emitting a first light. The optical sensing screen includes a panel, an illuminating device, at least two first photo-sensing devices, and a processor. The illuminating device is used to form a background light source. The first photo-sensing devices are used to detect the first light and the background light source. The processor is capable of calculating the coordinate of the object according to the interdicted background light source. When any of the first photo-sensing devices detects the light pen, the processor will drive the illuminating device not to form the background light source and to calculate the coordinate of the first photo-emitter according to the detected first light.

An electronic pen is provided. The electronic pen can capture the pressure, speed and motion of its tip, thereby reflecting the strength and muscularity of the handwriting.

Provided is a light pen comprising an elastic ejection assembly. In a retracting operation of the light pen, pressing a pushing rod into a barrel will move a pushing cylinder to compress a spring, push first teeth out of first grooves, clockwise turn the first teeth to move from the first groove to adjacent second groove, and cause a pilot bar to jump a pitch to completely conceal the light pen in a receptacle of an electronic device In an extending operation of the light pen, pressing the pushing rod again will clockwise turn the first teeth to move from the second groove to the adjacent first groove to cause the pilot bar to jump another pitch, and release a stored elastic force of the spring to push the pushing rod partially out of the receptacle.

The invention discloses a calibration method for a measuring head center position in a light pen-type portable three-coordinate measuring system. In the method, a light pen measuring head is put into a standard cone; a light pen is rotated slowly; after images are captured by a charge coupled device (CCD) camera and are transmitted to a computer for processing, a rotation translation matrix of a light pen coordinate system and a camera coordinate system is obtained; and because the standard cone and the CCD camera are fixed relatively, and moreover, the light pen per se is a rigid object, the coordinates of the measuring head center in the light pen coordinate system are solved by an algorithm according to the position invariance of the measuring head center in the light pen coordinate system and the camera coordinate system. By the method, the calibration of the measuring head center position in the light pen-type portable three-coordinate measuring system can be realized rapidly and accurately on the measurement scene.

A medical scale for determining the weight of a person where the person is one of self-supported, partially self-supported, and supported by a support device, such as a wheelchair. In some embodiments, the scale is provided with wheels to be portable. Also, some scales can be folded, pivoted, or adjusted into a more compact structure to be moved or stored. Some embodiments include an interface that can be swivelable and / or pivotable to allow the display to be viewed from a variety of directions. Some embodiments can also communicate with a network. The scale can also have individual adjustable load cells. The scale can also be configured to accept a Swipe card, smart card, or light pen to match patient identification with a measured weight.

The invention relates to a three-dimensional point coordinate measuring method and a measuring apparatus thereof. According to the invention, the problems on the flexibility of the system and the measuring speed are solved; therefore, the field measurement and the measurement of points that are not easy to be measured can be allowed, and the manufacturing cost can be reduced. According to the scheme of the method, a camera coordinate system is established; three-dimensional coordinates of marking points are calibrated in a light pen coordinate system, wherein the marking points are fixed on a measuring probe; spatial three-dimensional coordinates of implementation measuring time of a set of fixed marking points on the measuring probe are calculated in the camera coordinate system, and three-dimensional coordinates of the set of fixed marking points on the measuring probe are also calculated in a measuring probe coordinate system; and a logical relation of the two coordinate systems of the implementation measuring time is established; a three-dimensional coordinate of a spherical point of a spherical measuring head is calibrated in the measuring probe coordinate system; based on the above results, when the measuring is carried out, a spherical measuring head in the front of the measuring probe is contacted with a measured point to obtain a measuring point, and a coordinate of the measuring point is calculated. The measuring apparatus comprises supports, cameras, a measuring probe, a matched computer and matched software. The apparatus has two cameras, which are fixed on supports. The spherical measuring head is fixed at the front of a T-shaped rod, and a set of marking points, which are in a T-shaped form, are fixed on the T-shaped rod. According to the invention, the system has good flexibility, and the measuring speed is fast; besides, the measurement of a measuring point that is not easy to be measured is also allowed, and the cost is low.

A photo detective LCD device includes a light pen. The light pen includes a body, a driving pulse generating module and a light generating module. The body has a pen shape, and an end of the body includes an opening through which light exits. The driving pulse generating module is disposed in the body and generates first and second driving power pulses having first and second frequencies, respectively. The light generating module generates first and second light in response to the first and second driving power pulses, respectively. The first and second light flickers in a third frequency and a fourth frequency, respectively. The power consumption is reduced, and the brightness of sensing light is enhanced. The light pen generates light having at least two different frequencies, and the display device recognizes light generated from the light pen effectively. Therefore, the display device may operate without failure.

The invention discloses a light pen track identification system which is applied to electronic equipment. The identification system comprises a light pen, a camera, a track following unit, an image identification unit and a display unit, wherein the end of the pen is provided with a pressure sensing light, the camera collects a track picture of the light pen according to the indication of the pressure sensing light, the track following unit follows the track of the light pen on the collected track picture and records the track to a track recording picture, the image identification unit carries out identification processing on the track recording picture, and the display unit displays an identified result on a screen of the electronic equipment. The invention can be conveniently used for character input of the electronic equipment.

This invention relates to an optical measuring technique of three-dimensional coordinates. The measuring system of optical pen-style portable three-dimensional coordinates comprises CCD camera, computer and optical pen used as measurement sensing part. There install three optical targets in the pen and a ball probe on the pen point. The centers of the three optical targets and the ball probe lie in the same line. The optical targets are obtained by the camera, which sends the image to computer, thus realizes the three-dimensional coordinates measuring of contact points through computer. The advantage of this invention lies in that it can flexibly adjust the camera position according to the traits of the object to be measured and facilitate the application on spot and increase the flexibility of the system.

A light pen for a computer having an elongated body member which contains a photoluminescent material (PLM). The PLM absorbs ambient light of one wavelength, and radiates light of another wavelength in response. The radiated light is directed so as to be projected from a tip of the light pen as required.

Provided is a light pen comprising an elastic ejection assembly. In a retracting operation of the light pen, pressing a pushing rod into a barrel will move a pushing cylinder to compress a spring, push first teeth out of first grooves, clockwise turn the first teeth to move from the first groove to adjacent second groove, and cause a pilot bar to jump a pitch to completely conceal the light pen in a receptacle of an electronic device In an extending operation of the light pen, pressing the pushing rod again will clockwise turn the first teeth to move from the second groove to the adjacent first groove to cause the pilot bar to jump another pitch, and release a stored elastic force of the spring to push the pushing rod partially out of the receptacle.

An apparatus for providing an interface for semiconductor processing equipment is disclosed. In some embodiments, an apparatus for providing an interface for semiconductor processing equipment having an interface card includes a display logic subsystem to provide an interface to one or more devices such as video and information displays, light pens, keyboards, computer mice, and warning light networks and alarms via a data and control bus; a bridge to provide access to the data and control bus; and a local computer subsystem coupled to the bridge and the display logic subsystem, wherein the local computer subsystem provides access to one or more remote devices.

The invention belongs to the field of precise measurement and discloses a plane structured light and light pen-based precise three-dimensional measurement method for a complex part and a system for implementing the method. According to the method, the complex shape of the surface of the part is measured by a plane structured light three-dimensional measurement technology, the characteristic dimension such as an inner wall, a hole depth and the like of the part is measured by a light pen measurement technology, two digital cameras are shared by the technologies, and the three-dimensional data obtained by measuring can be automatically integrated to the same coordinate system, so a three-dimensional coordinate of an object point to be measured under a world coordinate system can be obtained. The system comprises a digital projection device, two digital cameras, a T-shaped rod, a measuring head and a computer. The advantages of high efficiency and accuracy and the like of the plane structured light three-dimensional measurement technology used for measuring the complex shape of the surface can be fully exerted, and the advantages of the light pen three-dimensional measurement technology used for measuring the characteristic dimension such as the inner wall, the hole depth and the like can be exerted. The special requirements of distribution of returned light reflection index points on the T-shaped rod are avoided, and the system has the advantages of high flexibility, convenience in carrying and the like.

The invention relates to an auxiliary focusing device for laser marking system and the application method; wherein, the device comprises two supports, and two light pens which can give off visible parallel beam and is connected with a controllable power. The supports capable of moving horizontally are arranged on the focus mirror bases at both side of the focus mirror and the two light pens are pivotally arranged on the two supports respectively. Spinning and translating locking devices are arranged on the supports and the side-to-side translation of the supports with the spinning of the light pen can adjust the beam locating on the worktable. The invention adopts the application method that: first regulating and adjusting the distance between the focus mirror and the worktable, which enables the laser beam to focus on the processing workpiece on the worktable and the strongest sparkle serves as the focal point, namely the center of the scanning area, then switching on the light pens and regulate the two beams to overlap on the sparkle on the processing workpiece and lock tightly. The regulation of the distance between the worktable and the focus mirror with the light pens coinciding on the intersection point of the optic axis of the focus mirror and the planar, and focusing and the working counter pointing are both convenient.

A portable digital and electronic nail color and design kit for quickly and easily applying various images to artificial nails that are affixed to natural human nails, and then changing the appearance of the artificial nails, includes a compact case with color, design, and picture images stored in a computer graphics program and at least three windows for selecting and displaying the various images and a light pen connected to the compact case for transferring the selected color, design, and picture image to the artificial nails by touching the light pen tip to a designated area on the upper surface of the artificial nail thereby transferring the data for that image temporarily stored in the light pen tip to the artificial nail for representation on an exceptionally high pixel count mini-monitor on the artificial nail with the compact case being battery or solar powered, and capable of accessing and downloading images stored on a computer or from web sites via the Internet, and the compact case also including calculator, date / time, and memo pad functions.

In an information management system for handling digital position data recorded by an electronic pen, the pen is controlled to convert recordings of a first code on a product to position data in a coordinate system, to convert recordings of a second code to input data, and to process the position data on the basis of the input data. The input data may define one or more functional areas in the coordinate system, and the pen may map the position data against the input data and take appropriate action if the position data is deemed to fall within a functional area. This allows the pen to be dynamically provided with a description of all or parts of the functional layout of a product, thereby reducing the need of the pen to pre-store such descriptions for all products. Encryption or usage may also be controlled based on data encoded by the second code. The product may be generated, via a computer-implemented method, to include the first code, the second code and any supporting graphics. The input data may alternatively be derived from another import interface of the pen, such as a communications interface or a replaceable memory unit.