Patent application number | Description | Published |
20090021461 | Monochromatic liquid crystal display for colors - Techniques for providing backlight techniques in liquid crystal flat panel displays are disclosed. According to embodiment, the backlighting includes three color groups of light emitting diodes that are turned on successively. Pixels in an LCD are controlled in accordance with a display signal to transmit none, all or a determined amount of one or more of the colored lights from the three color groups of light emitting diodes in a cycle, resulting in an LCD with vivid colors and minimized tailing effects. | 01-22-2009 |
20100053082 | REMOTE CONTROLS FOR ELECTRONIC DISPLAY BOARD - Techniques for interacting with an electronic display board are disclosed. According to one embodiment, a remote controller includes a laser generator, several motion sensors, a Micro Central Unit has data process capability and memory inside to store programs and a transceiver or a transmitter. A laser beam from the laser generator facilitates a writing movement on the electronic data board, the motion sensors detect the movement of the remote controller, and the MCU calculate the sensor data to derive the movement, the transmitter transmits the movement from the controller to the electronic data board. In accordance of the detected movement, the movement of the remote controller corresponding to the laser is electronically represented on the electronic display board. | 03-04-2010 |
20100056049 | Wireless Mobile Telescanners - A mobile scanner with telecommunication functions is disclosed. The mobile scanner is designed to be able to wirelessly transport scanning data to a computing device (e.g., a fax machine or an email server). Unlike a USB-based mobile scanner, the scanner operates without being connected to a computing device. With an embedded wireless module, the scanning data can be transported via a standard wireless protocol (e.g., WiFi, WiMAX, or Bluetooth), or a standard cellular standard (e.g., GSM or CDMA). | 03-04-2010 |
20120026212 | LED backlighting for liquid crystal display (LCD) - Techniques for providing LED-based backlighting in liquid crystal flat panel displays are disclosed. In one embodiment, the backlighting includes at least three color groups of light emitting diodes (LEDs) that are turned on successively for one frame of image. Liquid crystals (pixels) in an LCD are controlled in accordance with a display signal to transmit none, all or a determined amount of one or more of the colored lights from the three color groups of light emitting diodes in a cycle, resulting in an LCD with vivid colors and minimized tailing effects. | 02-02-2012 |
20120299890 | BALANCED LED BACKLIGHTING FOR LIQUID CRYSTAL DISPLAY (LCD) - Techniques for providing LED-based backlighting in liquid crystal flat panel displays are disclosed. In one embodiment, optical sensors are provided to sense illuminations from colored LED groups and provide feedback signals to a controller so that a desired ratio of the illuminations is maintained. As a result, true colors could be reproduced regardless of possible irregularities that may be happening to LEDs used in the colored LED groups to backlight an LCD panel. | 11-29-2012 |
20150181059 | Method and apparatus for scanning through a display screen - Scanners built in display devices that can be controlled to have a moment of see-through either entirely or on a specified portion are described. During the see-through moment, a scanning object (e.g., a currency bill) placed against the display is scanned, hence on-screen scanner. An exemplary such display device is a Liquid Crystal Display (LCD). Without affecting the display functions of an LCD device, an image sensing module is provided with light sources. By controlling the liquid crystals in the LCD unit, the reflected light from an object placed against the LCD device to be imaged is projected onto an image sensor (or array) to generate an image of the object. | 06-25-2015 |
20150252974 | Enhanced Illumination Efficacy of White Color from Green Laser and Magenta Phosphor - Techniques related to generating daylight-like light from green laser and magenta phosphor are disclosed. Such light may be used in headlights of vehicles. The daylight-like light generated from green laser and filtered through magenta phosphor is almost white or substantially white. The white laser is generated from green laser that is filtered through magenta phosphor. The green laser is well known for producing the highest perceived intensity among all colored lasers with equal or similarly provided energy and is low to obtain in cost. | 09-10-2015 |