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Browse by Category: Main > Information Technology
Class Information
Number: 341/31
Name: Coded data generation or conversion > Bodily actuated code generator > Including keyboard or keypad > Photoelectric actuation
Description: Subject matter in which the operation of a control element is sensed by an electrical light sensor.










Patents under this class:
1 2 3 4 5

Patent Number Title Of Patent Date Issued
8643481 Interior rearview mirror assembly with integrated indicator symbol Feb. 4, 2014
8570194 Clutch-height adjustment in an optical tracking device Oct. 29, 2013
8456821 Server Jun. 4, 2013
8442578 Mobile personal services platform for providing feedback May. 14, 2013
8362928 Keypad assembly Jan. 29, 2013
8319671 Keypad structure Nov. 27, 2012
8314714 Method and device for manual triggering Nov. 20, 2012
8294601 Detection of intended key activation on a mobile device Oct. 23, 2012
8269123 Image display device with plural light emitting diodes Sep. 18, 2012
8242938 Luminous keyboard Aug. 14, 2012
8026827 Virtual push button switch Sep. 27, 2011
7924175 Optical keypad for electronic device Apr. 12, 2011
7888627 Optical encoder having a stray-light reduction element for reducing strat-light Feb. 15, 2011
7786425 Optical sensor Aug. 31, 2010
7750892 Portable interactive communication systems Jul. 6, 2010
7656314 Input device Feb. 2, 2010
7629965 Keypad backlighting of mobile terminal Dec. 8, 2009
7601948 Encoder device and alignment device for an encoder device Oct. 13, 2009
7554077 Encoder Jun. 30, 2009
7544924 Directional input device with a light directing shaft Jun. 9, 2009
7525113 Optical scanning unit and method for mounting the same Apr. 28, 2009
7525454 Keypad assembly for a portable terminal Apr. 28, 2009
7501570 Electric wind instrument and key detection structure thereof Mar. 10, 2009
7446677 Method and apparatus for optically detecting selections made on an input device Nov. 4, 2008
7432911 Keyboard for mobile devices Oct. 7, 2008
7414238 Optical encoder device for small-sized motor and method of producing the same Aug. 19, 2008
7391012 Apparatus for detecting rotational angle of rotational element and detecting method thereof Jun. 24, 2008
7378990 Laser locus ball apparatus for a wireless keyboard May. 27, 2008
7271743 Switch arrangement and a switch matrix structure for a keypad Sep. 18, 2007
7271797 Optical window for generating a waveforms Sep. 18, 2007
7268705 Input detection based on speckle-modulated laser self-mixing Sep. 11, 2007
7265338 Photoelectric encoder using an incoherent semiconductor light source Sep. 4, 2007
7193535 Illuminated keyboard Mar. 20, 2007
7193536 Illuminated keyboard Mar. 20, 2007
7064744 Optical induction/trackball dual-mode mouse Jun. 20, 2006
7060968 Method and apparatus for optical encoding with compressible imaging Jun. 13, 2006
7053799 Keypad with illumination structure May. 30, 2006
7042371 Optical keyboard with geodesic optical elements May. 9, 2006
7026959 Optical joystick module Apr. 11, 2006
6965327 Device and method for evaluating a useful signal originating from a proximity sensor Nov. 15, 2005
6958469 Diffraction grating interference system encoder for detecting displacement information Oct. 25, 2005
6946980 Input device Sep. 20, 2005
6927388 Optical encoder Aug. 9, 2005
6875977 Optoelectronic keypad and method for controlling an optoelectronic keypad Apr. 5, 2005
6833825 Apparatus for remotely controlling a digital processing system Dec. 21, 2004
6809661 Keypad device Oct. 26, 2004
6806815 Keypad structure with inverted domes Oct. 19, 2004
6741189 Keypad having optical waveguides May. 25, 2004
6705783 Ruggedized keyboard with cursor positioning device Mar. 16, 2004
6696987 Electronic device with illuminated operator button, the activation of said operator buttons being determined by detection of the change in the luminous reflectance Feb. 24, 2004

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