Abstract: In an optical touch device and locating method thereof, light sensor modules are mounted on a panel body. Each light sensor module includes an array of light sensors each assigned with an individual index corresponding to angle information thereof. A look-up table includes the angle information corresponding to the indexes assigned respectively to the light sensors of the light sensor modules. A processing unit receives from each light sensor module a number of sensing signals generated by a series of the light sensors in response to touching of an object in a touch area of the panel body, and determines a position of a touch point of the object in the touch area based on the sensing signals from the light sensor modules, and the look-up table.

Abstract: An optical touch device includes: two light beam scanning modules each scanning a touch region of a panel body with a scanning light beam, whose incident angle varies with time, and outputting a time index signal associated with the incident angle; two light sensor modules each sensing a corresponding reflected scanning light beam generated due to presence of a touch within the touch region so as to output a sensing signal; and a processing unit for locating the touch based on the time index signal from each light beam scanning module, the sensing signal from each light sensor module, and a look-up table having pieces of angle information corresponding to a series of time indexes and associated with the incident angle of each scanning light beam.

Abstract: An electromagnetic-type touch input device of a touch display device includes: a main sensor board disposed under a liquid crystal display (LCD) module for sensing an electromagnetic wave signal from an electronic stylus upon a touching by the electronic so as to generate a first sensing output; an auxiliary periphery sensor disposed on a top surface of the LCD module configured with a peripheral non-display area surrounding a central display area, and including X-axis and Y-axis antenna coils disposed above said peripheral non-display area of the LCD module for sensing the electromagnetic wave signal from the electronic stylus upon the touching by the electronic stylus so as to generate a second sensing output; and a control unit outputting an input signal associated with a two-dimensional coordinate and corresponding to a location of a touch point of the electronic stylus based on the first and second sensing outputs.

Abstract: An optical touch device includes: two light beam scanning modules each scanning a touch region of a panel body with a scanning light beam, whose incident angle varies with time, and outputting a time index signal associated with the incident angle; two light sensor modules each sensing a corresponding reflected scanning light beam generated due to presence of a touch within the touch region so as to output a sensing signal; and a processing unit for locating the touch based on the time index signal from each light beam scanning module, the sensing signal from each light sensor module, and a look-up table having pieces of angle information corresponding to a series of time indexes and associated with the incident angle of each scanning light beam.

Abstract: An electromagnetic inductive input apparatus includes a signal transmitting device including a signal transmitter, and a signal receiving device. The signal receiving device includes a transparent substrate, first and second sets of transparent conductors disposed on the transparent substrate, and formed as spacedly arranged straight non-loop lines, and a control device electrically coupled to the transparent conductors and operable to detect a detected signal from the transparent conductors, and to determine a position of the signal transmitting device relative to the transparent substrate.

Abstract: In an optical touch device and locating method thereof, light sensor modules are mounted on a panel body. Each light sensor module includes an array of light sensors each assigned with an individual index corresponding to angle information thereof. A look-up table includes the angle information corresponding to the indexes assigned respectively to the light sensors of the light sensor modules. A processing unit receives from each light sensor module a number of sensing signals generated by a series of the light sensors in response to touching of an object in a touch area of the panel body, and determines a position of a touch point of the object in the touch area based on the sensing signals from the light sensor modules, and the look-up table.

Abstract: A stylus input device includes a grip, a surface-contacting member, a pivot joint, and first and second sensor modules. The pivot joint is disposed to connect the grip to the surface-contacting member and permit tilting of the grip relative to a working surface when the surface-contacting member is in intimate contact with the working surface, and is configured to permit and guide axial displacement of the grip relative to the surface-contacting member. The first and second sensor modules are disposed respectively in the surface-contacting member and the grip for sensing two-dimensional movement of the surface-contacting member on the working surface and axial displacement of the grip so as to respectively generate a two-dimensional movement signal and an axial displacement signal that are to be converted into a positioning signal by a processing unit for subsequent transceiving by a transmitting module.

Abstract: The present invention provides an antenna loop and its layout for low-level digital tablets. The antenna loop for low-level digital tablets in the present invention consists of enameled wire; the layout comprises a single antenna loop consisting of enameled wire. Each antenna loop comprises a plurality of close circles. Furthermore, the circles of odd ordinal numbers comprise odd sections, for instance, the third circle comprises three sections; the circles of even ordinal numbers comprise even sections, for instance, the fourth circle comprises four sections; each section comprises induction areas of substantially the same size. Furthermore, the final section is an open section so that through which the second terminal of the enameled wire loop can stretch out and electrically couple with the ground wire.

Abstract: In a method and apparatus for detecting the position of a coordinate probe relative to a digitizing tablet, a sensing coil grid provided on a working region of the tablet includes a plurality of sensing coils, each of which is U-shaped and has a front section and a grounded rear section. The coils are arranged in parallel along an axis of the working region in an overlapping manner with the front sections of consecutive ones of the coils being arranged in succession, and with the rear sections of the coils also being arranged in succession.