Abstract: An input device with ghost key suppression includes a switch module, a comparator, an exchange unit, a bias voltage resistor, and a processing module. The switch module includes a plurality of strobe lines, a plurality of sense lines, and a plurality of switch units. Each of the switch units has a switch and a resistor connected in series between a corresponding one of the strobe lines and a corresponding one of the sense lines. The comparator is configured for comparing a signal received at an input end thereof with a reference signal for generating the comparison signal. The exchange unit is electrically connected to the sense lines and the comparator, and is operable in response to a control input for making and breaking electrical connection between each of the sense lines and the input end of the comparator. The processing module controls operation of the switch module and the exchange unit based on the comparison signal.

Abstract: A position detecting device includes: a position indicator operable to resonate at a first frequency, upon receipt of an excitation signal, to oscillate at a second frequency different from the first frequency so as to generate an oscillation signal, and to transmit the oscillation signal thus generated; and a position detector operable to generate the excitation signal and to transmit the excitation signal to the position indicator, and configured to perform band pass filtering and amplitude detection upon the oscillation signal received thereby for generating a processed signal, and to obtain information corresponding to position of the position indicator relative to the position detector based on the processed signal. A frequency range of the band pass filtering includes the second frequency and excludes the first frequency.

Abstract: A dual-mode input device includes a relative coordinate generator disposed in a casing for detecting motion of the casing and for generating relative coordinate information based on detected motion of the casing, and a processing unit. The processing unit includes a coordinate storing module for storing absolute coordinate information, an absolute coordinate generator for generating updated absolute coordinate information based on the relative coordinate information received from the relative coordinate generator and the absolute coordinate information received from the coordinate storing module, and for storing the updated absolute coordinate information in the coordinate storing module, and an output selecting module operable in one of a relative coordinate mode, in which the output selecting module outputs the relative coordinate information, and an absolute coordinate mode, in which the output selecting module outputs the absolute coordinate information.

Abstract: A position indicator is for use with a wireless platform operable to wirelessly transmit an excitation signal and to determine position of the position indicator relative to the wireless platform according to an oscillation signal received by the wireless platform. The position indicator includes: a working unit disposed in a casing unit, and operable to receive the excitation signal via a receiver coil, to generate the oscillation signal from the excitation signal, and to wirelessly transmit the oscillation signal via a transmitter coil; and a trigger unit disposed in the receiving space, and including a core part having first and second sections that correspond respectively in position to the transmitter and receiver coils, the first section of the core part having a varying permeability value, the second section of the core part having a substantially non-varying permeability value.

Abstract: A position detecting device includes: a position indicator operable to resonate at a first frequency, upon receipt of an excitation signal, to oscillate at a second frequency different from the first frequency so as to generate an oscillation signal, and to transmit the oscillation signal thus generated; and a position detector operable to generate the excitation signal and to transmit the excitation signal to the position indicator, and configured to perform band pass filtering and amplitude detection upon the oscillation signal received thereby for generating a processed signal, and to obtain information corresponding to position of the position indicator relative to the position detector based on the processed signal. A frequency range of the band pass filtering includes the second frequency and excludes the first frequency.

Abstract: An oscillation and rotation metric controller comprised of a scrolling wheel mechanism to oscillate for driving magnetic poles of a permanent magnet to displace thus to generate signals of changed magnetic field, signals being retrieved to achieve lateral oscillation metric control; and a knob switch encoder being fixed to the scrolling wheel mechanism to execute metric control by rotation displacement.

Abstract: A magnetic oscillation metric controller with return design comprised of a scrolling wheel mechanism, a dancer, a permanent magnet, a Hall sensor and a return structure to drive the permanent magnet by oscillation of the scrolling wheel mechanism to generate signals of changed magnetic fields resulted from displacement for achieving metric control purpose; and the return structure including an elastic stick to facilitate return after lateral or longitudinal displacement.

Abstract: A magnetic oscillation metric controller applied to computer peripheral or electronic communication system essentially operating on a scrolling wheel for lateral metric control to provide precise, consistent, reliable and programmable adjustment oscillation sensitivity by driving a permanent magnet to generate signals of changed magnetic fields resulted from displacement; and retrieving the data of changed signals for achieving metric control purpose.

Abstract: A precise, consistent, reliable, and high resolution magnetism metric controller applied in electronic and information devices is comprised of a scrolling wheel mechanism to drive by rotation a permanent magnet to retrieve signals of changed magnetic field due to displacement of magnetic poles of the permanent magnet.