Sunrex Technology Corporation

Gimbal Technology Co., Ltd.

Shun-Pin Lin

Chih-Cheng Lee

Hsing-Kuang Chen

A keyboard assembly includes a chassis formed with a plurality of cavities, a key unit including a plurality of key modules, and a scanning unit. Each key module is mounted in a respective one of the cavities, and has an individual resonant frequency. The scanning unit emits a detecting signal repeatedly, where a frequency of the detecting signal in each repetition being a different one of a plurality of scanning frequencies. The scanning unit and the key modules are configured such that, for each key module, when the frequency of the detecting signal is one of the scanning frequencies that matches the individual resonant frequency of the key module, the key module reaches electromagnetic resonance and the scanning unit acquires a response signal corresponding to the key module in response to the electromagnetic resonance.

Keyboard assembly

A rotational input device is to be operated, and includes a device body, a rotatable unit rotating in response to operation, a sensing unit detecting an amount of rotation of the rotatable unit to generate a detection signal, and a processing unit connected to the sensing unit. After receiving the detection signal, the processing unit calculates an angular acceleration of the rotatable unit based on the detection signal, and determines whether the angular acceleration is greater than a predetermined threshold. In the affirmative, the processing unit divides the amount of rotation by a preset amount of rotation to obtain a first output value, and generates an input signal based on a second output value that is determined based on the first output value.

Rotational input device

A position detecting method includes: transmitting to a position indicator a first excitation signal that has a variable frequency and then receiving a first response signal therefrom, via a target antenna unit including a target antenna; determining, based on the first response signal, a target frequency of the first excitation signal at which the first response signal has a maximum energy level; continuously transmitting to the position indicator a second excitation signal that has the target frequency and then receiving a second response signal from the position indicator, via a group of antenna units including the target antenna unit individually and successively; and obtaining position information corresponding to the position indicator based on the second response signal.

Position detecting method and system

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.

Input device with ghost key suppression

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.

Position detecting device

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.

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Taipei, Taiwan

Shun-Pin Lin