Logitech Europe S.a.

Yu-Sen Chen

Jérémie Willemin

Laurent Plancherel

Keson Tsao

Anthony Vuillemin

Chi-Hsun Tsao

Yu Shiang Lai

A keyboard system including a plurality of hybrid key structures configured in an array of subarrays, each of the plurality of hybrid key structures configured within a subarray and including a depressible element, a first type of key switch configured to generate a first signal when the depressible element is activated, a second type of key switch configured to generate a second signal when the depressible element is activated, and processor(s) configured to: receive a first signal from an activated hybrid key structure when its corresponding depressible element is activated; determine a corresponding subarray that the activated hybrid key structure is configured within; scan the corresponding subarray for a generated second signal; detect the generated second signal from the corresponding subarray; identify the activated hybrid key structure based on the detected, generated second signal; and register a key press for the identified activated hybrid key structure.

Partial scanning in a hybrid switch array

A keyboard system comprises a key structure including a key switch with a lighting element and phototransistor, and one or more processors that drive the lighting element for a first pulse duration. The output of the phototransistor is determined at the end of the first pulse duration, wherein the key structure is determined to be pressed when the output is below a first output value at an end of the first pulse duration, and unpressed when the output of the phototransistor is above a second output value at the end of the first pulse duration. A fall-time of the output during the first pulse duration is determined and the first pulse duration is calibrated to a second pulse duration when the fall time less than the first pulse duration, the second pulse duration being greater than the fall time and less than the first pulse duration.

IR timing calibration for a key switch

Some embodiments of the present disclosure propose a scroll wheel module that may be mounted in a mouse. The scroll wheel module may include a base plate; a carriage coupled to the base plate, wherein the carriage defines a cradle space comprising a first side wall; a scroll wheel at least partially rotatably received within the cradle space, wherein the scroll wheel comprises a shaft defining a hollow interior; a circuit board comprising a first leg and a second leg coupled with each other, wherein the first leg is coupled to the first side wall, and the second leg extends in the hollow interior of the shaft; and one or more light emitting elements coupled to the second leg of the circuit board.

Growing community of inventors

Hsinchu County, Taiwan

Yu-Sen Chen