A keyboard device includes a keyboard module and an illumination module. The keyboard module includes plural first keys and at least one second key. The illumination module includes a light guide plate and a circuit board. The light guide plate includes plural first mapping zones and a second mapping zone. The first mapping zones are located under the corresponding first keys. The second mapping zone is located under the second key. Moreover, at least one side-view light-emitting element and at least one top-view light-emitting element are installed on the circuit board. The side-view light-emitting element emits a first light beam. The top-view light-emitting element emits a second light beam. The first light beam is extracted through the corresponding first mapping zone and transferred to the corresponding first key. The second light beam is transferred to the second key.

A keyboard device includes a bottom cover, a supporting plate, a flexible circuit board and plural key structures. The supporting plate is installed on the bottom cover. The supporting plate has a curved arc-shaped profile that is bent upwardly in a direction away from the bottom cover. The supporting plate includes plural perforations. The flexible circuit board is arranged between the bottom cover and the supporting plate. The plural key structures are installed on the supporting plate. The plural key structures are penetrated through the corresponding perforations and contacted with the flexible circuit board.

Regarding a tactile presentation panel, a tactile presentation panel that has a tactile presentation knob having a conductive member placed on an operation surface and presents a tactile sense to a user via the tactile presentation knob includes a movement amount calculation circuit that calculates a movement amount of the tactile presentation knob from current coordinates on the tactile presentation panel of the tactile presentation knob and past coordinates of the tactile presentation knob, a tactile strength calculation circuit that calculates a tactile strength to be applied to the user based on the movement amount, and a tactile presentation circuit that sets a voltage signal waveform based on the tactile strength. The movement amount is at least one of a rotation angle and a rotation speed of the tactile presentation knob.

A keypad includes a support, a snap disk on a first side of the support transformable from a released state to a loaded state, a cover forming a seal over the first side, a pocket in the cover, a magnet and a plunger disposed in the pocket, the plunger adapted to engage and transform the snap disk to the loaded state, a magnetic field sensor on a second side of the support, the second side opposite the first side and logic circuitry adapted to obtain a value of a strength of a magnetic field from the sensor, compare the value against a predetermined threshold value that corresponds at least approximately to the strength of a magnetic field, and when the plunger has transformed the snap disk to the loaded state and the value reaches or exceeds the threshold value, output a signal indicating that a key press occurred.

This disclosure relates to speakers and more specifically to an array speaker for distributing music uniformly across a room. A number of audio drivers can be radially distributed within a speaker housing so that an output of the drivers is distributed evenly throughout the room. In some embodiments, the exit geometry of the audio drivers can be configured to bounce off a surface supporting the array speaker to improve the distribution of music throughout the room. The array speaker can include a number of vibration isolation elements distributed within a housing of the array speaker. The vibration isolation elements can be configured reduce the strength of forces generated by a subwoofer of the array speaker.

A hand-held device with a sensor for providing a signal indicative of a position of the hand-held device relative to an object surface enables power to the sensor at a first time interval when the hand-held device is indicated to be in a position that is stationary and adjacent relative to the object surface, enables power to the sensor at a second time interval shorter than the first time interval when the hand-held device is indicated to be in a position that is moving and adjacent relative to the object surface, and enables power to the sensor at a third time interval when the hand-held device is determined to be in a position that is removed relative to the object surface.

Lightweight synthetic particles that replace traditional aggregates and methods of producing the same are disclosed herein.

Lightweight synthetic particles that replace traditional aggregates and methods of producing the same are disclosed herein.

A push button-equipped touch panel includes a touch panel, a cover panel and a push button part. The cover panel is disposed on an operation surface side of the touch panel and has a through hole. The push button part is disposed in the through hole of the cover panel.

A sensor is provided with a conductor layer, a sensor layer including a plurality of sensor units, and a separating layer which separates the conductor layer from the sensor layer, the sensor unit is formed of alternately arranged first and second electrode elements, and sensitivity on an outer periphery of the sensor unit is higher than the sensitivity in a central portion of the sensor unit.