A computer keyboard is refurbished by applying to its keys stickers each bearing a character designating the action of a respective key. For application of the stickers to the keys, the stickers are configured and arranged on an application tape in a layout congruent with the layout of the keys by a digital scan of the keyboard. The stickers are temporarily attached to the application tape by a peelable adhesive and then permanently attached to the keys by a pressure-sensitive permanent adhesive.

A computer keyboard is refurbished by applying to its keys stickers each bearing a character designating the action of a respective key. For application of the stickers to the keys, the stickers are configured and arranged on an application tape in a layout congruent with the layout of the keys by a digital scan of the keyboard. The stickers are temporarily attached to the application tape by a peelable adhesive and then permanently attached to the keys by a pressure-sensitive permanent adhesive.

The present disclosure provides a keycap, including: a light-guiding microstructure layer made of a first material, the light-guiding microstructure layer including a base layer and a plurality of microstructures disposed on a lower surface of the base layer; and a light-transmitting layer disposed over the light-guiding microstructure layer and in contact with the base layer, the light-transmitting layer being made of a second material different from the first material. The present disclosure further provides a method of manufacturing the above-mentioned keycap and a key structure including the above-mentioned keycap.

A quick disassembling device for keyboard switches of a mechanical keyboard includes a supporting base (1) with a hollow inside and a cube shape. One side of the supporting base (1), that is, the first side, is formed with a cross-shaped distribution the disassembling column (2) and the supporting column (3) are supported by the supporting column (3) to realize the position support and fixing of the keyboard switches, and then the disassembling column (2) can be used to disassemble the keyboard switches. The purpose of quickly disassembling the keyboard switches without damaging the keyboard switches is achieved, the disassembling is quick, convenient and labor-saving, and the adjustment hole (4) facilitates the partial disassembling of the keyboard switches in the supporting base (1).

A quick disassembling device for keyboard switches of a mechanical keyboard includes a supporting base (1) with a hollow inside and a cube shape. One side of the supporting base (1), that is, the first side, is formed with a cross-shaped distribution the disassembling column (2) and the supporting column (3) are supported by the supporting column (3) to realize the position support and fixing of the keyboard switches, and then the disassembling column (2) can be used to disassemble the keyboard switches. The purpose of quickly disassembling the keyboard switches without damaging the keyboard switches is achieved, the disassembling is quick, convenient and labor-saving, and the adjustment hole (4) facilitates the partial disassembling of the keyboard switches in the supporting base (1).

A keycap is provided, including a base element, a cap and a character element. The base element includes a board main portion. The cap has a top portion, and a skirt portion. The skirt portion surrounds the top portion. The character element, located between the board main portion and the top portion. An area of the top portion corresponding to the character element is a top area. The thickness of the top area is substantially greater than or equal to 0.01 cm and substantially less than or equal to 0.3 cm.

A system may comprise a printed circuit board (PCB) including a top surface, and a bracket including a top surface configured to receive and couple to a key switch and a bottom surface including at least two protrusions that extend normal to the bottom surface of the bracket. The bracket can be configured to mount to the PCB such that the bottom surface of the bracket is coupled to the top surface of the PCB, and the at least two protrusions may each include conductive leads that couple to the top surface of the PCB. The bracket is configured to only cover a portion of a bottom surface of the key switch when coupled to the key switch. An LED can be mounted to the top surface of the PCB, laterally adjacent to the bracket, and under the key switch at a location not covered by the bracket.

A method and apparatus for ranging finding of signal transmitting devices is provided. The method of signal reception is digitally based only and does not require receivers that are analog measurement devices. Ranging can be achieved using a single pulse emitting device operating in range spaced relation with a minimum of a single signal transmitter and a single digital receiver and processing circuitry. In general a plurality of transmitting pulsed emitters may be ranged and positioned virtually simultaneously in 3-dimensions (XYZ coordinates) using a configuration of a plurality of digital receivers arranged in any fixed 3-dimensional configuration. Applications may involve at least one single transmitter to receiver design to determine range, or at least one transmitted reflecting signal off from an object to determine range.

A method and apparatus for ranging finding of signal transmitting devices is provided. The method of signal reception is digitally based only and does not require receivers that are analog measurement devices. Ranging can be achieved using a single pulse emitting device operating in range spaced relation with a minimum of a single signal transmitter and a single digital receiver and processing circuitry. In general a plurality of transmitting pulsed emitters may be ranged and positioned virtually simultaneously in 3-dimensions (XYZ coordinates) using a configuration of a plurality of digital receivers arranged in any fixed 3-dimensional configuration. Applications may involve at least one single transmitter to receiver design to determine range, or at least one transmitted reflecting signal off from an object to determine range.

A keyboard (110) includes a base board (116), keys (112), pitfalls (120) and a mode control mechanism (118). The keys (112) include cups (1124), and the mode control mechanism (118) may switch the keyboard (110) especially the key cups (1124) between different modes. In case that the keyboard (110) is not in use, these cups (1124) can be received in the pitfalls (120) to reduce the profile of the keyboard (110). In case that the keyboard (110) is to be used, the keys (112) may be raised up and arranged on the base board (116) in order to enable long keystroke and provide good typing experience.