Abstract: A keyboard includes a backlight module, a base plate, a membrane circuit disposed on the base plate, and a plurality of key structures disposed on the membrane circuit. The backlight module includes a light source, a reflective layer, a light guide layer, and a shielding layer. The light source is disposed corresponding to the light guide layer. The light guide layer is located between the shielding layer and the reflective layer. The light guide layer has a through-hole. The shielding layer and the reflective layer are in contact with each other in the through-hole of the light guide layer. The base plate is disposed on the shielding layer. The base plate has a positioning portion disposed corresponding to the through-hole of the light guide layer, which protrudes toward the reflective layer or the membrane circuit.

Abstract: A power conversion device used in electric vehicles includes a transmission assembly and a power converter. The transmission assembly is detachably connected to the electric vehicle and receives a first power from the battery pack of the electric vehicle. The power converter is electrically connected to the transmission assembly and converts the first power into a second power or a third power. The power converter is configured outside the electric vehicle.

Abstract: A power conversion device includes a conversion device having includes a first, a second, a third and a fourth converter, and a control unit. The first converter has a first input terminal and a first output terminal; the second converter has a second input terminal and a second output terminal; the first and the second input terminal are electrically connected to a power supply. The third converter has a third input terminal and a third output terminal, the third input terminal is coupled to the first output terminal; the fourth converter has a fourth input terminal and a fourth output terminal; the fourth input terminal is coupled to the second output terminal, and the third output terminal is electrically connected to the fourth output terminal. The control unit is coupled to the conversion device, receives a power request from a load, and controls an output power of the conversion device.

Abstract: An input apparatus includes a light guide plate, a first light source, a second light source, a layer, a first group of keycaps and a second group of keycaps. The light guide plate has a first axis and a second axis perpendicular to the first axis, the light guide plate includes a first light guide region and a second light guide region connected with each other by a first junction. The first light source corresponds to the first light guide region. The second light source corresponds to the second light guide region, and the first light source and the second light source are disposed along the first axis. The layer is disposed on a side of the light guide plate, the layer is provided with an extension part extending into a portion between the first light guide region and the second light guide region.

Abstract: A data retransmission method includes configuring the quantity of code block groups in a transport block and configuring a plurality of physical resource groups; configuring the quantity of physical resources included in each of the physical resource groups according to the different quantities of code block groups; selecting the physical resources included in the physical resource group that corresponds to the initial transmission to send the transport block; determining the quantity of code block groups that were erroneously sent in the transport block according to the response; selecting one of the physical resources in one of the physical resource groups that corresponds to the retransmission to send at least one code block group that was erroneously sent according to the quantity of code block groups that were erroneously sent; and completing the retransmission only after all of the code block groups in the transport block have been successfully sent.

Abstract: A housing structure including a first housing and a second housing is provided. The first housing includes a first body and at least one metal fixing part protruding from the first body. The second housing includes a second body and at least one receiving part. The at least one metal fixing part leans against the at least one receiving part in a bent manner, such that the first housing is fixed on the second housing.

Abstract: The present invention discloses a battery module and a power arrangement method. The battery module includes a battery unit, an energy storage element, a switch, a functional circuit and a control unit. The energy storage element is coupled to the battery unit. The switch is coupled to the energy storage element. The functional circuit is respectively coupled to the battery unit and the energy storage element. The control unit is respectively coupled to the functional circuit and the switch, configured to control the functional circuit to cause the energy storage element to be coupled to the battery unit so that the battery unit charges the energy storage unit, or configured to control the functional circuit to cause the energy storage element to be decoupled with the battery unit so that a discharge path is formed.

Abstract: A key module includes a keycap, an indicator light source, a first backlight source and a second backlight source. The keycap includes an indication area and a character area. The indicator light source is configured to emit an indicating light of a first color toward the indication area. The first backlight source is configured to emit a first backlight of the first color toward the character area. The second backlight source is configured to emit a second backlight of a second color toward the character area, wherein the second color is different from the first color. As a result, the key module could display the light of different colors based on different operations, thereby being distinguishable from the color of the light emitted by the adjacent key module.

Abstract: A fastening assembly includes: a first sleeve, a second sleeve, a positioning element, a driven element and an elastic element. The first sleeve includes a plug tube having a passage communicating with the first sleeve. The second sleeve is integrated into the first sleeve. The driven element includes an inserting rod movably inserted in the passage along a first direction and a guiding portion having a first inclined guiding surface forming a first acute angle with the first direction. The positioning element includes a guide rod movably inserted in the second sleeve along the second direction and a slide block connected to the guide rod and in sliding contact with the first inclined guiding surface. One end of the elastic element leans against the driven element, and the other end of the elastic element leans against the first sleeve.

Abstract: A light-emitting keyboard includes a bracket, keycaps, a circuit layer and a composite light-emitting layer. The keycaps are disposed on the bracket and connected to the bracket. The circuit layer is disposed between the keycaps and the bracket. The composite light-emitting layer is disposed under the bracket, and includes a substrate, a conductive layer and light sources. The substrate includes a connection portion and extension portions respectively connected to the connection portion. A gap is positioned between any two adjacent extension portions, and a width of the gap is greater than or substantially equal to a width of any of the two adjacent extension portions. The conductive layer is disposed on the substrate. The light sources are disposed on the extension portions.

Abstract: A key module includes a bottom plate, a circuit layer, a key cap, a supporting structure, a touch member, and a flexible circuit board. The bottom plate has a first surface and a second surface opposite to each other. The circuit layer is disposed on the first surface and has a first opening. The key cap is disposed above the circuit layer and covers the first opening. The supporting structure is disposed between the bottom plate and the key cap. The touch member is disposed at the key cap. The flexible circuit board is electrically connected to the touch member and passes through the first opening to extend next to the second surface of the bottom plate. When the key cap moves downward relative to the bottom plate, a portion of the flexible circuit board located between the key cap and the bottom plate is bent.

Abstract: A light emitting device and a light source module are provided. The light emitting device includes a base, a conductive unit, a light unit, and a package. The base includes a first substrate and n through holes, and the through holes pass through the first substrate. The conductive unit includes m conductors that are separate from each other, and the conductors pass through the first substrate. The light unit is electrically connected to the conductors. The package includes a first package body surrounding the light unit and a second package body covering the light unit and the first package body. The first package body and the second package body have different optical properties. Furthermore, m and n are integers greater than or equal to 2, and m is greater than or equal to n.

Abstract: The present invention discloses a rolling mechanism and a mouse device using the same. The rolling mechanism comprises a base, a circuit module, a roller module, an encoding element and an elastic element. The circuit module is disposed on the base. The roller module is disposed on the circuit module and movable on the base. The encoding element is disposed on the circuit module and electrically connected with the circuit module, and further connected to the roller module. The elastic element is disposed between the roller module and the encoding element, and the elastic element is propped against the roller module. The mouse device comprises a mouse body and a rolling mechanism disposed in the mouse body.

Abstract: A backlight module including a circuit layer, a light guide plate, a light-emitting component, an electronic component, a reflective layer, and an identifier is provided. The light guide plate includes an escape opening and a light-source opening. The light-emitting component is connected to the circuit layer. The electronic component is connected to the circuit layer. The reflective layer is disposed between the light guide plate and the circuit layer. The identifier is disposed on the reflective layer. A keyboard using this backlight module is also provided.

Abstract: An input apparatus includes a reflection layer, a light guide plate, a first light source, a second light source and a light absorption member. The light guide plate is disposed on the reflection layer and includes a first light guide region and a second light guide region connected with each other by a junction, a first area of the first light guide region is different from a second area of the second light guide region. The first light source corresponds to the first light guide region. The second light source corresponds to the second light guide region, the light guide plate has a first opening structure disposed between the first light source and the second light source. The light absorption member is disposed at a position corresponding to the first opening structure.

Abstract: A key structure including a carrier, a keycap, a lifting member, and an elastic member is provided. The carrier includes a carrier body and multiple positioning hooks. The carrier body has multiple vias, and the positioning hooks are respectively disposed corresponding to the vias. Orthographic projection of each of the positioning hooks falls in the corresponding via. Each of the positioning hooks includes a first positioning portion and a second positioning portion respectively connected to two inner wall surfaces in the corresponding via. The keycap is disposed above the carrier body. The lifting member is disposed between the carrier body and the keycap. One end of the lifting member is connected to the keycap, and an other end of the lifting member is connected to the positioning hooks. The elastic member is disposed between the carrier body and the keycap.

Abstract: A protection circuit including an auxiliary winding, a rectifier unit, the filter unit, a voltage divider unit and a controller is provided. The auxiliary winding is configured to induce an AC voltage. The rectifier unit is coupled to the auxiliary winding and configured to rectify the AC voltage into a DC voltage. The filter unit is coupled to the rectifier unit and configured to filter the DC voltage into a DC filter voltage. The voltage divider unit is coupled to the rectifier unit and the filter unit to transmit the DC filter voltage. The controller is coupled to the voltage divider unit and configured to detect a partial voltage of the DC filter voltage and detect whether to activate a protection mechanism according to the partial voltage.

Abstract: A key structure is provided. The key structure includes a base plate, a keycap, a positioning element and a rod. The base plate has a through hole. The positioning element is engaged with the through hole. A projection area of the positioning element on the base plate along a lifting direction of the keycap is larger than an area of the through hole.

Abstract: A backlit keyboard includes key switches and a backlight module. The backlight module includes a light guide plate, a reflecting surface, and at least one light-emitting device. The light guide plate is provided with light-guiding dots disposed on a bottom surface thereof. A light-shielding layer disposed on the light guide plate has a light-shielding portion and a light-transmitting portion corresponding to at least one of the key switches. The reflecting surface faces the bottom surface of the light guide plate, and a pattern at least partially overlaps the light-shielding portion. A first light-emitting device and a second light-emitting device are disposed in an opening of the light guide plate, and the first light-emitting device and the second light-emitting device face respective sidewalls of the opening. The first light-emitting device is located underneath the light-shielding portion.

Abstract: The fixing device includes a limiting structure and a movement portion. The limiting structure is extended along a first direction and has an accommodation space and at least one pair of hooks disposed at a terminal end of the limiting structure. The extending directions of the at least one pair of hooks are opposite to each other and parallel to a second direction. The movement portion moves relative to the limiting structure. When a bottom of the movement portion is disposed above the at least one pair of hooks, the at least one pair of hooks has a first distance therebetween in the second direction. When the bottom of the movement portion overlaps the at least one pair of hooks in the second direction, the at least one pair of hooks has a second distance greater than the first distance therebetween in the second direction.