Abstract: A power supply circuit for stably supplying power to loads of a vehicle comprises a battery pack, a switch circuit, a first control circuit, a detection circuit, and a second control circuit. The first control circuit is configured to output a first control signal to turn on the switch circuit and the battery pack can supply power to the loads when the vehicle is in a first state. The detection circuit is configured to detect whether the first control circuit normally outputs the first control signal during the first state and output a trigger signal to the second control circuit in response to the first control circuit does not output the first control signal. The second control circuit outputs a second control signal according to the trigger signal to control the switch circuit to be turned on. A power supply method and the vehicle are also disclosed.

Abstract: A backlight module applicable to a key module is provided, the key module includes a plurality of key units and a baseplate, and the plurality of key units are disposed on the baseplate. The backlight module includes a lower substrate, a plurality of periphery light sources disposed along the peripheral of the baseplate, and a shielding structure. The lower substrate is disposed below the baseplate, and there is an outer edge gap between an outer edge of the baseplate and the lower substrate. The periphery light sources are disposed between the baseplate and the lower substrate. The shielding structure is disposed outside those periphery light sources distributed, to prevent light provided by the plurality of light sources from being emitted out of the outer edge gap.

Abstract: A backlight module applicable to a key module is provided, the key module includes a plurality of key units and a baseplate, and the plurality of key units are disposed on the baseplate. The backlight module includes a lower substrate, a plurality of periphery light sources disposed along the peripheral of the baseplate, and a shielding structure. The lower substrate is disposed below the baseplate, and there is an outer edge gap between an outer edge of the baseplate and the lower substrate. The periphery light sources are disposed between the baseplate and the lower substrate. The shielding structure is disposed outside those periphery light sources distributed, to prevent light provided by the plurality of light sources from being emitted out of the outer edge gap.

Abstract: A backlight module applicable to a key module is provided, the key module includes a plurality of key units and a baseplate, and the plurality of key units are disposed on the baseplate. The backlight module includes a lower substrate, a plurality of periphery light sources disposed along the peripheral of the baseplate, and a shielding structure. The lower substrate is disposed below the baseplate, and there is an outer edge gap between an outer edge of the baseplate and the lower substrate. The periphery light sources are disposed between the baseplate and the lower substrate. The shielding structure is disposed outside those periphery light sources distributed, to prevent light provided by the plurality of light sources from being emitted out of the outer edge gap.

Abstract: A keyboard with light-emitting and touch functions includes a keyswitch, a backlight module having a light source and a light guide plate, a membrane, a capacitive touch sensing sheet disposed on the membrane and the light guide plate, and a board. The keyswitch includes a cap and a support mechanism movably connected to the cap. Light of the light source is incident into the light guide plate and is emitted toward the cap. The membrane has a switch and is selectively disposed on or under the backlight module. The board is disposed under the backlight module and the membrane and has first and second connection members. The first and second connection members pass through the membrane, the light guide plate and the capacitive touch sensing sheet to be movably connected to the support mechanism, so as to make the cap movable downward relative to the board for triggering the switch.

Abstract: A receiving device is provided. The receiving device includes an antenna device, a filter circuit, a transceiver, an adjustable attenuator, a circulator, and a processor. The antenna device receives a received signal. The filter circuit separates an in-band signal and an out-band signal from the received signal. The adjustable attenuator adjusts the attenuation value corresponding to the in-band signal and transmits the adjusted in-band signal to the transceiver. The circulator receives the received signal from the antenna device and transmits the received signal to the filter circuit, and the circulator receives a reflected signal from the filter circuit. The processor determines how to adjust the attenuation value corresponding to the in-band signal according to information related to the out-band signal and information related to the in-band signal that has been processed by the adjustable attenuator and the transceiver.

Abstract: A receiving device is provided. The receiving device includes an antenna device, a filter circuit, a transceiver, an adjustable attenuator, a circulator, and a processor. The antenna device receives a received signal. The filter circuit separates an in-band signal and an out-band signal from the received signal. The adjustable attenuator adjusts the attenuation value corresponding to the in-band signal and transmits the adjusted in-band signal to the transceiver. The circulator receives the received signal from the antenna device and transmits the received signal to the filter circuit, and the circulator receives a reflected signal from the filter circuit. The processor determines how to adjust the attenuation value corresponding to the in-band signal according to information related to the out-band signal and information related to the in-band signal that has been processed by the adjustable attenuator and the transceiver.

Abstract: A keyboard with light-emitting and touch functions includes a keyswitch, a backlight module having a light source and a light guide plate, a membrane, a capacitive touch sensing sheet disposed on the membrane and the light guide plate, and a board. The keyswitch includes a cap and a support mechanism movably connected to the cap. Light of the light source is incident into the light guide plate and is emitted toward the cap. The membrane has a switch and is selectively disposed on or under the backlight module. The board is disposed under the backlight module and the membrane and has first and second connection members. The first and second connection members pass through the membrane, the light guide plate and the capacitive touch sensing sheet to be movably connected to the support mechanism, so as to make the cap movable downward relative to the board for triggering the switch.

Abstract: A key switch includes a base, a key cap, a supporting mechanism, a link bar and a buffer member. The key cap is disposed above the base. The supporting mechanism is connected to the key cap and the base to allow the key cap to move relative to the base upwardly and downwardly. The link bar includes a lower linking end. The buffer member and the base are two independent components. The buffer member is disposed on the base and made of material softer than material of the base. A restraining structure is formed on the buffer member. The lower linking end movably passes through the restraining structure. When the key cap moves relative to the base upwardly and downwardly, the lower linking end is driven to move within the restraining structure correspondingly, so as to reduce noise during movement of the lower linking end relative to the base.

Abstract: A key switch includes a base, a key cap, a supporting mechanism, a link bar and a buffer member. The key cap is disposed above the base. The supporting mechanism is connected to the key cap and the base to allow the key cap to move relative to the base upwardly and downwardly. The link bar includes a lower linking end. The buffer member and the base are two independent components. The buffer member is disposed on the base and made of material softer than material of the base. A restraining structure is formed on the buffer member. The lower linking end movably passes through the restraining structure. When the key cap moves relative to the base upwardly and downwardly, the lower linking end is driven to move within the restraining structure correspondingly, so as to reduce noise during movement of the lower linking end relative to the base.

Abstract: A key switch includes a base, a key cap, a link bar and a buffer member. A first hook of a first extending arm of the base and a second hook of a second extending arm of the base extend toward opposite directions respectively. An upper linking end of the link bar is movably connected to the key cap. The buffer member is made of material softer than material of the base. When the first hook and the second hook engage with a first engaging portion and a second engaging portion of the buffer member respectively, a recess structure of the buffer member is adjacent to the base to form a restraining structure. A lower linking end of the link bar is movably disposed through the restraining structure. Therefore, the key switch of the present invention has noise reduction capability.

Abstract: A key switch includes a base, a key cap, a link bar and a buffer member. A first hook of a first extending arm of the base and a second hook of a second extending arm of the base extend toward opposite directions respectively. An upper linking end of the link bar is movably connected to the key cap. The buffer member is made of material softer than material of the base. When the first hook and the second hook engage with a first engaging portion and a second engaging portion of the buffer member respectively, a recess structure of the buffer member is adjacent to the base to form a restraining structure. A lower linking end of the link bar is movably disposed through the restraining structure. Therefore, the key switch of the present invention has noise reduction capability.

Abstract: A keyswitch includes a cap, a support structure, a first magnet, and a baseplate having a bending arm protruding from the baseplate and a support rib extending horizontally to form a receiving space with the bending arm. The support structure includes a first support member pivoted to the baseplate and against the cap and a magnetic permeable plate extending from the first support member and being above the receiving space. The first magnet is inserted into the receiving space to be supported by the support rib and be pressed by the bending arm. When the cap is pressed to make the magnetic permeable plate away from the first magnet as the first support member rotates, the cap moves to a pressed position. When the cap is released, a magnetic attraction force between the magnetic permeable plate and the first magnet drives the magnetic permeable plate to approach the first magnet.

Abstract: A keyswitch includes a cap, a support structure, a first magnet, and a baseplate having a bending arm protruding from the baseplate and a support rib extending horizontally to form a receiving space with the bending arm. The support structure includes a first support member pivoted to the baseplate and against the cap and a magnetic permeable plate extending from the first support member and being above the receiving space. The first magnet is inserted into the receiving space to be supported by the support rib and be pressed by the bending arm. When the cap is pressed to make the magnetic permeable plate away from the first magnet as the first support member rotates, the cap moves to a pressed position. When the cap is released, a magnetic attraction force between the magnetic permeable plate and the first magnet drives the magnetic permeable plate to approach the first magnet.

Abstract: An illuminant keyboard and a method thereof are provided. A plurality of protruding walls substantially parallel to each other are disposed on one of an upper surface of the transparent plate, a lower surface of the transparent plate and an upper surface of the planar light source. The protruding walls may be either I-shaped, L-shaped, U-shaped or square-shaped. When the protruding walls are made of an opaque material, the protruding walls can effectively reduce the intensity of the halo light surrounding a transparent keycap. When the protruding walls are made of a transparent material with a designated color, the halo light surrounding the keycap will be modulated with the designated color.

Abstract: A backlit keyboard includes a baseplate, a light guide plate, a light source, a reflective layer, and a light mask layer. The light mask layer is disposed between the baseplate and the light guide plate. The edge of the light mask layer forms a U-shaped reflective concave pointing downward and extending around the lateral surface of the light guide plate, and a portion of the lateral surface horizontally projects on the U-shaped reflective concave, thus allowing the U-shaped reflective concave to reflect lights leaving the lateral surface of the light guide plate back to the light guide plate. A backlight module for providing backlights to the backlit keyboard and an assembly method of the backlight module are also provided.

Abstract: The present invention is a wireless communications circuit protection structure, in which a microstrip structure is improved and a combined structure of the microstrip structure and the coplanar waveguide (CPW) structure are improved, so that an external ground and an internal system ground may be totally separated with each other to provide electromagnetic susceptibility (EMS), electrostatic discharge (ESD), electricity leakage proofing ability, and a loss within a specific wireless communications frequency range may satisfy the wireless communications ability requirement.

Abstract: An illuminant keyboard and a method thereof are provided. A plurality of protruding walls substantially parallel to each other are disposed on one of an upper surface of the transparent plate, a lower surface of the transparent plate and an upper surface of the planar light source. The protruding walls may be either I-shaped, L-shaped, U-shaped or square-shaped. When the protruding walls are made of an opaque material, the protruding walls can effectively reduce the intensity of the halo light surrounding a transparent keycap. When the protruding walls are made of a transparent material with a designated color, the halo light surrounding the keycap will be modulated with the designated color.

Abstract: The present invention is a wireless communications circuit protection structure, in which a microstrip structure is improved and a combined structure of the microstrip structure and the coplanar waveguide (CPW) structure are improved, so that an external ground and an internal system ground may be totally separated with each other to provide electromagnetic susceptibility (EMS), electrostatic discharge (ESD), electricity leakage proofing ability, and a loss within a specific wireless communications frequency range may satisfy the wireless communications ability requirement.

Abstract: A keyswitch includes a cap, a support structure, a first magnet, and a baseplate having a bending arm protruding from the baseplate and a support rib extending horizontally to form a receiving space with the bending arm. The support structure includes a first support member pivoted to the baseplate and against the cap and a magnetic permeable plate extending from the first support member and being above the receiving space. The first magnet is inserted into the receiving space to be supported by the support rib and be pressed by the bending arm. When the cap is pressed to make the magnetic permeable plate away from the first magnet as the first support member rotates, the cap moves to a pressed position. When the cap is released, a magnetic attraction force between the magnetic permeable plate and the first magnet drives the magnetic permeable plate to approach the first magnet.