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: 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: An optical disk drive with multiple optical pick-up heads is provided. The optical disk drive includes an upper cover, a base, a first carrier member, a second carrier member, a first limiting member, and a second limiting member. The base is disposed under the upper cover. The first carrier member disposed on the base and has a first optical pick-up head. The second carrier member is disposed on the upper cover and has a second optical pick-up head. The first limiting member is used for disposing the first end of the second carrier member on the upper cover. The second limiting member is used for disposing the second end of the second carrier member on the upper cover. The length of the first limiting member is larger than that of the second limiting member.