Abstract: Provided is a charge/discharge control circuit controllable by a control signal from a controller that is external. The charge/discharge control circuit includes a control circuit configured to, in response to a power-down control signal for transitioning to a power-down state being input from the controller, latch the power-down control signal and block a discharge path from a secondary cell (SC) to the controller.

Abstract: A device for forwardly and rearwardly adjusting the position of a safety headrest or pillow relative to the backrest of a vehicle seat, the headrest including a base member supported on the backrest and a frame member pivotally provided on the base member and covered by an outer cover for receiving and protecting the seat-occupant's head from shock to the vehicle. The device includes linkage pivotally interconnected between the base and frame member for permitting a link motion of the frame member relative to the base member in the forward and rearward directions, and a mechanism operable between the frame and base members for positioning and locking the frame member in a desired position on the path of the link motion thereof relative to the base member.