Abstract: A smart battery device includes an adapter, a switch electrically connected to the adapter, a battery pack electrically connected the switch, a sense resistor electrically connected to the battery pack and the adapter, an analog preprocessing circuit electrically connected to the battery pack and the sense resistor for digitizing analog signals measured at the battery pack and the sense resistor to form digital signals, and an adaptive control circuit electrically connected to the analog preprocessing circuit for receiving the digital signals, and electrically connected to the switch for selectively turning the switch on or off according to the digital signals.

Abstract: A smart battery device includes an adapter, a switch electrically connected to the adapter, a battery pack electrically connected the switch, a sense resistor electrically connected to the battery pack and the adapter, an analog preprocessing circuit electrically connected to the battery pack and the sense resistor for digitizing analog signals measured at the battery pack and the sense resistor to form digital signals, and an adaptive control circuit electrically connected to the analog preprocessing circuit for receiving the digital signals, and electrically connected to the switch for selectively turning the switch on or off according to the digital signals.

Abstract: Estimating remaining capacity and remaining time of a battery device during discharging of the battery device includes determining initial state of charge of the battery device, determining discharge current of the battery device, utilizing a shooting end of discharge process to determine final state of charge corresponding to the discharge current, and determining the remaining capacity and the remaining time according to the final state of charge.

Abstract: The present invention provides a non-volatile memory cell, comprising a tunnel dielectric layer disposed on the substrate, a barrier dielectric layer disposed over the tunnel dielectric layer, a graded charge trapping layer disposed between the tunnel dielectric layer and the barrier dielectric layer, a gate conductive layer disposed on the barrier dielectric layer and a source/drain region disposed in the substrate. The compositional ratio of the graded trapping layer gradually varies in different positions of the graded trapping layer.

Abstract: This invention relates to a wheel chair which is composed of a seat, a track device, a cushion device and an angle-regulate device so as to make the wheel chair can cross over the ditch or go up or down the stairs, when going up the stairs, user must lift the main wheels upwardly so as to make the track assembly contact the ground, then sliding the seat to the front slant part of the guide groove by its rollers, when the wheel chair going up to the last stairs, it can be returned to the horizontal position by means of the cushion device, when going down the stairs, user must slide the seat to the rear slant part of the guide groove, then going down the stairs by means of the track assembly, furthermore when the wheel chair crossing over the ditch, user must move first the seat to rear part of the wheel chair until the front part of the track assembly run over the ditch, then moving the seat to the front part so as to make the wheel chair cross over the ditch.