Patent ID: 7536574

Claim:
A wireless computer peripheral device, comprising: a first power and a second power; a first power detecting unit with a set first threshold value, coupled to said first power and; and a second power detecting unit with a set second threshold value, coupled to said first power, second power and said first power detecting unit; wherein said first power detecting unit and said second power detecting unit are configured so that: power energy supplied from said second power will be cutoff and said power energy supplied from said first power will be provided to said wireless computer peripheral device for using when the power energy stored in said first power is higher than the power energy stored in said second power; and said power energy supplied from said first power will be cut off and said power energy supplied from said second power will be provided to said wireless computer peripheral device for using when the power energy stored in said first power is lower than or equal to said power energy stored in said second power, wherein said first power is an optical energy storing device and said second power is a battery, wherein said optical energy storing device further comprises: a solar plate, disposed outside said wireless computer peripheral device for absorbing solar and converting it into power energy; and an energy storing device, coupled to said solar plate, for storing said power energy output by said solar plate.