Abstract: A computer system typically includes a central computer and several peripherals, such as a mouse and a printer, which communicate with the computer via a communications channel known as a serial bus. The serial bus may also supply a limited amount of power to some peripherals. Unfortunately, the power limit compels high-power peripherals to include independent power supplies, an arrangement which increase their complexity and cost. Accordingly, one embodiment of the present invention provides a bus-powered peripheral that includes a controller, a rechargeable battery, and a voltage regulator or recharge circuit. The recharge circuit monitors data on a serial bus, recharges the battery during inactive periods, and allows the battery to supplement bus power during active periods, thereby overcoming the power limit of the serial bus.

Abstract: A programmable cellular telephone activates selected functions based on a user modifiable schedule, The user stores schedule information in a schedule table for automatic function activation/deactivation. A controller controls all cellular telephone functions, and comprises a memory and a clock. The controller also comprises an automatic scheduler which activates and deactivates cellular telephone functions according to the entries in the schedule table. Cellular telephone functions are activated and deactivated either manually or when the automatic scheduler is enabled and the real time corresponds with the scheduled time in the schedule table. By using the scheduler, a user can select time periods when calls are receivable without having to remember to turn on the cellular phone, extending battery life and minimizing unwanted interruptions.

Abstract: Retractable speakers for use in a housing coupled to a computer, such as a portable computer or docking bar, which allow for sound quality optimization by being positionally adjustable relative to the computer housing. Retractable speaker locations relative to the computer housing include the top surface, side surfaces or front surface. Speakers are rotatable about a hinge relative to the housing surface, or emerge from the surface, such that the speaker is rotatable about an axis in order to direct the sound output toward a user. Alternatively, speakers disengage from the computer housing for placement on a surface in an optimum sound quality arrangement. Retracted speakers are substantially internal to the computer housing allowing for ease of transport and use in remote locations.