Abstract: A preferred contact group centric interface for a communication device can be used to facilitate communications by a user. The user interface can be arranged to activate from a user's “home page” on the display, from an idle screen that is accessed after a timeout period expires, or any other appropriate mechanism that activates the preferred contact group centric experience. A user selects the preferred contact group from among an array of the user's contacts. Once the contact group is configured, a minimal number of navigation/selection features is necessary to activate any number of communication modes available to the contacts. The contact group is configured such that simple and quick navigation between the contact members is achieved. The contact group can be presented in 2D and 3D arrangements, in any number of list or geometric configurations. A pricing plan can optionally be tied to each member of the contact group.

Abstract: A preferred contact group centric interface for a communication device can be used to facilitate communications by a user. The user interface can be arranged to activate from a user's “home page” on the display, from an idle screen that is accessed after a timeout period expires, or any other appropriate mechanism that activates the preferred contact group centric experience. A user selects the preferred contact group from among an array of the user's contacts. Once the contact group is configured, a minimal number of navigation/selection features is necessary to activate any number of communication modes available to the contacts. The contact group is configured such that simple and quick navigation between the contact members is achieved. The contact group can be presented in 2D and 3D arrangements, in any number of list or geometric configurations. A pricing plan can optionally be tied to each member of the contact group.

Abstract: A hybrid power supply apparatus with fuel cell output control comprises: a first power supply circuit and a second power supply circuit, the first power supply circuit consisting of a first power unit, a first voltage conversion unit, a sensor unit, and a control unit, wherein the voltage conversion unit is connected to the power unit, and contains a DC voltage booster circuit or a DC voltage buck circuit to convert the DC power generated by the power unit into DC power of specific voltage for output; the sensor unit being able to detect the voltage or the current of DC power output by the first power unit that enables the control unit to control the DC power conversion ratio of the first voltage conversion unit or stop the DC power conversion by the first voltage conversion unit based on the electric signal fed from the sensor unit, thereby protecting the first power unit.

Abstract: A fuel cell hybrid power supply apparatus comprises a fuel cell power supply circuit and a secondary battery power supply circuit. Wherein a charger unit of the secondary battery power supply circuit determines the power characteristics for the recharging of a secondary battery unit of the secondary battery power supply circuit, based on the electrical signal outputted by a sensor unit of the fuel cell power supply circuit; the sensor unit regulates the predetermined voltage levels separately at output terminal of the fuel cell power supply circuit and the secondary battery power supply circuit with a differential between said voltage levels based on the power transmitted by the fuel cell power supply circuit, and controls the recharging of the secondary battery unit by the charger unit; and a fuel cell unit of the fuel cell power supply circuit outputs power at a predetermined constant work rate.

Abstract: A fuel cell apparatus with charge circuit comprises a fuel cell, a power output circuit and a charge circuit. The power output circuit transmits the power outputted by the fuel cell and further comprises a sensor unit for detecting the power characteristics outputted by the power output circuit and outputs corresponding electrical signals. The charge circuit transmits power outputted by the fuel cell and comprises a secondary cell and a charging unit. The charging unit controls the charge circuit to perform the charging operation of the secondary cell, wherein the power output circuit is electrically connected in parallel with the charge circuit, while the fuel cell is electrically connected in series with the power output circuit. The charging unit performs the charging control of the charge circuit to the secondary cell according to electrical signals outputted by the sensor unit.

Abstract: The present invention relates to a current-limiting voltage conversion device, comprising a voltage conversion unit, a voltage signal unit, a sensor unit and a DC power loop. The voltage conversion unit and the sensor unit are electrically connected in series in the DC power loop. The voltage signal unit outputs a corresponding voltage signal to the voltage conversion unit based on the electric signal output by the sensor unit, and the voltage conversion unit controls the voltage conversion of the voltage conversion unit based on said voltage signal.

Abstract: A power supply device with voltage converter circuit comprises a power supply device, a boost loop, a buck loop, and a control unit. The power supply device supplies power by any means. The boost loop is used to step up the voltage of power output by the power supply device. The buck loop is used to step down the voltage of power output by the power supply device. The boost loop and the buck loop are electrically connected in parallel. The control unit selects the use of boost loop or buck loop for the voltage conversion of the power supply device. The control unit monitors the power output of the power supply device and controls the action of the boost loop or the buck loop such that the power supply device would output voltage desired by the system via voltage conversion.

Abstract: A portable multimedia projection device is provided for showing the multimedia information for a plurality of audiences and promoting the sharing quality of the multimedia information. The portable multimedia projection device includes a data storage unit, an image projecting unit, a control circuit, and an independent power. The data storage unit is disposed to store a multimedia data, the image projecting unit is electrically connected to the data storage unit, and disposed to project the multimedia data, the control circuit is electrically connected to the data storage unit and the image projecting unit and disposed to control the operating, transmitting, and broadcasting of the multimedia data, and the independent power is disposed to provide the electric power the portable multimedia projection device needs to operate.

Abstract: The present invention relates to a fuel cell device applied in an electronic device. The electronic device has a power supply unit to supply power to it. The fuel cell device comprises a fuel cell, a regulator unit, a microprocessor unit an auxiliary unit and a power loop device. The regulator unit converts the DC voltage of power output by the fuel cell. The microprocessor unit controls the operation of the fuel cell device and carries out computing needed for its operation. The auxiliary unit supports the operation of the fuel cell. The power loop device selects the power output by the fuel cell device to the electronic device, or power input from the electronic device to the fuel cell device.

Abstract: The present invention relates to a fuel cell system having activation assist apparatus and method, wherein the method aims to provide an effective operating method for activating the fluid drawing device in the fuel cell system through external force. The external force acts to activate the fluid drawing device without going through the internal fuel cell. Another object of the activation method is to control the activation of fluid drawing device through an internal chargeable cell and a micro control unit. The activation method further detects and analyzes the status of fuel in the fuel cell through the micro control unit to determine whether to activate the fluid drawing device. In case the chargeable cell is unable to activate the micro control unit or fluid drawing device, it can be recharged and then activate the micro control unit or the fluid drawing device.

Abstract: A preferred contact group centric interface for a communication device can be used to facilitate communications by a user. The user interface can be arranged to activate from a user's “home page” on the display, from an idle screen that is accessed after a timeout period expires, or any other appropriate mechanism that activates the preferred contact group centric experience. A user selects the preferred contact group from among an array of the user's contacts. Once the contact group is configured, a minimal number of navigation/selection features is necessary to activate any number of communication modes available to the contacts. The contact group is configured such that simple and quick navigation between the contact members is achieved. The contact group can be presented in 2D and 3D arrangements, in any number of list or geometric configurations. A pricing plan can optionally be tied to each member of the contact group.