Abstract: A method, a master short range accessory, and an ad-hoc personal area network device for pairing with multiple slave communication devices are disclosed. An audio user interface 310 may interact with a user. A primary device interface component 372 may create a primary audio connection with a primary mobile communication device 502 to facilitate a primary telephone conversation session with a primary communication partner 512. A secondary device interface component 372 may create a secondary audio connection with the secondary mobile communication device 504 to facilitate a secondary telephone conversation session with a secondary communication partner 532 while maintaining the primary audio connection. A processor 330 may send an audio hold indication to the primary communication partner 512 and mutes the primary audio connection.

Abstract: A method, a master short range accessory, and an ad-hoc personal area network device for pairing with multiple slave communication devices are disclosed. An audio user interface 310 may interact with a user. A primary device interface component 372 may create a primary audio connection with a primary mobile communication device 502 to facilitate a primary telephone conversation session with a primary communication partner 512. A secondary device interface component 372 may create a secondary audio connection with the secondary mobile communication device 504 to facilitate a secondary telephone conversation session with a secondary communication partner 532 while maintaining the primary audio connection. A processor 330 may send an audio hold indication to the primary communication partner 512 and mutes the primary audio connection.

Abstract: A charging circuit is provided for coupling a power source to a plurality of loads. The circuit includes a controller that continually senses the output voltage of the power source. The controller may also decouple the power source from the loads to measure the open circuit voltage of the power source. Once the open circuit voltage is known, the controller establishes a threshold voltage that is slightly below the open circuit voltage of the power supply. The controller then begins delivering current to one of the loads by way of a current regulator. Whenever the power source voltage is below the threshold voltage, the controller reduces the current flowing through the current regulator. When the power source voltage is above the threshold voltage, the controller increases the current flowing through the current regulator. In so doing, the charging circuit simultaneously charges both loads, thereby reducing overall charge time.

Abstract: This invention includes a method for sensing the parasitic impedance in a battery charging system and compensating for these parasitic impedances. In one embodiment, the voltage of the system is measured with no charging current applied. Next, a charging current is applied and a second voltage is measured. The parasitic impedance is then extrapolated and multiplied by a predetermined rapid charging current. The product is added to a predetermined cell termination voltage. The charging means remains in a rapid charge current mode until a voltage equal to the sum of the impedance-current product and the predetermined voltage is reached, wherein the current is reduced to a maintenance charging level.