Abstract: A method for voice browsing an integrated voice response server is described. The method includes visually displaying a representation of a choice tree for a service, where the service includes an audio menu of available actions. A selection of an action displayed in the representation is received. The method also includes automatically navigating the audio menu in order to initiate the selected action. Apparatus and computer readable media are also described.

Abstract: A method for voice browsing an integrated voice response server is described. The method includes visually displaying a representation of a choice tree for a service, where the service includes an audio menu of available actions. A selection of an action displayed in the representation is received. The method also includes automatically navigating the audio menu in order to initiate the selected action. Apparatus and computer readable media are also described.

Abstract: A bias current supply circuit (20) is provided which includes an initial current source comprising a FET (22) coupled to a current mirror circuit comprising a pair of BJTs (26 and 28). An active resistive element comprising a second FET (24) is included to stabilize an output current I.sub.0 with respect to ambient temperature variations and process variations.

Abstract: A bias current supply circuit (20) is provided which includes an initial current source comprising a FET (22) coupled to a current mirror circuit comprising a pair of BJTs (26 and 28). An active resistive element comprising a second FET (24) is included to stabilize an output current I.sub.O with respect to ambient temperature variations and process variations.

Abstract: A differential amplifier having input and output stages includes a linear offset operation circuit comprising sources providing a reference voltage and an offset correction voltage and a pair of transistors coupled for linear operation and responsive to the voltages for supplying differential related offset correction currents to the amplifier output stage for reducing offset characteristic of the amplifier stages and for reducing output noise and offset attributable to a noise component of the reference voltage source.

Abstract: A direct AC to AC supply converter in which the control of the bidirectional switches connecting each conductor of a polyphase input supply to each conductor of an output supply is effected by a data processor, the operation of the program of which is synchronized by interrupt with the input supply. The data processor calculates for each output phase 2 values representing pulse widths out of a repeating sequence of 3 (for three phase input and output supplies) and pulse generators produce 3 abutting width modulated pulses in a constant period much shorter than the periods of the supplies. The interrupt operates a software phase locked loop. The pulse generators include an interlock circuit ensuring that the width modulated pulses do not overlap and an overload detector responsive to the turn-on times of the switches. A default logic circuit responsive to hardward or software failure makes the width modulated pulses of equal duration.