Pitney Bowes Inc.

Luu T Pham

Thomas J Foth

Jeffrey D Pierce

George M Macdonald

G Jonathan Wolfman

Yanqing Li

Mark E Sasso

Systems and methods for providing a simultaneous voice and data user interface for secure catalog orders and in particular for providing a system and method for providing a distributed voice user interface for a remote device having a limited visual user interface simultaneously with a data stream for facilitating secure automated catalog orders for simultaneous electronic fulfillment applied to that device are described.

Simultaneous voice and data systems for secure catalog orders

A method of controlling a microstepping motor is disclosed. Logic circuitry is initialized by a microcontroller. A logic sequence to determine a motor use profile, a system profile, and a program flow is performed, followed by a step sequence to establish the timing pattern of electrical impulses to be directed to an integrated circuit. A predetermined acceleration table is then accessed to implement acceleration. The logic circuit returns a delay constant from the acceleration table and places a set of data relative to the delay constant in one or more registers. A timing sequence is delivered to the integrated circuit that includes a set of interrupt service routines corresponding to a state of the motion profile. Each one of the interrupt service routines reloads a timer with a next delay constant and sends the next delay constant to the integrated circuit before updating the step count.

1/8th and 1/16th micro-stepping motor drive software architecture

The invention is a low-cost stepper motor drive system comprising a microstepping motor and a logic circuit. The logic circuit includes two integrated circuits for controlling one or more phases of the microstepping motor. Each one of the integrated circuits is a motor driver capable of producing up to sixteen microsteps per full step. Further, each one of the integrated circuits takes a set of analog/digital bits and a phase bit as input. Additionally, within the logic circuit, there is included a microcontroller for controlling the microstepping motor. The microcontroller comprises six control bits, which direct the controller in outputting a set of step sequences to the integrated circuits. The microcontroller can run in one of two program modes: a stand-alone mode which utilizes two profile bits to select one of a set of four slew velocities and which will accelerate the microstepping motor then slew at a preprogrammed velocity as selected by the two profile bits; and, a pulse controlled mode, wherein the motor velocity of the microstepping motor is directly related to an input pulse signal wherein each time the microcontroller receives the input pulse signal the microcontroller will output a step to the integrated circuits. The logic circuit further includes a driver circuit for driving current through each one of the motor phases, and two snubber circuits operatively located between the outputs of each one of the motor phases of each integrated circuit for stabilizing the voltage level of the logic circuit.

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Trumbull, CT, United States of America

Luu T Pham