Coded data generation or conversion – Bodily actuated code generator
Reexamination Certificate
2005-03-08
2005-03-08
Wong, Albert K. (Department: 2635)
Coded data generation or conversion
Bodily actuated code generator
C324S207180, C324S207170, C318S657000, C340S870360
Reexamination Certificate
active
06864808
ABSTRACT:
Analog circuitry is disclosed for conditioning a signal from linear and rotary variable differential transformers having a primary winding, a pair of secondary windings and a movable core. The circuitry includes a unique closed loop negative feedback mechanism which, over time, adjusts the frequency of a voltage controlled oscillator so that a steady-state condition is achieved within the circuitry, whereby the total integrated value of the secondary winding voltages at an integrator remains equal to a reference voltage, thereby reducing the computational burden associated with solving an equation to determine the position of the movable core of the transformer.
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European Search Report dated May 30, 2003.
Edwards & Angell LLP
Goodrich Pump & Engine Control Systems, Inc.
Silvia David J.
Wong Albert K.
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