This inventor holds 2 USPTO granted patents. Top assignee: International Business Machines Corporation. Active years: 1986-1993.
Location History:
- Bahama, NC (US) (1986)
- Durham, NC (US) (1993)
Company Filing History:
Years Active: 1986-1993
Title: Larry A. Blue: Innovator in Touch Technology and Motor Drive Circuits
Introduction
Larry A. Blue is a notable inventor based in Durham, NC (US), recognized for his contributions to touch technology and motor drive circuits. With a total of 2 patents, he has made significant advancements in the field, particularly through his innovative approaches to optical touch panels and motor control systems.
Latest Patents
One of Larry's latest patents is for a "Laser touch panel reflective surface aberration cancelling." This invention provides a method and apparatus that distinguishes a valid touch from optical aberrations caused by unwanted objects or scratches on the light plane of an optical touch panel device. During a training mode, the device learns the relative position of 'aberration dropouts' caused by these unwanted objects. In normal operating mode, it compares the relative positions of 'touch and aberration dropouts' to effectively differentiate between the two signals. This allows for precise touch location determination while discarding irrelevant aberration signals.
Another significant patent is the "Current controlled motor drive circuit." This invention utilizes a switching regulator to intermittently chop a supply voltage, providing energy pulses to a lowpass filter circuit. The circuit includes a capacitor charged by these energy pulses, which drives a low voltage stepper motor. The duty cycle of the energy pulses is correlated with the average current in the motor coil, allowing for high torque during startup and automatic adjustments to meet the motor's running requirements.
Career Highlights
Larry A. Blue is currently employed at International Business Machines Corporation (IBM), where he continues to innovate and contribute to the field of technology. His work has had a lasting impact on the development of touch panel technology and motor control systems.
Collaborations
Throughout his career, Larry has collaborated with notable colleagues, including Alexander G. MacInnis and Jose F. Gonzalez-Heres. These collaborations have further enriched his work and contributed to the advancements in their respective fields.
Conclusion
Larry A. Blue stands out as an influential inventor whose work in touch technology and motor drive circuits has paved the way for future innovations. His patents reflect a deep understanding of technology and a commitment to enhancing user experience through effective solutions.