Company Filing History:
15 out of 9,638 
1 out of 832,680 Years Active: 1986-1999
Title: The Innovations of Richard A Baumgartner
Introduction
Richard A Baumgartner is a notable inventor based in Palo Alto, California. He holds a remarkable portfolio of 16 patents, showcasing his contributions to the field of technology and engineering. His work primarily focuses on advancements in photoreceiver technology, which has significant implications in various applications.
Latest Patents
One of his latest patents is titled "Offset removal circuitry for photoreceiver signals." This invention presents a method for transferring signals from a photoreceiver array to computational circuitry. It utilizes parallel transfer amplifiers that receive periodic offset correction. In this design, each transfer amplifier features a differential circuit that can switch between reset and readout modes. The readout mode allows the output voltage to respond to two inputs, while the reset mode connects both inputs to a reference voltage. An offset adjustment signal is generated based on the voltage difference detected between the reset voltage and the actual output voltage. This innovative approach employs a single offset circuit to refresh the various transfer amplifiers periodically and sequentially.
Another significant patent by Baumgartner is "Low differential light level photoreceptors." This invention provides circuitry and layout to maximize the photoreceiver area relative to the total area. It stabilizes the voltage at the base node of a phototransistor through a servo circuit that maintains a bias point via a negative feedback loop. This design ensures efficient delivery of photocurrent to charge transfer circuitry. The integration of various factors, including the design of the servo circuit and the use of a single transfer amplifier for an entire row of phototransistors, contributes to the high percentage of photoreceiver area.
Career Highlights
Throughout his career, Richard A Baumgartner has worked with prominent companies, including Hewlett-Packard Company. His experience in these organizations has allowed him to refine his skills and contribute to significant technological advancements.
Collaborations
Baumgartner has collaborated with notable individuals in the field, including Charles E Moore and John N Dukes. These partnerships have likely fostered innovation and the exchange of ideas, further enhancing his contributions to technology.
Conclusion
Richard A Baumgartner's work exemplifies the spirit of innovation in the field of photoreceiver technology. His patents reflect a deep understanding of electronic circuitry and its applications. His contributions continue to influence advancements in technology, making him a significant figure in the realm of inventions.
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