Ralph E Lovelace

Title: Ralph E Lovelace: Innovator in Photodetection Technology

Introduction

Ralph E Lovelace is a notable inventor based in Los Gatos, CA (US). He holds a total of 4 patents that showcase his contributions to the field of photodetection technology. His work has significantly impacted the way optical signals are processed and utilized in various applications.

Latest Patents

One of his latest patents is the "Integrated photodetector with moving destination circuit." This invention provides a highly accurate digital signal output in response to incoming optical pulses from an LED. The LED is optically coupled to a photodiode, which produces an input current in response to the optical output. The input current is amplified by a two-stage amplifier to produce an output voltage signal for switching an output transistor. An RC circuit is coupled between the first and second stage amplifiers to introduce a transient into the output voltage signal, reducing propagation delay and increasing the noise margin of the circuit.

Another significant patent is the "Optical isolation amplifier with sigma-delta modulation." This invention generates a low-noise analog output signal that is linearly related to an analog input signal and conveniently fits within a conventional 8-pin dual in-line package. The optical isolation amplifier package includes an input chip with a sigma-delta analog-to-digital (A/D) converter, which converts an analog input signal to a digital signal. The sigma-delta converter modulates an off-chip LED that optically transmits the signal to a photodetector on a separate output chip, which has an accurate optical recovery section for reproducing the transmitted signal. The output chip also contains a digital-to-analog (D/A) converter for converting the digital signal back to an analog output signal.

Career Highlights

Throughout his career, Ralph E Lovelace has worked with prominent companies such as Hewlett-Packard Company and Signetics. His experience in these organizations has allowed him to develop and refine his innovative ideas in photodetection technology.

Collaborations

Ralph has collaborated with notable individuals in the field, including David J Gampell and Michael D McJimsey. These collaborations have contributed to the advancement of his inventions and the overall progress in photodetection technology.

Conclusion

Ralph E Lovelace is a distinguished inventor whose work in photodetection technology has led