Bruce J Rogers

Title: Bruce J Rogers: Innovator in Video Clock Technology

Introduction

Bruce J Rogers is a notable inventor based in Collegeville, PA (US), recognized for his contributions to the field of video clock technology. He holds 2 patents that showcase his innovative approach to electronic design and signal processing.

Latest Patents

One of his latest inventions is the Video Dot Clock Generator. This device includes a phase-locked loop (PLL) that features a voltage-controlled oscillator, a frequency divider, a phase comparator, and a loop filter. The voltage-controlled oscillator (VCO) is programmable, allowing it to provide multiple frequency ranges based on the control voltages applied. This programming influences both the frequency range and the gain of the VCO. The phase comparator is designed to simulate a predetermined minimum phase error, which, when compensated, significantly reduces jitter in the dot clock signal. Additionally, the frequency divider used in the PLL is programmable via internal memory, which also stores control signals for the VCO, enabling users to achieve desired frequency characteristics for specific applications.

Another significant patent is the Phase Locked Oscillator. This invention comprises a phase comparator, filter, and voltage-controlled oscillator, which are conventionally coupled to form the forward path of the phase-locked loop. An input pulse stream is applied to a monostable flip-flop, which generates a pulse of predetermined length in response to each input pulse. The counter receives the oscillator output pulses and counts them repetitively to a predetermined count. The logic circuit generates and terminates a reference pulse based on the counts, which is then applied to the phase comparator. This setup provides an output signal that indicates the time displacement between each input pulse and its associated reference pulse, allowing the oscillator to operate at a harmonic frequency of the input pulse stream.

Career Highlights

Throughout his career, Bruce J Rogers has worked with several prominent companies, including Integrated Circuit Systems, Inc. and Sperry Rand Corporation. His experience in these organizations has contributed to his expertise in electronic design and innovation.

Collaborations

Bruce has collaborated with notable individuals in the field, including Jere W Hohmann and Stephen A Ransom. These partnerships have likely enriched his work and led to advancements in his inventions.

Conclusion

Bruce J Rogers is a distinguished inventor whose work in video clock technology has made a significant impact in the field.