James R Mallabar

Title: Innovations of James R Mallabar

Introduction

James R Mallabar is a notable inventor based in Essex Junction, VT (US). He has made significant contributions to the field of digital signal processing and memory testing. With a total of 2 patents, his work has had a considerable impact on technology.

Latest Patents

One of his latest patents is the "Jitter Digitizer." This invention involves a circuit and method for digitizing jitter in high-speed digital signals. The circuit utilizes a comparator to receive a digital signal and supplies a clock signal to a counter. It determines the frequency of the digital signal and calculates its period, providing a linearized delay for jitter analysis. The output is a delayed digital signal based on this linearized delay, which is then supplied to a programmable unit comprising flip flops. The method counts transitions of the flip flops to generate a jitter histogram of the digital signal.

Another significant patent is related to a "Captured Synchronous DRAM Fails in a Working Environment." This invention is a memory test assembly that converts a standard PC or workstation into a memory tester. The assembly consists of a diagnostic card and an adapter card, designed to support memory bus speeds of 66 MHz and above. It allows for easy access for a logic analyzer and enables the comparison of good and questionable synchronous modules. The test assembly is programmable, allowing adjustments to varying bus timings and is designed with Field Programmable Gate Arrays (FPGAs) for internal changes without modifications.

Career Highlights

James R Mallabar is currently employed at International Business Machines Corporation (IBM). His work at IBM has allowed him to explore innovative solutions in the realm of digital signal processing and memory testing.

Collaborations

Throughout his career, he has collaborated with notable coworkers such as Brian John Connolly and Steven Alfred Grundon. These collaborations have contributed to the development of his innovative patents and advancements in technology.

Conclusion

James R Mallabar's contributions to the fields of digital signal processing and memory testing are noteworthy. His patents reflect a deep understanding of technology and innovation. His work continues to influence advancements in these areas.