Company Filing History:
Years Active: 1998-2014
Title: Jack Chris Randolph: Innovator in Digital Data Processing
Introduction
Jack Chris Randolph is a notable inventor based in Rochester, MN (US). He has made significant contributions to the field of digital data processing, holding a total of 10 patents. His work focuses on enhancing the efficiency and performance of processors through innovative designs.
Latest Patents
One of Randolph's latest patents is for a digital data processing apparatus featuring a multi-level register file. This invention includes multiple levels of registers with varying access latencies. A smaller set of registers is housed in a faster higher-level register bank, while a larger, more comprehensive set is located in a slower lower-level register bank. The design ensures that the higher-level bank is positioned closer to the functional logic that receives inputs from the registers. Selection logic is implemented to choose the output from either register bank for input to the processor execution logic. The lower-level bank contains a complete set of all processor registers, while the higher-level bank includes a smaller subset, duplicating information from the lower level. The higher-level bank is designed to be accessible in a single clock cycle.
Another significant patent involves a method and cache control circuit for replacing cache lines using an alternate pseudo least-recently-used (PLRU) algorithm along with a victim cache coherency state. This invention provides a method and design structure for replacing a cache line when a requirement for replacement in a congruence class is identified. It calculates both a first and an alternate PLRU cache line for replacement. If the first PLRU cache line is in the victim cache coherency state, the alternate line is selected for use.
Career Highlights
Jack Chris Randolph is currently employed at International Business Machines Corporation (IBM), where he continues to innovate in the field of digital data processing. His work has had a significant impact on the efficiency of modern computing systems.
Collaborations
Randolph has collaborated with notable coworkers such as Frederick Jacob Ziegler and Mark Joseph Hickey, contributing to various projects and advancements in technology.
Conclusion
Jack Chris Randolph is a distinguished inventor whose work in digital data processing has led to multiple patents and significant advancements in the field. His innovative designs continue to influence the efficiency of processors in modern computing.