John W Reed

Title: Innovations of John W Reed

Introduction

John W Reed is a notable inventor based in Pine Island, MN (US). He has made significant contributions to technology, holding a total of four patents. His work primarily focuses on improving the efficiency and reliability of computer systems.

Latest Patents

One of his latest patents is the "Asynchronous channel error mechanism." This invention provides an apparatus for assembling information concerning the occurrence of a channel error. It forms a channel error event consisting of four fields: a channel function field, a field identifying the I/O register in use at the occurrence of the channel error, a field identifying the particular I/O adapter using the channel when the error occurred, and a field specifying the type of channel error. The four-field channel error event is placed in an I/O event stack accessible to the CPU, and the CPU is notified of the addition to the I/O event stack. If the attempt to store the channel error event on the I/O event stack fails, the channel is stopped until the CPU signals the channel to restart and to again attempt to log the channel error event on the I/O event stack.

Another significant patent is "Allocating and resolving next virtual pages for input/output." In a paged, virtual memory computer system, this apparatus enables I/O device adapters to request the CPU to allocate or resolve virtual pages into main storage pages as required for I/O data transfers. The I/O adapter provides the channel virtual address information specifying the requested page and channel function information, which indicates whether the requested page is to be transferred from secondary storage into main storage or merely allocated as a page in main storage. The channel forms the virtual address information and the channel function information into a page request function event, which is stored in an I/O event stack in main storage for retrieval and processing by the CPU.

Career Highlights

John W Reed has had a distinguished career at International Business Machines Corporation (IBM). His work has significantly impacted the field of computer technology, particularly in the areas of error handling and memory management.

Collaborations

Throughout his career, John has collaborated with notable coworkers, including David Otto Lewis and William E Hammer. Their combined expertise has contributed to the advancement of technology in their respective fields.

Conclusion

John W Reed's innovative patents and contributions to IBM highlight his importance as an inventor in the technology sector. His work continues to influence the