This inventor holds 2 USPTO granted patents. Top assignee: Bell Telephone Laboratories. Active years: 1976-1978.
Company Filing History:
Years Active: 1976-1978
Title: The Innovative Contributions of Edward Myron Prell
Introduction
Edward Myron Prell is a notable inventor based in St. Charles, IL, who has made significant contributions to the field of telecommunications. With a total of 2 patents, Prell's work has focused on enhancing the functionality and security of coin-operated telephones and semiconductor memory systems.
Latest Patents
One of Prell's latest inventions is the "Coin Telephone Antifraud System." This invention addresses the challenges associated with coin-operated telephones by preventing accidental or fraudulent simulation of coin deposit signals. At the beginning of each coin call or overtime period, a coding algorithm is randomly selected at the coin station. The identity of this algorithm is then transmitted over the telephone line to a receiving telephone office. For each coin deposited, the coin station generates accumulated coin deposit information, codes it according to the chosen algorithm, and transmits the coded information to the telephone office. The office decodes this information to ascertain the amount deposited at the coin station.
Another significant patent is the "Memory Diagnostic Arrangement." This diagnostic system is designed to detect malfunctions in the access circuitry used to control the reading, writing, and refreshing of semiconductor memory modules. Each module is equipped with a pair of access circuits, which control the accessing of predetermined bits of each word stored in that module. During read or write operations, the output signals from each access circuit are compared to ensure proper access to the memory elements. Additionally, during refresh operations, the outputs are matched to maintain the integrity of the refresh process.
Career Highlights
Edward Myron Prell has had a distinguished career at Bell Telephone Laboratories, where he has contributed to various innovative projects. His work has played a crucial role in advancing telecommunications technology, particularly in the realm of coin-operated systems and memory diagnostics.
Collaborations
Throughout his career, Prell has collaborated with notable colleagues, including Frank Valentine Beck and David Cartwright Peterson. These collaborations have further enriched his contributions to the field.
Conclusion
Edward Myron Prell's innovative patents and contributions to telecommunications demonstrate his commitment to enhancing technology and improving user experience. His work continues to influence the industry and showcases the importance of innovation in everyday devices.