Company Filing History:
Years Active: 1993-1995
Title: Innovations by Allen J Piepho
Introduction
Allen J Piepho is a notable inventor based in Ft. Collins, CO (US). He has made significant contributions to the field of data storage technology, holding two patents that showcase his innovative approach to managing data on magneto-optical disks.
Latest Patents
His latest patents include a "Method for using one of two storage directories only after the other." This invention discloses a system that stores write management information, identifying which sectors have been written and which are available for writing in a magneto-optical disk with write-once-read-many (WORM) capability. The write management information is stored in a separate directory on the media, which is loaded into the drive controller memory when the media is first loaded. The drive checks the write management directory upon receiving a write command to determine if the sector has already been written. If the sector has been written, the drive returns an error; otherwise, it writes the sector and updates the directory.
Another significant patent is the "Method and apparatus for determining sector status in a data storage." This invention allows writable magneto-optic data storage media to be defined as read-only. Each sector of the media contains an error recovery section known as the defect management pointer (DMP). The DMP indicates whether the sector is writable or read-only, using a special data pattern to signify the state of the sector. Once a sector is changed to read-only, the drive will not allow further writing to that sector, ensuring data security.
Career Highlights
Allen J Piepho is currently associated with Hewlett-Packard Company, where he continues to innovate in the field of data storage solutions. His work has significantly impacted how data is managed and secured in various applications.
Collaborations
He has collaborated with notable coworkers such as Kevin S Saldanha and Alfred Natrasevschi, contributing to advancements in technology through teamwork and shared expertise.
Conclusion
Allen J Piepho's contributions to data storage technology through his patents reflect his innovative spirit and dedication to improving data management systems. His work continues to influence the industry and enhance data security measures.