Patents by Inventor Ruben Marquez

Ruben Marquez has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20040179462
    Abstract: The invention pertains to an optical disc having increased storage capacity that provides sufficient signals for readability in a majority of players. Pursuant to a first aspect of the invention, acceptable cross-talk levels and increased storage capacity are achieved by decreasing track pitch and pit width. Pit width is decreased based in part on the amount the track pitch has been decreased, and in part on cross-talk levels that are produced by the optical disc when scanned in a majority of players. Pursuant to a second aspect of the invention, acceptable data signals, acceptable tracking signals, and increased storage capacity are achieved by decreasing the pit lengths and by selecting a pit depth. The pit depth is selected based in part on the pit lengths, and based in part on the data signals and the tracking signals produced by the optical disc when scanned in a majority of players.
    Type: Application
    Filed: March 10, 2003
    Publication date: September 16, 2004
    Applicant: NATIONAL FILM LABORATORIES, INC. dba CREST NATIONAL
    Inventors: Robert I. Freedman, Steven Rogers, Ruben Marquez