Patents by Inventor Mark R. Thompson

Mark R. Thompson 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: 20010049732
    Abstract: According to the invention, a content exchange apparatus for cacheing content objects is disclosed. Included in the content exchange apparatus are a content store, a content tracker, an origin server database, and a catalog of content objects. The content store includes a plurality of content objects. A determination is made by the content tracker determines as to which content objects are stored in the content store. The origin server database includes a list of origin servers associated with the content exchange. The catalog of content objects stored in the content store is maintained.
    Type: Application
    Filed: May 29, 2001
    Publication date: December 6, 2001
    Inventors: Nathan F. Raciborski, Mark R. Thompson
  • Patent number: 6305628
    Abstract: A reel-to-reel tape system stops movement of the tape during a power loss situation without overrun by one of the tape reels and without causing undue stress upon the tape itself. If rotational momentum of the supply reel is sensed to be disproportionately larger than the momentum of the take-up reel, supply motor back emf for dynamically braking the supply reel is applied while also driving the take-up reel in the direction of rotation in which it operated when the power source was discontinued. An appropriate amount of tension is maintained on the tape until the tape motion has come to a complete stop. A capacitor large enough to supply the power needed to provide current to the power bridge of the motor drivers is provided. The capacitor is charged upon power up of the drive and is not tapped unless and until the normal supply voltage of the motor drivers is turned off.
    Type: Grant
    Filed: November 15, 1999
    Date of Patent: October 23, 2001
    Assignee: Seagate Removable Storage Solutions LLC
    Inventors: Mark R. Thompson, Kempton W. Redhead