Patents by Inventor Tom Poslinski

Tom Poslinski 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).

  • Selective encryption to enable trick play
    Patent number: 7151833
    Abstract: Certain embodiments consistent with the present invention involve a method of selectively encrypting and decoding digital video content. Certain of the packets are selected for encryption according to a selection criterion, wherein the selected packets exclude packets containing start of frame (SOF) headers. The selected packets are encrypted while retaining the packets containing the SOF headers unencrypted to form selectively encrypted digital video content. In decoding selectively encrypted digital video content, offsets are calculated for at least one of I frames and P frames from the SOF headers and the calculated offsets are stored as an offset table. The offset table can then be accessed to enable trick play of the selectively encrypted digital video content.
    Type: Grant
    Filed: March 19, 2003
    Date of Patent: December 19, 2006
    Assignees: Sony Corporation, Sony Electronics Inc.
    Inventors: Brant L. Candelore, Tom Poslinski
  • Selective encryption to enable trick play
    Publication number: 20040049691
    Abstract: Certain embodiments consistent with the present invention involve a method of selectively encrypting and decoding digital video content. Certain of the packets are selected for encryption according to a selection criterion, wherein the selected packets exclude packets containing start of frame (SOF) headers. The selected packets are encrypted while retaining the packets containing the SOF headers unencrypted to form selectively encrypted digital video content. In decoding selectively encrypted digital video content, offsets are calculated for at least one of I frames and P frames from the SOF headers and the calculated offsets are stored as an offset table. The offset table can then be accessed to enable trick play of the selectively encrypted digital video content.
    Type: Application
    Filed: March 19, 2003
    Publication date: March 11, 2004
    Inventors: Brant L. Candelore, Tom Poslinski