Patents by Inventor Alfred Palfreyman

Alfred Palfreyman 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).

  • Using black detection to improve video splicing
    Patent number: 8270488
    Abstract: In one embodiment, a network device analyzes an encoded video stream using black detection before splicing video into the encoded video stream. When black data is detected, the network device determines whether insertion of a black intra frame with the spliced video will improve viewing upon decoding. The network device may also determine whether a splicing boundary indication included in the encoded video stream is accurate based on an observed transition between the detected black data and other data, and compensate the video splice accordingly.
    Type: Grant
    Filed: October 15, 2007
    Date of Patent: September 18, 2012
    Assignee: Cisco Technology, Inc.
    Inventors: Glenn William Connery, Alfred Palfreyman