Patents by Inventor Richard Doherty

Richard Doherty 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).

  • Fashion Accessories and Entertainment Instruments with Personalized Appearances
    Publication number: 20110254225
    Abstract: Fashion accessories and entertainment instruments where accessory pieces can be rearranged instantly on a support. Exemplary embodiments include a game board that can be curled up and wrapped around a wrist.
    Type: Application
    Filed: October 6, 2009
    Publication date: October 20, 2011
    Inventors: Amanda Doherty, Richard Doherty
  • Media key-transformation obfuscation in advanced access content system
    Patent number: 8023653
    Abstract: A modified media key used to decrypt protected media content stored on an optical disc, such as an HD-DVD or Blu-ray disc, is created through application of a transformation using a constant value which is programmatically generated by procedural code that runs on a player. The transformation is obfuscated through application of a random value to the constant value through a logical XOR operation. The programmatically-generated constant, called Soft Key Conversion Data (“SKCD”) is used by a security layer to derive the modified media key, called a Soft Media Key. At the player, a conventionally calculated media key is used to decrypt the first title, while the Soft Media Key is used to decrypt subsequent titles. Optionally, the SKCD may be updated one or more times so that the Soft Media Key is repeatedly transformed and respectively applied, for example, on a title-by-title basis, or to groups of subsequent titles.
    Type: Grant
    Filed: October 9, 2007
    Date of Patent: September 20, 2011
    Assignee: Microsoft Corporation
    Inventors: Richard Doherty, Robert Hughes
  • Media key-transformation obfuscation in advanced access content system
    Publication number: 20090092249
    Abstract: A modified media key used to decrypt protected media content stored on an optical disc, such as an HD-DVD or Blu-ray disc, is created through application of a transformation using a constant value which is programmatically generated by procedural code that runs on a player. The transformation is obfuscated through application of a random value to the constant value through a logical XOR operation. The programmatically-generated constant, called Soft Key Conversion Data (“SKCD”) is used by a security layer to derive the modified media key, called a Soft Media Key. At the player, a conventionally calculated media key is used to decrypt the first title, while the Soft Media Key is used to decrypt subsequent titles. Optionally, the SKCD may be updated one or more times so that the Soft Media Key is repeatedly transformed and respectively applied, for example, on a title-by-title basis, or to groups of subsequent titles.
    Type: Application
    Filed: October 9, 2007
    Publication date: April 9, 2009
    Applicant: Microsoft Corporation
    Inventors: Richard Doherty, Robert Hughes