Patents by Inventor Samir S. Pathak

Samir S. Pathak 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).

  • System and method for preventing proper execution of an application program in an unauthorized processor
    Patent number: 9117060
    Abstract: A system and method for preventing an application program, which is licensed to a customer to be exclusively executed in a processor based on a certain processor design, from being executed properly in unauthorized processors is provided. The system includes a scrambling module and a recovery module. The scrambling module scrambles a selected portion of the application program using an identifier which identifies the authorized processor design. The recovery module adds an unscrambling program to the application program such that when the program is running in a processor, it retrieves a second identifier from the processor and unscrambles the scrambled portion of the application program using the retrieved second identifier. If the second identifier does not correspond to an authorized processor design, the unscrambling operation will incorrectly unscramble the scrambled portion and the application program will not run properly.
    Type: Grant
    Filed: May 7, 2009
    Date of Patent: August 25, 2015
    Assignee: CADENCE DESIGN SYSTEMS, INC.
    Inventors: Darin S. Petkov, Dror E. Maydan, Pushkar G. Patwardhan, Sachin P. Ghanekar, Samir S. Pathak
  • System and Method for Preventing Proper Execution of an Application Program in an Unauthorized Processor
    Publication number: 20100287622
    Abstract: A system and method for preventing an application program, which is licensed to a customer to be exclusively executed in a processor based on a certain processor design, from being executed properly in unauthorized processors is provided. The system includes a scrambling module and a recovery module. The scrambling module scrambles a selected portion of the application program using an identifier which identifies the authorized processor design. The recovery module adds an unscrambling program to the application program such that when the program is running in a processor, it retrieves a second identifier from the processor and unscrambles the scrambled portion of the application program using the retrieved second identifier. If the second identifier does not correspond to an authorized processor design, the unscrambling operation will incorrectly unscramble the scrambled portion and the application program will not run properly.
    Type: Application
    Filed: May 7, 2009
    Publication date: November 11, 2010
    Inventors: Darin S. Petkov, Dror E. Maydan, Pushkar G. Patwardhan, Sachin P. Ghanekar, Samir S. Pathak