Resources Contact Us Home
System and method for optical medium region protection

Image Number 3 for United States Patent #7805753.

Restrictions on optical drive code changes, such as a predetermined number of region code changes for playing optical media with varying region codes, are enforced with an application solution. Each request to perform a region code change is authorized by retrieving a certificate to verify that a code change is permitted, decrementing the number of remaining authorized code changes reflected by the certificate, and storing the updated certificate for use at a subsequent code change request. The certificate is generated by application of one or more unique identifiers and encrypted during storage for security.

  Recently Added Patents
Tandem electric machine arrangement
Pet cremation urn
Gyroscope utilizing torsional springs and optical sensing
Apparatus and method for recording reboot reason of equipment
Method and structure for image local contrast enhancement
Sense-amplifier monotizer
System and method for optimizing use of plug-in air conditioners and portable heaters
  Randomly Featured Patents
Paper structures having at least three regions including a transition region interconnecting relatively thinner regions disposed at different elevations, and apparatus and process for making t
Apparatus for loading and re-slicing semiconductor wafer
Ultra-high density connector
Electron beam exposure system capable of detecting failure of exposure
Shelving with numbered orifices for simplified erection
Methods and systems for computer aided design of 3D integrated circuits
Wide angle area-of-interest visual image projection system
Contact print methods
Balloon loaded dissecting instruments
Power cord strain relief tether handle