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
Lightning-protective explosion-preventive fastener
Stereoscopic editing for video production, post-production and display adaptation
Wireless communication system using pilot allocation, method and pilot pattern thereof
Measuring device and measuring method that use pulsed electromagnetic wave
System and method for predicting remaining useful life of device components
Non-aqueous solution process for the preparation of cross-linked polymers
  Randomly Featured Patents
Optical navigation device, and method for manufacturing same
Airplane seat track
Speculum protector with smoke tube
Treatment of pain
Method and apparatus for increasing disc drive performance
Disc-record player comprising a disc-loading mechanism
Muddy and waste water treatment device and method
Infrared-transparent black liquid toner
Fault prediction framework using temporal data mining
Personalized internet content server system