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
Circuit arrangement for a piezo transformer, and method therefor
Sheet member and method of manufacturing sheet member
Composition comprising a mixture of dextro- and levo-amphetamines complexed with ion-exchange resin particles to form drug resin particles
High conductive water-based silver ink
Lightning-protective explosion-preventive fastener
Physiological measuring system comprising a garment in the form of a sleeve or glove and sensing apparatus incorporated in the garment
Stacked type semiconductor memory device and chip selection circuit
  Randomly Featured Patents
Epoxy-polyester, polycarbonate, metal phosphate and rubbery modifier
Programmable plate bending machine
Subterranean cavity chimney development for connecting solution mined cavities
Laminate bending device
Cosmetic or cosmetic product for firming and soothing the skin in particular in the case of cellulite
Wireless repeater with smart uplink
Low profile electrical connector
Propylene-based resin composition for pipe member and pipe member formed using the same
Cleaning liquid level regulator for dry cleaning machines
Centrally anchored aligning device for machines