Patent ID: 6317500
Filing Date: 2001-11-13
Classification: H04N

Abstract:
A method for decrypting an encrypted signal, the method comprising the steps of:a) providing a module that includes a Satellite Positioning System location determination unit and that includes a decryption chip, said Satellite Positioning System location determination unit coupled to said decryption chip;b) storing, within said module, a collection of location coordinates that defines a selected region within which said decryption chip is to be enabled;c) determining location of said module using said Satellite Positioning System location determination unit;d) comparing said determined location to said collection of location coordinates for determining whether said determined location is within said selected region within which said decryption chip is to be enabled;e) receiving an external signal at said module that is encrypted; andf) decrypting said signal that is encrypted using said decryption chip when the comparison in step d) determines that said determined location is within said selected region within which said decryption chip is to be enabled.