Patent ID: 7590600
Filing Date: 2009-09-15
Classification: G06Q

Abstract:
1. A method for setting a lifetime of a license in a non-volatile memory device, without a battery, associated with a content, comprising: connecting to a host by the device operating a set of software on the device that can connect to a host; receiving by the device an encrypted content from the host; receiving by the device a license with a key; determining by the device an original unique lifespan that identifies a time of duration that ends when a charge retention in the member of an array of memory cells decays below a threshold; determining by the device a location in the non-volatile memory of the device that is associated with the member of the array of memory cells with an original unique lifespan; storing the key in the location of the non-volatile memory wherein a time limit in the license corresponds with the member in the array with the original unique lifespan; during the original unique lifespan, decrypting the content using the key determining by the device whether the original unique lifespan for the member has expired based on the charge retention in the member; and preventing an access to the content when the original unique lifespan for the member expires wherein the charge retention in the member has decayed below the threshold.