Patent ID: 6751336
Filing Date: 2004-06-15
Classification: G06F,G06T,G07D,H04N

Abstract:
Apparatus for determining authenticity of an analog form that includes semantic information and an embedded first message that is produced from the semantic information, the apparatus comprising:a processor connected via a network to a source of a digital representation that is made by digitizing the analog form, the processor including a first reader that is capable of extracting the embedded first message from the digital representation and a second reader that is capable of reading the semantic information from the digital representation, the processor responding when the digital representation is received from the source by using the first reader to extract the first message, using the second reader to read the semantic information, producing a second message from the read semantic information, comparing the second message with the read first message to determine authenticity of the analog form, and providing an indication of authenticity to the source.