G - Physics – 11 – B
Patent
G - Physics
11
B
G11B 5/09 (2006.01) G11B 20/00 (2006.01) G11B 20/10 (2006.01) H04L 9/32 (2006.01)
Patent
CA 2313813
A method and a device for storing audio information in magnetic memory, an electronic arrangement for protecting the computing program and a method of protection against non-authorized duplications is presented. The device of the invention allows, by means of an entrance signal, preferably a bar code reader, to select the information and the content of a product, preferably a CD of commercial music, that is stored in a magnetic memory in digital form. The audio information, preferably music, is converted into computing formatted information by means of a well-known software and is stored compressed with a high compression ratio. The original audio parameters that are lost during the compression are stored in a complementary memory and are outputted simultaneously, and therefore the audible signal that reaches the user through earphones and/or loudspeakers recovers its high quality sound, reproducing the file with no need for decompressing it. The method also offers technical control checking for the device and statistics logging based on the playback requests carried out by the users. The integrity of software and the authenticity of the device are protected by means of an anti-copy system that is based on a microprocessor based security card.
Dcs Desarrollos Tecnologicos S.a.
Riches Mckenzie & Herbert Llp
LandOfFree
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