Cryptography – Particular algorithmic function encoding – Nbs/des algorithm
Patent
1992-04-23
1994-03-22
Cangialosi, Salvatore
Cryptography
Particular algorithmic function encoding
Nbs/des algorithm
380 25, H04K 100
Patent
active
052972054
DESCRIPTION:
BRIEF SUMMARY
The invention relates to a portable electronic device allowing the implementation of operations essentially intended to establish customer or public loyalty to a medium, a service, a product, or other things.
Commercial or similar operations intending to establish customer or public loyalty by allocation of winnings (prize in kind or in cash, price reduction on a product or a service, etc . . . ) as a reward for that loyalty are extremely widespread. These operations can assume the most various forms and their methods are generally specific to each operation. Because of this they are costly, limited in time, relatively inappropriate to a system involving several partners and their impact cannot always be measured accurately.
The problem of establishing public loyalty is particularly crucial in the field of the press, radio, television and other media for which a significant proportion of their resources arises from publicity, sponsorship or similar.
The purpose of the invention is to provide a portable electronic device which offers new possibilities for the use of operations to establish customer or public loyalty involving the use by the customers or the public of renewable information which is made available to them on suitable information media (press, radio, television, various placarding, etc . . . )
For this purpose, the subject of the invention is a portable electronic device for validating the participation of an individual in at least one operation using a medium involving the use by the said individual of at least one encoded item of information supplied by at least one medium characterised in that it comprises:
at least one input interface to allow the entering of the said encoded information into the device by the individual,
at least one memory which is inaccessible from the said input interface
means of processing the said information comprising: information, numerical values previously stored in the memory, the said decoded information, the said means being adapted to prohibit the validation of the said participation if the said variable numerical value coincides with one of the said previously stored variable numerical values, otherwise to validate the said participation and to store the said decoded variable numerical value in the memory, variable numerical values,
an output interface to transmit to the exterior of the device an output code representative of participation validated by the means of processing, and
an electrical power supply source for the various electronic circuits of the device.
Preferably, the said decoded information comprises a dating datum and the said means of processing are adapted not to take account of the said participation when the said dating datum is representative of a date prior to a reference date contained in the device and to delete from the said memory, at each change of the said reference date, the said information representative of previously stored variable numerical values.
According to a first embodiment of the invention, the said reference date is constituted by the most recent dating datum associated with a previously stored numerical value and the validation means are adapted to validate the said participation if the decoded dating datum is identical to or later than the said reference date.
Preferably, the said numerical value is an order number and the said means of processing are adapted to validate the said participation if, in the case of an identical date, the decoded order number and the last order number stored comply with an order relationship stored in the device.
Thus the users will only be able to enter information into their device in the chronological order desired by the distributor of that information. Preferably, provision is made that, for a given period (date), the users can only be rewarded for their participation if they carry out the necessary procedure within a predetermined period. In order to do this, the means of processing are programmed to transmit an output code which is representative only of participations which ar
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Audebert Yves
Delahaye Achille
Adventure
Cangialosi Salvatore
LandOfFree
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