Communications: electrical – Continuously variable indicating – With meter reading
Patent
1996-04-17
1998-10-20
Horabik, Michael
Communications: electrical
Continuously variable indicating
With meter reading
455 311, 340572, H04Q 522, H04Q 700, G08B 1314
Patent
active
058252991
ABSTRACT:
An object identification system comprises a transceiver (1) and a transponder (30) including memories (33,34) for storing an identification code identifying the transponder. Circuits (35, 36, 37, 38) generate an identification signal representative of the identification code such that the identification signal is modulated by bits of the identification code. Circuits (8, 9, 10, 11, 12) of the transceiver receive and interpret the identification signal. The transponder includes a variable code generator (32) and a controller (31) for controlling the writing of the variable code into memory (33) so that the variable code constitutes part of the identification code. The variable code may be a random or pseudo-random code.
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Fritsch Hans Ulrich
Fuentes Vincent
Kraft Wolfgang
Merz Andreas
Plasberg Georg
Asongwed Anthony A.
EM Microelectronic-Marin SA
Horabik Michael
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