Syringe-implantable identification transponder

Details Syringe-implantable identification transponder Syringe-implantable identification transponder

G - Physics

01

S

343/17, 354/34

G01S 13/74 (2006.01) A01K 11/00 (2006.01) A01K 61/00 (2006.01) G06K 19/07 (2006.01) G06K 19/077 (2006.01) G07C 9/00 (2006.01)

Patent

CA 1325051

-36- ABSTRACT OF THE DISCLOSURE An improved transponder for transmitting an iden- tification of an animal or the like is described which is sufficiently miniaturized to be syringe-implant- able, thus avoiding the necessity of surgical proced- ures. The transponder comprises a coil which receives an interrogation signal and transmits and identifica- tion signal in response thereto. The transponder re- ceives the energy required for transmission by induc- tive coupling to an interrogator. A single integrated circuit chip is provided which detects the interroga- tion signal, rectifies it to generate power needed for transmission, stores an identification of the trans- ponder and hence of the animal in which it is implant- ed, and generates a frequency-shift-keyed, Manchester encoded identification signal in response to the in- terrogation signal. The device transmits the identi- fication signal in real time, that is, immediately upon commencement of the interrogation signal, such that no discrete elements for energy storage are re- quired. The transmission frequency and the bit rate are both determined by integer division of the inter- rogation signal such that no discrete elements such as crystal oscillators are required for signal genera- tion.

559484

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