Transponders and methods for operating a transponder
AssigneeNXP B.V.
InventorGerald Schaffler
Life of this patent
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Abstract
In a method for operating a transponder (1, 41), the transponder (1, 4) receives a signal from a transmitter (2, 42). The signal comprises an information about a reference sensitivity and the transponder (1, 41) has an input sensitivity such that the transponder (1, 41) detects only signals above a certain power corresponding to the input sensitivity. In response to the received signal, the input sensitivity of the transponder (1, 41) is adjusted to the reference sensitivity.
Claims10
A method for operating a transponder, comprising:
- receiving a signal from a transmitter with a transponder having an input sensitivity such that said transponder detects only signals above a certain power corresponding to said input sensitivity;
- said signal comprising an information about a reference sensitivity;
- and
- adjusting said input sensitivity to said reference sensitivity.
A method for operating a transponder, comprising:
- receiving a signal from a transmitter with a transponder having an input sensitivity such that said transponder detects only signals above a certain power corresponding to said input sensitivity;
- said signal comprising an information about a distance within which said transponder shall be able to detect signals sent by said transmitter;
- and
- adjusting said input sensitivity of said transponder so that said transponder detects only signals sent by said transmitter, if said transponder is within said distance to said transmitter.
A transponder comprising a receiver to receive signals sent by a transmitter;
- said receiver having an input sensitivity such that said transponder detects only signals above a certain power corresponding to said input sensitivity and said transponder being configured to adjust said input sensitivity to a reference sensitivity in response to a received signal sent by said transmitter;
- said received signal comprising an information about said reference sensitivity.
A transponder comprising a receiver to receive signals sent by a transmitter;
- said receiver having an input sensitivity such that said transponder detects only signals above a certain power corresponding to said input sensitivity and said transponder being configured to adjust said input sensitivity in response to a received signal sent by said transmitter and comprising an information about a distance so that said transponder detects only signals sent by said transmitter, if said transponder is within said distance to said transmitter.
Dependencies are inferred from the claim text.