Communication partner appliance with automatic send mode activation
View Patent ↗A communication partner appliance is implemented within a near field communication system. The communication partner appliance includes a receiver, a detector, and a processor. The receiver receives a NFC command signal from another communication partner appliance. The detector detects whether a carrier signal from the other communication partner appliance is present at the receiver at a time other than during a transmission of the NFC command signal from the other communication partner appliance to the receiver. The processor controls a power supply element based on a determination by the detector whether the carrier signal from the other communication partner appliance is present at the receiver. The power supply element is configured to establish a connection to either a first power supply or a second power supply. The first power supply is dependent on the carrier signal, and the second power supply is independent of the carrier signal.
1. A communication partner appliance comprising:
a transmitter configured to transmit a near-field communication (NFC) command signal to another communication partner appliance according to an active communication mode, wherein the NFC command signal includes a request for data from the another communication partner appliance; and
a processor coupled to a generator and the transmitter, wherein the processor is configured to switch from the active communication mode to a passive communication mode in response to a determination that a response signal is not received from the another communication partner appliance in response to a protocol for the active communication mode from the communication partner appliance, wherein the passive communication mode uses a first power supply that depends on a reader signal and a second power supply, used during the active communication mode, is not used during the passive communication mode.
2. The communication partner appliance of claim 1 , wherein the generator is configured in the active communication mode to generate a carrier signal only during transmission of the command signal to the another communication partner appliance.
3. The communication partner appliance of claim 2 , wherein the processor is further configured to influence a signal strength of a carrier signal used for the transmission of the command signal in the active communication mode.
4. The communication partner appliance of claim 1 , wherein the generator is configured in the passive communication mode to generate a carrier signal during and after transmission of the command signal to the another communication partner appliance.