Power harvesting and use in a near field communications (NFC) device

摘要

Apparatus for harvesting and using power in a near field communications mode, includes a host device with operating components. A first near field communication (NFC) device is contained in the host device and is configured to be selectively coupled to one of the operating components. The first NFC device harvests energy from a second NFC device and converts the harvested energy to electrical power. The first NFC device receives information from the second NFC device and power on the operating component as a function of the information received from the second NFC device. The first NFC device transfers data to or from the operating component when the operating component is powered on. The first NFC device powers off the operating component when the transfer of data between the first NFC device and the operating component has been completed.

主权项

1. A host device, comprising:
a memory storing data; a processor; and a first near field communication (NFC) device configured to convert energy received from a second NFC device into electrical power, wherein the first NFC device is configured to obtain the data from the memory while the first NFC device uses the electrical power converted from the energy received from the second NFC device to power the memory, and wherein the first NFC device is configured to, after powering off the memory, transfer the data to the processor to process the data while the first NFC device uses the electrical power converted from the energy received from the second NFC device to power the processor.