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RF tag system with single step read and write commands

Image Number 4 for United States Patent #7769963.

A system has a read command signal that includes an Address field, Byte Data field, and Starting Address field. If the tag data read from the memory address identified by the Address field is the same as the Byte Data, the tag sends a response signal with Page Data read from the memory location identified by the Starting Address field and the tag ID. A write command signal includes an Address field, Byte Data field, Starting Address field, and Page Data field. If the tag data is the same as the Byte Data, the tag writes the data from the Page Data field to the memory location identified by the Starting Address field. Accordingly, data is read from and written to the tags in a single step, and the reader need not wait for the tag to respond with a tag ID before requesting that data be read from or written to that tag.

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