Linda M Stewart

US Patent:

20080065662, Mar 13, 2008

Filed:

May 7, 2002

Appl. No.:

10/140557

Inventors:

Linda P. Stewart - Morgan Hill CA, US
Roger G. Stewart - Morgan Hill CA, US

International Classification:

G06F 7/00

US Classification:

707101

Abstract:

The invention according to one embodiment is a method of distributing information in an RFID tag code that allows a decrease in the tag code length and, at the same time, retains all the information required by longer hierarchical code specifications, such as the ePC code and G-tag code specifications. In another embodiment, the invention is a method of mapping information from a shorter tag code to a longer computer searchable hierarchical code with full data compatibility of the tag code data with the hierarchical code fields. In a further embodiment, the invention is a method of mapping a hierarchical code to a shorter tag code without loss of any information. Blocks in the domain space are sold to encourage judicious use of the space and to avoid wasting the space. Although it is desirable for a manufacturer to purchase domain space blocks that are contiguous in the domain space, the system disclosed is sufficiently flexible to accommodate manufactures of various sizes, as well as manufacturers whose needs change over time.