초록 ▼

A wireless tag (102) is mechanically attached to a product. The wireless tag includes a product freshness detector (204) and a communicator (208) coupled to the product freshness detector for communicating the freshness to a user. The wireless tag also includes a wireless power supply (202) coupled

A wireless tag (102) is mechanically attached to a product. The wireless tag includes a product freshness detector (204) and a communicator (208) coupled to the product freshness detector for communicating the freshness to a user. The wireless tag also includes a wireless power supply (202) coupled to the product freshness detector and coupled to the communicator for powering the wireless tag from a wireless energy source. A reader (104) powers the wireless tag and includes a transmitter (702) for generating wireless energy for powering the wireless tag. The reader also includes a user interface (708) for providing control of the reader by the user.

대표청구항 ▼

[ What is claimed is:] [1.]1. A wireless tag for detecting and communicating a freshness of a perishable product, the wireless tag comprising:a product freshness detector attached to the perishable product;a communicator coupled to the product freshness detector for communicating the freshness to a

[ What is claimed is:] [1.]1. A wireless tag for detecting and communicating a freshness of a perishable product, the wireless tag comprising:a product freshness detector attached to the perishable product;a communicator coupled to the product freshness detector for communicating the freshness to a user; anda wireless power supply coupled to the product freshness detector and coupled to the communicator for powering the wireless tag from a wireless energy source.