Interrogation, and detection system
LIMIS systems, devices and methods
Method and apparatus for customer performed article scanning in self-service shopping
Surveillance, pricing and inventory system
Location of objects
Intelligent shopping cart system having cart position determining capability
Product information system for shoppers
Self service cart system Patent #: 5418354
ApplicationNo. 955467 filed on 10/21/1997
US Classes:705/23, Input by product or record sensing (weighing, scanner processing)705/22Inventory monitoring
ExaminersPrimary: Voeltz, Emanuel T.
Assistant: Groutt, Phillip
Attorney, Agent or Firm
Foreign Patent References
International ClassG06F 017/00
AbstractThe present apparatus is a mobile shopping cart that can automatically keep track of objects selected and carried in the cart and provide a customer using the cart information like the total price of the items carried. The cart has a radio frequency cart base station with a cart antenna connected to a radio frequency cart transceiver. Various novel embodiments of the invention produce a radio frequency field within the shopping cart that is used to communicate with radio frequency tags on objects carried in the cart. The tags contain information about the respective carried object to which the tags are attached. A program function executed by the cart circuit and/or computer controls the cart transceiver to interrogate radio frequency tags within the radio frequency field, i.e. inside the cart to gain information about the carried objects. Tags on objects external to the cart are not interrogated.