Abstract: An image format and method are presented for storing a digital image in the image format. The image format includes image data and executable computer instructions. Displaying a digital image stored in this image format requires executing the stored executable instructions which generate the image data for the associated digital image.

Abstract: An image format and method are presented for storing a digital image in the image format. The image format includes image data and executable computer instructions. Displaying a digital image stored in this image format requires executing the stored executable instructions which generate the image data for the associated digital image.

Abstract: A system for determining movement of an item bearing an RFID label. The system includes an RFID reader for receiving RFID label identification information from an RFID label associated with the item, and a computer for determining a location of the RFID label and the item by determining location information for the RFID reader, for determining a preferred location for the RFID label and the item, and for comparing the determined location with the preferred location to determine that the RFID label and the item have been moved.

Abstract: An electronic price label which produces a wider vertical viewing angle than previous electronic price labels for improved reading of prices at different shelf heights. The electronic price label includes a liquid crystal display for displaying character information, including price information, along a substantially horizontal direction. The liquid crystal display includes a number of polarizers which produce a maximum vertical viewing angle and a maximum horizontal viewing angle, wherein the maximum vertical viewing angle is greater than the maximum horizontal viewing angle.

Abstract: A restaurant transaction processing system which employs low-cost cordless phone transceivers to transmit orders. A server includes a first cordless telephone transceiver. A portable computer includes a second cordless telephone transceiver and transfers order data to the first computer. The first and second cordless telephone transceivers preferably operate at frequencies designated by the FCC and have a transmission range less than five thousand feet. A typical frequency of operation is in a frequency band near 900 MHz. The system may also include a kitchen terminal which is coupled to the server through a network, and a transaction processing terminal which is also coupled to the server through the network. The server maintains transaction data, routes orders to the kitchen terminal, and routes order ready signals from the kitchen terminal to the portable computer. The transaction processing terminal completes payment for the orders.

Abstract: An instruction communication network which employs low-cost cordless telephone technology to broadcast information to students. A first computer operated by a student includes a first cordless telephone transceiver. A second computer operated by a teacher transfers instruction data to the first computer and includes a second cordless telephone transceiver. The cordless telephone transceivers preferably operate at frequencies designated by the FCC and has a transmission range less than five thousand feet. A typical frequency of operation is in a frequency band near 900 MHz. The first computer may encrypt responses to the instruction data.