Abstract: A method for use in marketing includes detecting, at the point-of-sale, a plurality of Uniform Product Codes associated with respective items purchased by a customer. The method also includes transmitting, on a substantially real-time basis, the plurality of Uniform Product Codes over the Internet to a remote computer connected to the Internet.

Abstract: A method for use in marketing includes detecting, at the point-of-sale, a plurality of Uniform Product Codes associated with respective items purchased by a customer. The method also includes transmitting, on a substantially real-time basis, the plurality of Uniform Product Codes over the Internet to a remote computer connected to the Internet.

Abstract: A method for use in marketing includes detecting, at the point-of-sale, a plurality of Uniform Product Codes associated with respective items purchased by a customer. The method also includes transmitting, on a substantially real-time basis, the plurality of Uniform Product Code over the Internet to a remote computer connected to the Internet.

Abstract: A method for transmitting data packets having a heading followed by a data field. The data of the field is transmitted by groups of symbols. According to the OFDM technique, subcarriers modulated by the groups are generated. A frequency modulation of a carrier signal delivered by a linear ramp generator is produced with a set of modulated subcarriers. When the signal is received, mixing with a linear ramp results in subcarriers which are separated and then demodulated for supplying data. This is useful for transmitting data packets particularly in wide band networks.

Abstract: A method for customer promotion includes sequentially processing each of a plurality of items in a customer order. The price of each item is accumulated after processing. A marginal discount associated with each item processed is generated. This marginal discount is generated in response to a signal that indicates the accumulated price exceeds a predetermined threshold. Unapplied marginal discounts are accumulated for application to the customer order. A discount is applied to the customer order in response to a signal that is generated that indicates the accumulated discounts exceeds a predetermined minimum.

Abstract: A method for customer promotion includes sequentially processing each of a plurality of items in a customer order. The price of each item is accumulated after processing. A marginal discount associated with each item processed is generated. This marginal discount is generated in response to a signal that indicates the accumulated price exceeds a predetermined threshold. Unapplied marginal discounts are accumulated for application to the customer order. A discount is applied to the customer order in response to a signal that is generated that indicates the accumulated discounts exceeds a predetermined minimum.