Transition and connection device for radio frequency point of sa

Details Transition and connection device for radio frequency point of sa Transition and connection device for radio frequency point of sa

1995-04-17

1999-01-19

Pham, Chi H.

Pulse or digital communications

Transmitters

379 9101, 235351, 370474, H04L 2549, H04L 2704, H04L 2712

Patent

active

058621830

ABSTRACT:
A device is provided that interfaces with existing point of sale credit card reading devices, and furnishes the option of transmitting data over either the existing modem installation or a radio frequency data communication network. The device scans the information encoded on the credit card to determine which data transmission path is appropriate for a particular transaction. The device software generates the necessary signals to simulate the normal interaction between the POS cardreader device and a modem. The software also converts between serial and packetized data in order to request and receive credit card purchase authorizations over the radio frequency data communication network.

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