Card reader for transmission of data by sound
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Oct 10, 2000
Grant Date -
N/A
app pub date -
Aug 3, 1998
filing date -
Aug 3, 1998
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A portable card reader is designed to be carried in a wallet or purse. In a first embodiment, the card reader has an electromagnetic head that reads information from a magnetic strip of a card. In a second embodiment, information is read from the card by an array of Hall sensors. In both embodiments, the information read from the card is converted to a sequence of electronic bursts of predetermined frequency, preferably in the audible or ultrasound range. The sound signals are output by a speaker to the microphone of a telephone. The signal is then transmitted over the telephone lines to a remote receiver. The receiver then converts the sound bursts into signal pulses which can be read using the computer software of a conventional card reader.
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