Radiotelephone credit card data communications
First Claim
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1. A method for communicating credit card information from a mobile radiotelephone unit to a radiotelephone system in which a radiotelephone call from the mobile unit will be authorized if the costs of the radiotelephone call may be charged against a valid credit card, comprising the steps of:
- reading a credit card identification number and creating a data field therefrom at the mobile unit;
generating a message having a format comprising;
(a) an opening flag of at least one start-of-header (SOH) character,(b) a data length character,(c) a message type character,(d) said created data field,(e) at least one cyclic redundancy code character, and(f) at least one longitudinal redundancy check character; and
transmitting said generated message from a transmitter of the mobile unit.
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Abstract
Method and apparatus for communicating credit card information read at a mobile radiotelephone unit is disclosed. Data read from a credit card is placed in a variable length error protected format and transmitted from the mobile radiotelephone unit to authorize payment of the radiotelephone call.
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Citations
20 Claims
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1. A method for communicating credit card information from a mobile radiotelephone unit to a radiotelephone system in which a radiotelephone call from the mobile unit will be authorized if the costs of the radiotelephone call may be charged against a valid credit card, comprising the steps of:
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reading a credit card identification number and creating a data field therefrom at the mobile unit; generating a message having a format comprising; (a) an opening flag of at least one start-of-header (SOH) character, (b) a data length character, (c) a message type character, (d) said created data field, (e) at least one cyclic redundancy code character, and (f) at least one longitudinal redundancy check character; and transmitting said generated message from a transmitter of the mobile unit. - View Dependent Claims (2, 3, 4, 5)
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6. The apparatus for communicating credit card information from a mobile radiotelephone unit to a radiotelephone system in which a radiotelephone call from the mobile unit will be authorized if the costs of the radiotelephone call may be charged against a valid credit card, comprising:
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means for reading a credit card identification number and creating a data field therefrom at the mobile unit; means for generating a message having a format comprising; (a) an opening flag of at least one start-of-header (SOH) character, (b) a data length character, (c) a message type character, (d) said created data field, (e) at least one cyclic redundancy code character, and (f) at least one longitudinal redundancy check character; and means for transmitting said generated message from the mobile unit. - View Dependent Claims (7, 8, 9, 10)
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11. A method for communicating credit card information via a radiotelephone system having a plurality of mobile units with radio transceivers, at least one base site transceiver, and a registration computer in which a radiotelephone call from a requesting mobile unit will be authorized if the costs of the radiotelephone call may be charged against a valid credit card, comprising the steps of:
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reading a credit card identification number and creating a data field therefrom at one of the mobile units; generating a message having a format comprising; (a) an opening flag of at least one start-of-header (SOH) character, (b) a data length character, (c) a message type character, (d) said created data field, (e) at least one cyclic redundancy code character, and (f) at least one longitudinal redundancy check character; transmitting said generated message from a transmitter of said one of the mobile units; receiving said transmitted generated message at a receiver of said at least one base site transceiver; calculating at least one local cyclic redundancy code character and at least one local longitudinal redundancy check character at the registration computer; comparing said calculated local cyclic redundancy code character to said at least one generated message cyclic redundancy code character and comparing said at least one calculated local longitudinal redundancy check character to said at least one generated message longitudinal redundancy check character; transmitting an acknowledge signal from a transmitter of said at least one base site transceiver if said comparison of said cyclic redundancy code characters indicates a substantial identity of characters and if said comparison of said longitudinal redundancy check characters indicates a substantial identity of characters; transmitting a negative acknowledge signal from a transmitter of said at least one base site transceiver if said comparison of said cyclic redundancy code characters and said longitudinal redundancy check characters indicates a mismatch of either character; and retransmitting said generated message, in response to said negative acknowledge signal being received at a receiver of said one of the mobile units. - View Dependent Claims (12, 13, 14, 15)
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16. The apparatus for communicating credit card information via a radiotelephone system having a plurality of mobile units with radio transceivers, at least one base site transceiver, and a registration computer in which a radiotelephone call from a requesting mobile unit will be authorized if the costs of the radiotelephone call may be charged against a valid credit card, comprising:
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means for reading a credit card identification number and creating a data field therefrom at one of the mobile units; means for generating a message having a format comprising; (a) an opening flag of at least one SOH character, (b) a data length character, (c) a message type character, (d) said created data field, (e) at least one cyclic redundancy code character, and (f) at least one longitudinal redundancy check character; means for transmitting said generated message from said one of the mobile units; means for receiving said transmitted generated message at said at least one base site transceiver; means for calculating at least one local cyclic redundancy code character and at least one local longitudinal redundancy check character at the registration computer; means for comparing said calculated local cyclic redundancy code character to said at least one generated message cyclic redundancy code character and comparing said at least one calculated local longitudinal redundancy check character to said at least one generated message longitudinal redundancy check character; means for transmitting an acknowledge signal from said at least one base site transceiver if said comparison of said cyclic redundancy code characters indicates a substantial identity of characters and if said comparison of said longitudinal redundancy check characters indicates a substantial identity of characters; means for transmitting a negative acknowledge signal from said at least one base site transceiver if said comparison of said cyclic redundancy code characters and said longitudinal redundancy check characters indicates a mismatch of either character; and means for retransmitting said generated message, in response to said negative acknowledge signal being received at a receiver of said one of the mobile units. - View Dependent Claims (17, 18, 19, 20)
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Specification