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Dwaine S Hurta, Francis B Frazee: Method and system for calculating a user account balance in a recognition system. Texas Instruments Incorporated, Rebecca Mapstone Lake, James C Kesterson, Richard L Donaldson, September 15, 1998: US05809142 (118 worldwide citation)

A system and method in which a transponder (14) is operable to transmit an original user account balance to an interrogator (12), which in turn calculates a revised user account balance and transmits the revised user account balance to the transponder (14). In one embodiment of the invention, the tr ...


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Dwaine S Hurta, Francis B Frazee: Transponder maintenance mode method. Texas Instruments Incorporated, Rebecca A Mapstone, James C Kesterson, Richard L Donaldson, November 11, 1997: US05686920 (117 worldwide citation)

A method and system is provided for communicating permanent or semi-permanent information to a transponder (14) from an interrogator (12), preferably operated by a toll agency or other authorized entity. This permanent or semi-permanent information is communicated by means of special instructions va ...


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Dwaine S Hurta, Francis B Frazee: Transponder maintenance mode method. Texas Instruments Incorporated, Brian C McCormack, James C Kesterson, Richard L Donaldson, September 12, 1995: US05450087 (40 worldwide citation)

A method and system is provided for communicating permanent or semi-permanent information to a transponder (14) from an interrogator (12), preferably operated by a toll agency or other authorized entity. This permanent or semi-permanent information is communicated by means of special instructions va ...


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Mark A Bryans, James H Cline, Francis B Frazee, Lark E Lehman: High speed serial data link. Texas Instruments Incorporated, Rene E Grossman, Melvin Sharp, December 18, 1990: US04979185 (38 worldwide citation)

A high bit-rate serial communications link encodes data by inserting non-data 0's and 1's. These extra bits are removed by a decoder at the receiving end of the link. Transmission of data can be made along optical fibers.


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Mark A Bryans, James H Cline, Francis B Frazee, Lark E Lehman: High speed serial data link. Texas Instruments Incorporated, Robert D Marshall Jr, James C Kesterson, Richard L Donaldson, January 2, 1996: USRE035137

A high bit-rate serial communications link encodes data by inserting non-data 0's and 1's. These extra bits are removed by a decoder at the receiving end of the link. Transmission of data can be made along optical fibers.