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Eduard Karel De Jong: Coherent data structure with multiple interaction contexts for a smart card. Belle Gate Investment, Young & Thompson, September 1, 1998: US05802519 (111 worldwide citation)

Data exchange system includes at least one portable data processing unit (5) having data communication elements (14), processing device (15) and memory elements (16). The latter includes an executive program (17) and one or more application descriptions (18(1) . . . 18(n)). Each application descript ...


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Eduard Karel De Jong: Data exchange system comprising portable data processing units. Belle Gate Investment, Young & Thompson, July 25, 2000: US06094656 (92 worldwide citation)

Data exchange system includes at least one portable data processing unit with data communication processing and memory units, the latter including an executive program and one or more application descriptors, each application description including at least one interaction context comprising commands ...


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Eduard Karel de Jong: Coherent data structure with multiple interaction contexts for a smart card. Belle Gate Investment, Young & Thompson, April 18, 2000: US06052690 (88 worldwide citation)

Data exchange system includes at least one portable data processing unit (5) having data communication elements (14), processing device (15) and memory elements (16). The latter includes an executive program (17) and one or more application descriptions (18(1) . . . 18(n)). Each application descript ...


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Eduard Karel De Jong: Superposition of data over voice. Sun Microsystems, Finnegan Henderson Farabow Garrett & Dunner L, February 7, 2006: US06996213 (86 worldwide citation)

Method and apparatus for transmitting messages between communication devices via a communication channel allowing at least voice messages to be transmitted, the messages including data subdivided in a sequence of basic data units, the method including; a) encoding the basic data units as unique sign ...


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Christopher John Stanford, Eduard Karel De Jong: Card charging systems. Transmo, Lee Mann Smith McWilliams Sweeney & Ohlson, July 27, 1999: US05930363 (69 worldwide citation)

A security device for use in a card charging system where a service or product providing facility issues services or products by the use of credit from a card. The security device comprises signal transmission means for delivering signals to a purchasing facility to enable a user to acquire a servic ...


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Christopher John Stanford, Eduard Karel De Jong: Card charging systems. Transmo, Mann Smith McWilliam Sweeney & Ohlson, April 23, 2002: US06375084 (29 worldwide citation)

In a card charging system, especially for public transport services, a host ticket facility is operable by both credit cards usable at a card read/write device and concessionary payment cards usable at a contactless card reader, and a security and transaction device located between the card readers ...


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Eduard Karel De Jong: Data exchange system comprising portable data processing units. Belle Gate Investments, Finnegan Henderson Farabow Garrett & Dunner L, May 7, 2002: US06385645 (21 worldwide citation)

Data exchange system includes at least one portable data processing unit with data communication processing and memory units, the latter including an executive program and one or more application descriptors, each application description including at least one interaction context comprising commands ...


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Eduard Karel De Jong: Secure photo carrying identification device, as well as means and method for authenticating such an identification device. Sun Microsystems, Finnegan Henderson Farabow Garrett & Dunner L, April 26, 2005: US06883716 (14 worldwide citation)

Means and a method for authenticating a photographic image (3) on an identification device (1), the identification device (1) being provided with: a photographic image of a person (3) and a microprocessor (8), the microprocessor (8) having: a) a processor (7), b) a memory (9) connected to the proces ...