Telecommunications – Transmitter and receiver at same station – Radiotelephone equipment detail
Reexamination Certificate
2005-04-26
2005-04-26
Urban, Edward F. (Department: 2685)
Telecommunications
Transmitter and receiver at same station
Radiotelephone equipment detail
C455S556200, C455S346000, C455S406000, C705S040000
Reexamination Certificate
active
06885877
ABSTRACT:
A portable communication device is used in a digital money system so as to pay for purchase by digital money by using the portable communication device. A remote communication interface interfaces radio-frequency communication with a remote communication terminal. A short-distance communication interface interfaces wireless communication with a communication terminal located in the vicinity of the portable communication device. Data or instruction information is input to the portable communication terminal by an inputting unit such as a key panel. The data is stored in a memory and is displayed on a display unit such as an LCD. An enciphering and deciphering circuit enciphers or deciphers the data to be transmitted or received so as to maintain security.
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Mizutani Masami
Ozaki Toru
Sasaki Shigeru
Chow Charles
Fujitsu Limited
Staas & Halsey , LLP
Urban Edward F.
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