Communications: electrical – Condition responsive indicating system – Specific condition
Patent
1996-01-30
1997-03-11
Swann, Glen
Communications: electrical
Condition responsive indicating system
Specific condition
340540, 340654, 340687, 340693, 364184, 364185, 364514R, G08B 2100
Patent
active
056105932
ABSTRACT:
A portable terminal unit is connected to a network, such as a LAN, to communicate with a host apparatus. The terminal unit has a decision unit for determining whether or not the terminal unit is connected to the transmission line and/or a decision unit for determining whether or not the terminal unit is connected to the external power source. the terminal unit also has a communication controller for starting to communicate with the host apparatus when the decision units determine that the terminal unit is connected to the transmission line and/or to the external power source. The terminal unit therefor does not perform useless communication control, such as when the terminal unit is not connected to a transmission line of the LAN or to an external power source.
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patent: 5347265 (1994-09-01), Shimura
patent: 5406260 (1995-04-01), Cummings et al.
Crayford, Ian, "10Base-T in the Office," Wescon Conference Record, vol. 35, Nov. 1991, North Hollywood, CA, pp. 232-237.
Fujitsu Limited
Swann Glen
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