Multiplex communications – Wide area network – Packet switching
Patent
1994-09-06
1996-06-04
Bayerl, Raymond J.
Multiplex communications
Wide area network
Packet switching
370 691, G06K 1500, H04Q 700
Patent
active
055241859
ABSTRACT:
A wireless common printer system capable of achieving a print operation in accordance with a priority sequence by, at the side of personal computers, differentially encoding data to be printed by use of pseudo noise codes allocated to the computers like intrinsic identifiers and transmitting the data after spreading it in a direct sequence and, at the side of printer, extracting data from those received from the computers by use of a despread spectrum technique utilizing matched filters having individual intrinsic identifier codes. Since the common printer system is the wireless system eliminating requirements of a separate printer switching unit and a printer cable, there is no limitation on the usable distance in so far as electric power of a certain radio frequency is kept. By virtue of this feature, the common printer system provide an enhanced convenience when it is applied to lap top computers and personal note book computers having a high movability.
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Bayerl Raymond J.
Hyundai Electronics Industries Co.
Sax Steven P.
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