Importance

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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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First Claim