Patent
1991-10-07
1992-07-14
Evans, Arthur G.
395112, 395114, G06K 1500
Patent
active
051310767
ABSTRACT:
A chinese pictograph or graphic device mounted on a printer port, to which modular design is applied with no need of changing the printer port interface of personal computers PC and printers, this device can be externally mounted, as required, between the printer port interface of a PC and the parallel interface of its printer. With this newly-designed device, the PC can sent forth control signals and status signals to generate pictographic data which can be transmitted to the invented device by way of data bus, and the data, after being processed in the invented device, can be transferred to required pictures or graphics and sent back to the printer port of a PC, thus the PC can read out the required pictures or graphic from its printer port, the PC also can order the printer to print the data which transmitted by data bus no need of the procession of the invented device. Such a invented device can improve the advantages of a conventional design and exert high efficiency, and more particularly becomes the only means to remedy the disadvantages of lap-top and notebook-type personal computers.
REFERENCES:
patent: 4122520 (1978-10-01), Adamchick et al.
patent: 4641263 (1987-02-01), Perlman et al.
Chen Yun-Tsai
Lin Ming-Tao
Yang Jen-Tsun
Eastern Graphics Technology Co., Ltd.
Evans Arthur G.
LandOfFree
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