1995-11-20
1998-07-07
Sheikh, Ayaz R.
395311, G06F 1300
Patent
active
057781958
ABSTRACT:
A PC card including a PCMCIA interference connected to external system equipment, a communication control section for communication through an external line, and a memory control section connected to a memory device. The PC card also includes an internal bus including a data bus, an address bus and a control signal bus connects a plurality of functions in the PC card, that is, the PCMCIA interface, the communication control section and the memory control section, to each other. By providing the control signal bus for various control signals, the PC card can be used in various modes. For example, in one mode, the PC card can be used in various modes. For example, in one mode, the PC card can be used as a communication card or a memory card. In another mode, data can be transferred through the internal bus between the communication control section and the memory control section. In yet another mode, the PC card can be used as a communication card and a memory card in a time-sharing manner. Further, a plurality of internal buses may be provided exclusively for various functions of the PC card.
REFERENCES:
patent: 5420412 (1995-05-01), Kowalski
patent: 5451933 (1995-09-01), Stricklin et al.
patent: 5617449 (1997-04-01), Tanaka
patent: 5619396 (1997-04-01), Gee et al.
Mitsubishi Denki & Kabushiki Kaisha
Sheikh Ayaz R.
Wiley David A.
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