Reduced cardbus controller

Electrical computers and digital data processing systems: input/ – Intrasystem connection – Bus expansion or extension

Reexamination Certificate

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Details

C710S010000

Reexamination Certificate

active

07096298

ABSTRACT:
A cardbus controller is provided that reduces signal count and board area. In one exemplary embodiment, the controller is adapted to multiplex selected signals in a two PC Card system so that signal lines are not repeated. The selected signals may include common signals between two PC Cards. The controller may also include early detection circuitry, arbitration circuitry and power management circuitry to more effectively operate two PC Cards. In other exemplary embodiments, the invention provides a method of reducing the chip area of a PC Card controller integrated circuit by mapping an internal IDSEL signal to an external address line.

REFERENCES:
patent: 6636904 (2003-10-01), Fry et al.
patent: 6636916 (2003-10-01), Campbell et al.
patent: 6807597 (2004-10-01), Oh et al.
patent: 2001/0027032 (2001-10-01), Inomata et al.
patent: 2004/0158751 (2004-08-01), Lam et al.
PCI Local Bus, Mini PCI Specification, Revision 1.0, Aug. 13, 1999.
Author unknown, Windows XP Professional Security, “Chapter 5: Operating System Enhancements”, date unknown, pp. 111-136.
ISO/IEC, International Standard, Identification cards—Integrated circuit(s) cards with contacts—“Part 10: Electronic signals and answer to reset for synchronous cards”, First edition Nov. 1, 1999, pp. 1-8.
ISO/IEC, International Standard, Information technology—Identification cards—Integrated circuit(s) cards with contacts—“Part 3: Electronic signals and transmission protocols”, Second edition Dec. 15, 1997. pp. 1-27.
Personal Computer Memory Card International Association and Japan Electronics and Information Technology Industries Association (PCMCIA/JEITA), “PC Card Standard”, Release 8.1, Dec. 2002, pp. 1-34.
Personal Computer Memory Card International Association and Japan Electronics and Information Technology Industries Association (PCMCIA/JEITA), “PC Card Standard”, vol. 3: Physical Specification, 2002, pp. 1-71.
Taiwan Office Action with English translation from related Taiwan application (2 pgs).
English translation of Chinese Office Action from related Chinese application (1 pg).

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