Method and system utilizing a negotiation phase to transfer comm

Details Method and system utilizing a negotiation phase to transfer comm Method and system utilizing a negotiation phase to transfer comm

1996-06-11

1999-07-20

Lee, Thomas C.

395823, 395824, 395825, 395828, 395834, 395840, G06F 1342

Patent

active

059266503

ABSTRACT:
A command information transfer method and system capable of transferring command information by discriminating it from data information, and capable of using protocols of IEEE P1284, when a nibble or byte mode is incorporated which is stipulated by IEEE P1284 as bi-directional parallel I/F. A new communication mode simulating the extensibility link is set by an extensibility request value undefined by IEEE P1284 and command information is transferred at the second and following bytes of such multiple-byte negotiation. An nFault signal is used for both a notice of error and for a reverse direction information transfer request.

REFERENCES:
patent: 5327539 (1994-07-01), Sudo et al.
patent: 5561821 (1996-10-01), Gephardt et al.
patent: 5581669 (1996-12-01), Voth
patent: 5634081 (1997-05-01), Krakirian
patent: 5710939 (1998-01-01), Ballachino et al.
IEEE 1284 Standard as disclosed by Warp Nine Engineering, High-Speed, Enhanced Peripheral Connectivity Solutions, Internet--http://www.fapo.com/, Dec. 1994.

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