Apparatus and method of data transfer between systems using diff

Details Apparatus and method of data transfer between systems using diff Apparatus and method of data transfer between systems using diff

1992-12-30

1994-09-13

Wambach, Margaret Rose

Electrical pulse counters, pulse dividers, or shift registers: c

Systems

Using shift register

377 56, 395164, 395550, H03K 2108

Patent

active

053475593

ABSTRACT:
According to one aspect of the invention, an apparatus includes a first processor coupled to a first system bus to provide data to a cache and a memory, and a second processor coupled to the first system bus and a second abbreviated system bus to receive read data from said first system bus. In accordance with a further aspect of the invention, an apparatus includes means for correcting errors in memory. In accordance with a further aspect of the invention, an apparatus includes a number of computing systems each including a memory device mounted on an infrequently replaced hardware unit, and capable of communicating with the number of computing systems. In accordance with another aspect of the invention, an apparatus includes a counter, means for detecting a selected state of said counter, and means, responsive to output signals from said counter, for selectively permitting or inhibitting transfer of data fed to a recirculating state device. In accordance with a further aspect of the invention, an apparatus includes a first means for providing a first clocking signal, a second means for providing a second clocking signal, means for providing an error signal responsive to an offset between edges of the first and second clocking signals.

REFERENCES:
patent: 5058054 (1991-10-01), Feldman
patent: 5164677 (1992-11-01), Hawkins et al.

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