Network system, control method, control apparatus, and...

Details Network system, control method, control apparatus, and... Network system, control method, control apparatus, and...

2006-04-04

2006-04-04

Bragdon, Reginald G. (Department: 2185)

Electrical computers and digital processing systems: multicomput

Multicomputer data transferring via shared memory

Plural shared memories

C709S201000, C711S203000, C711S141000

Reexamination Certificate

active

07024463

ABSTRACT:
A logical name of shared data is defined. A network system comprises a communication portion for exchanges of data with other control apparatuses; a link memory (15) for storing data shared through the network; an indirect reference table (16) for storing logical names and the pointers used to access data stored in the link memory; and a database (17) of variables in which logical names are associated with memory addresses in the indirect reference table storing the pointers of the logical names. A control execution portion (18) accesses the link memory through the indirect reference table based on a logical name so that there is no need to know the specific memory location. Specifically, the user program contains logical names and no addresses (pointers) storing data.

REFERENCES:
patent: 6081833 (2000-06-01), Okamoto et al.
patent: 09-54719 (1997-02-01), None
patent: 09-91011 (1997-04-01), None
patent: 10-23047 (1998-01-01), None

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