Boots – shoes – and leggings
Patent
1992-10-30
1994-03-15
Black, Thomas G.
Boots, shoes, and leggings
364488, 364490, 364491, G06F 1500
Patent
active
052950816
ABSTRACT:
A method for allowing multiple users to simultaneously edit circuit wiring data, such as VLSI circuit data. The circuit data, contained in a computer database, is partitioned into a plurality of "parcels". Two types of wiring networks are identified within each parcel, internal and external. An internal network is completely enclosed within a parcel, whereas an external net spans two or more parcels. Each of the parcels may be simultaneously worked on by an individual user or circuit designer. Changes made to an internal wiring network has no impact on any of the other parcels. Changes made to an external wiring network does impact on other parcels which share the external network. A "design controller" is provided which restricts editing accessibility of an external network to one user at a time and locks out all other users. After changes are made to an external wiring network the database and the other parcels are updated to reflect the changes before the external network can be accessed again.
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patent: 4908772 (1990-03-01), Chi
patent: 4965741 (1990-10-01), Winchell et al.
patent: 5008853 (1991-04-01), Bly et al.
patent: 5129070 (1992-07-01), Dorotte
patent: 5164907 (1992-11-01), Yabe
Black Thomas G.
International Business Machines - Corporation
Louis-Jacques Jacques H.
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