Communications: electrical – Digital comparator systems
Patent
1973-10-26
1976-01-13
Springborn, Harvey E.
Communications: electrical
Digital comparator systems
179 15AL, 3401461BA, G06F 1300
Patent
active
039328414
ABSTRACT:
An arrangement is shown for controlling transmission of blocks of information to and from a plurality of major components of a digital computer system interconnected by common buses. The disclosed arrangement operates so that any component of the system may normally seize, on a nonpriority basis, one of the buses at the beginning of any time slot defined by two successive clock pulses generated by a single source and applied to all components simultaneously; however, if a special instruction is encountered during execution of a program, any component may retain a bus for more than one time slot. The disclosed arrangement also permits error checking of transmitted information from a given major component without interfering with transmission from any other major component and automatically causes retransmission of any block of information found to be improperly transmitted originally. Still further, the disclosed arrangement permits buses to be dedicated during execution of a program or, if desired, any complete major component to be replaced without affecting any other major component.
REFERENCES:
patent: 3742148 (1973-06-01), Ledeen et al.
patent: 3752932 (1973-08-01), Frisone
patent: 3755786 (1973-08-01), Dixon et al.
patent: 3755789 (1973-08-01), Collins
patent: 3757050 (1973-09-01), Mizote
Deerfield Alan J.
Nissen Stanley M.
McFarland Philip J.
Pannone Joseph D.
Raytheon Company
Sachs Michael C.
Springborn Harvey E.
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