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4415972 |
Dual port memory interlock
There is provided a circuit which automatically selects one or the other of at least two contending processor circuits and selectively grants the selected processor circuit access to an exchange...
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4403285 |
System for automatically releasing a dead lock state in a data processing system
A dead lock releasing method automatically releases a dead lock state in a data processing system, wherein a plurality of kinds of tasks selectively use a plurality of common resources. When one...
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4399504 |
Method and means for the sharing of data resources in a multiprocessing, multiprogramming environment
Data resources are shared by applications executing on a plurality of central electronic complexes. Each complex of a pair includes a resource lock manager (IRLM) which maintains the hold and wait...
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4339793 |
Function integrated, shared ALU processor apparatus and method
A computing system architecture includes a central processing unit having a channel, arithmetic and logic unit, a plurality of working registers, and control logic; a plurality of local storage...
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4320455 |
Queue structure for a data processing system
One or more queue structures in a data processing system may include a threaded list of frames which are enqueued or dequeued from the list in accordance with four instructions wherein each list is...
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4298930 |
Apparatus for data transfer to microprocessors
In order to permit alternate transfer of different sets of data to a microprocessor over the same input/output lines, a coupling-decoupling circuit includes series-connected diodes and inverters....
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4249241 |
Object access serialization apparatus for a data processing system
A serialization apparatus for a data processing system wherein access restrictions are automatically enforced: (1) in behalf of individual machine instructions in order to maintain object...
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4162529 |
Interruption control system in a multiprocessing system
An entry requirement control system in a multiprocessing system having a plurality of central processing units (CPU's), a common main memory for storing a plurality of programs which are accessed...
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4104718 |
System for protecting shared files in a multiprogrammed computer
An arrangement for sharing file information among plural processes in a multiprogrammed computing system. Source program file declarations are compiled into file control structures which are placed...
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4000485 |
Data processing system providing locked operation of shared resources
A central processing system which includes a plurality of units coupled over a common electrical bus for the transfer of information between any two units, includes one unit in which there is a...
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3774158 |
MULTIPLE TERMINAL DISPLAY SYSTEM
Blocks of digital data representing different pictures are available at a remote data processing center for supply to the control channels of a DIVCON system. Each channel includes a refresh memory...
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3683418 |
METHOD OF PROTECTING DATA IN A MULTIPROCESSOR COMPUTER SYSTEM
A machine process that performs the function of assigning particular tasks to individual processors in a multiprocessor computer system so as to prevent undesired simultaneous access of stored data...
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3597741 |
INFORMATION CONTROL IN A PROCESSING SYSTEM
Information, such as stock market transactions, stored in a common memory, is to be displayed visually by a plurality of remotely disposed video monitors. The displays of the various monitors can...
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3573736 |
INTERRUPTION AND INTERLOCK ARRANGEMENT
A program control and interlock arrangement is shown wherein a chosen state of a given number of flag bits associated with data words processed by a first program are used to selectively activate...
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3528062 |
PROGRAM INTERLOCK ARRANGEMENT,INCLUDING TASK SUSPENSION AND NEW TASK ASSIGNMENT
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3284776 |
Data processing apparatus
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3253262 |
Data processing system
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3706077 |
Title is not available
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