Patents
Patents for G06F 13 - Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units (158,002)
02/1977
02/01/1977US4006466 Programmable interface apparatus and method
02/01/1977US4006465 Apparatus for control and data transfer between a serial data transmission medium and a plurality of devices
02/01/1977US4006456 Loop fault location and isolation
01/1977
01/25/1977US4005391 Peripheral interrupt priority resolution in a micro program data processor having plural levels of subinstruction sets
01/25/1977US4005389 Arrangement for reducing the access time in a storage system
01/18/1977US4004283 Multiple interrupt microprocessor system
01/18/1977US4004282 Circuit arrangement for an integrated data processing system composed of a small number of different chip types with all chips directly connectable to a common collecting bus
01/18/1977US4004280 Calculator data storage system
01/18/1977US4004279 Method and apparatus for controlling data transfer between input and output devices and a direct digital controller
01/18/1977US4004277 Switching system for non-symmetrical sharing of computer peripheral equipment
01/18/1977US4004275 Self-clocking data entry unit system
01/11/1977US4003032 Automatic terminal and line speed detector
01/11/1977US4003030 Electronic cash register
01/11/1977US4002833 Rate independent signalling means
01/04/1977US4001789 Microprocessor boolean processor
01/04/1977US4001784 Data processing system having a plurality of input/output channels and physical resources dedicated to distinct and interruptible service levels
01/04/1977US4001783 Priority interrupt mechanism
01/04/1977US4001693 Apparatus for establishing communication between a first radio transmitter and receiver and a second radio transmitter and receiver
12/1976
12/28/1976US4000487 Output processing system
12/28/1976US4000485 Data processing system providing locked operation of shared resources
12/28/1976US4000378 Data communication system having a large number of terminals
12/21/1976US3999170 Multiple access interconnect system
12/21/1976US3999165 Interrupt information interface system
12/21/1976US3999163 Secondary storage facility for data processing systems
12/21/1976US3999053 Interface for connecting a data-processing unit to an automatic diagnosis system
12/14/1976US3997896 Data processing system providing split bus cycle operation
12/14/1976US3997875 Computer configuration with claim cycles
12/14/1976US3997872 Synchronizer circuit
12/07/1976US3996564 Input/output port control
12/07/1976US3996561 Priority determination apparatus for serially coupled peripheral interfaces in a data processing system
11/1976
11/23/1976US3993981 Apparatus for processing data transfer requests in a data processing system
11/23/1976US3993936 Connector arrangement for printed circuit card
11/16/1976US3992696 Self-checking read and write circuit
11/02/1976US3990055 Control system for magnetic disc storage device
11/02/1976US3990050 Computer controlled automatic response system
11/02/1976US3990046 Multiple terminal computer system with mixed terminal data reception rates
10/1976
10/26/1976US3988719 Microprogrammed data processing systems
10/26/1976US3988716 Computer interface system
10/12/1976US3986170 Modular control system design with microprocessors
10/12/1976US3986169 Device protection method and apparatus
10/12/1976US3985962 Method of information transmission with priority scheme in a time-division multiplex communication system comprising a loop line
10/05/1976US3984819 Data processing interconnection techniques
10/05/1976US3984812 Computer memory read delay
09/1976
09/28/1976US3983540 Rapid bus priority resolution
09/21/1976US3982061 Data transfer control apparatus
09/07/1976US3979732 Asynchronous status interlock circuit for interface adaptor
09/07/1976US3979730 Interface adaptor having control register
09/07/1976US3979723 Digital data communication network and control system therefor
08/1976
08/31/1976US3978451 Controlling communications between computer devices over common bus
08/31/1976US3978449 Method and apparatus for in-band signalling in data transmission
08/24/1976US3976979 Coupler for providing data transfer between host and remote data processing units
08/24/1976US3976977 Processor for input-output processing system
08/17/1976US3975712 Asynchronous communication interface adaptor
08/10/1976US3974479 Memory for use in a computer system in which memories have diverse retrieval characteristics
08/03/1976US3973244 Microcomputer terminal system
07/1976
07/27/1976US3972030 Peripheral control capable of dynamically executing command sequences
07/27/1976US3972023 O data transfer control system
07/20/1976US3970997 High speed peripheral system interface
07/20/1976US3970994 Communication switching system
07/20/1976US3970799 Common control signaling extraction circuit
07/06/1976US3968478 Chip topography for MOS interface circuit
06/1976
06/29/1976US3967249 Priority selection system in access control
06/29/1976US3967248 Arrangement for double-writing into a memory during data field relocation
06/29/1976US3967246 Digital computer arrangement for communicating data via data buses
06/15/1976US3964088 Multi-unit equipment maintenance system
06/15/1976US3964056 System for transferring data between central units and controlled units
06/15/1976US3964054 Hierarchy response priority adjustment mechanism
06/15/1976US3963870 Time-division multiplex switching system
06/08/1976US3962684 Computing system interface using common parallel bus and segmented addressing
06/08/1976US3962683 CPU programmable control system
06/01/1976US3961312 Cycle interleaving during burst mode operation
06/01/1976US3961139 Time division multiplexed loop communication system with dynamic allocation of channels
05/1976
05/25/1976US3959775 Multiprocessing system implemented with microprocessors
05/25/1976US3959638 Highly available computer system
05/18/1976US3958226 Data communication system
05/18/1976US3958225 Apparatus and method for controlling a communications terminal
05/18/1976US3958088 Communications systems having a selective facsimile output
05/04/1976US3955180 Table driven emulation system
04/1976
04/27/1976US3953835 Method and apparatus for adapting a data processing port to receive and transmit different frequency signals
04/13/1976US3950735 Write operations in a peripheral subsystem
04/13/1976US3950731 Data processing arrangement for printers
04/06/1976US3949380 Peripheral device reassignment control technique
04/06/1976US3949374 Arrangement for supplying input signals to central processing units without interruption of programs
04/06/1976US3949371 Input-output system having cyclical scanning of interrupt requests
04/06/1976US3949168 Selectively clamped digital signal transmission system
03/1976
03/30/1976US3947824 Priority control circuit
03/30/1976US3947818 Bus-coupler
02/1976
02/24/1976US3940743 Interconnecting unit for independently operable data processing systems
02/24/1976US3940742 Data acquisition, storage and display system
02/17/1976US3939455 Microprocessor having an interface for connection of external devices
02/10/1976US3938101 O emulation
02/10/1976US3938098 Output connection arrangement for microprogrammable computer
02/10/1976US3938094 Computing system bus
02/03/1976US3936803 Data processing system having a common channel unit with circulating fields
02/03/1976US3936600 Keyboard-printer terminal interface for data processing
01/1976
01/20/1976US3934232 Interprocessor communication apparatus for a data processing system
01/20/1976US3934230 Automatic selector for peripheral equipment
01/13/1976US3932847 Time-of-day clock synchronization among multiple processing units
01/13/1976US3932845 Specialized digital computer with divided memory and arithmetic units
01/13/1976US3932841 Bus controller for digital computer system