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)
12/1980
12/30/1980CA1092710A1 Status reporting
12/24/1980WO1980002881A1 Microcomputer with mpu-programmable eprom
12/23/1980US4241419 Asynchronous digital data transmission system
12/23/1980US4241398 Computer network, line protocol system
12/23/1980US4241330 Multiple-processor digital communication system
12/23/1980CA1092246A1 Data system with microprocessor featuring multiplexed data transfer and repeat cycle driving arrangement
12/16/1980US4240143 Hierarchical multi-processor network for memory sharing
12/16/1980US4240140 CRT display terminal priority interrupt apparatus for generating vectored addresses
12/16/1980US4240138 System for direct access to a memory associated with a microprocessor
12/16/1980CA1091811A1 Portable data entry device
12/11/1980WO1980002754A1 Interface unit between a computer and a hardcopy output device
12/10/1980EP0019757A1 Data processing system in which several preprocessors and a main processor superior to the preprocessors are arranged in a tree-structure
12/09/1980US4238834 Apparatus for coordinating real time transfer of data from a processor to a magnetic media device
12/09/1980CA1091359A1 Unidirectional looped busses microprocessor
12/09/1980CA1091358A1 Information handling system and terminal apparatus therefor
12/09/1980CA1091357A1 Console and data processing system
12/09/1980CA1091356A1 Programmable controller using microprocessor
12/02/1980US4237545 Programmable sequential logic
12/02/1980US4237543 Microprocessor controlled display system
12/02/1980US4237535 Apparatus and method for receiving and servicing request signals from peripheral devices in a data processing system
12/02/1980US4237534 Bus arbiter
12/02/1980US4237533 Preventing initial program load failures
12/02/1980US4237447 Speed independent selector switch for digital communication networks
11/1980
11/27/1980WO1980002608A1 Distributed first-come first-served bus allocation apparatus
11/25/1980US4236225 Data buffer memory of the first-in, first-out type, having a variable input and a fixed output
11/25/1980US4236209 Intersystem transaction identification logic
11/25/1980US4236208 Test mode control logic system
11/25/1980US4236203 System providing multiple fetch bus cycle operation
11/25/1980US4236087 Programmable bus driver isolation
11/18/1980US4234919 Intersystem communication link
11/18/1980CA1089946A2 Shared direct memory access controller
11/12/1980EP0018756A2 Speed independent arbiter switch for digital communication networks
11/12/1980EP0018755A1 Digital communication networks employing speed independent switches
11/12/1980EP0018754A1 Speed independent selector switch for digital communication networks
11/12/1980EP0018518A1 Buffer storage apparatus and data path concentrator incorporating this buffer storage apparatus
11/12/1980EP0018404A1 Memory system for programmable controller.
11/04/1980US4232366 Bus for a data processing system with overlapped sequences
11/04/1980US4232299 Wireless output/input system
11/04/1980US4232294 Method and apparatus for rotating priorities between stations sharing a communication channel
11/04/1980US4232206 Signal transmission control system
11/04/1980CA1089107A1 Channel bus controller
11/04/1980CA1089049A1 Method for data transmission and a system for carrying out the method
10/1980
10/29/1980EP0017988A1 Multiplex interface circuit connecting a processor to a synchronous transmission means
10/29/1980EP0017670A2 A data processing system arranged for controlling the transfer of data between a central processing unit and a storage device thereof
10/29/1980EP0017666A2 Methods of operating direct access storage means
10/28/1980US4231086 Multiple CPU control system
10/28/1980US4231084 Data transfer system
10/28/1980US4231015 Multiple-processor digital communication system
10/21/1980US4229825 Synchronizing circuit for a digital arrangement
10/21/1980US4229792 Bus allocation synchronization system
10/21/1980US4229791 Distributed arbitration circuitry for data processing system
10/21/1980US4229788 Interface unit facilitating communication between data processor and program-interrupting peripheral unit
10/21/1980CA1088176A1 Programmable communications subsystem
10/15/1980EP0016868A2 Method and apparatus to multiply the exits of a programmable controller
10/14/1980US4228504 Virtual addressing for I/O adapters
10/14/1980US4228501 Data transfer technique for use with peripheral storage devices
10/14/1980US4228500 Command stacking apparatus for use in a memory controller
10/14/1980US4228499 Interface unit for data exchange between a central processor and a peripheral unit in TDM telecommunication system
10/14/1980US4228498 Multibus processor for increasing execution speed using a pipeline effect
10/14/1980US4228496 Multiprocessor system
10/14/1980CA1087753A1 Computer memory interface apparatus
10/14/1980CA1087746A1 Method and apparatus for effecting inter-bus communications in a multi-bus data processing system
10/07/1980US4227178 Decentralized data transmission system
10/07/1980US4227045 Data processing protocol system
10/01/1980EP0015940A1 Memory device having a minimum number of pins
09/1980
09/30/1980US4225942 Daisy chaining of device interrupts in a cathode ray tube device
09/30/1980US4225939 Bidirectional data communication system
09/30/1980US4225934 Multifunctional arithmetic and logic unit in semiconductor integrated circuit
09/30/1980US4225921 Transfer control technique between two units included in a data processing system
09/30/1980US4225919 Advanced data link controller
09/30/1980US4225917 Error driven interrupt for polled MPU systems
09/23/1980US4224684 Receive/bypass circuit for subsystems in polling system
09/23/1980US4224667 Command queuing for I/O adapters
09/23/1980US4224665 Bus-organized computer system with independent execution control
09/23/1980CA1086397A1 Polling an data communication system having a pulse position to binary address conversion circuit
09/16/1980US4223380 Distributed multiprocessor communication system
09/09/1980US4222101 Arrangement for branching an information flow
09/04/1980WO1980001855A1 Mass memory access method and apparatus
09/03/1980EP0015112A1 Multiprocessor communications system
09/03/1980EP0015054A1 Bus connection systems
09/03/1980EP0014926A1 Interprocessor connection system
09/03/1980EP0014850A1 Appartus for extending the makro-instruction standard set in a computer
09/02/1980CA1085015A1 Access method to a common transmission channel for a plurality of data stations in a data transmission system, and arrangement for executing said method
08/1980
08/26/1980US4219881 Digital input control circuit
08/26/1980US4219875 Digital event input circuit for a computer based process control system
08/26/1980CA1084633A1 Overlapped and interleaved control store with address modifiers
08/26/1980CA1084632A1 Buffer chaining
08/26/1980CA1084627A1 Data handling module for programmable controller
08/20/1980EP0014592A2 Bus fault detector
08/19/1980US4218759 Sync in-sync out calibration for cable length delays
08/19/1980US4218758 Parallel-to-serial binary data converter with multiphase and multisubphase control
08/19/1980US4218742 System for controlling a serial data channel with a microprocessor
08/19/1980US4218740 Interface adaptor architecture
08/12/1980US4217637 Data processing unit with two clock speeds
08/12/1980CA1083727A1 Address converter in a data processing apparatus
08/12/1980CA1083726A1 System and method for sharing memory
08/12/1980CA1083724A1 Memory arrangement for use in a digital data processing system
08/12/1980CA1083687A1 Data processing system
08/06/1980EP0013853A1 Device for transferring data between a central processing unit of a data processor and a peripheral unit
08/06/1980EP0013740A1 Data processing apparatus having a system reset capability