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5678062 Input/output control method and data processor  
A system for controlling the DMA transfer for a plurality of IO devices has an IO controller for each group of the IO devices. Data is retrieved from memory and stored in the IO controller where...
5678060 System for executing high speed communication protocol processing by predicting protocol header of next frame utilizing successive analysis of protocol header until successful header retrieval  
Communication control equipment for connecting a computer system to a network and supporting the computer system to set a plurality of connections on the network and perform parallel communication...
5671441 Method and apparatus for automatic generation of I/O configuration descriptions  
Automatic machine methods and apparatus for determining which components of an I/O configuration are shared by other components of the configuration. The information can be obtained through the...
5671396 M and A for executing firmware of an add-on FAX/Modem card on the host processor while maintaining compatibility  
A number of new interrupts, interrupt handlers, digital signal processing (DSP) tasks, registers and FIFOs are provided to an add-on fax/modem card and its host processor. The new FIFOs are used...
5664217 Method of avoiding physical I/O via caching with prioritized LRU management  
A method of caching I/O requests permits caching in the MVS environment independent of the access method protocol used to initiate an I/O request (e.g., QSAM, VSAM, Media Manager). In addition,...
5664073 Control system for transportation ticket printer having plurality of dual process personal computer boards for performing general computing tasks and sending data to printer control module  
An airline ticket printer includes a magnetic reading and writing station that has a read/write head for recording information on, or reproducing information from, a magnetic stripe carried on the...
5659696 Method and apparatus for determining address location and taking one of two actions depending on the type of read/write data transfer required  
A bus interface unit for passing data between an I/O bus and a system bus in a dual bus computer system is provided. The bus interface unit has incorporated therein an address listing and compare...
5659794 System architecture for improved network input/output processing  
A network input/output processing system for sending and receiving messages between a large scale computer system and associated communications networks. Executive operating system services...
5659776 Method and apparatus for inputting data to a single instruction, multiple data processor used in a television receiving system  
A single-instruction multiple-data processor (10) has an input layer especially designed for high data input and output rates. The processor (10) has a number of processing elements (20), each...
5659799 System for controlling disk drive by varying disk rotation speed when buffered data is above high or below low threshold for predetermined damping period  
A disk drive motor control system which dynamically varies the speed of the motor in accordance with the desired data transfer rate is provided. This is accomplished by monitoring the transfer...
5659773 Personal computer with input/output subsystem  
This invention relates to personal computers, and to the handling of input/output signals exchanged between a microprocessor included within a personal computer and devices remote from the...
5655145 Peripheral interface circuit which snoops commands to determine when to perform DMA protocol translation  
A high performance Local Bus Peripheral Interface (LBPI) for a computer local bus and its high performance peripheral interface(s), using a pipelined architecture to increase the use of the...
5655151 DMA controller having a plurality of DMA channels each having multiple register sets storing different information controlling respective data transfer  
A direct memory access (DMA) controller is connected with the CPU bus of a computer system through a bus interface and also to an I/O bus, which is connectable to one or more I/O controllers. The...
5649232 Structure and method for multiple-level read buffer supporting optimal throttled read operations by regulating transfer rate  
A structure and a method are provided for refilling a block of memory words stored in a cache memory. The structure and method provide a read buffer to optimally match the processor speed with the...
5646610 Electric power control apparatus having chargeable protocol communications module  
A reconfigurable communications module for a Tap Changer or Voltage Regulator. Briefly stated, a communication module is rack insertable into a voltage regulator controller and has disposed...
5644782 System with virtual update capable read-only memory  
A system having a virtual update capable read-only memory, includes a data storage system (270), and a device driver (272) which interfaces with the data storage system (270). The data storage...
5644682 Method and system for incorporating indicia into a document generated by a computer application  
A method and system for incorporating additional indicia into a document generated by an off-the-shelf computer application without altering the source document or the application. A source...
5642497 Digital disk recorder using a port clock having parallel tracks along a timeline with each track representing an independently accessible media stream  
An application programming interface for a digital disk recorder uses a port to link resources together to form a multimedia recorder that emulates a tape recorder while retaining the flexibility...
5640598 Data transfer processing system  
A transfer processing procedure comprising instruction words is inputted from an external to a program storing area of a DMA processing unit 40 whose functions are arranged to correspond to...
5638535 Method and apparatus for providing flow control with lying for input/output operations in a computer system  
A flow control circuit for a computer system including a first-in first-out buffer including a register for storing a value indicating the number of stages of the FIFO which are available to store...
5638538 Turbotable: apparatus for directing address and commands between multiple consumers on a node coupled to a pipelined system bus  
A command queueing apparatus for directing address and command information amongst the various interfaces, or consumers, on a multi-CPU node in a computer system. The apparatus includes a core...
5633890 Method for intelligent data terminal equipment (DTE) data communication  
Method for two-way digital communication between Data Terminal Equipment (DTE) and Data Communication Equipment (DCE), includes a novel command set. The inventive method involves initiating...
5630059 Expedited message transfer in a multi-nodal data processing system  
A multi-nodal computing system is connected by a communication network. A first node of the multi-nodal system includes apparatus for transmitting an information transfer request to a second node,...
5628027 Method of determining the configuration of devices installed on a computer bus  
A method where at power-on and before loading an option ROM the DMA and interrupt controller register values are saved. After option ROM initialization current DMA and interrupt controller...
5628026 Multi-dimensional data transfer in a data processing system and method therefor  
To execute a three-dimensional DMA transfer, a transfer counter register (76), which is partitioned into three sections, is loaded with initial counter values. Each section of the counter register...
5623611 Data processing apparatus having a bidirectional interface with receiving buffers, three-state buffers, and enable terminals for automatically switching the direction of data transmission and reception  
A data processing apparatus having a bidirectional interface which usually remains in a receiving mode during operation ready to receive data signals from an external device over a receiving data...
5619659 System for extending ISA bus without using dedicated device driver software by using E2 P2 interface which provides multiplexed bus signal through standard parallel port connector  
A bus interface system for expanding the I/O capability of a portable computer utilizes a parallel port connector with master interface circuitry connected to the internal ISA I/O bus of the...
5615388 IC card reader/writer  
In an IC card reader/writer of the present invention including a control section for controlling a power supply to a detachable IC card, a supply of an operation clock, a reset thereof, and an I/O...
5613074 Automatic disabling of SCSI bus terminators  
A system for detecting the presence and size of a SCSI device on a SCSI bus and terminating the SCSI bus accordingly. A SCSI controller is capable of driving two branches of a SCSI bus, each...
5613157 Address range extension for a modular computer  
A system and method for accessing a multiplicity of memory devices connected to a serial bus of defined protocol and which a direct memory device selection range smaller than the number of memory...
5613153 Coherency and synchronization mechanisms for I/O channel controllers in a data processing system  
An I/O channel controller implements coherency and synchronization mechanisms, which allow the I/O channel controller to provide fully coherent direct memory access operations on a multiprocessor...
5613163 Method and system for predefined suspension and resumption control over I/O programs  
Execution of input/output operations is controlled by one or more suspend and/or resume mechanisms. Suspension of an input/output operation is accomplished by one of a number of mechanisms...
5613154 System and method for management of transient data storage mediums in an automated data storage library  
A system and method for processing data storage mediums (DSMs) that are not stored in an automated data storage library on medium drive devices that are part of the library. An input station used...
5610809 Programmable controller and program capacity changing method thereof  
A programmable controller comprises a user memory in which a plurality of programs each divided to functional blocks or data are stored as files and a user memory management table in which data on...
5608887 Method of processing data strings  
A data processor processes data strings from memory where the data strings do not begin or end at a memory boundary. A string is defined in memory by a starting address, a byte count defining the...
5604914 Communication device for use with a factory automation network having multiple stations for accessing a factory automated device using address variables specific to the factory automated device  
In an automated factory environment which uses a plurality of stations, each having a communication device that incorporates the Manufacturing Message Specification (MSS) and is joined with other...
5603003 High speed file access control method and computer system including a plurality of storage subsystems connected on a bus  
In a computer system having an interface with an I/O bus given disconnect/reconnect functions and a plurality of magnetic disk subsystems connected with the I/O bus, control divides a file at a...
5600793 Method and system of bi-directional parallel port data transfer between data processing systems  
A method and system are described for bi-directional data transfer between a parallel port of a first (sending) data processing system and a parallel port of a second (receiving) data processing...
5594921 Authentication of users with dynamically configurable protocol stack  
On a multi-node client server network, a client node obtains access to remote services by means of a communications directory service located in each node of the network. The communications...
5594920 Point-of-sale terminal and printing apparatus therefor  
A point-of-sale (POS) terminal is provided with a control device for sending control and/or print data to a printing apparatus. The control device includes a general purpose processor controlled...
5592684 Store queue including a byte order tracking mechanism for maintaining data coherency  
A store queue is provided that forms an interface between a primary bus and a secondary bus and which temporarily stores data to be written via a memory or I/O channel to a peripheral device. The...
5590371 Serial communication circuit on an LSI chip and communicating with another microcomputer on the chip  
A serial communication circuit which is so configured that the sub CPU SC determines a timing of bit formats with software, specificially, that the sub CPU SC controls a level of each section or...
5586317 Method and apparatus for implementing I/O in a frame-based computer system  
A method for implementing I/O in a frame-based computer system, including the steps of: a) determining whether there is a communication pertaining to a frame-based computer system; b) determining...
5584039 System for coordinating execution of multiple concurrent channel programs without host processor involvement using suspend and resume commands to control data transfer between I/O devices  
Coupling execution of channel programs without central processing unit supervision controls data transfer between input/output devices through a main storage of a data processing system. In one...
5574946 Data transmission system using independent adaptation processes associated with storage unit types for directly converting operating system requests to SCSI commands  
A data transmission system between a computer bus and a large number of data storage units connected to one another by a specific connection to which the system is physically connected, including...
5574943 Gate-A20 and CPU reset circuit for mircroprocessor-based computer system  
A computer system includes a chipset which controls the gate-A20 signal and the CPU RESET signal in a conventional manner in response to commands from a system microprocessor. The computer system...
5572672 Method and apparatus for monitoring data processing system resources in real-time  
A graphical system resource monitor is provided to depict, in real-time, a data processing system's internal resource utilization. A window or viewport of a data processing system displays user...
5564057 Microprocessor architecture which facilitates input/output utilizing pairs of registers which the same address  
In processors with a reduced set of instructions the operands are derived from registers or as by a directly indicated number from a section of the instruction word, the operation result being...
5561823 Monitor system for determining the available capacity of a READ buffer and a WRITE buffer in a disk drive system  
A data buffer monitor apparatus which monitors the space availability in WRITE buffer and the number of sectors available for transfer in the READ buffer and generates the OK TO TRANSFER signal....
5561812 Data transmission system for transferring data between a computer bus and a network using a plurality of command files to reduce interruptions between microprocessors  
A data transmission system coupled between a computer bus (PBS) and a network (RE) includes a coupling device (GPU) linked to the bus and communicating by an interface with an adapter device (DEA)...