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5475836 Interface for providing access to external data sources/sinks  
An interface for enabling an application program to connect to a selected one or more of a plurality of external data sources/sinks, the application program running on a computer having active...
5473765 Apparatus for using flash memory as a floppy disk emulator in a computer system  
An apparatus for emulating a floppy disk drive using flash EPROMs. The apparatus transfers data between a floppy disk controller and a flash EPROM memory module, wherein the floppy disk controller...
5471606 Information storage and processing  
Data and directories are separated and stored on separate parts of an optical disk. Directories are on the inner tracks and data are on the outer tracks, in a first format. Data and directories...
5467432 Printer controller capable of operating with different operation modes based on mode-determinative codes stored in point-table memory  
A printer controller capable of emulating two or more types of printers which operate in different operation modes, the emulator being operable according to each batch of print data in selected a...
5465364 Method and system for providing device driver support which is independent of changeable characteristics of devices and operating systems  
A program arrangement presently disclosed provides support within an operating system for a commonly used class of peripheral devices (e.g. mouse devices or, more generally, pointing devices)....
5461488 Computerized facsimile (FAX) system and method of operation  
A fax system is automated herein by using a modem (10), a computer (12), and an office network which coupled the computer (12) to a plurality of end-user computers (26). A fax is received by the...
5461719 Method for recording/reproducing information on recording medium in accordance with parameters stored in memory to allow sectors of different data capacities to collectively exist  
Either one of recording or reproduction of data is effected by use of an information processing system that includes a recording/reproducing apparatus for effecting at least one of recording of...
5459850 Flash solid state drive that emulates a disk drive and stores variable length and fixed lenth data blocks  
A flash solid state drive, having a flash solid state memory compatible with ATA/IDE Interface standards to be connected to a host for storing or retrieving sectors of data, where each sector...
5457784 Interfacing system using an auto-adapting multi-ported control module between an i/o port and a plurality of peripheral adaptors via bus extending cables  
A self-adapting interface assembly on a data processor allows communication with a variety of other data processing devices operating under different communication protocols. The assembly...
5457785 CPU-independent and device-driver transparent system for translating a computer's internal bus signals onto an intermediate bus and further translating onto an expansion bus  
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...
5454098 Method of emulating access to a sequential access data storage device while actually using a random access storage device  
A method of emulating a sequential data storage device on a random access device to permit the transfer of information in a sequential format between a host computer and a random access storage...
5452287 Method of negotiation of protocols, classes, and options in computer and communication networks providing mixed packet, frame, cell, and circuit services  
The network negotiates user protocols, classes, and options between a calling user and a called user using the results to determine an optimal method of user information transport. A strategy for...
5450571 Dialog filtering process for a printing system to filter out non-selectable print programming selections  
A network printing system have plural printers for making prints, with some of the printers having different job processing capabilities; plural client inputs providing electronic documents and...
5430863 Interface system for coupling two computer environments  
A computer interface is provided for communication between a first computer environment and a second computer environment. The interface includes an input for receiving information from the first...
5410680 Solid state memory device having serial input/output  
A magnetic media hard disk is emulated in a solid state hard disk having a disk controller, a data buffer, a microcontroller, and a disk emulator section. The disk emulator section includes a disk...
5359726 Ferroelectric storage device used in place of a rotating disk drive unit in a computer system  
A method and apparatus are disclosed for emulating a rotating disk drive using a removable ferroelectric solid state storage device in a microprocessor controlled storage system. The removable...
5349675 System for directly displaying remote screen information and providing simulated keyboard input by exchanging high level commands  
A computer network has a first computer which is locally coupled to a second computer. The first computer controls operation of the second computer according to a plurality of high level commands...
5335340 Byte-swap hardware simulator for a sixteen bit microprocessor coupled to an eight bit peripheral unit  
An arrangement for enabling a sixteen bit microprocessor to transfer data to and from a peripheral unit operating in an eight bit mode includes a single OR gate for simulating an odd address so...
5333286 Two way copier monitoring system  
A system for automatically, remotely monitoring the operational status of and initiating operational commands in one or more copy machines each having a copier computer therein for determining...
5327549 Data storage system including a BIOS extension memory on an adapter between a host computer and disk drive  
A data storage system includes a disc drive accessing system for accessing an entire storage capacity of a disk. The disk drive to be accessed is identified and address parameters for the disk are...
5319767 Slave controller for effecting a block transfer of sixteen bit words between a memory and a data transfer bus  
A slave controller with block transfer capability for transferring data blocks of between one and two hundred fifty six sixteen bit words between a memory and the VERSA MODULE EUROPE bus (VMEbus)....
5317719 System for forming serial M-bit information into blocks whose locations correspond to bitmap locations  
A circuit is provided for forming fixed length blocks of information units received from one network for transfer to another. The actual information from each serially received information unit is...
5313617 Multi-disc optical data storage system for use with a host computer for emulating a magnetic disc device  
A data storage system comprises a magnetic disk, an optical disk, optical disk drive units, and optical disk transport devices for transporting the optical disk to the optical disk drive units as...
5307476 Floppy disk controller with DMA verify operations  
The present invention includes two variations of an apparatus which generate a version of the IORC* bus signal that is supplied to the read strobe input of a floppy disk controller that is...
5303349 Interface for establishing a number of consecutive time frames of bidirectional command and data block communication between a Host's standard parallel port and a peripheral device  
A computer interface having time frame dependent functional designation of parallel port lines system. A communication cycle is established with a plurality of time frames for a group of parallel...
5301304 Emulating records in one record format in another record format  
Count, key, data (CKD) datas are stored on fixed block (FBA) disk recorders (DASD). A virtual track is created which emulates a physical CKD track such that the byte displacement of each CKD...
5291584 Methods and apparatus for hard disk emulation  
A magnetic media hard disk is emulated in a solid state hard disk having a disk controller, a data buffer, a microcontroller, and a disk emulator section. The disk emulator section includes a disk...
5278974 Method and apparatus for the dynamic adjustment of data transfer timing to equalize the bandwidths of two buses in a computer system having different bandwidths  
The bandwidth of a first bus and a second bus, unequal due to differences in protocol overheads and cycle times between the buses, are equalized without sacrificing any bandwidth on the lower...
5276811 Method for emulating programmable logic controller by exchanging information between debug program which emulates I/O devices and ladder logic program  
The present invention discloses a software package for developing ladder logic programs for Programmable Logic Controllers (PLCs). The present invention provides a method of troubleshooting ladder...
5269011 Dynamically reconfigurable data storage system with storage system controllers selectively operable as channel adapters on storage device adapters  
A dynamically reconfigurable data storage system includes a plurality of storage system controllers, each of which is selectively operable at any given time as one of a channel adapter and a...
5261079 Interface for keyboard emulation provided by an operating system  
A computer system includes a keyboard which includes cooperatively operating therewith a keyboard device driver to enable the keyboard to interface with an operating system and applications...
5239659 Phantom duplex copy group apparatus for a disk drive array data storge subsystem  
This apparatus makes use of a disk drive array to store data records for an associated host processor. This disk drive array emulates the operation of a large form factor disk drive by using a...
5230065 Apparatus and method for a data processing system having a peer relationship among a plurality of central processing units  
A data processing system is disclosed in which a plurality of central processing units have access to all the system resources, i.e., have a peer relationship. During initialization of the data...
5218686 Combined synchronous and asynchronous memory controller  
A memory controller has an asynchronous portion and a synchronous portion. The synchronous portion is used when the system processor is accessing the memory, while the asynchronous portion is used...
5218691 Disk emulation system  
Disclosed is a solid state disk emulator system for significantly improving access time, i.e., improving both the seek time and the rotational latency. The disk emulator complies with the SMD...
5214785 Controller with keyboard emulation capability for control of host computer operation  
A microcontroller peripheral system is interfaced to the existing keyboard input of an unmodified host computer while supporting normal keyboard operation of the host. The controller is...
5202899 Apparatus for providing dynamic selection of modem protocol to support multiple modem types  
A computer is programmed in accordance with an algorithm which allows it to send a series of tentative unique initialization commands to a port which should be connected to a modem for the purpose...
5179690 System for display emulation by intercepting and changing control data stored in one of multiple temporary registers to suitable display control data  
A display emulating system in which control data for controlling a display are tentatively stored in a temporary register and modified to appropriate data suitable for the display, and then stored...
5159679 Computer system with high speed data transfer capabilities  
The present invention is a computer system which can perform master unit controlled memory accesses at a first rate, DMA controlled operations at a second rate and burst operations of both types...
5142469 Method for converting a programmable logic controller hardware configuration and corresponding control program for use on a first programmable logic controller to use on a second programmable logic controller  
A method is provided for converting a hardware configuration and corresponding control logic program for use on a first programmable logic controller (PLC) to an equivalent hardware configuration...
5131089 Solid state disk drive emulation  
A system for causing a computer solid state memory to emulate a magnetic disk mounted in a disk drive. In the preferred embodiment, the system includes two removable RAM cards and two ROM's....
5109503 Apparatus with reconfigurable counter includes memory for storing plurality of counter configuration files which respectively define plurality of predetermined counters  
A reconfigurable counter is provided which includes first and second memories coupled via a common bus to a microprocessor which controls the process of configuring and reconfiguring the counter....
5088033 Data processing system emulation in a window with a coprocessor and I/O emulation  
An emulating data processor includes a host system and an emulating processor with outputs to and inputs from the host system. The emulating processor executes sequences of instructions executable...
5038279 Direct hot-keying with reset of printer parameters for a secondary application including a typewriter emulator  
A computer system operating under software control to provide output to a printer for printing. The computer system sets printer parameters to accommodate different forms of output to the printer....
4975829 Communication interface protocol  
In a computer system (FIG. 1), targets (13) comprising peripheral devices (18) and target controllers (17) are connected to the host system by means of a device bus (12), illustratively the...
4958315 Solid state electronic emulator of a multiple track motor driven rotating magnetic memory  
A system for emulating the memory characteristics of a motor-driven rotat memory having multiple heads per track and/or single heads per track with odd modular memory lengths. It is intended as a...
4882671 Microprocessor controlled rigid disk file subsystem  
A control system for a micro-Winchester or smaller disk file includes head position control circuitry including at least one servo loop for controlling an electromechanical head positioner...
4875186 Peripheral emulation apparatus  
Control apparatus allows application software written for use with peripheral devices manufactured by one company to run with other peripheral devices. The apparatus intercepts device-specific...
4775953 Workstation with typewriter emulation  
A personal computer or workstation is provided with an arrangement whereby the workstation keyboard and printer can be made to emulate the operation of a standard typewriter. The printer...
4727512 Interface adaptor emulating magnetic tape drive  
A magnetic tape drive emulator provides interface compatibility between a computer system having an industry standard tape drive interface and a peripheral image acquisition processing system. The...