Matches 301 - 347 out of 347 < 1 2 3 4 5 6 7
Match Document Document Title
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 asserted...
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 record...
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 program...
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 at...
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. A...
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 relative...
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 associated...
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...
4718064 Automatic test system  
An automatic test system for both production and trouble shooting evaluation of various computer peripheral controller devices. The automatic test system includes a central processing unit, a...
4710869 Key input data emulation system  
In a keyboard emulation system of the invention, a keyboard emulation circuit is inserted beteen two microprocessors. The keyboard emulation circuit generates a signal for sequentially scanning a...
4656580 Logic simulation machine  
An improved logic simulation machine in which non-unitary delays of logic functions being simulated are permitted and in which the delay time can be made different for low-to-high and high-to-low...
4642759 Bubble memory disk emulation system  
A magnetic bubble memory based floppy disk emulating system is provided which is capable of emulating available industry standard floppy disk drives with a simple, microprocessor controlled system...
4641263 Controller system or emulating local parallel minicomputer/printer interface and transferring serial data to remote line printer  
A remote line printer system is used for printing on a line-by-line printer at a remote location. Data stored in a minicomputer and fed in parallel format from a print port. The minicomputer, which...
4603385 Integrated data processing/text processing system having a terminal with dual emulation and enhanced function capabilities  
The present invention describes an integrated text and data processing system allowing processing of link data before output. The system also provides simultaneous dual emulation of a display and...
4574362 Block mode digital signal conditioning method and apparatus  
Block mode is a method of formatting data when sending it to and from the host computer. Some host computer operating systems make it difficult for the user's program to send or receive the full...
4511963 Emulation of special purpose magnetic tape data recording equipment by a general purpose processor  
Substitution of a general purpose data processing system for special purpose magnetic tape recording equipment, in certain existing network environments--one example being present telephone call...
4509122 Method for controlling the file transfer capability of an interactive text processing system that is emulating a host processing system terminal  
A method of transferring information between a host data processing system and the private storage media of an interactive text processing system, and the reverse, under control of the host while...
4453211 System bus for an emulated multichannel system  
A single synchronous system bus interconnecting a number of distributed processors which emulate multiple channels of a multichannel system. The system uses multichannel software and each channel...
4441154 Self-emulator microcomputer  
An electronic digital processor system including an internal memory, an arithmetic and logic unit, registers, peripheral control circuitry providing an internal mode, an external mode, emulator...
4365640 Equipment for smoking smokable objects  
An apparatus for simulating a human smoking a smokable object which comprises an inhaling device for drawing smoke from the object and a motor which is coupled to the inhaling device for driving...
4277827 Microprocessor based system for the development and emulation of programmable calculator control read only memory software  
A microprocessor based system for both creating and emulating control read only memories (CROM) for use in conjunction with programmable calculators and the like. The development system operates as...
4087794 Multi-level storage hierarchy emulation monitor  
A machine for emulating the results of multi-level storage hierarchies by providing an associative storage directory for each level other than main storage. Address sequences to drive the...
4068304 Storage hierarchy performance monitor  
A machine for emulating the results of multi-level storage hierarchies by providing an associative storage directory for each level other than main storage. Address sequences to drive the...
4053946 Modular programmable digital scan converter  
A digital scan converter which comprises modular video processing units and modular memory and output units is adapted for processing applied sensor data of various formats so as to provide output...
4031517 Emulation of target system interrupts through the use of counters  
A host system includes a plurality of memory cells, each reserved for a different one of a plurality of peripheral control devices of a target system. During the running of a target system program,...
3949380 Peripheral device reassignment control technique  
A plurality of peripheral devices having physical addresses are accessed by a host processor by use of logical addresses which are utilized by the various programs in a multiprocessing environment....
3714635 STANDARD ADAPTER METHOD AND APPARATUS  
An adapter unit for facilitating communication between a computer and any one of a number of different input/output devices to which the computer may be connected is disclosed. Each adapter unit...
Matches 301 - 347 out of 347 < 1 2 3 4 5 6 7