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6055483 Systems and methods using bridge models to globally optimize a process facility  
A control system and a method of operating the same are introduced that globally optimize associated processes within a process facility. The control system includes a global controller, a bridge...
6047222 Process control network with redundant field devices and buses  
PCT No. PCT/US97/17983 Sec. 371 Date Dec. 30, 1997 Sec. 102(e) Date Dec. 30, 1997 PCT Filed Oct. 3, 1997 PCT Pub. No. WO96/12993 PCT Pub. Date May 2, 1996Functional elements within a two-wire,...
6044414 System for preventing a DMA controller from evaluating its DRQ input once a DMA operation has started until the DRQ input has been updated  
A computer system includes first and second integrated circuits. A direct memory access (DMA) controller circuit on the first integrated circuit receives a direct memory access request (DRQ) input...
6044410 System for data transfer where multi-word data transmission from industrial controller to I/O module is performed using I/O image table-based handshaking protocol  
A communication protocol employing dummy input and output values is used in communicating blocks of data between an industrial controller and its I/O modules while preventing premature use of...
6038684 System and method for diagnosing errors in a multiprocessor system  
A fault-tolerant computer architecture is described wherein the effect of hardware faults is diminished. The architecture employs a main data bus having a plurality of interface slots for...
6035240 Flexible distributed processing system for sensor data acquisition and control  
An all digital physical parameter sensing network. Sensors under control of a central computer measure factors such as temperature, pressure, flow rate, filter efficiency and the like at numerous...
6029122 Tempo synchronization system for a moving light assembly  
A time synchronizing unit operates to synchronize lamps with various indicia. Each of these indicia are tied to a system clock. The system clock is normally incremented at specified intervals,...
6029093 Control system for processing machinery including a bus converter for interfacing a controller and a sequencer having different bus specifications  
A control system for processing machinery has at least one sequencer for processing machines to each of which at least one processing machine is connected, a controller for controlling the...
6024477 Process and device for an accelerated execution of a program using a stored-program controller  
A process and a device for accelerated execution of a program by a stored-program controller (SPC) on a machine. The machine has actuators actuated by the SPC to perform machine actions and...
6021356 Control system using programmable logic controller  
A control system using a master programmable logic controller (PLC) which efficiently prevents the PLC system from performing an error operation caused by an abnormal state of a master PLC or a...
6006166 Apparatus for testing a controller with random constraints  
An apparatus for testing an IDE controller with random constraints, the apparatus including: an IDE controller module for simulating the IDE controller, wherein the IDE controller includes at...
6000825 Method and arrangement for a module which can be connected to a serial and digital network system  
An arrangement to control equipment over a common network. A serial network transfers commands, and receives data from a plurality of distributed locations. Equipment located at each location...
5997166 Redundant industrial controller storing module and chassis level redundancy status  
A redundant controller employs two controller chassis having replaceable functional modules interconnected electrically within the chassis. System back up modules in the chassis coordinate the...
5988846 Method of operating a drive system and device for carrying out the method  
A drive system and a method of operating such a system are specified. The drive system comprises at least two drive groups having a plurality of drive controllers of controlled drives. The drive...
5975736 Scrubber control system  
A control system. An apparatus having a motor; a host processor for generating a message containing motor control information; a control board for receiving the message and for transmitting a...
5971598 Wireless remote controlled tanning system  
A tanning system (14) is disclosed which allows a single centrally located control unit (10) to control a number of remote tanning beds. Each tanning bed is provided with a remote unit (12)...
5974136 Apparatus for electronic exchange having a general-purpose bus separating the exchange unit and control unit  
An electronic exchange apparatus where an exchange unit for controlling extension-line and trunk-line interface cards unique to the exchange apparatus is provided separately from a general-purpose...
5968150 Processor element having a plurality of CPUs for use in a multiple processor system  
A processor for constructing a single processor system or multiprocessor system comprises, within a base processor element constituting the processor, two CPU with associated local memories, a...
5966301 Redundant processor controller providing upgrade recovery  
An industrial controller provides a primary controller and a redundant secondary controller and allows switchover between the controllers in the event of a failure in the primary controller. The...
5963634 Method for warming up a spare process in a replicated real-time system, in particular in a telephone exchange  
The invention relates to a method for warming up a spare process in parallel with an active process in a replicated real-time switching system, in particular in a telephone exchange. The switching...
5931902 Communication system  
A communication system in which a master unit is connected to a slave unit executing initialization processing with a longer period of time for initialization as compared to that by the master...
5920715 System architecture permitting verified and unverified programs to execute safely on one processor  
A system architecture uses at least two processors (2, 3), which jointly control a process and constantly compare their data with each other. A program complex which has been checked with respect...
5910903 Method and apparatus for verifying, analyzing and optimizing a distributed simulation  
A method and apparatus for verifying, analyzing and optimizing a distributed simulation conducted on one or more simulation components from one or more control computers where the present...
5910046 Competition game apparatus  
An image display processor displays a real-time three-dimensional image including a player's automobile, a plurality of general automobiles, and a course established in a game space on a display...
5909369 Coordinating the states of a distributed finite state machine  
The states of a distributed finite state machine composed of a plurality of devices are coordinated by a sequence of operations to effect a self-timed cycle. Each device is arranged to apply a...
5907485 Method and apparatus for flow control in packet-switched computer system  
This invention describes a link-by-link flow control method for packet-switched uniprocessor and multiprocessor computer systems that maximizes system resource utilization and throughput, and...
5886894 Control system for automated security and control systems  
A security or automation system for domestic or business premises has plural units connected into a network by a communications bus, the units including one master unit and at least one user...
5884072 Networked facilities management system with updated data based on aging time  
A networked system having a wide variety of applications and particularly applicable to facilities management systems has multiple levels of software in processsing nodes. The levels include a...
5875328 Fault identifying control system  
Operation for each action of a machine is individually controlled by providing a file of set of components necessary to carry out the operation and a file of a set of components that are available...
5870301 System control apparatus including a master control unit and a slave control unit which maintain coherent information  
In the master control unit, updated information is transferred to a slave control unit and a coherence of information between the master control unit and the slave control unit is periodically...
5862048 Microprocessor based electro-pneumatic locomotive brake control and train monitoring system  
A computerized electro-pneumatic braking system that includes a train monitoring system. Preferably, the braking system control device is installed on all vehicles on the train. When braking is...
5856921 Apparatus and method for intermodular communications using system bus controllers  
A system bus architecture for intermodular communications is disclosed. The system bus architecture comprises a backplane bus with associated memory and a plurality of control registers. A master...
5850338 Numerical control system using a personal computer and a method of controlling the same  
A PLL circuit 31 of a pulse convert/output circuit 12 in an NC board A 1 receives a fundamental clock signal CLK through a PC extension bus 207 from a fundamental clock generating circuit 201, and...
5835370 Network having a control device and a plurality of slave devices and communication method using the same network  
A control device and a plurality of slave devices are connected to a common transmission channel. The control device sets an assigned communication mode by sending a receiving inhibit command to...
5832418 Apparatus for testing a controller with random contraints  
An apparatus for testing an IDE controller with random constraints, the apparatus including: an IDE controller module for simulating the IDE controller, wherein the IDE controller includes primary...
5831848 Distributed environmental process control system  
A process control system includes a high speed serial backbone communications network, interconnecting a plurality of microprocessor based nodes that each act as the master to a high speed serial...
5831849 Data control system  
In a data control system according to the present invention, a data storage unit such as a memory or a register of each slave apparatus receives supply of power from a first power source which...
5832397 Integrated wiring systems for a vehicle control system  
An integrated wiring system for controlling multiple vehicle systems comprising a plurality of terminal control units having different information processing speed and a central control unit. A...
5826060 Stimulated simulator for a distributed process control system  
A simulator for a distributed process control system utilizes a simulator station as an interface between a plant modeling computer and an instrumentation and control system which uses actual...
5813496 System for monitoring and control of the circulation lubrication of the bearings of cylinders and rolls in a paper machine  
A system for control and monitoring of the circulation lubrication of the bearings of the revolving cylinders and rolls in a paper machine or equivalent in which lubrication oil is fed from an...
5812390 Apparatus and method for message variable reordering  
A portable computer is provided in which message variable values provided for user messages can be readily reordered when different versions of the computer are produced to support respective...
5808885 Weld controller system for coupling to a common database system on a communication network  
A weld controller is coupled to a communications network which has an operator interface unit for monitoring and controlling the weld controller and other weld controllers on the network. A common...
5796604 System comprising a machine for the communication of pricing changes  
In a system comprising a communication machine in an installation and a plurality of devices distributed on an information transmission medium, said machine comprises means for the reception of...
5796352 Audio video equipment system with bus line and method of establishing a connection setting for the audio video equipment system  
An audio video (AV) equipment system with a bus line including read-only-memory (ROM) that stores a plurality of predetermined system configurations of AV component devices. The system includes a...
5794037 Direct access to slave processing by unprotected application using context saving and restoration  
A computer system provides multiple unprotected applications direct access to a slave processor. The host processor issues context switching requests to save and restore partially completed...
5790791 Apparatus for synchronizing flight management computers where only the computer chosen to be the master received pilot inputs and transfers the inputs to the spare  
A method and apparatus for choosing which flight management computer (FMC) of two FMCs will function as a master FMC (11) and which will function as a spare FMC (13) in maintaining data commonalty...
5777870 Drive control commanding unit, a synchronous contol system for a plurality of drive control commanding units, and a synchronous control method for the units  
A drive control commanding unit is provided which, when plural such units constitute a system, can configure the system as a synchronous system which can conduct a synchronous operation free from...
5769527 Computer controlled lighting system with distributed control resources  
A stage lighting system is comprised of a plurality of lamp units which may have diverse communication protocols, functions and data parameters. The stage lighting system is controlled by a...
5754780 Apparatus and method for performing serial communication between master and slave devices  
A communication method and apparatus for performing communication between a master device and a plurality of slave devices, prepares, in the master device, the address data of a destination and...
5751569 Geographic train control  
The invention relates to a method of controlling railroad train movement over a layout of railroad track that is defined geographically using a linear network of geographic control objects which...