"That’s an amazing invention, but who would ever want to use one of them?"
President Rutherford B. Hayes ; Said in 1876, after Alexander Graham Bell demonstrated the telephone to him at the White House
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| Number | Title | Issue Date |
| 4719993 | Control apparatus for elevator In a case where peculiar control information which differs depending upon buildings is revised, a first memory for storing the revised information and a second memory for storing the original information before the revision are disposed, and addresses and... | 01/19/1988 |
| 4705552 | Glassware forming apparatus with distributed control An improved electronic control system for glassware forming apparatus having a heirarchy of machine level supervisory controllers (including a machine controller and an operator communications controller), section controllers, and individual mechanism con... | 11/10/1987 |
| 4703421 | Ready line synchronization circuit for use in a duplicated computer system A synchronizing circuit synchronizes the asynchronous ready signals for two separate microprocessor subsystems that are running synchronously as part of a fault tolerant computer system. Duplicated synchronization circuits, confined in a master-slave arra... | 10/27/1987 |
| 4684862 | Control apparatus for a multiple-axis machine tool An apparatus for controlling the motion of machine tool components about or along respective axes comprises a plurality of structurally identical processors each capable of controlling one complex motion or a plurality of simple motions. Each processor re... | 08/04/1987 |
| 4672530 | Distributed control with universal program A distributed control system controlling a plurality of subprocesses wherein each of the process control computers (44, 46, 48) executes a preprogrammed set of instructions (50-62) identical to the preprogrammed set of instructions (50-62) in the other pr... | 06/09/1987 |
| 4665556 | Image signal processor A high speed, multi-function and expandable image processing LSI (image signal processor) for realizing a gray level image processing technique is disclosed. The architecture of the image signal processor can process a gray level image having 256 tones at... | 05/12/1987 |
| 4644461 | Dynamic activity-creating data-driven computer architecture A computer architecture wherein data inputs causes the dynamic creation of appropriate activities employing stored functions as necessary to accomplish the desired end result for the data. The architecture employs a large scale multi-processing environmen... | 02/17/1987 |
| 4631722 | Electronic controller for cyclically operating machinery An electronic controller with safety facilities for a device with mechanical motion sequences with two differently designed safety channels, of which the first safety channel is constructed with hard-wired switching logic and the second according to micro... | 12/23/1986 |
| 4607256 | Plant management system A plant management system is provided. The system includes one or more digital process control and data acquisition subsystems and a plant control network. Each control subsystem includes a data highway, and process control, and process interface units. T... | 08/19/1986 |
| 4591977 | Plurality of processors where access to the common memory requires only a single clock interval A multi-microprocessor apparatus utilizing a plurality of central processing units arranged in a parallel configuration. Each central processing unit which has its own local memory unit, communicates with a common memory unit on a time shared basis that i... | 05/27/1986 |
| 4562528 | Backup control apparatus A backup control apparatus comprises a main control system (1) and a backup control system (2), coupled in parallel, and correcting circuits (61 to 64). If and when the main control system is in an abnormal state, the abnormal state of the main control sy... | 12/31/1985 |
| 4558416 | Method for maintaining the integrity of a dual microprocessor multiprocessing computing system A dual microprocessor computing system is used to control an engine in a motor vehicle. Each system contains a Personality Programmable Read Only Memory (PPROM) containing system calibration data that is transferred from the PPROM to the read-write memori... | 12/10/1985 |
| 4556943 | Multiprocessing microprocessor based engine control system for an internal combustion engine A multiprocessing microprocessor based engine control system for an internal combustion engine controls the amount of fuel supplied to the engine. The various input-output devices used in engine operation, transmission control 20, spark advance control 22... | 12/03/1985 |
| 4556955 | Single crystal dual microprocessor computing system A single crystal (100) dual microprocessor (26, 28) computing system utilizes a single frequency determining element (100) connected across the input pins of one of the microprocessors (26) and the output (102) of the element is connected to one input pin... | 12/03/1985 |
| 4351025 | Parallel digital computer architecture A parallel digital computer with which real-time simulations can be performed. A multiplicity of elemental computers are joined in a parallel architecture through a master computer and shared memory system. Real-time operation of the elemental computers a... | 09/21/1982 |
| 4253148 | Distributed single board computer industrial control system An industrial control system in accordance with the present invention is provided with a plurality of diverse controlled devices (e.g., fans, pumps, valves, solenoids, relays, etc.) for effecting overall system control. Each device has a unique set of log... | 02/24/1981 |
| 4217486 | Digital flight guidance system A digital flight guidance system includes a pair of processors, each with its own memory means and arranged with common input and output means for providing monitored guidance of an aircraft when the craft is in cruise modes or when the craft is performin... | 08/12/1980 |
| 4198678 | Vehicle control unit A vehicle control unit for a short-distance traffic system is disclosed wherein a plurality of vehicles are controlled from a center. Each vehicle carries at least two on-board computers each of which process the control commands coming from the center to... | 04/15/1980 |
| 4156798 | Small packet communication network A highly efficient and modular communication network includes a small number of different exchange units including a network controller exchange unit, line master exchange units, line exchange units and terminal exchange units. For high volume, low cost m... | 05/29/1979 |
| 4153198 | Electro-hydraulic governor employing duplex digital controller system An electro-hydraulic governer employing a duplex digital controller system for the optimum speed control of a steam turbine running with increasing speed in the starting stage or under load. Each of the digital controllers is operable with both a control ... | 05/08/1979 |
| 4115847 | Automatic flight control system with operatively monitored digital computer A dual channel, fail-operative automatic flight control system is disclosed in which each channel includes a totally monitored digital computer for operating upon sensor input data to provide command signals to the aircraft surface control actuators. The ... | 09/19/1978 |
| 4058711 | Asynchronous dual function multiprocessor machine control A multiprocessor system is disclosed for controlling a cycle of operation of a machine. The cycle of operation of the machine is governed by a first set of devices and is monitored by a second set of devices. The multiprocessor system includes a logic pro... | 11/15/1977 |