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| Number | Title | Issue Date |
| 8096387 | Fail-safe power control apparatus with controllable change-over switches A fail-safe power control apparatus for supplying power between an energy source and the motor of a transport system. The power control apparatus includes a power supply circuit, which has at least one converter containing controllable change-over switches, and the ... | 01/17/2012 |
| 7896135 | Fail-safe power control apparatus A fail-safe power control apparatus for supplying power between an energy source (4) and the motor (5) of a transport system is provided. The power control apparatus comprises a power supply circuit (6), which comprises at least one converter ( | 03/01/2011 |
| 7549513 | Control device of elevator for detecting abnormalities in a clock signal In an elevator control apparatus, calculations regarding the control of an elevator are performed in a duplexed system including first and second processing portions. A first clock signal from a first clock is input to the first processing portion. A second clock si... | 06/23/2009 |
| 7503432 | Elevator control using clock signal An elevator control device has: a processing portion for controlling an operation of an elevator based on a clock signal; and a detection portion for comparing the number of edges of the clock signal counted within a preset period of time with the preset number of e... | 03/17/2009 |
| 7438158 | Safety monitoring device with instantaneous speed determination for a lift car A safety monitoring device is provided for a lift car which can be moved in a lift shaft by a traction drive via a lift control system and whose instantaneous position can be registered by a position registering device which supplies two position signals, produced i... | 10/21/2008 |
| 7325657 | Elevator installation and monitoring system for an elevator installation An elevator installation with an elevator car moveable in an elevator hoistway by means a drive unit is controlled by a control unit. Sensors monitor the status of the elevator installation and are each connected via an assigned bus node to a data bus and thereby co... | 02/05/2008 |
| 7283936 | Field panel trending on event in a building control system A building control system, such as an HVAC system, has a field unit incorporating a control panel (a field panel) with a local user interface allowing user selected parameters for collecting trend information when the system detects a change of value for a point in ... | 10/16/2007 |
| 7237653 | Elevator controller Signals sent from detectors through input units are inputted to respective microcomputers. Microcomputers are synchronized with each other by an external clock, and execute input processing and arithmetic operation processing. In addition, a common memory is connect... | 07/03/2007 |
| 7178635 | Elevator control having independent safety circuits An elevator installation with at least one shaft having a plurality of shaft doors is provided. At least two cars disposed one above the other travel up and down in the shaft. Each car has at least one car door. A safety device is provided for blocking the travel of... | 02/20/2007 |
| 7117390 | Practical, redundant, failure-tolerant, self-reconfiguring embedded system architecture This invention relates to system architectures, specifically failure-tolerant and self-reconfiguring embedded system architectures. The invention provides both a method and architecture for redundancy. There can be redundancy in both software and hardware for multip... | 10/03/2006 |
| 7110919 | Field panel trending on event in a building control system A building control system, such as an HVAC system, has a field unit incorporating a control panel (a field panel) with a local user interface allowing user selected parameters for collecting trend information when the system detects a change of value for a point in ... | 09/19/2006 |
| 6996130 | Distributed control system and filtering method used in the distributed control system In a distributed control system in which a plurality of nodes are connected to a transmission line, each node controlling components connected to this node and transmitting a message to other nodes, a message sent by each node includes at least two message-sending c... | 02/07/2006 |
| 6961363 | Frequency look-ahead and link state history based scheduling in indoor wireless pico-cellular networks A method and apparatus of combating the problem of interference in master-slave time division duplex indoor wireless networks based on standards, such as the Bluetooth™ standard, is proposed. The method involves a frequency look-ahead scheme in frequency hopping s... | 11/01/2005 |
| 6957109 | Distributed control system and filtering method used in the distributed control system In a distributed control system in which a plurality of nodes are connected to a transmission line, each node controlling components connected to this node and transmitting a message to other nodes, a message sent by each node includes at least two message-sending c... | 10/18/2005 |
| 6931568 | Fail-over control in a computer system having redundant service processors A system and method for determining an active service processor from two or more redundant service processors in the system. The system typically includes two management modules and at least one managed subsystem such as a server blade. Each management module includ... | 08/16/2005 |
| 6173814 | Electronic safety system for elevators having a dual redundant safety bus In accordance with a preferred embodiment of the present invention, an electronic safety system for elevators for preventing unsafe elevator operation has a central controller which monitors a variety of sensors, contacts, and switches over an electronic ... | 01/16/2001 |
| 5936211 | Elevator control system The elevator control system includes a plurality of car controllers which control respective operations of a plurality of elevator cars, and at least one column of hall terminals. Each hall terminal in a column of hall terminals controls input/output oper... | 08/10/1999 |
| 5884729 | Apparatus and method for controlling a plurality of elevator cars An apparatus and method for controlling a plurality of elevator groups each of which has at least a pair of elevator cars. The apparatus includes a master car controller for collecting data from and controlling a plurality of hall calls, cage calls and mo... | 03/23/1999 |
| 5638295 | Transfer switch system with subnetwork A transfer switch system includes a controller which sends separately timed restart signals over a communications network to an addressable relay associated with each load in order to sequentially restart the loads following a transfer. When the loads are... | 06/10/1997 |
| 5387769 | Local area network between an elevator system building controller, group controller and car controller, using redundant communication links A LAN elevator network includes (a) a pair of redundant car buses for exchanging signals with car control system elements, (b) a pair of redundant group buses for exchanging signals with the redundant car buses through a car-group bridge, and (c) a pair o... | 02/07/1995 |
| 5360952 | Local area network eleveator communications network A LAN elevator network includes (a) a pair of redundant car buses for exchanging signals with car control system elements, (b) a pair of redundant group buses for exchanging signals with the redundant car buses by means of a car-group bridge, and (c) with... | 11/01/1994 |
| 5298696 | Elevator car assignment using a plurality of calculations An elevator group management system for managing a plurality of elevators is disclosed wherein the system comprises a plurality of control devices for executing overall assignment processes of the elevators in response to hall calls which take place on pa... | 03/29/1994 |
| 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 |
| 4567560 | Multiprocessor supervisory control for an elevator system An elevator system, and method of monitoring same, which includes a plurality of elevator cars under the group supervisory control of at least first and second processors, which all share a common memory over a system bus. The first processor periodically... | 01/28/1986 |
| 4473135 | Apparatus for controlling an elevator An apparatus for controlling an elevator, which comprises a managing first electronic computer for managing the service of the start and stop of an elevator cage and a controlling second electronic computer for controlling the speed of the cage in accorda... | 09/25/1984 |
| 4350225 | Elevator control system A control logic for an elevator servicing a plurality of floors of a building comprises two microcomputers. The two microcomputers are provided with abnormal state detectors of their own. When the abnormal state detector of one microcomputer is actuated, ... | 09/21/1982 |
| 4345670 | Elevator control system An elevator control system comprises a control unit for controlling at least one elevator in accordance with a first group of programs and a second group of programs to impart a plurality of functions to the elevator and a fault detection means for detect... | 08/24/1982 |
| 4326606 | Apparatus for controlling rescue operation of an elevator The operation control section of an elevator system is constituted of two computers one of which shares the processing function with the other. One of the computers has a means for detecting an abnormality occurring in the other computer and stores therei... | 04/27/1982 |
| 4308935 | Autonomous elevator cab operation An elevator includes a microprocessor-based cab controller mounted on the elevator car to monitor calls for service by passengers in the car, such as are registered on car call buttons requesting stops at specific floors, door open and door close buttons ... | 01/05/1982 |
| 4210226 | Elevator control apparatus An elevator control apparatus and stored program system comprises an auxiliary control device together with a main control device in which a control program is stored. In the normal state, the main control device is used whereas in a fault of the main con... | 07/01/1980 |
