Did You Know...
...that one person who claimed to be the inventor of the television is Russian emigre Vladimir Zworykin? In 1929 David Sarnoff, founder of RCA, asked Zworykin what it would take to develop TV for commercial use. He said: a year and a half and $100,000. In reality, it took 20 years and $50 million! Before his death in 1982 at the age of 92, Zworykin said of his invention: "The technique is wonderful. It is beyond my expectations. But the programs! I would never let my children even come close to this thing."
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| Number | Title | Issue Date |
| 7428452 | Scheduling method and system for rail networks A method and system for calculating a plan for moving trains on a network to reduce the cost of delays or late running. The method and system can be used to develop a timetable for real time dynamic rescheduling of trains on a network and for assessing proposed chan... | 09/23/2008 |
| 7395140 | Geographic information system and method for monitoring dynamic train positions A geographic information system (GIS) displays geographic roadway data, geographic track data and geographic train position data. The GIS includes a GIS database having static roadway and track data. A computer aided dispatching (CAD) system includes a task to deter... | 07/01/2008 |
| 7152076 | System and method for efficient multi-master replication Each replica in a group of replicas of a data set is assigned a unique identifier and maintains an independent counter. When a change is made to an element in the data set, a change bucket, is assigned to the changed data element. The change bucket includes the iden... | 12/19/2006 |
| 7089093 | Method and apparatus for controlling trains, in particular a method and apparatus of the ERTMS type The invention relates to a method and apparatus for controlling trains, in which method and apparatus, the location and the speed of a train on the line are acquired. A location specification is generated as a function of the acquisition, so that a movement control ... | 08/08/2006 |
| 7027897 | Apparatus and method for suppressing mechanical resonance in a mass transit vehicle A mass transit vehicle traction motor control system includes an automatic control block for receiving and processing a tachometer signal having a first resonance signal superimposed thereon to produce a rate request signal having a corresponding second resonance si... | 04/11/2006 |
| 7006957 | Locomotive parking management tool A system for managing locomotives in a railyard including a parking yard and a service yard, based on possible future states of the parking yard and the service yard. The system includes a computer and utilizes an algorithm that enumerates possible present locomotiv... | 02/28/2006 |
| 6980894 | Method of managing interference during delay recovery on a train system The present invention provides methods for preventing low train voltages and managing interference, thereby improving the efficiency, reliability, and passenger comfort associated with commuter trains. An algorithm implementing neural network technology is used to p... | 12/27/2005 |
| 6977587 | Location aware device A device having a signal module configured to transmit a first type of signal and a second type of signal and to receive the first type of signal and the second type of signal. The device also includes a timer and a controller configured to operate the signal module... | 12/20/2005 |
| 6903658 | Method and system for ensuring that a train operator remains alert during operation of the train A train control system requires a train operator to enter signal aspect information at each wayside signal position on a railroad and stops the train if the operator fails to enter aspect information without communicating with the wayside signal device to verify tha... | 06/07/2005 |
| 6789005 | Method and apparatus of monitoring a railroad hump yard A method of monitoring a railroad hump yard, including storing a profile of the hump yard. The commands sent to one or more of the retarding devices and track switches are determined. The telemetry of a car at at least one point after release over the hump is obtain... | 09/07/2004 |
| 6732023 | Train control method and apparatus A train control method and apparatus for controlling the movement of trains with high safety by detecting trains on sections of track by an electronic blocking system. A wayside communication element (wayside transponder) 5 is placed in each block sect... | 05/04/2004 |
| 6490523 | Methods and apparatus for locomotive tracking A method and apparatus for managing locomotives is provided. The apparatus includes an on-board tracking system including a locomotive interface, a computer, a GPS receiver, and a communicator, the computer programmed to determine a position of the locomo... | 12/03/2002 |
| 6446912 | Railcar maintenance management method The present invention relates to a system and a method for managing the repairing, cleaning, painting, or otherwise maintaining of railcars within a railcar maintenance facility. Specifically, the present invention relates to a railcar maintenance managem... | 09/10/2002 |
| 6377877 | Method of determining railyard status using locomotive location A system for determining the status of a railyard includes a locomotive itinerary, a computer configured with a comparator algorithm used to compare a locomotive location to the locomotive itinerary, and at least one manager console configured to communic... | 04/23/2002 |
| 6374165 | Railway information transmission method and system In a railway information transmission method and system wherein information is transmitted by a consecutive transmission mode between on-vehicle control equipment and ground control equipment, a redundant code which is updated in accordance with a predete... | 04/16/2002 |
| 6230086 | Railway information transmission method and system In a railway information transmission method and system wherein information is transmitted by a consecutive transmission mode between on-vehicle control equipment and ground control equipment, a redundant code which is updated in accordance with a predete... | 05/08/2001 |
| 6109568 | Control system and method for moving multiple automated vehicles along a monorail The monorail system of the present invention contains a monorail and a system controller that has a first radio frequency ethernet communications device. Location markers are attached to the monorail. A vehicle is positioned to move on the monorail. The v... | 08/29/2000 |
| 6029103 | Method of checking train-announcement data sets via a composition of a vehicle At least one individual car that can be identified individually is contained in the consist. The configuration of an actually observed consist is determined and checked to see whether it matches relevant information data sets. If there is an exact match w... | 02/22/2000 |
| 5794172 | Scheduling system and method A scheduling system and method for moving plural objects through a multipath system described as a freight railway scheduling system. The achievable movement plan can be used to assist in the control of, or to automatically control, the movement of trains... | 08/11/1998 |
| 5758848 | Automatic switching system for track-bound freight cars An automatic switching system integrated into freight cars includes a microcomputer for controlling the automatic system and regulating the shunting speed, a rotary pulse generator for determining the shunting distance and freight car speed, distance sens... | 06/02/1998 |
| 5651517 | Automatic train serialization utilizing comparison between a measured parameter and a synchronization signal A method of serialization including providing a parameter which varies along the length of the train and transmitting a synchronization signal along the length of the train to the local nodes at each car. The parameter is measured at each node with respec... | 07/29/1997 |
| 5623413 | Scheduling system and method A scheduling system and method for moving plural objects through a multipath system described as a freight railway scheduling system. The achievable movement plan can be used to assist in the control of, or to automatically control, the movement of trains... | 04/22/1997 |
| 4883245 | Transporation system and method of operation A transportation system and method of operation are disclosed wherein a network of nodes, such as railway stations, are defined between which relays, such as freight trains, are operated at a selected cue frequency to thereby provide regular and predeterm... | 11/28/1989 |
| 4610206 | Micro controlled classification yard A modular control system for a railroad classification yard is described. The control system can automatically perform those functions necessary to control the various elements of a railroad classification yard to enable the train of cars to be switched f... | 09/09/1986 |
| 4307859 | Automatic message announcement system An automatic message announcement system for trains in the railroad station premises, including a train tracking circuit which tracks the location of approaching train, a trains information memory which stores information concerning each train, an edition... | 12/29/1981 |
