| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 340929000 | Indication of time remaining before change of phase | 10 |
| 20080272936 | Multipurpose Led Signal System for Pedestrian & Traffic Control - This invention relates to provide a pedestrian signal system not only for the normal pedestrian but also for the blinds, the disabled person of weak sight, and the illiterates by displaying the remaining time of each signal change in image figures at the signal head and by generating voice signal in real time. It reduces the cost of the system fabrication, installation and maintenance of the system by combining the five functions of the pedestrian signals such as a walk signal, a stop signal, a remaining time of each signal of red/green and/or the voice generator for blinds in a one signal head. Also, this invention provides the useful double safety traffic signal system especially for a school zone by installing LED studs on the stop line at crossroad for warning to drivers by blinking the LED studs automatically when the walk signal is on-mode. | 11-06-2008 |
| 20090135024 | DISPLAY CONTROL SYSTEM OF TRAFFIC LIGHT AND DISPLAY METHOD - Provided are a traffic light display control system and a display method thereof capable of accurately predicting a warning from a yellow light as a signal for alerting drivers to a residual time of a green light and a prepare-to-stop light, and providing traffic instruction. The traffic light display control system, which is controlled by a central control station for controlling display of a traffic light installed at each road, includes: an auxiliary traffic light as a first display part; a main traffic light as a second display part used in a conventional traffic light system; a memory part for storing a command value for turning ON and OFF each display lamp of the auxiliary traffic light and the main traffic light at predetermined time intervals; and a controller for controlling to turn ON and OFF the auxiliary traffic light and the main traffic light at pre-determined time intervals depending on the command value stored in the memory part, wherein the auxiliary traffic light is installed over the main traffic light, the auxiliary traffic light comprising first to fifth display lamps, and the first to fifth display lamps are sequentially changed from green into yellow to block entry of a vehicle into a crossroad. | 05-28-2009 |
| 20100117861 | Self scheduling flow system with readout as infrastructure - An invention regarding traffic flow management “Fast Lane On Warning” (FLOW) is disclosed whereby individual vehicles are informed and told what speed to go in order to pass through a traffic signal while the light is green. A FLOW (“fast lane on warning”) director sequencer works in conjunction with a traffic signal sequencer (commonly known in the art), both of which have the same service cycle period Pi. The (RGY) type phases and FLOW readout phases are set for each unique particular intersection. While the traffic sequencer controls repeating RGY cycles, the flow director sequencer instructs, generates, transmits repeating cycles of changeable readouts on one or more roadside unit (RSU) emplacements positioned up the road from the traffic signal for one or more lanes in one or more directions. These changing speed assignments or readouts, individually perceived by motorists, guide in motorists such that by the time they pass through the intersection, they will do so while the traffic signal is green, regardless of any random pattern of traffic individual motorists may have been in as they approached the emplacements. | 05-13-2010 |
| 20100259419 | STOPLIGHT TIMER - In combination with a standard traffic control signal having green, yellow and red lights disposed therein and lit in sequence for control of traffic, the improvement comprises an apparatus for providing a warning to drivers as to when a green light on a standard traffic signal will be changing to yellow. The apparatus comprises a countdown timer member disposed one of adjacent to and within such green light of such traffic signal for counting down a predetermined number of seconds before such green light turns to yellow and a countdown display monitor disposed one of in and adjacent to such timer member for displaying final seconds before such green light turns to yellow. | 10-14-2010 |
| 20110133955 | Traffic control system using multiple yellow lights to divide a cautionary signal into equal parts - A traffic control system for controlling vehicular traffic flow at intersections in which the conventional red/yellow/green three-light traffic signal that informs a motorist to stop, prepare to stop, and go is supplemented with multiple yellow light signals which are integrated as part of the traffic light. The additional yellow light signals inform a motorist that they will have sufficient time to make a gradual normal stop at the intersection before the red stop light is switched on by dividing the duration of the yellow cautionary signal into multiple yellow light signals. | 06-09-2011 |
| 20110133956 | DRIVE ASSIST DEVICE AND METHOD - A drive assist device and method capable of preventing the confusion of a driver at a traffic signal with an arrow lamp are provided. An ECU has a section for determining whether or not it is possible to pass a signal, which determines whether or not a vehicle can pass a signal, and a signal waiting time notification control section, which determines a signal waiting time of the vehicle and displays it on a display unit when the section for determining whether or not it is possible to pass a signal determines that the vehicle cannot pass a signal. The section for determining whether or not it is possible to pass a signal determines not only a lighting time of only a red signal but also a lighting time of a red signal and an arrow lamp and a lighting time of a yellow signal subsequent thereto are determined as a no-pass time. | 06-09-2011 |
| 20120026014 | System and Method for Traffic-Control Phase Change Warnings - A roadside equipment (RSE) system that can be used for controlling traffic signals and other equipment and corresponding method. A method includes maintaining a traffic signal in a GREEN phase in a first direction, including displaying a GREEN indicator in the first direction. The method includes detecting an event indicating that the phase of the traffic signal in the first direction should be changed and changing the phase of the traffic signal to a pre-YELLOW phase in response to the detected event, including continuing to display the GREEN indicator in the first direction. The method includes wirelessly transmitting a message indicating the pre-YELLOW phase and a phase time, the phase time indicating a next change of phase of the traffic signal, and changing the phase of the traffic signal to a YELLOW phase when the phase time has been reached. | 02-02-2012 |
| 20120146814 | APPARATUS AND METHOD FOR GUIDING INTERSECTION ENTRY AND STANDBY TIME - An apparatus for guiding an intersection entry and a standby time includes: a data receiver for receiving a control signal transmitted from an traffic signal control system; a vehicle travel information acquisition unit for acquiring a traveling direction and a travel speed of a vehicle; and a data analyzing unit for analyzing whether the vehicle can enter the intersection by analyzing position information and the traveling direction of the vehicle and the control signal to calculate an entry time into and a distance to the intersection or a standby time of the vehicle. The apparatus further includes a data output unit for providing whether to enter the intersection or the standby time of the vehicle to a driver of the vehicle. | 06-14-2012 |
| 20130127640 | DRIVE ASSIST DEVICE AND METHOD - A drive assist device and method capable of preventing the confusion of a driver at a traffic signal with an arrow lamp are provided. An ECU has a section for determining whether or not it is possible to pass a signal, which determines whether or not a vehicle can pass a signal, and a signal waiting time notification control section, which determines a signal waiting time of the vehicle and displays it on a display unit when the section for determining whether or not it is possible to pass a signal determines that the vehicle cannot pass a signal. The section for determining whether or not it is possible to pass a signal determines not only a lighting time of only a red signal but also a lighting time of a red signal and an arrow lamp and a lighting time of a yellow signal subsequent thereto are determined as a no-pass time. | 05-23-2013 |
| 20160133129 | TRAFFIC SIGNAL STATE DETECTION APPARATUS - A traffic signal state detection apparatus includes a first traffic signal information obtaining part that obtains first traffic signal information generated by a first infrastructure, a first output process part configured to calculate, based on the first traffic signal information from the first traffic signal information obtaining part, a second traffic signal information obtaining part that obtains second traffic signal information generated by a second infrastructure that is different from the first infrastructure, a second output process part that calculates, based on the second traffic signal information from the second traffic signal information obtaining part, and an output part that outputs one of the first and second remaining times in a situation where the first and second output demands are generated simultaneously, the output remaining time being related to one of the first and second output demands that is being continuously generated before the other is generated. | 05-12-2016 |
