Density Determines Split Patents (Class 340/922)
  • Patent number: 9483938
    Abstract: A diagnosis system for an adaptive signal control system in a network, the diagnosis system including a traffic state identification device configured to estimate a traffic state describing a supply-demand mismatch by identifying a relationship between real time data feed from a sensor and a control strategy of said adaptive signal control system and a network transition model device configured to diagnose the supply-demand mismatch and an evolution of the supply-demand mismatch on a network level based on said relationship and infrastructure data of the network.
    Type: Grant
    Filed: August 28, 2015
    Date of Patent: November 1, 2016
    Assignee: International Business Machines Corporation
    Inventors: Eric P. Bouillet, Thanh Lam Hoang, Rahul Nair, Alessandra Pascale
  • Patent number: 9430940
    Abstract: A regulation information analysis system determines transit regulations imposed on a target road or intersection to be analyzed based on probe information sent from a plurality of vehicles. An analysis terminal determines if transit regulations are in effect or not by detecting if the probe information indicating a transition that violates a method of transition to be analyzed, such as right/left turn prohibition is present at the target road or intersection. The analysis terminal determines, based on the geometric shape and the like of the target road or intersection, if there is an avoidance factor which a driver would desire to avoid transiting the target rode or intersection. The quantity of the probe information used for determining the presence or absence of the transit regulations is increased if the avoidance factor is found, whereby the determination accuracy is increased while the overall quantity of the probe information is suppressed.
    Type: Grant
    Filed: July 17, 2013
    Date of Patent: August 30, 2016
    Inventors: Hiroyuki Tashiro, Kei Hiroo, Yoshitaka Nishino, Motohiro Nakamura, Kazunori Watanabe, Sadahiro Koshiba, Kazuteru Maekawa
  • Patent number: 9197861
    Abstract: Video analytics is used to track an object of interest represented in video data representing the field of view of a scene observed by a video camera. A multi-dimensional virtual beam is used to detect whether the tracked object of interest is continually present in a detection zone within the field view of the scene. An occurrence of an event is signaled when the tracked object of interest is continually present in the detection zone during a period beginning when the tracked object of interest enters the detection zone and ending when the tracked object of interest leaves the detection zone through the opposite side, after having completely crossed through the detection zone. Use of a virtual beam detection zone reduces false alarms as compared to the numbers of incidences of false alarms of traditional detection methods, while adding several features and benefits.
    Type: Grant
    Filed: November 15, 2012
    Date of Patent: November 24, 2015
    Inventors: Mahesh Saptharishi, Douglas H. Marman
  • Publication number: 20140368358
    Abstract: Scalable urban traffic control system has been developed to address current challenges and offers a new approach to real-time, adaptive control of traffic signal networks. The methods and system described herein exploit a novel conceptualization of the signal network control problem as a decentralized process, where each intersection in the network independently and asynchronously solves a single-machine scheduling problem in a rolling horizon fashion to allocate green time to its local traffic, and intersections communicate planned outflows to their downstream neighbors to increase visibility of future incoming traffic and achieve coordinated behavior. The novel formulation of the intersection control problem as a single-machine scheduling problem abstracts flows of vehicles into clusters, which enables orders-of-magnitude speedup over previous time-based formulations and is what allows truly real-time (second-by-second) response to changing conditions.
    Type: Application
    Filed: June 18, 2014
    Publication date: December 18, 2014
    Applicant: CARNEGIE MELLON UNIVERSITY, a Pennsylvania Non-Profit Corporation
    Inventors: Xiao-Feng Xie, Stephen F. Smith, Gregory J. Barlow
  • Patent number: 8803705
    Abstract: A traffic management system includes a data processing unit which communicates with a road leading unit and a vehicle management unit. The road leading unit comprises a plurality of grooves and isolation railings, the grooves are formed on a road, and the isolation railings are received in the grooves and can be opened to divide the road. The data processing unit can receive vehicle identification information and driving direction information from the vehicle management unit. The data processing unit comprises a data analysis module and a control module. The data analysis module is operable to estimate road condition information and count a total traffic demand index for each road according to the vehicle identification information and the driving direction information. The control module is operable to control the isolation railings to open or retract according to the total traffic demand index.
    Type: Grant
    Filed: April 28, 2011
    Date of Patent: August 12, 2014
    Assignees: Shenzhen Futaihong Precision Industry Co., Ltd., FIH (Hong Kong) Limited
    Inventor: Jian-Hui Li
  • Patent number: 8111153
    Abstract: Provided are an apparatus and a method for providing position information and gathering information using Radio Frequency Identification (RFID). The apparatus includes: a plurality of RFID tags, driven by a radio frequency transmitted from an RFID reader installed in the vehicle, for providing stored tag information in order to provide current position information to the vehicle; a plurality of sensor nodes for sensing the time point when the RFID tags are driven and transmitting the sensed information through a sensor network; and an information gathering server for gathering and processing the information sensed by the sensor nodes, where at least two RFID tags and one sensor node are configured in groups, and the groups are installed at predetermined intervals on each lane of a road.
    Type: Grant
    Filed: October 12, 2007
    Date of Patent: February 7, 2012
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Min-Soo Kim, Eun-Kyu Lee, Yong-Joon Lee
  • Patent number: 8035530
    Abstract: A system and method for regulating the flow of traffic at a roadway intersection having one or more traffic signals by positioning a processor in the vicinity of the intersection to store cycle times of the traffic flow directions, mounting an RFID reader in the vicinity of each traffic signal in communication with the processor, interrogating with the RFID reader an RFID tag on each RFID-tagged vehicle at the roadway intersection to count the number of RFID-tagged vehicles present in each traffic flow direction at the roadway intersection, calculating an unused time slice of the cycle time for a first traffic flow direction at the intersection; reducing the cycle time for the first traffic flow direction in accordance with the unused time slice; and, increasing the cycle time for a second traffic flow direction at the intersection in accordance with the unused time slice.
    Type: Grant
    Filed: June 1, 2009
    Date of Patent: October 11, 2011
    Inventor: Sridhara Subbiah Ramasubbu
  • Patent number: 7557731
    Abstract: A system and method for regulating the flow of traffic at a roadway intersection having one or more traffic signals by positioning a processor in the vicinity of the intersection to store cycle times of the traffic flow directions, mounting an RFID reader in the vicinity of each traffic signal in communication with the processor, mounting a plurality of RFID tags in the vicinity of a license plate so as to be within the communication range of an RFID reader at the intersection and so that the RFID readers interrogate the RFID tags of the vehicles, calculating an unused time slice of the cycle time for at least one of the traffic flow directions at the intersection; and, reducing the cycle time for the traffic flow.
    Type: Grant
    Filed: November 9, 2006
    Date of Patent: July 7, 2009
    Inventor: Sridhara Subbiah Ramasubbu
  • Publication number: 20080150759
    Abstract: This invention pertains to the use of RFID (Radio Frequency ID) technology in Vehicle's Number plates that can be issued by the Motor vehicle administration of the respective state governments. This RFID's will be communicating with the Intelligent Traffic signaling system to efficiently handle traffic. The same RFID's can also be used to store the owners information along with critical medical information like blood group, primary physician's name and contact. This life saving information can be used to help the Police and Paramedics to save the life in trouble with no delay. The active radio frequency signals transmitted from the above RFID's can be used to switch the traffic signals ON/OFF to get the life in trouble to hospital on time.
    Type: Application
    Filed: November 9, 2006
    Publication date: June 26, 2008
    Inventor: Sridhara Subbiah Ramasubbu