Road map displaying system for automotive vehicle
February 19, 2012. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesAuto routing computer for eliminating the need for maps or travel instructions Video system for assisting automobile traffic employing a segmented LCD display Method and apparatus for route-selective reproduction of broadcast traffic announcements Method of and system for providing continually updated traffic or other information to telephonically and other communications-linked customers Traffic information system Device for the output of safety-related road information in locating and navigating systems of land vehicles Data fusion process for an in-vehicle traffic congestion information system Patent #: 5173691 InventorAssigneeApplicationNo. 836905 filed on 02/19/1992US Classes:340/905, Highway information (e.g., weather, speed limits, etc.)340/988, VEHICLE POSITION INDICATION340/995.13Traffic informationExaminersPrimary: Swarthout, Brent A.Attorney, Agent or FirmForeign Patent References
International ClassG08G 001/09Foreign Application Priority Data1991-03-28 JPAbstractA road map displaying system for an automotive vehicle for displaying road information transmitted by a radio beacon transmitter (1) on a display unit (6) of an automotive vehicle comprises: a radio receiver (3) for receiving road information including position data and traffic snarl data transmitted by the radio beacon transmitter; a memory unit (4) for storing various road maps; and a processing unit (5) for selecting a current road map on the basis of the received position data, displaying traffic snarl information on the selected road map on the basis of the received traffic snarl data, measuring time elapsed after the road information has been received, and in particular, deleting the traffic snarl information displayed on the selected road map, when a predetermined timer or distance-related condition is satisfied after the road information has been received. Since the old traffic snarl information can be deleted, a more reliable traffic information can be provided to the driver, without confusing the driver with the old road information. | |
