US20090216431A1 - Method and apparatus for adjusting distance for generating maneuver instruction for navigation system - Google Patents

Method and apparatus for adjusting distance for generating maneuver instruction for navigation system Download PDF

Info

Publication number
US20090216431A1
US20090216431A1 US12/072,408 US7240808A US2009216431A1 US 20090216431 A1 US20090216431 A1 US 20090216431A1 US 7240808 A US7240808 A US 7240808A US 2009216431 A1 US2009216431 A1 US 2009216431A1
Authority
US
United States
Prior art keywords
intersection
distance
navigation system
reference
reference point
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
Application number
US12/072,408
Inventor
Tien Vu
Clayton Napohaku
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Alpine Electronics Inc
Original Assignee
Alpine Electronics Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Alpine Electronics Inc filed Critical Alpine Electronics Inc
Priority to US12/072,408 priority Critical patent/US20090216431A1/en
Assigned to ALPINE ELECTRONICS, INC reassignment ALPINE ELECTRONICS, INC ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: NAPOHAKU, CLAYTON, VU, TIEN
Publication of US20090216431A1 publication Critical patent/US20090216431A1/en
Application status is Abandoned legal-status Critical

Links

Images

Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01CMEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
    • G01C21/00Navigation; Navigational instruments not provided for in preceding groups G01C1/00-G01C19/00
    • G01C21/26Navigation; Navigational instruments not provided for in preceding groups G01C1/00-G01C19/00 specially adapted for navigation in a road network
    • G01C21/34Route searching; Route guidance
    • G01C21/36Input/output arrangements for on-board computers
    • G01C21/3626Details of the output of route guidance instructions
    • G01C21/3655Timing of guidance instructions

Abstract

A distance adjustment method and apparatus for a navigation system produces a maneuver instruction for an intersection at the most appropriate timing and location during the route guidance. The method includes the steps of: searching an upcoming intersection on the calculated route that requires the user to make a turn therein; retrieving data concerning the upcoming intersection from a map database; adjusting a final distance from a reference point of the intersection by evaluating the retrieved data concerning the intersection; and generating a maneuver instruction at a timing when the user has reached the adjusted final distance from the reference point of the intersection, thereby notifying the user to make a turning maneuver at the intersection.

Description

    FIELD OF THE INVENTION
  • This invention relates generally to a method and apparatus for generating an instruction for turning at an intersection, and more particularly, to a method and apparatus of distance adjustment to improve accuracy in the timing of announcing or otherwise notifying a turning maneuver to a user by a navigation system with respect to a particular intersection by evaluating various factors involved in the intersection.
  • BACKGROUND OF THE INVENTION
  • A navigation system performs travel guidance for enabling a user to easily and quickly reach the selected destination. A typical example is a vehicle navigation system where a vehicle is equipped with a navigation function to guide a driver to a destination through a calculated route. Such a navigation system detects the position of the user's vehicle, and reads out map data pertaining to an area at the current vehicle position from a data storage medium, for example, a CD-ROM (compact disc read-only memory), a DVD (digital versatile disc), a hard disc, or from a remote data server.
  • FIGS. 1A-1H show a typical example of overall procedure and screen display involved in the navigation system. FIG. 1A shows an example of locator map screen of the navigation system when the destination is not specified. A process for specifying a destination typically starts through a main menu screen of FIG. 1B which displays menu items including a “Destination” menu for entering the destination. When selecting “Destination” in FIG. 1B, the navigation system displays a screen of FIG. 1C for specifying an input method for selecting the destination.
  • By selecting, for example, a “Point of Interest” method in FIG. 1C, the navigation system displays selection methods of point of interest (POI) either by “Place Name” or “Place Type” in FIG. 1D. If the “Place Type” is selected in FIG. 1D, the navigation system lists categories of POIs as shown in FIG. 1E through which the user selects a desired category of POIs from the lists.
  • FIG. 1F shows a screen when the user has selected a “Fast Foods” category in the example of FIG. 1E. Then, the screen lists names of the fast food restaurants typically sorted by distance from the current position of the user. If the user selects a particular fast food restaurant from the list, the navigation system calculates a route to the destination as shown in FIG. 1G.
  • After determining the route, the navigation system starts the route guidance operation. As shown in FIG. 1H, the navigation system shows the intersection for instructing the next turn and a direction of the turn. Typically, such an instruction to turn will be made by a highlighted arrow or large characters on the screen as well as by a voice announcement when the vehicle approaches to within a predetermined distance to the intersection.
  • However, a distance to the maneuver point of the intersection may not be appropriate with respect to a timing of announcing the maneuver action depending on circumstances of the intersection. For example, inaccuracy of such distance or timing is caused by a digitization method used in the map data where a maneuver point is defined as a crossing point of center lines. The problem associated with such a conventional method is described with reference to FIGS. 2A and 2B.
  • FIGS. 2A and 2B show a case where a vehicle 29 is to make a right turn at an intersection 20 where a crossing point 21 is a reference point for determining a distance to the maneuver point. In the case of FIG. 2A, an intersection 20 a has a large size because each cross street has three lanes at each side. In the case of FIG. 2B, an intersection 20 b has a small size because each cross street has only one lane at each side.
  • In the example of FIG. 2A, when the vehicle 29 approaches the intersection, an actual point for making a right turn is a corner point 23. However, since the timing of announcing the maneuver is determined based on the distance from the reference point 21, such announcement of “Make a Right Turn” may be made when the vehicle is already at or very close to the corner point 23. Such a maneuver instruction is too sudden and surprises the driver and adversely affects the safe driving.
  • More specifically, as shown in FIG. 2A, the crossing (reference) point 21 is established by two center lines of the streets that form the intersection 20 a. The distance represented by “dr” in FIG. 2A is a reference distance between the crossing point 21 and the vehicle 29. In the conventional technology, the reference distance “dr” is predetermined such as 40 feet so that when a vehicle reached this distance range from a crossing point 21, the navigation system produces the maneuver instruction.
  • The conventional technology may work well if an intersection is small as in the case of the intersection 20 b shown in FIG. 2B. However, if an intersection is large as in the case of FIG. 2A, the fixed reference distance “dr” causes the problem as noted above. As a result, the instruction to turn maneuver may come too late, which fails to leave enough time for the driver to make the maneuver securely. In the worst case, such an instruction for maneuver may not be produced even when the vehicle is already within the intersection, which may scare the driver and seriously impede the safe driving.
  • Therefore, there is a need of a new method and apparatus for navigation system to produce the maneuver instruction such as voice announcement at a more appropriate timing. There is need of a new method and apparatus for navigation system to produce the maneuver instruction at an appropriate timing even when the size and structure of the intersection, directions of turn, etc. vary.
  • SUMMARY OF THE INVENTION
  • It is, therefore, an object of the present invention to provide a distance adjustment method and apparatus for a navigation system which is capable of producing a maneuver instruction for an intersection at the most appropriate timing and location.
  • It is another object of the present invention to provide a distance adjustment method and apparatus for a navigation system which adjusts a distance from the reference point of the intersection to the point where the turn instruction will be made by evaluating various factors including a direction of turn, a structure and size of the intersection, etc.
  • It is a further object of the present invention to provide a distance adjustment method and apparatus for a navigation system which adjusts a distance from the reference point of the intersection to the point where the turn instruction will be made by evaluating various factors including a number of lanes, a width of a lane, size of a center divider, etc.
  • One aspect of the present invention is a distance adjustment method for a navigation system for announcing a maneuver instruction at the most appropriate timing. The method includes the steps of: conducting a route guidance operation of the navigation system for guiding a user to a destination through a calculated route; searching an upcoming intersection on the calculated route that requires the user to make a turn therein within a predetermined distance range ahead from a current position; retrieving data concerning the upcoming intersection from a map database; adjusting a final distance from a reference point of the intersection by evaluating the retrieved data concerning the intersection; and generating a maneuver instruction at a timing when the user has reached the adjusted final distance from the reference point of the intersection, thereby notifying the user to make a turning maneuver at the intersection.
  • In the distance adjustment method of the present invention, the final distance from the reference point of the intersection is adjusted depending on a direction of the turning maneuver at the intersection. Further, the final distance from the reference point of the intersection is adjusted depending on a direction of the turning maneuver at the intersection and a number of lanes involved in the intersection with use of the retrieved data concerning the intersection. Furthermore, in the distance adjustment method of the present invention, the final distance from the reference point of the intersection is adjusted depending on a direction of the turning maneuver at the intersection and a number of lanes involved in the intersection and a width of each lane with use of the retrieved data concerning the intersection.
  • The distance adjustment method of the present invention further includes a step of retrieving a reference distance from the reference point of the intersection, a step of obtaining an adjusted distance based on a direction of the turning maneuver at the intersection and other relevant information derived from the retrieved data concerning the intersection, and a step of combining the reference distance and the adjusted distance to obtain the final distance.
  • In the distance adjustment method, the step of obtaining the adjusted distance includes a step of detecting a number of lanes involved in the intersection and a width of each lane from the retrieved data, and a step of multiplying the number of lanes and the width of the lane.
  • The distance adjustment method of the present invention further includes a step of retrieving a reference distance from the reference point of the intersection, and a step of changing the reference distance based on a direction of the turning maneuver at the intersection and other relevant information derived from the retrieved data concerning the intersection thereby determining the final distance from the reference point.
  • In distance adjustment method of the present invention, the step of changing the reference distance for determining the final distance includes a step of incorporating a half width of a road segment where one road segment is involved in the intersection, and a step of either adding or subtracting the half width from the reference distance depending on the direction of the turning maneuver.
  • Further, the step of changing the reference distance for determining the final distance includes a step of incorporating a half width of a road segment where one road segment is involved in the intersection, a step of incorporating a half width of a center divider of the intersection, and a step of either adding or subtracting the half width of the road segment and the center divider from the reference distance depending on the direction of the turning maneuver.
  • In the distance adjustment method of the present invention, the reference distance is modified by evaluating various factors including a vehicle speed, traffic congestion, and weather condition.
  • Another aspect of the present invention is a distance adjustment apparatus for a navigation system to generating a maneuver instruction at the most appropriate timing by implementing the various steps of the display method described above. The distance adjustment apparatus of the present invention adjusts a distance from the reference point of the intersection to the point where the turn instruction will be made by evaluating various factors including a direction of turn, a structure and size of the intersection, a number of lanes, a width of a lane, size of a center divider, etc.
  • According to the present invention, the navigation system is able to produce the maneuver instruction for the intersection at the most appropriate timing. During the route guidance operation, the method and apparatus of the present invention adjusts a distance from the reference point of the intersection to the point where the turn instruction will be made by evaluating the information. Such information includes a type of an intersection, a size of the intersection such as a number of lanes, a shape or size of a center divider if any, and a direction of turn such as right turn or left turn, a speed of a vehicle, weather condition, etc. In one embodiment, in addition to the reference distance “dr” incorporated in the conventional technology, the present invention utilizes the adjusted distance “da” so that the maneuver instruction is produced when the vehicle reaches the final distance “dr +da” from the reference point. In another embodiment, a specific structure concerning a double-digitized road and its associated data such as a center divider are incorporated to determine the adjusted final distance. Thus, the driver is informed to make a turn sufficiently prior to reach the turning point of the intersection but is not too early until reaching the turning point.
  • BRIEF DESCRIPTION OF THE DRAWINGS
  • FIGS. 1A-1H are schematic diagrams showing an example of operational process and screen display involved in the navigation system for selecting a destination, determining a calculated route to the destination, and conducting a route guidance operation to the destination.
  • FIGS. 2A and 2B are schematic diagrams showing situations involving the problem arises in the conventional technology for producing a maneuver instruction at an intersection where an intersection has a large size with many lanes in FIG. 2A and an intersection has a small size with one lane in FIG. 2B.
  • FIGS. 3A-3C are schematic diagrams showing an example of basic concept of the present invention to solve the problems arise in the intersection of FIG. 2 where FIG. 3A shows an adjusted distance “da” for the case of right turn, where FIG. 3A shows a problem arises in left turn when the same adjusted distance “da” is used, and FIG. 3C shows the situation of left turn where the distance “da” is adjusted based on the size of the intersection.
  • FIG. 4 is a schematic diagram showing an example of intersection to illustrate a method for determining an adjusted distance “da” shown in FIGS. 3A and 3C for producing a maneuvering instruction with a more appropriate timing under the present invention.
  • FIG. 5 is a flow chart showing an example of operational steps for adjusting a distance between a reference point and an announcement point in the situation shown in FIGS. 3A and 3C under the present invention.
  • FIGS. 6A and 6B a schematic view showing another example of intersection to illustrate a method for adjusting a distance for producing a maneuvering instruction with a more appropriate timing under the present invention.
  • FIG. 7 is a flow chart showing an example of operational steps for adjusting a distance between a reference point and an announcement point in the situation shown in FIGS. 6A and 6B under the present invention.
  • FIG. 8 is a block diagram showing an example of functional structure of the apparatus under the present invention for adjusting a distance thereby producing a maneuver instruction at an appropriate timing.
  • FIG. 9 is a functional block diagram of a vehicle navigation system implementing the method for adjusting a distance thereby producing a maneuver instruction at an appropriate timing.
  • DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT
  • The method and apparatus for adjusting a distance between a reference point and an announcement point thereby producing a maneuver instruction at an appropriate timing is explained in detail with reference to the accompanied drawings. The present invention is designed to produce a maneuver instruction, typically, voice announcement of “Make a Right Turn”, “Make a Left Turn”, etc. at an appropriate timing, i.e., not too late and not too early. During the route guidance operation, the method and apparatus of the present invention adjusts a distance from the reference point of the intersection to the point where the turn instruction will be made by evaluating the information on a type of an intersection, a size of the intersection such as a number of lanes, a shape or size of a center divider if any, and a direction of turn such as right turn or left turn, a speed of a vehicle, weather condition, etc.
  • Thus, the navigation system of the present invention is able to provide the maneuver instruction at an appropriate timing for a driver corresponding to particular conditions of the intersection. Thus, the driver is informed to make a turn sufficiently prior to reach the turning point of the intersection but is not too early until reaching the turning point. The navigation system achieves this effect by adjusting the timing or distance from the reference point for announcing the maneuver instruction by evaluating the various factors obtained from the existing and future map database incorporated in the navigation system.
  • It should be noted that the present invention is described herein mainly for the case where the display method and apparatus is applied to a vehicle navigation system for an illustration purpose. However, the method and apparatus under the present invention can be implemented to other devices with the navigation function, such as cellular phones, portable data terminals, laptop computers, or personal computers.
  • FIGS. 3A-3C are schematic diagrams showing an example of basic concept of the present invention to solve the problems arise in the intersection of FIG. 2. FIG. 3A shows an adjusted distance “da” for the case of right turn in addition to the traditional reference distance “dr”. FIG. 3B shows a problem arises in making a left turn when the same adjusted distance “da” shown in FIG. 3B is used. FIG. 3C shows the situation of making a left turn where the distance “da” is adjusted based on the size of the intersection to solve the problem of FIG. 3B.
  • In the example of FIGS. 3A-3C, in addition to the reference distance “dr” incorporated in the conventional technology, the present invention utilizes the adjusted distance “da”. As noted above, the reference distance “dr” is a predetermined distance such as 40 feet which is so designed that when the vehicle has reached this distance range from a reference (crossing) point, the navigation system produces the maneuver instruction in the conventional technology. While the reference distance “dr” is basically the same as in the conventional technology, the adjusted distance “da” varies depending on the size and structure of the intersection, the direction of turn, etc.
  • In the example of FIGS. 3A-3C, the reference (crossing) point 21 is used as a reference for determining a timing (distance) for generating the maneuver instruction such as “Make a Right Turn”. Similar to the situation of FIG. 2, the diagram of FIG. 3A shows the case where the driver of the vehicle 29 is going to make a right turn at the intersection 20. Also similar to the situation of FIG. 2, since the vehicle 29 is on the rightmost lane, the vehicle has to make the right turn in the intersection 20 immediately after passing the corner point 23.
  • In the present invention, the adjusted distance “da” is added to the reference distance “dr” so that the maneuver instruction such as “Make a Right Turn” is generated at a location A which is a final distance (sum of distances da+dr) away from the reference point 21. The location A will be, for example, about 30 feet away from the corner point 23 which is a point for the right turn. As a consequent, the navigation system allows the user to be well prepared for the maneuver and to make a right turn safely and comfortably at the corner point 23.
  • FIG. 3B shows the case where the driver of the vehicle 29 is going to make a left turn at the intersection 20, and the vehicle 29 is now on the leftmost lane. In this situation, the vehicle has to make the left turn immediately after passing the reference point 21. In this example, it is assumed that the same adjusted distance “da” as that of FIG. 3A is added to the reference distance “dr” so that the maneuver instruction such as “Make a Left Turn” is generated at a location B (sum of distances da+dr). Since the reference point 21 is far away from the current vehicle position 29, the maneuver instruction is too early for the user, i.e., not a good timing in this situation.
  • FIG. 3C shows the way for solving the problem involved in the example of FIG. 3B where the driver of the vehicle 29 is going to make a left turn at the intersection 20, and the vehicle 29 is now on the leftmost lane. In this example, the adjusted distance “da” is changed from that of FIG. 3A in taking the size and structure of the intersection 20, the direction of turn, and the vehicle speed, etc., into consideration. As shown, because there is a relatively long distance between the start point of the intersection (ex. corner point 23) and the center line 22A, the adjusted distance “da” is greatly reduced from that of FIG. 3A. Accordingly, the navigation system generates the maneuver instruction such as “Make a Left Turn” at a location C which is a final distance (sum of distances da+dr), and which is an appropriate timing, i.e, not too late and not too early.
  • FIG. 4 is a schematic diagram showing an example of intersection to illustrate a method for determining an adjusted distance “da” shown in FIGS. 3A and 3C for producing a maneuvering instruction with a more appropriate timing under the present invention. Based on the information related to a particular intersection, the method of the present invention adjusts a distance (timing) for producing a maneuver instruction with a more appropriate timing. In the example of FIG. 4, each cross street involving the intersection has three lanes 31 for each side of opposite direction.
  • The information on the number of lanes can be obtained from the map database which is stored in a storage medium such as DVD, HD (hard disc), etc. of the navigation system. The information on the number of lanes may not be sufficiently provided in the today's map database but will be fully provided in the map database of near future. A width of each lane is given in the map database, or known by a person of ordinary skill in the art, or can be estimated relatively accurately according to the information such as functional classes of the road segments.
  • In this example, a size of a cross street is determined by a number of lanes and a width of each lane, for example, 10 feet. Thus, in the case where the number of lanes is 3, and the width of each lane is 10 feet, the total distance (width) of the cross street at one side is calculated by 3 multiplied by 10 feet, which results in 30 feet. Thus, in determining the overall distance to a maneuvering point, the reference distance “dr” is offset by the adjusted distance “da” which is 30 feet in this case.
  • The lane width may not be limited to a particular value but may vary between street to street. For example, the lane width may be different according to the type of the street or functional class, such as a residential street, a main street or a street in an industrial area, etc. Thus, for adjustment of the distance in the present invention, for a larger street, a wider width is assigned while a narrower width is assigned to a smaller street.
  • Thus, in the example of FIG. 4, the adjusted distance “da” is the sum of width of three lanes 31, which starts from the reference point 21. As noted above, the reference point 21 is the crossing point of the center lines 22A and 22B of the two cross streets. As shown in the examples of FIGS. 3A and 3C, the adjusted distance “da” will be changed depending on whether the vehicle is going to make a right turn or left turn, vehicle speed, etc.
  • FIG. 5 is a flow chart showing an example of operational steps for adjusting a distance between a reference point and an announcement point in the situation shown in FIGS. 3A and 3C under the present invention. As noted above, the process of the present invention for adjusting the timing of announcing the maneuver instruction is conducted during the route guidance operation. Thus, the operation shown by FIG. 5 will be carried out when the navigation system or a device with a navigation function is in the route guidance mode in guiding the user to the selected destination through he calculated route.
  • As noted above, the process of FIG. 5 is directed to the method of the present invention for adjusting the timing (distance) for producing the maneuver instruction such as by voice announcement and/or mark, etc. at an intersection. In the first step 101, the navigation system determines whether there is an intersection that requires the user to make a turn on the calculated route to reach the destination. Such determination is made for a predetermined distance range of the calculated route to the destination ahead of the current vehicle position.
  • The step 101 will be repeated until an intersection will be found, and if it is determined that there is an intersection, the navigation system detects a reference point of the intersection in the step 102. Typically, the reference point is a center point of the intersection such as the point 21 in FIGS. 3A-3C which is defined as a crossing point of the center lines 22A and 22B of the cross streets involving the intersection 20. Such a reference point is typically a connection point of two road segments (links) defined in the map data, and an absolute location of the reference point can be obtained as a form of longitude and latitude data from the map database.
  • As noted above, in the example of FIGS. 3A-3C, the reference point is used for establishing an appropriate distance from a vehicle position to announce the maneuver instruction for the intersection. In the step 103, the navigation system will check the map database to see whether information concerning a lane number is available. If it is available, the navigation system will retrieve the lane number information and temporarily stores the information in a memory to be used for adjustment calculation and will proceed to the next step.
  • As noted above, information concerning a lane number may not be complete in the currently marketed map database but will be fully available in the near future. If the lane number information is not available from the map database, the procedure will simply proceed to the next step. During this process, if lane number information is unavailable, the navigation system may assume the lane number based on the type and road class of the cross street.
  • In the next step 104, the navigation system will check whether other relevant information is available from the map database. The information relevant to the distance adjustment of the present invention may include a structure of cross street (whether there is a center divider, a width of each lane, etc.), a functional (road) class of street (major street, residential street, etc.), a current speed of the vehicle, a direction of turn at the intersection, etc. After obtaining all the relevant information in the steps 103 and 104, the navigation system performs a calculation operation in the step 105.
  • In the calculation operation in the step 105, the navigation system incorporates the lane number and the lane width to determine an overall distance from the reference point to the entrance point of the intersection. As will be described later, if the intersection (cross street) includes a center divider, the size and shape of such a center divider will be incorporated in the calculation. Through the calculation operation, the navigation system determines the adjusted distance “da” described above with reference to FIGS. 3A-3C which may be varied depending on the direction of turn (right or left).
  • Based on the calculation operation in the step 105, the navigation system determines the timing of announcing the maneuver instruction in the step 106. In the example of FIGS. 3A-3C, the timing (final distance) is determined by adding the adjusted distance “da” to the reference distance “dr”. Finally, in the step 107, the navigation system produces the maneuver instruction by voice announcement and/or displaying a mark, icon, etc. at the timing determined above.
  • FIGS. 6A and 6B are schematic diagrams showing a situation of intersection wherein the cross street includes a relatively large center divider (road separator bunk) that separates opposing traffic. In the map database industry, such a street is sometimes called a double-digitized road which is a divided road with at least one lane traveling in each of two opposite directions. In the map data, the opposite directions of travel for such a double-digitized road are represented as different road segments.
  • In the example of FIGS. 6A and 6B, dotted lines represent the road segments associated with the intersection links where a cross street extending in a horizontal direction is a double-digitized road. Road segments 70A and 70B comprise double-digitized road, where the road segment 70A represents a road for the left (west) direction and the road segment 70B represents a road for the right (east) direction. Center dividers (Road separator bunks) 71 are provided at the center of the double-digitized road to separate the roads of opposite directions.
  • Thus, in the intersection 20 c of FIGS. 6A and 6B, the basic difference from the intersection of FIGS. 3A-3C is that (1) the cross street has one lane on each side and (2) the cross street has the center divider 71. Similar to the example of FIGS. 3A-3C, a reference point 21 is shown in FIGS. 6A and 6B which is a center point of the intersection 20 c. A reference distance “dr” is predefined with respect to the reference point 21 which is basically the same as that used in FIGS. 2A-2B and 3A-3C to produce the maneuver instruction when the vehicle has arrived at this distance.
  • A road width L1 represents the width of the road segment 70A, a road width L2 represents the width of the road segment 70B, and L3 represents a width of the center divider 71. The existing map database includes, at least in a certain level, the information regarding the road width L1 and L2 of the road segments and the width L3 of the center divider so that the navigation system is able to retrieve them. A map database in the near future will incorporate such information in a more complete fashion.
  • FIG. 6A shows the case where the vehicle is going to make a left turn and FIG. 6B shows the case where the vehicle is going to make a right turn. The method of the present invention in the embodiment of FIGS. 6A and 6B determines the distance or timing for announcing the maneuver instruction in a manner more precise than that of FIGS. 3A-3C. This is done by (1) taking a center position of each lane into consideration, and also (2) taking a width of the center divider into consideration.
  • In FIG. 6A, a final distance “D1” for adjusting a timing of producing a maneuver instruction for a left turn is established with respect to the reference point 21 by changing the reference distance “dr”. As indicated by the thick arrow, it is assumed that the vehicle is going to make a left turn toward the center position of the road segment 70A. Thus, since the reference point 21 is a center of the intersection, a half of the road width L1 of the road segment 70A and a half of the width L3 of the center divider 71 are incorporated in adjusting the distance.
  • Namely, with use of the reference point 21 and the reference distance “dr”, the final distance D1 is calculated as follows:

  • D1=dr−(L1/2+L3/2)
  • where L1 is a road width of the road segment 70A and L3 is a width of the center divider 71. It is apparent that if there are two road segments 70A on one side, L1/2 will be modified to L1(1+1/2) and so on. Accordingly, the navigation system generates the maneuver instruction such as “Make a Left Turn” at the distance D1 away from the reference point 21, which is an appropriate timing, i.e, not too late and not too early.
  • In FIG. 6B, a final distance “D2” for adjusting a timing of producing a maneuver instruction for a right turn is established with respect to the reference point 21 by changing the reference distance “dr”. As indicated by the thick arrow, it is assumed that the vehicle is going to make a right turn toward the center position of the road segment 70B. Thus, since the reference point 21 is a center of the intersection, a half of the road width L2 of the road segment 70B and a half of the width L3 of the center divider 71 are incorporated in adjusting the distance.
  • Namely, with use of the reference point 21 and the reference distance “dr”, the final distance D2 is calculated as follows:

  • D2=dr+(L2/2+L3/2)
  • where L2 is a lane width of the road segment 70B and L3 is the width of the center divider 71. It is apparent that if there are two road segments 70B on one side, L2/2 will be modified to L2(1+1/2) and so on. Accordingly, the navigation system generates the maneuver instruction such as “Make a Right Turn” at the distance D2 away from the reference point 21, which is an appropriate timing, i.e, not too late and not too early.
  • In the present invention, it is preferable to also modify the reference distance “dr” dynamically by taking the speed of the vehicle, type of the street being driven on, traffic congestion, weather condition, etc., into consideration. For instance, the reference distance “dr” may be modified such that the higher the speed of the vehicle, the longer the reference distance becomes. Further, the reference distance “dr” may be modified such that if the weather condition is not good (ex. raining), the reference distance becomes longer.
  • FIG. 7 is a flow chart summarizing the operational steps described with reference to FIGS. 6A and 6B for distance (timing) adjustment for issuing a maneuver announcement. As noted above, FIGS. 6A and 6B are directed to the situation of intersection wherein at least one cross street is a double-digitized road which includes a relatively large center divider. In the step 110, the navigation system checks whether there is an intersection that requires the user to make a turn on the calculated route to reach the destination.
  • Such determination is made for a predetermined distance range of the calculated route to the destination ahead of the current vehicle position. The step 110 will be repeated until an intersection that needs to make a turning maneuver will be found on the calculated route. If it is determined that there is an intersection, the navigation system detects a reference point of the intersection and the predetermined reference distance “dr” in the step 111.
  • Typically, the reference point is a center point of the intersection as shown in FIGS. 6A and 6B, an absolute location of which can be obtained as a form of longitude and latitude data from the map database. The reference distance “dr” is predetermined as described with respect to the conventional technology and it will be adjusted by the present invention based on various factors, vehicle speed, weather condition, etc. In the step 112, the navigation system determines the direction of the turn at the upcoming intersection. If it is a left turn, the process goes to the steps 113-116 and if it is a right turn, the process goes to the steps 117-120.
  • In the case of left turn, the navigation system detects a width L1 of the road segment 70A in the step 113. The navigation system also detects a width L3 of the center divider 71 in the step 114. In the step 115, the navigation system applies the formula “D1=dr−(L1/2+L3/2)” to obtain the distance D1 with use of the reference point 21 and the reference distance “dr”, where L1 is the road width of the road segment 70A and L3 is a width of the center divider 71. Based on the calculation, in the step 116, the navigation system produces the maneuver instruction by voice announcement and/or displaying a mark, icon, etc., for the left turn, when the vehicle reaches the distance Dl from the reference point 21.
  • In the case of right turn, the navigation system detects a width L2 of the road segment 70B in the step 117. The navigation system also detects a width L3 of the center divider 71 in the step 118. In the step 119, the navigation system applies the formula “D1=dr+(L1/2+L3/2)” to obtain the distance D2 with use of the reference point 21 and the reference distance “dr”, where L2 is the road width of the road segment 70B and L3 is a width of the center divider 71. Based on the calculation, in the step 120, the navigation system produces the maneuver instruction by voice announcement and/or displaying a mark, icon, etc., for the right turn, when the vehicle reaches the distance D2 from the reference point 21.
  • FIG. 8 is a functional block diagram showing an example of basic structure of the apparatus of the present invention for adjusting the timing (distance) of announcing the maneuver instruction for an upcoming intersection. The structure of FIG. 8 is applicable to any electronic device having a navigation function which enables the electronic device to guide the user to a particular location as noted above. The apparatus of the present invention for the distance and timing adjustment includes a monitor 150 for graphical user interface, and a controller (CPU) 139 for controlling an overall operation of the apparatus of the present invention.
  • The block diagram of FIG. 8 further includes a map data storage 131 such as a DVD or a hard disc for storing map data, a map memory 134 for storing a required portion of the map data retrieved from the map data storage 131, an input device 137 such as a joystick, a remote controller or other input device for the user to select menus, change directions, scroll the screen, change the location of the cursor on the screen, etc., a position measuring device 133 for detecting a current position of the user, and a buffer memory 148 for storing data concerning the upcoming intersection such as a location of the reference point, number of lanes, width of lane, structure of intersection, functional class of cross street, etc.
  • In FIG. 8, the apparatus for timing adjustment under the present invention is able to retrieve the map data from the map data storage 131 and the map memory 134. Based on the retrieved map data, the display apparatus displays the map image on the monitor 150 which includes the calculated route to the destination, a current vehicle position, etc. The CPU 139 controls an overall operation of the timing and distance adjustment operation for the turning maneuver under the present invention.
  • When the navigation system is in the route guidance mode to guide the user to the destination through the calculated route, the CPU 139 determines whether there is an intersection that requires the user to make a turn on the calculated route to reach the destination. If there is an intersection to make a turn, the CPU 139 detects the reference point of the intersection and the reference distance “dr”. The CPU 139 also detects the information concerning the intersection such as a direction of turn, a number lanes involved, a width of the lane, a number of lanes, a particular structure of the intersection, a functional class of cross street, etc. After obtaining all the relevant information, the CPU 139 performs a calculation operation and determines the adjusted distance described above with reference to FIGS. 3A-3C and 6A-6B. The CPU 139 instructs to produce the maneuver instruction by voice announcement and/or displaying a mark, icon, etc. when the vehicle reaches the adjusted distance.
  • FIG. 9 shows an example of structure of a vehicle navigation system for implementing distance adjustment method of the present invention. While the vehicle navigation system is explained for an illustration purpose, the present invention can also be applied to other types of navigation system, such as a portable navigation device implemented by a PDA (personal digital assistant) device, other hand-held devices such as a wireless telephone, a wrist watch, a laptop or notebook computer.
  • In the block diagram of FIG. 9, the functional blocks similar to those of FIG. 8 are denoted by the same reference numerals. The navigation system includes a data storage medium 131 such as a hard disc, CD-ROM, DVD or other storage means for storing the map data. The navigation system includes a control unit 132 for controlling an operation for reading the information from the data storage medium 131, and a position measuring device 133 for measuring the present vehicle position or user position. For example, the position measuring device 133 has a vehicle speed sensor for detecting a moving distance, a gyroscope for detecting a moving direction, a microprocessor for calculating a position, a GPS (global positioning system) receiver for receiving and analyzing GPS signals, and etc.
  • The block diagram of FIG. 9 further includes a map information memory 134 for storing a portion of the map data relevant to the intended operation of the navigation system which is read from the data storage medium 131, a database memory 135 for storing database information such as point of interest (POI) information which is read out from the data storage medium 131, a remote controller 137 for executing a menu selection operation, cursor movements, an enlarge/reduce operation, a destination input operation, etc. and a remote controller interface 138. Although a remote controller is a typical example for selecting menus, executing selected functions and etc., the navigation system includes various other input methods to achieve the same and similar operations done through the remote controller.
  • In FIG. 9, the navigation system further includes a bus 136 for interfacing the above functional blocks in the system, a processor (CPU) 139 for controlling an overall operation of the navigation system, a ROM 140 for storing various control programs such as a route search program and a map matching program necessary for navigation control as well as a local brand icon display program for the present invention, a RAM 141 for storing a processing result such as a guide route, a display controller 143 for generating map image (a map guide image and an arrow guide image) on the basis of the map information, a VRAM 144 for storing images generated by the display controller 143, a menu/list generating unit 145 for generating menu image/various list images, a synthesizing unit 146, a wireless transceiver 149 for wireless communication to retrieve data from a remote server, a buffer memory 148 for temporally storing data concerning the upcoming intersection such as a location of the reference point, width of lane, structure of intersection, etc.
  • The CPU 139 controls an overall operation of the navigation system including the distance adjustment operation under the present invention as described above for producing a maneuver instruction at an appropriate timing. The data related to the distance adjustment will be stored in the buffer memory 148 for further processing. A program that performs the procedure of the present invention including the one shown in the flow charts of FIGS. 5 and 7 may be stored in the ROM 140 or other storage medium and is executed by the CPU 139. Thus, the navigation system is able to produce the maneuver instruction for the intersection at the most appropriate timing.
  • As has been described above, according to the present invention, the navigation system is able to produce the maneuver instruction for the intersection at the most appropriate timing. During the route guidance operation, the method and apparatus of the present invention adjusts a distance from the reference point of the intersection to the point where the turn instruction will be made by evaluating the information. Such information includes a type of an intersection, a size of the intersection such as a number of lanes, a shape or size of a center divider if any, and a direction of turn such as right turn or left turn, a speed of a vehicle, weather condition, etc. In one embodiment, in addition to the reference distance “dr” incorporated in the conventional technology, the present invention utilizes the adjusted distance “da” so that the maneuver instruction is produced when the vehicle reaches the distance “dr+da” from the reference point. In another embodiment, a specific structure concerning a double-digitized road and its associated data such as a center divider are incorporated to determine the adjusted distance. Thus, the driver is informed to make a turn sufficiently prior to reach the turning point of the intersection but is not too early until reaching the turning point.
  • Although the invention is described herein with reference to the preferred embodiment, one skilled in the art will readily appreciate that various modifications and variations may be made without departing from the spirit and scope of the present invention. Such modifications and variations are considered to be within the purview and scope of the appended claims and their equivalents.

Claims (20)

1. A distance adjustment method for a navigation system, comprising the following steps of:
conducting a route guidance operation of the navigation system for guiding a user to a destination through a calculated route;
searching an upcoming intersection on the calculated route that requires the user to make a turn therein within a predetermined distance range ahead from a current position;
retrieving data concerning the upcoming intersection from a map database;
adjusting a final distance from a reference point of the intersection by evaluating the retrieved data concerning the intersection; and
generating a maneuver instruction at a timing when the user has reached the adjusted final distance from the reference point of the intersection, thereby notifying the user to make a turning maneuver at the intersection.
2. A distance adjustment method for a navigation system as defined in claim 1, wherein the final distance from the reference point of the intersection is adjusted depending on a direction of the turning maneuver at the intersection.
3. A distance adjustment method for a navigation system as defined in claim 1, wherein the final distance from the reference point of the intersection is adjusted depending on a direction of the turning maneuver at the intersection and a number of lanes involved in the intersection with use of the retrieved data concerning the intersection.
4. A distance adjustment method for a navigation system as defined in claim 1, wherein the final distance from the reference point of the intersection is adjusted depending on a direction of the turning maneuver at the intersection and a number of lanes involved in the intersection and a width of each lane with use of the retrieved data concerning the intersection.
5. A distance adjustment method for a navigation system as defined in claim 1, further comprising a step of retrieving a reference distance from the reference point of the intersection, a step of obtaining an adjusted distance based on a direction of the turning maneuver at the intersection and other relevant information derived from the retrieved data concerning the intersection, and a step of combining the reference distance and the adjusted distance to obtain the final distance.
6. A distance adjustment method for a navigation system as defined in claim 5, wherein said step of obtaining the adjusted distance includes a step of detecting a number of lanes involved in the intersection and a width of each lane from the retrieved data, and a step of multiplying the number of lanes and the width of the lane.
7. A distance adjustment method for a navigation system as defined in claim 1, further comprising a step of retrieving a reference distance from the reference point of the intersection, and a step of changing the reference distance based on a direction of the turning maneuver at the intersection and other relevant information derived from the retrieved data concerning the intersection thereby determining the final distance from the reference point.
8. A distance adjustment method for a navigation system as defined in claim 7, wherein said step of changing the reference distance for determining the final distance includes a step of incorporating a half width of a road segment where one road segment is involved in the intersection, and a step of either adding or subtracting the half width from the reference distance depending on the direction of the turning maneuver.
9. A distance adjustment method for a navigation system as defined in claim 7, wherein said step of changing the reference distance for determining the final distance includes a step of incorporating a half width of a road segment where one road segment is involved in the intersection, a step of incorporating a half width of a center divider of the intersection, and a step of either adding or subtracting the half width of the road segment and the center divider from the reference distance depending on the direction of the turning maneuver.
10. A distance adjustment method for a navigation system as defined in claim 5, wherein the reference distance is modified by evaluating various factors including a vehicle speed, traffic congestion, and weather condition.
11. A distance adjustment apparatus for a navigation system, comprising:
means for conducting a route guidance operation of the navigation system for guiding a user to a destination through a calculated route;
means for searching an upcoming intersection on the calculated route that requires the user to make a turn therein within a predetermined distance range ahead from a current position;
means for retrieving data concerning the upcoming intersection from a map database;
means for adjusting a final distance from a reference point of the intersection by evaluating the retrieved data concerning the intersection; and
means for generating a maneuver instruction at a timing when the user has reached the adjusted final distance from the reference point of the intersection, thereby notifying the user to make a turning maneuver at the intersection.
12. A distance adjustment apparatus for a navigation system as defined in claim 11, wherein the final distance from the reference point of the intersection is adjusted depending on a direction of the turning maneuver at the intersection.
13. A distance adjustment apparatus for a navigation system as defined in claim 11, wherein the final distance from the reference point of the intersection is adjusted depending on a direction of the turning maneuver at the intersection and a number of lanes involved in the intersection with use of the retrieved data concerning the intersection.
14. A distance adjustment apparatus for a navigation system as defined in claim 11, wherein the final distance from the reference point of the intersection is adjusted depending on a direction of the turning maneuver at the intersection and a number of lanes involved in the intersection and a width of each lane with use of the retrieved data concerning the intersection.
15. A distance adjustment apparatus for a navigation system as defined in claim 11, further comprising means for retrieving a reference distance from the reference point of the intersection, means for obtaining an adjusted distance based on a direction of the turning maneuver at the intersection and other relevant information derived from the retrieved data concerning the intersection, and means for combining the reference distance and the adjusted distance to obtain the final distance.
16. A distance adjustment apparatus for a navigation system as defined in claim 15, wherein said means for obtaining the adjusted distance includes means for detecting a number of lanes involved in the intersection and a width of each lane from the retrieved data, and means for multiplying the number of lanes and the width of the lane.
17. A distance adjustment apparatus for a navigation system as defined in claim 11, further comprising means for retrieving a reference distance from the reference point of the intersection, and means for changing the reference distance based on a direction of the turning maneuver at the intersection and other relevant information derived from the retrieved data concerning the intersection thereby determining the final distance from the reference point.
18. A distance adjustment apparatus for a navigation system as defined in claim 17, wherein said means for changing the reference distance for determining the final distance includes means for incorporating a half width of a road segment where one road segment is involved in the intersection, and means for either adding or subtracting the half width from the reference distance depending on the direction of the turning maneuver.
19. A distance adjustment apparatus for a navigation system as defined in claim 17, wherein said means of changing the reference distance for determining the final distance includes a step of incorporating a half width of a road segment where one road segment is involved in the intersection, means for incorporating a half width of a center divider of the intersection, and means for either adding or subtracting the half width of the road segment and the center divider from the reference distance depending on the direction of the turning maneuver.
20. A distance adjustment apparatus for a navigation system as defined in claim 15, wherein the reference distance is modified by evaluating various factors including a vehicle speed, traffic congestion, and weather condition.
US12/072,408 2008-02-26 2008-02-26 Method and apparatus for adjusting distance for generating maneuver instruction for navigation system Abandoned US20090216431A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US12/072,408 US20090216431A1 (en) 2008-02-26 2008-02-26 Method and apparatus for adjusting distance for generating maneuver instruction for navigation system

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US12/072,408 US20090216431A1 (en) 2008-02-26 2008-02-26 Method and apparatus for adjusting distance for generating maneuver instruction for navigation system
EP20090002534 EP2096413B1 (en) 2008-02-26 2009-02-23 Method and apparatus for adjusting distance for generating maneuver instruction for navigation system
US13/658,605 US8560231B2 (en) 2008-02-26 2012-10-23 Method and apparatus for adjusting distance for generating maneuver instruction for navigation system

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US13/658,605 Continuation US8560231B2 (en) 2008-02-26 2012-10-23 Method and apparatus for adjusting distance for generating maneuver instruction for navigation system

Publications (1)

Publication Number Publication Date
US20090216431A1 true US20090216431A1 (en) 2009-08-27

Family

ID=40565255

Family Applications (2)

Application Number Title Priority Date Filing Date
US12/072,408 Abandoned US20090216431A1 (en) 2008-02-26 2008-02-26 Method and apparatus for adjusting distance for generating maneuver instruction for navigation system
US13/658,605 Active US8560231B2 (en) 2008-02-26 2012-10-23 Method and apparatus for adjusting distance for generating maneuver instruction for navigation system

Family Applications After (1)

Application Number Title Priority Date Filing Date
US13/658,605 Active US8560231B2 (en) 2008-02-26 2012-10-23 Method and apparatus for adjusting distance for generating maneuver instruction for navigation system

Country Status (2)

Country Link
US (2) US20090216431A1 (en)
EP (1) EP2096413B1 (en)

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100030465A1 (en) * 2008-07-31 2010-02-04 Samsung Electronics Co., Ltd. Navigation system, method and database using mobile devices
US20100271720A1 (en) * 2009-04-27 2010-10-28 MAGNETI MARELLI S.p.A. System and method for driving assistance at road intersections
US20100286864A1 (en) * 2009-05-07 2010-11-11 Renesas Electronics Corporation Vehicle communication system
US20110010088A1 (en) * 2008-03-31 2011-01-13 Aisin Aw Co., Ltd. Navigation device, navigation method and navigation program
US20110054774A1 (en) * 2008-05-29 2011-03-03 Simone Tertoolen Navigation device and method for altering map information related to audible information
US20120056756A1 (en) * 2010-09-02 2012-03-08 Honda Motor Co., Ltd. Method Of Estimating Intersection Control
US20120072108A1 (en) * 2010-09-17 2012-03-22 Kapsch Trafficcom Ag Method for determining the length of the route travelled by a vehicle
CN102538814A (en) * 2012-01-09 2012-07-04 深圳市凯立德欣软件技术有限公司 Instant turning prompting method and position service terminal
US20130191020A1 (en) * 2012-01-20 2013-07-25 Gm Global Technology Operations, Llc Adaptable navigation device
CN104034327A (en) * 2013-03-04 2014-09-10 华为技术有限公司 Pedestrian navigation processing method, terminal unit and system
US20140379249A1 (en) * 2013-06-24 2014-12-25 Here Global B.V. Method and apparatus for conditional driving guidance
JP2015114859A (en) * 2013-12-12 2015-06-22 日産自動車株式会社 Driving evaluation device and driving evaluation method
WO2016000235A1 (en) * 2014-07-03 2016-01-07 华为技术有限公司 Location information determination method, device and user equipment
USD750663S1 (en) * 2013-03-12 2016-03-01 Google Inc. Display screen or a portion thereof with graphical user interface
USD753717S1 (en) 2012-11-30 2016-04-12 Google Inc. Display screen or a portion thereof with a graphical user interface
USD754189S1 (en) * 2013-03-13 2016-04-19 Google Inc. Display screen or portion thereof with graphical user interface
USD754190S1 (en) * 2013-03-13 2016-04-19 Google Inc. Display screen or portion thereof with graphical user interface
US9501058B1 (en) 2013-03-12 2016-11-22 Google Inc. User interface for displaying object-based indications in an autonomous driving system
JP2017181150A (en) * 2016-03-29 2017-10-05 株式会社ゼンリンデータコム Navigation device, navigation method, and navigation program
DE102016015696A1 (en) * 2016-12-21 2018-06-21 Preh Car Connect Gmbh Issuing a maneuver instruction by means of a navigation device

Families Citing this family (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5533762B2 (en) * 2011-03-31 2014-06-25 アイシン・エィ・ダブリュ株式会社 Movement guidance system, movement guidance apparatus, movement guidance method, and computer program
USD719973S1 (en) 2012-06-06 2014-12-23 Apple Inc. Display screen or portion thereof with graphical user interface
USD709915S1 (en) 2012-06-11 2014-07-29 Apple Inc. Display screen or portion thereof with graphical user interface
USD750110S1 (en) * 2012-11-08 2016-02-23 Uber Technologies, Inc. Display screen of a computing device with a computer-generated electronic panel for providing information of a service
US8898010B2 (en) * 2013-01-11 2014-11-25 Here Global B.V. Deviation detection in mobile transit systems
US8898016B2 (en) * 2013-03-15 2014-11-25 Applied Minds, Llc Method and apparatus for two-stage planning
US9800360B2 (en) 2014-02-06 2017-10-24 Honda Motor Co., Ltd. Management of stations using preferences from social networking profiles
US9736650B2 (en) 2014-03-27 2017-08-15 Here Global B.V. Method and apparatus for adapting navigation notifications based on compliance information
US10043185B2 (en) 2014-05-29 2018-08-07 Apple Inc. User interface for payments
US9967401B2 (en) 2014-05-30 2018-05-08 Apple Inc. User interface for phone call routing among devices
US10339293B2 (en) 2014-08-15 2019-07-02 Apple Inc. Authenticated device used to unlock another device
CN107529009A (en) 2014-09-02 2017-12-29 苹果公司 Remote camera user interface
WO2016036603A1 (en) 2014-09-02 2016-03-10 Apple Inc. Reduced size configuration interface
WO2016036552A1 (en) 2014-09-02 2016-03-10 Apple Inc. User interactions for a mapping application
US20160224973A1 (en) 2015-02-01 2016-08-04 Apple Inc. User interface for payments
US9574896B2 (en) 2015-02-13 2017-02-21 Apple Inc. Navigation user interface
USD775636S1 (en) 2015-02-27 2017-01-03 Uber Technologies, Inc. Display screen for a computing device with graphical user interface
USD795268S1 (en) 2015-02-27 2017-08-22 Uber Technologies, Inc. Display screen computing device with graphical user interface
US10254911B2 (en) 2015-03-08 2019-04-09 Apple Inc. Device configuration user interface
US9940637B2 (en) 2015-06-05 2018-04-10 Apple Inc. User interface for loyalty accounts and private label accounts
US20160358133A1 (en) 2015-06-05 2016-12-08 Apple Inc. User interface for loyalty accounts and private label accounts for a wearable device
US10147316B2 (en) 2016-09-12 2018-12-04 Here Global B.V. Method, apparatus and computer program product for indexing traffic lanes for signal control and traffic flow management
DE102018007836A1 (en) 2018-10-04 2019-03-28 Daimler Ag Method for adapting a representation of a digital map in a navigation system for a vehicle, navigation system for carrying out such a method, and vehicle with such a navigation system

Citations (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4937752A (en) * 1988-07-18 1990-06-26 Aisin Aw Co., Ltd. An apparatus for correcting distance error in a navigation system
US5410486A (en) * 1992-07-20 1995-04-25 Toyota Jidosha K.K. Navigation system for guiding vehicle by voice
US5612882A (en) * 1995-02-01 1997-03-18 Lefebvre; Rebecca K. Method and apparatus for providing navigation guidance
US5737225A (en) * 1994-07-01 1998-04-07 U.S. Philips Corporation Navigation system
US5757289A (en) * 1994-09-14 1998-05-26 Aisin Aw Co., Ltd. Vehicular navigation system
US5774071A (en) * 1994-11-30 1998-06-30 Honda Giken Kogyo Kabushiki Kaisha On-board vehicle navigation apparatus
US5904728A (en) * 1996-10-11 1999-05-18 Visteon Technologies, Llc Voice guidance timing in a vehicle navigation system
US6212470B1 (en) * 1991-11-01 2001-04-03 Motorola, Inc. Driver preference responsive vehicle route guidance system
US6269304B1 (en) * 1999-03-01 2001-07-31 Aisin Aw Co., Ltd Navigation system and method and storage medium in which navigation programs are stored
US6278943B1 (en) * 1999-03-12 2001-08-21 Denso Corp. Vehicle system for travel guidance of intersections
US6388582B2 (en) * 2000-02-16 2002-05-14 Sushita Electric Industrial Co., Ltd. Lane guidance display method, and navigation device and recording medium for realizing the method
US20040186663A1 (en) * 2003-03-20 2004-09-23 Takashi Irie Vehicle navigation system and route guidance method
US20050171694A1 (en) * 2003-12-19 2005-08-04 Harmut Schirmer Navigation system and navigation method
US20060009904A1 (en) * 2004-07-07 2006-01-12 Denso Corporation Vehicular navigation system
US20060235607A1 (en) * 2005-04-13 2006-10-19 Denso Corporation Navigation device for a vehicle
US20070050133A1 (en) * 2005-07-11 2007-03-01 Aisin Aw Co., Ltd. Navigation systems, methods, and programs
US7194355B2 (en) * 2003-03-10 2007-03-20 Denso Corporation Navigation system
US7502685B2 (en) * 2004-08-25 2009-03-10 Alpine Electronics, Inc. Vehicle navigation apparatus and method with traveling direction indication at guidance intersection

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0749243A (en) 1993-08-06 1995-02-21 Sumitomo Electric Ind Ltd Intersection guide device
JP2989740B2 (en) 1994-03-31 1999-12-13 富士通テン株式会社 Route guidance method
JP4246693B2 (en) 2004-12-24 2009-04-02 アイシン・エィ・ダブリュ株式会社 Driving assistance device
JP4771365B2 (en) * 2005-11-30 2011-09-14 アイシン・エィ・ダブリュ株式会社 Route guidance system, route guidance method and program
GB2440756B (en) * 2006-08-10 2010-05-12 Denso Corp Guidance system with variable guidance timing
JP4568370B2 (en) * 2007-03-28 2010-10-27 株式会社ナビタイムジャパン Map display system, map display device, and map display method
DE112008000783T5 (en) * 2007-04-05 2010-03-25 Mitsubishi Electric Corp. Route guidance device
KR100837345B1 (en) * 2007-06-25 2008-06-12 (주)엠앤소프트 Method for displaying crossroad magnification in navigation
JP4985362B2 (en) * 2007-11-30 2012-07-25 アイシン・エィ・ダブリュ株式会社 Navigation device, navigation method, and navigation program
US8315796B2 (en) * 2007-12-28 2012-11-20 Mitsubishi Electric Corporation Navigation device
US8346465B2 (en) * 2008-02-26 2013-01-01 Apline Electronics, Inc Method and apparatus for determining and displaying meaningful cross street for navigation system
WO2010109805A1 (en) * 2009-03-26 2010-09-30 株式会社トヨタマップマスター Device and method for generating route restriction information of intersection, computer program for generating route restriction information of intersection, and recording medium for recording computer program
US8340894B2 (en) * 2009-10-08 2012-12-25 Honda Motor Co., Ltd. Method of dynamic intersection mapping

Patent Citations (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4937752A (en) * 1988-07-18 1990-06-26 Aisin Aw Co., Ltd. An apparatus for correcting distance error in a navigation system
US6212470B1 (en) * 1991-11-01 2001-04-03 Motorola, Inc. Driver preference responsive vehicle route guidance system
US5410486A (en) * 1992-07-20 1995-04-25 Toyota Jidosha K.K. Navigation system for guiding vehicle by voice
US5737225A (en) * 1994-07-01 1998-04-07 U.S. Philips Corporation Navigation system
US5757289A (en) * 1994-09-14 1998-05-26 Aisin Aw Co., Ltd. Vehicular navigation system
US5774071A (en) * 1994-11-30 1998-06-30 Honda Giken Kogyo Kabushiki Kaisha On-board vehicle navigation apparatus
US5612882A (en) * 1995-02-01 1997-03-18 Lefebvre; Rebecca K. Method and apparatus for providing navigation guidance
US5904728A (en) * 1996-10-11 1999-05-18 Visteon Technologies, Llc Voice guidance timing in a vehicle navigation system
US6269304B1 (en) * 1999-03-01 2001-07-31 Aisin Aw Co., Ltd Navigation system and method and storage medium in which navigation programs are stored
US6278943B1 (en) * 1999-03-12 2001-08-21 Denso Corp. Vehicle system for travel guidance of intersections
US6388582B2 (en) * 2000-02-16 2002-05-14 Sushita Electric Industrial Co., Ltd. Lane guidance display method, and navigation device and recording medium for realizing the method
US7194355B2 (en) * 2003-03-10 2007-03-20 Denso Corporation Navigation system
US20050261831A1 (en) * 2003-03-20 2005-11-24 Takashi Irie Vehicle navigation system and route guidance method
US20040186663A1 (en) * 2003-03-20 2004-09-23 Takashi Irie Vehicle navigation system and route guidance method
US20050171694A1 (en) * 2003-12-19 2005-08-04 Harmut Schirmer Navigation system and navigation method
US20060009904A1 (en) * 2004-07-07 2006-01-12 Denso Corporation Vehicular navigation system
US7502685B2 (en) * 2004-08-25 2009-03-10 Alpine Electronics, Inc. Vehicle navigation apparatus and method with traveling direction indication at guidance intersection
US20060235607A1 (en) * 2005-04-13 2006-10-19 Denso Corporation Navigation device for a vehicle
US20070050133A1 (en) * 2005-07-11 2007-03-01 Aisin Aw Co., Ltd. Navigation systems, methods, and programs

Cited By (55)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110010088A1 (en) * 2008-03-31 2011-01-13 Aisin Aw Co., Ltd. Navigation device, navigation method and navigation program
US20110054774A1 (en) * 2008-05-29 2011-03-03 Simone Tertoolen Navigation device and method for altering map information related to audible information
US8635019B2 (en) * 2008-05-29 2014-01-21 Tomtom International B.V. Navigation device and method for altering map information related to audible information
US8494768B2 (en) * 2008-07-31 2013-07-23 Samsung Electronics Co., Ltd Navigation system, method and database using mobile devices
US20100030465A1 (en) * 2008-07-31 2010-02-04 Samsung Electronics Co., Ltd. Navigation system, method and database using mobile devices
US20100271720A1 (en) * 2009-04-27 2010-10-28 MAGNETI MARELLI S.p.A. System and method for driving assistance at road intersections
US8681219B2 (en) * 2009-04-27 2014-03-25 MAGNETI MARELLI S.p.A. System and method for driving assistance at road intersections
US20100286864A1 (en) * 2009-05-07 2010-11-11 Renesas Electronics Corporation Vehicle communication system
US8229668B2 (en) * 2009-05-07 2012-07-24 Renesas Electronics Corporation Vehicle communication system
US8823556B2 (en) * 2010-09-02 2014-09-02 Honda Motor Co., Ltd. Method of estimating intersection control
US9111448B2 (en) * 2010-09-02 2015-08-18 Honda Motor Co., Ltd. Warning system for a motor vehicle determining an estimated intersection control
US20120056756A1 (en) * 2010-09-02 2012-03-08 Honda Motor Co., Ltd. Method Of Estimating Intersection Control
US20140218214A1 (en) * 2010-09-02 2014-08-07 Honda Motor Co., Ltd. Warning System For A Motor Vehicle Determining An Estimated Intersection Control
US8972173B2 (en) * 2010-09-17 2015-03-03 Kapsch Trafficcom Ag Method for determining the length of the route travelled by a vehicle
US20120072108A1 (en) * 2010-09-17 2012-03-22 Kapsch Trafficcom Ag Method for determining the length of the route travelled by a vehicle
CN102538814A (en) * 2012-01-09 2012-07-04 深圳市凯立德欣软件技术有限公司 Instant turning prompting method and position service terminal
US8855925B2 (en) * 2012-01-20 2014-10-07 GM Global Technology Operations LLC Adaptable navigation device
US20130191020A1 (en) * 2012-01-20 2013-07-25 Gm Global Technology Operations, Llc Adaptable navigation device
USD754204S1 (en) 2012-11-30 2016-04-19 Google Inc. Display screen or a portion thereof with a graphical user interface
USD753719S1 (en) 2012-11-30 2016-04-12 Google Inc. Display screen or a portion thereof with a graphical user interface
USD753718S1 (en) 2012-11-30 2016-04-12 Google Inc. Display screen or a portion thereof with a graphical user interface
USD753720S1 (en) 2012-11-30 2016-04-12 Google Inc. Display screen or a portion thereof with a graphical user interface
USD753721S1 (en) 2012-11-30 2016-04-12 Google Inc. Display screen or portion thereof with animated graphical user interface
USD753722S1 (en) 2012-11-30 2016-04-12 Google Inc. Display screen or portion thereof with animated graphical user interface
USD753717S1 (en) 2012-11-30 2016-04-12 Google Inc. Display screen or a portion thereof with a graphical user interface
USD754203S1 (en) 2012-11-30 2016-04-19 Google Inc. Display screen or a portion thereof with a graphical user interface
JP2018031783A (en) * 2013-03-04 2018-03-01 華為技術有限公司Huawei Technologies Co.,Ltd. Method, system, and terminal equipment for performing pedestrian navigation
CN104034327A (en) * 2013-03-04 2014-09-10 华为技术有限公司 Pedestrian navigation processing method, terminal unit and system
WO2014134933A1 (en) * 2013-03-04 2014-09-12 华为技术有限公司 Pedestrian navigation processing method, terminal device and system
USD750663S1 (en) * 2013-03-12 2016-03-01 Google Inc. Display screen or a portion thereof with graphical user interface
US10168710B1 (en) 2013-03-12 2019-01-01 Waymo Llc User interface for displaying object-based indications in an autonomous driving system
USD813245S1 (en) 2013-03-12 2018-03-20 Waymo Llc Display screen or a portion thereof with graphical user interface
USD786892S1 (en) 2013-03-12 2017-05-16 Waymo Llc Display screen or portion thereof with transitional graphical user interface
US9501058B1 (en) 2013-03-12 2016-11-22 Google Inc. User interface for displaying object-based indications in an autonomous driving system
USD857745S1 (en) 2013-03-12 2019-08-27 Waymo Llc Display screen or a portion thereof with graphical user interface
US10139829B1 (en) 2013-03-12 2018-11-27 Waymo Llc User interface for displaying object-based indications in an autonomous driving system
USD761857S1 (en) 2013-03-12 2016-07-19 Google Inc. Display screen or a portion thereof with graphical user interface
USD786893S1 (en) 2013-03-12 2017-05-16 Waymo Llc Display screen or portion thereof with transitional graphical user interface
USD765713S1 (en) 2013-03-13 2016-09-06 Google Inc. Display screen or portion thereof with graphical user interface
USD766304S1 (en) 2013-03-13 2016-09-13 Google Inc. Display screen or portion thereof with graphical user interface
USD768184S1 (en) 2013-03-13 2016-10-04 Google Inc. Display screen or portion thereof with graphical user interface
USD771682S1 (en) 2013-03-13 2016-11-15 Google Inc. Display screen or portion thereof with graphical user interface
USD812070S1 (en) 2013-03-13 2018-03-06 Waymo Llc Display screen or portion thereof with graphical user interface
USD772274S1 (en) 2013-03-13 2016-11-22 Google Inc. Display screen or portion thereof with graphical user interface
USD773517S1 (en) 2013-03-13 2016-12-06 Google Inc. Display screen or portion thereof with graphical user interface
USD754189S1 (en) * 2013-03-13 2016-04-19 Google Inc. Display screen or portion thereof with graphical user interface
USD754190S1 (en) * 2013-03-13 2016-04-19 Google Inc. Display screen or portion thereof with graphical user interface
USD771681S1 (en) 2013-03-13 2016-11-15 Google, Inc. Display screen or portion thereof with graphical user interface
US9103694B2 (en) * 2013-06-24 2015-08-11 Here Global B.V. Method and apparatus for conditional driving guidance
US20140379249A1 (en) * 2013-06-24 2014-12-25 Here Global B.V. Method and apparatus for conditional driving guidance
JP2015114859A (en) * 2013-12-12 2015-06-22 日産自動車株式会社 Driving evaluation device and driving evaluation method
CN105393084A (en) * 2014-07-03 2016-03-09 华为技术有限公司 Location information determination method, device and user equipment
WO2016000235A1 (en) * 2014-07-03 2016-01-07 华为技术有限公司 Location information determination method, device and user equipment
JP2017181150A (en) * 2016-03-29 2017-10-05 株式会社ゼンリンデータコム Navigation device, navigation method, and navigation program
DE102016015696A1 (en) * 2016-12-21 2018-06-21 Preh Car Connect Gmbh Issuing a maneuver instruction by means of a navigation device

Also Published As

Publication number Publication date
US8560231B2 (en) 2013-10-15
US20130073204A1 (en) 2013-03-21
EP2096413A1 (en) 2009-09-02
EP2096413B1 (en) 2011-07-20

Similar Documents

Publication Publication Date Title
US6836723B2 (en) Navigation method and system
US6434482B1 (en) On-vehicle navigation system for searching facilities along a guide route
JP4549149B2 (en) Display method and display device for navigation system
US6941222B2 (en) Navigation system, server system for a navigation system, and computer-readable information recorded medium in which destination prediction program is recorded
US6542814B2 (en) Methods and apparatus for dynamic point of interest display
US6856901B2 (en) Display method and apparatus for navigation system
US7519469B2 (en) Display method and apparatus for navigation system
US9103681B2 (en) Navigation application with several navigation modes
US6714863B2 (en) In-vehicle navigation apparatus
JP2013524221A (en) Navigation or mapping apparatus and method
WO2009128496A1 (en) Navigation device
US7412326B2 (en) Map display device and map display method
JP2010515891A (en) Navigation apparatus and method for displaying navigation information
JP2826086B2 (en) Navigation device
US6859723B2 (en) Display method and apparatus for navigation system
US20100305842A1 (en) METHOD AND APPARATUS TO FILTER AND DISPLAY ONLY POIs CLOSEST TO A ROUTE
WO2015129366A1 (en) Route searching system, route searching method, computer program, and cost table data structure
US9739633B2 (en) Navigation device and method
JP4225849B2 (en) Guided map display method and apparatus for navigation system
JP4919692B2 (en) Navigation device and information retrieval method thereof
JP4111885B2 (en) Map search and display method and apparatus
JP4548460B2 (en) Navigation device
US7480566B2 (en) Method and apparatus for navigation system for searching easily accessible POI along route
JP4449162B2 (en) Map display device
US8560227B2 (en) Route planning apparatus and method for navigation system

Legal Events

Date Code Title Description
AS Assignment

Owner name: ALPINE ELECTRONICS, INC, JAPAN

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:VU, TIEN;NAPOHAKU, CLAYTON;REEL/FRAME:021241/0554

Effective date: 20080611

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION