JP2006343480A - Map display apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To make a viewpoint three-dimensionally displayed on a display apparatus coincide with the driver's viewpoint as closely as possible when a vehicle makes a right/left turn on a road having two or more lanes in one direction. <P>SOLUTION: A map display apparatus constituted in such a manner that a map can be three-dimensionally displayed on the display apparatus is so constituted that, when a vehicle is traveling on a road having two or more lanes in one direction, the lane on which the vehicle is traveling is specified and the viewpoint in three-dimensional display is changed according to the specified lane on which the vehicle is traveling. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a map display device configured to display a 3D map on a display device.

For example, in a car navigation device which is a device capable of displaying a map in 3D, the detection accuracy of the current position of the vehicle is not high enough to distinguish the lane even on roads with two or more lanes on one side. The viewpoint is located at the center of the road.
JP 2002-243485 A JP-A-8-313282

  In the case of the above conventional configuration, when the vehicle turns right or left, on a road with two or more lanes on one side, the position of the vehicle (the position of the driver's viewpoint) and the position of the viewpoint of the 3D display (the center of the road) Different. For this reason, when the vehicle turns right or left, the surrounding scenery that the driver actually sees is different from the 3D display displayed on the display device of the car navigation device, which makes the driver feel confused. was there.

  In addition, the structure described in patent document 1 is known as a structure which changes the viewpoint of 3D display. In this configuration, when the driver operates a joystick or the like, the viewpoint of 3D display can be set to a desired position. However, since manual operation is required, it can be operated only when the vehicle is stopped, and the above problems cannot be solved. Further, Patent Document 2 describes a configuration in which it is determined and displayed whether the vehicle position is on the right side or the left side of the road based on the traveling direction of the vehicle. However, in the configuration of Patent Document 2, it is not possible to determine the traveling lane of a vehicle on a road with two or more lanes on one side.

  Accordingly, an object of the present invention is to provide a map display device that can match the viewpoint of the 3D display displayed on the display device with the viewpoint of the driver as much as possible when the vehicle turns right or left on a road with two or more lanes on one side. To provide.

  The map display device of the present invention is configured so that a map can be displayed in 3D on the display device, and when the vehicle is traveling on a road having two or more lanes on one side, a lane that identifies the travel lane of the vehicle It is characterized in that it comprises a specifying means and a display control means for changing the viewpoint of 3D display based on the specified lane in which the vehicle is traveling.

  According to the above configuration, when traveling on a road having two or more lanes on one side, the traveling lane of the vehicle is identified, and the viewpoint of the 3D display is changed based on the identified traveling lane of the vehicle. Since it comprised, when a vehicle turns right and left, the viewpoint of 3D display displayed on a display apparatus can be matched as much as possible with a driver | operator's viewpoint.

  In the case of the above configuration, it is preferable that the lane identifying means is configured to identify the traveling lane of the vehicle by detecting a right / left turn operation of the turn signal of the vehicle. Furthermore, the lane specifying means may be configured to specify the traveling lane of the vehicle based on the right / left turn information of the route guidance when route guidance is executed by a car navigation device. It is a configuration.

  Still further, it is more preferable that the lane identifying means is configured to identify the traveling lane of the vehicle based on a detection signal output from a sensor for detecting the traveling lane of the vehicle. It is.

  Hereinafter, a first embodiment in which the present invention is applied to a car navigation apparatus will be described with reference to FIGS. First, FIG. 1 is a block diagram schematically showing an electrical configuration of the car navigation apparatus of the present embodiment. As shown in FIG. 1, a car navigation device 1 includes a control device 2, a position detector 3, a map data input device 4, an operation switch group 5, a transceiver 6, an external memory 7, and a display device. 8, a voice controller 9, a speaker 10, a voice recognition device 11, a microphone 12, and a remote control sensor 13.

  The control device 2 has a function of controlling the overall operation of the car navigation device 1, and includes a CPU, a ROM, a RAM, an I / O, and a bus (not shown) for connecting them. Yes. In the case of the present embodiment, the control device 2 has functions as lane specifying means and display control means.

  The position detector 3 includes a geomagnetic sensor 14, a gyroscope 15, a distance sensor 16, and a GPS (Global Positioning System) receiver 17. The position detector 3 is configured to detect the current position of the vehicle while interpolating with the four sensors 14 to 17, and has a highly accurate position detection function. In addition, when the position detection accuracy is not so required, the position detector 3 may be configured by any one of the four sensors 14 to 17 (or a combination of a plurality of sensors). Further, the position detector 3 may be configured by appropriately combining a vehicle steering sensor, a wheel sensor, and the like.

  The map data input device 4 is composed of a reading device capable of reading a storage medium such as a CD-ROM, DVD-ROM, HDD, memory, etc., and includes map data, map matching data, landmark data, and voice recognition dictionary data. It is a device for inputting various data such as. The operation switch group 5 includes a touch switch (touch panel) provided on the upper surface of the display screen of the display device 8 and a mechanical push switch (not shown) provided on the periphery of the display device 8. . Various functions (for example, map scale change, menu display selection, destination setting, route search, route guidance start, current position correction, display screen change, volume adjustment, etc.) are given to the control device 2 by the switch operation of the operation switch group 5. Operation instructions are given.

  The transceiver 6 is composed of, for example, a VICS communication device, a mobile phone (a dedicated mobile phone terminal, a general-purpose mobile phone, or the like). It is possible to receive traffic information, weather information, facility information, advertisement information, etc. provided from the outside (for example, infrastructure such as a VICS system) via this transceiver 6 and transmit vehicle information, user information, etc. to the outside. It is configured to be able to. The external memory 7 includes a storage device such as a memory stick, a memory card, a magnetic tape, and an HDD, and is a device for storing map data, music data, video data, and the like.

  The display device 8 is capable of full-color display, and is composed of, for example, a liquid crystal display or an organic EL. It is configured so that data and the like can be displayed in an overlapping manner. The user is configured to be able to give various operation signals to the control device 2 via the remote control sensor 13 by operating the remote control 18.

  The control device 2 also has a function (route calculation function) for automatically calculating and setting an optimum route (guidance route) from the current position (departure point) to the destination. For example, the Dijkstra method or the like is used as a method for setting the. The destination is configured such that the user can set it by operating the operation switch group 5, the remote controller 18, or the like.

  Furthermore, the control device 2 has a function of displaying the optimum route (guidance route) to the destination on the map displayed on the display device 8 and a map matching process for positioning the current position of the vehicle on the map. It has a function to execute. In addition, an audio device (not shown) mounted on the vehicle is connected to the control device 2 so that the control device 2 can control the audio device.

  Further, the speaker 10 notifies the outside of a predetermined voice (guidance for guidance, explanation of screen operation, voice recognition result, etc.) based on the voice output signal input from the voice controller 9. The microphone 12 inputs the voice generated by the driver or the like to the voice recognition device 11 as an electrical signal. The speech recognition device 11 collates the input speech from the microphone 12 with the vocabulary data (comparison reference pattern) in the recognition dictionary stored therein, and inputs the one with the highest degree of matching to the speech controller 9 as the recognition result. .

  The voice controller 9 controls the voice recognition device 11 and controls talkback output (voice output) through the speaker 10 to a driver who has received voice input. Moreover, the process which inputs the recognition result of the speech recognition apparatus 11 to the control apparatus 2 is performed. The control device 2 performs various processes (for example, map scale change, menu display selection, destination setting, route search execution, route guidance start, current position correction, display screen change, volume based on the recognition result of the speech recognition device 11. Adjustment). Further, route guidance voice information and the like processed by the control device 2 are appropriately output from the speaker 10 via the voice controller 9.

  Next, the operation of the car navigation device 1 configured as described above, particularly control for changing the viewpoint of 3D display displayed on the display device 8 when the vehicle turns right or left will be described with reference to the flowchart of FIG. . Note that the flowchart of FIG. 2 shows the content of the control unit that changes the viewpoint of the 3D display in the control of the control device 2.

  In the above control, first, in step S10, it is determined whether or not the turn signal of the vehicle is operated (operated). In this case, the control device 2 is configured to be able to detect the right / left turn operation of the turn signal of the vehicle. If there is no blinker operation, the process proceeds to "NO" in step S10, and returns to the main routine without doing anything.

  On the other hand, if there is an operation of the winker, the process proceeds to “YES” in step S10, and then proceeds to step S20 to determine whether or not a predetermined time (for example, several seconds) has elapsed after the winker operation. In this case, as the predetermined time, the lane change is also taken into consideration, and the number of seconds is assumed after the blinker operation and after the lane change is completed. The predetermined time may be configured to be specified (set) by the user. In step S20, when the predetermined time has not elapsed, the process proceeds to “NO” and waits for the predetermined time to elapse.

  On the other hand, when the predetermined time has elapsed, in step S20, the process proceeds to “YES”, and the process proceeds to step S30, where the 3D display viewpoint of the map displayed in 3D on the display device 8 is shifted to the right (when the blinker turns right) or left The process to change to (when turn signal turn left) is performed. In this case, when changing the viewpoint of 3D display to the right side or the left side, specifically, the following is performed. The approximate number of lanes is calculated by dividing the width dimension of the road on which the vehicle is traveling by the width dimension (average value) of one lane. From this calculated number of lanes, when there are two or more lanes on one side, when changing to the right side, the position of the viewpoint of the 3D display is changed so that the vehicle is positioned in the rightmost lane of the plurality of lanes on one side. When changing to the left side, the position of the viewpoint of the 3D display is changed so that the vehicle is positioned in the leftmost lane of the plurality of lanes on one side.

  According to this embodiment having such a configuration, when traveling on a road having two or more lanes on one side, the traveling lane of the vehicle is specified, and the 3D display of the 3D display is performed based on the identified traveling lane of the vehicle. Since the viewpoint is changed, it is possible to make the viewpoint of the 3D display displayed on the display device coincide with the driver's viewpoint as much as possible when the vehicle turns right / left on a road with two or more lanes on one side. For this reason, the surrounding scenery that the driver actually sees and the 3D display displayed on the display device match as much as possible, and the driver can be prevented from feeling confused.

  In the above embodiment, the vehicle lane is identified by detecting the right / left turn operation of the turn signal of the vehicle when the vehicle lane is specified. Therefore, the vehicle can easily travel with a simple configuration. A lane can be specified.

  FIG. 3 shows a second embodiment of the present invention. In addition, the same code | symbol (step number) is attached | subjected to the same structure (processing step) as the said 1st Example. In the said 2nd Example, when route guidance is performed by the car navigation apparatus 1 (the control apparatus 2), it is comprised so that the driving | running | working lane of a vehicle may be specified based on the right / left turn information of route guidance. Has been.

  Specifically, first, in step S110, it is determined whether or not route guidance is being executed by the control device 2 of the car navigation device 1. If the route guidance is not being executed, the process proceeds to “NO” in step S110, returns to the main routine without doing anything.

  On the other hand, when the route guidance is being executed, the process proceeds to “YES” in step S110, proceeds to step S120, and is a predetermined distance (for example, several tens of meters) before the point (intersection) to turn right or left. Determine whether the point has been reached. In this case, as the predetermined distance, a distance assumed after completion of the lane change is set. The predetermined distance may be configured to be specified (set) by the user. In step S120, when the vehicle has not reached the predetermined distance before the right / left turn, the process proceeds to “NO” and waits for the arrival.

  On the other hand, when a point of a predetermined distance before the point to turn right or left is reached, in step S120, the process proceeds to “YES”, and then proceeds to step S30, where the 3D display viewpoint of the map displayed in 3D on the display device 8 is changed. The process of changing to the right (when turning right) or left (when turning left) is executed as described above.

  The configurations of the second embodiment other than those described above are the same as the configurations of the first embodiment. Accordingly, in the second embodiment, substantially the same operational effects as in the first embodiment can be obtained. In particular, in the second embodiment, when specifying the travel lane of the vehicle, when the route guidance is executed by the car navigation device 1, the lane is specified based on the right / left turn information of the route guidance. Since it comprised, the structure which pinpoints a lane can be easily implement | achieved by simple structure.

  Further, as a configuration for specifying the lane in which the vehicle is traveling, a configuration may be adopted in which the traveling lane of the vehicle is identified based on a detection signal output from a sensor for detecting the traveling lane of the vehicle. Here, the applicant has already filed an example of a plurality of sensors for detecting the traveling lane of the vehicle and an example of the content of control for identifying the traveling lane of the vehicle based on the detection signals output from these sensors. Japanese Patent Application No. 2004-180602. Therefore, it is preferable that the configuration described in Japanese Patent Application No. 2004-180602 (vehicle travel lane recognition device) is applied to the present invention so as to identify the travel lane of the vehicle.

  Then, after specifying the travel lane of the vehicle, the position of the viewpoint of the 3D display of the map displayed in 3D on the display device 8 may be changed so as to be positioned in the travel lane of the identified vehicle. . Note that the number of lanes on the running road may be calculated by the method described in the process of step S30. Moreover, you may acquire the number of lanes (acquisition from map data) by the method described in the said Japanese Patent Application No. 2004-180602.

1 is a block diagram of a car navigation apparatus showing a first embodiment of the present invention. flowchart FIG. 2 equivalent view showing a second embodiment of the present invention

Explanation of symbols

  In the drawings, 1 is a car navigation device (map display device), 2 is a control device (lane identification means, display control means), 3 is a position detector, 4 is a map data input device, 5 is an operation switch group, and 8 is a display. 9 is an audio controller, 10 is a speaker, 13 is a remote control sensor, and 18 is a remote controller.

Claims (4)

In a map display device configured to display a map in 3D on a display device,
Lane identification means for identifying the lane of the vehicle when traveling on a road with two or more lanes on one side;
A map display device, comprising: a display control unit that changes a viewpoint of 3D display based on the identified lane in which the vehicle is traveling.   The map display device according to claim 1, wherein the lane identifying unit is configured to identify a traveling lane of the vehicle by detecting a right / left turn operation of a turn signal of the vehicle.   The lane specifying means is configured to specify a traveling lane of the vehicle based on right / left turn information of the route guidance when route guidance is executed by a car navigation device. The map display device according to claim 1. 2. The lane identifying means is configured to identify a traveling lane of the vehicle based on a detection signal output from a sensor for detecting the traveling lane of the vehicle. Map display device.

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