JPH07159185A - Location and navigation device - Google Patents

Abstract

PURPOSE:To reproduce a vehicle traveled, way after completion of the travel by providing a travel way data recording means to record travel way data of a vehicle and regenerate it. CONSTITUTION:A location processing part 1 is composed of a GPS, for example, to computation-process the position, speed, bearing, etc., of a vehicle, and output these into a display processing part 2 through a changing switch 6. The processing part 2 reads a map corresponding to the vehicle position from a map data base 3, and displays 4 it in a proper scale. The processing part 2 also displays 4 the current vehicle position on the displayed map. A travel way data recording part 5 receives travel way data from the processing part 2 to be recorded during run of the vehicle. During the run of the vehicle, the switch 6 is changed to the processing part 1 side, the current position of the vehicle is displayed 4 by a signal from the processing part 2, and records 5 vehicle position data simultaneously. In regenerating the traveled way data, the switch 6 is changed to the recording part 5 side. Regeneration is possible from a desired position.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a location and navigation device for displaying a map on a display mounted on a vehicle and displaying the current position and traveling direction of the vehicle on the map. The present invention particularly relates to a location and a navigation device that can reproduce a trajectory of a vehicle after the vehicle has traveled and sequentially display the trajectory on a display.

[0002]

2. Description of the Related Art There is known a location and navigation device that displays a map on a display provided in a driver's seat of a vehicle and displays the current position of the vehicle and the traveling direction of the vehicle on the map. This location and navigation device
A map of the vicinity where the car is currently traveling is displayed, and the current position of the car is displayed on the displayed map.

In such a location and navigation device, a device equipped with a function of displaying a trajectory of the vehicle on a map displayed on a display is becoming a standard device.

[0004]

DISCLOSURE OF THE INVENTION Display of the traveling locus of the vehicle in the above-mentioned conventional device is performed by displaying the locus that the vehicle has traveled so far with respect to the map currently displayed while the vehicle is traveling. It's just something to display while leaving. On the other hand, by displaying the traveling locus of the vehicle in various forms, the location and the navigation device become enjoyable for the user, and the functions of the location and the navigation device can be improved.

It is an object of the present invention to improve the functions of the location and navigation device by making it possible to reproduce the traveling locus of the vehicle in the location and navigation device after the traveling is completed.

[0006]

In order to achieve the above object, the present invention provides a location processing means for detecting the current position of a vehicle, a map database storing map data, a display, and a vehicle detected by the location processing means. A map and vehicle display processing means for reading out map data including the current position of the vehicle from the map database, displaying the map on the display, and displaying the current position of the vehicle on the map displayed on the display. In the provided location and navigation device, by providing the traveling locus data recording means capable of recording the traveling locus data while the vehicle is traveling and reproducing the recording, the traveling locus data reproduced by the traveling locus data recording means. Is displayed on the map displayed on the display.

[0007]

By reproducing the traveling locus data recorded in the traveling locus data recording means after the vehicle has traveled, for example, the beginning to the end of the traveling can be reproduced in sequence on the map. At the time of this reproduction, it is possible to start the reproduction from an arbitrary time point, it is possible to change the reproduction speed, and the scale of the map displayed on the display device is arbitrary. It is also possible. By reproducing the traveling locus in various forms as described above, the enjoyment after the driving such as the reflection on the driving is newly increased, and the location and the function of the navigation device can be improved.

[0008]

Embodiments of the present invention will be described below with reference to the drawings. In addition, in each drawing, those having the same function are denoted by the same reference numerals, and overlapping description will be omitted. (Embodiment 1) FIG. 1 is a block diagram showing a location and navigation device according to an embodiment of the present invention.

The location processing unit 1 is composed of, for example, a GPS, calculates the position, speed, azimuth and the like of the vehicle and outputs them to the display processing unit 2 which performs map and vehicle display processing via the changeover switch 6. To do. Display processing unit 2
Reads out a map corresponding to the position of the vehicle from the map database 3. The map database 3 is composed of a CDROM or an IC card which stores map data.
The display processing unit 2 displays the map read from the map database 3 on the display 4 at an appropriate scale.

The display processing unit 2 also displays the position of the vehicle on the map displayed on the display 4. Since the display of the current position can be performed by a conventionally known method, the description thereof will be omitted. A traveling locus data recording unit 5 is provided which receives traveling locus data from the display processing unit 2 while the vehicle is traveling and records the traveling locus data.

The changeover switch 6 is switched to the location processing section 1 side when the vehicle is running, and the current position of the vehicle is displayed on the map of the display 4 by a signal from the location processing section 1. At the same time, the vehicle position data is recorded in the recording unit 5. The changeover switch 6 is switched to the running locus data recording unit 5 side when reproducing the running locus data.

The recording unit 5 can use an IC memory in the CPU of the location and the navigation device, but it is also possible to use a floppy disk, an IC card or the like as an external recording means.
If the traveling locus data is recorded in the external recording means, it is possible to accumulate past traveling locus data as a library.

An example of the structure of the traveling locus data recorded in the recording unit 5 is shown in FIG. As shown in the figure, the vehicle position data represented by latitude X and longitude Y and the traveling direction data of the vehicle are sequentially numbered and recorded on the recording medium 7 in the recording unit 5. The time pitch of the data when recording on the recording unit 5 can be set arbitrarily. Normal,
The GPS calculates the position data and the like at 1 second intervals and outputs the result. When recording the travel locus data in the recording unit 5, the recording capacity can be reduced by thinning out the data output at 1-second intervals, for example, at 5-second intervals.

Next, details of the operation of this embodiment will be described with reference to the drawings. FIG. 3 is a flowchart showing the operation of the location and the navigation device as a whole. at first,
In step S11, it is determined whether or not traveling reproduction is selected. To select the travel reproduction, "1" is input to the register "travel reproduction" by an appropriate input means, and "0" is input to cancel the travel reproduction.

This input means is interlocked with the changeover switch 6 shown in FIG. The changeover switch 6 is switched to the recording unit 5 side when traveling reproduction is selected, and is switched to the location processing unit 1 side when traveling reproduction is canceled. When the travel reproduction is not selected in step S11 (N), the process proceeds to step S13, and the location processing by normal GPS or the like is performed. During this period, the vehicle position and the like are recorded in the recording unit 5 as described above.

When the travel reproduction is selected (Y), the process proceeds to step S12, the travel reproduction processing described later is performed, and the location processing of the vehicle being reproduced is performed.
In step S14, according to the vehicle position information and the like obtained by normal location processing or traveling reproduction,
The position and traveling direction of the vehicle are displayed on the map of the display unit 4. Then, in step S15, after a lapse of the predetermined time T seconds, the process returns to step S11 again, and the same operation is repeated thereafter.

4 to 7 show step S of FIG.
It is a flow chart explaining the processing contents of running reproduction of No. 12. When the running reproduction operation of FIG. 4 is started, PTR = 0, PITCH = 1, and
PLAY = 0 is set respectively. Step S21
At step S22, the reproduction data pointer is set to "0", and the operation key can be input at step S22.

At this time, on the display 4, as shown in FIG. 8, a display 11 of "REPLAY in progress" and a display 1 of operation keys are displayed.
2 is played. This operation key display 12 includes a "PLAY" key 13 for instructing a normal play, a "STOP" key 14 for stopping the progress of the play, a "STEP" key 15 for performing the reproduction step by step, and a fast-forward. There are provided a “CUE” key 16 for making a rewind and a “REW” key 17 for making a fast rewind.

Further, the display 12 is provided with a pitch designation section 18 for setting a pitch at the time of reproduction. In this pitch designation 18, a numerical value designating the pitch is input.
Further, a direct designating section 19 for directly designating a point to start reproduction is provided. A cursor 20 is displayed here, and by setting the left end of the direct designation portion 19 as the traveling start position and the right end as the traveling end position, and moving and setting this cursor position to an appropriate place from the left end to the right end, traveling The reproduction can be reproduced from any position corresponding to the set position.

The selection and setting of the above keys are performed by operating the cursor and buttons with a mouse. In addition,
Thus, instead of using the mouse, display 11,1
It is also possible to directly operate the display portion with a finger by using 2 as a touch switch. Furthermore, when a CD is used as the map database 3, the operation keys of this CD can also be used as the operation keys during running reproduction.

When the above setting is completed, the operation key display 12 disappears from the screen, and the traveling reproduction is performed as shown in FIG. This FIG. 9 will be described later. Returning to FIG. 4, steps S23 to S27 for designating the type of reproduction proceed in the direction of YES when the operation keys 13 to 17 are turned on, and as shown in steps S31 to S35. In the "PLAY" register, each numerical value corresponding to each selected operation key is set.

When the position of the cursor 20 is set in the direct designating section 19 of FIG. 8, step S2 of FIG.
From 8 to step S36, register "PTR",
Numeric value "Direct" specified in the direct specification section 19
Is set. When the numerical value is set by the pitch specifying section 18, the process proceeds from step S29 to step S37, and the specified numerical value is set in the register "PITCH".

When the stop of the reproduction of running is designated, the process proceeds from step S30 to step S38, and "0" is set in the register "running reproduction". After that, returning to the flow of FIG. 3, the route from step S11 to step S13 is selected, and the traveling reproduction is not performed. 4 and 5
If any setting is made in step S41 of FIG.
To step S42 and subsequent steps.

If any of the plays in steps S23-27 is selected, "PLA" is selected in steps S31-35.
Depending on the contents set in the "Y" register, step S
From 42 to step S45, the following operations are performed in the Y direction. When the normal play is selected, the process proceeds from step S43 to step S49, and the register "P
Vehicle position data corresponding to the number designated by "TR" is set in the register "vehicle position". Thereafter, returning to the flow of FIG. 3, the vehicle position corresponding to the vehicle position data is displayed on the map in step S14. For normal play,
This operation is repeated.

The value of the register "PTR" is incremented by 1 each time the operation is repeated. Therefore, the vehicle position is added on the map one after another,
The running trajectory of the vehicle is reproduced over time. Further, in the case of normal play, the register "PTR" is set to 0, so the starting point of the traveling reproduction is the traveling starting point of the vehicle.

FIG. 9 shows an example of the screen of the display 4 when the normal play is selected. In the figure, 11 is an indication that the running is reproduced, 21 is the vehicle position, 22 is the traveling direction of the vehicle, 23 is the scale, and 24 is the azimuth. Also,
Reference numeral 25 is a display of the traveling locus. When stop of play is selected, the process proceeds from step S41 to step S46,
Since the vehicle position returns to FIG. 3 without being updated, the traveling locus of the vehicle stops at the position where the stop of the play is selected.

When the reproduction by one step is selected, the process proceeds from step S42 to step S48, 0 is set in the register "PLAY" and the process proceeds to step S49. In step S49, the process of advancing the vehicle position by one step is performed as described above, but when returning to the flow of FIG. 6 again, since 0 is set in the register "PLAY", the process proceeds from step S41 to step S46. The vehicle position does not change until the "STEP" key is pressed again. Therefore, each time the "STEP" key is pressed, the vehicle position is displayed on the display unit so that the vehicle position advances one step at a time.

When the fast forward is selected, the process proceeds from step S44 to step S50, and the vehicle position data corresponding to the number designated by the register "PTR" is set in the register "vehicle position". Next, when proceeding to step S51,
A value obtained by multiplying the value set in the register "PITCH" by the number n of times of passing through step S51 is added to the register "PTR". By repeating this flow,
The vehicle position displayed on the display is fast-forwarded and reproduced by the designated pitch.

When fast rewind is selected, the process proceeds from step S45 to steps S52 and 53. This step S52,
In 53, the same operation as in steps S50 and 51 at the time of fast-forwarding is performed, but in step S53, the value of the register "PTR" is subtracted from the current vehicle position by the pitch designated in step S37. By repeating this flow, the vehicle position displayed on the display device is rewound by the designated pitch and reproduced.

When the direct is selected in step S28 of FIG. 5, the designated direct position is set in the register "PTR" in step S35.
In the reproduction from steps S42 to S45 in FIG. 6, the reproduction is started with the designated direct position as the starting point. When the vehicle travels in the forward direction and the vehicle position reaches the final position (PTRMAX), step S4
6 to steps S54 and 55, the register "PT
R "and the register" PLAY "are set to the initial value 0, and the traveling reproduction is finished. When the vehicle travels in the opposite direction and the vehicle position reaches the travel start position, the process proceeds from step S47 to steps S54 and 55, and the initial value 0 is set in the register "PTR" and the register "PLAY". The driving reproduction is completed.

(Embodiment 2) In the traveling reproduction described above, the scale of the map is manually changed to an appropriate value before or during the play. However, it is also possible to automatically switch the scale of this map according to the vehicle speed when the travel is reproduced. This example will be described below.

FIG. 10 is a block diagram showing the location and navigation device of the second embodiment. In the following description, only points different from the first embodiment will be described. In this embodiment, the determination unit 31 is provided,
The position signal output from the location processing unit 1 or the traveling locus data 5 is input. The determination unit 31 detects the vehicle speed from the signal of the location processing unit 1 or the recording unit 5, determines the scale of the map corresponding to the vehicle speed, and outputs the scale signal to the display processing unit 2.

The determination unit 31 sets a speed of 20 km / h as a reference value, a speed higher than that and a speed lower than 20 km / h, and the scale of the map displayed on the display 4 at the time of high speed is 1/25000 of the high scale.
At low speed, the scale is reduced to 1/6500. The display processing unit 2 displays the map on the display 4 according to the scale determined by the determination unit 31. Each of these numerical values can be changed as appropriate. Further, the number of stages for switching the vehicle speed and the scale is not limited to two stages, and it is possible to have three or more stages.

FIG. 11 shows a map when the vehicle is traveling at high speed, and FIG. 12 shows a map when the vehicle is traveling at low speed. When the vehicle is traveling at high speed, FIG.
As shown in, a high-scale, wide-range map is displayed on the display unit 4. Further, when the vehicle is traveling at a low speed or stopped, the map displayed on the display 4 is a low-scale detailed map as shown in FIG.

Next, details of the operation of this embodiment will be described with reference to the drawings. FIG. 13 is a flowchart showing the operation of automatically switching the scale of the map displayed on the display 4.
First, in step S61, a map with an appropriate scale is displayed on the display unit 4. When the automatic mode is not selected, the process goes from step S62 to step S72, or step S62, step S63, step S71.
Via, the vehicle position is drawn on the map in step S72.

When the automatic mode is selected, the routine proceeds to step S64, where the own vehicle traveling speed SpC is compared with the map switching speed SpD (20 km / h in this example) which is a reference for switching the map scale. If the vehicle traveling speed SpC is lower than the map switching speed SpD (Y), step S
65, the own vehicle traveling speed SpC is the map switching speed SpD.
If it is faster (N), the process proceeds to step S68.

In step S65, the map MapN currently displayed and the low-speed map MapD (1/65000 in this example) are compared. If the map scale MapN currently displayed is the low-speed map scale MapD (Y), the process proceeds to step S72 and the vehicle scale is not changed and the vehicle position is drawn on the map. Step S6
If the map scale MapN currently displayed in 5 is not the low speed map scale MapD (N), the map scale MapN currently displayed in step S66 is set to the low speed map scale Ma.
It is replaced with pD, the map displayed on the display 4 is redrawn in step S67 by the low speed map scale MapD, and the process proceeds to step S72.

In step S68, the map scale MapN currently displayed and the high-speed map scale MapU (1/25000 in this example) are compared. If the map scale MapN currently displayed is the high-speed map scale MapU (Y), the process proceeds to step S72 and the map scale is not changed and the vehicle position is drawn on the map. Step S6
If the map scale MapN currently displayed in 8 is not the high-speed map scale MapU (N), the map scale MapN currently displayed in step S69 is set to the high-speed map scale Ma.
It is replaced with pU, and in step S70, the map displayed on the display 4 is redrawn by the high-speed map scale MapU, and the process proceeds to step S72.

In step S72, the vehicle position and the traveling direction are displayed on the map displayed on the display 4 by the operation described above. Parameters such as the map switching speed SpD, the high-speed map scale MapU, and the low-speed map scale MapD in the above-described embodiments can be fixed or variable. A procedure for setting these parameters when these parameters are variable will be described below with reference to the drawings.

FIG. 14 is a flow chart for explaining the operation of the scale automatic switching setting process. When the switch for performing the setting process is turned on in step S81, the display 4
The setting screen 26 shown in FIG. 15 is displayed above. On this screen 26, eight scales are displayed side by side for each of the items “normal” and “enlarge”. In addition, a vehicle speed of 10 to 50 km / h is displayed in the "switching speed" item. When selecting desired numerical values for these items, the numerical values are selected by moving the cursor with the mouse and operating buttons.

When setting the high speed map scale MaPU,
Select the desired value for the scale of the "normal" item. When setting the low-speed map scale MaPD, the desired value of the scale of the item of "enlargement" is selected. When setting the map switching speed SpD, the cursor in the item "Switching speed" is set to the desired hourly speed. When the cursor position is selected as described above and then "SET" is selected and the button operation is performed, each parameter is set according to the flowchart of FIG.

[0042]

According to the present invention, in the location and navigation device, the traveling locus of the vehicle can be reproduced after the traveling is completed, and the functions of the location and navigation device can be improved. Further, according to the present invention, in the location and navigation device, the scale of the map displayed on the display is automatically changed, and the operation for changing the scale of the map is unnecessary.

[Brief description of drawings]

FIG. 1 is a block diagram of a first embodiment of the present invention.

FIG. 2 is a conceptual diagram showing details of data in a recording unit in FIG.

FIG. 3 is a flowchart showing the operation of the entire circuit of FIG.

FIG. 4 is a flowchart (No. 1) explaining the operation of traveling reproduction.

FIG. 5 is a flowchart (part 2) for explaining the operation of traveling reproduction.

FIG. 6 is a flowchart (No. 3) explaining the operation of traveling reproduction.

FIG. 7 is a flowchart (No. 4) explaining the operation of traveling reproduction.

FIG. 8 is a diagram showing a screen of the display device when the travel reproduction is set.

FIG. 9 is a diagram showing a screen of the display device when the running is reproduced.

FIG. 10 is a block diagram of a second embodiment of the present invention.

FIG. 11 is a map displayed when the vehicle is traveling at high speed according to the embodiment of the present invention.

FIG. 12 is a map displayed when the vehicle is traveling at a low speed according to the embodiment of the present invention.

FIG. 13 is a flowchart illustrating a scale automatic switching operation of FIG. 11.

FIG. 14 is a flowchart illustrating an operation at the time of setting the scale automatic switching operation of FIG. 11.

FIG. 15 is a diagram showing a screen of the display unit during setting in FIG.

[Explanation of Codes] 1 ... Location processing unit 2 ... Map and vehicle display processing unit 3 ... Map database 4 ... Display device 5 ... Running locus data recording unit 6 ... Changeover switch 7 ... Recording medium 11 ... Running reproduction display 12 ... Operation Display of keys 21 ... Display of vehicle position 22 ... Display of traveling direction of vehicle 23 ... Display of reduced scale 24 ... Display of direction 25 ... Display of traveling locus

Claims (4)

[Claims] 1. A location processing means for detecting a current position of a vehicle, a map database storing map data, a display, and map data including the current position of the vehicle detected by the location processing means are read from the map database, and In a location and navigation device equipped with a map and vehicle display processing means for displaying a map on the display and displaying the current position of the vehicle on the map displayed on the display, a travel locus during traveling of the vehicle A traveling locus data recording means capable of recording data and reproducing the recording is provided, and the map and vehicle display processing means displays the traveling locus data reproduced by the traveling locus data recording means on the display. Location and navigation features characterized by being displayed on a map Place 2. The location and navigation device according to claim 1, wherein a reproduction speed at the time of reproducing the travel locus data is variable. 3. The location and navigation device according to claim 2, wherein when the traveling locus data is reproduced, the reproduction can be started from an arbitrary point of the traveling locus data. 4. When reproducing the traveling locus data, the scale of the map displayed on the display device can be automatically switched according to the traveling speed of the vehicle.
Described location and navigation device.