JPS58214186A - Map display on vehicle - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] The present invention relates to an on-vehicle map display device.

For example, in the prior art test, there is an overall map that covers all of Japan, a regional map 1 that covers each region such as the Kanto region and Kinki region, and a detailed partial map that divides the region into multiple parts for each frame of photographic film. Being photographed. Control signals are also recorded on the film so that each frame, or each map, can be stored individually. When displaying a desired map, specify the desired map using the control 61 above.
The frame designated by No. 1H4 is called, and the desired map is displayed on the screen mounted on the vehicle using an optical system.

However, recording the above-mentioned control on film requires a high degree of skill. Furthermore, it is difficult to perform MN& on a film on which such control signals are recorded. In other prior art, a map is displayed by preparing a card on which a map is printed and loading the card at any time, but the loading process is cumbersome.

The purpose of the present invention is to provide an in-vehicle map display device that solves two technical problems, can mass-produce video recording media, has excellent operability, and can also be used as a video device. L
The goal is to provide the following.

Hereinafter, the present invention will be explained in detail with reference to the drawings.

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

The in-vehicle map display device α1 has a video tape 2 as a video signal recording medium and 1☆! as a specifying means. It includes a production board 3, a video tape deck 4 as a playback means, a system controller 5 as a control means, and a CRT (cathode ray) display device 6 as a display means. These video tapes 2, operation keyboard 3. Yu1 Tape Denki 4, System Controller 5 and CRT Display Device 6
is mounted on the vehicle.

A plurality of maps are recorded on the videotape 2 in correspondence with one specific control code. For example, there is an overall map that covers all of Japan, and this overall map is divided into multiple blocks.
A plurality of local maps, which are maps for each block, and a plurality of partial maps, each of which is further segmented into (1) fine segments, are neglected. These general maps, regional maps, and partial maps include at least passages. If each regional map is collected, an overall map is formed, and if each partial map is collected, each regional map and the overall map are formed.

As shown in Figure 2, the regional map corresponds to regions such as the Motoko region, the Shikoku region, and the Tokai region. Chapter numbers are sequentially added to the overall diagram starting from rolJ. The tfls map is segmented into a matrix for each local map, as shown in FIG. The control code is 8 bits long, and its lower byte is the row number IIQ+
The row number and column number control numbers correspond to the control code J
16 and are published sequentially in rows and columns in each section on each regional map. Note that "0" in the lower byte and "FF" in the lower and upper bytes are not applied to the partial diagram. - 1ff - 10 bytes are allocated to each local map, and 1yyJ of lower and upper bars are allocated to the overall map c='1t1J. Control code 1-00J
~ "ry" or create one chapter ++I7. Each of these images is recorded by a video camera on a video tape 2 according to chapter numbers and control numbers.

FIG. 4 does not show the fiqllij address map of the frames recorded on the videotape 2 for each map.

6j1 (In the first frame in the driving direction of the videotape 2, indicated by the symbol 7, an overall view is arranged and 1
A control code of "B'F" is recorded. Next “01”~r
The frames of the 08J chapter are arranged sequentially. "01
'' chapter consists of a frame of the original local map, a frame of a partial map of the original local area, and a frame of the entire map.

The frame of the original local map is placed in 1) ahead of the "01" chapter, and a control code of "00" is recorded. At the end of the "01" chapter, a frame of the overall view is placed, and the [FFj control m code is recorded. "10", "20" where the upper byte of the control code is "0"
”...The original local map is placed in the “FO” frame. Control 1 code 101”, “02” to “OF”,
In the frames "11" to "IF", . . . "Fl" to "FE", control number 1 codes individually corresponding to the control numbers are recorded. "021~U08J chapter also"
01" chapter, it consists of a frame for each region map, a frame for a partial map of that region, and a frame for the overall map, and the tlilJ code from l'-tl OJ to "FF" is recorded. . These control codes recorded for each frame are recorded on the audio signal trunk of the videotape 2 using a tone burst method. In this way, each map is recorded and a videotape 2 is created on which the control hood is recorded.If the videotape 2 is recorded, it can be easily reproduced.
l Rikikawa becomes one function. This videotape 2 is loaded into the videotape deck 4 when the map is displayed.

It should be noted that since each frame cannot be abruptly transitioned from the forward or reverse fast-forward Pj raw of the video tape deck 4 to the still image 11) raw, the same map is recorded for two seconds, for example. That is, the same map is recorded over GU frames. Even with this recording, 1800 different maps can be recorded using a 60 minute tape.

In FIG. 4, these 60 frames are shown as one frame for convenience, and it is sufficient if any one of the 60 frames is accessed.

The operation keyboard 3 has a key 11 (01u) for specifying the aforementioned control code. The keys 11 include a hexadecimal key 12 for specifying a control code, a key 13 for specifying an overall view, a key 14 for specifying a local map, and a key 15 for specifying a partial view. Keys 16, 17, 18, and 19 are displayed for specifying the adjacent partial views on the bottom left and right sides of the displayed partial view; It consists of keys 20, 21, 22, and 23 for specifying. Each time each of the keys 12 to 23 is operated, a signal 111 is given from the operation keyboard 3 to the system controller 5.

The system controller 5 has a processing device 24 and a parallel input/output port 25. The system controller 5 also includes a memory (not shown) in which a program is stored;
It has memory for storing data. The processing device 24 receives a signal from the operation keyboard 3 via a port 25.
Judgment 1! Which key was operated via the ? I will be treated. Further, the processing device 24 is supplied with a code signal from the video tape deck 4 for driving the video tape 2 via the boat 25 to the side stand 111 representing a control code corresponding to each map. The processing device 24 controls the video tape deck 4 via the boat 25 based on signals from the operating keyboard 3 and control code signals from the video tape deck 4.
A command signal for forward fast-forward iJJ playback, reverse fast-forward playback, or still image recording 4L is derived.

The video tape deck 4 is an existing video tape deck provided with an interface circuit 26. The interface circuit 26 responds to a command signal from the system controller 55 and operates the video tape deck 4 in a manner equivalent to operating the operation switch without operating an operation switch (not shown) of the video tape deck 4. let Further, if the command signal from the system controller 5 is a command signal for forward playback or M direction fast forward playback,
A mute signal is derived for canceling the servo system of the video tape deck 4 and causing the video tape deck 4 to drive the video tape 2 in the forward or reverse direction at high speed. When the video tape 2 is connected to the video tape deck 4, the interface circuit 26 provides a control code signal to the system controller. A video signal representing a map is also provided from the video tape deck 4 to the CR1 display device 6. When the video tape deck 4 is loaded with a video tape other than the video tape 2, a video signal corresponding to the loaded video tape is provided from the video tape deck 4 to the CR1 display device 6. The in-vehicle map display device configured as described above can also be enjoyed as a video device other than a map display device.In displaying a map, referring to FIG.
In the first step n1, the video tape 2 or the video tape deck 4 is loaded, the power is turned on by the operating switch of the video tape deck 4, and the process proceeds to the second step n2.In the second step n2, the overall view is specified. That is, the key 13 of the operating keyboard 3 is operated.The system controller 5 gives a command signal for forward or reverse fast-forward playback to the video tape deck 4.The video tape deck 4 While driving, a control code signal is given to the system controller 5. When the control code signal from the video tape deck 4 becomes the control hood at the beginning of the video tape 2, that is, the control code before the l-01J chapter is h
When the frame rJ is accessed, a command signal for still image reproduction is given from the system controller 5 to the video tape deck 4. In this way, the third step n
1 in 3. An overall diagram is displayed on the CRT display device 6 as shown in FIG.

In the fourth step n4, the chapter number of the local map is designated. For example, when specifying the Tokai region, C
The bundle ti on the overall diagram displayed on the RT display device ff16
It is sufficient to specify the number "05" for the σ region. That is, the hexadecimal keys 12, 10, 5, and key 14 on the operation keyboard 3 can be operated in this order.The system controller 0-5 sends a command for forward fast forward playback to the video tape deck 4. At the same time as the signal is given, the system controller 5 also receives the control a given from the video tape deck 4.
The control hood "00" placed at the beginning of each chapter in the ++ code signal is counted while being incremented by 1+1. When this count value reaches "5", the system controller 5 starts the video tape deck 4.
A command signal for still image playback is given to the ``00'' frame of the local map of the Tokai region. In this way, in the fifth step n5, a regional map of the Tokai region is displayed on the CRT display device 6 as shown in FIG.

In the sixth step n6, the type of display is determined. That is, in the seventh step n7, the control number of the partial map of the Tokai region is designated. For example, when specifying Lake Hamana, it is sufficient to specify the number "47" corresponding to 1'11S of Lake Hamana on the local map displayed on the CRT display device 6 as shown in FIG. That is, the hexadecimal key 12 of the operation keyboard 3, 14'', ``7'', and the key 14 may be operated in this order. System controller 5
First, a command signal for square fast-forward playback is given to the video tape deck 4. The system controller 5 is
When the control code signal given from the video tape deck 4 becomes "47", a command signal for still picture reproduction is given to the video tape deck 4. Therefore, frame "47" of the partial view of Lake Hamana is accessed. In this manner, a partial view of Lake Hamana is displayed on the CRT display device 6 in the eighth step n8.

In the ninth step n9, the type of display is determined. When approaching the Atsumi Peninsula from Lake Hamana, the 10th
In step nlO, the key 18t-i is not created erroneously.

The system controller 5 reads the upper byte of the control code as -
Decrement r-L I J. First, the system controller 5 gives a command signal for reverse fast-forward playback to the video tape deck 4.

When the control code signal given from the video tape deck 4 reaches "37", the system controller 5 gives a command signal for still picture reproduction.

The frame of the partial view of the H-bi Peninsula is accessed. In this way, the process returns to the eighth step n8 and a partial view of the Atsumi Peninsula is displayed on the CRT display device 6.

Note that when the key 19 is operated, the system controller 5 increments the upper byte of the control code by "+1". When the key 16 is operated, the system controller 5 decrements the lower byte of the control code by r-IJ, and when the key 17 is operated, the system controller 5 increments the lower byte by "+1". Furthermore, when the key 20 is operated, the system controller 5 increments the upper byte of the control code by +IJ and decrements the lower byte by 1-1, and when the key 21 is operated, the system controller 5 increments the upper byte by 1-1. At the same time, the 1st place byte is incremented by ""-1". Further, when the key 22 is operated, the system controller 5 decrements the upper byte of the control code by r-IJ, and then increments the lower byte by "+1", and when the key 23 is operated, the upper byte is "+1".
-1" and decrements the lower byte by "-1".
Decrement. By operating these keys 16 to 23, you can select 8 from the partial diagram displayed on the CRT display device 6.
It becomes easy to move the display to the partial view in the direction. Also, moving the display to a partial map of a different adjacent region, for example, moving the display from a partial map of the Tokai region to a partial map of the Kinki region, is also a bow part. That is, what is necessary is to decrement the column toy of "00" in the control code of the system controller 5 by "-1" and to increment the upper and lower bytes by "+1" or decrement r-IJ.

In order to display the local map of Higashi City in the case where Table 4 is displayed on the CRT display device 〇, proceed from the 9th step n9 to the 11th step nil, and proceed to the 11th step nil. At step 11 nil, the key 14 is operated.The system controller 5 gives the video tape deck 4 the instruction No. 1.4 for the reverse and fast forwarding.Therefore, from the video tape deck 4, the system controller 5
is given a control code signal whose lower bytes are sequentially decremented. When the lower byte becomes "0", the system controller 5 gives the video tape deck 4 a command signal for still image writing. Therefore, the process returns to the fifth step n5 and the local map of the Tokai region with the control code "40" is displayed on the ORT display device 6.

Note that since the local map is placed in the lower byte "0" of each chapter, the access time from the partial map to the local map is quick. It is also easy to return to the minute from the local map, and the access time is quick.

If the key 15 is operated after proceeding to 0410 step nlQ and the 11th step n11, the process proceeds from the 6th step n6 to the 12th step n12. That is, when the key 15 is operated after the keys 16 to 23 or the key 14 are operated, the partial view designated at the seventh step n7 is displayed at the eighth step n8. For example, if a partial view of Lake Hamana is designated as described above, then the Atsumi Peninsula is displayed without designation, and the key 15 is operated, a partial view of Lake Hamana is displayed on the CRT display device 6.

The latest specified control code is stored in the memory of the system controller 5. Therefore, it is possible to return to the designated partial view simply by operating the key 15.

FIG. 6 is a block circuit diagram of another embodiment of the present invention, and parts corresponding to the embodiment shown in the first figure are given the same reference numerals. What should be noted in this example is the in-vehicle map display device W.
The i30 is provided with a position detector 31, a video RAM 32 as a mixing means, and a mixer 33.

The position detector 31 is a device for knowing the current position of the vehicle, and includes a direction detector 34 that detects changes in the direction of the vehicle, and a travel distance detector 35 that detects the travel distance of the vehicle. The direction detector 34 is, for example, a gyroscope. The mileage detector 35 is a device that derives a pulse signal according to the rotation of a car tire, for example. This direction detection 8a
34 and a mileage detector detect the current location of the vehicle.

A position detection signal of 8 bits per row and column is provided from the position detector 31 to the system controller 5. The system controller 5 converts this position detection signal into a video RA.
Store in M32. The position detection signal stored in the video RAM 32 is provided to the mixer 33 as a video signal representing the current position and travel route. In the mixer 33,
A video signal representing the map from the video tape deck 4 is also provided. The mixer 33 mixes the video 4u from the video RAM 33 and the video signal from the video tape deck 4 and supplies it to the ORT display device 6. Therefore, a map is displayed on the CRT display device 6 as shown in FIG. 7, and the current position and travel route of the vehicle 4 are displayed as dots on the map. Therefore, the current location and travel route of the vehicle can be easily understood, and the desired destination point can be taken without error along the shortest course.

The system controller 5 also has information about the position of the peripheral part of each map, that is, xlNx9 on the X axis indicated by the virtual line in FIG.
and Y1 to Y9 on the Y axis are stored respectively. 7th
As shown in the figure, when the car approaches the Atsumi Peninsula from Lake Hamana, that is, when the dot comes to the X5 axis, the Y axis remains constant and the X axis moves as X5-X4 and X6-X5. The system controller 5 has a video RAM
The current dot position is read out from the dot, and it is constantly searched to see if the dot position is at X1-X9 on the X axis and Y1 to Y9 on the Y axis. Therefore keys 16-23
The map of the region currently being traveled is automatically accessed without any operation.

As another embodiment of the present invention, the video signal recording medium may be a video disk, a magnetic sheet, etc. In that case, the reproduction means may be of any type as long as it can be controlled by the control means according to the video signal recording medium.

Further, the display means may be a television receiver.

As described above, according to the present invention, the hL of the video signal recording medium
ffj can be easily done. Furthermore, since a desired map can be displayed by simply operating the keys of the designating means, operability is improved. Furthermore, it can be used as a video device.

[Brief explanation of drawings]

Fig. 1 is a block circuit diagram of an embodiment of the present invention, Fig. 2 is a diagram for explaining the overall diagram, Fig. 3 is a diagram for explaining a regional map, and Fig. 4 is a diagram for explaining each map on a videotape. FIG. 5 is a flowchart for explaining its operation, FIG. 6 is a block diagram M6 of another embodiment of the present invention, and FIG. FIG. 3 is a diagram for explaining the operation. l, 30... Vehicle map display device, 2... Video tape, 3... Operation keyboard, 4... Video tape deck, 5... System controller, 6... CR
1 display device ζN511.13-23...key, 12.
... Hexadecimal key, 24... Processing device t'i, 25...
・Boat, 26...Interface circuit, 31...
・Position detector, 32...Video RAM, 33...Mixer Representative Patent Attorney Kei Nishi Part Figure 2 Figure 3 Figure 1 Figure 5 Figure 6

Claims (2)

[Claims] (1) Conversion of national map to individual control 17ijl code J+
j, +1. Press the key to specify the 1-code (11#) and the video signal recording medium corresponding to the 1j11 code 6III code. !!IjL, a reproduction means for outputting a video signal of the map specified by ``121j'', a control means for giving a command signal to the reproduction means in response to the signal from the designated card 121j; An in-vehicle map display device comprising: display means for displaying. (2) a position detector that detects the current position of the vehicle and provides a position detection signal to the control means; and a position detector that stores the position detection signal transmitted through the control means;
2. The in-vehicle map display device according to claim 1, further comprising mixing means for mixing the stored position detection signal and the video signal and applying the mixture to the display means.