JPH01195319A - Position display device - Google Patents

Abstract

PURPOSE:To facilitate a data input at the time of executing a replacement of an atlas by executing a graphic display on map data which has been stored in a storage means and position information which has been detected by a position detecting means, and also, making the storage means replaceable. CONSTITUTION:On a frame 31 of a display device, transparent optical fiber groups 32, 33, an input key group 34 and a character display part 35 are provided, and also, in the frame 31, a control circuit 36 is contained. On the control circuit 36, a detachable storage means 38 for storing the data in an atlas is attached. The control circuit 36 contains a microcomputer, turns on an optical fiber and executes a position display, based on map data which has been stored in the storage means 38 and position information which has been detected by a position detecting means. The storage means 38 can be replaced freely by opening and closing a cover 37, and since it will suffice that the storage means 38 is prepared in every atlas, a troublesome work for setting the data into the storage means 38 is not required, and the operation is facilitated.

Description

[Detailed Description of the Invention] [Object of the Invention] (Industrial Application Field) The present invention relates to a device for displaying the position of a moving object such as an automatic type, a ship, or an aircraft, and is used in a navigation device or the like. Ru.

(Prior Art) Conventionally, as a position display device for a moving object, for example, Japanese Patent Laid-Open No. 61
- Like the in-vehicle navigation device shown in Publication No. 75375, etc., the current position is calculated from the distance traveled and the direction of travel of the vehicle, and a map is read out from the storage device on a display device such as a CRT or CD. Devices that display information and current location together are known.

Furthermore, Japanese Utility Model Application Publication No. 56-12300 discloses a mobile object position display device that displays the current position on a transparent matrix display and displays the position of the mobile object by placing a map under the matrix display. has been done. This allows multiple maps to be used by changing the display magnification and display area according to the map. The matrix display is made of a transparent plate and has many transparent electrodes horizontally and vertically, and by applying signals to the vertical and horizontal electrodes, the intersection points can emit a single color or become opaque. (e.g. plasma display, liquid crystal display).

(Problems to be Solved by the Invention) In the technology disclosed in Japanese Unexamined Patent Publication No. 61-75375, it is necessary to accurately store map information, such as roads and place names, in the device, so the capacity of the storage device is limited. It had to be huge. Also, due to physical capacity limitations, only maps of designated areas could be used.

Furthermore, in the mobile object position display device disclosed in Japanese Utility Model Application Publication No. 56-12300, it is necessary to change data such as changing the display magnification and changing the display district each time according to the map. For this reason, when moving objects travel long distances, they must use maps with low resolution. If you want to use a high-resolution map, you will need to switch maps. At this time, the data manual method is complicated and difficult to operate, and
Easy to make mistakes.

Therefore, in the present invention, as described in 1. The technical problem is to display one's own position or the position of an object without increasing the capacity of the means, and to easily input data when exchanging atlases.

[Structure of the invention]

(Means for solving the problem) The technical measures taken to solve the above technical problem are:
A position display device includes a frame having a space for installing an atlas, a transparent display installed within the frame, a position detecting means for detecting the position, and a removable storage means for storing data in the atlas. and a control circuit for displaying graphics on the display based on the map data stored in the 219 means and the position information detected by the position detection means.

Furthermore, the frame is further provided with character display means for displaying an atlas exchange command, and the control circuit detects the detected position on the map in the atlas based on the position information detected by the position detection means and the data stored in the storage means. When it is determined that there is no atlas, the character display means is instructed to display an atlas exchange command.

(Operation) According to the technical means, the control circuit displays a graphic on the display based on the map data stored in the storage means and the position information detected by the position detection means. At this time, the storage means can be replaced.

Further, when the position detected by the position detection means is not on the map, an atlas exchange command is displayed on the character display means.

(Embodiment) Hereinafter, an embodiment in which the present invention is applied to a navigation system on a moving body will be described based on the drawings.

As shown in FIG. 1, this embodiment is comprised of an antenna 10, a GPS receiver 20, a display device 30, and an atlas 50. The GPS receiver 20 is a known receiver that measures its own position using radio waves from three or four artificial satellites. The inside of the CPS receiver 20 includes a receiving section 21, a data switching section 22, an orbit data demodulating section 23, a pseudorange measuring section 24, a positioning calculation section 25, and a satellite switching section 26. The signals received by the antenna 10 and the receiving section 21 are separated into orbit data and distance data, and then sent to the positioning calculation section 25.
sent to. The positioning calculation unit 25 calculates its own latitude and longitude and transmits it to the display device 30. As described above, the current position is detected by the antenna IO and the GPS receiver 20 (position detecting means).

FIGS. 2a and 2b show an embodiment of the display device 30. FIG. This display device 30 includes transparent optical fiber groups 32 and 33, an input key group 34, and a character display section 35 on a frame 3I.
(Character display means) is provided. Also frame 3
A control circuit 36 is built into the device 1. Control circuit 36F
An external ROM 38 (denoted as jQ means) is removably attached to the ROM. This external ROM 38 can be replaced freely by the operator by opening and closing a lid 37 on the frame 31. This external ROM 38 stores data such as the number of pages of a predetermined atlas and the coordinates of the origin of each page, as will be described later.

The optical fiber groups 32 and 33 are arranged in a grid pattern on the frame 31 so as to be perpendicular to each other. Further, at one end of each of the optical fibers of the optical fiber groups 32 and 33, a light emitting diode of each of the light emitting diode groups 40 and 41 is disposed (see FIG. 3a). The light emitting diode groups 40 and 41 are mounted on a substrate 42 disposed within the frame 31, as shown in FIGS. 3a and 3b. The substrate 42 has optical fiber groups 32 and 33.
A V-shaped groove 42a is provided for positioning, and fixes the optical fiber groups 32 and 33. In addition, in order to protect the optical fiber groups 32 and 33, two transparent plates 3 are installed so as to sandwich the optical fiber groups 32 and 33 from above and below.
9 and 43 are arranged on the frame 31.

Each of the optical fibers in the optical fiber groups 32 and 33 has a roughened part of its cladding, and the cladding diffusely reflects light to emit light. Therefore, when each of the backs of the light emitting diode groups 40 and 41 is turned on, light appears to be emitted from the optical fiber in a cross shape as shown in FIG.

Manual key group 341 character display section 35 of the display device 30 described above
2 light emitting diode groups 40 and 41. The external ROM 3B and the control circuit 36 are connected by a circuit shown in FIG. The manual key group 34 includes a numeric keypad 34a and a setting key 34.
It is composed of b. In addition, the character display section 35 is an LCD
(Liquid crystal display) 35a and L CD control circuit 35b
It consists of The LCD control circuit 35b is the control circuit 36
The LC displays alphanumeric characters, kanji, etc. based on signals from
Controls D35a.

The control circuit 36 includes a CPU 3 which is a microcomputer.
6a, and a known LED drive circuit 36b and 36c for lighting the light emitting diode groups 40 and 41. The CPU 36a operates based on the flowchart shown in FIG.

The operation of the CPU 36a will be explained with reference to FIG. First, when the CPU 36a starts, the memory and input/output ports within the CPU 36a are initialized in step 60. In steps 60 and 61, the external ROM 38
If the external ROM 38 is not connected, the display section 35 is instructed to display "Please connect external ROM".

Next, the map book number is read from the external ROM 38 (step 63). After that, the GPS receiver 20 reads the current latitude and longitude of the user. If the own latitude and longitude cannot be read here, for example, if the GPS receiver 20 is behind a building and cannot receive signals from three or more satellites, the display unit 35 displays warning information that "Measurement is not possible." Thereafter, the user reads the latitude and longitude of the user from the GPS receiver 20 again (steps 64, 65 and 66).

After searching for its own latitude and longitude, the optimum page number is searched (step 67). The seventh memory is stored in the external ROM38.
An optimal page number map as shown in the figure is stored. On this optimal page number map, optimal page numbers for latitude and longitude are written. The optimum page number can be read from this optimum page number map and the own latitude and longitude read from the cps reception n, 20. still,
Depending on the latitude and longitude, a position outside the map within the atlas may be indicated, but in this case, the optimal page number is set to "0". After searching for the optimal page number, the optimal page number is
0'', the character display section 35 displays an atlas exchange command, ``Atlas Unmanchi'', and the process proceeds to step 61.
Return to If the optimal page number is other than "0", the character display section 35 displays the optimal page number.

After displaying the optimum page number on the character display section 35 for a few seconds, the character display section 35 displays the user's current latitude and longitude read from the GPS receiver a20.

After this, in step 72, an optimum line is searched for determining which optical fiber among the optical fiber groups 32 and 33 is to be lit.

The external ROM 38 stores a table as shown in FIG. 8 showing the coordinates of point A, which is the origin of each page, and point B (see FIG. 4), which is the maximum point. The optimal line is determined from this table and the user's current latitude and longitude read from the GPS receiver 20. Next, an example of a method for searching for an optimal line will be shown. The coordinates of point A are (Ax, Ay), and the coordinates of point B are (B
x, By), and when the own coordinates are (X, Y), the line that should be lit is the line that corresponds to the latitude of (Ax-X) / (Ax-Bx) X (1+1) rounded off, The longitude is (Ay-Y
)/(Ay-By)x The line corresponds to the value obtained by rounding off (J+1). (Here, I is the number of optical fiber groups 32 indicating longitude, and J is the number of optical fiber groups 33 indicating latitude.) After this, the LED drive circuit is activated to light up the light emitting diodes corresponding to the optimum line. 36b and 36c. The above optimal line search method can also be performed by storing the scale of the map of the page in place of the maximum point B in the external ROM 38.

In the above embodiment, after activating the device, the operator can know the current location by simply preparing the desired atlas, opening the page shown on the character display section, and setting it under the display device. Can be done.

screen, input key group 34, type of atlas to correspond to multiple types of atlas! This is for man-powering T.

〔Effect of the invention〕

According to the present invention described above, since the storage means can be removed from the position display device once a day, it is possible to prepare a storage means for each atlas. For this reason, the author of the atlas can write the atlas at the same time as the notes 1 ((
By providing one means, general users are freed from the troublesome work of setting data in the storage means, and operations become easier.

Furthermore, data in the atlas is stored in the storage means, such as the number of pages in the atlas and the coordinates of the origin of the map on each page.

Since the scale etc. are memorized, there is no need to enter any data afterward, just by exchanging the map. Since a huge amount of data such as place names is not required, the capacity of the storage means may be small.

Also, even when changing atlases, the same storage capacity is sufficient. Therefore, the position display device of the present invention can be used immediately at any location within the range described in a commercially available atlas, so it has high versatility.

Furthermore, if the location is not on the map, it will be displayed, so it is possible to continue displaying the location simply by exchanging the map.

[Brief explanation of the drawing]

FIG. 1 is a configuration diagram of a navigation device that is an embodiment of the present invention. 2a and 2b are an external view and a sectional view of the display device of the navigation device of FIG. 1. FIG. Figures 3a and 3b are partial cross-sectional views of the display device of Figure 2a. FIG. 4 is a diagram showing an example of use of the display device of FIG. 2a. FIG. 5 is a circuit diagram of the control circuit of the display device of FIG. 2a. FIG. 6 is a flow chart of the control circuit of FIG. FIG. 7 is an optimal page number map stored in the external ROM of FIG. FIG. 8 is a table showing the coordinates of point A, which is the origin, and point B, which is the maximum point, of each page stored in the external ROM in FIG. DESCRIPTION OF SYMBOLS 10... Antenna, 20... GPS receiver, 21... Receiving part 21, 22... Data switching part,
23... Trajectory data demodulation unit, 24... Pseudo distance measurement unit, 25... Positioning calculation unit, 2
6... Satellite switching unit, 30... Display device, 31... Frame, 32.33... Optical fiber group, 34... Input key group, 34 a-10 key, 34 b-... settings key,
35...Character display section (character display means), 35a...
LCD (liquid crystal display), 35b...LCD control circuit, 36...control circuit, 36a...CPLI. 36b, 36c...LED drive circuit, 37...lid, 38...external ROM (storage means), 39.43...
・Transparent plate, 40.41...Light emitting diode group, 42...Substrate, 42a...7-shaped groove, 50
...Atlas.

Claims (1)

[Claims] 1. A frame having a space for installing an atlas, a transparent display installed within the frame, a position detecting means for detecting the position, a removable storage means for storing data in the atlas, and the memory. A position display device comprising: a control circuit that displays a graphic on the display based on map data stored in the means and position information detected by the position detection means. 2. The control circuit further comprises character display means for displaying an atlas exchange command on the frame, and the control circuit determines whether the detected position is within the atlas based on the position information detected by the position detection means and the data stored in the storage means. 2. The position display device according to claim 1, wherein when it is determined that the location is not on the map, the character display means is instructed to display an atlas exchange command.