JPH01195317A - Position display device - Google Patents

Abstract

PURPOSE:Not only to recognize position information on a map but also to perceive a coordinate of a measuring position by displaying a point of a detecting position on a display, based on position information which has been detected by a position detecting means and setting an atlas of a page shown on a character display part thereunder. CONSTITUTION:On a frame 31 having a space for installing an atlas, transparent optical fiber groups 32, 33, an input key group 34 and a character display part 35 (character display means) are provided, and also, in the frame 31, a control circuit 36 is contained. On the control circuit 36, an external ROM 38 is provided, and in this external ROM 38, data such as the number of pages of a prescribed atlas, a coordinate of an origin of each page, etc. are stored. The control circuit 36 contains a microcomputer, displays an optimum page number in the atlas on the character display part 35 for several seconds, based on position information which has been detected by a position detecting means, and thereafter, displays the own present latitude and longitude which have been read from the position detecting means, on the character display part 35, and thereafter, turns on an optical fiber.

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 a car, a ship, an aircraft, etc., and is used in a navigation device, etc. .

(Prior Art) Conventionally, as a position display device for a moving object, for example, Japanese Patent Laid-Open No. 61
-In-vehicle navigator shown in Publication No. 75375, etc.: Like the 1-in device, it calculates the current position from the distance traveled and the direction of travel of the vehicle, and reads it from the storage device on a display device such as a CRT or LCD. Some devices are known that display map information and the current location together.

Furthermore, Japanese Utility Model Application No. 56-12300 discloses a mobile object position display device that displays the current position on a transparent 7-trix display and displays the position of the mobile object by placing a map under the 7-trix display. is disclosed. 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 a large number of horizontal and vertical transparent electrodes, and by applying signals to the vertical and horizontal electrodes, the intersection points can emit two colors or become opaque. (e.g. plasma display, liquid crystal display).

(Problems to be Solved by the Invention) In the technology disclosed in Japanese Patent Application Laid-Open No. 61-75375, etc., it is necessary to accurately store map information, such as roads, place names, etc., in the device. The capacity of the α device needed to be enormous. Also, due to physical capacity limitations, only maps of designated areas could be used.

On the other hand, the technique disclosed in the above-mentioned Japanese Utility Model Publication No. 12300/1983 can solve the above problem, but it cannot be confirmed if the specified point shifts due to equipment failure etc. , there was a risk that the operator would trust incorrect information.

Therefore, the technical problem of the present invention is to make it possible to perceive the coordinates of a measurement position in addition to recognizing position information on a map.

[Structure of the invention]

(Means for solving the problem) The technical measures taken to solve the above technical problem are:
The position display device includes a frame having a space for installing an atlas, a transparent display placed within the frame, a position detection means for detecting the position, and a display-L based on the position information detected by the position detection means. A control circuit for displaying a graphic on the frame 1111, and a character display means for displaying the coordinates of the position detected by the +Fi direction position detection means arranged on the frame No. 1111.

(Operation) According to technical means 7 of O1I, the control circuit displays the point of the detected position on the display based on the position information detected by the position detecting means.

Furthermore, it has a character display means on the frame 1, on which the coordinates of the detected position are displayed.

(Example) Hereinafter, an example in which the present invention is applied to a navigation device for a mobile object-L 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. GPS reception! 20 is a known receiver that measures its own position using radio waves from three or four satellites. The inside of the GPS receiver a20 is composed of a receiving section 2I, a data switching section 22, an orbit data demodulating section 23, a pseudo distance measuring section 24, a positioning calculation section 25, and a satellite switching section 26. The signal received by the antenna lO and the receiving unit 21 is separated into orbit data and pseudo distance, and then sent to the positioning calculation unit 2.
Sent to 5. The positioning calculation unit 25 calculates its own latitude and longitude and transmits it to the display device 30. As described above, the antenna 10 and the GPS receiver 20 detect the own position (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 on a frame 31, an input key group 34, and a character display section 35.
(Character display means) is provided. Also frame 3
A control circuit 36 is built into the device 1. An external ROM 38 is removably mounted on the control circuit 36.

This external ROM 38 is on the frame 31! &37 can be opened and closed so that the operator can replace them freely.

This external ROM 38 may store data such as the number of pages of a predetermined atlas, the coordinates of the origin of each page, etc. as 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 installed on a substrate 42 disposed within the frame 31, as shown in FIGS. 3a and 3b. (The plate 42 is provided with a V-shaped groove 42a for positioning the optical fiber groups 32 and 33,
Optical fiber groups 32 and 33 are fixed. optical fiber group 3 for protection of the surface, optical fiber groups 32 and 33;
Two transparent plates 39 and 43 are arranged on the frame 31 so as to sandwich 2 and 33 from below.

A portion of the optical fiber of each of the optical fiber groups 32 and 33 has a roughened surface, and the light is diffusely reflected in this cladding so as to emit light. Therefore, when each one 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.

Input key group 343 character display section 35 of the above-mentioned display device 30
2 light emitting diode groups 40 and 41. External ROM3 B,
and the control circuit 36 are connected by a circuit shown in FIG. The input key group 34 includes a numeric keypad 34a and a setting key 3
4b. Also, the character display section 35 is an LCD
(Liquid crystal display) 35a and LCD control circuit 35b
It consists of The LCD control circuit 35b is the control circuit 36
I, so that alphanumeric characters, kanji, etc. are displayed according to the signal from
Distribute CD35a to the market.

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 in the CI U 36a and the input/output board are initialized in step 60. In steps 60 and 61, it is determined whether the external ROM 38 is connected, and the external ROM 38 is connected.
When the OM 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, read the current latitude and longitude of the device from GPS reception [20]. 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." After that, the task of reading the own latitude and longitude from the GPS reception a20 is performed 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 user's own latitude and longitude read by the GPS receiver 20. Note that 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”
”, “Atlas Unmanchi” appears in the character display section 35.
The atlas exchange command is displayed and the process returns to step 61. If the optimum page number is other than "O", the optimum page number is displayed on the character display section 35.

After displaying the optimum page number on the character display section 35 for several seconds, the character display section 35 displays the user's current latitude and longitude read by the GPS receiver 20.

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. This table and G 11 S
The optimum line is determined from the current latitude and longitude of the receiver 20. Next, an example of a method for searching for an optimal line will be shown. When the coordinates of point A are (Ax, Ay), the coordinates of point B are (Bx, By), and the own coordinates are (X, Y), the latitude of the line to be lit is (Ax-X)/( The line and longitude corresponding to the rounded value of Δx-Bx)x (1+1) are (Ay-Y)/
The line corresponds to the value obtained by rounding off (Ay-By)x (J+1). (Here, 1 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 sends a signal to 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.

Note that the manual key group 34 is for manually inputting the type of atlas in order to support multiple types of atlases.

In the above embodiment, a combination of a light emitting diode and a transparent optical fiber was used as the transparent display, but a device in which the intersection point emits two colors or becomes opaque, such as a plasma display or a liquid crystal display, may also be used. You may.

〔Effect of the invention〕

According to the present invention described above, the coordinates of the detected position are displayed on the frame of the display device, so the position can be confirmed more clearly than when the position is displayed on a map. Furthermore, since the display of the position on the map and the coordinates of the position can be compared, it is possible to easily determine the failure when either one is incorrect.

[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 hedge stored in the external ROM in FIG. 10... Antenna, 20... GPS receiver, 21... Receiving section 21, 22... Data switching section,
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, 34a-...IO key, 34b ...Setting key, 35...Character display section (character display means), 35a
...LCD (liquid crystal display), 35 b-1
-CDii control circuit, 36... control circuit, 36a... CPU. 36b, 36c... LED drive circuit, 37... Lid, 38... External ROM, 39.43... Transparent plate, 40.41... Light emitting diode group, 42... Substrate, 42a. ...V-shaped groove, 50
...Atlas. fls3a diagram fi3bra product 4;<
1

Claims (1)

[Claims] A frame having a space for installing an atlas, a transparent display placed within the frame, a position detecting means for detecting a position, and a control for displaying a graphic on the display based on position information detected by the position detecting means. A position display device comprising: a circuit; and character display means arranged on the frame and displaying coordinates of a position detected by the position detection means.