JPH0719263B2 - Map information display system - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a video display device suitable for displaying a plurality of image information in a center / terminal two-way communication system (video text) including images.

[Background of the Invention]

In a system that provides image information, more abundant information can be provided by synchronizing and displaying a plurality of related image data. For example, by not only looking at the map when moving from the current position to the destination, but by displaying the background according to the course one after another, the height and structure of the building, which is an important factor in actually determining the route. It can represent information that is not represented on a map.

By the way, if there is a building near the purpose,
A route may be decided with this as a goal. Marking the position of the target building on the map and the position on the landscape image is effective in determining the route to the destination. As a system for providing such information, a two-way communication system (video text) of a Senita / Terminal including an image can be considered.

As the image data transfer method by video text,
(I) Alphabet, alphanumeric characters and various symbols are associated with a code code, and the graphic is also treated as an equivalent to a character.
There are three methods: (ii) an alpha-geometry method that employs a computer graph text method that expresses points, line segments, arcs, etc. of a figure, and (iii) an alpha-photograph method that transfers data in dot units. .
(The Institute of Electronics and Communication Engineers, 1984, vol67, pp769-773) (i) When transmitting video information using the Alfa-bet mosaic method,
The resolution and color gradation deteriorate, and the real information is lost. In the alpha geometry system of (ii), the work of creating a graphics command based on video information is troublesome. In the alpha photographic method of (iii), although the transfer data can be easily created, it has a drawback that it takes a long time to transfer because of the large amount of data.

[Object of the Invention]

It is an object of the present invention to provide a map information display system capable of selectively displaying a map and a landscape image in response to an operator operation.

[Outline of Invention]

According to the present invention, when an input operation for selecting a specific position is performed on the wide area map displayed on the display screen and the peripheral map at the selected position is displayed, the specified position is displayed on the peripheral map display screen. It is characterized in that it has a direction option in a position, and when one of the direction options is selected, a landscape image in that direction is displayed. Further, in the present invention, this landscape image and the surrounding map are displayed on the same screen, and a mark indicating a correspondence relationship between a specific building in the landscape image and the position of this building on the surrounding map is displayed. It is characterized by

Video hardware is mentioned as applicable hardware, but the information that can be transferred via the communication network is limited to code data. Therefore, a video file is provided for each terminal to handle video signals. At this time, the problem is the method of partially combining the landscape which is the video signal and the map information which is the code data. In the present embodiment of the present invention, the landscape information is unique depending on the position and the traveling direction. Paying attention to the points that are determined by, the coordinate position on the screen that can be seen for each landscape of the target object (the object to be marked with the image information and the map) is defined in advance. When a certain landscape is retrieved, the information center transfers the frame address of the video file storing the landscape and the position to mark on the landscape as code data, and the terminal side marks the mark of foreign objects. And the landscape are combined and displayed.

Example of Invention

An embodiment of the present invention will be described below with reference to the drawings. An example will be described with reference to FIG. 1 in which information about directions is provided. In the figure, (a) is an initial screen, and the entire map is displayed. The mark shown here shows the present position. Image information of a landscape photographed from this marked position is stored in advance in the video file. The terminal user selects one from the current positions in (a). On the other hand, the screen is in the state of (b) displaying the peripheral map of the current position. The state (b) is a mode for selecting the landscape direction. In the case of the figure, the traveling directions that can be selected are the left, right, and front three directions. (This direction indicates the number of stored image information from one current position.) From this, when the terminal user selects one direction, the landscape that can be seen when going from the current position to the selected direction is mapped. Is partially combined with and displayed. The figure shows the case where the traveling direction is forward (state (c))
At this time, a mark indicating the positional relationship between the map and the image is displayed at the same time. In the figure, the black-painted buildings on the map (left) are used as landmarks. The building with this mark is called the target. If the same building appears in the landscape, it is indicated by an arrow.

As an example of realizing such an effect, a bidirectional communication system (video text) between a center and terminals including image data
Then, a video file 3 may be added as shown in FIG. A keyword of information to be referred to is input from the keyboard 6 on the terminal side, and the communication network 2 is transferred to the transit information center 1 via the system bus 8. The information center 1 selects a designated area from the image data of the map held in the center based on the transferred current location data, and sets the current location on the display of the landscape displayed at the same time in the traveling direction. Also, the code data of the image in which the mark is added to the target object is transferred to the terminal side via the communication network. Video information for displaying the landscape is stored in the video file 3 on the terminal side. In the present embodiment, the table that associates the address where the landscape is stored with the current position and the traveling direction is provided in the information center 1 and transferred to the terminal side via the communication network like the image code data. The microprocessor 7 analyzes the transfer data, issues a landscape retrieval command specified in the video file 3 and inputs it to the frame memory 4. On the other hand, the code data of the image showing a part of the map is the microprocessor. 7, the scene and the area are separated and developed on the frame memory 4. This is displayed on the display 5.

A specific example is shown in FIG. In the present embodiment, the present position that can be selected in advance and the traveling direction from each present position are set. When the current position is specified on the whole map from the terminal, the surrounding area (region h in the figure) of the current position on the whole map (S city map in the case of the figure) is extracted. Further, by specifying the traveling direction, one landscape is set. Therefore, you can specify the address of the video file. Further, the mark position of the target in the landscape image data is fixed for each image. Therefore, a table is set in which the coordinates on the display of the target can be determined by the address of the video file.
Coordinate data on the display of the target object is transferred to the terminal side together with the address data of the landscape image. On the terminal side, the image information and the target mark are combined on the frame memory based on these data. In addition to the image data of the designated example area, it is developed on the mark frame memory of the target object corresponding to the moving direction, the current position, and the video information.

In addition, if a printer is added to the terminal to enable hard copy service, it is possible to change the current position up to the destination in order and show the road guide while showing the target object at each place.

The display method of the present invention will be described below with reference to FIG.

Process 100: The entire map is displayed on the display on the terminal side. On this map, an area including all the positions that can be designated as the current position (point where the image information of the landscape can be provided) is displayed.

Process 110: The terminal user specifies the current position from the displayed map and transfers it to the center.

Process 120: A map around the specified current position is extracted from the entire map information held by the center and transferred to the terminal side. This information includes a traveling direction from the current position and a mark of the current position.

Process 130: The peripheral map of the specified current position is displayed on the display.

Process 140: The terminal side specifies the traveling direction from the current position and transfers it to the center side.

Process 150: The center searches for an address in the video file of the landscape video according to the designated current position and traveling direction. At the same time, since the target is determined, the display position of the target on the display and the position on the map in the landscape image can be searched. Here, the data transferred to the terminal side is (1) the address in the video file of the landscape video.

(2) Information on the peripheral map of the current position (including the mark of the target object, the current position, and the direction of the selected line of sight).

(3) Coordinate data indicating the position of the mark pointing to the target object in the landscape image.

Process 160: The mark for the target object is combined with the image on the frame memory based on the above (3) coordinate data. Here, the area is divided, and the map and the image around the current position are combined and displayed on the display.

Process 170: If the next information is not retrieved, the process ends. If retrieval is to be performed, the process 180 is entered.

Process 180: If the current position to be searched next is known,
The process returns to step 110 without displaying the entire map. When it is desired to refer to the entire map, the process 100 is returned to.

〔The invention's effect〕

 The present invention has the following effects.

(I) Since the corresponding portions of different images are marked and emphasized, the mutual relationship becomes clear.

(Ii) In the case of adapting to the video text, by having the video information in the video file on the terminal side, (a) it is possible to provide fine video information. (B) Since it is not necessary to transfer the video data via the communication network, it is possible to avoid a decrease in the throughput of the communication network.

(Iii) Since the mark is generated in the frame memory on the terminal side, it is not necessary to process the image when registering the image information to be stored in the video file.

[Brief description of drawings]

The drawings are all related to the present invention. FIG. 1 is a diagram showing an example of a screen display using route guidance as an example, FIG. 2 is a configuration diagram of an embodiment of a video display device, and FIG. 3 is a description of screen synthesis. FIG. 4 is a processing flow chart of an embodiment of the method for realizing the present invention. 1 ... Information center, 2 ... Communication network, 3 ... Video file, 4 ... Frame memory, 5 ... Display, 6 ...
... keyboard (any device that can generate keywords), 7 ... microprocessor, 8 ... system bus.

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Internal reference number FI Technical indication 8125-5L G06F 15/62 335 (72) Inventor Mashino Hino 1099 Ozenji, Aso-ku, Kawasaki-shi, Kanagawa Prefecture Hitachi, Ltd. System Development Laboratory (72) Inventor Kuniaki Tabata 1099, Ozenji, Aso-ku, Kawasaki City, Kanagawa Prefecture Hitachi Systems Development Laboratory (56) References JP-A-61-95386 (JP, A)

Claims (1)

[Claims] 1. Storage means for storing map information and landscape images in a plurality of directions from a plurality of positions on a map, reception means for accepting designation of a position on the map and a direction at the position, map information, or , Having display means for displaying a landscape image corresponding to a specified position and direction, each of the landscape images having a mark display for a specific building among the buildings drawn in the landscape image The map information is provided with a mark display of the position of a specific building in each landscape image, and is designated when the position of the map on the map and the direction at the position are received by the reception means. The display information is displayed so that the landscape image corresponding to the position and direction is selected and displayed at the same time as the map information, and the mark display on the map corresponding to the specific building in the selected landscape image is displayed. control Features and to map information display system further comprising a control means that.