JP4342204B2 - Display device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a display device, and more particularly, to a display device capable of displaying an object on a display screen so that the scale can be changed and designating all or a part of an absolute area of the object that can be displayed on the display screen.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, a display device that displays an object such as map information on a display screen so that the scale can be changed is known (see, for example, Patent Document 1). In the display device described in Patent Document 1, when a predetermined area is specified from among the objects displayed on the display screen, the area is surrounded by a frame, and then the specified area is displayed on the entire display screen. The scale is automatically changed and displayed.
[0003]
[Patent Document 1]
JP-A-9-282445
[0004]
[Problems to be solved by the invention]
By the way, after an area of absolute size on the map is specified from among the objects displayed on the display screen, the scale of the object displayed on the display screen can be arbitrarily changed from wide to narrow (detailed). In the case of changing to the above, the area of the designated region relative to the display screen is relatively increased. At this time, depending on the scale and the center of the screen, the entire display screen may display the target in the designated area, or conversely, may not include the designated area at all. Under such circumstances, if the display of the designated area is surrounded only by a frame as in the apparatus of Patent Document 1, the current display screen displays the inside of the designated area, or outside the designated area. The inconvenience that the viewer cannot distinguish whether it is displayed or not occurs.
[0005]
The present invention has been made in view of the above-described points, and an object thereof is to provide a display device capable of distinguishing between a display within a designated area and a display outside the designated area on a display screen.
[0006]
[Means for Solving the Problems]
  The above-mentioned purpose is to display the object on a single display screen so that the scale can be changed and the display can be scrolled.
  Area designating means for designating all or a part of the absolute area of the object that can be displayed on the one display screen;
  Area storage means for storing information on the absolute area designated by the area designation means,
  After the information on the absolute area is stored in the area storage means, the display means displays the entire display screen on the one display screen as the scale is changed or scrolled. When the transition is made to either one related to the absolute area in which information is stored in the storage means or one related to the area other than the absolute area, the display is distinguished from the absolute area and the area other than the absolute area. To be performedIn addition, the specified size of the absolute area specified by the area specifying means is displayed on the one display screen.Achieved by the display device.
In addition, the above-mentioned purpose is to display the object on a single display screen so that the scale can be changed and the display can be scrolled.
Area designating means for designating all or a part of the absolute area of the object that can be displayed on the one display screen;
Area storage means for storing information on the absolute area designated by the area designation means,
After the information on the absolute area is stored in the area storage means, the display means displays the entire display screen on the one display screen as the scale is changed or scrolled. When the transition is made to either one related to the absolute area in which information is stored in the storage means or one related to the area other than the absolute area, the display is distinguished from the absolute area and the area other than the absolute area. And when the absolute area in which information is stored in the area storage means is displayed on the one display screen, the display apparatus displays unique identification information indicating the absolute area. .
[0007]
In the present invention, on the display screen, the target is displayed in a manner in which all or a part of the specified absolute area is distinguished from areas other than the specified absolute area. Therefore, even when the entire display screen is related to the specified area or outside the specified area, it is distinguished whether the display screen is displaying inside the specified area or outside the specified area. Can be made.
[0008]
  In this case, in the display device described above, the display means is stored in the area storage means.InformationRememberedingThe display of the absolute area on the one display screen may be different from the normal display.
[0009]
  By the way, in the display device described above, the display means,in frontIf the scale on one display screen is displayed on the one display screen, the approximate absolute size of the designated area can be provided when the designated area is displayed on one display screen.
[0010]
  In the display device described above, the display means includes:After the information on the absolute area is stored in the area storage means, the display on the one display screen of the object is changed to the scale display or the scroll display is moved. The display is performed in such a manner that the absolute area and the area other than the absolute area are distinguished when transitioning to any one of the absolute area and the area other than the absolute area stored. WithThe designated size of the absolute area designated by the area designating means is displayed on the one display screen.BecauseWhen the designated area is displayed on one display screen, the exact absolute size of the designated area can be provided.
Alternatively, in the display device described above, after the information on the absolute region is stored in the region storage unit, the display unit displays the target on the one display screen in accordance with a scale change or scroll movement. When the entire display screen transitions to either the area related to the absolute area in which information is stored in the area storage means or the area related to an area other than the absolute area, the display is changed to the absolute area and the area When the absolute area in which information is stored in the area storage means is displayed on the one display screen, unique identification information indicating the absolute area is displayed. Since it displays, the information regarding the designation | designated area | region displayed on one display screen can be provided in the aspect which can be distinguished from another designation | designated area | region.
[0011]
  In the display device described above, the display means is stored in the area storage means.InformationRememberedingIf the center of gravity of the absolute area can be displayed on the one display screen so as to be visible, whether or not the display shows the vicinity of the center of gravity of the designated area when the designated area is displayed on one display screen. Can be easily determined.
[0013]
The display device described above may further include designated size changing means for changing the designated size of the absolute area designated by the area designating means.
  Furthermore,AboveIn the display device, the object may be a map.
[0014]
DETAILED DESCRIPTION OF THE INVENTION
FIG. 1 shows a system configuration diagram of a display device 10 according to an embodiment of the present invention. The display device 10 of this embodiment is a device that is mounted on a vehicle, a personal computer, or the like and displays a map. The display device 10 includes a display screen 12 that can be viewed by a user (viewer) and a navigation computer 14, and the navigation computer 14 controls map display displayed on the display screen 12. Connected to the navigation computer 14 is a map medium 16 for storing map information composed of a DVD, a CD, or the like. The navigation computer 14 reads a map in the vicinity of the current position of the vehicle or the like or in the vicinity of the selected position selected by the user from the map medium 16 and displays the read map on the display screen 12.
[0015]
FIG. 2 schematically shows the display screen 12 in the display device 10 of the present embodiment. As shown in FIG. 1, a scale input switch 18 and a region designation input switch 20 that can be operated by a user are connected to the navigation computer 14. The scale input switch 18 and the area designation input switch 20 are both touch-type on / off switches that appear on the display screen 12 as shown in FIG. Note that these switches 18 and 20 do not have to be touch switches that appear on the display screen 12, and may be always provided outside the display screen 12.
[0016]
The scale input switch 18 is a detailed switch 18a for changing the map scale displayed on the display screen 12 to the detailed side (narrow area side) step by step, and the map scale to the wide area side step by step. And a wide area switch 18b. The area designation input switch 20 includes a size enlargement switch 20a for stepwise enlargement of the absolute size (dimension) of the designated area S on the map, which will be described in detail later, and the absolute designation of the designated area S on the map. A size reduction switch 20b for reducing the size of the image in stages, and a completion switch 20c for determining the area designation.
[0017]
Each time the detail switch 18a of the scale input switch 18 is operated, the navigation computer 14 changes the map scale from the current one to a predetermined detail, and every time the wide area switch 18b is operated, the map. The scale is changed from the current one to a predetermined wide area. Further, the navigation computer 14 displays the area designation input switch 20 on the display screen 12 when an area on the map is designated, and the size of the area designation input switch 20 in a state where the center of gravity of the designated area S is determined. Each time the enlargement switch 20a is operated, the absolute size of the designated area S on the map is enlarged to a predetermined size, and every time the size reduction switch 20b is operated, the absolute size of the designated area S on the map. Is reduced to a predetermined value.
[0018]
A memory 22 is attached to the navigation computer 14. The navigation computer 14 stores the information of the designated area S in the memory 22 when the completion switch 20c is operated in a state where the area on the map is designated. The memory 22 stores information on the designated area S, specifically, the absolute size, position, name, etc. on the map in accordance with a command from the navigation computer 14. The memory 22 has a capacity sufficient to store information on a large number of designated areas S.
[0019]
The display screen 12 is provided with a scale notation portion 12a and an absolute size notation portion 12b. When the navigation computer 14 displays a map on the display screen 12, the navigation computer 14 indicates the map scale set at that time in the scale notation unit 12a. For example, as shown in FIG. 2, it is displayed that the unit length on the display screen 12 corresponds to “OO” km or the like. Further, when the area on the map is designated, the navigation computer 14 describes the absolute size of the designated area S set at that time in the absolute size notation unit 12b. For example, as shown in FIG. 2, it is displayed that the absolute size is “OO” km or the like.
[0020]
Next, the operation of the display device 10 of this embodiment will be described.
[0021]
In this embodiment, when navigation is activated, the navigation computer 14 receives radio waves from GPS satellites, detects the current position of the vehicle, etc., and maps the map information near the current position according to a predetermined scale to the map medium 16. And the read map is displayed on the display screen 12. Thereafter, each time the scale input switch 18 is touched by the user, a map whose scale is changed according to the operation is read from the map medium 16 and the map is displayed on the display screen 12.
[0022]
Further, when a registration switch (not shown) for area designation is operated, the navigation computer 14 displays the center of gravity of the area to be designated at the center of the display screen 12 in a state where a map is displayed on the display screen 12. At the same time, the area designation input switch 20 is displayed on the display screen 12, and the absolute size is indicated on the absolute size notation 12b. Thereafter, when a map scroll operation on the display screen 12 is performed, the map itself is scrolled on the display screen 12 without moving the center of gravity of the area from the center of the display screen 12. In this case, the center of gravity of the region moves relatively on the map. Further, when an operation for changing the scale of the map on the display screen 12 is performed, the scale of the map on the display screen 12 is changed without moving the center of gravity of the region from the center of the display screen 12.
[0023]
Under such circumstances, the navigation computer 14 designates the center of gravity of the region by the above-described scroll operation as a point that the user wants to avoid as a route (congestion point or the like), for example, when a route guidance for navigation is performed, or a point that the user always wants to pass as a route, or When an arbitrary point is designated and the size enlargement switch 20a is turned on / off once, a designated area S of a predetermined size (for example, 10 m) with the designated point as the center of gravity on the map other than the designated area S The display screen 12 is displayed in a size corresponding to the scale in a manner that can be distinguished from the above area. Thereafter, every time the area designation input switch 20 is touched by the user, the designated area S whose size (absolute size) is changed according to the operation is displayed on the display screen 12.
[0024]
When the completion switch 20 c is touched by the user while the designated area S is displayed on the display screen 12, the navigation computer 14 stores information on the designated area S in the memory 22. Thereafter, information on the designated area S is stored in the memory 22 every time a similar operation is performed. That is, the navigation computer 14 can store information on the plurality of designated areas S in the memory 22. Further, when the navigation computer 14 stores the information of the designated area S in the memory 22, the navigation computer 14 causes the name indicating the specific identification information of the designated area S to be automatically or simultaneously stored in the memory 22 by the user's operation.
[0025]
When the designated area S is designated and the information is stored in the memory 22, the designated area S is included as a route when the route guidance to the destination which is a navigation function is performed thereafter. Route generation or the like is performed so that it is not included or necessarily included. Further, when the current position reaches the vicinity of the designated area S or the point at the center of the screen on the display screen 12 reaches the vicinity of the designated area S by scrolling the map, the designated area S is distinguished from the outside of the designated area. Appears on the display screen 12 in an obtained manner. For this reason, according to the present embodiment, it is possible to execute route guidance that avoids a traffic congestion point or the like or always passes a favorite point by specifying an area, and that the traffic congestion point or the like is located nearby. Can be notified to the user via the display screen 12.
[0026]
FIG. 3 is a diagram for explaining the relative area of the designated region S with respect to the display screen 12 in the present embodiment. In the present embodiment, the designated area S designated as described above has an absolute size on the map. For this reason, the size of the designated area S with respect to the display screen 12 varies depending on the scale of the map on the display screen 12. For example, if the absolute size of the designated area S is 1 km square as shown in FIG. 3A, the map scale on the display screen 12 is 1 km scale, that is, the unit length on the display screen 12 3 corresponds to 1 km, a designated area S having a relatively small area as shown in FIG. 3B appears on the display screen 12, and when the map scale is 200 m scale, the display screen 12 shows FIG. A designated area S having a relatively medium area as shown in C) appears, and if the scale of the map is 50 m scale, a display screen having a relatively large area as shown in FIG. The designated area S that protrudes from the 12 frames appears.
[0027]
In this regard, in this embodiment, when the scale of the map is on the detailed side, the entire display screen 12 displays the map in the specified area S of the map depending on the distance between the center of the display screen 12 and the center of gravity of the specified area. On the contrary, a situation occurs in which a map in an area other than the designated area S is displayed. In such a situation, if the display of the designated area S on the display screen 12 is only a frame in which the outer edge of the designated area S is drawn with a line, the current display screen 12 displays the inside of the designated area S. The user cannot distinguish whether the image is displayed or outside the designated area.
[0028]
Therefore, the display device 10 of this embodiment is characterized in that the display in the designated area S and the display outside the designated area on the display screen 12 are distinguished. Hereinafter, the characteristic part of a present Example is demonstrated.
[0029]
In the present embodiment, when the designated area S is displayed on the display screen 12, the navigation computer 14 displays a display in the designated area S that is different from a normal display (a state where no area is designated), that is, outside the designated area. The display is different from that of Specifically, while making the map itself visible, the hue is changed, for example, by making the brightness lower or higher than usual, or by making redness, blueness, and yellowness stronger or weaker. In such a configuration, the map is displayed on the display screen 12 in a manner in which the designated area S on the map and the area other than the designated area S are distinguished.
[0030]
FIG. 4 shows a specific display when the designated area S is displayed on the display screen 12 in this embodiment. Further, in this embodiment, when the designated area S is displayed on the display screen 12, the navigation computer 14 displays a name by a character indicating unique identification information of the designated area S in the designated area S on the display screen 12. It is displayed in a superimposed manner (note that the name is “ABC” in FIG. 4). At this time, the name is displayed in the vicinity of the center of gravity of the designated area S on the display screen 12 as a general rule. 12 on the side edge closest to the center of gravity. In such a configuration, when the map is displayed on the display screen 12 in a manner in which the designated area S on the map and the area other than the designated area S are distinguished, the designated area S is displayed on the display screen 12. A unique identification name of the designated area S is provided, and the center of gravity of the designated area S itself or the direction in which the center of gravity is located is provided.
[0031]
As described above, in the display device 10, the display of the map on the display screen 12 is performed in such a manner that the designated area S can be distinguished from areas other than the designated area S. Therefore, according to the display device 10 of the present embodiment, the user who sees the map displayed on the display screen 12 distinguishes between the display in the designated area S and the display in areas other than the designated area S on the display screen 12. As a result, for example, when the scale of the map on the display screen 12 is selected on the detailed side, the entire display screen 12 is related to the designated area S or outside the designated area. It is possible to recognize whether the display screen 12 displays the designated area S or outside the designated area.
[0032]
As described above, in this embodiment, the area designation can be performed for a plurality of areas. Further, when the designated area S is displayed on the display screen 12 in the display device 10, the unique identification name of the designated area S is also displayed at the same time. Therefore, according to the display device 10, the unique identification name of the designated area S displayed on the display screen 12 can be distinguished from the other designated areas S in a situation where a plurality of designated areas S are designated. Can be provided to the user, and as a result, the user can recognize each of the designated areas S displayed on the display screen 12 by distinguishing them individually.
[0033]
Further, when the designated area S is displayed on the display screen 12 in the display device 10, the unique identification name of the designated area S is the vicinity of the center of gravity when the center of gravity is located in the map on the display screen 12. On the other hand, if the center of gravity is not located in the map on the display screen 12, it is displayed on the end of the display screen 12 on the side where the center of gravity is located. For this reason, according to the present embodiment, when the scale of the map on the display screen 12 is selected to the detailed side, the entire display screen 12 is related to the designated area S or outside the designated area. The user can recognize the specific relative position or the relative position direction of the current position or the specific position with respect to the entire designated area S, thereby allowing the user to designate the designated area when scrolling the map on the display screen 12. It is possible to perform the processing in consideration of the center of gravity of S.
[0034]
FIG. 5 shows an example of a flowchart of a control routine executed by the navigation computer 14 in this embodiment in order to specify the area. The routine shown in FIG. 5 is started every time a registration switch for designating an area is operated. When the routine shown in FIG. 5 is started, first, the process of step 100 is executed.
[0035]
In step 100, the map projected on the display screen 12 is scrolled by the user's operation, whereby processing for designating the position of the center of gravity of the area to be designated is executed. In step 102, the scale input switch 18 is operated by the user, whereby processing for designating the scale of the map on the display screen 12 is executed. In step 104, a process of displaying a map according to the scale specified in step 102 on the display screen 12 is executed in a state where the position of the center of gravity specified in step 100 is fixed to the center of the display screen 12.
[0036]
In step 106, a process for designating / changing the absolute size of the designated area S centered on the position of the center of gravity designated in step 100 is executed by operating the area designation input switch 20. In step 108, it is determined whether or not the designation of the designated area S in which the absolute size is determined is completed by operating the completion switch 20c. As a result, if a negative determination is made, the processing after step 100 is executed again. On the other hand, if an affirmative determination is made, the process of step 110 is executed next.
[0037]
In step 110, information on the designated area S at the time when the completion switch 20c is turned on in step 108, specifically, the absolute size and position on the map are stored in the memory 22 and the information is stored. A process of setting a unique identification name of the designated area S to be performed, linking the name and storing it in the memory 22 is executed. When the processing of step 110 is completed, the current routine is terminated.
[0038]
According to the routine shown in FIG. 5, information regarding the designated area S having an absolute size on the map can be stored in the memory 22. For this reason, when the route guidance is performed after the storage, the route generation in consideration of the designated area S can be performed, and the route guidance according to the intention of the user can be performed. Further, at the time of displaying the map, it is possible to notify the user via the display screen 12 that the designated area S that can be a traffic jam point or the like is located nearby.
[0039]
FIG. 6 shows an example of a flowchart of a control routine executed by the navigation computer 14 in the present embodiment in order to display the designated area on the display screen. The routine shown in FIG. 6 is a routine that is repeatedly activated every predetermined time after navigation is activated. When the routine shown in FIG. 6 is started, the process of step 120 is first executed.
[0040]
In step 120, it is determined whether or not a part of the designated area S stored in the memory 22 is displayed on the display screen 12. As a result, if information on one designated area S is not stored in the memory 22 or if the designated area is not included in the map on the display screen 12, a negative determination is made, and then processing proceeds. This routine is finished without. For this reason, under such circumstances, the map display projected on the display screen 12 is normal. On the other hand, if even a part of the designated area S is included in the map on the display screen 12, an affirmative determination is made, and then the process of step 122 is executed.
[0041]
In step 122, it is determined whether or not the entire display screen 12 relates to the designated area S. As a result, if an affirmative determination is made, the process of step 124 is executed next. On the other hand, if a negative determination is made, the process of step 126 is executed next.
[0042]
In step 124, a process of making the map of the entire display screen 12 a display different from the normal time by changing, for example, the brightness and hue is executed. Further, in step 126, a process is performed in which the designated area S in the map of the entire display screen 12 is displayed differently from the normal time by changing, for example, brightness, hue, and the like, similar to the process in step 124. The
[0043]
When the designated area S is displayed by the processing of step 124 or 126, if the center of gravity of the designated area S is located in the map on the display screen 12, the center of gravity is displayed in the vicinity of the center of gravity. If it is not located in the map on 12, the unique identification name of the designated area S is displayed at the end on the display screen 12 where the center of gravity is located. When the process of step 124 or 126 is finished, the current routine is finished.
[0044]
According to the routine shown in FIG. 6, the map display on the display screen 12 is made different from the designated area S on the map and the designated area S by the display of the unique identification name of the designated area S due to the difference in brightness and hue. It can be performed in a manner that can be distinguished from the region. Therefore, according to the display device 10 of the present embodiment, the user can distinguish between the display in the designated area S on the display screen 12 and the display in the area other than the designated area S. For this reason, even when the scale of the map on the display screen 12 is selected on the detailed side, the display screen 12 as a whole is related to the designated area S or outside the designated area. It can be recognized whether 12 is displaying the designated area S on the map or the outside of the designated area.
[0045]
By the way, in this embodiment, when the area is designated and when the designated area S is displayed on the display screen 12, the scale notation 12a of the display screen 12 displays the scale of the map displayed on the screen 12. . In this case, the absolute size of the designated area S currently displayed on the display screen 12 is indirectly provided to the user in relation to the scale. Therefore, according to the display device 10 of the present embodiment, the user can recognize the approximate absolute size of the designated area S when the designated area S is displayed on the display screen 12. .
[0046]
In the present embodiment, when the area is designated, the absolute size of the designated area S currently set is written in the absolute size notation section 12b of the display screen 12. Therefore, according to the display device 10 of the present embodiment, the user can directly recognize the absolute size of the designated area S at the present time as a specific numerical value when performing the designation processing of the designated area S. it can. In this respect, the designation process of the designated area S is facilitated compared to a configuration in which a specific numerical value of the absolute size of the designated area S is not shown.
[0047]
In the above-described embodiment, the name of the designated area S is a patent in the “object” described in the claims of the map, the designated area S is listed in the “absolute area” of the claims. This corresponds to “unique identification information” described in the claims. Further, the navigation computer 14 displays the map on the display screen 12 in such a manner that the designated area S and the area other than the designated area S can be distinguished from each other. By designating the designated area S on the map in accordance with the operation of the area designation input switch 20, the “area designation means” described in the claims is realized.
[0048]
By the way, in the above embodiment, a map is used as an object to be displayed on the display screen 12, but the present invention is not limited to this. For example, a photograph is taken using a camera such as a picture, illustration, or scenery. The image obtained as a result may be the target to be displayed on the display screen 12.
[0049]
In the above embodiment, the designated region S is formed in a square shape having the same length on all four sides, but the present invention is not limited to this, and is formed in a circular shape or an elliptical shape. It is good.
[0050]
Further, in the above-described embodiment, the designated area S displayed on the display screen 12 is set to a display different from the normal time so that the designated area S and the area outside the designated area S are displayed separately. However, the present invention is not limited to this. By setting the outside of the designated area displayed on the display screen 12 to a display different from the normal time, the designated area S and the area outside the designated area S are displayed separately. It is good to do.
[0051]
Further, in the above embodiment, when an area on the map is designated, the absolute size of the designated area S is represented in the absolute size notation unit 12b. Even when S is displayed, the absolute size of the designated area S may be displayed in characters on the absolute size notation portion 12b. In this case, the exact absolute size of the designated area S displayed on the display screen 12 is provided to the user.
[0052]
In the above embodiment, the name of the designated area S displayed on the display screen 12 is displayed near the center of gravity when the center of gravity of the designated area S is located in the map on the display screen 12. On the other hand, when the center of gravity of the designated area S is not located in the map on the display screen 12, it is displayed on the display screen 12 at a position that does not indicate the center of gravity, but the name of the designated area S is displayed near the center of gravity. Such display may be performed in such a manner that it can be distinguished from the case where it is not displayed near the center of gravity. In this case, when the designated area S is displayed on the display screen 12, the user can easily determine whether or not the display shows the vicinity of the center of gravity of the designated area S.
[0053]
In the above embodiment, the name of the designated area S is displayed near the center of gravity position. Instead of displaying the name, a mark indicating the center of gravity of the designated area S is displayed on the display screen 12. Also good. Even in this case, when the designated area S is displayed on the display screen 12, the user can easily determine whether or not the display shows the vicinity of the center of gravity of the designated area S.
[0054]
Furthermore, in the above-described embodiment, the map in the designated area S is displayed differently from the normal time so that the display in the designated area S and the area other than the designated area S are distinguished. The display in the designated area S is distinguished from the display in areas other than the designated area S by displaying a frame surrounding the outer edge of the designated area S with a line and giving a unique identification name in the designated area S. It is also possible to make it.
[0055]
【The invention's effect】
  BookAccording to the invention, it is possible to distinguish between the display in the designated area and the display outside the designated area on the display screen.According to the first aspect of the present invention, when the designated area is displayed on the display screen, an accurate absolute size of the designated area can be provided. According to the invention described in claim 2, it is possible to provide information relating to the designated area displayed on the display screen in a manner that can be distinguished from other designated areas.
[0056]
  Claim4According to the described invention, when the designated area is displayed on the display screen, an approximate absolute size of the designated area can be provided.
[0058]
According to the fifth aspect of the present invention, when the designated area is displayed on the display screen, it is possible to easily determine whether or not the display reflects the vicinity of the center of gravity of the designated area.
[0060]
  Claims6According to the described invention, the designated size of the designated area displayed on one display screen can be changed.
  Further claims7According to the described invention, it is possible to distinguish between the display in the designated area related to the map and the display outside the designated area on one display screen.
[Brief description of the drawings]
FIG. 1 is a system configuration diagram of a display device according to an embodiment of the present invention.
FIG. 2 is a diagram schematically showing a display screen in the display device of the present embodiment.
FIG. 3 is a diagram for explaining a relative area of a designated region with respect to a display screen in the present embodiment.
FIG. 4 is a diagram showing a specific display when a designated area is displayed on a display screen in the present embodiment.
FIG. 5 is a flowchart of a control routine executed to designate an absolute area in the present embodiment.
FIG. 6 is a flowchart of a control routine executed to display a designated area on the display screen in the present embodiment.
[Explanation of symbols]
10 Display device
12 Display screen
12a Scale notation
12b Absolute size notation
14 Navigation computer
16 Map media
18 Scale input switch
20 Area designation input switch
S specified area

Claims (7)

Display means for displaying an object on a single display screen so that the scale can be changed and scrolled;
Area designating means for designating all or a part of the absolute area of the object that can be displayed on the one display screen;
Area storage means for storing information on the absolute area designated by the area designation means,
After the information on the absolute area is stored in the area storage means, the display means displays the entire display screen on the one display screen as the scale is changed or scrolled. When the transition is made to either one related to the absolute area in which information is stored in the storage means or one related to the area other than the absolute area, the display is distinguished from the absolute area and the area other than the absolute area. And displaying the specified size of the absolute area specified by the area specifying means on the one display screen . Display means for displaying an object on a single display screen so that the scale can be changed and scrolled;
Area designating means for designating all or a part of the absolute area of the object that can be displayed on the one display screen;
Area storage means for storing information on the absolute area designated by the area designation means,
After the information on the absolute area is stored in the area storage means, the display means displays the entire display screen on the one display screen as the scale is changed or scrolled. When the transition is made to either one related to the absolute area in which information is stored in the storage means or one related to the area other than the absolute area, the display is distinguished from the absolute area and the area other than the absolute area. performs in the manner, when displaying the absolute area information in the area storage means is stored in said one display screen, you and displaying a unique identification information indicating the absolute area Viewing equipment. The display according to claim 1 or 2 , wherein the display means displays the absolute area in which information is stored in the area storage means on the one display screen, which is different from a normal display. apparatus. Said display means also display the scales before Symbol one display screen according to claim 1 or 2, wherein the displaying on said single display screen. The display means, the display device according to claim 1 or 2, characterized in that the center of gravity of the absolute area information in the area storage means is stored may visibly displayed on the single display screen. 3. The display device according to claim 1, further comprising designated size changing means for changing a designated size of the absolute area designated by the area designating means. Display device according to any one of claims 1 to 6 wherein the subject is characterized in that it is a map.

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