JPH09257499A - Car navigation equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve safety and operability by a construction wherein map display data and display data other than a map can be switched over automatically in accordance with conditions of switchover set beforehand. SOLUTION: An arbitrary position on a map is subjected to point registration beforehand by a key operation. CPU 4 makes an access to a CD part 6 on the basis of positional information from GPS part 2, reads out map information therefrom, sends it out to a graphic controller together with the positional information, makes a monitor 13 display a map wherein the present spot is marked and simultaneously makes it display, on the screen, a command symbol showing switchover of a display image in accordance with point-registered dada. At the time point when it judges that the information on the present position and the position of the command symbol coincide with each other in this state, the CPU 4 starts a timer, makes a specified program received in conformity with the contents of the point-registered data being in coincidence, switches the screen of the monitor 13 over to the specified program and makes it displayed. At the time point when it judges that the time of the timer is up in this state, moreover, the CPU finishes the reception and display of the specified program and makes the monitor return to the display of a map image again.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a car navigation device that displays not only map data but also TV images, FM text multiplex broadcasting, and the like.

[0002]

2. Description of the Related Art In recent years, GPS (Global Posi)
2. Description of the Related Art Navigation devices for automobiles, which utilize the Tioning System), have become widespread. In this type of navigation device, latitude information and longitude information of the current position are calculated based on signals from a plurality of artificial satellites received by a GPS antenna, and roads around the current position are read from a recording medium such as a CD-ROM. Map data consisting of information and place name information is expanded and displayed on a monitor display.

In such a navigation device, usually, a television tuner or a video camera having a reproducing function is additionally connected, or a karaoke music CD or the like is inserted in addition to the above-mentioned CD-ROM, so that only the vicinity of the current position is simply displayed. Not only a map of but also TV and video images,
In many cases, the lyrics image of karaoke or the like can be switched and displayed on the monitor display.

In recent years, FM character multiplex broadcasting has been put into practical use, in which character information is multiplexed and broadcast in the radio wave gap of FM radio broadcasting. As text information to be broadcast, in conjunction with the main audio broadcast, supplementary programs that collect quizzes and requests, display the lyrics and song titles of the songs played, and voice broadcasts such as weather forecasts and traffic information. There are independent programs that broadcast unrelated information. This new broadcast service is commonly referred to as "visible radio."

By additionally connecting a tuner and a decoder for receiving FM character multiplex broadcasting to the navigation device, traffic information such as traffic congestion, accidents, traffic regulations, etc. can be displayed, so that the immediacy is high and extremely high. Something that can carry out useful navigation is also planned and sold.

[0006]

However, when an image other than the map is displayed on the screen of the monitor display as described above, the remote controller, which is the operation unit, naturally differs from the normal navigation operation. You have to operate the keys.

For example, in the case of receiving traffic information by FM character multiplex broadcasting, it is necessary to select FM character multiplex broadcasting, frequency, and program by key operation. In addition to being complicated, it is extremely dangerous to perform such an operation when driving a car.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a car navigation device which is substantially safe and easy to use, because the labor required for switching display screens is greatly simplified. To provide.

[0009]

According to the first aspect of the present invention,
Display unit, map data storage means for storing map data including road information, current position input means for inputting position information indicating the current location at any time, position information obtained by the current position input means, and the map data storage means A map creating means for creating display data of a map including the current location based on the map data stored in the display data, a display data inputting means for inputting display data other than the map, and the display data input above instead of the map display. Condition setting means for setting the switching condition to be set,
The condition detecting means for detecting the establishment of the switching condition set by the condition setting means, and the display data input means instead of the display data of the map created by the map creating means according to the detection result of the condition detecting means. Display switching control means for displaying the input display data on the display unit is provided.

With such a configuration, the map screen and other screens can be automatically switched according to preset conditions, so that the labor required for switching the display screens can be greatly simplified. It can be safe and easy to use.

According to a second aspect of the present invention, a display section and a map data storage means for storing map data including road information,
A map for creating display data of a map including the current location based on the current location input means for inputting the location information indicating the current location at any time, and the location information obtained by the current location input means and the map data stored in the map data storage means. Creating means, display data input means for inputting display data other than a map, condition setting means for setting display data switching conditions, and condition detecting means for detecting establishment of the switching conditions set by the condition setting means. , One of the display data of the map created by the map creating means and the display data input by the display data inputting means is a parent screen using the entire screen of the display unit, and the other one is the parent screen. Display control means for displaying a parent-child screen on the display unit as a child screen embedded in a part of the parent-child screen, and a parent-child screen by the display control means according to the detection result of the condition detection means Characterized by comprising a switching means for switching the state shown in.

With such a configuration, the display state of the parent-child screen using two arbitrarily set display data can be automatically switched according to a preset condition. , It is possible to greatly simplify the labor and the like required to switch the display of the parent-child screen, and to make it safe and easy to use.

The invention according to claim 3 is the invention according to claim 1 or 2, wherein the condition setting means sets position information as a switching condition, and the condition detecting means sets position information set by the condition setting means. It is characterized in that the coincidence between the position information and the position information inputted from the present position input means is detected as the establishment of the switching condition.

With such a configuration, in addition to the operation of the invention described in claim 6, the display state of the parent-child screen can be automatically switched at the time when the preset position is reached. Therefore, it is particularly useful for obtaining a screen corresponding to the position on the map, for example, information on the state of an intersection, a tourist guide, a weather forecast, and the like.

The invention according to claim 4 is the invention according to claim 1 or 2, further comprising time input means for inputting current time information, and the condition setting means sets the time information as a switching condition. The condition detecting means is characterized by detecting a match between the time information set by the condition setting means and the time information input from the time input means as establishment of the switching condition.

With such a configuration, in addition to the operation of the invention described in claim 1 or 2, the display state of the parent-child screen is automatically switched at a preset time. Therefore, it is particularly useful for obtaining a screen corresponding to the time, for example, information such as scheduled news and weather forecast.

According to a fifth aspect of the present invention, in the above-mentioned first or second aspect of the present invention, it is further provided with timing means for timing the set time, and the condition setting means sets time information as a switching condition. The condition detecting means detects that the time information set by the condition setting means has been timed by the timekeeping means as establishment of a switching condition.

With such a configuration, in addition to the operation of the invention described in claim 1 or 2, the display state of the parent-child screen is automatically switched when a preset time elapses. Therefore, for example, when displaying the display data such as a reproduced image of a video tape whose ending time is known, the subsequent display switching operation can be simplified.

According to a sixth aspect of the present invention, in the first or second aspect of the present invention, the display data input means inputs display data including character information, and the condition setting means sets the character information as a switching condition. However, the condition detection means detects that the switching condition is satisfied when the display data input from the display data input means includes the character data set by the condition setting means.

With such a configuration, in addition to the operation of the invention described in claim 1 or 2, when the character information including the preset keyword is received, the display state of the parent-child screen is automatically set. It is possible to selectively obtain only the character information that is particularly relevant to or interested in the user.

The invention according to claim 7 is the invention according to claim 1 or 2, further comprising speed input means for inputting current traveling speed information, wherein the condition setting means uses speed band information as a switching condition. The condition detecting means detects the coincidence between the speed band information set by the condition setting means and the speed information input from the speed input means as establishment of the switching condition.

With such a configuration, in addition to the operation of the invention described in claim 1 or 2, the display state of the parent-child screen is automatically switched in correspondence with the preset speed band. Therefore, for example, switching the relationship between the map display data and the parent-child screens of other display data between when the vehicle is running smoothly and when it is congested, the navigation device should be installed after ensuring driving safety. It can be effectively used as a display other than a map.

The invention described in claim 8 is characterized in that, in the invention described in claim 2, the switching means switches presence / absence of a child screen in the parent-child screen display by the display control means.

With this configuration, in addition to the operation of the invention described in claim 2, the presence / absence of a child screen being displayed on the parent / child screen is switched when the set condition is satisfied.
One screen can be effectively used by arbitrarily setting whether to concentrate on the display data of the displayed parent screen and to acquire other display data as the child screen.

The invention according to claim 9 is characterized in that, in the invention according to claim 2, the switching means replaces the parent screen with the child screen being displayed by the display control means.

With such a configuration, in addition to the operation of the invention described in claim 2, the parent screen and the child screen in the parent-child screen are exchanged when the set condition is satisfied. It is possible to always make the one required at that time the parent screen.

According to a tenth aspect of the present invention, in the above-mentioned second aspect, the switching means switches the display data of the child screen being displayed by the display control means to another display data. And

With such a configuration, in addition to the operation of the invention described in claim 2, it is always necessary to switch the child screen in the parent-child screen to another display data when the set condition is satisfied. Display data can be displayed as a child screen.

[0029]

BEST MODE FOR CARRYING OUT THE INVENTION

(First Embodiment) A first embodiment in which the present invention is applied to a navigation device for an automobile using GPS will be described below with reference to the drawings.

FIG. 1 shows a basic circuit configuration of the entire system. A GPS antenna 1 installed on the roof of a vehicle body and an L1 from the satellite received by the GPS antenna 1 are shown.
Despread the C / A code in the band (1.57542 GHz) L
Decoded and decoded by SI, latitude, longitude, height of the current location,
It has a GPS unit 2 for calculating position information such as time.

The position information of the present position obtained by the GPS unit 2 is sent to the CPU 4 via the system bus 3. This CP
The U4 controls the operation of the entire device while storing various data in the RAM 9 based on the operation program stored in the ROM 10, and includes road information and place name information based on the position information of the current position from the GPS unit 2. The CPU unit peripheral circuit gate array (G / A) is provided with the CD unit 6 in which the CD-ROM 5 which is a recording medium recording the map data is mounted.
The map data of the surrounding area including the current position is read out and sent to the graphic controller 12 together with the position information of the current position.

The graphic controller 12 expands the sent map data on the video RAM 11, adds a mark indicating the current position, and then, for example, a monitor including an LCD panel with a backlight and its drive circuit. Display output is performed by 13.

The CPU peripheral circuit gate array 7 is also connected with a key input section 8 mainly composed of a remote control unit 20 which will be described later in detail, and the CPU 4 controls the operation according to the key input in the key input section 8. To execute.

Further, a television tuner 15, a video input section 16 and a decoder 17 are connected to the system bus 3. The TV tuner 15 selects a channel of a desired channel from the TV broadcast waves received by the connected TV antenna 14 according to a key input on the key input unit 8, and performs intermediate frequency conversion, video detection, and sync separation. After performing various processes such as the above, each signal is digitized and provided to the system bus 3.

The video input section 16 digitizes a video signal input from a video camera having a reproducing function, which is connected through a video input terminal, and digitizes the system bus 3.
To be used for.

The decoder 17 is an FM multiplex receiver 18
The FM antenna 19 is connected via. The FM multiplex receiver 18 tunes the FM broadcast radio wave received by the FM antenna 19 and demodulates the obtained FM signal into a stereo signal.

The decoder 17 performs F by digital modulation for changing the magnitude (level) of the multiplexed signal to 4 to 10% with respect to the modulation degree of the L and R signals of this FM stereo signal.
Character data multiplexed on M broadcast radio waves is converted to L-MSK
(Level controlled Minimum
Separation is performed by performing Shift Keying) demodulation, and error correction processing is performed on the separated character information to obtain correct character data and supply it to the system bus 3.

FIG. 2 shows the external structure of the remote control unit 20 which mainly comprises the key input section 8.
2A is a left side view and FIG. 2B is a top view. The remote control unit 20 is a wired remote controller in which the remote control body case 21 is connected to the CPU peripheral circuit gate array 7 by a cable, and as shown in FIG. Power switch 22 for on / off
Is provided.

As shown in FIG. 2B, the power source LED 23, NAVI /
CD key 24, TV key 25, FM DATA key 2
6, MENU key 27, cursor key 28, ENTER
Key 29, position key (shown as "POS" in the figure)
30, scale change / tuning key 31, MARK key 32, POINT key 33, HOME key 34 and VI
A DEO key 35 is provided.

The power LED 23 is the power switch 22.
Lights red when the power is turned on. NAVI /
The CD key 24 is a key to be operated when the navigation operation is performed in the present apparatus or when a music CD is mounted on the CD section 6 to listen to music.

The TV key 25 is a key operated when the television tuner 15 is used to watch television on the monitor 13, and the FM DATA key 26 is used to display character data by FM data character multiplex broadcasting on the monitor 13. This is a key to be operated when making it.

The MENU key 27 is a key for instructing the display of a menu screen, and the cursor key 28 is a ring-shaped key for instructing the cursor displayed on the display screen of the monitor 13 in the up, down, left, and right directions on the menu screen or the like. , ENTER
A key 29 is a key for operating and instructing an icon or the like pointed by the cursor on the display screen by moving the cursor key 28.

Further, the position key 30 is a key for displaying position information such as latitude and longitude of the current position indexed by the antenna 1 and the GPS block 2, and the scale change / tuning key 31 is displayed during navigation operation. This is a key for instructing up / down tuning at the time of television or radio reception operation while giving an instruction to change the map scale.

Further, the MARK key 32 is a key for marking an arbitrary point on the map data, the POINT key 33 is a key for instructing setting of a destination and screen scrolling toward the destination when the route guidance function is operated, and HOME. Similarly, the key 34 is a key for instructing setting of the present location and screen scrolling to the present location side when the route guidance function is operated.

The VIDEO key 35 is a key operated when the video signal input from the video input section 16 is displayed on the monitor 13 and the video is viewed. Next, the operation of the first embodiment will be described.

Here, an arbitrary position on the map is designated in advance by operating the cursor keys 28 and the like, and points are registered by operating the POINT key 33. Further, instead of displaying the map at this point, FM character multiplex broadcasting is performed. The operation will be described assuming that the display of the weather forecast is switched.

FIG. 3 mainly shows the processing contents during the navigation operation by the CPU 4, and G at a fixed time interval.
Based on the latitude / longitude information of the current location input from the PS section 2, the CD section 6 is accessed through the CPU peripheral circuit gate array 7, the peripheral map data including the current location is read, and the graphic controller 12 together with the location information of the current location.
Then, the monitor 13 displays the map on which the mark of the present location is added (step A1).

At this time, the CPU 4, as shown in FIG.
A command symbol indicating that the display screen is switched according to the content of the point registration data stored in the AM 9 by operating the POINT key 33, that is, an open symbol or a closed symbol is displayed on the map screen.

That is, the RAM 9 displays the position information consisting of latitude and longitude, and displays the FM text multiplex broadcasting program from the map screen at that point, or deletes the FM text multiplex broadcasting program that has been displayed so far. Switching code information indicating whether to return to the map screen and code information of a designated program in FM character multiplex broadcasting (only when switching from map screen to program display of FM character multiplex broadcasting) as one set of point registration data If the point registration data corresponding to the range of the map displayed on the monitor 13 is present, the corresponding open symbol is displayed on the map screen. It is a thing.

FIG. 5A shows an example of the display state on the monitor 13 at this time, and the display screen at the time of reaching the position on the traveling side of the current route together with the vehicle position symbol SS. The open symbol OS indicating that the weather forecast program of FM character multiplex broadcasting is switched from the map is displayed.

The CPU 4 appropriately determines whether or not the current position information and the position of the command symbol match, that is, whether or not the position of the command symbol has been reached, while the map screen is being displayed. (Step A
2) If the position of the command symbol is not reached, the operation of returning to the map display in step A1 is repeated again, thereby waiting for the arrival of the command symbol position while displaying the map screen.

Then, as shown in FIG. 5B, when it is determined in step A2 that the current position information and the position of the command symbol coincide with each other due to the running of the vehicle, the CPU 4 measures a predetermined time internally provided. And activate the timer for
The program is read from the M9, and the designated program is received by the FM multiplex receiver 18 and the decoder 17 according to the contents, and the character information is sent to the graphic controller 12, and the monitor 13
The screen is switched by and is displayed (step A3).

FIG. 5C shows an example of the display state on the monitor 13 at this time, and most of the screen is
The program being received, here the contents of the weather forecast, is displayed, and the frequency of the FM character multiplex broadcast being received and the contents of the program can be changed or the original map screen can be restored by using the cursor keys 28 of the remote control unit 20 and ENTER key 2
The icon for manually setting by the operation of 9 is displayed.

Thus, while the designated program of the FM text multiplex broadcasting is displayed, the CPU 4 instructs the return to the original map screen in the icon and the cursor key 28 and EN.
It is judged whether or not there is a key operation by the TER key 29 (step A4), and if not, then it is judged by the internal timer whether or not the counting of the predetermined time is finished (step A4).
5) If it is not finished, the operation of returning to the display of the designated program in step A3 again is repeated, and the key operation for switching the screen while displaying the designated program and the time-up by the timer are waited.

At this time, the cursor key 28 and ENTER
When a key operation for instructing a change of the program content is made by the key 29 instead of returning to the original map screen, the program content is changed in response to the key operation and the timing by the timer is reset.

At steps A4 and A5, when it is determined that the key operation for instructing the return to the original map screen or the time up by the timer has occurred, the reception and display of this FM text multiplex broadcast are finished, and the operation is resumed. Step A above
It is to return to the display operation of the map screen from 1.

As described above, since the screen can be automatically switched when the preset position is reached, the screen corresponding to the position on the map, for example, the weather forecast or the CD set in the CPU 4 can be selected. -Useful when obtaining information such as a tourist guide using the ROM5.

(Second Embodiment) Hereinafter, the present invention will be described with reference to GPS.
A second embodiment will be described with reference to the drawings when it is applied to a vehicle navigation device using the.

The basic circuit configuration of the entire system and the external configuration of the remote control unit are the same as those shown in FIGS. 1 and 2, and their illustration and description are omitted. Next, the operation of the second embodiment will be described.

Here, an arbitrary time is designated in advance, and when the designated time comes, instead of displaying the map, for example, FM is displayed.
The operation will be described assuming that the display of the character multiplex broadcasting is switched.

FIG. 6 mainly shows the processing contents during the navigation operation by the CPU 4, and G at a fixed time interval.
Based on the latitude / longitude information of the current location input from the PS section 2, the CD section 6 is accessed through the CPU peripheral circuit gate array 7, the peripheral map data including the current location is read, and the graphic controller 12 together with the location information of the current location.
Then, the monitor 13 displays the map with the mark of the current location added (step B1).

At this time, the CPU 4, as shown in FIG.
A command symbol that indicates that the display screen is switched according to the contents of the data at the specified time stored in AM9,
That is, the oven symbol or the close symbol is displayed on the map screen.

That is, the RAM 9 displays the information on the designated time, whether the FM teletext program is displayed from the map screen at that time, or the FM that has been displayed until then.
A plurality of sets of time data are stored with the switching code information indicating whether to erase the program of the character multiplex broadcasting and returning to the map screen and the code information of the designated program in the FM character multiplex broadcasting as one set of time data. The open symbol corresponding to the time is displayed at one end of the map displayed on the monitor 13.

FIG. 8A shows an example of the display state on the monitor 13 at this time, and the display screen is displayed on the upper right end portion of the screen together with the vehicle position symbol SS from the map to the news of the FM text multiplex broadcast. The open symbol OS indicating switching to the program is displayed together with the designated time.

Further, in receiving the position information of the present location from the GPS unit 2, it is possible to obtain the accurate time information of the present as well as the latitude / longitude information, and the CPU 4 makes the map screen as described above. It is determined whether the obtained accurate time information and the time information stored in the RAM 9 match in the display state of, that is, the designated time has come (step B2), and the time comes. If not, the operation of returning to the map display of step B1 is repeated again, and the map screen is displayed and the specified time is waited.

When it is determined in step B2 that the designated time has come, the CPU 4 activates a timer provided inside for counting a predetermined time, and the time data at the designated time is next stored from the RAM 9 from the RAM 9. The program is read out, the designated program is received by the FM multiplex receiver 18 and the decoder 17 according to the contents, and the character information is sent to the graphic controller 12, and the screen is switched and displayed on the monitor 13 (step B3).

FIG. 8B exemplifies the display state on the monitor 13 at this time, and most of the screen is
The program being received, here the contents of the news, is displayed, and the frequency of the FM character multiplex broadcast being received and the contents of the program can be changed or the original map screen can be restored by using the cursor keys 28 and ENTER of the remote control unit 20. Key 2
The icon for manually setting by the operation of 9 is displayed.

Thus, in the state where the designated program of the FM text multiplex broadcasting is displayed, the CPU 4 instructs the return to the original map screen in the icon and the cursor key 28 and EN.
It is determined whether or not there is a key operation by the TER key 29 (step B4). If not, then it is determined by an internal timer whether or not the predetermined time has been measured (step B).
5) If it is not finished, the operation of returning to the display of the designated program in step B3 again is repeated to wait for the key operation for switching the screen while the designated program is displayed and the time-up by the timer.

At this time, the cursor key 28 and ENTER
When a key operation for instructing a change of the program content is made by the key 29 instead of returning to the original map screen, the program content is changed in response to the key operation and the timing by the timer is reset.

At steps B4 and B5, when it is judged that the key operation for instructing the return to the original map screen or the time up by the timer has occurred, the reception and display of this FM text multiplex broadcast are finished and the time is again displayed. Step B above
It is to return to the display operation of the map screen from 1.

In this way, the screen can be automatically switched at the time when the preset time comes,
This is especially useful when obtaining information such as a time forecast, news, traffic information, etc. corresponding to the time of day.

Instead of the time, a time from the present time until the screen is switched may be set. (Third Embodiment) A third embodiment in which the present invention is applied to a navigation device for an automobile using GPS will be described below with reference to the drawings.

The basic circuit configuration of the entire system and the external configuration of the remote control unit are the same as those shown in FIGS. 1 and 2, and illustration and description thereof will be omitted. Next, the operation of the third embodiment will be described.

Here, if an arbitrary keyword is designated in advance, FM text broadcasting is continuously received while no display is performed, and if the received character information includes the designated keyword, this is judged. The operation will now be described assuming that the display of the FM text multiplex broadcast is switched instead of the display of the map so far.

FIG. 9 mainly shows the processing contents of the CPU 4 during the navigation operation.
Based on the latitude / longitude information of the current location input from the PS section 2, the CD section 6 is accessed through the CPU peripheral circuit gate array 7, the peripheral map data including the current location is read, and the graphic controller 12 together with the location information of the current location.
Then, the monitor 13 displays the map with the mark of the current location added (step C1).

At this time, the CPU 4 displays a command symbol indicating that the display screen is switched according to the content of the data of the designated keyword stored in the RAM 9, that is, an open symbol on the map screen.

That is, the RAM 9 stores a plurality of sets of keyword data, with the information of the designated keyword and the code information of the designated program in the FM character multiplex broadcasting as one set of keyword data. The keyword is displayed together with the open symbol at one end of the displayed map.

At the same time as displaying such a map, the CPU 4
Activates the FM multiplex receiver 18 and the decoder 17, inputs the designated frequency and the character information of the designated program at any time, and RA
The area corresponding to the capacity is continuously held in one area of M9 (step C2), and it is judged whether or not the specified keyword is included in the held character information (step C3). If not, the operation of returning to the map display of step C1 again is repeated, and the map screen is displayed and the reception of the character information including the keyword is awaited.

Then, when it is determined that the character information including the keyword specified in step C3 is received, C
The PU 4 starts a timer for counting a predetermined time provided inside, and then causes the graphic controller 12 to send the character information of the designated program to the monitor 13
The screen is switched by and is displayed (step C4).

At this time, on the monitor 13, most of the screen is used to display the received program, and the frequency of the received FM text multiplex broadcast and the program contents are changed or the original map screen is displayed. An icon for manually setting the return by operating the cursor key 28 and the ENTER key 29 of the remote control unit 20 is displayed.

Thus, in the state where the designated program of FM text multiplex broadcasting is displayed, the CPU 4 causes the cursor key 28 and EN to instruct to return to the original map screen in the icon.
It is judged whether or not there is a key operation by the TER key 29 (step C5), and if not, then it is judged by the internal timer whether or not the counting of the predetermined time is finished (step C).
6) If it is not finished, the operation of returning to the display of the designated program in step C4 again is repeated to wait for the key operation for switching the screen while the designated program is displayed and the time-up by the timer.

At this time, the cursor key 28 and the ENTER
When a key operation for instructing a change of the program content is made by the key 29 instead of returning to the original map screen, the program content is changed in response to the key operation and the timing by the timer is reset.

At steps C5 and C6, when it is determined that the key operation for instructing the return to the original map screen or the time up by the timer has been made, the display of the FM text multiplex broadcast is terminated, and the above steps are performed again. The operation returns to the display operation of the map screen from C1.

As described above, the screen can be automatically switched at the time of receiving the character information including the keyword specified in advance, so that only the character information particularly relevant to oneself or interested is automatically You can select and display it, without displaying more character information on the screen,
It is possible to prevent the screen other than the map screen from being displayed unnecessarily.

(Fourth Embodiment) The present invention will be described below with reference to GPS.
A fourth embodiment will be described with reference to the drawings when applied to a navigation device for an automobile using the.

The basic circuit configuration of the entire system and the external configuration of the remote control unit are the same as those shown in FIGS. 1 and 2, and their illustration and description are omitted. Next, the operation of the above fourth embodiment will be described.

Here, it is assumed that some speed bands are designated in advance, and when the running speed of the own vehicle reaches the speed band, the display of, for example, FM text multiplex broadcasting is switched instead of the display of the map. Will be explained.

FIG. 10 mainly shows the contents of processing by the CPU 4 during the navigation operation. Based on the latitude / longitude information of the current position inputted from the GPS section 2 at a constant time interval, the CD is passed through the CPU peripheral circuit gate array 7. Part 6
To read the map data of the surrounding area including the current location, and to add the position information of the current location to the graphic controller 1
Then, the monitor 13 displays the map on which the mark of the current position is added (step D1).

At this time, the CPU 4 calculates the traveling speed information of the vehicle from the time series of the current position information, or inputs the speed information directly from the vehicle speed sensor for autonomous navigation, which is not shown in FIG. At the same time, depending on the contents of the data of the designated speed band stored in the RAM 9 as shown in FIG. 11, first, the current speed information of the own vehicle is within the first speed band a, 0 [km / km here]. Time] or more 10 [km /
Time] is determined (step D2).

That is, the RAM 9 stores information on the specified speed band, and when the speed band is reached, the F-screen is displayed on the map screen.
Switching code information indicating whether to display the M character multiplex broadcasting program or to delete the FM character multiplex broadcasting program that has been displayed until then and return to the map screen, and FM
A plurality of sets of time data are stored with the code information of the designated program in the character multiplex broadcasting as one set of time data.

When the CPU 4 determines in step D2 that the current speed information of the host vehicle is not within the first speed band a as described above, the CPU 4 subsequently determines that the current speed information of the host vehicle is in the second speed band b. Of which, here 10 [km / hr] or more and 20 [k
m / hour] is determined (step D7).

When it is determined in step D7 that the current speed information of the vehicle is not within the second speed band b,
Further, it is determined whether or not the current speed information of the host vehicle is within the third speed band c, here 60 [km / hour] or more (step D12).

Thus, the current speed information of the vehicle is stored in the RAM.
By continuously determining whether or not any of the plurality of speed bands set in 9 is met, and if none of the speed bands is met, the operation of returning to the map display of step D1 again is repeated. , Waiting for one of the specified speed bands while displaying the map screen.

When it is determined for the first time in step D2 that the current speed information of the vehicle is within the first speed band a, the CPU 4 has a predetermined time, for example, 5
A timer for counting minutes is started, and subsequently it is determined whether or not this timer has reached the above-mentioned predetermined time (step D).
3).

This timer is used to distinguish a state in which the speed information of the vehicle is temporarily reduced due to, for example, waiting for a signal or a temporary stop from a state in which the speed is reduced for a longer time due to, for example, traffic jam, The time is measured within the same speed band, and when it is determined that the measured value does not reach the predetermined time, the process directly proceeds to step D7 and waits for any one of the corresponding speed bands. To do.

Thus, steps D1 to D3, D7 and D1
When the judgment that the current speed information of the own vehicle is within the first speed band a continues for a predetermined time by repeating the process of 2, the CPU 4 judges this by the contents of the timer, and the corresponding switching code According to the information and the information of the first designated program, the first designated program, here the weather forecast, is received by the FM multiplex receiver 18 and the decoder 17, and the character information is sent to the graphic controller 12, and the screen is displayed on the monitor 13. The display is switched (step D4).

In this way, while the first designated program of the FM text multiplex broadcasting is displayed, the CPU 4 judges whether or not there is a key operation for instructing the return to the original map screen (step D5), Next, it is confirmed whether or not the current speed information of the vehicle is still within the first speed band a (step D
6) If the speed is within the first speed band a, the above step D is performed again.
By repeating the operation of returning to the display of the first designated program of 4, the key operation for switching the screen while displaying the first designated program and the change to another speed band are waited.

At this time, the cursor key 28 and ENTER
When a key operation for instructing the change of the program content is made by the key 29, the program content is changed corresponding to the key operation.

When it is determined in steps D5 and D6 that there is a key operation for instructing the return to the original map screen or a change to another speed band, the first designated program of this FM text multiplex broadcasting. After finishing the reception and display of the timer and clearing the time count of the timer, the process proceeds to step D7, and the process of steps D1, D2, D7 and D12 is repeated to wait for any one of the corresponding speed bands. Run.

After that, when it is determined that the current speed information of the own vehicle is within the second speed band b for the first time in step D7, the CPU 4 restarts the timer, and then the timer continues to the predetermined time. If it is determined that the measured value has not reached the predetermined time, the process directly proceeds to step D12 and waits for any one of the speed bands.

However, these steps D1, D2, D
If it is determined that the current speed information of the vehicle is within the second speed band b by repeating the processing of 7, D8, and D12 for a predetermined time, the CPU 4 determines this by the content of the timer, Based on the corresponding switching code information of the RAM 9 and the information of the second designated program, the second designated program, here the traffic information is received by the FM multiplex receiver 18 and the decoder 17, and the character information is sent to the graphic controller 12. , The screen is switched and displayed on the monitor 13 (step D9).

Thus, while the second designated program of the FM text multiplex broadcasting is displayed, the CPU 4 judges whether or not there is a key operation for instructing the return to the original map screen (step D10), Then, it is confirmed whether or not the current speed information of the own vehicle is still within the second speed band b (step D11), and if it is within the second speed band b, the second step of step D9 is performed again. By repeating the operation of returning to the display of the designated program of (1), the key operation for switching the screen while displaying the second designated program and the change to another speed band are waited.

Also at this time, the cursor key 28 and the ENT
When a key operation for instructing the change of the program content is made by the ER key 29, the program content is changed corresponding to the key operation.

Then, when it is determined in steps D10 and D11 that there is a key operation for instructing the return to the original map screen or a change to another speed band, the second designated program of this FM text multiplex broadcasting. After finishing the reception and display of the timer and clearing the time count of the timer, the process proceeds to step D12, and the process of steps D1, D2, D7 and D12 is repeated to wait for any one of the corresponding speed bands. Run.

After that, when it is determined that the current speed information of the vehicle is within the third speed band c for the first time in step D12, the CPU 4 uses the corresponding switching code information in the RAM 9 to perform the navigation operation based on the map display so far. Is temporarily stopped (step D13).

Since the temporary suspension of the map display is within the third speed band c, here 60 [km / hour] or more, it is dangerous to drive while watching the monitor 13.
This is a process for devoting attention to driving, and in the state where the map display is temporarily stopped in this way, the CPU 4 intentionally determines whether or not there is a key operation for displaying the map screen (step D14), If not, then it is confirmed whether or not the current speed information of the own vehicle is still within the third speed band c (step D15). If it is within the third speed band c, the display of step D13 is again performed. By repeating the operation of returning to the stopped state display, the key operation for displaying the screen and the change to another speed band are awaited while the display of the map screen is stopped.

When it is determined in steps D14 and D15 that there is a key operation for displaying the map screen or a change to another speed band, the display stop state is released, and the process proceeds to step D1. The processing of steps D1, D2, D7, and D12 that waits again for any one of the corresponding speed bands is repeatedly executed.

As described above, the screen can be automatically switched at the time when the traveling speed of the vehicle becomes one of a plurality of preset speed regions. In this case, particularly when the traveling speed falls below the normal traveling speed range, the speed band is set stepwise as illustrated in the above operation, for example, 10
In the speed band of [km / hour] or more and less than 20 [km / hour], it is assumed that there is some congestion but there is some flow, and the situation is beginning to become congested, trying to get out of congestion, or relatively light congestion. While switching to the display of traffic information to confirm the degree or cause of the congestion, it is assumed that the flow is almost stopped in the speed band of less than 10 [km / hour], for example. In order to make it confusing, it is possible to change the display to the weather forecast, and to make detailed settings step by step according to the state.

Further, as illustrated in the above operation, in a high speed band, in order to avoid a dangerous state in which the monitor 13 neglects the attention in the front and the response is delayed, It is also possible to make settings in consideration of safety, such as temporarily stopping all displays including the map screen. In this case, although the speed band is high, for example, when driving on a highway, there are few points to be considered such as traffic lights, pedestrians, temporary stops, etc. like ordinary roads, and if there is some driving margin, As described above, it is possible to intentionally perform a key operation for turning on the display.

In each of the above-described first to fourth embodiments, the basic display screen is the map screen by navigation, and when the specified conditions are satisfied, the characters of the designated program of the FM character multiplex broadcasting are displayed. Although it is assumed that the screen is switched and displayed by the information, the present invention is not limited to this, and other screens such as a TV screen obtained by the TV tuner 15 and the video input unit 16 as shown in FIG. It goes without saying that it is also possible to switch to different video images and also to other various screens not shown in FIG.

(Fifth Embodiment) The present invention will be described below with reference to GPS.
A fifth embodiment will be described with reference to the drawings when applied to a navigation device for an automobile using the.

The basic circuit configuration of the entire system and the external configuration of the remote control unit are the same as those shown in FIGS. 1 and 2, and their illustration and description are omitted. Next, the operation of the fifth embodiment will be described.

Here, a plurality of cases, for example, four cases in which a condition is designated in advance and the display state of the parent-child screen is switched when the condition is satisfied are set, and each case is described as an operation example.

FIG. 12 exemplifies the screen in the setting mode for setting the above-mentioned four cases. The parent screen, the initial child screen, the child screen after switching, and the switching method are set for each case. Has become.

The parent screen, the initial child screen, and the child screen after the switching are respectively operated by operating the cursor key 28 and the cursor C.
To the desired setting and enter key 29
Every time when is operated, “map”, “television”, “FM multiplex”, “video”, and “none” are sequentially cyclically switched and displayed.

By operating the scale changing / tuning key 31 with the cursor C particularly on the display of "FM multiplex", a window for selecting a program of FM text multiplex broadcasting is displayed on the screen, and "Traffic information""Weatherforecast""Complementary program (of FM broadcast)" in the window
The program name such as "" is displayed together with the cursor. The scale change / tuning key 31 is operated to move the cursor to the position of the desired program name, and then the cursor key 2
The program selection is executed by moving the cursor C to another setting position by pressing 8.

When "SET" on the right side is selected and the ENTER key 29 is operated in the state where the desired contents are displayed, the operation of this setting mode is finished and all the set contents are stored in a predetermined area of the RAM 9. After that, the screen is switched, and the operation for selecting which of the following cases (1) to (3) to be executed is performed.

Next, an actual operation example in each of the above cases 1 to 3 will be described. FIG. 13 shows the processing contents in the operation example of the case, and the CPU is based on the latitude / longitude information of the current position input from the GPS unit 2 at a constant time interval while the map is not initially displayed. While accessing the CD section 6 through the peripheral circuit gate array 7 and reading out the map data of the surrounding area including the current location, the TV broadcast input from the TV tuner 15 as the display data of the initial parent-child screen according to the set contents. Is sent to the graphic controller 12 without displaying the parent screen and the child screen, and only the TV screen is displayed on the monitor 13 as shown in FIG. 14A (step E).
1).

At this time, the CPU 4 calculates information on the traveling direction of the own vehicle from the time series of the current position information, and proceeds with the calculated traveling direction of the own vehicle and the latitude / longitude information of the current location, and the surrounding map data. A certain distance in the direction, eg 500
It is judged whether there is an intersection within [m] (step E).
2).

If it is determined that there is no intersection, the process returns to step E1 to wait for the approach of the intersection while displaying the screen of the television broadcast.
Then, when it is determined that there is an intersection within a certain distance in the traveling direction and it is before the intersection, the map display data is also sent to the graphic controller 12, and the monitor 13
Then, as shown in FIG. 14 (b), the display data of the television is switched to the parent screen, and the display data of the map is switched to display the parent-child screen (step E3).

At this time, when the route guidance function is being executed at the same time, the route guidance on the map is also displayed separately from other roads by color or the like. With this parent-child screen displayed, it is determined whether or not the intersection has passed through the latitude / longitude information of the current value and the map data (step E4). If it is determined that the intersection has not passed, the above step E3 continues.
The display of the parent-child screen is continued by returning to the processing from.

When it is determined that the intersection has been passed, the process returns to step E1 again to cancel the parent-child screen, and waits until the next intersection is approached while displaying only the television broadcast screen. , Is repeated.

As described above, in the first operation example according to the fifth embodiment, the display state of the parent-child screen can be automatically switched at the time when the preset position is reached. It is possible to obtain a desired screen only when necessary corresponding to the position above.

Next, FIG. 15 shows the processing contents in the operation example of the case of FIG. 15, and at the beginning, latitude / longitude information of the current position inputted from the GPS unit 2 at a constant time interval as display data of the initial parent-child screen. Based on the above, the CD section 6 is accessed through the CPU peripheral circuit gate array 7, the peripheral map data including the current location is read out and sent to the graphic controller 12, and at the same time, the display data of the television broadcast inputted from the television tuner 15 is also outputted. The data is sent to the graphic controller 12, and the display data of the map is used as the main screen and the display data of the television broadcast is used as the child screen.
The parent-child screen is displayed as shown in (a) (step F
1).

At this time, the CPU 4 calculates the traveling speed information of the vehicle from the time series of the current position information, or inputs the speed information directly from the vehicle speed sensor for autonomous navigation, which is not shown in FIG. At the same time, it is determined whether or not the current speed information of the own vehicle is less than 20 [km / hour] (step F2).

That is, the CPU 4 judges whether or not the vehicle is currently involved in a traffic jam.
If it is determined that the speed is 0 [km / hour] or more, the process returns to the initial parent-child screen display process in step F1 again, so that the speed information of the vehicle becomes less than 20 [km / hour]. stand by. Then, when it is determined in step F2 that the speed information of the vehicle is less than 20 [km / hour] for the first time,
The CPU 4 activates a timer provided inside for measuring a predetermined time, for example, 5 minutes, and subsequently determines whether or not the timer reaches the predetermined time (step F3).

This timer is used for distinguishing a state in which the speed information of the vehicle is temporarily reduced due to, for example, waiting for a signal or a temporary stop from a state in which the speed is reduced for a longer time due to, for example, traffic jam, The time is measured within the same speed band, and when it is determined that the measured value does not reach the predetermined time, the process directly returns to step F1 and waits for any one of the above speed bands. To do.

When the judgment that the current speed information of the own vehicle is less than 20 [km / hour] continues for a predetermined time by repeating the processing of steps F1 to F3 in this way, the CPU 4
16 judges the contents of the timer and replaces the parent and child screens so far with the graphic controller 12, that is, this time, the monitor 13 displays the map display data as the parent screen and the television display data as the child screen. Switch to display the parent-child screen as shown in b) (step F).
4).

In the state where the parent and child screens are interchanged and displayed in this way, the CPU 4 determines that the current speed information of the vehicle is 2
It is judged whether or not it is 0 [km / hour] or more, that is, whether or not the own vehicle is released from the traffic jam (step F5), and when it is judged that it is still less than 20 [km / hour], the above step is continued. By returning to the processing from E4, the display with the parent-child screens replaced is continued.

Then, the speed information of the own vehicle is 20 [km / km
When the above is reached and it is determined that the own vehicle is released from the traffic jam, the processing returns to the processing from step E1 again and waits for the next traffic jam while executing the display state of the original parent-child screen again. It repeats.

As described above, in the second operation example according to the fifth embodiment, it is possible to automatically switch the display state of the parent-child screen at the time when the speed becomes a preset value, so that the running state It is possible to obtain a desired screen after ensuring safety in accordance with.

Next, FIG. 17 shows the processing contents in the operation example of the case of FIG. 17, in which initially the CPU 4 inputs the latitude / current of the current position input from the GPS unit 2 at a constant time interval as the display data of the initial parent-child screen. The CD unit 6 is accessed via the CPU peripheral circuit gate array 7 based on the longitude information,
At the same time as reading out the map data of the surrounding area including the current location and sending it to the graphic controller 12, the video input unit 1
The display data of the video signal from the externally connected video device input from 6 is also sent to the graphic controller 12, and the display data of the map is used as the parent screen and the display data of the video signal is used as the child screen. The parent-child screen is displayed as shown in () (step G1).

At this time, the CPU 4 starts measuring the time of 2 hours by the timer provided therein according to the setting contents stored in the RAM 9, and thereafter judges whether or not the measured value of this timer becomes 2 hours. (Step G2).

That is, the CPU 4 judges whether or not the set time has elapsed. If it is judged that the time has not yet elapsed, the CPU 4 returns to the initial parent-child screen display process of step F1 again, and Wait for time to elapse. Then, when it is determined in step G2 that two hours have passed, the CPU 4 instructs the graphic controller 12 to replace the child screen based on the display data of the video signal up to that time, by the FM character multiplex broadcasting from the decoder 17 this time. With the display data of the traffic information as a new child screen, the monitor 13 is switched to display the parent-child screen as shown in FIG. 18B (step G3), and the switching process is completed.

As described above, in the third operation example according to the fifth embodiment, the display state of the parent-child screen can be automatically switched when the preset time elapses. When the display data whose length is known in advance, for example, a video signal from a video camera having a reproducing function is displayed, the subsequent switching operation can be omitted.

Next, FIG. 19 shows the processing contents in the operation example of the case of FIG. 19, and at that time, the CPU 4 initially inputs the latitude / longitude of the current position input from the GPS unit 2 as display data of the initial parent-child screen at a constant time interval. The CD unit 6 is accessed via the CPU peripheral circuit gate array 7 based on the longitude information,
At the same time as reading the map data of the surrounding area including the current location and sending it to the graphic controller 12, the display data of the TV broadcast input from the TV tuner 15 is also sent to the graphic controller 12, and the map display data is displayed on the main screen and the TV broadcast Monitor 1 with data as child screen
In step 3, a parent-child screen is displayed as shown in FIG. 20 (a) (step H1).

At this time, the CPU 4 stores in the RAM the current time information input from the GPS unit 2 together with the current position information.
It is determined whether or not the setting content stored in 9 is set to 2:00 pm (step H2).

That is, the CPU 4 waits for the arrival of the set time, and when it is determined that the set time has not come, the CPU 4 returns to the initial parent-child screen display processing in step F1. Then, when it is determined in step H2 that the set time has come, the CPU 4 instructs the graphic controller 12 to replace the child screen based on the display data of the television broadcast up to that time with the FM character multiplex broadcast from the decoder 17. As a new child screen, the display data of the complementary program of the audio broadcast is displayed on the monitor 13 as shown in FIG.
As shown in (b), it is switched to display the parent-child screen (step H3), and the switching process is completed.

As described above, in the fourth operation example according to the fifth embodiment, the display state of the parent-child screen can be automatically switched at the time when the preset time is reached, so that the television broadcast When displaying display data whose information is known in advance, such as or FM text multiplex broadcasting,
It is possible to surely execute the switching operation without forgetting to obtain the information.

Although not shown in the operation example of the fifth embodiment, a keyword specified in advance as shown in the third embodiment is included as a condition for switching the display state of the parent-child screen. It is also possible to detect this when the received character information is received. When such a switching condition is set, it is possible to automatically select and display only the character information that is particularly relevant to you or your interests, without displaying more character information than necessary on the screen. You can save the trouble of switching the display state of the screen to.

[0141]

According to the first aspect of the invention, the map screen and other screens can be automatically switched according to preset conditions, so that the time and effort required for switching the display screens can be greatly reduced. It can be simplified to be safe and easy to use.

According to the second aspect of the present invention, it is possible to automatically switch the display state of the parent-child screen using two arbitrarily set display data from a plurality of display data according to a preset condition. Therefore, the labor and the like required for switching the display of the parent-child screen can be greatly simplified, and the display can be made safe and easy to use.

According to the invention described in claim 3, in addition to the effect of the invention described in claim 1 or 2, the display state of the parent-child screen is automatically switched when the preset position is reached. Therefore, it is particularly useful when a screen corresponding to the position on the map, for example, information about the state of an intersection, a tourist guide, a weather forecast, etc. is obtained.

According to the invention of claim 4, in addition to the effect of the invention of claim 1 or 2, the display state of the parent-child screen is automatically switched at a preset time. Therefore, it is particularly useful for obtaining a screen corresponding to time, for example, information such as scheduled news and weather forecast.

According to the invention of claim 5, in addition to the effect of the invention of claim 1 or 2, the display state of the parent-child screen is automatically switched when a preset time has elapsed. Therefore, it is possible to simplify the subsequent display switching operation in the case of displaying display data such as a reproduced image of a video tape for which the ending time is known in advance.

According to the invention of claim 6, in addition to the effect of the invention of claim 1 or 2, the display state of the parent-child screen is changed when the character information including the preset keyword is received. Since it is possible to switch automatically, it is possible to selectively obtain only the character information that is particularly relevant or interesting to the user.

According to the invention of claim 7, in addition to the effect of the invention of claim 1 or 2, the display state of the parent-child screen is automatically switched corresponding to a preset speed band. Therefore, it is possible to ensure the safety of driving by switching the relationship between the map display data and the parent-child screens of other display data between when the vehicle is running smoothly and when it is congested. Can be effectively used as a display other than a map.

According to the invention described in claim 8, in addition to the effect of the invention described in claim 2, since the presence or absence of the child screen being displayed in the parent-child screen is switched when the set condition is satisfied,
One screen can be effectively used by arbitrarily setting whether to concentrate on the display data of the displayed parent screen and to acquire other display data as the child screen.

According to the invention described in claim 9, in addition to the effect of the invention described in claim 2, since the parent screen and the child screen in the parent-child screen are switched when the set condition is satisfied, the parent-child screen The person who needs it at that time can always be made the parent screen.

In addition to the effect of the invention described in claim 2, the invention described in claim 10 is always necessary because the child screen in the parent-child screen is switched to another display data when the set condition is satisfied. The display data can be displayed as a child screen.

[Brief description of drawings]

FIG. 1 is a block diagram showing a basic circuit configuration of an entire system according to a first embodiment of the present invention.

FIG. 2 is a diagram showing an external configuration of the remote control unit according to the embodiment.

FIG. 3 is a flowchart showing processing contents during navigation operation according to the same embodiment.

FIG. 4 is a diagram showing a structure of data representing a switching condition set in the RAM according to the same embodiment.

FIG. 5 is a diagram exemplifying a switching state of a display screen according to the same embodiment.

FIG. 6 is a flowchart showing processing contents during navigation operation according to the second embodiment of the present invention.

FIG. 7 is a view showing a structure of data representing a switching condition set in the RAM according to the same embodiment.

FIG. 8 is a diagram exemplifying a switching state of a display screen according to the same embodiment.

FIG. 9 is a flowchart showing processing contents during navigation operation according to the third embodiment of the present invention.

FIG. 10 is a flowchart showing the processing contents during navigation operation according to the fourth embodiment of the present invention.

FIG. 11 is a diagram showing a configuration of data representing a switching condition set in the RAM according to the same embodiment.

FIG. 12 is a diagram exemplifying a display screen when setting a switching condition according to a fifth embodiment of the present invention.

FIG. 13 is a flowchart showing the processing contents of a first operation example according to the same embodiment.

FIG. 14 is a diagram exemplifying a switching state of the display screen in the first operation example according to the embodiment.

FIG. 15 is a flowchart showing the processing contents of a second operation example according to the same embodiment.

FIG. 16 is a diagram exemplifying a switching state of display screens in a second operation example according to the embodiment.

FIG. 17 is a flowchart showing the processing contents of a third operation example according to the embodiment.

FIG. 18 is a view exemplifying a switching state of display screens in a third operation example according to the embodiment.

FIG. 19 is a flowchart showing the processing contents of a fourth operation example according to the embodiment.

FIG. 20 is a diagram exemplifying a switching state of display screens in a fourth operation example according to the embodiment.

[Explanation of symbols]

 1 ... GPS antenna 2 ... GPS part 3 ... System bus 4 ... CPU 5 ... CD-ROM 6 ... CD part 7 ... CPU peripheral circuit gate array 8 ... Key input part 9 ... RAM 10 ... ROM 11 ... Video RAM 12 ... Graphic controller Reference numeral 13 ... Monitor 14 ... TV antenna 15 ... TV tuner 16 ... Video input section 17 ... Decoder 18 ... FM multiplex receiver 19 ... FM antenna 20 ... Remote control unit 21 ... Remote control body case 22 ... Power switch 23 ... Power supply LED 24 ... NAVI / CD key 25 ... TV key 26 ... FM DATA key 27 ... MENU key 28 ... Cursor key 29 ... ENTER key 30 ... Position key 31 ... Scale change / tuning key 32 ... MARK key 33 ... POINT key 34 ... HOME key 35 ... VIDEO key

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Internal reference number FI Technical display location H04N 5/91 G06F 15/62 335 7/18 H04N 5/91 E

Claims (10)

[Claims] 1. A display unit, map data storage means for storing map data including road information, current position input means for inputting position information indicating the current location at any time, and position information obtained by the current position input means. A map creating means for creating display data of a map including the current location based on the map data stored in the map data storing means, a display data input means for inputting display data other than the map, and the above input instead of the map display. Condition setting means for setting the switching condition for displaying the displayed display data, condition detecting means for detecting establishment of the switching condition set by the condition setting means, and the map creating means according to the detection result of the condition detecting means. The display switching control means for displaying the display data input from the display data input means on the display section instead of the display data of the map created by And a car navigation device. 2. A display unit, a map data storage means for storing map data including road information, a current position input means for inputting position information indicating the current location at any time, and position information obtained by the current position input means. A map creating means for creating display data of a map including the current location based on the map data stored in the map data storing means, a display data inputting means for inputting display data other than the map, and a display data switching condition are set. The condition setting means, the condition detecting means for detecting the establishment of the switching condition set by the condition setting means, and the display data of the map created by the map creating means and the display data input from the display data inputting means. 1
Display control means for displaying a parent screen on the display unit as one of the parent screens using the entire screen of the display unit and another one as a child screen fitted in a part of the parent screen; A car navigation device comprising a switching means for switching the state of parent-child screen display by the display control means according to the detection result of the means. 3. The condition setting means sets position information as a switching condition, and the condition detecting means switches matching between the position information set by the condition setting means and the position information input from the current position input means. The car navigation device according to claim 1 or 2, wherein the car navigation device detects the condition. 4. The time inputting means for inputting current time information is further provided, the condition setting means sets the time information as a switching condition, and the condition detecting means and the time information set by the condition setting means and the 3. The car navigation device according to claim 1, wherein a match with time information input from the time input means is detected as establishment of a switching condition. 5. The apparatus further comprises clocking means for clocking the set time, wherein the condition setting means sets time information as a switching condition, and the condition detecting means uses the time information set by the condition setting means. 3. The method according to claim 1, wherein the completion of the time counting by the time counting means is detected as the establishment of the switching condition.
Car navigation device according to. 6. The display data input means inputs display data including character information, the condition setting means sets character information as a switching condition, and the condition detection means displays a display input from the display data input means. 3. The car navigation system according to claim 1, wherein the establishment of the switching condition is detected when the data includes character data set by the condition setting means. 7. The vehicle further comprises speed input means for inputting current traveling speed information, wherein the condition setting means sets speed information as a switching condition, and the condition detecting means detects the speed information set by the condition setting means. The car navigation device according to claim 1 or 2, wherein a match with speed information input from the speed input means is detected as establishment of a switching condition. 8. The car navigation system according to claim 2, wherein the switching means switches presence / absence of a child screen being displayed on the parent / child screen by the display control means. 9. The car navigation system according to claim 2, wherein the switching means replaces the parent screen with the child screen being displayed by the display control means. 10. The car navigation device according to claim 2, wherein the switching means switches the display data of the child screen being displayed by the display control means to another display data.