JP5040545B2 - Navigation device - Google Patents

Description

  The present invention relates to a navigation device, and more particularly to a technique for controlling a screen displayed on a display device of the navigation device.

  The navigation device has many functions, and some of the functions cannot be executed unless a predetermined screen is displayed on the display device by operating the buttons a plurality of times. Further, depending on the function, after displaying a predetermined screen, it is necessary to input characters into an input field in the screen.

  By the way, some navigation devices for vehicles can be operated only while the vehicle is stopped for safety. For example, functions that require a relatively long operation time, such as route setting and current position correction, can often be operated only when the vehicle is stopped. In this type of navigation device, if the vehicle starts running while performing an operation that can only be performed while the vehicle is stopped, the operation cannot be performed midway, and a predetermined screen that is allowed to be displayed while traveling is forced Can be switched to.

  Therefore, when the vehicle starts running while performing an operation that can only be done while the vehicle is stopped, the screen is automatically saved, and when the vehicle stops next time, it automatically switches to the saved screen. A vehicle navigation device has been proposed (for example, Patent Document 1).

In addition, the user performs a predetermined operation by displaying a predetermined screen so as to execute a certain function, but suddenly performs an operation for displaying a different screen in order to execute another function. Sometimes. In this case, after executing the other function, it may be possible to display the previous screen again and perform a subsequent operation. In order to facilitate the subsequent operation, there is also known a navigation device that is provided with a save command that is executed based on a user instruction so that a screen in the middle of the operation can be saved (for example, Patent Document 2).
Japanese Patent No. 2673371 Japanese Patent No. 3770083

  As in Patent Document 1, the screen is automatically saved by automatically detecting the start of vehicle travel, and the device that automatically redisplays the saved screen when the vehicle stops next time is re-displayed. There is a problem that the screen may not necessarily be the screen that the user wants. For example, when the vehicle starts running, the screen where the destination is entered halfway is automatically saved, and when the next vehicle stops, the screen where the destination is entered halfway is redisplayed. An example is when the destination is changed. In this case, it is necessary to input the changed destination from the beginning. However, if the screen on which the destination is input halfway is displayed again, the operation becomes complicated. If the screen is automatically re-displayed as in this example, the operation may be complicated.

  Here, as in Patent Document 2, if a save command is executed based on a user instruction, an unnecessary screen is saved and an unnecessary screen is prevented from being displayed again to some extent. Can do. However, when the save command is executed based on the user instruction, the user may have to give an instruction to execute the save command when there is relatively little room, such as when the vehicle starts to travel. Therefore, there is a case where execution of the save command cannot be instructed, or due to this instruction, attention to other operations (such as driving operations) that must be performed substantially simultaneously with the execution of the save command may be reduced. Conceivable.

  The present invention has been made based on this situation, and an object of the present invention is to provide a navigation device that can further improve operability.

In order to achieve the object, the invention described in claim 1 is a navigation device including a display device and screen display processing means for displaying various screens on the display device, and is displayed on the display device. When the screen is changed to a predetermined previous screen saving screen by the screen display processing means, the screen display processing means includes a saving processing means for saving the screen displayed immediately before the previous screen saving screen in a storage device, and the screen display The processing means has storage screen display processing means for displaying the screen stored in the storage device on the display device based on a user's screen calling operation, and the storage processing means stores the screen to be stored. It is determined whether data that overlaps with data is stored in the storage device, and if data that overlaps is stored in the storage device, it is about to be stored And so as not to store the data of the surface in the storage device, and stores and accumulates a plurality of said screens in said storage device, further screen displayed on the display device a predetermined previous screen saving screen And the number of operations that the user needs to perform to switch from the predetermined reference screen to the screen displayed immediately before the previous screen save screen is greater than the predetermined number of times. The screen displayed immediately before the previous screen save screen is stored in the storage device, and the save screen display processing means is a user's screen calling operation among a plurality of screens stored in the storage device. One screen specified based on the above is displayed on the display device .

According to the present invention, since the screen displayed on the display device is automatically saved in the storage device by the save processing means, the user is not required to perform an operation when saving the screen. The screen stored in the storage device is not automatically displayed, but is displayed on the display device based on the user's screen calling operation. Therefore, when it is determined that it is not necessary to display the stored screen, an unnecessary screen is not displayed unless the user performs a screen calling operation, so that operability is improved.
Further, since a plurality of screens are stored and a screen to be displayed on the display device can be selected from the plurality of screens by a user operation, the operability is particularly improved. In addition, since all the screens stored in the storage device are the screens displayed immediately before the previous screen storage screen, screens that are unlikely to be selected by subsequent user operations are stored. Can also be suppressed. Therefore, it becomes easy for the user to select a desired screen in the screen calling operation.
Even if the screen can be switched to the previous screen saving screen, a screen that can be displayed a predetermined number of times or less from the reference screen is not saved. Since a screen that can be displayed a predetermined number of times or less from the reference screen can be easily displayed without performing a screen calling operation, there is a low possibility that the screen will be displayed again by the user performing a screen calling operation. According to the first aspect, the screen that is unlikely to be redisplayed is excluded from the screen that can be called by the screen calling operation. This makes it easier to display the screen.

Moreover, the screen stored in the storage device in the storage processing means is a screen immediately before the predetermined previous screen storage screen is displayed , and data that overlaps the data of the screen to be stored is stored in the storage device. Since it is limited to the case where there is not, the processing load for saving the screen can be reduced and the storage capacity can be saved.
The invention according to claim 2 for achieving the above object is a navigation device comprising a display device and screen display processing means for displaying various screens on the display device. When the screen to be displayed is set as a predetermined previous screen saving screen by the screen display processing means, the screen display processing means includes a saving processing means for saving the screen displayed immediately before the previous screen saving screen in a storage device, and The screen display processing unit includes a storage screen display processing unit that causes the display device to display a screen stored in the storage device based on a user's screen calling operation, and the storage processing unit includes the storage device. A plurality of the screens are accumulated and stored, but the screen displayed on the display device is a predetermined previous screen storage screen, and the screen is a predetermined reference screen. Based on the fact that the number of operations that the user needs to perform to switch to the screen displayed immediately before the previous screen save screen is greater than the predetermined number, the screen is displayed immediately before the previous screen save screen. A screen is stored in the storage device, and the storage screen display processing unit stores, on the display device, one screen specified based on a user's screen calling operation among a plurality of screens stored in the storage device. It is characterized by being displayed.
Also in the present invention, since the screen displayed on the display device is automatically saved in the storage device by the save processing means, the user is not required to perform an operation when saving the screen. The screen stored in the storage device is not automatically displayed, but is displayed on the display device based on the user's screen calling operation. Therefore, when it is determined that it is not necessary to display the stored screen, an unnecessary screen is not displayed unless the user performs a screen calling operation, so that operability is improved.
In addition, since a plurality of screens are stored and a screen to be displayed on the display device can be selected from the plurality of screens by a user operation, the operability is improved. In addition, since all the screens stored in the storage device are the screens displayed immediately before the previous screen storage screen, screens that are unlikely to be selected by subsequent user operations are stored. Can also be suppressed. Therefore, it becomes easy for the user to select a desired screen in the screen calling operation.
Further, even if the screen can be switched to the previous screen saving screen, a screen that can be displayed within a predetermined number of times from the reference screen is not saved. Since a screen that can be displayed a predetermined number of times or less from the reference screen can be easily displayed without performing a screen calling operation, there is a low possibility that the screen will be displayed again by the user performing a screen calling operation. In the present invention, the screens that are unlikely to be redisplayed are excluded from the screens that can be called by the screen calling operation, so that the user can easily display the desired screen by the screen calling operation. Become.

Examples of the previous screen storage screen include screens according to claims 3 and 4 . The third aspect of the present invention is the navigation apparatus according to the first or second aspect of the present invention, wherein the navigation apparatus includes a travel start detection unit that detects the start of vehicle travel, and the screen display processing unit is When the screen displayed on the display device when the vehicle travel start is detected is a preset travel prohibition screen, the screen displayed on the display device is switched to a predetermined travel start screen. And the storage processing unit stores the travel-inhibited display prohibition screen displayed on the display device immediately before the travel start screen as the previous screen storage screen in the storage device. And

Further, claim 4 is the navigation device according to any one of claims 1 to 3 , wherein the screen display processing means is operated when the shortcut button is operated. Regardless of the screen displayed on the display device, a shortcut screen corresponding to the shortcut button is displayed, and the save processing means uses the shortcut screen as the previous screen save screen. A screen displayed on the display device immediately before the shortcut screen is stored in the storage device.

  Many times when the normal operation is used to display the screen during running prohibition displayed on the display device immediately before the start of driving screen or the screen displayed immediately before the shortcut screen. (Or voice operation) is likely to be required. For this reason, it is significant that the data is stored in the storage device and can be displayed on the display device based on the user's screen calling operation.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a diagram illustrating a configuration of an in-vehicle navigation device 100 to which the present invention is applied. The in-vehicle navigation device 100 includes a position detector 101, a map data storage device 106, an operation switch group 107, a memory 109, a display 110, a DSRC communication device 111, a voice controller 112, a speaker 113, a voice recognition device 114, a microphone 115, a remote control sensor. 116, a remote control terminal (hereinafter referred to as a remote controller) 117, and an ECU 108 to which these devices are connected.

  The ECU 108 includes a well-known CPU, ROM, RAM, I / O and a bus line for connecting these components. In the ROM, a program to be executed by the ECU 108 is written, and a CPU or the like executes predetermined arithmetic processing according to this program.

  The position detector 101 is based on a geomagnetic sensor 102 for detecting the absolute azimuth of the vehicle, a gyroscope 103 for detecting the relative azimuth of the vehicle, a distance sensor 104 for detecting the travel distance of the vehicle, and radio waves from the satellite. And a GPS receiver 105 for a global positioning system (GPS) for measuring the position of the vehicle. These sensors 102, 103, 104, and 105 are all well known. Since these sensors 102, 103, 104, and 105 have errors of different properties, the plurality of sensors 102, 103, 104, and 105 are configured to be used while complementing each other. Depending on the accuracy, the position detector 101 may be constituted by a part of the above-described components, and a steering rotation sensor (not shown), a vehicle speed sensor for each rolling wheel, or the like may be used.

  The map data storage device 106 has a disk-type storage medium (not shown) such as a DVD or a hard disk. Digital map data is stored in the storage medium, and the map data storage device 106 outputs various data included in the digital map data stored in the storage medium to the ECU 108.

  The operation switch group 107 includes a touch switch integrated with the display 110 or a mechanical switch provided around the display 110. The remote controller 117 is provided with a plurality of operation switches (not shown), and an input operation similar to that of the operation switch group 107 can be performed by operating the operation switches. A signal representing an input operation input to the remote controller 117 is supplied to the ECU 108 via the remote controller sensor 116.

  The memory 109 corresponds to the storage device recited in the claims, and is a writable storage medium such as an EEPROM. Screen data is stored in the memory 109. The screen data is screen (image) data displayed on the display 110. When an input field (input field) is provided on the screen and characters are displayed in the input field, the code data of the character is also stored as variable data that is part of the screen data. In addition, when a device setting column for selectively setting the operation state of the in-vehicle device (for example, selectively setting ON / OFF) is provided on the screen, a variable indicating the selection state of the device setting column is also a variable. It is saved as data (ie part of the screen data). In addition, the memory 109 also stores a home position set by the user, text data, voice data, and the like.

  The display 110 corresponds to the display device of the claims, and is configured by, for example, a liquid crystal display or an organic EL display. Various screens are displayed on the display 110 based on user operations and depending on the vehicle running state. For example, during route guidance, a road map around the vehicle is displayed in a predetermined map display area. In the destination setting mode, a destination setting screen including an input field for inputting a destination is displayed. In addition, when the navigation device 100 has a music playback function, a playback list screen showing reproducible music is also displayed. This playlist screen has a more detailed classification that is displayed after a specific genre or the like is selected on a screen that displays major categories such as genre and artist, and a screen that displays major categories. There are two types of screens, and the playlist screen has a hierarchical structure. The music data is stored in the memory 109, for example, but a part of the storage area of the storage medium provided in the map data storage device 106 may be used as a storage area for music data.

  The communication device 111 is a device that performs wireless communication with a communication device outside the vehicle. For example, the communication device 111 performs communication with an external communication device of VICS (Vehicle Information and Communication System).

  The speaker 113 outputs various messages to the outside based on the audio output signal input from the audio controller 112. As messages output from the speaker 113, there are a message for route guidance, a message for explanation of screen operation, a message representing a voice recognition result, and the like.

  The microphone 115 inputs the voice uttered by the operator to the voice recognition device 114 as an electrical signal. The voice recognition device 114 collates the operator's input voice input from the microphone 115 with lexical data (comparison reference pattern) in a recognition dictionary (not shown) stored therein, and the one with the highest degree of matching is obtained. The recognition result is input to the voice controller 112.

  The voice controller 112 controls the voice recognition device 114 and controls talkback output (voice output) through the speaker 113 for an operator who has input voice. Moreover, the process which inputs the recognition result of the speech recognition apparatus 114 to ECU108 is also performed.

  The ECU 108 executes various processes based on signals input to the ECU 108. Examples of processing executed by the ECU 108 include position determination processing that sequentially determines the current position of the vehicle based on a signal from the position detector 101. The signal input to the ECU 108 includes a signal based on the user's input operation. Examples of the process executed by the ECU 108 based on the user's input operation include a menu display process, a map scale change process, and a destination setting. Processing, route search processing, route guidance processing, current position correction processing, music playback processing, and the like. Further, the ECU 108 performs a screen display process for displaying various screens on the display 110 in accordance with the various processes described above, and also stores a screen displayed on the display 110 in the memory 109 when a predetermined condition is satisfied. Execute. Further, a vehicle speed pulse signal is sequentially supplied to the ECU 108. Based on the vehicle speed pulse signal, the stop / running of the vehicle is detected.

  FIG. 2 is a block diagram showing functions related to the present invention among the functions executed by the ECU 108. As shown in FIG. 2, the ECU 108 includes a travel start detection unit 130, a screen display unit 140, and a storage processing unit 150. The input device 120 is a device by which a user can input an instruction to the ECU 108. The instruction input to the operation switch group 107, the remote controller 117, the microphone 115, the remote controller 117, or the microphone 115 in FIG. Means a remote control sensor 116, a voice recognition device 114, and a voice controller 112, which are devices for transmitting to the voice.

  The travel start detection means 130 detects the stop of the vehicle and the start of travel based on the vehicle speed pulse signal sequentially supplied to the ECU 108.

  The screen display processing unit 140 displays various screens on the display 110. For example, if a route guidance process is being executed, a predetermined range of map data centered on the current position of the vehicle is read from the map data storage device 106, and a road map centered on the current position is displayed in the map display area of the display 110. Is displayed. The current position is determined based on information from the position detector 101. When a signal is input from the input device 120, a screen determined based on the signal is displayed on the display 110.

  Further, the screen display processing unit 140 displays a predetermined screen when the screen displayed on the display 110 when the start of vehicle travel is detected by the travel start detection unit 130 is a preset display prohibition screen during travel. Switch to the driving start screen. For example, a destination setting screen, a current position correction screen, and the like are set in the above-mentioned traveling display prohibition screen. Set to

  In addition, when a signal indicating that the shortcut button has been pressed is input from the input device 120, the screen display processing unit 140 can execute the shortcut regardless of the screen displayed on the display 110 at that time. Display the shortcut screen corresponding to the button. The shortcut button may be provided as a mechanical switch on the operation switch group 107 or the remote controller 117, or may be a button displayed on the display 110. Further, there may be one or more shortcut buttons. As a shortcut button, for example, a “current location button” is provided. When a signal indicating that the “current location button” is pressed is input, a map centered on the current location is displayed on the display 110 regardless of which screen is displayed when the “current location button” is pressed.

  The screen display processing unit 140 includes a storage screen display processing unit 142. The saved screen display processing unit 142 causes the display 110 to display one screen specified based on the user's screen calling operation from a plurality of screens stored in the memory 109. Note that the processing for saving the screen in the memory 109 is executed by the save processing means 150. The storage processing unit 150 will be described later.

  The user's screen calling operation includes a plurality of operations on the input device 120. When the first operation is performed, an operation history screen as shown in FIG. 3 is displayed based on the screen data stored in the memory 109. 110. In the operation history screen of FIG. 3, two screen information fields 200 and 210 are provided near the center of the screen.

  In the screen information fields 200 and 210, ID numbers 201 and 211, storage dates 202 and 212, and screen hierarchy information 203 and 213 are displayed. The ID numbers 201 and 211 are unique numbers assigned to screens stored in the memory 109 according to a predetermined rule such as the order of storage date and time. Saved dates 202 and 212 indicate the date and time when the screen was saved. The screen hierarchy information 203 and 213 indicates the hierarchy of screens stored on the basis of the top screen (screen displayed at startup). Further, the screen hierarchy information 213 in the lower screen information field 210 also shows characters entered in a predetermined input field in the screen.

  On the left side of the screen information fields 200 and 210, among the plurality of screens stored in the memory 109, reduced screens 204 and 214 corresponding to the screen information fields 200 and 210 are displayed. A scroll bar 220 is displayed on the right side of the screen information fields 200 and 210. When the scroll bar 220 is operated by the user, the saved screen display processing unit 142 is different from those displayed so far. Screen information (ID number, save date and time, screen hierarchy information) and a reduced screen for the screen are displayed on the operation history screen.

  In addition, a rearrangement button 230 and a return button 240 are displayed on the operation history screen of FIG. When the rearrange button 230 is operated, the saved screen display processing unit 142 displays the screen information for a plurality of screens stored in the memory 109 by rearranging from ascending order to descending order, or vice versa. When the return button 240 is operated, the saved screen display processing unit 142 switches the screen to the screen displayed before the operation history screen.

  In a state where the operation history screen is displayed, when certain screen information or a reduced screen is selected by the user's selection operation, the save screen display processing unit 142 displays the selected screen on the display 110 and performs processing. finish. The selection operation is performed, for example, by touching the display 110.

  Returning to FIG. 2, the storage processing unit 150 stores the screen displayed on the display 110 in the memory 109 when a predetermined condition is satisfied. FIG. 4 is a flowchart showing the processing in the storage processing unit 150. The storage processing unit 150 will be described with reference to FIG.

  The process shown in FIG. 4 is started when a screen transition event occurs. The screen transition event means that the screen display processing unit 140 executes a process of switching the screen displayed on the display 110 to another screen based on a signal input to the ECU 108.

  In step S10, it is determined whether or not the event is a save event. The save event means a process that the screen display processing unit 140 needs to save the screen, and the process that needs to save the screen means a process of displaying a predetermined previous screen save screen on the display 110. . In the present embodiment, the above-described travel start screen and shortcut screen are set as the previous screen save screen.

  If it is not a save event, that is, if the screen displayed on the display 110 is not a previous screen save screen, the processing of FIG. On the other hand, if it is a save event, the process proceeds to step S20.

  In step S20, it is determined whether or not the operation cost is larger than a preset determination reference value n. Here, the operation cost means the number of operations that the user needs to operate the input device 120 in order to display the screen displayed immediately before the previous screen save screen from a predetermined reference screen. Here, the reference screen is the top screen. However, various settings such as a screen that is initially displayed when various processes are executed can be made. Further, since the reference screen is set in advance, the operation cost can also be set in advance. However, when an input field is provided on the screen and characters are input in the input field or a device setting field is provided, the operation cost is calculated each time. In all cases, the operation cost may be calculated each time.

  If the operation cost is equal to or less than the determination reference value n, a negative determination is made in step S20 and the process of FIG. On the other hand, when the operation cost is larger than the determination reference value n, the process proceeds to step S30.

  Both step S10 and step S20 are affirmative when the screen immediately before the previous screen save screen is displayed by a normal operation that does not use the screen call operation, and a relatively large number of operations are required. is there. Therefore, in order to enable redisplay by a screen call operation later, step S30 and subsequent steps are executed to save the screen that was displayed immediately before the previous screen save screen.

  In step S <b> 30, it is determined whether or not data overlapping with the data of the screen to be stored (that is, the screen displayed immediately before the previous screen storage screen) is stored in the memory 109.

  The determination of whether or not the data is duplicated is performed as follows. First, if the screen data you are trying to save does not have the above-mentioned variable data (characters entered in the screen input field, variables that indicate the selection status of the device setting field), the screen data to be saved It is determined whether or not data matching the above is stored in the memory 109, and if no completely matching data is stored, it is determined that there is no duplicate data.

  If variable data is included in the screen data to be stored, it is determined whether data other than variable data (hereinafter referred to as fixed data) is stored in the screen data. If this fixed data is not stored, it is determined that there is no duplicate data.

If the fixed data is stored, it is further determined whether the variable data matches or does not match. Specifically, this determination is performed by the following determinations (1) to (3).
(1) When the variable data of the screen data to be saved and the variable data of the saved screen data are not partially overlapped, or are only partially matched, it is determined that they do not match To do. For example, if the variable data to be stored is “Kariya City, Aichi Prefecture” and the stored variable data is “Nagoya City, Aichi Prefecture”, it is determined that they do not match because they are only partially matched. If the variable data does not match, it is determined that there is no duplicate data.
(2) When the variable data of the screen data to be saved completely includes the variable data of the saved screen data, that is, the variable data of the screen data to be saved is the saved screen. If the data variable data and the data not included in the saved screen data variable data are included, it is determined that they match. For example, when the variable data to be stored is “Showacho, Kariya City, Aichi Prefecture” and the stored variable data is “Kariya City, Aichi Prefecture”, it is determined that they match. If the variable data matches, it is determined that there is duplicate data.
(3) In the opposite case to (2) above, that is, when the variable data of the screen data to be stored is completely included in the variable data of the stored screen data, to decide. For example, when the variable data to be stored is “Kariya City, Aichi Prefecture” and the stored variable data is “Showa Town, Kariya City, Aichi Prefecture”, it is determined that they match.

  If the determination in step S30 is affirmative, the process proceeds to step S40 where the screen data is overwritten, the storage date / time (overwrite date / time) and screen hierarchy information are stored, and an ID number is assigned to the screen data. Thereafter, the process of FIG. 4 is terminated.

  On the other hand, if the determination in step S30 is negative, the process proceeds to step S50, and it is determined whether or not there is a free area in the storage area of the memory 109 for storing the screen data that can store the screen data to be stored. To do.

  When this step S50 is negative determination, it progresses to step S60. In step S60, the data with the lowest priority among the screen data stored in the memory 109 is deleted. The priority order can be set based on various rules, and can be determined using, for example, any one of storage date / time, operation cost, and usage rate. In the case of using the storage date and time, the newer the storage date and time, the higher the priority order. When the operation cost is used, the higher the operation cost, the higher the priority. When using the usage rate, the higher the usage rate, the higher the priority. After executing Step S60, the process returns to Step S50. As a result, even if the first step S50 is negative, step S50 to S60 is repeated, so that step S50 becomes affirmative.

  If step S50 is affirmative, the process proceeds to step S70. In step S70, the screen data to be stored is stored in the screen data storage area of the memory 109. Also in this step S70, similarly to step S40, the storage date and time and the screen hierarchy information are stored together with the screen data, and an ID number is assigned to the screen data. After executing step S70, the process of FIG.

  As described above, according to the present embodiment described above, when the screen displayed on the display 110 is the previous screen saving screen and the operation cost is larger than the determination reference value n, the display 110 is displayed immediately before the screen. The screen displayed on the screen is automatically saved in the memory 109, and the user is not required to perform an operation when saving the screen. The screen stored in the memory 109 is not automatically displayed, but is displayed on the display 110 by the user's screen calling operation. Therefore, when it is determined that it is not necessary to display the stored screen, an unnecessary screen is not displayed unless the user performs a screen calling operation, so that operability is improved.

  Further, since the screen stored in the memory 109 is a screen immediately before the previous screen storage screen is displayed and the operation cost is larger than the determination reference value, the processing load for storing the screen is increased. It is possible to reduce the storage capacity. Furthermore, by limiting the screens to be saved, it is possible to suppress the saving of screens that are unlikely to be selected by a subsequent user operation, and thereby the user selects a desired screen in the screen calling operation. It becomes easy.

  As mentioned above, although embodiment of this invention was described, this invention is not limited to the above-mentioned embodiment, The following embodiment is also contained in the technical scope of this invention, and also the summary other than the following is also included. Various modifications can be made without departing from the scope.

  For example, in the above-described embodiment, the screen data is deleted when there is no space in the storage area. However, an upper limit is set for the number of screen data, and the data with the lowest priority is deleted when the upper limit is exceeded. May be. Further, data may be deleted when a predetermined time elapses from the storage date / time or the nearest redisplay date / time.

It is a figure explaining the structure of the vehicle-mounted navigation apparatus 100 with which this invention was applied. It is a block diagram which shows the function regarding this invention among the functions which ECU108 of FIG. 1 performs. It is a figure which illustrates the operation history screen displayed on the display 110 by a user's screen calling operation. It is a figure which shows the process in the preservation | save process means 150 of FIG. 2 as a flowchart.

Explanation of symbols

100: vehicle-mounted navigation device, 109: memory (storage device), 110: display (display device), 120: input device, 130: travel start detection means, 140: screen display processing means, 142: storage screen display processing means, 150 : Save processing means, 200: screen information column, 201: ID number, 202: save date / time, 203: screen hierarchy information, 204: reduced screen, 210: screen information column, 211: ID number, 212: save date / time, 213: Screen hierarchy information, 214: Reduced screen, 220: Scroll bar, 230: Rearrange button, 240: Back button

Claims (4)

A navigation device comprising a display device and screen display processing means for displaying various screens on the display device,
Save processing means for saving the screen displayed immediately before the previous screen save screen to a storage device when the screen displayed on the display device is a predetermined previous screen save screen by the screen display processing means; Prepared, and
The screen display processing means includes a storage screen display processing means for causing the display device to display a screen stored in the storage device based on a user's screen calling operation.
The storage processing unit determines whether or not data that overlaps the screen data to be stored is stored in the storage device, and if the overlapping data is stored in the storage device, the storage processing unit Screen data is not stored in the storage device, and a plurality of the screens are accumulated and stored in the storage device, and the screen displayed on the display device is a predetermined previous screen storage screen. And the number of operations that the user needs to perform to switch from the predetermined reference screen to the screen displayed immediately before the previous screen save screen is greater than the predetermined number of times. On the basis of the screen stored immediately before the previous screen save screen is stored in the storage device,
The saved screen display processing means causes the display device to display one screen specified based on a user's screen calling operation among a plurality of screens stored in the storage device. . A navigation device comprising a display device and screen display processing means for displaying various screens on the display device,
Save processing means for saving the screen displayed immediately before the previous screen save screen to a storage device when the screen displayed on the display device is a predetermined previous screen save screen by the screen display processing means; Prepared, and
The screen display processing means includes a storage screen display processing means for causing the display device to display a screen stored in the storage device based on a user's screen calling operation.
The storage processing means is configured to store and store a plurality of the screens in the storage device, wherein the screen displayed on the display device is a predetermined previous screen storage screen, Also, based on the fact that the user needs to operate more than the predetermined number of times to switch from the predetermined reference screen to the screen displayed immediately before the previous screen storage screen, the previous screen storage screen The screen displayed immediately before is stored in the storage device,
The saved screen display processing means causes the display device to display one screen specified based on a user's screen calling operation among a plurality of screens stored in the storage device. . The navigation device according to claim 1 or 2 for use in a vehicle,
A travel start detection means for detecting the start of vehicle travel,
The screen display processing means displays on the display device when the screen displayed on the display device when the start of vehicle travel is detected by the travel start detection device is a preset travel-prohibited display screen. The screen is switched to the predetermined driving start screen,
The storage processing means stores the traveling display prohibition screen displayed on the display device immediately before the travel start screen as the previous screen storage screen as the previous screen storage screen in the storage device. Navigation device. The navigation device according to any one of claims 1 to 3 ,
When the shortcut button is operated, the screen display processing means displays a shortcut screen corresponding to the shortcut button regardless of the screen displayed on the display device when the shortcut button is operated. And
The save processing means saves the screen displayed on the display device immediately before the shortcut screen as the previous screen save screen as the previous screen save screen in the storage device.

Images