JP2009032147A - Navigation apparatus, and program for navigation apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a navigation apparatus that implements user interactivity and entertainment by using the function of receiving a handwritten input of characters. <P>SOLUTION: The navigation apparatus identifies a user's psychological or physical state and drunkenness by the handwriting, writing pressure and writing speed of characters handwritten by the user (210) and changes various processing according to the identified state or take measures against drinking (220). <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a navigation device and a program used for the navigation device.

  Navigation devices have reached the maturity stage after the enlightenment period and the popularization period, and are now generally available to anyone who is not limited by age or taste.

  Such a vehicle navigation apparatus is currently responsible for various functions such as music, video, communication, vehicle information display, and cooperation with other devices in addition to the basic function of road guidance.

  On the other hand, in recent years, in various fields of products, in addition to functionality and performance, bidirectionality between users and devices has been demanded. As described above, since future navigation devices are products that anyone can use without being limited to age and preference, it will be required to provide not only road guidance but also interactive and entertainment properties.

By the way, some navigation apparatuses can accept handwritten input of characters by passengers (see, for example, Patent Documents 1 to 4).
JP 2004-325322 A Japanese Patent Laid-Open No. 2003-166843 JP 2005-62044 A JP 2002-195849 A

  In view of such a background, an object of the present invention is to realize interactivity and entertainment between users by using a function of accepting handwritten input of characters in a navigation device.

  In order to achieve the above object, the present invention is characterized in that a navigation device compares a handwriting input by a user with a predetermined handwriting input, based on a result of the comparison, and the navigation device or other It is to change the contents of the operation of the equipment.

  Here, the handwriting input refers to input realized by the user moving his / her hand so as to represent the shape of the character, such as character input using a pen or direct character input with a finger. In addition, the stroke is not the meaning content of the input character itself but an input form of a line representing a character input at the time of handwriting input, such as handwriting, writing pressure, and writing speed.

  The handwriting refers to the locus of a line drawn by the user at the time of handwriting input, the writing pressure refers to the pressure applied by the user to the handwriting input device at the time of handwriting input, and the writing speed refers to the line drawn by the user at the time of handwriting input. Say the speed of drawing.

  In addition, the character here is a concept including kanji, hiragana, katakana, numbers, alphabets, symbols, numbers, and the like.

  In this way, the navigation device changes various operation contents based on the handwriting of the characters handwritten by the user, so that it is interactive with the user and entertaining for the user. Can be realized.

  The navigation device may be mounted on a vehicle. In this case, the navigation device determines whether or not the comparison character stroke input by the user in advance by handwriting input is significantly different from the character stroke by the user handwriting input. The processing of measures against the user's drinking may be performed.

  By doing in this way, it is determined whether or not the user is drunk depending on whether or not the user's stroke at the time of character input is significantly different from the stroke at the normal time, and a countermeasure process corresponding to the determination is performed Can do. Therefore, the risk of drunk driving is reduced.

  In addition, the navigation device identifies the psychological or physical state of the user by comparing the handwriting input by the user with a predetermined determination criterion, and notifies the user of the identified state. You may come to perform the process for doing.

  In this way, by notifying the user of the psychological or physical state of the user specified from the strokes of the input characters, the user can recognize his / her state that he / she did not even notice. . Therefore, the safety of the user's movement (for example, the safety level of driving the vehicle) is increased.

  In addition, the navigation device identifies the psychological or physical state of the user by comparing the handwriting input by the user with a predetermined criterion, and according to the identified state, The content of the operation of the navigation device or other device that directly affects the user may be changed.

  Thereby, the psychological or physical state of the user can be reflected in the contents of the operation of the navigation device or other devices.

  The features of the present invention can also be understood as a program used for the navigation device according to the present invention.

  Hereinafter, an embodiment of the present invention will be described. FIG. 1 shows a hardware configuration of a vehicle navigation apparatus 1 according to this embodiment.

  FIG. 1 shows a hardware configuration of a vehicle navigation apparatus 1 according to this embodiment. The vehicle navigation device 1 includes a position detector 11, an image display device 12, an operation unit 13, a speaker 14, a map data acquisition unit 16, and a control circuit 17.

  The position detector 11 includes a well-known sensor (not shown) such as a geomagnetic sensor, a gyroscope, a vehicle speed sensor, and a GPS receiver. The current position and direction of the vehicle based on the characteristics of each of these sensors. , And information for specifying the speed is output to the control circuit 17.

  The image display device 12 displays a video based on the video signal output from the control circuit 17 to a user (corresponding to a driver in the present embodiment). Examples of the display image include a map centering on the current location.

  The operation unit 13 is a device that receives an input operation by a user. Specifically, the operation unit 13 includes a mechanical switch 13a, a touch panel 13b, and a handwriting input panel 13c.

  The touch panel 13b is provided so as to overlap the display surface of the image display device 12, and the user performs a touch operation on the touch panel 13b using his / her own finger or stick, so that the touched position and the pressure of the touch are displayed. It is a device that detects and outputs the detected information to the control circuit 17.

  Similarly to the touch panel 13b, the handwriting input panel 13c detects the touched position and the pressure of the touch when the user performs a touch operation on the handwriting input panel 13c using his / her finger or stick. This is a device that outputs the detected information to the control circuit 17.

  Thus, the touch panel 13b and the handwriting input panel 13c can accept a user's handwriting input. For example, when the user draws a character on either the touch panel 13b or the handwriting input panel 13c, the position information of the touch position on the locus of the drawn character and the pressure information of the touch are touched. It is output to the control circuit 17 at the timing.

  The map data acquisition unit 16 includes a writable nonvolatile storage medium such as an HDD and a device that reads and writes data from and to the storage medium. The storage medium stores a program executed by the control circuit 17, map data for route guidance, music data, and the like.

  The map data has road data and facility data. The road data includes link position information, type information, node position information, type information, information on connection relations between nodes and links, and the like. The facility data has a plurality of records for each facility, and each record has data indicating name information, location information, facility type information, and the like of the target facility.

  A control circuit (corresponding to a computer) 17 is a microcomputer having a CPU, RAM, ROM, I / O and the like. The CPU executes a program for the operation of the vehicle navigation device 1 read from the ROM or the map data acquisition unit 16, reads information from the RAM, the ROM, and the map data acquisition unit 16 when executing the program. And (if possible) write information to the storage medium of the map data acquisition unit 16 to exchange signals with the position detector 11, the image display device 12, the operation unit 13, and the speaker 14, and It controls other equipment in the vehicle, such as a vehicle interior temperature control device (hereinafter referred to as an air conditioner) and an engine ECU.

  Specific processing performed by the control circuit 17 executing the program includes current position specifying processing, guidance route calculation processing, route guidance processing, music reproduction processing, and the like.

  The current position specifying process is a process for specifying the current position and direction of the vehicle based on a signal from the position detector 11 using a known technique such as map matching. The guidance route calculation process is a process of receiving an input of a destination by the user from the operation unit 13 and calculating an optimum guidance route from the current position to the destination.

  In the route guidance process, map data is read from the map data acquisition unit 16, and an image in which the calculated guide route, destination, waypoint, current position, etc. are overlaid on the map indicated by the map data is displayed on the image display device 12. This is a process of outputting a guidance voice signal for instructing a right turn, a left turn or the like to the speaker 14 when necessary, such as when the host vehicle arrives before the guidance intersection.

  The music reproduction process is a process of reading one of a plurality of music and sound data recorded in the map data acquisition unit 16 and outputting the sound of the music to the speaker 14.

  When the control circuit 17 performs a process based on the user input, and the input is a handwritten input to the touch panel 13b or the handwriting input panel 13c, the control circuit 17 executes a program 100 as shown in the flowchart of FIG. By executing, the processing is realized.

  That is, first, in step 110, based on the locus of handwriting input accepted by the touch panel 13b or the handwriting input panel 13c, the character or the like indicated by the handwriting input is recognized.

  Subsequently, in step 120, processing according to the meaning content of the recognized character or the like is performed. For example, when there is a handwriting input on the touch panel 13b or the handwriting input panel 13c when receiving the destination input in the above guidance route calculation process, the point corresponding to the character recognized in step 110 is determined as the destination. Candidate for As a point corresponding to the recognized character, for example, when the recognized character is “e” in hiragana, a facility having a name starting with “e” may be used as a destination candidate.

  Further, the control circuit 17 executes a stroke handling process and a setting process in addition to the processes described above. FIG. 3 shows a flowchart of the program 200 executed by the control circuit 17 for the stroke handling process, and FIG. 4 shows a flowchart of the program 300 executed by the control circuit 17 for the setting process.

  The control circuit 17 performs a stroke handling process when handwriting input is performed on any one of the touch panel 13b and the writing input panel 13c (hereinafter simply referred to as a panel). In this stroke handling process, as shown in FIG. 3, the stroke determination is first performed in step 210, and then in step 220, a process corresponding to the result of the stroke determination is executed.

  In the stroke determination of step 210, the control circuit 17 specifies the psychological or physical state of the user by comparing the stroke of the handwritten character received by the panel with a predetermined determination criterion. Here, handwriting refers to an input form of lines representing characters input during handwriting input, such as handwriting, writing pressure, writing speed, and the like, not the meaning content of characters input by handwriting. Handwriting refers to the locus of a line drawn by the user during handwriting input, writing pressure refers to the pressure that the user applies to the panel during handwriting input, and writing speed refers to the speed at which the user draws a line during handwriting input. Say.

  The control circuit 17 specifies the handwriting of the character input by handwriting based on the position information continuously received from the panel. Moreover, the writing pressure of the character input by handwriting is specified based on the pressure information continuously received from the panel. Moreover, the writing speed of the character input by handwriting is specified based on the position information continuously received from the panel and the timing at which the position information is received.

  Further, in the stroke determination in step 210, the control circuit 17 determines whether or not the specified stroke is greatly different from the comparison stroke (hereinafter referred to as a reference stroke) (that is, greatly different from a predetermined deviation degree). Whether or not).

  In the process of step 220 according to the determination result of step 210, the control circuit 17 notifies the user of the specific result by the stroke determination by an image or a sound using the image display device 12 or the speaker 14. Further, in the process of step 220, the control circuit 17 further changes the contents of the operation directly affecting the user of the vehicle navigation device 1 or other devices in the vehicle based on the identification result of step 210.

  In step 220, if it is determined in step 210 that the stroke of the character input just before handwriting is significantly different from the reference stroke, a countermeasure process against the user drinking is performed.

  As a process of countermeasures against a user drinking, (1) a process of displaying a notification instructing to stop driving with an image or sound using the image display device 12 or the speaker 14, and (2) an engine ECU Control to prevent the engine from starting. (3) Forced reproduction of voice data of the drunk driving accident survivor's family previously stored in the map data acquisition unit 16 and output from the speaker 14 Processing, (4) processing for displaying on the image display device 12 a photographic image of a drunk driving accident site recorded in advance in the map data acquisition unit 16, (5) processing for stopping the function of temperature control by the air conditioner, (5) image There are a process for stopping the function of screen display by the display device 12, a process for stopping the function of the route guidance process, and the like.

  Here, the psychological or physical state of the user specified in step 210 based on the input stroke is illustrated, and the criteria for the input stroke to specify each of the psychological or physical state is shown. Show. First, psychological or physical states to be identified include (1) tension, (2) concentration, (3) fatigue, (4) boldness, (5) impatience, (6) personality, etc. is there.

  Regarding the degree of tension, the control circuit 17 determines that the degree of tension is higher as the representative value (for example, average value, maximum value, median value, etc.) of the pen pressure of the input character is higher. More specifically, if the representative value of the pen pressure of the input character is higher than the representative value of the pen stroke pressure, it is determined that the user is more nervous than usual. Determined to be more relaxed than usual.

  As for the degree of concentration, the control circuit 17 calculates the degree of coincidence between the handwriting of the input character and the handwriting of the reference handwriting using a known technique such as the method of least squares, and the degree of coincidence calculated is high. It is determined that the user's concentration is high. Specifically, when the calculated degree of coincidence is higher than a predetermined reference value for concentration, it is determined that the user's concentration is higher than normal.

  For the fatigue level, the control circuit 17 calculates the tremor level from the handwriting of the input character, and determines that the higher the calculated tremor level, the higher the user fatigue level. Specifically, if the calculated tremor level is higher than a predetermined tremor standard value, it is determined that the user's fatigue level is higher than normal.

  Here, the tremor is specified as follows. In other words, the position shift of the handwriting of the input character with respect to the handwriting of the standard handwriting is subjected to frequency analysis by Fourier analysis or the like, and as a result of the analysis, representative values of the intensity in the frequency band corresponding to human tremor (average value, maximum value) , Median, etc.) is the tremor level. Note that the frequency band corresponding to human tremor is determined in advance by experiments or the like.

  Regarding the boldness, the control circuit 17 determines the size of the “splash” portion of the character with respect to the entire character from the handwriting of the input character, and determines that the greater the boldness, the higher the boldness. Specifically, if the size of the “splash” is higher than the size of the splash in the handwriting of the reference stroke, the user is determined to be bolder than normal, otherwise the user is determined to be bolder than normal. Judged as delicate.

  Regarding the degree of impatience, the control circuit 17 determines that the degree of impatience is higher as the representative value (for example, average value, maximum value, median value, etc.) of the writing speed of the input character is higher. More specifically, if the representative value of the writing speed of the input character is higher than the representative value of the writing speed of the reference stroke, it is determined that the user is more impatient than normal. It is determined that there is more room than usual.

  Regarding the personality, the control circuit 17 determines the personality corresponding to the handwriting by comparing the inputted handwriting with a predetermined personality-handwriting correspondence.

  Next, the relationship between the specified psychological or physical state and the processing of the control circuit 17 according to the specified state will be described.

(1) The music reproduced by the process music reproduction process corresponding to the case where it is determined that the degree of tension is higher than normal is switched to music that makes it easier for people to relax. By doing in this way, a user's tension can be eased. When the music data in the map data acquisition unit 16 includes information about which music is easy to relax, music that is easy to relax may be extracted based on the information.

  In addition, the image display device 12 displays an image showing a pot with an effect of relieving tension. In this way, the user can be notified that the user is nervous, and the user can be taught how to relieve the tension.

  Further, the font of the character displayed on the image display device 12 is switched from a normal font (for example, Gothic font, Mincho font) to a more rounded font (for example, round character font). By doing in this way, a user can be provided with a sense of security, and the user's tension can be eased.

  If it is determined that the degree of tension is higher than normal, the voice to be output to the speaker 14 is changed from a normal voice (for example, a voice in a standard language) to a baby word (for example, “30 m ahead on the right”). ). Such a humorous presentation can relieve the user's tension.

  In addition, healing facilities (for example, massage shops, hot springs, highway parking areas, service areas, etc.) are automatically set as destinations for guidance route calculation processing, and route guidance processing is performed on the healing facilities. You may come to do. By doing in this way, the user is automatically guided to the healing facility, and by taking a rest there, the tension can be relieved.

(2) If the music is being played by the process music playback process corresponding to the case where it is determined that the degree of concentration is lower than normal, the playback is stopped. In this way, the user's ability to concentrate on driving can be enhanced.

  Further, using the image display device 12 or the speaker 14, a message for concentrating is transmitted to the user by video or audio. By doing so, it is possible to make the user aware that the user's concentration is decreasing.

  In addition, the air conditioner is controlled so that the temperature in the passenger compartment is lower than the current value. Further, the air blowing direction is controlled to blow cool air lower than the current temperature onto the head portion of the driver seat. By doing in this way, a user's sense can be sharpened and a user's concentration to driving can be improved.

  Further, the display brightness of the image display device 12 is set higher than usual. By doing in this way, the user can easily confirm the contents of the screen display despite the decrease in concentration.

  In addition, the font size of characters displayed on the image display device 12 is set larger than usual. By doing in this way, the user can easily confirm the contents of the screen display despite the decrease in concentration.

  Further, the display of the image is simplified by reducing the number of display colors of the image to be displayed on the image display device 12 than usual. By doing in this way, the user can easily confirm the contents of the screen display despite the decrease in concentration.

  Further, parking areas and service areas of highways may be frequently set as destinations for the guidance route calculation process, and the route guidance process may be performed for those facilities. By doing in this way, a user is automatically guided to those facilities, and a concentration degree can be raised by taking a rest there.

(3) A song including a sound including a 1 / f frequency that has been proven to have a healing effect in terms of processing science corresponding to a case where the degree of fatigue is determined to be higher than normal (for example, a song that plays only a river murmur) ). In this way, user fatigue can be reduced.

  In addition, a message indicating that the user is tired is notified to the user by video or audio. In this way, it is possible to make the user aware that the user is tired.

  Further, the display brightness of the image display device 12 is set higher than usual. In this way, the user can easily confirm the contents of the screen display despite fatigue.

  In addition, the font size of characters displayed on the image display device 12 is set larger than usual. In this way, the user can easily confirm the contents of the screen display despite fatigue.

  Further, the display of the image is simplified by reducing the number of display colors of the image to be displayed on the image display device 12 than usual. In this way, the user can easily confirm the contents of the screen display despite fatigue.

  Further, parking areas and service areas of highways may be frequently set as destinations for the guidance route calculation process, and the route guidance process may be performed for those facilities. In this way, the user is automatically guided to those facilities, and can take a rest to heal fatigue.

(4) A message that prompts the user to pay close attention to the processing operation corresponding to the case where the boldness is determined to be higher than normal is notified to the user by video or audio. By doing so, it is possible to prevent the user from driving excessively boldly.

(5) Processing corresponding to a case where it is determined that the degree of impatience is higher than normal. A song including a sound including a 1 / f frequency that has been scientifically proven to have a healing effect (for example, a song that plays only a river murmur) ). By doing in this way, a user's impatience can be reduced.

  In addition, when the user is impatient and has little room, the user is notified of a message that an accident is likely to occur by video or audio. By doing in this way, the user knows that he / she is impatient and tries to drive safely.

  In addition, the font size of characters displayed on the image display device 12 is set larger than usual. By doing in this way, the effort which a user spends in order to make the content of a display screen confirm can be reduced.

  Further, the display of the image is simplified by reducing the number of display colors of the image to be displayed on the image display device 12 than usual. By doing in this way, the effort which a user spends in order to make the content of a display screen confirm can be reduced.

  Further, in the route guidance process, provision of additional information (for example, information on surrounding facilities) other than route guidance to the destination among the information normally provided is prohibited. By doing in this way, the attention which a user spends with respect to route guidance can be reduced.

  In order for the user to set the data necessary for the stroke handling process as described above, the control circuit 17 starts the setting process program 300 shown in FIG. 4 in response to the activation operation on the operation unit 13 by the user. To do. The user performs the above-described starting operation when he / she is in good condition, that is, when he / she is in good physical condition and is psychologically calm and enriched.

  In this setting process, the control circuit 17 first accepts handwriting input of the above-described comparison characters in step 310. The handwriting of the comparison character input in this way is recorded in the map data acquisition unit 16. In this way, by comparing the user's handwriting during favorable times with the user's handwriting during driving as described above, it is possible to perform a handwriting handling process more suitable for each individual user.

  In step 320, input of data necessary for the stroke handling process is accepted. The data received here includes, for example, the above-mentioned concentration standard data, tremor standard data, personality-handwriting correspondence data, data for specifying music that is easy to relax, and handwriting processing There is data indicating the relationship between the identified personality and the processing corresponding to the personality in step 220.

  As described above, when the user voluntarily sets the correspondence relationship between the personality and the process, the process more suitable for each user can be realized.

  As described above, the vehicular navigation device 1 matches the handwriting input by the user with the handwriting input according to a predetermined determination criterion, and based on the result of the comparison, the navigation device or other device is notified to the user. The contents of the operation (sound display, image display, vehicle interior temperature control, destination setting, etc.) that directly influence are changed.

  In this way, the vehicle navigation apparatus 1 changes various operation contents based on the handwriting of the character input by the user by handwriting, and the change directly affects the user. Between the two and entertainment for the user can be realized.

  Further, the vehicle navigation device 1 determines whether or not the comparison character stroke input by the user in advance by handwriting input is significantly different from the character stroke by the user handwriting input. If there is, the countermeasure processing for the fact that the user is drinking is performed.

  By doing in this way, it is determined whether or not the user is drunk depending on whether or not the user's stroke at the time of character input is significantly different from the stroke at the normal time, and a countermeasure process corresponding to the determination is performed Can do. Therefore, the risk of drunk driving is reduced.

  Moreover, the vehicle navigation apparatus 1 specifies the psychological or physical state of the user by comparing the handwriting input by the user with the handwriting input according to a predetermined criterion, and the specified state is Processing for notifying the user is performed.

  In this way, by notifying the user of the psychological or physical state of the user specified from the strokes of the input characters, the user can recognize his / her state that he / she did not even notice. . Therefore, the safety of the user's movement (for example, the safety level of driving the vehicle) is increased.

  In addition, the vehicle navigation device 1 identifies the psychological or physical state of the user by comparing the handwriting input by the user with the handwriting input according to a predetermined criterion, and according to the identified state. Thus, the content of the operation of the navigation device or other device that directly affects the user is changed.

  As a result, the psychological or physical state of the user can be reflected in the content of the operation of the navigation device or other device that directly affects the user.

  A biosensor is widely known as an apparatus for determining a user's state. Compared to this, specifying the user's state based on the user's handwritten input takes time and effort from the standpoint of efficiency alone. However, from the viewpoint of sensibility performance, which is the performance appealing to the user's sensibility, it can be said that the process of taking the stage of allowing the user to input by handwriting is an indispensable performance.

  In other words, rather than the physical sensor judging the physical condition, the need for “being persuasive just because the physical condition is judged from the letters that I wrote” is expected.

  As described above, the biosensor is the same as the present embodiment in that it has the purpose of “specifying psychological or physical state”, but in this embodiment, the process up to the target process is emphasized. Is different.

Furthermore, the user participation type embodiment has higher entertainment characteristics than the biometric sensor.
In addition, from the viewpoint of function / performance, the present invention can determine the concentration that is difficult to determine with a biological sensor.

  In the above embodiment, the vehicle navigation device 1 corresponds to an example of a navigation device, and each of the touch panel 13b and the handwriting input panel 13c corresponds to an example of a handwriting input device. The control circuit 17 functions as an example of a stroke determination unit by executing step 210 of the program 200, and functions as an example of an operation content control unit by executing step 220.

(Other embodiments)
As mentioned above, although embodiment of this invention was described, the scope of the present invention is not limited only to the said embodiment, The various form which can implement | achieve the function of each invention specific matter of this invention is included. It is.

  For example, the control circuit 17 may use the registered reference stroke information of the user's character as a comparison reference for simple personal authentication. That is, when handwritten input is accepted, if the user's character and the information on the stroke of the registered user's character as a comparison are greatly different, it is determined that the legitimate user is not using, The function of the vehicle navigation device 1 may be stopped.

  Moreover, the control circuit 17 may be configured to record the reference stroke information of handwritten input characters by the user in the map data acquisition unit 16 for each of the plurality of users. In that case, when the handwriting input is received during driving of the vehicle or the like, the control circuit 17 compares the handwriting by the input with the handwriting with the highest degree of matching compared to the handwriting input of each user, It may be specified as the current user, and various settings for the specified user may be read out and reflected in various processes.

  Further, the data input in steps 310 and 320 of the program 300 is not limited to the map data acquisition unit 16, and can continue to hold data even when the main power supply of the other vehicle navigation apparatus 1 is stopped. It may be stored in a storage medium that can be used (for example, flash memory, EEPROM, backup RAM). In that case, the storage medium of the map data acquisition unit 16 does not have to be a writable storage medium such as an HDD, and may be a non-writable storage medium such as a DVD or a CD-ROM.

  In the above embodiment, each function realized by the control circuit 17 executing the program is realized by using hardware having those functions (for example, an FPGA capable of programming the circuit configuration). You may come to do.

  Moreover, in the said embodiment, although a navigation apparatus is a vehicle-mounted type, a navigation apparatus may be mounted in a ship and an airplane, and may be a thing of the type which a person can carry. . For example, a mobile phone having a navigation device function also corresponds to the navigation device of the present invention.

It is a hardware block diagram of the vehicle navigation apparatus 1 which concerns on embodiment of this invention. 3 is a flowchart of a program 100 executed by a control circuit 17. It is a flowchart of the program 200 which the control circuit 17 performs. 4 is a flowchart of a program 300 executed by the control circuit 17.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Vehicle navigation apparatus, 11 ... Position detector, 12 ... Image display apparatus,
13 ... operation unit, 13a ... mechanical switch, 13b ... touch panel,
13c ... Panel for handwriting input, 14 ... Speaker, 16 ... Map data acquisition unit,
17: control circuit, 100, 200, 300 ... program.

Claims (5)

A handwriting input device that accepts user handwriting input;
A handwriting determination unit that compares the handwriting of the character received by the handwriting input device with a predetermined criterion;
A navigation device comprising: an operation content control unit that changes the operation content of the navigation device or another device based on a result of collation by the stroke determination unit. The navigation device is mounted on a vehicle,
The handwriting determination means determines whether the handwriting input by the user in advance by handwriting input is significantly different from the character handwriting input by the user,
The operation content control means is that the user is drinking based on the fact that the determination means determines that the comparison character stroke is significantly different from the handwriting input by the user. The navigation apparatus according to claim 1, wherein a countermeasure process is performed. The handwriting determination means specifies the psychological or physical state of the user by comparing the handwriting of the character by handwriting input of the user against a predetermined determination criterion,
The navigation device according to claim 1, wherein the operation content control unit performs processing for notifying the user of the state specified by the stroke determination unit. The handwriting determination means specifies the psychological or physical state of the user by comparing the handwriting of the character by handwriting input of the user against a predetermined determination criterion,
4. The operation content control unit according to claim 1, wherein the operation content of the navigation device or another device is changed according to the state specified by the stroke determination unit. 5. The navigation device described. A program used for a navigation device,
A stroke determination unit that matches a stroke of a character by a user's handwriting input with a predetermined determination criterion, and an operation that changes the content of the operation of the navigation device or other device based on the result of the comparison with the stroke determination unit A program that causes a computer to function as content control means.