JP2006148541A - Navigation device and program - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To set the brightness of image display and the volume of a sound output in a navigation device on the basis of occupant characteristics and a physical environment in a car compartment. <P>SOLUTION: Personal characteristic data of occupant eyesight, sex and age recorded in a storage medium is acquired (step 120), brightness data in the car cabin is acquired (step 130), sound noise amount data in the car cabin is acquired (step 140), setting is performed so as to display an image with resultant brightness obtained by multiplying reference luminance that becomes higher as lightness shown by the acquired brightness data becomes higher by a coefficient that becomes larger as visual capability shown by the acquired personal characteristic data tends to deteriorate, and setting is performed so as to output sound with resultant volume obtained by multiplying reference volume that becomes larger as a sound noise amount shown by the acquired sound noise amount data is larger by a coefficient that becomes larger as auditory capability shown by the acquired personal characteristic data tends to deteriorate (step 150). <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a navigation device and a program for setting the brightness of a display image or the like or an output volume.

Conventionally, characteristics data such as the sight, hearing, age, and gender of an occupant is read from an IC card or a magnetic storage medium, etc., and the occupant's visual and auditory abilities are identified based on the read characteristic data. The image display setting of the contrast, brightness, and color temperature corresponding to the navigation device is performed on the navigation device, and the sound output setting of the sound volume corresponding to the hearing ability is performed on the navigation device, so that the image display of the navigation device can be performed. A technique for improving the visibility and the ease of listening to audio output has been disclosed (see Patent Document 1).
JP 2004-110546 A

  However, the visibility of images and the ease of listening to audio are affected not only by the characteristics of the passengers but also by the physical environment in the passenger compartment.

  In view of the above-mentioned points, the present invention provides a first feature that allows an easy-to-see index such as brightness, contrast, or color temperature of image display of a navigation device to be set based on the characteristics of the occupant and the physical environment in the passenger compartment. The purpose. A second object of the present invention is to enable setting of the sound output volume of the navigation device based on the characteristics of the occupant and the physical environment in the passenger compartment.

  In order to achieve the above object, the invention according to claim 1 is characterized in that personal characteristic acquisition means for acquiring personal characteristic data of at least one of the sight, gender, and age of an occupant recorded in a storage medium, The personal characteristics acquired by the personal characteristics acquisition means to the brightness acquisition means for acquiring brightness data, and the standard visibility index that increases as the brightness indicated by the brightness data acquired by the brightness acquisition means increases. An image display setting unit configured to display an image with an easy-to-see index obtained by multiplying a coefficient that increases as the visual ability indicated by data tends to be inferior.

  Note that the visibility index refers to video characteristics such as brightness, contrast, color temperature, or a change value from a default value such as brightness, such that the displayed image becomes clearer as the value increases. In addition, the visual ability indicated by the personal characteristic data tends to be inferior, such as when the eyesight is low or when the age is high.

  As a result, the navigation device obtains a result of multiplying the standard visibility index, which increases as the lightness in the passenger compartment increases, by a coefficient that increases as the passenger's visual ability tends to deteriorate. It can be set so that the image display is performed by the ease index.

  According to a second aspect of the present invention, there is provided personal characteristic acquisition means for acquiring at least one personal characteristic data among occupant's hearing ability, gender, and age recorded in a storage medium, and acoustic noise amount data in the passenger compartment. The personal characteristic data acquired by the personal characteristic acquisition unit is increased to a reference volume that increases as the amount of acoustic noise indicated by the acoustic noise amount data acquired by the acoustic noise amount acquisition unit acquired by the acoustic noise amount acquisition unit acquired by the acoustic noise amount acquisition unit increases. And a sound volume setting unit configured to perform sound output at a sound volume based on a result obtained by multiplying a coefficient that becomes larger as the auditory ability to be shown tends to be inferior.

  Note that cases where the hearing ability indicated by the personal characteristic data tends to be inferior include cases where the hearing ability is abnormal or the age is high. The acoustic noise amount refers to the volume in the vehicle interior other than the sound output from the navigation device to a speaker or the like.

  As a result, the navigation device has a volume obtained as a result of multiplying a reference volume that increases as the amount of acoustic noise in the passenger compartment increases by a coefficient that increases as the passenger's hearing ability tends to deteriorate. It can be set to perform audio output.

  According to a third aspect of the present invention, in the navigation device according to the second aspect, the personal characteristic acquisition means acquires hearing data for each of a plurality of frequency bands, and the volume setting means The higher the acoustic noise amount indicated by the acoustic noise amount data acquired by the noise amount acquisition means, the higher the reference volume, the larger the lower the hearing ability indicated by the hearing data of each frequency band acquired by the personal characteristic acquisition means. It is set so that sound output for the frequency band is performed at a volume based on a result of multiplying by the coefficient.

  In this way, the navigation apparatus can perform flexible audio output setting corresponding to a case where hearing ability is different for each target frequency band even for the same person.

  According to a fourth aspect of the present invention, in the navigation apparatus according to the second aspect, the acoustic noise amount acquisition unit acquires acoustic noise amount data for each of a plurality of frequency bands, and the volume setting unit The personal characteristic data acquired by the personal characteristic acquisition unit at a reference volume for the frequency band that increases as the acoustic noise amount indicated by the acoustic noise amount data of a certain frequency band acquired by the acoustic noise amount acquisition unit increases. Is set such that sound output for the frequency band is performed at a volume based on a result of multiplication by a coefficient that increases as the auditory ability tends to be inferior.

  In this way, the navigation device can perform flexible audio output setting corresponding to the case where the amount of acoustic noise changes for each target frequency band even at the same time in the same vehicle interior. Can do.

  Further, the invention according to claim 5 is the navigation device according to claim 2, wherein the personal characteristic acquisition unit acquires hearing data for each of a plurality of frequency bands, and the acoustic noise amount acquisition unit includes: Acquire acoustic noise amount data for each of a plurality of frequency bands, and the volume setting means increases as the acoustic noise amount indicated by the acoustic noise amount data of a certain frequency band acquired by the acoustic noise amount acquisition means increases. The sound for the frequency band is a volume based on the result of multiplying the reference volume for the frequency band by a coefficient that becomes larger as the hearing ability indicated by the hearing data of the frequency band acquired by the personal characteristic acquisition unit is lower. The output is set to be performed.

  In this way, the navigation device can generate acoustic noise for each target frequency band even when the same person has different hearing for each target frequency band, and even at the same time in the same cabin. It is possible to perform flexible audio output setting corresponding to a case where the amount changes.

  According to a sixth aspect of the present invention, personal characteristic acquisition means for acquiring at least one personal characteristic data among the sight, gender, and age of the occupant recorded in the storage medium, and brightness data in the passenger compartment are acquired. The visual ability indicated by the personal characteristic data acquired by the personal characteristic acquisition means is included in the brightness acquisition means and the standard visibility index that increases as the brightness indicated by the brightness data acquired by the brightness acquisition means increases. This is a program that causes a computer to function as image display setting means for setting an image display to be performed with an easy-to-view index obtained by multiplying a coefficient that becomes larger as it tends to be inferior.

  The invention described in claim 7 is a personal characteristic acquisition means for acquiring at least one personal characteristic data among the hearing ability, gender, and age of the occupant recorded in the storage medium, and acquires acoustic noise amount data in the passenger compartment. The personal characteristic data acquired by the personal characteristic acquisition means indicates a reference volume that increases as the acoustic noise amount indicated by the acoustic noise amount acquisition means and the acoustic noise amount data acquired by the acoustic noise amount acquisition means increases. This is a program that causes a computer to function as volume setting means for setting so that sound output is performed for a frequency band based on a result of multiplying a coefficient that becomes larger as hearing ability tends to be inferior.

  In this way, the present invention can be understood as a program.

  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. The vehicle navigation device 1 according to the present embodiment has individual characteristics indicating the brightness of the vehicle interior, the amount of acoustic noise in the vehicle interior, and the visual and auditory abilities of the passenger, in addition to the normal functions of the vehicle navigation device 1. Based on the data, the brightness of the screen display and the sound output volume are set.

  The vehicle navigation device 1 includes a position detector 11, an operation switch group 12, an image display device 13, a speaker 14, a card reader 15, a RAM 16, a ROM 17, an external storage medium 18, a microphone 19, a brightness sensor 20, and a CPU 21. have.

  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. Is output to the CPU 21.

  The operation switch group 12 includes a plurality of mechanical switches provided in the vehicle navigation device 1 and an input device such as a touch panel provided so as to overlap the display surface of the image display device 13. A signal based on the touch is output to the CPU 21.

  The image display device 13 displays a video based on the video signal output from the CPU 21 to the user. Examples of the display image include a map centering on the current location.

  The card reader 15 outputs a detection signal to the CPU 21 when detecting insertion of a card type storage medium such as an IC card, a memory card, a compact flash (registered trademark), or smart media. Further, the card reader 15 reads out data recorded on the inserted card-type storage medium based on the control from the CPU 21 and outputs the data to the CPU 21.

  The external storage medium 18 is a non-volatile storage medium such as an HDD, and stores a program read and executed by the CPU 21, map data for route guidance, and the like.

  The map data includes road data and facility data including the position and type of road pieces (links) and intersections (nodes), connection relationship information between intersections and road pieces, and the like. The facility data has a plurality of entries for each facility, and each entry has data indicating name information, location information, facility type information, and the like of the target facility.

  The microphone 19 is mounted in the vehicle interior and outputs the sound in the vehicle interior to the CPU 21 as data.

  The brightness sensor 20 is embedded in the image display surface of the image display device 13 outwardly with respect to the image display device 13, so that the external light on the image display surface of the image display device 13 (that is, the image display device 13 itself is detected). The brightness of the light other than the originating light is detected, and the detected data is output to the CPU 21.

  A CPU (corresponding to a computer) 21 executes a program for the operation of the vehicle navigation apparatus 1 read from the ROM 17 and the external storage medium 18, and a storage medium inserted into the card reader 15 at the time of execution. , Read information from RAM 16, ROM 17, and external storage medium 18, write information to RAM 16 and external storage medium 18, position detector 11, operation switch group 12, image display device 13, speaker 14, and card reading Signals are exchanged with the machine 15, the microphone 19, and the brightness sensor 20.

  Specific processing performed by the CPU 21 executing the program includes current position specifying processing, guidance route search processing, route guidance 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 guide route search process is a process of receiving an input of a destination by the user from the operation switch group 12 and calculating an optimum guide route from the current position to the destination.

  In the route guidance process, map data is read from the external storage medium 18 and an image in which the calculated guidance route, destination facility, transit facility, current position, etc. are superimposed on the map indicated by this map data is output to the image display device 13. In this process, a guidance voice signal for instructing a right turn, a left turn, or the like is output to the speaker 14 when the host vehicle needs to arrive before the guidance intersection.

  Note that the CPU 21 can change the display luminance of the image displayed on the image display device 13 in the processing of the CPU 21. Specifically, a luminance variable for setting the display luminance is secured in the RAM 16, and when the CPU 21 outputs an image signal to the image display device 13, the value of this luminance variable is set with respect to the luminance of each pixel. An offset (or multiplication) value is output. Then, the CPU 21 can change the value of this luminance variable as necessary. As a result, when the value of the brightness variable changes, the brightness of the entire display image in the image display device 13 changes.

  In such processing of the CPU 21, the volume of the audio signal output to the speaker 14 can be changed by the CPU 21 for each frequency band. Specifically, a volume variable for a high frequency band (high range), a volume variable for a medium frequency range (mid range), and a volume variable for a low frequency range (low range) are secured in the RAM 16, and the CPU 21 When outputting an audio signal to the speaker 14, a value obtained by multiplying (or offsetting) a corresponding volume variable for the signal intensity of each frequency band is output. And CPU21 can change the value of these volume variables as needed. As a result, when the value of each volume variable changes, the output volume of the entire frequency band of the speaker 14 changes.

  Next, FIG. 2 shows a program 100 (corresponding to a program in claims) executed by the CPU 21 to change these luminance variables and volume variables. The CPU 21 starts when the vehicle ignition is turned on, and then starts executing the program 100. First, in step 110, the insertion of the personal characteristic data card into the card reader 15 is started from the card reader 15. Wait until detection based on the detection signal. The personal characteristic data card is a card-type storage medium having data on hearing of each passenger's age, sex, visual acuity, high, medium, and low frequency bands as health check data of the passenger such as a driver.

  Once detected, in step 120, the age, sex, visual acuity and hearing data are read from the inserted personal characteristic data card.

  In step 130, brightness data of the display screen of the image display device 13 is acquired from the brightness sensor 20.

  Subsequently, in step 140, the acoustic data in the vehicle compartment is acquired from the microphone 19 when no sound is output from the speaker 14. Here, by performing frequency analysis on the acquired acoustic data, each volume data of high frequency band, medium frequency band, and low frequency band, that is, data of sound intensity is calculated.

  Subsequently, in step 150, a luminance variable is set based on the personal characteristic data acquired in step 120 and the brightness data acquired in step 130. Further, each volume variable is set based on the personal characteristic data acquired in step 120 and the volume data in the vehicle compartment in each frequency band acquired in step 140.

  Subsequently, in step 160, the process waits until a predetermined time (for example, 10 minutes) elapses, and when it elapses, step 130 is executed again. As a result, the brightness data and volume data in the passenger compartment are updated at predetermined time intervals, and the luminance variable and volume variable are updated accordingly.

  Here, the processing of step 150 will be described in detail. In step 150, the subroutine 200 shown in FIG. 3 and the subroutine 300 shown in FIG. 4 are executed once in this order. Note that the subroutine 200 and the subroutine 300 are part of the program 100.

  First, in step 210 of the subroutine 200, the CPU 21 determines the magnification A based on the visual acuity data. The magnification A is a value of 1 or more, and is determined so that the value decreases as the visual acuity increases. As a specific example, when the visual acuity indicated by the visual acuity data is 1.0 or more, the magnification A is 1.0, and when the visual acuity is less than 1.0 and 0.7 or more, the magnification A is 1.1, and the visual acuity is When the ratio is less than 0.7, the magnification A is 1.2. The eyesight data is the eyesight data obtained when the person who is the subject of the eyesight data uses glasses or the like.

  Subsequently, in step 220, the magnification B is determined based on the age data. This magnification B is a value of 1 or more, and is set so that the value increases as the age increases. As a specific example, when the age indicated by the age data is 40 years old or less, the magnification B is 1.0, and when the age is 41 years old to 50 years old, the magnification B is 1.03 and the age is 51 years old. In the above case, the magnification B is 1.05.

  In step 230, the magnification C is determined based on the sex data. This magnification C is a value of 1 or more. As a specific example, the magnification C is 1.0 when the gender indicated by the gender data is male, and the magnification C is 1.05 when the gender indicated by the gender data is female.

Subsequently, at step 240, a reference value D is obtained based on the brightness data. FIG. 5 shows an example of the relationship between the brightness data and the reference value D. In this graph, the brightness data on the horizontal axis is lux display, and the display brightness on the vertical axis is cd / m ² display. In this graph, a solid line 31 indicates the brightness of the reference value D for each brightness data. For example, if the brightness of the outside light of the display screen of the image display device 13 is 100 lux, the reference value D is 50 cd / ^{m 2,} when the brightness is 300 lux, the reference value D is 150 cd / ^{m 2} When the brightness is 500 lux, the reference value D is 250 cd / m ² . Thus, the brightness of the reference value D is determined so as to increase as the brightness data indicates a brighter value.

  Subsequently, in step 250, a value obtained by multiplying the reference value D determined as described above by the magnification A, the magnification B, and the magnification C is set as a luminance variable for offset. The dependency of the brightness variable on the brightness data after the multiplication of the magnification A, the magnification B, and the magnification C in this manner is as indicated by a dotted line 32 in FIG.

  Subsequently, in step 260, the RAM 16 sets the value obtained by multiplying the reference character height by the magnification A, the magnification B, and the magnification C determined as described above as the character height to be displayed on the image display device 13. Set. In this way, when displaying a character, the CPU 21 can determine the display height of the character by referring to the setting in the RAM 16. FIG. 6 illustrates an example of how the display character “A” is enlarged. The character before enlargement is a reference character 41 indicated by a solid line, and the character after enlargement is a character 42 indicated by a dotted line. In this way, the character width is increased as the height increases.

  After step 260, the execution of the subroutine 200 ends, and the CPU 21 subsequently starts the execution of the subroutine 300 of FIG. 4. First, in step 310, the magnification E1 for the high frequency band based on the hearing data for each frequency band, A magnification E2 for the medium frequency band and a magnification E3 for the low frequency band are determined. These magnifications E1 to E3 are values of 1 or more, and become higher as the hearing ability is lower for each frequency band.

  As a specific example, the magnification E1 is 1.0 if the hearing data indicates that the high frequency band is normal, and the magnification E1 is 1.2 if it indicates that the audio data is abnormal. If the hearing data indicates that the middle frequency band is normal, the magnification E2 is 1.0, and if the hearing data indicates that it is abnormal, the magnification E2 is 1.2. Further, if the hearing data indicates that the low frequency band is normal, the magnification E3 is 1.0, and if the hearing data indicates that it is abnormal, the magnification E3 is 1.2.

  Subsequently, in step 320, the magnification F is determined based on the age data. This magnification F is a value of 1 or more, and is set so that the value increases as the age increases. As a specific example, when the age indicated by the age data is 40 years old or less, the magnification F is 1.0, and when the age is 41 years old to 50 years old, the magnification F is 1.03 and the age is 51 years old. In the above case, the magnification F is 1.05.

  In step 330, the magnification G is determined based on the sex data. This magnification G is a value of 1 or more. As a specific example, when the gender indicated by the gender data is male, the magnification G is 1.0, and when the gender indicated by the gender data is female, the magnification G is 1.05.

  Subsequently, at step 340, a high frequency band magnification H1, a medium frequency band magnification H2, and a low frequency band magnification H3 are determined based on the volume data for each frequency band calculated from the acoustic data. These magnifications H1 to H3 are values of 1 or more, and become higher as the volume data is higher for each frequency band.

  As a specific example, if the volume indicated by the high frequency band volume data is less than a reference value for a predetermined high frequency band, the magnification H1 is 1.0, and if it is greater than the reference value, the magnification H1 is 1.1. Become. Further, if the volume indicated by the medium frequency band volume data is less than a predetermined reference value for the middle frequency band, the magnification H2 is 1.0, and if it is greater than the reference value, the magnification H2 is 1.1. If the volume indicated by the low frequency band volume data is less than a predetermined reference value for the low frequency band, the magnification H3 is 1.0, and if it is greater than the reference value, the magnification H3 is 1.1.

  Subsequently, at step 350, values based on the magnifications E1 to E3, the magnification F, the magnification G, and the magnifications H1 to H3 determined as described above are set as the sound volume variables.

  Specifically, the volume variable for the high frequency band is set to a result value of magnification E1 × magnification F × magnification G × magnification H1, and the volume variable for the medium frequency band is set to magnification E2 × magnification F × magnification G. The result value of x magnification H2 is set, and the volume variable for the low frequency band is set to the result value of magnification E3 x magnification F x magnification G x magnification H3. After step 350, execution of subroutine 300 ends.

  When the CPU 21 executes the program 100 as described above, the vehicle navigation apparatus 1 acquires the recorded personal characteristic data of the occupant's eyesight, gender, and age (see step 120), and the brightness of the passenger compartment. The data is acquired (see step 130), the acoustic noise amount data in the passenger compartment is acquired (see step 140), and the reference brightness (that is, the reference value D) is increased as the brightness indicated by the acquired brightness data is higher. The display is set so that the image is displayed with the brightness as a result of multiplying by a coefficient (that is, magnification A × magnification B × magnification C) that increases as the visual ability indicated by the acquired personal characteristic data tends to be inferior. Personal characteristics acquired at a reference volume (that is, volume of original sound × magnification H) that increases as the amount of acoustic noise indicated by the acoustic noise data increases. Over data is set so that the hearing ability is larger than enough in poor trend factor (i.e. magnification E × magnification F × magnification G) audio output volume multiplied by the results is performed showing (see step 150).

  Thus, the vehicle navigation apparatus 1 has a brightness obtained by multiplying the reference brightness that increases as the lightness in the passenger compartment increases by a coefficient that increases as the passenger's visual ability tends to deteriorate. The volume is the result of multiplying the reference volume, which increases as the amount of acoustic noise in the passenger compartment increases, by the coefficient that increases as the passenger's hearing ability tends to deteriorate. It can be set to perform audio output.

  Further, the vehicle navigation apparatus 1 obtains the acquired frequency at the reference volume for each frequency band that increases as the acoustic noise amount indicated by the acquired acoustic noise amount data in the high, medium, or low frequency band increases. It is set so that the sound output for the frequency band is performed with the volume obtained by multiplying the coefficient for each frequency band that becomes larger as the hearing ability indicated by the hearing data of the band becomes lower.

  In this way, the vehicle navigation device 1 can be used for each frequency band that is targeted even when the hearing ability is different for each frequency band targeted even by the same person, and even at the same time in the same passenger compartment. It is possible to perform flexible audio output setting corresponding to the case where the amount of acoustic noise changes.

  Further, the vehicle navigation apparatus 1 is obtained by multiplying the reference character height by a coefficient (that is, magnification A × magnification B × magnification C) that increases as the visual ability indicated by the acquired personal characteristic data tends to be inferior. Setting is made so that the image is displayed at the character height (see step 260). Here, the character height to be displayed may also have lightness dependency such that the higher the lightness indicated by the acquired brightness data, the larger the character height.

  In the above embodiment, the CPU 21 executes step 120 of the program 100 to function as a personal characteristic acquisition unit. Further, the CPU 21 executes step 130 of the program 100 to function as a brightness acquisition unit. Further, the CPU 21 executes step 140 of the program 100 to function as an acoustic noise amount acquisition unit. Further, the CPU 21 executes step 150 of the program 100 to function as an image display setting unit.

  The card reader 15 may be capable of reading personal characteristic information in a storage medium (for example, a USB memory, a memory stick, etc.) other than a card-type storage medium.

  Further, in the above embodiment, luminance is used as a specific example of the visibility index, but this may be contrast or color temperature, or any combination thereof. .

  In the above-described embodiment, the CPU 21 outputs an image signal obtained by offsetting the luminance variable for each pixel to the image display device 13. However, this is not always necessary. The luminance of each pixel output to the device 13 may be uniformly set to a value indicated by the luminance variable.

It is a hardware block diagram of the vehicle navigation apparatus 1 which concerns on embodiment of this invention. It is a flowchart of the program 100 which CPU21 performs. 3 is a flowchart of a subroutine 200 of the program 100. 3 is a flowchart of a subroutine 300 of the program 100. It is a graph which shows the relationship between brightness data and display brightness. It is a figure which shows an example of correction | amendment of a character notionally.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Vehicle navigation apparatus, 11 ... Position detector, 12 ... Operation switch group,
13 ... Image display device, 14 ... Speaker, 15 ... Card reader, 16 ... RAM,
17 ... ROM, 18 ... external storage medium, 19 ... microphone, 20 ... brightness sensor,
21 ... CPU, 31 ... line showing reference luminance, 32 ... dotted line showing luminance after correction,
41 ... Reference character, 42 ... Character after height correction, 100 ... Program,
200, 300 ... Subroutine.

Claims (7)

Personal characteristic acquisition means for acquiring personal characteristic data of at least one of the sight, gender, and age of the occupant recorded in the storage medium;
Brightness acquisition means for acquiring brightness data in the passenger compartment;
The higher the lightness indicated by the brightness data acquired by the brightness acquisition means, the higher the visibility, the higher the visibility, the more the visual ability indicated by the personal characteristic data acquired by the personal characteristic acquisition means tends to be inferior. A navigation device comprising: an image display setting unit configured to perform image display with an easy-to-see index obtained by multiplying a coefficient that increases. Personal characteristic acquisition means for acquiring personal characteristic data of at least one of the hearing ability, gender, and age of the occupant recorded in the storage medium;
Acoustic noise amount acquisition means for acquiring acoustic noise amount data in the passenger compartment;
The higher the acoustic noise amount indicated by the acoustic noise amount data acquired by the acoustic noise amount acquisition means, the higher the reference volume becomes, so that the auditory ability indicated by the personal characteristic data acquired by the personal characteristic acquisition means tends to be inferior. A navigation device comprising: volume setting means for setting so that sound output is performed at a volume based on a result obtained by multiplying a larger coefficient. The personal characteristic acquisition means acquires hearing data for each of a plurality of frequency bands,
The volume setting means is configured such that the hearing data of each frequency band acquired by the personal characteristic acquisition means is set to a reference volume that increases as the acoustic noise amount indicated by the acoustic noise amount data acquired by the acoustic noise amount acquisition means increases. 3. The navigation apparatus according to claim 2, wherein a setting is made so that sound output for the frequency band is performed at a volume based on a result of multiplying a coefficient that becomes larger as the hearing ability shown is lower. The acoustic noise amount acquisition means acquires acoustic noise amount data for each of a plurality of frequency bands,
The volume setting means has a reference volume for the frequency band that becomes larger as the acoustic noise amount indicated by the acoustic noise amount data of a certain frequency band acquired by the acoustic noise amount acquisition means becomes larger. 3. The audio output for the frequency band is set to be performed at a volume based on a result of multiplying a coefficient that becomes larger as the auditory ability indicated by the acquired personal characteristic data tends to be inferior. The navigation device described. The personal characteristic acquisition means acquires hearing data for each of a plurality of frequency bands,
The acoustic noise amount acquisition means acquires acoustic noise amount data for each of a plurality of frequency bands,
The volume setting means has a reference volume for the frequency band that becomes larger as the acoustic noise amount indicated by the acoustic noise amount data of a certain frequency band acquired by the acoustic noise amount acquisition means becomes larger. The sound output for the frequency band is set to be performed at a volume based on a result of multiplying a coefficient that becomes larger as the hearing ability indicated by the acquired hearing data of the frequency band is lower. The navigation device described. Personal characteristic acquisition means for acquiring personal characteristic data of at least one of the sight, gender, and age of the occupant recorded in the storage medium;
The personal characteristic acquisition unit acquires the brightness acquisition unit that acquires the brightness data of the vehicle interior, and the reference visibility index that increases as the brightness indicated by the brightness data acquired by the brightness acquisition unit increases. A program that causes a computer to function as an image display setting unit that performs setting so that an image is displayed with a legibility index obtained by multiplying a coefficient that increases as the visual ability indicated by the personal characteristic data tends to be inferior. Personal characteristic acquisition means for acquiring personal characteristic data of at least one of the hearing ability, gender, and age of the occupant recorded in the storage medium;
Acoustic noise amount acquisition means for acquiring acoustic noise amount data in the vehicle interior, and acquisition of the personal characteristics to a reference volume that increases as the acoustic noise amount indicated by the acoustic noise amount data acquired by the acoustic noise amount acquisition means increases. As a volume setting means for setting so that sound output for the frequency band is performed at a volume based on a result of multiplying a coefficient that becomes larger as the hearing ability indicated by the personal characteristic data acquired by the means tends to be inferior, A program to make it work.

Images