KR101503801B1 - navigation system and method for displaying background image according to sunrise sunset time thereof - Google Patents

Abstract

A first step of calculating a sunrise time and a sunset time corresponding to the position of the vehicle detected through the GPS receiver so as to improve the satisfaction and visibility of the product by enhancing the background display according to sunrise and sunset; A second step of dividing and setting a sunrise transition time zone including the calculated sunrise time and a sunset transition time zone including the sunset time; And fade-in the night image and fade-in the night image when the current time is in the sunrise transition time zone, fade-in the night image when the current time is in the sunset transition time zone, And a third step of adjusting the R, G, and B values of the navigation device.

Description

A navigation device and a method of displaying the background of the sunrise and sunset according to the navigation system and method,

BACKGROUND OF THE INVENTION 1. Field of the Invention [0002] The present invention relates to a navigation device, and more particularly, to a navigation device for improving the satisfaction and visibility of a product by enhancing background display according to sunrise and sunset.

Recently, the supply and demand of vehicle terminals are increasing. At this time, typical examples of the vehicle terminal include a navigation device, a vehicle TV, and a telematics system. The vehicle terminal provides a function of visually transmitting necessary information to the user.

Generally, the navigation apparatus receives a radio wave from a GPS satellite and displays a map by reading data stored in a storage medium on a display unit installed in the vehicle, and displays the current position of the vehicle calculated by the computer on a map of the monitor screen . Also, when the user inputs a destination, the destination is searched to display the route from the current location to the destination through the display unit.

At this time, in order to implement the navigation apparatus, map data is indispensably required. The map information is recorded in a storage medium provided in a navigation device of a vehicle, and is connected to a server that provides map information and a vehicle terminal installed in the vehicle via a wireless network, A method of receiving only map information in the vicinity of the driving position in real time is utilized.

In addition, the navigation apparatus is configured to express a road map using a three-dimensional graphic technique in order to give a sense of realism to a user in acquiring road information to improve visibility. Since the navigation device is mounted on a vehicle for movement, it operates in various time and spatial environments.

Furthermore, a temporal environment such as a dark time without sunlight or a bright time such as midday with intense sunlight, such as before or after sunrise, is an important consideration for the navigation apparatus that visually provides various information.

On the other hand, the conventional navigation apparatus obtains weather information every predetermined period through a weather information providing server or the like by using a communication device installed in the vehicle. At this time, a background processing method of detecting an image corresponding to the weather information among several pre-stored background images and outputting it as a background of a road map.

However, in the background processing method of the related art, a plurality of images are stored in a database for background expression according to a weather condition and a time condition. Also, since the size of the image file increases according to the resolution of the background, and further background images are required for various background representations, a large storage space is required and the efficiency of the product is reduced.

Since the background image is detected in the pre-stored image file according to the condition, the background image is intermittently changed at a predetermined time different from the brightness of the continuously changing real time, There is a problem that the user is inconvenienced in recognizing the road map.

Further, there is a problem that the step of detecting the image corresponding to the changed condition and outputting the detected image as the wakeup time and the time vary is not configured efficiently, and thus the speed of the calculation processing is lowered.

Korean Patent No. 10-0446478

In order to solve the above-mentioned problems, the present invention provides a background display method according to the sunrise and sunset of a navigation device in which the background display according to sunrise and sunset is enhanced to improve the satisfaction and visibility of products.

,

로 산출하여 조절하며,
현재시각이 상기 일몰천이시간대에 진입되면 상기 주간이미지 비율은 점감되고 상기 야간이미지 비율은 점증되도록 상기 디스플레이부 각 픽셀의 R,G,B 값을

로 산출하여 조절하는 제3단계를 포함하는 네비게이션 장치의 일출 및 일몰에 따른 배경 표시방법을 제공한다. In order to solve the above-described problems, the present invention provides a GPS receiver, comprising: a first step of calculating a sunrise time and a sunset time corresponding to a position of a vehicle detected through a GPS receiver; A second step of dividing and setting a sunrise transition time zone including the calculated sunrise time and a sunset transition time zone including the sunset time; G, and B values of each pixel of the display unit so that the night image ratio is decreased and the daytime image ratio is increased when the current time is entered in the sunrise transition time zone

,

Respectively,
The R, G and B values of each pixel of the display unit are adjusted so that the daytime image ratio is decreased and the nighttime image ratio is increased when the current time enters the sunset transition time zone

And a third step of calculating and controlling the background of the navigation device according to the sunrise and sunset of the navigation device.

Here, in the second step, the sunrise transition time zone is set from a time after subtracting the predetermined time before sunrise to a time when the pre-set sunrise time is added to the sunrise time, and the sunset transition time zone It is preferable to set the time from the time at which the predetermined time before sunset is subtracted from the sunset time to the time at which the predetermined time after sunset is added from the sunset time.

Further, in the third step, when the current time enters the sunset transition time zone, the image ratio of the pre-set color displayed in the pixels of the preset range among the pixels of the display unit increases, and the pre- The R, G, and B values of each pixel of the display unit are adjusted.

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Wherein the glare image ratio displayed in a predetermined range of pixels among the pixels of the display unit is expressed by:

.

Wherein the step of calculating the sunrise time and the sunset time corresponding to the position of the vehicle in the first step includes the step of calculating coordinates including the longitude and the latitude corresponding to the position of the vehicle detected through the GPS receiver, Detecting coordinate information of a position adjacent to the reference coordinates in the sunrise time and sunset time data of each of the previously measured coordinates and detecting a sunrise time and a sunset time corresponding to the coordinate information Calculating a difference between the latitude and the longitude between the reference coordinates and the coordinate information, calculating a daily day length coefficient corresponding to the date information, calculating the difference between the calculated latitude and longitude, Calculating a time correction value by applying the time correction value to the extracted sunrise time, and adding or subtracting the time correction value to the extracted sunrise time and the sunset time Hamham is preferred.

,

로 산출하여 조절하며,
현재시각이 상기 일몰천이시간대에 진입되면 상기 주간이미지 비율은 점감되고 상기 야간이미지 비율은 점증되도록 상기 디스플레이부 각 픽셀의 R,G,B 값을

로 산출하여 조절하는 이미지 연산부; 및 상기 야간이미지, 상기 주간이미지 및 지도 정보를 출력하는 상기 디스플레이부를 포함하는 네비게이션 장치를 제공한다. According to another aspect of the present invention, there is provided a GPS receiver comprising: a GPS receiver for detecting a position of a vehicle; A sunrise time and a sunset time corresponding to the position of the vehicle are calculated, a sunrise transition time zone including the sunrise time and a sunset transition time zone including the sunset time are set and set, and the current time is set in the sunrise transition time zone , The R, G, and B values of each pixel of the display unit are adjusted so that the ratio of the night image is reduced and the ratio of the daytime image is increased.

,

Respectively,
The R, G, and B values of each pixel of the display unit are adjusted so that the daytime image ratio is decreased and the nighttime image ratio is increased when the current time enters the sunset transition time zone

An image calculation unit for calculating and adjusting the image; And the display unit outputting the night image, the daytime image, and the map information.

In addition, the image operation unit may increase the image ratio of the predetermined color to be displayed in the predetermined range of pixels of each of the pixels of the display unit when the current time enters the sunset transition time, It is preferable to adjust the R, G, and B values of each pixel of the display unit.

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Through the above solution, the present invention provides the following effects.

First, it is divided into a sunrise transition time zone including the sunrise time and a sunset transition time zone including the sunset time, and the daytime image and the nighttime image are gradually changed with time according to the sunset or sunrise time of reality Thereby providing a time for the user to adapt to the brightness change of the background image, thereby preventing eye fatigue, improving visibility, and improving the usability of the product .

Second, when the current time enters the sunrise transition time zone, the night image is faded out and the daytime image is faded in. When the current time is in the sunset transition time zone, the daytime image is faded out and the nighttime image is fade- The R, G, and B values of the pixels are adjusted to display the background image that is changed in a stepwise manner similar to the change of the brightness of the sunset and the sunrise time of the real world. Therefore, the sense of realism is improved, The driving safety can be improved by the improvement of the recognition performance.

Thirdly, when the current time enters the sunset transition time zone, the image ratio of the predetermined color displayed in the pixels of the preset range among the pixels of the display unit increases, G, and B values of the respective pixels of the display unit are adjusted so that the glow image is displayed on the background image with the passage of time by adjusting the R, G, and B values of the navigation unit, So that the screen processing of the display unit can be provided at a higher level of quality and a pleasant ride feeling can be provided.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is an exemplary view showing a time zone segment of a conventional navigation apparatus; Fig.
2 is an exemplary view showing a time zone segment of a navigation apparatus according to an embodiment of the present invention;
3 is a block diagram of a navigation device in accordance with an embodiment of the present invention.
4 is a flowchart illustrating a background display method according to a sunrise and sunset of a navigation apparatus according to an embodiment of the present invention.
5 is a flowchart showing the calculation of sunrise time and sunset time according to an embodiment of the present invention;
6 is a flowchart illustrating a method of displaying a background image on a display unit in a sunrise transition time zone according to an embodiment of the present invention.

Hereinafter, a method of displaying a background according to sunrise and sunset of a navigation apparatus according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is an exemplary view showing a time zone segment of a conventional navigation device, and FIG. 2 is an exemplary view showing a time zone segment of a navigation device according to an embodiment of the present invention.

As shown in FIG. 1, the conventional navigation apparatus divides a night time zone and a weekly time zone into a sunrise time and a sunset time. Therefore, the background image output to the display unit at the sunrise time is intermittently changed from the night image to the daytime image, and the background image is rapidly changed from the daytime image to the nighttime image at the sunset time.

As a result, unlike the brightness of reality which changes continuously with time, the background image is rapidly changed at a certain time, so that there is insufficient time to adapt to the brightness of the background image, so that the user can recognize and recognize the road map provided through the display unit There was an inconvenience.

Meanwhile, referring to FIG. 2, the time zone segment of the navigation apparatus of the present invention includes a night time zone, a sunrise transition zone, a daytime zone, and a sunset transition zone. Here, the sunrise transition time zone is set from a time after subtracting the pre-set time required for the sunrise time to a time after the pre-set sunrise time is added to the sunrise time. The sunset transition time zone is set from a time when the predetermined time before sunset is subtracted from the sunset time to a time when the predetermined time after sunset is added from the sunset time.

In detail, the background image changes from the daytime image to the nighttime image in the sunset transition time zone, and the background image changes from the nighttime image to the weekly image in the sunrise transition time zone. Here, the time of the sunset transition and the time of the sunrise transition may be set so that the background image does not change at once, but when the current time enters the sunset transition time zone or the sunrise transition time zone, Can be gradually changed.

Accordingly, the background image displayed on the display unit can be gradually changed in a similar manner to the real environment, such that the brightness gradually changes when sunset or sunrise occurs in reality. Accordingly, the user can easily recognize the map information displayed on the display unit by providing a time for the user's eyes to adapt to the brightness of the display unit.

In addition, the background image that is gradually changed can provide an effect of enhancing the realism of the map information displayed on the display unit, thereby enhancing the quality of the product.

3 is a block diagram of a navigation device according to an embodiment of the present invention.

3, the navigation apparatus includes a GPS receiving unit 110, a display unit 150, a map database 120, a sunrise and sunset database 140, and an image calculation unit 130.

Here, the navigation device refers to a device that notifies the current position of a vehicle or guides a route to a destination. At this time, the navigation device can be divided into a system in which information received through the GPS receiver 110 is used and a system in which a position of the vehicle is calculated through a repeater installed in various places by a mobile communication company. However, most of the navigation devices are driven in such a manner that information obtained through the GPS receiver 110 is used.

On the other hand, the display unit 150 outputs the background image including the location of the vehicle, the map information, and the daytime image and the nighttime image. Here, the map information includes road information, an optimum route from a departure place to a destination, a time required when the optimum route is traveled by an automobile, a vehicle speed, fuel information, and a road situation.

The map information includes a road image according to the route that is currently traveling. At this time, the shape of the road and buildings around the road are output to the road image, and the day image or the night image is output as the background image.

On the other hand, the map database 120 includes map data. Here, the map data includes not only various kinds of information of the main road, but also various information according to major points such as a building located around the main road, for example, a bank, a school, a hospital, a parking lot,

Also, the GPS receiving unit 110 detects the position of the vehicle. Here, the GPS receiver 110 receives signals from a plurality of GPS satellites and detects the position of the vehicle equipped with the navigation device. Generally, the GPS receiver 110 receives signals through three or more GPS satellites, The position information of the vehicle can be detected.

At this time, when the position of the vehicle is detected, the main road information can be provided based on the map data of the map database 120.

On the other hand, the sunrise and sunset database 140 includes coordinate information including a sunrise time and a sunrise time measured in each coordinate. At this time, the sunrise time and the sunset time data are preferably the same as the previous year to prevent the occurrence of an error due to the change rate of the sunrise time and the sunset time of the year unit.

The coordinate information included in the sunrise and sunset database 140 may be set as a point representative of a detailed area (for example, Busan, Seoul, Gwangju, Daegu, etc.) within a specific area of a country.

On the other hand, the image calculation unit 130 calculates a sunrise time and a sunset time corresponding to the position of the vehicle, and sets and sets a sunset transition time zone including the sunrise time and the sunset time.

When the current time is in the sunrise transition time zone, the night image is faded out and the daytime image is faded in. When the current time is in the sunset transition time zone, the daytime image is faded out and the nighttime image is faded in. 150) Adjust the R, G, and B values of each pixel.

When the sunrise time and the sunset time corresponding to the position of the vehicle are calculated, the time from the time at which the pre-set time for pre-shooting is subtracted at the sunrise time to the time at which the pre- Set the time zone.

For example, the time required for the sunshine may be set to 30 minutes, and the time after sunshine may be set to 10 minutes. At this time, when the calculated sunrise time is 7:30, the sunrise transition time zone is divided into 7:00 to 7:40. Of course, it is preferable that the time required for sunshine and the time required for sunshine are set by measuring the time taken for the actual sunshine to brighten and calculating the average value of the measured time.

The time from the time at which the predetermined time before sunset is subtracted from the sunset time to the time at which the predetermined time after sunset is added is set as the sunset transition time zone. For example, the time before sunset may be set to 10 minutes, and the time after sunset may be set to 30 minutes. At this time, when the calculated sunset time is 18 o'clock, the sunset transition time zone is divided into 17:50 to 18:30. Of course, it is preferable that the time before sunset and the time after sunset are set by measuring the time taken for the actual solution to settle and measuring the average time of the measured time.

When the sunrise transition time zone and the sunset transition time zone are delimited and set, the image operation unit 130 determines whether the current time has entered the sunrise transition time zone or the sunset transition time zone, The R, G, and B values are adjusted.

Here, when the current time enters the sunrise transition time zone, the ratio of R, G, B of each pixel of the display unit 150 is adjusted so that the night image ratio is decreased and the daytime image ratio is increased. In this case, the diminution is used to mean that the diminution gradually decreases with time, and the diminution is used to mean that the diminution gradually increases with time. The diminution of the night image ratio and the increase of the daytime image ratio can be expressed as a time-wise transition function.

In detail, the time-wise transition function indicating the increase of the daytime image ratio in the sunrise transition period

Lt; / RTI > At this time, the time transition function indicates that the daytime image ratio is increased in proportion to the square of time.

In addition, when the current time is the time when the sunrise transition time period ends, the weekly image ratio becomes 1, and the background image is displayed as a complete weekly image.

On the other hand, when the current time enters the sunset transition time, the ratio of R, G, B of each pixel of the display unit is adjusted so that the daytime image ratio is decreased and the night image ratio is increased.

In detail, the time-wise transition function indicating the increase of the night image ratio in the above-mentioned sunset transition time period

Lt; / RTI > At this time, the transition function for time indicates that the night image ratio is increased in proportion to the square of time.

Also, when the current time is the time when the sunset transition time ends, the night image ratio becomes 1, and the background image is displayed as a complete night image.

The values of R, G, and B of each pixel of the display unit are set to "

During the above-mentioned sunset transition period

Lt; / RTI >

During the sunrise transition period

.

For example, when the R, G, and B values of the daytime image are 10, 10, and 10, and the R, G, and B values of the night image are 255, 255, and 255, Value is set to 0, and the R, G, and B values of each pixel of the display unit 150 are set to 10, 10, and 10 to represent a complete daytime image. When the value of the time-based transition function becomes 0.5 according to the passage of time, the R, G, and B values of each pixel of the display unit 150 are set to 137.5, 137.5, and 137.5, . In addition, the value of the time-wise transition function is 1 at the time of departure from the sunset transition time zone, and the R, G, and B values of each pixel of the display unit 150 are set to 255,255,255 to display a complete night image.

In order to improve the computation speed, the time transition function is applied in the range of each pixel of the display unit 150 constituting the background image excluding the road map or the building displayed in the map information among the pixels of the display unit 150 So that the color is adjusted.

Of course, the pixels of the display unit 150 representing the road map or the building in the map information may be further enhanced in quality and visibility by adjusting the brightness and the like by applying the transition function over time.

As a result, the background image displayed on the display unit 150 is gradually changed from the daytime image or the daytime image to the nighttime image in the nighttime image as time elapses.

Accordingly, the background display of the navigation device is displayed realistically so that the user can recognize the information of the display unit 150 more naturally, and also provides time for the eyes to adapt to the brightness change of the background image, The use of the product can be improved.

When the current time enters the sunset transition period, the image operation unit 130 increases the image ratio of the predetermined color displayed in the pixels of the preset range among the pixels of the display unit 150, The R, G, and B values of each pixel of the display unit 150 are adjusted so as to decrease after the maximum value.

For example, the predetermined color may be set to orange or yellow. In addition, the preset range may be set to a fixed area near the horizon line in the background image displayed on the display unit 150. [ Of course, it is also possible that a certain area in the vicinity of the horizon of the background image is set to move slowly as the sun goes from east to west.

The gamut image ratio displayed in the pixels of the predetermined range among the pixels of the display unit 150,

.

At this time, the time-

Lt; / RTI >

The R, G, and B values of a predetermined range of pixels among the pixels of the display unit 150 correspond to the ratio of the image to the image, And R, G, and B values of R, G, and B, respectively.

At this time, the image rate of the glow is 0 at the initial stage of entering the sunset transition time, gradually increases with time, decreases gradually when the predetermined gauge reaches the maximum value, and becomes 0 when it deviates from the sunset transition time zone.

Therefore, the background image is displayed with the glow image further displayed at the sunset transition time, disappears, and is displayed as the night image.

The gradient of the glow effect indicates the degree to which the glow is displayed as the background image. At this time, the larger the glow effect slope, the faster the glow image can be displayed.

Also, the time constant of the glow sets a time at which the maximum value of the glow is displayed, and the maximum value of the glow means the glow image rate when the glow is displayed the darkest. For example, the glow time constant may be set to 0.5. At this time, the image rate of the glow is calculated as the maximum value of the glow when it reaches the middle of the sunset transition time zone.

FIG. 4 is a flowchart showing a background display method according to a sunrise and sunset of a navigation apparatus according to an embodiment of the present invention, FIG. 5 is a flowchart illustrating calculation of sunrise time and sunset time according to an embodiment of the present invention, 6 is a flowchart illustrating a method of displaying a background image on a display unit in a sunrise transition time zone according to an embodiment of the present invention.

As shown in FIG. 4, the navigation device detects the position of the vehicle through the GPS receiver (s10). Then, the sunrise time and the sunset time corresponding to the detected position of the vehicle are calculated (s20).

Referring to FIG. 5, in step s20 of calculating the sunrise time and the sunset time, the longitude and latitude corresponding to the vehicle position are calculated and set as reference coordinates (s21), and current date information is detected (s22). Then, coordinate information including the reference coordinates is extracted using the sunrise time and sunset time data of each coordinate measured in the sunset and sunrise database 140, and sunrise time and sunset time corresponding to the coordinate information are detected (S23).

At this time, it is preferable that the coordinate information included in the sunrise and sunset database 140 is set as a point representative of a detailed area within a specific area of a country unit.

In detail, the coordinate information may have predetermined representative coordinates of points representative of Busan, Seoul, Gwangju, Daegu, and the like, and predetermined range ranges including the representative coordinates. Here, the predetermined representative coordinates are coordinates of a point at which the sunrise time and the sunset time are measured, and are formed so as to apply the sunrise time and sunset time of the representative coordinates in an area located within a predetermined range.

Then, a latitude and a longitude difference between the reference coordinates and the coordinate information is calculated (s24), a daytime low-length coefficient corresponding to the date information is extracted (s25), and the calculated latitude and longitude difference, The daytime coefficient is applied to calculate the time correction value (s26).

As a result of comparing and analyzing the sunrise time and the sunset time for decades, almost the same sunrise time and sunset time are observed every year. However, in order to obtain a more accurate result by reducing the error factor, The sunrise time and the sunset time extracted from the sunrise and sunset database 140 are corrected by calculating the time correction value through the daytime length coefficient.

At this time, the sunrise time and the sunset time measured in the representative coordinates may cause an error due to the difference in hardness and latitude when compared with the sunrise time and sunset time of the reference coordinates to be calculated.

[Proportional expression 1]

Hardness difference between reference point and hardness comparison point: Sunrise / sunset time variation between reference point and hardness comparison point = Hardness difference between target point and reference point: X

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(Where X is a time correction value for the difference in hardness)

[Proportional expression 2]

Latitude difference between reference point and latitude comparison point: Sunrise / sunset time change between reference point and latitude comparison point = Latitude difference between target point and reference point: Y

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(Where Y is the time correction value for latitude difference)

If the proportional expression 1 and the proportional expression 2 are substituted for the positional difference between the representative coordinate and the reference coordinate, a time correction value for correcting the error due to the difference in hardness and latitude can be calculated.

The day length coefficient refers to a predetermined value that is quantified according to the day based on the fact that daytime difference is regularly changed by day. At this time, the corresponding day length coefficient is extracted from the date information, and the time correction value is corrected again.

On the other hand, when the time correction value is calculated, the time correction value is added or subtracted to the extracted sunrise time and the sunset time (s26), and the corrected sunrise time and sunset time are calculated.

When the corrected sunrise time and sunset time are calculated, the sunrise transition time zone including the calculated sunrise time and the sunset transition time zone including the sunset time are set and set (s30).

Accordingly, when the background image is instantaneously changed from nighttime to nighttime or from daytime to nighttime at the sunrise time or the sunset time, but when the current time is entered in the sunset transition time zone or the sunrise transition time zone, The background image may be gradually changed.

On the other hand, if the current time is entered in the sunrise transition period (s40), the night image is faded out and the daytime image is faded in (s70). If the current time is entered in the sunset transition time zone (s50) Adjust the R, G, and B values of each pixel on the display unit so as to fade in the night image (s80).

6, when the current time enters the sunrise transition time zone, the nighttime image is set to M, which is the fade-out image, and the daytime image is set to S, which is an image fading in (s71) .

Then, the background image displayed on the display unit is set to P, and the number of pixels of P is extracted as n (s72). Also, it is possible to calculate the value for all the pixels of the background image by repeating (i) until the value of i increasing by 1 from 0 reaches n (s74).

Of course, x used herein is the time-wise transition function having a value between 0 and 1 (s73), but it is a very short time until the time when the value of i increasing by 1 from 0 reaches n It can be assumed that it does not change.

If the R, G, and B values of all the pixels of the P are calculated (S75, S76), the image of P is output to the display unit, P is repeatedly displayed on the display unit.

Meanwhile, when the current time enters the sunset transition time zone, it is preferable that the daytime image is set to M, which is an image fade-out, and the nighttime image is set to S, which is an image to be fade-in.

In addition, when the current time enters the sunset transition time zone, the image ratio of the pre-set color displayed in the pixels of the preset range among the pixels of the display unit increases, It is preferable that the R, G, and B values are adjusted.

Here, the glare image ratio, which is displayed in a predetermined range of pixels among the pixels of the display unit,

At the beginning of the transition time zone, it is zero and does not appear at all in the pixel of the predetermined range, and the displayed area gradually increases with time. Thus, when the time-wise transition function reaches the glazing point constant, the glare image is displayed on the entire pixels of the predetermined range with a predetermined glare maximum.

Then, when the displayed area is gradually decreased and deviated from the sunset transition time zone, the glow image disappears to zero. Therefore, the background image is displayed with the glow image further displayed at the sunset transition time, disappears, and is displayed as the night image.

Accordingly, the brightness of the night image displayed on the display unit with the dark image of the daytime image displayed on the display unit with a bright light intensity gradually changes in accordance with the sunset time or the sunrise time, It can change. Therefore, it is possible to prevent the eye fatigue by providing a time for the user's eyes to adapt to the brightness change, thereby enabling the user to recognize the background image with improved comfort and visibility, thereby improving the usability of the product.

As described above, the present invention is not limited to the above-described embodiments, and variations and modifications may be made by those skilled in the art without departing from the scope of the present invention. And such modifications are within the scope of the present invention.

110: GPS receiver 120: map database
130: image calculation unit 140: sunrise and sunset database
150:

Claims (10)

A first step of calculating a sunrise time and a sunset time corresponding to the position of the vehicle detected through the GPS receiver;
A second step of dividing and setting a sunrise transition time zone including the calculated sunrise time and a sunset transition time zone including the sunset time; And
The R, G, and B values of each pixel of the display unit are adjusted so that the night image ratio is decreased and the daytime image ratio is increased when the current time enters the sunrise transition time zone

,

Respectively,
The R, G and B values of each pixel of the display unit are adjusted so that the daytime image ratio is decreased and the nighttime image ratio is increased when the current time enters the sunset transition time zone

And a third step of calculating and controlling the navigation device according to the sunrise and sunset of the navigation device. The method according to claim 1,
In the second step,
Wherein the sunrise transition time zone is set from a time of subtracting the time required for one day before the sunrise time to a time after the predetermined sunrise time is added to the sunrise time,
Wherein the time of the sunset transition time is set from a time when the predetermined time before sunset is subtracted from the sunset time to a time when the predetermined time after sunset is added from the sunset time to the background display method according to the sunrise and sunset . delete delete The method according to claim 1,
In the third step,
Wherein when the current time enters the sunset transition time zone, an image ratio of a predetermined color displayed in pixels of a predetermined range among pixels of the display unit increases, and R , G, and B of the navigation device. 6. The method of claim 5,
Wherein the glare image ratio displayed in a predetermined range of pixels among the pixels of the display unit is expressed by:

The method according to any one of claims 1 to 3, The method according to claim 1,
The step of calculating the sunrise time and the sunset time corresponding to the position of the vehicle in the first step,
Calculating coordinates including the longitude and the latitude corresponding to the position of the vehicle detected through the GPS receiver and setting the coordinates as reference coordinates, and detecting current date information;
Detecting coordinate information of a position adjacent to the reference coordinates in the sunrise time and sunset time data of each of the measured coordinates, extracting a sunrise time and a sunset time corresponding to the coordinate information,
Calculating latitude and longitude differences between the reference coordinates and the coordinate information, calculating a daily day length coefficient corresponding to the date information, applying the calculated latitude and longitude difference, and the daily day length coefficient to calculate a time correction Calculating a value,
Further comprising the step of adding or subtracting the time correction value to the extracted sunrise time and the sunset time. A GPS receiver for detecting the position of the vehicle;
A sunrise time and a sunset time corresponding to the position of the vehicle are calculated, a sunrise transition time zone including the sunrise time and a sunset transition time zone including the sunset time are set and set, and the current time is set in the sunrise transition time zone , The R, G, and B values of each pixel of the display unit are adjusted so that the ratio of the night image is reduced and the ratio of the daytime image is increased.

,

Respectively,
The R, G and B values of each pixel of the display unit are adjusted so that the daytime image ratio is decreased and the nighttime image ratio is increased when the current time enters the sunset transition time zone

An image calculation unit for calculating and adjusting the image; And
And the display unit outputting the night image, the daytime image, and the map information. delete 9. The method of claim 8,
Wherein the image operation unit is configured to increase the image ratio of the predetermined color displayed in the pixels of the predetermined range among the pixels of the display unit when the current time enters the sunset transition time, And adjusts the R, G, and B values of each pixel.

Images