JP2001033257A5 - - Google Patents

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Publication number
JP2001033257A5
JP2001033257A5 JP1999205931A JP20593199A JP2001033257A5 JP 2001033257 A5 JP2001033257 A5 JP 2001033257A5 JP 1999205931 A JP1999205931 A JP 1999205931A JP 20593199 A JP20593199 A JP 20593199A JP 2001033257 A5 JP2001033257 A5 JP 2001033257A5
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Japan
Prior art keywords
display screen
tunnel
vehicle
map information
day
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Pending
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JP1999205931A
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Japanese (ja)
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JP2001033257A (en
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Priority to JP20593199A priority Critical patent/JP2001033257A/en
Priority claimed from JP20593199A external-priority patent/JP2001033257A/en
Publication of JP2001033257A publication Critical patent/JP2001033257A/en
Publication of JP2001033257A5 publication Critical patent/JP2001033257A5/ja
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【請求項１】情報を表示する表示画面と、地図情報を記憶する地図情報記憶部と、自車の位置を測位して自車位置を検出する自車位置検出手段と、地図情報に基づき自車位置が存在する道路がトンネルか否かを検出するトンネル走行検出手段と、ＧＰＳ衛星の現在時刻情報と自車位置の緯度・経度により日の出、日没時刻を計算し昼間か夜間かを判断する昼夜判断手段と、トンネル走行検出手段および昼夜判断手段からの指示により表示画面の明度や彩度を自動的に切り替える表示画面明度・彩度切換え手段を備えたことを特徴とするカーナビゲーション装置。 1. A display screen for displaying information, a map information storage unit for storing map information, a vehicle position detecting means for positioning the position of the vehicle and detecting the position of the vehicle, and the vehicle based on the map information. The sunrise and sunset times are calculated from the current time information of the GPS satellite and the latitude / longitude of the own vehicle position to determine whether it is daytime or nighttime, and the tunnel travel detection means that detects whether the road on which the vehicle position exists is a tunnel. A car navigation device including a day / night determination means and a display screen brightness / saturation switching means for automatically switching the brightness and saturation of the display screen according to instructions from the tunnel traveling detection means and the day / night determination means.

【請求項３】 地図情報を記憶する地図情報記憶ステップと、自車の位置を測位して自車位置を検出する自車位置検出ステップと、地図情報に基づき自車位置が存在する道路がトンネルか否かを検出するトンネル走行検出ステップと、ＧＰＳ衛星の現在時刻情報と自車位置の緯度・経度により日の出、日没時刻を計算し昼間か夜間かを判断する昼夜判断ステップと、前記トンネル走行検出ステップによりトンネル上であると判断した場合は表示画面を暗くし、トンネル上でないと判断した場合は前記昼夜判断ステップが昼間と判断した場合は表示画面を明るくさせ、夜間と判断した場合は表示画面を暗くさせる表示画面明度・彩度切換えステップを備えることを特徴とする表示画面の明度・彩度の切換え方法。 3. GroundMap information memory to memorize figure informationStepAnd, the position of the own vehicle is detected by positioning the position of the own vehicle and detecting the position of the own vehicle.StepAnd a tunnel that detects whether the road where the vehicle position exists is a tunnel based on the map informationRunningdetectionStepAnd, day and night judgment to determine whether it is daytime or nighttime by calculating the sunrise and sunset times from the current time information of GPS satellites and the latitude and longitude of the vehicle's position.StepWhen,If it is determined that the tunnel is on the tunnel by the tunnel traveling detection step, the display screen is darkened. If it is determined that the tunnel is not on the tunnel, the display screen is brightened when the day / night determination step is determined to be daytime. If the display screen is darkenedDisplay screen brightness / saturation switchingStepA method of switching between brightness and saturation of a display screen, which comprises.

【００１１】
【課題を解決するための手段】
上記目的を達成するために本発明は、地図情報に基づき自車位置が存在する道路がトンネルなのか否かを検出するトンネル走行検出手段と、ＧＰＳ衛星の現在時刻情報と自車位置の緯度・経度により日の出、日没時刻を計算し昼間か夜間かを判断する昼夜判断手段を有し、トンネル走行検出手段および昼夜判断手段からの指示
により表示画面の明度や彩度を自動的に切り替える表示画面明度・彩度切換え手段を備えた構成のカーナビゲーション装置とする。 0011
[Means for solving problems]
In order to achieve the above object, the present invention presents a tunnel traveling detection means for detecting whether or not the road on which the vehicle position exists is a tunnel based on map information, the current time information of GPS satellites, and the latitude and latitude of the vehicle position. A display screen that has a day / night judgment means that calculates sunrise and sunset times based on longitude and determines whether it is daytime or nighttime, and automatically switches the brightness and saturation of the display screen according to instructions from the tunnel travel detection means and day / night judgment means. The car navigation device is configured to have a lightness / saturation switching means.

【００１３】
【発明の実施の形態】
本発明の請求項１に記載の発明は、情報を表示する表示画面と、地図情報を記憶する地図情報記憶部と、自車の位置を測位して自車位置を検出する自車位置検出手段と、地図情報に基づき自車位置が存在する道路がトンネルか否かを検出するトンネル走行検出手段と、ＧＰＳ衛星の現在時刻情報と自車位置の緯度・経度により日の出、日没時刻を計算し昼間か夜間かを判断する昼夜判断手段と、トンネル走行検出手段および昼夜判断手段からの指示により表示画面の明度や彩度を自動的に切り替える表示画面明度・彩度切換え手段を備えたカーナビゲーション装置であり、昼間のトンネル走行では表示画面が自動的に暗くなり、夜間になれば表示画面が自動的に暗くなり、操作性の高いものとすることができるという作用を有する。 0013
BEST MODE FOR CARRYING OUT THE INVENTION
The invention according to claim 1 of the present invention includes a display screen for displaying information, a map information storage unit for storing map information, and a vehicle position detecting means for positioning the position of the vehicle and detecting the position of the vehicle. The sunrise and sunset times are calculated from the tunnel travel detection means that detects whether the road on which the vehicle position exists is a tunnel based on the map information, the current time information of the GPS satellite, and the latitude and longitude of the vehicle position. A car navigation device equipped with a day / night determination means for determining daytime or nighttime, and a display screen brightness / saturation switching means for automatically switching the brightness and saturation of the display screen according to instructions from the tunnel traveling detection means and the day / night determination means. Therefore, the display screen is automatically darkened during daytime tunnel driving, and the display screen is automatically darkened at nighttime, so that the operability can be improved.

本発明の請求項３に記載の発明は、地図情報を記憶する地図情報記憶ステップと、自車の位置を測位して自車位置を検出する自車位置検出ステップと、地図情報に基づき自車位置が存在する道路がトンネルか否かを検出するトンネル走行検出ステップと、ＧＰＳ衛星の現在時刻情報と自車位置の緯度・経度により日の出、日没時刻を計算し昼間か夜間かを判断する昼夜判断ステップと、前記トンネル走行検出ステップによりトンネル上であると判断した場合は表示画面を暗くし、トンネル上でないと判断した場合は前記昼夜判断ステップが昼間と判断した場合は表示画面を明るくさせ、夜間と判断した場合は表示画面を暗くさせる表示画面明度・彩度切換えステップを備えることを特徴とする表示画面の明度・彩度の切換え方法であり、昼間のトンネル走行では表示画面を自動的に暗くし、夜間になれば表示画面を自動的に暗くし、操作性の高いものとすることができるという作用を有する。 The invention described in claim 3 of the present invention includes: a map information storage step of storing the MAP information, and the vehicle position detecting step of detecting a vehicle position by positioning the position of the vehicle, the own based on the map information determining a tunnel running detecting step road vehicle position exists to detect whether tunneling, the latitude and longitude of the current time information and the vehicle position of the GPS satellites sunrise, whether daytime or nighttime calculate the sunset time If it is determined that the vehicle is on the tunnel by the day / night determination step and the tunnel travel detection step, the display screen is darkened. If it is determined that the vehicle is not on the tunnel, the display screen is brightened if the day / night determination step is determined to be daytime. This is a method for switching the brightness and saturation of the display screen, which is characterized by having a display screen brightness / saturation switching step that darkens the display screen when it is determined to be at night. The display screen is automatically displayed during daytime tunnel driving. It has the effect of making it darker and automatically darkening the display screen at night to improve operability.

JP20593199A 1999-07-21 1999-07-21 Car navigation device and switching method of brightness and chroma of its display screen Pending JP2001033257A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP20593199A JP2001033257A (en) 1999-07-21 1999-07-21 Car navigation device and switching method of brightness and chroma of its display screen

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP20593199A JP2001033257A (en) 1999-07-21 1999-07-21 Car navigation device and switching method of brightness and chroma of its display screen

Publications (2)

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JP2001033257A JP2001033257A (en) 2001-02-09
JP2001033257A5 true JP2001033257A5 (en) 2006-08-10

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JP20593199A Pending JP2001033257A (en) 1999-07-21 1999-07-21 Car navigation device and switching method of brightness and chroma of its display screen

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Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4646538B2 (en) * 2004-03-26 2011-03-09 アルパイン株式会社 Electronic device having navigation function and night view map display method
JP4436186B2 (en) * 2004-05-12 2010-03-24 アルパイン株式会社 Navigation device and map display method
DE102004042200B4 (en) * 2004-09-01 2007-04-19 Legrand-Bticino Gmbh Astronomical timer with automatic parameterization
JP5206205B2 (en) * 2008-08-01 2013-06-12 株式会社デンソー Information processing device
JP5210251B2 (en) * 2009-06-24 2013-06-12 株式会社日立製作所 Elevator landscape video display
WO2012108031A1 (en) * 2011-02-10 2012-08-16 パイオニア株式会社 Display device, display method, and display program
JP2012188024A (en) * 2011-03-11 2012-10-04 Hitachi Information & Control Solutions Ltd On-vehicle machine having on-vehicle display device
CN110969996A (en) * 2018-09-30 2020-04-07 北京奇虎科技有限公司 Mobile terminal, method and device for adjusting brightness of display screen of mobile terminal and storage medium

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