JPH0386640A - Light adjusting device - Google Patents
Light adjusting deviceInfo
- Publication number
- JPH0386640A JPH0386640A JP1224848A JP22484889A JPH0386640A JP H0386640 A JPH0386640 A JP H0386640A JP 1224848 A JP1224848 A JP 1224848A JP 22484889 A JP22484889 A JP 22484889A JP H0386640 A JPH0386640 A JP H0386640A
- Authority
- JP
- Japan
- Prior art keywords
- display
- data
- detection
- brightness
- section
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000001514 detection method Methods 0.000 claims abstract description 32
- 230000003287 optical effect Effects 0.000 claims abstract description 8
- 230000004304 visual acuity Effects 0.000 abstract 2
- 230000008859 change Effects 0.000 description 6
- 230000004044 response Effects 0.000 description 3
- 230000003321 amplification Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000003199 nucleic acid amplification method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 235000013372 meat Nutrition 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
Landscapes
- Instrument Panels (AREA)
- Arrangements Of Lighting Devices For Vehicle Interiors, Mounting And Supporting Thereof, Circuits Therefore (AREA)
- Circuit Arrangement For Electric Light Sources In General (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は主として運転情報を車両のフロントガラス部分
に光反射表示をなす表示装置に使用される調光装置に関
するものである。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates primarily to a light control device used in a display device that displays driving information by light reflection on the windshield of a vehicle.
（従来の技術及び発明が解決しようとする課題）車速、
走行距離、燃料残量その他の運転情報はインストルメン
トパネルに設けたメータ等で表示していたが、最近ドラ
イバーがこれらの情報を見るのに前方視界から一旦目を
そらさなくてすむようにこれらの運転情報をフロントガ
ラスの部分の前方視野内に結像させ、視野内の前景と重
なるようにして視認できる所謂ヘッドアップデイスプレ
ィと称せられる表示装置が採用されている。(Problems to be solved by conventional technology and invention) Vehicle speed,
Driving information such as mileage, remaining fuel level, etc. was previously displayed on meters installed on the instrument panel, but recently drivers have changed their driving style so that they do not have to take their eyes off the road ahead to view this information. A display device called a head-up display is used, which allows information to be visually recognized by forming an image in the front field of view of the windshield so that it overlaps with the foreground within the field of view.
前記表示装置は、表示部分の背影自体の明るさが車両前
方の明るさであり、この背影の明るさの変化によって、
表示自体を視認することが困難とならないように表示輝
度を調整する調光装置を備えている（実開昭８１−４２
３３３号、特開昭６２−５０２３９号公報参照）。この
調光装置はバックミラー背面部分や、フロントガラスの
最下位置等に設置した光センサで、外部光の明るさを検
出し、′検出出力に応じて表示輝度の調整を行うように
しているものである。In the display device, the brightness of the back shadow itself of the display portion is the brightness of the front of the vehicle, and the change in the brightness of this back shadow causes
It is equipped with a light control device that adjusts the display brightness so that the display itself does not become difficult to see.
No. 333, JP-A No. 62-50239). This light control device detects the brightness of external light using a light sensor installed on the back of the rearview mirror or at the bottom of the windshield, and adjusts the display brightness according to the detected output. It is something.
具体的には光センサを備え外部光の明るさを感知する検
出部と、前記検出部の検出値に対応して所定の表示輝度
で表示されるように、表示機構の表示照明部（駆動部）
に所定の指示信号を出力する処理部と、前記の駆動部で
構成されており、処理部としては、検出値をカウント処
理する構成のものや、検出値に対応して予め定めた出力
値をメモリしたＲＯＭを備えたもの等が知られている本
発明は特に前記の肉処理部にＲＯＭを用いてなるものの
改良に関するものである。Specifically, it includes a detection section that is equipped with an optical sensor and senses the brightness of external light, and a display illumination section (drive section) of the display mechanism so that the display is displayed at a predetermined display brightness in accordance with the detection value of the detection section. )
It is composed of a processing section that outputs a predetermined instruction signal to the sensor, and the above-mentioned driving section. The present invention, which is known to be equipped with a ROM for storing memory, particularly relates to an improvement of the meat processing section using a ROM.
即ち処理部にＲＯＭを用いたものは、前述したように検
出値に対応して予め出力値を定めておき、これをメモリ
しておくものであるが、検出値の分解能に対応して駆動
指示信号も同様の分解能を与えようとすると、そのデー
タ量が膨大となりまた輝度指示信号の分解能を粗くする
と、外部の明るさと表示輝度にアンバランスが生じてし
まう。In other words, in the case where a ROM is used in the processing section, the output value is determined in advance in correspondence with the detected value as described above, and this is stored in memory. If a similar resolution is to be given to the signal, the amount of data will be enormous, and if the resolution of the brightness instruction signal is coarsened, an imbalance will occur between the external brightness and the display brightness.
（課題を解決するための手段）
本発明は前記課題を鑑み、より効果的なデータ処理を行
ったものである。(Means for Solving the Problems) In view of the above problems, the present invention performs more effective data processing.
本発明に係る調光装置は、光センサを有する検出部と、
検出部の検出値に対応して予めメモリしているデータに
基づいて所定輝度指示（１号を出力する処理部と、前記
輝度指示信号によって所定の調光動作を行う駆動部とか
らなる調光装置に於て、低照度検出時に検出値の変化に
細かく対応できるデータを前記輝度指示としてメモリさ
せ、且つ高照度検出時には徐々に検出値変化に粗く対応
するデータをメモリさせてなることを特徴とするもので
ある。A light control device according to the present invention includes a detection section having an optical sensor;
A dimming unit consisting of a processing unit that outputs a predetermined brightness instruction (No. 1) based on data stored in advance in response to the detected value of the detection unit, and a drive unit that performs a predetermined dimming operation based on the brightness instruction signal. The apparatus is characterized in that data that can finely correspond to changes in the detected value when detecting low illuminance is stored as the luminance instruction, and data that corresponds gradually and coarsely to changes in the detected value when detecting high illuminance is stored in memory. It is something to do.
（作 用）
表示光輝度の許容範囲即ち表示光輝度が明るくすぎたり
暗くすぎたりして見難くならない範囲は、最適表示光輝
度に対する数％の差異がその許容範囲であり、検出部の
出力は一般に外部光の照度に比例して出力される。前記
した本発明の輝度指示イコ号は、暗い場合に検出部出力
の僅かな変化に対応して出力され、明るい場合は検出部
出力の変化に対しては粗く対応して出力される。従って
データ量が少なくとも表示輝度はその許容範囲内に納ま
り、常に適切な調光を行うことができるものである。(Function) The permissible range of display light brightness, that is, the range in which the display light brightness is not too bright or too dark and becomes difficult to see, is a difference of several percent from the optimal display light brightness, and the output of the detection unit is Generally, it is output in proportion to the illuminance of external light. The above-mentioned brightness indicator equal sign of the present invention is output in response to a slight change in the output of the detection unit when it is dark, and is output in rough response to a change in the output of the detection unit when it is bright. Therefore, at least the data amount and display brightness are within the permissible range, and appropriate dimming can be performed at all times.
（実施例） 次に本発明の詳細な説明する。(Example) Next, the present invention will be explained in detail.
本発明が適用されるヘッドアップデイスプレィ装置と称
されている表示装置は、基本的に検出部１、処理部２２
表示部３からなり、検出部１は車速、走行距離、燃料残
量等の運転情報を得るために車両の各所に設置した各種
センサからなりセンサ検出出力を処理部２へ出力するも
のである。処理部２はＣＰＵ等で構成され、検出部の検
出出力を処理し易い信号に変更すると共に、表示すべき
情報即ち表示すべき文字２図形並びに表示輝度等の表示
部の動作を制御するものであり、表示部３は処理部２に
よってｗＡ動せしめられて表示発光をなす駆動部３１と
情報表示をなす表示用ハーフミラ−３２からなる。A display device called a head-up display device to which the present invention is applied basically includes a detection section 1 and a processing section 22.
It consists of a display section 3, and a detection section 1 is composed of various sensors installed at various locations on the vehicle to obtain driving information such as vehicle speed, mileage, remaining fuel amount, etc., and outputs sensor detection output to a processing section 2. The processing section 2 is composed of a CPU, etc., and is used to change the detection output of the detection section into a signal that is easy to process, and to control the operation of the display section, such as the information to be displayed, that is, the characters and figures to be displayed, and the display brightness. The display section 3 includes a drive section 31 that is moved wA by the processing section 2 to emit display light, and a display half mirror 32 that displays information.
而かして運転に必要な種々の情報はフロントガラスのハ
ーフミラ一部３２に表示され、運転者がこれを視認し、
所望の情報を得るものである。Various information necessary for driving is displayed on the half-mirror part 32 of the windshield, and the driver visually recognizes this.
This is to obtain the desired information.
本発明は前記のヘッドアップデイスプレィ装置に適用さ
れる表示輝度の調整を行う調光装置で、調光を行うこと
で外部光の変動があっても所定の最適コントラス）・比
を以て表示されるようにしたもので、調光装置は前記検
出部１に光センサ１１及び増幅部Ｉ２を備えさせ、この
検出部１の光センサからの入力を受けて処理部２で所定
の処理即ち処理部２にＡ−Ｄ変換部２１とＲＯＭ部２２
を備えさせ、検出部出力（外光の明るさ）と対応する表
示輝度をデータとして予めＲＯＭ部２２にメモリしてお
き、光センサ１１に基づく検出部出力が処理部２に入力
すると、メモリしたデータに基づいて表示部に輝度指示
信号を発し、所定の輝度指示信号に基づいて表示部の表
示輝度が定められるものである。The present invention is a light control device that adjusts the display brightness and is applied to the head-up display device described above, and by controlling the light, the display can be displayed with a predetermined optimum contrast ratio even if there are fluctuations in external light. In the light control device, the detection section 1 is equipped with an optical sensor 11 and an amplification section I2, and upon receiving input from the optical sensor of the detection section 1, the processing section 2 performs a predetermined process, that is, the processing section 2. A-D conversion section 21 and ROM section 22
The display brightness corresponding to the detection unit output (brightness of outside light) is stored in advance in the ROM unit 22 as data, and when the detection unit output based on the optical sensor 11 is input to the processing unit 2, the memory A brightness instruction signal is issued to the display section based on the data, and the display brightness of the display section is determined based on the predetermined brightness instruction signal.
本発明の最も特徴とするところは、前記したＲＯＭ部２
２にメモリしておくデータの書き込みに在り、概念的に
は第２図に示すグラフのように外光が暗いときは、細か
い表示輝度ＰＩ整を行い外光が明るいときは粗い表示輝
度調整を行っている。具体的には第３図の表に示す通り
、検出部の出力を外部光の明るさに比例する８ビットの
デジタル数値に変換するとすれば、Ｏ〜２，３，４，５
・３０〜３３．３４〜３６．３７〜４０・・・２０１〜
２２１．２２２〜２４４゜２４５〜２５５と云うように
各検出出力を適当な表示輝度毎に区分し、当該区分の内
の検出出力に対応する輝度指示信号は同一のものとし、
この輝度指示４３号に基づいて表示輝度を定めるもので
、外部光が暗いときは、僅かな外部光の変化に対しても
その最適表示輝度の範囲を逸脱するので、細かく調整し
、外部光が明るいときは多少の外部光の変化があったと
しても、最適表示輝度の許容範囲が広くなるので粗＜Ｆ
Ｊ整するものである。従ってより少ないデータ量で何等
支障の生じない調光を行うことができたものである。尚
本発明は予めメモリしたデータに基づいて調光動作をせ
しめるものであれば、特に前記した表示部や検出部は任
意の構成のものを採用できるものである。The most distinctive feature of the present invention is the ROM section 2 described above.
Conceptually, as shown in the graph shown in Figure 2, when the outside light is dark, fine display brightness PI adjustments are made, and when the outside light is bright, coarse display brightness adjustments are made. Is going. Specifically, as shown in the table in Figure 3, if the output of the detection unit is converted into an 8-bit digital value proportional to the brightness of external light, then O ~ 2, 3, 4, 5.
・30~33.34~36.37~40...201~
221, 222 to 244°, 245 to 255, etc., each detection output is divided into appropriate display brightness, and the brightness instruction signals corresponding to the detection outputs in the classification are the same,
The display brightness is determined based on this Brightness Instruction No. 43. When the external light is dark, even a slight change in the external light will cause the display brightness to deviate from the optimal display brightness range, so fine adjustments are made to reduce the external light. When it is bright, even if there is a slight change in external light, the allowable range of optimal display brightness becomes wider, so coarse < F
It is to be adjusted. Therefore, it was possible to perform dimming without any problem with a smaller amount of data. It should be noted that the present invention can employ any configuration particularly for the display section and the detection section as long as the dimming operation is performed based on data stored in advance.
（発明の効果）
本発明は以上のように主としてヘッドアップデイスプレ
ィ装置の表示輝度の調整を行う調光装置に在って、特に
検出出力に対応する表示輝度を予めデータとしてメモリ
しておく手段に於て、外部光が暗い場合は高い分解能で
、外部光が明るい場合は低い分解能で各々データをメモ
リさせてなるもので、より少ないデータ量での表示輝度
の調整が適切に行うこともできたものである。(Effects of the Invention) As described above, the present invention mainly resides in a light control device that adjusts display brightness of a head-up display device, and in particular, a means for storing display brightness corresponding to a detection output in advance as data. When the external light is dark, the data is stored at high resolution, and when the external light is bright, the data is stored at low resolution, making it possible to appropriately adjust the display brightness with a smaller amount of data. It is something that
第１図は本発明に係る調光装置を含んだヘッドアップデ
イスプレィ装置の簡便なブロック図、第２図は本発明の
表示輝度分解能を示すグラフ、第３図は第２図のグラフ
を表にしたものである。
１は検出部
１１ば光センサ
１２は増幅部
２は処理部
２１はＡ−Ｄ変換部
２２はＲＯＭ部
３ば表示部
３１はＷＥ動部
３２はハーフミラーFig. 1 is a simple block diagram of a head-up display device including a light control device according to the present invention, Fig. 2 is a graph showing the display brightness resolution of the present invention, and Fig. 3 is a graph showing the graph of Fig. 2. This is what I did. 1 is a detection section 11, an optical sensor 12, an amplification section 2, a processing section 21, an A-D conversion section 22, a ROM section 3, a display section 31, a WE moving section 32, a half mirror.
Claims (1)
応して予めメモリしているデータに基づいて所定輝度指
示信号を出力する処理部と、前記輝度指示信号によって
所定の調光動作を行う駆動部とからなる調光装置に於て
、低照度検出時に検出値の変化に細かく対応できるデー
タを前記輝度指示としてメモリさせ、且つ高照度検出時
には徐々に検出値変化に粗く対応するデータをメモリさ
せてなることを特徴とする調光装置。(1) A detection section having an optical sensor, a processing section that outputs a predetermined brightness instruction signal based on data stored in advance in correspondence with the detection value of the detection section, and a predetermined dimming operation based on the brightness instruction signal. In a light control device comprising a driving unit that performs A light control device characterized by having a memory.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1224848A JPH0676034B2 (en) | 1989-08-31 | 1989-08-31 | Dimmer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1224848A JPH0676034B2 (en) | 1989-08-31 | 1989-08-31 | Dimmer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0386640A true JPH0386640A (en) | 1991-04-11 |
| JPH0676034B2 JPH0676034B2 (en) | 1994-09-28 |
Family
ID=16820114
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1224848A Expired - Fee Related JPH0676034B2 (en) | 1989-08-31 | 1989-08-31 | Dimmer |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0676034B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0592122U (en) * | 1992-05-11 | 1993-12-14 | 株式会社クラウン・パッケージ | Multi-layer ball tray |
| JP2011098634A (en) * | 2009-11-05 | 2011-05-19 | Denso Corp | Head-up display device |
-
1989
- 1989-08-31 JP JP1224848A patent/JPH0676034B2/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0592122U (en) * | 1992-05-11 | 1993-12-14 | 株式会社クラウン・パッケージ | Multi-layer ball tray |
| JP2011098634A (en) * | 2009-11-05 | 2011-05-19 | Denso Corp | Head-up display device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0676034B2 (en) | 1994-09-28 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |