JPH11242733A - Power saving controller - Google Patents
Power saving controllerInfo
- Publication number
- JPH11242733A JPH11242733A JP10042380A JP4238098A JPH11242733A JP H11242733 A JPH11242733 A JP H11242733A JP 10042380 A JP10042380 A JP 10042380A JP 4238098 A JP4238098 A JP 4238098A JP H11242733 A JPH11242733 A JP H11242733A
- Authority
- JP
- Japan
- Prior art keywords
- image
- face image
- saving control
- power saving
- power
- 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.)
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- Image Processing (AREA)
- Controls And Circuits For Display Device (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、消費電力を省電力
制御を行う装置に関する。The present invention relates to an apparatus for performing power saving control on power consumption.
【０００２】[0002]
【従来の技術】従来より、コンピュータ用ディスプレイ
装置等の消費電力の省電力化技術として、センサを用い
てディスプレイの前に人がいるか否かを検出し、いない
場合にディスプレイの電源をオフすることにより省電力
化する技術が特開平７−４４１４４号公報等に開示され
ている。2. Description of the Related Art Conventionally, as a technique for saving power consumption of a display device for a computer or the like, a sensor is used to detect whether a person is in front of a display, and if not, the display is turned off. For example, Japanese Patent Application Laid-Open No. 7-44144 discloses a technique for saving power.
【０００３】[0003]
【発明が解決しようとする課題】しかし、従来の技術で
は、ディスプレイの前に人がいる場合には、常に電源は
オン状態のままであり、その間は無駄な電力が消費され
るという問題点があった。本発明は、斯かる問題点に鑑
みてなされたものであり、顔認識に基づき省電力制御を
行う省電力制御装置を提供するものである。However, in the prior art, when a person is in front of the display, the power is always kept on, and during that time, useless power is consumed. there were. The present invention has been made in view of such a problem, and provides a power saving control device that performs power saving control based on face recognition.
【０００４】[0004]
【課題を解決するための手段】本発明の請求項１では、
所定の範囲を撮像する撮像手段と、該撮像手段により撮
像された画像から顔画像を検出する顔画像検出手段と、
該顔画像検出手段により検出された顔画像に基づき省電
力制御を行う省電力制御手段とを備えたことを特徴とす
る。According to claim 1 of the present invention,
Image capturing means for capturing an image of a predetermined range; face image detecting means for detecting a face image from an image captured by the image capturing means;
Power saving control means for performing power saving control based on the face image detected by the face image detection means.
【０００５】又、請求項２では、所定の範囲を撮像する
撮像手段と、該撮像手段により撮像された画像から顔画
像を検出する顔画像検出手段と、該顔画像検出手段によ
り顔画像が検出されない間省電力制御を行う省電力制御
手段とを備えたことを特徴とする。又、請求項３では、
所定の範囲を撮像する撮像手段と、該撮像手段により撮
像された画像から顔画像を検出する顔画像検出手段と、
該顔画像検出手段により顔画像が検出されなくなると省
電力制御を開始する省電力制御手段とを備えたことを特
徴とする。According to a second aspect of the present invention, an image pickup means for picking up an image of a predetermined area, a face image detection means for detecting a face image from an image picked up by the image pickup means, and a face image detected by the face image detection means. And a power saving control unit that performs power saving control while the operation is not performed. In claim 3,
Image capturing means for capturing an image of a predetermined range; face image detecting means for detecting a face image from an image captured by the image capturing means;
Power saving control means for starting power saving control when no face image is detected by the face image detecting means.
【０００６】又、請求項４では、所定の範囲を撮像する
撮像手段と、該撮像手段により撮像された画像から顔画
像を検出する顔画像検出手段と、該顔画像検出手段によ
り所定時間以上顔画像が検出されなくなると省電力制御
を開始する省電力制御手段とを備えたことを特徴とす
る。又、請求項５では、請求項３又は請求項４に於い
て、前記省電力制御手段は、前記省電力制御を行った
後、顔画像が検出されると前記省電力制御を停止するこ
とを特徴とする。According to a fourth aspect of the present invention, there is provided an image pickup means for picking up an image of a predetermined area, a face image detecting means for detecting a face image from an image picked up by the image pickup means, and a face image detecting means for detecting a face image for a predetermined time or more. Power saving control means for starting power saving control when no image is detected. According to a fifth aspect, in the third or fourth aspect, the power-saving control unit performs the power-saving control, and then stops the power-saving control when a face image is detected. Features.
【０００７】又、請求項６では、所定の範囲を撮像する
撮像手段と、該撮像手段により撮像された画像から顔の
特徴点を抽出し特定ユーザの顔画像を検出する顔画像検
出手段と、該顔画像検出手段により特定ユーザの顔画像
が検出されない間省電力制御を行う省電力制御手段とを
備えたことを特徴とする。又、請求項７では、所定の範
囲を撮像する撮像手段と、該撮像手段により撮像された
画像から顔の特徴点を抽出し特定ユーザの顔画像を検出
する顔画像検出手段と、該顔画像検出手段により特定ユ
ーザの顔画像が検出されなくなると省電力制御を開始す
る省電力制御手段とを備えたことを特徴とする。According to a sixth aspect of the present invention, there is provided an image capturing means for capturing an image of a predetermined area, a face image detecting means for extracting a feature point of a face from an image captured by the image capturing means and detecting a face image of a specific user, Power saving control means for performing power saving control while the face image of the specific user is not detected by the face image detecting means. Further, according to claim 7, an image pickup means for picking up an image of a predetermined range, a face image detecting means for extracting a feature point of a face from an image picked up by the image pickup means and detecting a face image of a specific user, Power saving control means for starting power saving control when the face image of the specific user is no longer detected by the detection means.
【０００８】又、請求項８では、所定の範囲を撮像する
撮像手段と、該撮像手段により撮像された画像から顔の
特徴点を抽出し特定ユーザの顔画像を検出する顔画像検
出手段と、該顔画像検出手段により所定時間以上特定ユ
ーザの顔画像が検出されなくなると省電力制御を開始す
る省電力制御手段とを備えたことを特徴とする。又、請
求項９では、請求項７又は請求項８に於いて、前記省電
力制御手段は、前記省電力制御を行った後、特定ユーザ
の顔画像が検出されると前記省電力制御を停止すること
を特徴とする。According to another aspect of the present invention, there is provided an image capturing means for capturing an image of a predetermined area, a face image detecting means for extracting a feature point of a face from an image captured by the image capturing means and detecting a face image of a specific user. Power saving control means for starting power saving control when the face image of the specific user is not detected for a predetermined time or more by the face image detecting means. According to a ninth aspect, in the seventh or eighth aspect, the power saving control unit stops the power saving control when a face image of a specific user is detected after performing the power saving control. It is characterized by doing.
【０００９】又、請求項１０では、請求項１乃至請求項
９のいずれかに於いて、表示手段を備え、前記省電力制
御は、前記表示手段の電源をオフすることを特徴とす
る。又、請求項１１では、請求項１０に於いて、前記表
示手段は、ディスプレイであることを特徴とする。According to a tenth aspect of the present invention, in any one of the first to ninth aspects, a display means is provided, and the power saving control is performed by turning off a power supply of the display means. An eleventh aspect is characterized in that, in the tenth aspect, the display means is a display.
【００１０】[0010]
【発明の実施の形態】本発明の実施の形態を図を用いて
説明する。まず第１の実施の形態について説明する。本
発明の省電力制御装置Ｐは、図１に示されるように構成
され、カラーＣＣＤカメラ等からなるカメラ１０と、顔
の画像認識処理を行う顔画像認識部１２と、表示制御部
１４と、ＣＲＴディスプレイやＬＣＤ、プラズマディス
プレイ等からなる表示部１６とを有している。DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described with reference to the drawings. First, a first embodiment will be described. The power-saving control device P of the present invention is configured as shown in FIG. 1 and includes a camera 10 including a color CCD camera, a face image recognition unit 12 for performing face image recognition processing, a display control unit 14, A display unit 16 including a CRT display, an LCD, a plasma display, and the like.
【００１１】カメラ１０は、表示部１６を中心とした所
定距離範囲を撮像するように設置されている。顔画像認
識部１２は、上記カメラ１０により得られた画像データ
に人間（ユーザ甲）の顔があるか否かを検出するもので
ある。この顔画像の検出及び認識の方法は、公知の方法
を用いるものとする。例えば、人間の顔部分を撮像して
得た画像データに対して特徴点を抽出し処理を行い、そ
れぞれについて特徴抽出しパターンマッチングを行い、
人間の顔であるかを検出する技術（例えば特開平５−２
２５３４４号公報）等がある。この顔画像検出部１２
は、実際には顔の画像検出を行うためのプログラムを格
納した記憶部と該プログラムに従い所定の処理を行うＣ
ＰＵ等から構成される。The camera 10 is installed so as to capture an image of a predetermined distance range around the display unit 16. The face image recognition unit 12 detects whether or not the image data obtained by the camera 10 includes a human (user A) face. As a method of detecting and recognizing the face image, a known method is used. For example, feature points are extracted and processed for image data obtained by imaging a human face portion, and feature extraction and pattern matching are performed for each,
Techniques for detecting whether the face is a human face (for example,
No. 25344). This face image detection unit 12
Is a storage unit in which a program for actually performing face image detection is stored, and C which performs a predetermined process in accordance with the program
It is composed of PU and the like.
【００１２】表示制御部１４は、図示しないビデオメモ
リに記録された画像等を表示部１６に表示制御するする
ものである。この表示制御部１４は、顔画像検出部１２
の情報に基づき、表示部１６の電源のオン・オフ制御や
表示部１６のコントラストの制御等も行う。又、表示部
１６がＬＣＤの場合は、バックライトのオン・オフ制御
も行う。The display control unit 14 controls the display of images and the like recorded in a video memory (not shown) on the display unit 16. The display control unit 14 includes the face image detection unit 12
Based on this information, on / off control of the power of the display unit 16 and control of the contrast of the display unit 16 are also performed. When the display unit 16 is an LCD, on / off control of the backlight is also performed.
【００１３】上記構成の省電力制御装置の動作について
図１乃至図３を用いて説明する。まずステップＳ１に於
いて、省電力制御装置Ｐはカメラ１０から所定範囲の撮
像画像を撮像し、顔画像検出部１２により顔画像を検出
し、ステップＳ２に進む。ステップＳ２に於いて、Ｓ１
にてカメラ１０からの所定範囲内にユーザの顔画像があ
るか否かを判断する。顔画像があると判断した場合、つ
まりユーザが表示部１６を見ているステップＳ１に戻り
顔画像を検出処理を行う。一方、顔画像がないと判断し
た場合、ステップＳ３に進む。尚、本実施の形態では、
カメラ１０から所定範囲は３０ｃｍ程度とし、ユーザが
表示部１６に表示される表示内容を認視できる程度の距
離とするが、この設定は任意変更可能である。The operation of the power saving control device having the above configuration will be described with reference to FIGS. First, in step S1, the power saving control device P captures a captured image of a predetermined range from the camera 10, detects a face image by the face image detection unit 12, and proceeds to step S2. In step S2, S1
It is determined whether or not there is a user's face image within a predetermined range from the camera 10. When it is determined that there is a face image, that is, the process returns to step S1 in which the user is viewing the display unit 16, and the face image is detected. On the other hand, if it is determined that there is no face image, the process proceeds to step S3. In the present embodiment,
The predetermined range from the camera 10 is about 30 cm, and the distance is such that the user can visually recognize the display contents displayed on the display unit 16, but this setting can be arbitrarily changed.
【００１４】ステップＳ３に於いて、ユーザの顔が検出
できない時間をカウントし、所定時間が経過したか否か
を判断する。所定時間内であると判断した場合、ステッ
プＳ１に戻り顔画像の検出を行う。尚、この時間カウン
トは、ステップＳ２に於いて、所定範囲内にユーザの顔
画像があると判断した場合に時間カウントが停止し時間
カウント数がリセットされる。一方、所定時間経過であ
ると判断した場合、ステップＳ４に進み、省電力制御処
理を行う。尚、本実施の形態では所定時間を１０秒程度
とするが、この所定時間は任意変更可能である。In step S3, the time during which the user's face cannot be detected is counted, and it is determined whether a predetermined time has elapsed. If it is determined that the time is within the predetermined time, the process returns to step S1 to detect a face image. This time count is stopped when the face image of the user is determined to be within the predetermined range in step S2, and the time count is reset. On the other hand, if it is determined that the predetermined time has elapsed, the process proceeds to step S4, and power saving control processing is performed. In this embodiment, the predetermined time is about 10 seconds, but the predetermined time can be arbitrarily changed.
【００１５】ステップＳ４に於いて、ユーザの顔画像が
表示部１６の所定範囲内に検出されない、つまりユーザ
が画面を見ていないと判断できるので、画面表示する必
要がなく、表示制御部１４は、表示部１６の電源をオフ
状態することにより省電力化を図り、ステップＳ５に進
む。又、表示部１６のコントラストを落としたり、映像
出力を停止すことにより省電力化を図る様にしても良
い。更に、表示部１６がＬＣＤの場合には、バックライ
トをオフ状態することにより省電力化を図る様にしても
良い。In step S4, since the face image of the user is not detected within the predetermined range of the display unit 16, that is, it can be determined that the user is not looking at the screen, there is no need to display the screen, and the display control unit 14 The power of the display unit 16 is turned off to save power, and the process proceeds to step S5. Further, the power consumption may be reduced by lowering the contrast of the display unit 16 or stopping the video output. Further, when the display unit 16 is an LCD, the backlight may be turned off to save power.
【００１６】ステップＳ５に於いて、ステップＳ１と同
様に顔画像を検出を行い、ステップＳ６に進む。ステッ
プＳ６に於いて、ステップＳ２と同様にＳ５にて所定範
囲内にユーザの顔画像があるか否かを判断する。顔画像
があない判断した場合、ステップＳ５に戻り顔画像の検
出を行う。一方、顔画像があると判断した場合、つまり
ユーザが表示部１６を見ていると判断した場合、ステッ
プＳ７に進み省電力制御を停止する。In step S5, a face image is detected as in step S1, and the process proceeds to step S6. In step S6, similarly to step S2, it is determined in step S5 whether or not there is a user's face image within a predetermined range. If it is determined that there is no face image, the process returns to step S5 to detect the face image. On the other hand, if it is determined that there is a face image, that is, if it is determined that the user is looking at the display unit 16, the process proceeds to step S7, and the power saving control is stopped.
【００１７】ステップＳ７に於いて、表示制御部１４は
ステップＳ４にて省電力制御されたものを元の状態に戻
し、ステップＳ１に戻る。つまり、ステップＳ４にて表
示部１６の電源をオフ状態した場合には電源をオン状態
に戻し、表示部１６のコントラストを落とした場合には
コントラストを元の状態に戻し、表示部１６の映像出力
が停止された場合には映像出力を元の状態に戻し、表示
部１６がＬＣＤの時にバックライトをオフ状態にした場
合にはバックライトをオン状態に戻す。In step S7, the display control unit 14 returns the power-controlled one in step S4 to its original state, and returns to step S1. That is, when the power of the display unit 16 is turned off in step S4, the power is turned back on, and when the contrast of the display unit 16 is lowered, the contrast is returned to the original state. Is stopped, the video output is returned to the original state, and when the backlight is turned off when the display unit 16 is the LCD, the backlight is returned to the on state.
【００１８】以上の処理により、ユーザが表示部１６を
見ていないと判断できる場合に省電力化が図られるた
め、こまめな節電ができ、消費電力を抑えることができ
る。尚、本実施の形態では、上記のように顔画像検出を
カメラ１０と顔画像検出部１２とにより構成するものと
して説明したが、これに限ることはなく、人物の顔画像
が検出できるものであれば他の構成としてもよい。According to the above processing, power can be saved when it can be determined that the user is not looking at the display unit 16, so that frequent power saving can be achieved and power consumption can be suppressed. In the present embodiment, the face image detection is described as being configured by the camera 10 and the face image detection unit 12 as described above. However, the present invention is not limited to this, and a face image of a person can be detected. If so, another configuration may be used.
【００１９】又、本実施の形態では、顔画像検出部１２
及びステップＳ２及びステップＳ６で顔があるか否かを
検出しているが、顔の特徴点を予め顔画像検出部１２内
の記憶部（図示せず）に記憶しておき、顔画像検出部１
２及びステップＳ２及びステップＳ６の顔画像検出の際
に、取り込んだ顔の特徴点を抽出する様にし、予め記憶
しておいた顔の特徴点と比較することにより、特定のユ
ーザの場合にのみ省電力制御処理を行う様にしてもよ
い。In the present embodiment, the face image detecting unit 12
In step S2 and step S6, it is detected whether or not there is a face. Feature points of the face are stored in advance in a storage unit (not shown) in the face image detection unit 12, and the face image detection unit 1
2 and at step S2 and step S6, the feature points of the captured face are extracted and compared with the face feature points stored in advance, so that only for a specific user. Power saving control processing may be performed.
【００２０】[0020]
【発明の効果】本発明を用いると、ユーザの顔が検出さ
れない時、つまりユーザが表示部を所定時間以上見てい
ないと判断できる場合に省電力化が図られるため、こま
めな節電ができ、消費電力を抑えることができる。特に
ディプレイは電力消費量が大きく、実際にディスプイを
見ている時間は短く、見ていない間の無駄な電力消費を
抑えることができ、省エネルギー効果が顕著に現れる。According to the present invention, when a user's face is not detected, that is, when it can be determined that the user has not looked at the display unit for a predetermined time or more, power saving is achieved. Power consumption can be reduced. In particular, the display consumes a large amount of power, and the time during which the user is actually watching the display is short, so that unnecessary power consumption during the time when the display is not being viewed can be suppressed, and the energy saving effect is remarkably exhibited.
【００２１】又、ユーザの顔の検出に基づいて省電力制
御されるため、ユーザは表示部が消えている等の省電力
制御に気づくことなく、ユーザの作業に支障をきたすこ
となく消費電力を抑えることができる。又、特定ユーザ
の顔の検出が行えるため、ユーザ毎に省電力制御が行え
る。更に、携帯情報端末に用いると、省電力化が図られ
るため、携帯情報端末の動作可能時間が長くなり使用し
易くなる。Further, since the power saving control is performed based on the detection of the user's face, the user does not notice the power saving control such as the disappearance of the display unit, and can reduce the power consumption without hindering the user's work. Can be suppressed. In addition, since the face of a specific user can be detected, power saving control can be performed for each user. Furthermore, when used for a portable information terminal, power saving is achieved, so that the operable time of the portable information terminal becomes longer and the portable information terminal becomes easier to use.
【図１】本発明の省電力制御を行う装置の実施の形態を
示す機能ブロック図である。FIG. 1 is a functional block diagram showing an embodiment of an apparatus for performing power saving control according to the present invention.
【図２】本発明の省電力制御を行う装置の一実施の形態
を示す図である。FIG. 2 is a diagram showing an embodiment of an apparatus for performing power saving control according to the present invention.
【図３】本発明の省電力制御処理の実施の形態を示すフ
ローチャートである。FIG. 3 is a flowchart illustrating an embodiment of a power saving control process according to the present invention.
１０ カメラ １２ 顔画像出部 １４ 表示制御部 １６ 表示部 Reference Signs List 10 camera 12 face image output unit 14 display control unit 16 display unit
Claims (11)
顔画像検出手段と、 該顔画像検出手段により検出された顔画像に基づき省電
力制御を行う省電力制御手段とを備えたことを特徴とす
る省電力制御装置。1. An image pickup means for picking up an image of a predetermined range, a face image detection means for detecting a face image from an image picked up by the image pickup means, and power saving based on the face image detected by the face image detection means. A power saving control device comprising: power saving control means for performing control.
顔画像検出手段と、 該顔画像検出手段により顔画像が検出されない間省電力
制御を行う省電力制御手段とを備えたことを特徴とする
省電力制御装置。2. An image pickup means for picking up an image of a predetermined range, a face image detection means for detecting a face image from an image picked up by the image pickup means, and power saving control while no face image is detected by the face image detection means. And a power-saving control unit for performing the power-saving control.
顔画像検出手段と、 該顔画像検出手段により顔画像が検出されなくなると省
電力制御を開始する省電力制御手段とを備えたことを特
徴とする省電力制御装置。3. An image pickup means for picking up an image of a predetermined area, a face image detection means for detecting a face image from an image picked up by the image pickup means, and power saving when no face image is detected by the face image detection means. A power saving control device comprising: power saving control means for starting control.
顔画像検出手段と、 該顔画像検出手段により所定時間以上顔画像が検出され
なくなると省電力制御を開始する省電力制御手段とを備
えたことを特徴とする省電力制御装置。4. An image pickup means for picking up an image of a predetermined range, a face image detection means for detecting a face image from an image picked up by the image pickup means, and no face image is detected by the face image detection means for a predetermined time or more. And a power saving control means for starting power saving control.
画像が検出されると前記省電力制御を停止することを特
徴とする省電力制御装置。5. The power saving control unit according to claim 3, wherein the power saving control means stops the power saving control when a face image is detected after performing the power saving control. Power saving control device.
し特定ユーザの顔画像を検出する顔画像検出手段と、 該顔画像検出手段により特定ユーザの顔画像が検出され
ない間省電力制御を行う省電力制御手段とを備えたこと
を特徴とする省電力制御装置。6. An image capturing means for capturing an image of a predetermined range, a face image detecting means for extracting a feature point of a face from an image captured by the image capturing means and detecting a face image of a specific user, and the face image detecting means And a power-saving control unit that performs power-saving control while a face image of a specific user is not detected.
し特定ユーザの顔画像を検出する顔画像検出手段と、 該顔画像検出手段により特定ユーザの顔画像が検出され
なくなると省電力制御を開始する省電力制御手段とを備
えたことを特徴とする省電力制御装置。7. An image pickup means for picking up an image of a predetermined range, a face image detecting means for extracting a feature point of a face from an image picked up by the image pickup means and detecting a face image of a specific user, and the face image detecting means And a power saving control unit that starts power saving control when the face image of the specific user is no longer detected.
し特定ユーザの顔画像を検出する顔画像検出手段と、 該顔画像検出手段により所定時間以上特定ユーザの顔画
像が検出されなくなると省電力制御を開始する省電力制
御手段とを備えたことを特徴とする省電力制御装置。8. An image pickup means for picking up an image of a predetermined area, a face image detection means for extracting a feature point of a face from an image picked up by the image pickup means and detecting a face image of a specific user, and the face image detection means A power-saving control unit that starts power-saving control when a face image of a specific user is not detected for a predetermined time or more.
定ユーザの顔画像が検出されると前記省電力制御を停止
することを特徴とする省電力制御装置。9. The power saving control unit according to claim 7, wherein the power saving control means stops the power saving control when a face image of a specific user is detected after performing the power saving control. A power saving control device characterized by the above-mentioned.
いて、 表示手段を備え、 前記省電力制御は、前記表示手段の電源をオフすること
を特徴とする省電力制御装置。10. The power saving control device according to claim 1, further comprising a display unit, wherein the power saving control turns off a power supply of the display unit.
省電力制御装置。11. The power saving control device according to claim 10, wherein the display means is a display.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10042380A JPH11242733A (en) | 1998-02-24 | 1998-02-24 | Power saving controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10042380A JPH11242733A (en) | 1998-02-24 | 1998-02-24 | Power saving controller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH11242733A true JPH11242733A (en) | 1999-09-07 |
Family
ID=12634462
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10042380A Pending JPH11242733A (en) | 1998-02-24 | 1998-02-24 | Power saving controller |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH11242733A (en) |
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