JPH04317286A - Television telephone set - Google Patents

Television telephone set

Info

Publication number
JPH04317286A
JPH04317286A JP3085383A JP8538391A JPH04317286A JP H04317286 A JPH04317286 A JP H04317286A JP 3085383 A JP3085383 A JP 3085383A JP 8538391 A JP8538391 A JP 8538391A JP H04317286 A JPH04317286 A JP H04317286A
Authority
JP
Japan
Prior art keywords
liquid crystal
crystal display
beam splitter
screen
display element
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.)
Pending
Application number
JP3085383A
Other languages
Japanese (ja)
Inventor
Kenji Sano
健二 佐野
Kohei Suzuki
公平 鈴木
Yuji Ide
井手 祐二
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toshiba Corp
Original Assignee
Toshiba Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Toshiba Corp filed Critical Toshiba Corp
Priority to JP3085383A priority Critical patent/JPH04317286A/en
Publication of JPH04317286A publication Critical patent/JPH04317286A/en
Pending legal-status Critical Current

Links

Landscapes

  • Liquid Crystal (AREA)

Abstract

PURPOSE:To provide a television telephone set permitting the size to be reduced by means of a liquid crystal display element, speaker's eyes to be met and a bright display screen to be obtained. CONSTITUTION:A liquid crystal display element, an optical system arranged in front of the screen of the liquid crystal display element and consisting of a polarized light beam splitter 3 or a dichroic beam splitter and an image pickup device photographing the reflection light from the optical system, are provided.

Description

【発明の詳細な説明】[Detailed description of the invention]

【0001】0001

【産業上の利用分野】本発明は液晶表示素子を用いたテ
レビ電話に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a videophone using a liquid crystal display element.

【0002】0002

【従来の技術】従来のテレビ電話では、通話者を撮影す
る装置がテレビ画面の周辺の配置されていた。このため
、通話者は撮影装置を直視しないかぎり、自分自身の視
線と相手の視線とを合わせることができなかった。この
状態では、通話者は相手と直接会話している実感がない
ため、意思疎通が不十分になるという欠点があった。
2. Description of the Related Art In conventional videophones, a device for photographing the person making the call was placed around the television screen. For this reason, the caller could not align his or her own line of sight with the line of sight of the other party unless he or she looked directly at the photographing device. In this state, the caller does not feel that he or she is having a direct conversation with the other party, resulting in insufficient communication.

【0003】このような問題を解決したテレビ電話が、
例えば特開昭61−65683号公報に開示されている
。このテレビ電話は、通話者とテレビ画面との間にハー
フミラーを配置し、ハーフミラーによる通話者像の反射
光の光軸方向に撮像装置を配置したものである。このテ
レビ電話では、通話者の視線と、テレビ画面に表示され
ハーフミラーを透過する通話相手の視線とを一致させる
ことができ、かつハーフミラーによる通話者像の反射光
の光軸方向に配置された撮像装置により、通話者が撮像
装置を直視する像を撮像できる。
[0003] A videophone that solved these problems was
For example, it is disclosed in Japanese Patent Application Laid-Open No. 61-65683. In this videophone, a half mirror is arranged between a caller and a television screen, and an imaging device is arranged in the optical axis direction of the light reflected from the half mirror as an image of the caller. With this videophone, the line of sight of the caller can be aligned with the line of sight of the other party, which is displayed on the TV screen and transmitted through the half mirror, and is arranged in the optical axis direction of the reflected light of the image of the caller by the half mirror. The image capturing device can capture an image of the person making the call looking directly at the image capturing device.

【0004】一方、今後のテレビ電話の小形化を考える
と、テレビ画面として液晶表示素子を用いることが考え
られる。しかし、液晶表示素子を用い、かつ特開昭61
−65683号公報のように通話者とテレビ画面との間
にハーフミラーを配置した場合、十分な明るさの画面を
得ることが困難であるという問題がある。
On the other hand, considering the future miniaturization of videophones, it is conceivable to use a liquid crystal display element as the television screen. However, using a liquid crystal display element and JP-A-61
When a half mirror is placed between the caller and the television screen as in Japanese Patent No. 65683, there is a problem in that it is difficult to obtain a screen with sufficient brightness.

【0005】[0005]

【発明が解決しようとする課題】本発明の目的は、液晶
表示素子を用いて小形化することができ、通話者間で視
線を一致させることができ、かつ明るい表示画面を得る
ことができるテレビ電話を提供することにある。
SUMMARY OF THE INVENTION It is an object of the present invention to provide a television that can be miniaturized using a liquid crystal display element, that allows the parties to communicate in line of sight, and that can provide a bright display screen. The purpose is to provide telephones.

【0006】[0006]

【課題を解決するための手段と作用】本発明のテレビ電
話は、液晶表示素子と、液晶表示素子の画面の前面に配
置された偏光ビームスプリッタ又はダイクロイックビー
ムスプリッタからなる光学系と、光学系からの反射光を
撮影する撮像装置とを具備したことを特徴とするもので
ある。
[Means and Effects for Solving the Problems] The videophone of the present invention includes a liquid crystal display element, an optical system consisting of a polarizing beam splitter or a dichroic beam splitter arranged in front of the screen of the liquid crystal display element, and an optical system comprising: The invention is characterized in that it includes an imaging device that photographs the reflected light.

【0007】本発明において、各構成部材は、内側が非
反射性表面を有する黒色の筐体内に設置することが好ま
しい。これは、液晶表示素子からの光が筐体内部で反射
して撮像素子に入射し、ノイズ像になることを防止する
ためである。
[0007] In the present invention, each component is preferably installed in a black housing having a non-reflective surface on the inside. This is to prevent light from the liquid crystal display element from being reflected inside the casing and entering the image sensor, resulting in a noise image.

【0008】本発明において、光学系としては、偏光ビ
ームスプリッタ又はダイクロイックビームスプリッタが
用いられる。偏光ビームスプリッタを用いた場合には、
偏光をほぼ100%透過できるため、通常の非偏光性ハ
ーフミラー(透過率約50%)の約2倍の明るさにする
ことができる。この場合、液晶表示素子側には検光子と
しての偏光板を設ける必要がない。ダイクロイックビー
ムスプリッタは、2色分解性の1種のハーフミラーであ
り、例えば撮像素子を近赤外で用いるなど撮像素子の検
出波長帯域と液晶表示素子の表示波長帯域とを異ならせ
れば、液晶表示素子からの光の強さが減少することがな
いので、通常のハーフミラーの2倍の明るさにできる。 また、赤外光(近赤外光)を撮像すれば、複雑な画像認
識の必要なしに、周囲より温度が高い顔の中心を容易に
検出できる。
In the present invention, a polarizing beam splitter or a dichroic beam splitter is used as the optical system. When using a polarizing beam splitter,
Since it can transmit almost 100% of polarized light, it can be about twice as bright as a normal non-polarizing half mirror (transmittance of about 50%). In this case, there is no need to provide a polarizing plate as an analyzer on the liquid crystal display element side. A dichroic beam splitter is a type of half mirror that can separate two colors, and if the detection wavelength band of the image sensor is different from the display wavelength band of the liquid crystal display element, for example by using an image sensor in near-infrared light, it can be used for liquid crystal display. Since the intensity of light from the element does not decrease, it can be twice as bright as a normal half mirror. Furthermore, by capturing an image using infrared light (near-infrared light), the center of the face, which has a higher temperature than the surrounding area, can be easily detected without the need for complex image recognition.

【0009】本発明において、撮像素子としては、CC
Dを用いることが好ましい。CCDは、価格、小形化と
いう点で他の撮像素子よりも優れている。なお、撮像素
子による通話者自身の撮像状態がモニターできるように
、表示画面の一部に通話者の像をスーパーインポーズす
るようにしてもよい。
[0009] In the present invention, the image sensor is a CC
It is preferable to use D. CCDs are superior to other imaging devices in terms of cost and miniaturization. It should be noted that an image of the caller may be superimposed on a part of the display screen so that the imaging state of the caller himself by the image sensor can be monitored.

【0010】本発明において、明るい画面を得るために
は、通話者を照らす照明を設けることが好ましい。照明
としては、白熱電球、ハロゲンランプ、蛍光灯、ELな
ど種々のものを用いることができる。
In the present invention, in order to obtain a bright screen, it is preferable to provide lighting to illuminate the person making the call. Various types of lighting can be used, such as an incandescent lamp, a halogen lamp, a fluorescent lamp, and an EL lamp.

【0011】本発明のテレビ電話は液晶表示素子を用い
ているので、小形化できる。このテレビ電話では、通話
者の視線と、テレビ画面に表示され偏光ビームスプリッ
タ又はダイクロイックビームスプリッタからなる光学系
を透過する通話相手の視線とを一致させることができ、
かつ光学系による通話者像の反射光の光軸方向に配置さ
れた撮像装置により、通話者が撮像装置を直視する像を
撮像できる。また、光学系として偏光ビームスプリッタ
又はダイクロイックビームスプリッタを用いているので
、通常のハーフミラーを用いた場合よりも明るい画面が
得られる。
Since the videophone of the present invention uses a liquid crystal display element, it can be made smaller. In this videophone, the line of sight of the caller can be matched with the line of sight of the other party, who is displayed on the TV screen and passes through an optical system consisting of a polarizing beam splitter or a dichroic beam splitter.
In addition, the image pickup device disposed in the optical axis direction of the light reflected from the image of the caller by the optical system can capture an image of the caller looking directly at the image pickup device. Furthermore, since a polarizing beam splitter or a dichroic beam splitter is used as the optical system, a brighter screen can be obtained than when a normal half mirror is used.

【0012】このような効果を得るためには、光学系に
対する撮像素子の位置を最適に設定する必要がある。ま
た、テレビ電話全体は通話者に対して上下左右に自由に
向きを変えられることが好ましい。更に、テレビ電話全
体が通話者の位置を自動追尾し、自動的に通話者に対し
て上下左右に向きを変えられることが好ましい。この場
合、自動追尾の方法は、赤外線センサー、超音波センサ
ーなどを用いることが好ましい。
[0012] In order to obtain such an effect, it is necessary to optimally set the position of the image sensor with respect to the optical system. Further, it is preferable that the entire videophone can be freely turned up, down, left and right with respect to the caller. Furthermore, it is preferable that the entire videophone automatically track the location of the caller and automatically change its orientation up, down, left and right with respect to the caller. In this case, the automatic tracking method preferably uses an infrared sensor, an ultrasonic sensor, or the like.

【0013】[0013]

【実施例】以下、本発明の実施例を図面を参照して説明
する。 実施例1
Embodiments Hereinafter, embodiments of the present invention will be described with reference to the drawings. Example 1

【0014】ABS樹脂製の筐体1の内部に黒色のモー
ル紙をはり、その内部に4インチ液晶カラーテレビ2(
株式会社東芝製、商品名LZ−400D)を配置した。 液晶テレビ2の画面から筐体1の開口部までの距離は2
00mmとした。この筐体1の中央部に、液晶テレビ1
の画面との角度を変えられるように、偏光ビームスプリ
ッター3を配置した。筐体1の底部に、偏光ビームスプ
リッター3からの光に応じて位置を変えられるように、
CCDカメラ4を配置した。筐体1の上部に通話者を照
らし出す10Wの蛍光灯5を配置した。筐体1の下部に
マイクロフォンとスピーカ6を設けた。筐体1の前面に
ガラスのカバーを取り付けた。
[0014] A black molding paper is pasted inside the ABS resin casing 1, and a 4-inch LCD color television 2 (
(manufactured by Toshiba Corporation, trade name: LZ-400D) was placed. The distance from the screen of LCD TV 2 to the opening of housing 1 is 2
00mm. In the center of this housing 1, there is an LCD TV 1.
The polarizing beam splitter 3 was arranged so that the angle with respect to the screen could be changed. At the bottom of the casing 1, there is a light source that can change its position depending on the light from the polarizing beam splitter 3.
A CCD camera 4 was installed. A 10W fluorescent lamp 5 is placed on the top of the housing 1 to illuminate the caller. A microphone and a speaker 6 are provided at the bottom of the housing 1. A glass cover was attached to the front of the housing 1.

【0015】前記と同じ構成のセットをもう1台作製し
、互いに液晶テレビ2とCCDカメラ4とを接続した。 もう1台のセットの筐体1の下部にマイクロフォンとス
ピーカとして東芝製ドアホン子機HTU−Dを設け、互
いに通話できるようにした。
Another set having the same configuration as above was manufactured, and a liquid crystal television 2 and a CCD camera 4 were connected to each other. A Toshiba door intercom handset HTU-D was installed as a microphone and speaker at the bottom of the housing 1 of the other set, so that they could talk to each other.

【0016】このようなシステムで、室内の明るさが筐
体1の上部で0〜10000ルクスとなるように調整し
ながら、通話の状態を検討した。この結果、相手の視線
を見ながら自然な会話ができた。室内の明るさが100
ルクス以下のときに、蛍光灯5を点灯したが、特に眩し
くはなく、液晶表示画面を見るのに不都合はなかった。 また、照明を点灯した結果、相手側では良好な画像を見
ることができた。 実施例2
Using such a system, the call conditions were examined while adjusting the brightness in the room to be 0 to 10,000 lux at the top of the housing 1. As a result, I was able to have a natural conversation while looking at the other person's gaze. Indoor brightness is 100
Although the fluorescent lamp 5 was turned on when the light was below lux, it was not particularly dazzling and there was no inconvenience in viewing the liquid crystal display screen. Also, as a result of turning on the lights, the other party was able to see a good image. Example 2

【0017】筐体1全体を上下左右に角度を変えられる
2軸可動部を有する可動台7上に載せた。この結果、通
話者はテレビ画面が見やすくなるように自由に筐体1の
角度を調整することができた。 実施例3
The entire casing 1 was placed on a movable table 7 having a two-axis movable part that can change the angle vertically and horizontally. As a result, the caller was able to freely adjust the angle of the housing 1 so that the TV screen could be easily viewed. Example 3

【0018】筐体1全体を上下左右に角度を変えられる
2軸可動部を有する可動台7上に載せ、その軸をモータ
で回転できるようにギヤと組み合わせ、東芝製コンピュ
ータJ−3100を中心として超音波センサで人間の顔
の位置を追尾するシステムを構成した。この際、超音波
センサの焦点の範囲を狭くし、筐体1から200mmの
距離にある直径100mmの円盤で反射する超音波の大
きさが最大になるように筐体1が動くようにした。この
ようなシステムを使用すれば、相手の視線を見ながら、
通話者が筐体1の回りで180度移動しても自然に会話
できることが確認できた。
The entire housing 1 is placed on a movable table 7 having a two-axis movable part that can change the angle vertically and horizontally, and is combined with a gear so that the axis can be rotated by a motor, and a Toshiba computer J-3100 is placed at the center. We have constructed a system that tracks the position of a human face using an ultrasonic sensor. At this time, the focal range of the ultrasonic sensor was narrowed, and the housing 1 was moved so that the magnitude of the ultrasonic wave reflected by a disk with a diameter of 100 mm located at a distance of 200 mm from the housing 1 was maximized. If you use such a system, you can look at the other person's line of sight and
It was confirmed that even if the caller moved 180 degrees around Housing 1, they could have a natural conversation.

【0019】[0019]

【発明の効果】以上詳述したように、本発明のテレビ電
話は液晶表示素子を用いているので小形化することがで
き、通話者間で視線を一致させることができ、かつ明る
い表示画面を得ることができる。
[Effects of the Invention] As detailed above, since the videophone of the present invention uses a liquid crystal display element, it can be miniaturized, the line of sight between callers can be aligned, and the display screen can be bright. Obtainable.

【図面の簡単な説明】[Brief explanation of the drawing]

【図1】本発明の実施例1におけるテレビ電話の構成図
FIG. 1 is a configuration diagram of a videophone according to a first embodiment of the present invention.

【符号の説明】[Explanation of symbols]

1…筐体、2…液晶テレビ、3…偏光ビームスプリッタ
、4…CCDカメラ、5…蛍光灯、6…マイクロフォン
とスピーカ、7…可動台。
1... Housing, 2... LCD TV, 3... Polarizing beam splitter, 4... CCD camera, 5... Fluorescent lamp, 6... Microphone and speaker, 7... Movable base.

Claims (1)

【特許請求の範囲】[Claims] 【請求項1】  液晶表示素子と、該液晶表示素子の画
面の前面に配置された偏光ビームスプリッタ又はダイク
ロイックビームスプリッタからなる光学系と、該光学系
からの反射光を撮影する撮像装置とを具備したことを特
徴とするテレビ電話。
1. A liquid crystal display device, an optical system including a polarizing beam splitter or a dichroic beam splitter disposed in front of a screen of the liquid crystal display device, and an imaging device that photographs reflected light from the optical system. A videophone featuring the following features:
JP3085383A 1991-04-17 1991-04-17 Television telephone set Pending JPH04317286A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3085383A JPH04317286A (en) 1991-04-17 1991-04-17 Television telephone set

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3085383A JPH04317286A (en) 1991-04-17 1991-04-17 Television telephone set

Publications (1)

Publication Number Publication Date
JPH04317286A true JPH04317286A (en) 1992-11-09

Family

ID=13857219

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3085383A Pending JPH04317286A (en) 1991-04-17 1991-04-17 Television telephone set

Country Status (1)

Country Link
JP (1) JPH04317286A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008205839A (en) * 2007-02-20 2008-09-04 Canon Inc Video image device and image communication equipment
JP2014238442A (en) * 2013-06-06 2014-12-18 パナソニック インテレクチュアル プロパティ コーポレーション オブアメリカPanasonic Intellectual Property Corporation of America Imaging display device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008205839A (en) * 2007-02-20 2008-09-04 Canon Inc Video image device and image communication equipment
JP2014238442A (en) * 2013-06-06 2014-12-18 パナソニック インテレクチュアル プロパティ コーポレーション オブアメリカPanasonic Intellectual Property Corporation of America Imaging display device

Similar Documents

Publication Publication Date Title
US5619254A (en) Compact teleconferencing eye contact terminal
US7420585B2 (en) Image capture and display device
US4821307A (en) Image splitter for two-way imaging apparatus
JPH01144876A (en) Audio-visual communication terminal equipment
US5027219A (en) Apparatus and method for converting pictures or images into video signals
JP3401502B2 (en) Eye imaging device
JPH08195945A (en) Display device with built-in camera
JP2004135275A (en) Display imaging apparatus and method for matched visual line
JPH04317286A (en) Television telephone set
JP3122531B2 (en) Display / imaging device
JPH04213287A (en) Display and image pickup device
JP3127499B2 (en) Television camera coaxial projection display
JP2648168B2 (en) TV camera coaxial screen display
JP3259285B2 (en) TV camera coaxial display device
JPH11298779A (en) Image capturing device
JP3330129B2 (en) Video display device
JPH07115481A (en) Image input/output device for public tv telephone set
JPH06225298A (en) Terminal device for visual communication
JPH06233290A (en) Image pickup and display device
JP2003153126A (en) Projection display device
JPH11355743A (en) Display device with photographing function
JP2000101981A (en) Image pickup display device
JPS63252084A (en) Television telephone set
KR20230155245A (en) computer device for video communication
JP2599204Y2 (en) Large screen remote transmission device