JPH09138384A - Method for controlling stereoscopic image observing glasses - Google Patents

Method for controlling stereoscopic image observing glasses

Info

Publication number
JPH09138384A
JPH09138384A JP7296817A JP29681795A JPH09138384A JP H09138384 A JPH09138384 A JP H09138384A JP 7296817 A JP7296817 A JP 7296817A JP 29681795 A JP29681795 A JP 29681795A JP H09138384 A JPH09138384 A JP H09138384A
Authority
JP
Japan
Prior art keywords
image
stereoscopic image
period
eye video
eye
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
Application number
JP7296817A
Other languages
Japanese (ja)
Other versions
JP3066298B2 (en
Inventor
Yukio Mori
幸夫 森
Haruhiko Murata
治彦 村田
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.)
Sanyo Electric Co Ltd
Original Assignee
Sanyo Electric Co Ltd
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 Sanyo Electric Co Ltd filed Critical Sanyo Electric Co Ltd
Priority to JP7296817A priority Critical patent/JP3066298B2/en
Publication of JPH09138384A publication Critical patent/JPH09138384A/en
Application granted granted Critical
Publication of JP3066298B2 publication Critical patent/JP3066298B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N13/00—Stereoscopic video systems; Multi-view video systems; Details thereof
    • H04N13/30—Image reproducers
    • H04N13/332—Displays for viewing with the aid of special glasses or head-mounted displays [HMD]
    • H04N13/341—Displays for viewing with the aid of special glasses or head-mounted displays [HMD] using temporal multiplexing
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B30/00—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images
    • G02B30/20—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes
    • G02B30/22—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes of the stereoscopic type
    • G02B30/24—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes of the stereoscopic type involving temporal multiplexing, e.g. using sequentially activated left and right shutters

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  • Physics & Mathematics (AREA)
  • Liquid Crystal (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Testing, Inspecting, Measuring Of Stereoscopic Televisions And Televisions (AREA)
  • Stereoscopic And Panoramic Photography (AREA)

Abstract

PROBLEM TO BE SOLVED: To prevent a flicker due to interference between a flashing on/off period of a fluorescent lamp and a drive period of stereoscopic image observing glasses. SOLUTION: Video signals of left/right are supplied to a double speed conversion circuit l, and is converted into a double speed to be supplied to a selector 2. The selector 2 selects a video L for a left eye when an L/R identification signal is 'High', and selects the video R for a right eye when 'Low' to supply them to a monitor (CRT) 3 driven at a double speed of a regular time. Then, the video L for the left eye and the video R for the right eye are displayed alternately on the monitor 3 at the period of 1/2 times of a field period. On the other hand, the L/R identification signal and its inversion signal are adjusted respectively in their duty ratios by pulse width setting circuits 7L, 7R so that a shutter open period becomes longer than a shutter close period to be supplied to respective left/right liquid crystal shutters 6L, 6R of the stereoscopic image observing glasses 6 through shutter control circuits 4L, 4R. Thus, a stereoscopic image suppressing the flicker is observed by observing the monitor 3 through the stereoscopic image observing glasses 6.

Description

【発明の詳細な説明】Detailed Description of the Invention

【０００１】[0001]

【発明の属する技術分野】本発明は、立体画像表示装置
に使用する立体画像観察用眼鏡の制御方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a control method of stereoscopic image observation glasses used in a stereoscopic image display device.

【０００２】[0002]

【従来の技術】従来、立体画像を得るための立体画像表
示装置の一つとして、例えば、特開昭６２−１３３８９
１号に記載のように視差を有する左目用映像及び右目用
映像を所定周期（例えばフィールド周期）で交互にディ
スプレイに供給し、この画像を前記所定周期に同期して
駆動される液晶シャッターを備える立体画像観察用眼鏡
で観察する方法がある。2. Description of the Related Art Conventionally, as one of three-dimensional image display devices for obtaining a three-dimensional image, for example, Japanese Patent Laid-Open No. 62-13389.
As described in No. 1, a left-eye image and a right-eye image having parallax are alternately supplied to a display at a predetermined cycle (for example, a field cycle), and a liquid crystal shutter that is driven in synchronization with the image is provided. There is a method of observing with stereoscopic image observing glasses.

【０００３】次に、図４に上述の立体画像表示システム
のブロック図を示す。左右の映像信号は倍速変換回路１
に供給され、ここで各映像信号が倍速に変換される。ま
た、この倍速変換回路１は垂直同期信号に基づきフィー
ルド周期の１／２倍の周期（１／６０秒）でハイとロー
を繰り返すＬ／Ｒ識別信号を発生する。倍速に変換され
た映像信号はセレクタ２に供給される。このセレクタは
前記Ｌ／Ｒ識別信号がハイのとき左目用映像Ｌを選択
し、ローのとき右目用映像Ｒを選択する。このセレクタ
２の出力はモニタ（ＣＲＴ）３に供給される。このモニ
タ３は水平及び垂直偏向周波数が通常のＮＴＳＣ方式の
２倍の周波数となっている。従って、このモニタ上には
フィールド周期の１／２倍の周期で左目用映像Ｌと右目
用映像Ｒが交互に表示される。Next, FIG. 4 shows a block diagram of the above-mentioned stereoscopic image display system. Left and right video signals are double speed conversion circuit 1
, Where each video signal is converted to double speed. Further, the double speed conversion circuit 1 generates an L / R identification signal that repeats high and low at a cycle (1/60 seconds) that is ½ times the field cycle based on the vertical synchronizing signal. The video signal converted to double speed is supplied to the selector 2. This selector selects the image L for the left eye when the L / R identification signal is high, and selects the image R for the right eye when the signal is low. The output of the selector 2 is supplied to the monitor (CRT) 3. The monitor 3 has horizontal and vertical deflection frequencies that are twice as high as those of the normal NTSC system. Therefore, the left-eye image L and the right-eye image R are alternately displayed on the monitor at a cycle that is 1/2 the field cycle.

【０００４】一方、前記Ｌ／Ｒ識別信号はシャッタ開閉
信号としてＬ用のシャッタ制御回路４Ｌに供給される。
また、前記Ｌ／Ｒ識別信号はインバータ５で反転された
後、Ｒ用のシャッタ制御回路４Ｒに供給される。これら
のシャッタ制御回路４Ｌ，４ＲはＬ／Ｒ識別信号がハイ
のとき、１８Ｖの電圧を発生し、ローのとき、０Ｖを発
生する。そして、前記シャッタ制御回路４Ｌ，４Ｒの出
力はそれぞれ立体画像観察用眼鏡６のＬ用の液晶シャッ
ター６Ｌ及びＲ用の液晶シャッター６Ｒに供給される。On the other hand, the L / R identification signal is supplied to the shutter control circuit 4L for L as a shutter opening / closing signal.
The L / R identification signal is inverted by the inverter 5 and then supplied to the R shutter control circuit 4R. These shutter control circuits 4L and 4R generate a voltage of 18V when the L / R identification signal is high, and generate 0V when the signal is low. The outputs of the shutter control circuits 4L and 4R are supplied to the L liquid crystal shutter 6L and the R liquid crystal shutter 6R of the stereoscopic image observing glasses 6, respectively.

【０００５】従って、左右の液晶シャッターは１／１２
０秒周期で交互に開閉し、これに同期してモニタ３上に
左右の映像が映出され立体視が可能となる。このように
して、フィールド周波数の２倍でを駆動することにより
フリッカを軽減することができる。Therefore, the left and right liquid crystal shutters are 1/12
It alternately opens and closes at a cycle of 0 seconds, and in synchronization with this, left and right images are displayed on the monitor 3 to enable stereoscopic viewing. In this way, flicker can be reduced by driving at twice the field frequency.

【０００６】ところで、前記立体画像観察用眼鏡には、
モニタからの映像と共に、室内であれば、蛍光灯の光も
入射されることになる。この蛍光灯は電源周波数に同期
して点滅しており、この点滅の周期と立体画像観察用眼
鏡の駆動の周期が特定の関係にあるときフリッカを生じ
ることがある。By the way, the stereoscopic image observing glasses are
If it is indoors, the light from the fluorescent lamp will be incident along with the image from the monitor. The fluorescent lamp blinks in synchronization with the power supply frequency, and flicker may occur when the blinking cycle and the driving cycle of the stereoscopic image observing glasses have a specific relationship.

【０００７】次に、このフリッカの発生について図５に
従って説明する。電源周波数が５０Ｈｚの地区における
電源電圧（イ）により駆動される蛍光灯の輝度は（ロ）
の如く、ピークの周期が１／１００秒となる。Next, the occurrence of flicker will be described with reference to FIG. The brightness of the fluorescent lamp driven by the power supply voltage (a) in the area where the power supply frequency is 50 Hz is (b)
As described above, the peak cycle is 1/100 second.

【０００８】一方、立体画像観察用眼鏡の液晶シャッタ
ーの開閉周期は左右とも（ハ）（ニ）に示すように１／
６０秒（16.66ms）で、デューティー比１：１であり、
この液晶シャッター６Ｌ，６Ｒを通過した通過光は
（ホ）（ト）のようになる。ここで、この通過光の１／
６０秒毎の通過光量はＳ１及びＳ２に比べてＳ３の方が
多くなっている。そして、これらの通過光を人間の目で
感じる明るさは（ヘ）（チ）のように通過光を積分した
ものとなるが、これは一定とならず１／２０秒周期で明
るさが変動したものとなる。即ち、２０Ｈｚのフリッカ
が生じることになるのである。On the other hand, the opening / closing cycle of the liquid crystal shutter of the stereoscopic image observing glasses is 1 / left as shown in (c) and (d).
In 60 seconds (16.66ms), the duty ratio is 1: 1,
The light passing through the liquid crystal shutters 6L and 6R is as shown in (e) and (g). Where 1 / of this transmitted light
The amount of light passing through every 60 seconds is larger in S3 than in S1 and S2. Then, the brightness of the transmitted light sensed by the human eye is the integrated value of the transmitted light as shown in (f) and (h), but this is not constant and the brightness fluctuates in a 1/20 second cycle. It will be what you did. That is, flicker of 20 Hz occurs.

【０００９】[0009]

【発明が解決しようとする課題】本発明は上述の欠点を
解消するものであり、蛍光灯の点滅の周期と立体画像観
察用眼鏡の駆動の周期が特定の関係にあるときでもフリ
ッカを生じることがない立体画像観察用眼鏡の制御方法
を提供するものである。SUMMARY OF THE INVENTION The present invention solves the above-mentioned drawbacks and causes flicker even when the blinking cycle of the fluorescent lamp and the driving cycle of the stereoscopic image observing glasses have a specific relationship. There is provided a method for controlling stereoscopic image observation glasses.

【００１０】[0010]

【課題を解決するための手段】本発明は、垂直同期周波
数のＮ倍（Ｎは１以上の正の整数）の周波数で時分割さ
れた左目用映像信号と右目用映像信号とを前記垂直同期
周波数のＮ倍の周波数で駆動される表示手段に与え、左
目用映像と右目用映像とを前記表示手段に交互に表示す
ると共に、左目用映像信号であるか右目用映像信号であ
るかを識別するための左右識別信号を発生し、立体画像
観察用眼鏡の左側シャッタ及び右側シャッタをそれぞれ
前記左右識別信号に同期して開閉し、前記左目用映像が
表示されているときは前記左側シャッタのみを、前記右
目用映像が表示されているときは前記右側シャッタのみ
を開くことにより立体画像を得る立体画像表示装置にお
いて、前記左側及び右側シャッタを、その開期間が閉期
間よりも長くなるよう制御してなる。According to the present invention, the left-eye video signal and the right-eye video signal, which are time-divided at a frequency N times the vertical synchronization frequency (N is a positive integer of 1 or more), are vertically synchronized. A left-eye video signal and a right-eye video image are alternately displayed on the display means by being applied to a display means driven at a frequency N times the frequency, and it is discriminated whether it is a left-eye video signal or a right-eye video signal. Generates a left / right identification signal for opening and closing the left and right shutters of the stereoscopic image observing glasses in synchronization with the left / right identification signal, and when the left-eye image is displayed, only the left shutter is opened. In a stereoscopic image display device that obtains a stereoscopic image by opening only the right shutter when the right-eye image is displayed, the left and right shutters have an open period that is longer than a closed period. Cormorant control and composed.

【００１１】また、本発明は、 前記開期間を前フィー
ルドの有効映像期間の終了から次フィールドの有効映像
期間の直前までとしてなる。更に、本発明は、垂直同期
周波数のＮ倍（Ｎは１以上の正の整数）の周波数で時分
割された左目用映像信号と右目用映像信号とを前記垂直
同期周波数のＮ倍の周波数で駆動される表示手段に与
え、左目用映像と右目用映像とを前記表示手段に交互に
表示すると共に、左目用映像信号であるか右目用映像信
号であるかを識別するための左右識別信号を発生し、立
体画像観察用眼鏡の左側シャッタ及び右側シャッタをそ
れぞれ前記左右識別信号に同期して開閉し、前記左目用
映像が表示されているときは前記左側シャッタのみを、
前記右目用映像が表示されているときは前記右側シャッ
タのみを開くことにより立体画像を得る立体画像表示装
置において、前記左側及び右側シャッタの各開期間を可
変にしてなる。Further, in the present invention, the open period is from the end of the effective video period of the previous field to immediately before the effective video period of the next field. Further, according to the present invention, the left-eye video signal and the right-eye video signal, which are time-divided at a frequency N times the vertical synchronization frequency (N is a positive integer of 1 or more), are generated at a frequency N times the vertical synchronization frequency. A left-eye video signal and a right-eye video image are alternately displayed on the display means, and a left-right identification signal for identifying a left-eye video signal or a right-eye video signal is given to the driven display means. Occurring, opening and closing the left and right shutters of the stereoscopic image observing glasses in synchronization with the left and right identification signals, respectively, when the left-eye image is displayed, only the left shutter,
In a stereoscopic image display device that obtains a stereoscopic image by opening only the right shutter when the right-eye video image is displayed, each open period of the left and right shutters is variable.

【００１２】[0012]

【発明の実施の形態】以下、図面に従って本発明の実施
の形態を説明する。図１は本発明の一実施例における立
体画像表示システムのブロック図を示し、図５と同一部
分には同一符号を付し説明を省略する。倍速変換回路１
からのＬ／Ｒ識別信号及びその反転出力はシャッタ制御
回路４Ｌ、４Ｒのそれぞれ全段に配置されたパルス幅設
定回路７Ｌ，７Ｒに供給される。このパルス幅設定回路
はパルス幅制御信号によりＬ／Ｒ識別信号のデューティ
ー比を可変することができる。BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram of a stereoscopic image display system according to an embodiment of the present invention. The same parts as those in FIG. Double speed conversion circuit 1
The L / R identification signal and its inverted output are supplied to pulse width setting circuits 7L and 7R arranged in all stages of the shutter control circuits 4L and 4R. This pulse width setting circuit can change the duty ratio of the L / R identification signal by the pulse width control signal.

【００１３】従って、このデューティー比を変えること
により、液晶シャッタの１／６０秒毎の通過光量がそれ
ぞれ等しくなるように調整することができる。即ち、本
実施例では、図２（ロ）（ハ）に示すようにシャッタ開
閉信号は、それぞれ周期は１／６０秒であるが、ハイ期
間、即ち、シャッタ開期間は１／１００秒となるように
制御信号により調整されている。このようにすることに
より、１／６０秒ごとの通過光量は（ニ）（ヘ）のよう
にそれぞれ一定となる。Therefore, by changing the duty ratio, it is possible to adjust so that the amount of light passing through the liquid crystal shutter every 1/60 seconds becomes equal. That is, in this embodiment, as shown in FIGS. 2B and 2C, the shutter opening / closing signals have a cycle of 1/60 seconds, but a high period, that is, a shutter opening period is 1/100 seconds. Is adjusted by the control signal. By doing so, the amount of light passing through every 1/60 second becomes constant as shown in (d) and (f).

【００１４】従って、目が感じる明るさは（ホ）（ト）
に示すようにフリッカがない一定のものとなる。尚、フ
リッカの点で見れば上述の実施例の如くシャッタ開期間
を１／１００秒まで広げれば良いが、このようにする
と、左右シャッタ開期間が重なった期間に有効映像が存
在する可能性があり、左右映像間でクロストークが発生
するおそれがある。このため、シャッタ開期間はフリッ
カとクロストークの両方を考慮して設定することが望ま
しい。Therefore, the brightness perceived by the eyes is (e) (g)
As shown in, there is no flicker. From the point of view of flicker, the shutter open period may be extended to 1/100 second as in the above-described embodiment. However, in this case, an effective image may exist in a period in which the left and right shutter open periods overlap. Yes, crosstalk may occur between the left and right images. Therefore, it is desirable to set the shutter open period in consideration of both flicker and crosstalk.

【００１５】これらの点を考慮した実施例について図３
に従って説明する。この実施例における左右のシャッタ
開期間（ハ）（ニ）はそれぞれ、フィールド識別信号
（ロ）及びその反転信号の立ち上がりに同期して立ち上
がり、映像信号（イ）の２フィールド目の有効映像期間
の開始の直前で立ち下がるように設定されている。即
ち、図２の実施例ではシャッタ開期間が10.00ms、シャ
ッタ閉期間が、6.67msであったのに対して、この実施例
では、シャッタ開期間が9.05ms、シャッタ閉期間が7.62
msとなっている。このように設定することにより、左右
のシャッタ開期間が重なった期間には有効映像が存在し
ないため、左右映像間のクロストークが発生することが
ない。更に、シャッタ開期間は図２の実施例よりは狭い
ものの、従来の開期間8.33msよりは充分広いためフリッ
カも充分抑圧できる。FIG. 3 shows an embodiment taking these points into consideration.
It will be described according to. The left and right shutter open periods (c) and (d) in this embodiment rise in synchronism with the rising edges of the field identification signal (b) and its inverted signal, respectively, of the effective image period of the second field of the image signal (a). It is set to fall just before the start. That is, in the embodiment of FIG. 2, the shutter open period is 10.00 ms and the shutter closed period is 6.67 ms, whereas in this embodiment, the shutter open period is 9.05 ms and the shutter closed period is 7.62.
ms. By setting in this way, an effective image does not exist in a period in which the left and right shutter open periods overlap each other, so that crosstalk between the left and right images does not occur. Further, although the shutter opening period is narrower than that of the embodiment shown in FIG. 2, flicker can be sufficiently suppressed because it is sufficiently wider than the conventional opening period of 8.33 ms.

【００１６】[0016]

【発明の効果】上述の如く本発明によれば、蛍光灯の点
滅の周期と立体画像観察用眼鏡の駆動の周期が特定の関
係にあるときでも、左右映像間のクロストークを発生す
ることなく、フリッカを極力抑えることができる。As described above, according to the present invention, even when the blinking cycle of the fluorescent lamp and the driving cycle of the stereoscopic image observing glasses have a specific relationship, crosstalk between the left and right images does not occur. The flicker can be suppressed as much as possible.

【図面の簡単な説明】[Brief description of the drawings]

【図１】本発明の一実施例における立体画像表示システ
ムのブロック図である。FIG. 1 is a block diagram of a stereoscopic image display system according to an embodiment of the present invention.

【図２】本実施例における要部波形図である。FIG. 2 is a main part waveform diagram in the present embodiment.

【図３】本発明の他の実施例における液晶シャッタの駆
動波形の波形図である。FIG. 3 is a waveform diagram of drive waveforms of a liquid crystal shutter according to another embodiment of the present invention.

【図４】従来の立体画像表示システムのブロック図であ
る。FIG. 4 is a block diagram of a conventional stereoscopic image display system.

【図５】従来例における要部波形図である。FIG. 5 is a main part waveform diagram in a conventional example.

【符号の説明】[Explanation of symbols]

１ 倍速変換回路 ２ セレクタ ３ モニタ ４Ｌ，４Ｒ シャッタ制御回路 ５ インバータ ６ 立体画像観察用眼鏡 ６Ｌ，６Ｒ 液晶シャッタ ７Ｌ，７Ｒ パルス幅設定回路 1 Double Speed Conversion Circuit 2 Selector 3 Monitor 4L, 4R Shutter Control Circuit 5 Inverter 6 Stereoscopic Image Viewing Glasses 6L, 6R Liquid Crystal Shutter 7L, 7R Pulse Width Setting Circuit

Claims (3)

【特許請求の範囲】[Claims] 【請求項１】 垂直同期周波数のＮ倍（Ｎは１以上の正
の整数）の周波数で時分割された左目用映像信号と右目
用映像信号とを前記垂直同期周波数のＮ倍の周波数で駆
動される表示手段に与え、左目用映像と右目用映像とを
前記表示手段に交互に表示すると共に、左目用映像信号
であるか右目用映像信号であるかを識別するための左右
識別信号を発生し、立体画像観察用眼鏡の左側シャッタ
及び右側シャッタをそれぞれ前記左右識別信号に同期し
て開閉し、前記左目用映像が表示されているときは前記
左側シャッタのみを、前記右目用映像が表示されている
ときは前記右側シャッタのみを開くことにより立体画像
を得る立体画像表示装置において、 前記左側及び右側シャッタを、その開期間が閉期間より
も長くなるよう制御してなる立体画像観察用眼鏡の制御
方法。1. A left-eye video signal and a right-eye video signal, which are time-divided at a frequency N times the vertical synchronization frequency (N is a positive integer of 1 or more), are driven at a frequency N times the vertical synchronization frequency. The left-eye video image and the right-eye video image are alternately displayed on the display means, and a left-right identification signal for identifying the left-eye video signal or the right-eye video signal is generated. Then, the left and right shutters of the stereoscopic image observing glasses are opened and closed in synchronization with the left and right identification signals, respectively, and when the left eye image is displayed, only the left shutter is displayed, and the right eye image is displayed. In the three-dimensional image display device that obtains a three-dimensional image by opening only the right shutter, the three-dimensional image obtained by controlling the left and right shutters so that the open period is longer than the closed period. Method of controlling the police for glasses. 【請求項２】 前記開期間は前フィールドの有効映像
期間の終了から次フィールドの有効映像期間の直前まで
としてなる請求項１記載の立体画像観察用眼鏡の制御方
法。2. The method for controlling stereoscopic image observation glasses according to claim 1, wherein the open period is from the end of the effective image period of the previous field to the point immediately before the effective image period of the next field. 【請求項３】 垂直同期周波数のＮ倍（Ｎは１以上の正
の整数）の周波数で時分割された左目用映像信号と右目
用映像信号とを前記垂直同期周波数のＮ倍の周波数で駆
動される表示手段に与え、左目用映像と右目用映像とを
前記表示手段に交互に表示すると共に、左目用映像信号
であるか右目用映像信号であるかを識別するための左右
識別信号を発生し、立体画像観察用眼鏡の左側シャッタ
及び右側シャッタをそれぞれ前記左右識別信号に同期し
て開閉し、前記左目用映像が表示されているときは前記
左側シャッタのみを、前記右目用映像が表示されている
ときは前記右側シャッタのみを開くことにより立体画像
を得る立体画像表示装置において、 前記左側及び右側シャッタの各開期間を可変にしてなる
立体画像観察用眼鏡の制御方法。3. A left-eye video signal and a right-eye video signal, which are time-divided at a frequency N times the vertical synchronization frequency (N is a positive integer of 1 or more), are driven at a frequency N times the vertical synchronization frequency. The left-eye video image and the right-eye video image are alternately displayed on the display means, and a left-right identification signal for identifying the left-eye video signal or the right-eye video signal is generated. Then, the left and right shutters of the stereoscopic image observing glasses are opened and closed in synchronization with the left and right identification signals, respectively, and when the left eye image is displayed, only the left shutter is displayed, and the right eye image is displayed. In the stereoscopic image display device that obtains a stereoscopic image by opening only the right shutter when the above, the control method of the stereoscopic image observing glasses in which the open periods of the left and right shutters are variable.
JP7296817A 1995-11-15 1995-11-15 Control method of glasses for stereoscopic image observation Expired - Fee Related JP3066298B2 (en)

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