JPS61156425A - Light transmitting touch input device - Google Patents

Light transmitting touch input device

Info

Publication number
JPS61156425A
JPS61156425A JP59277469A JP27746984A JPS61156425A JP S61156425 A JPS61156425 A JP S61156425A JP 59277469 A JP59277469 A JP 59277469A JP 27746984 A JP27746984 A JP 27746984A JP S61156425 A JPS61156425 A JP S61156425A
Authority
JP
Japan
Prior art keywords
light
light emitting
sequence
circuit
elements
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
JP59277469A
Other languages
Japanese (ja)
Inventor
Shoji Miyazawa
宮澤　昭司
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.)
NEC Corp
Original Assignee
NEC 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 NEC Corp filed Critical NEC Corp
Priority to JP59277469A priority Critical patent/JPS61156425A/en
Publication of JPS61156425A publication Critical patent/JPS61156425A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE:To attain an optical scan at a high speed by selecting (n) pieces of elements which are not affected by the dispersion of light and actuating the paired light emitting elements and photoreceptors every (n) paired elements. CONSTITUTION:The infrared ray emitting element trains 3 and 5 and photoreceptor trains 2 and 4 are provided vertically and horizontally respectively at a display part 1. Then an input position indicated by a finger, etc. is detected with cut-off of light on a screen of the part 1. A sequence generating circuit 6 produces a sequence to drive X and Y light emitting elements in a fixed sequence. The control signal of this sequence is sent to a driving circuit 7 for light emitting element. The circuit 7 drives the designated X and Y light emitting elements. A reception data discriminating circuit 8 decides whether or not the light is cut off by a finger, etc. with the output of the photoreceptor in terms of X and Y directions. The drive of the element pairs for optical scan is carried out every (n) element pairs. This omits the malfunction preventing time due to the dispersion of light of the adjacent element pair and therefore attains an optical scan at a high speed. Thus a touched position can be detected in a short time with no malfunction.

Description

【発明の詳細な説明】 〔産業上の利用分野〕 本発明は、マンマシンインターフェイスとして有効な表
示装置上の任意の位置を人間が指等で指定できるタッチ
入力装置に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a touch input device that allows a human being to specify an arbitrary position on a display device with a finger or the like, which is effective as a man-machine interface.

〔従来の技術〕[Conventional technology]

従来、この棟のタッチ入力装置は順次同一方向に走査し
ており、隣接する素子に対する光拡散等の相互干渉のた
め、光量の蓄積が減少するまで遅延時間を持たせていた
。Conventionally, the touch input devices in this building scanned sequentially in the same direction, and due to mutual interference such as light diffusion with adjacent elements, there was a delay time until the amount of accumulated light decreased.

〔発明が解決しようとする問題点〕[Problem that the invention seeks to solve]

上述した従来のタッチ入力装置では、全画面をスキャン
するために、かなりの時間がかかり、位置検出まるまで
に時間が長くなるという欠点があった。The conventional touch input device described above has the disadvantage that it takes a considerable amount of time to scan the entire screen, and it takes a long time to detect the position.

〔問題点を解決するだめの手段〕[Failure to solve the problem]

本発明のタッチ入力装置は、光拡散の影響が及ばないｎ
を選び、発光、受光の素子対の動作をｎ素子対おきに行
うことにより、高速な光走査を可能とするものである。The touch input device of the present invention is not affected by light diffusion.
High-speed optical scanning is made possible by selecting the following elements and performing the operation of the light emitting and light receiving element pairs every n element pairs.

通常１組の発光素−ＲＬＥＤ）受光素子で外乱光に対し
て誤動作を防止するため約２００μｓ程度の時間を要し
ている。Ｘ、　　Ｙ軸各５０組を順次走査すると計２０
ｍ５が代表的な周期である。本発明によるタッチ入力装
置は、光拡散の影響を受けない範囲でスキャンするもの
で、発光、受光の素子列をｎ個ごとにスキャンするため
のシーケンス回路の動作問題が必要となるが、誤動作防
止のための時間が不必要となり、高速な光走査が可能と
なる。Normally, it takes about 200 μs to prevent malfunctions in a pair of light emitting elements (RLED) and light receiving elements due to ambient light. Sequentially scanning 50 sets each on the X and Y axes results in a total of 20
m5 is a typical period. The touch input device according to the present invention scans within a range that is not affected by light diffusion, and requires an operation problem of a sequence circuit to scan every n rows of light emitting and light receiving elements, but prevents malfunctions. This eliminates the need for additional time and enables high-speed optical scanning.

〔笑施例〕[LOL example]

次に、本発明について図面を参照して説明する。 Next, the present invention will be explained with reference to the drawings.

図は本発明の一実施例である。図において、１は表示部
であり、この表示部の上下左右に赤外線発光素子列３．
５及び受光素子列２，４が設置され、表示部画面上の指
等による入力位置を、光の遮断により検知する。シーケ
ンス発生回路６は、Ｘ、　Ｙの発光素子を定められた順
序に従りて駆動するためのシーケンスを作シ出し、この
制御信号は、発光素子駆動回路７へ送られ、駆動回路は
、指定されたＸ、　Ｙの発光素子を駆動する。受信デー
タ判別回路８は、受光素子の出力によや、指等による光
遮断がめったかどうかをＸ、　Ｙ方向について判定する
。The figure shows one embodiment of the invention. In the figure, numeral 1 is a display section, and rows of infrared light emitting elements 3.
5 and light-receiving element arrays 2 and 4 are installed, and the input position by a finger or the like on the display screen is detected by blocking light. The sequence generation circuit 6 generates a sequence for driving the X and Y light emitting elements in a predetermined order, and this control signal is sent to the light emitting element drive circuit 7, which drives the light emitting elements according to the specified order. The X and Y light emitting elements are driven. The received data determination circuit 8 determines in the X and Y directions whether or not the output of the light receiving element is rarely interrupted by a finger or the like.

これらの判定結果は、コンビエータ１０及び表示制御部
９を経由して、表示部１上に表示される。These determination results are displayed on the display section 1 via the combiator 10 and the display control section 9.

例ｎ＝１＝受光素子＄１．　＃−３，＄５．　ｉ、・・
・（第１回目） ＃２．　　＋４．　　ｌ）、　ｌ、　　・・・（第２回
目）〔発明の効果〕 以上説明したように本発明は、光走査の素子対の動作を
ｎ素子対おきに行うことによシ、隣の素子対の光拡散に
よる誤動作防止時間が不必要となシ、高速に光走査が行
え、このことによシ誤動作なく短時間でタッチ位置が検
出できる効果がある。Example n=1=light receiving element $1. #-3, $5. i...
・(1st time) #2. +4. l), l, ... (Second session) [Effects of the invention] As explained above, the present invention operates the optical scanning element pairs every n element pairs. There is no need for time to prevent malfunctions due to light diffusion, and optical scanning can be performed at high speed, which has the effect of allowing the touch position to be detected in a short time without malfunctions.

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

図は、本発明のタッチ入力装置の構成図である。 １・・・・・・表示部、２，５・・・・・・受光素子列
、３，４・・・・・・発光素子列、６・・・・・・シー
ケンス発生回路、７・・・・・・受光素子駆動回路、８
・・・・・・受信データ判別回路、９・・・・・・表示
制御部、１０・・川・コンビ為−タ。The figure is a configuration diagram of a touch input device of the present invention. DESCRIPTION OF SYMBOLS 1... Display section, 2, 5... Light receiving element row, 3, 4... Light emitting element row, 6... Sequence generation circuit, 7... ... Light receiving element drive circuit, 8
. . . Received data discrimination circuit, 9 . . . Display control unit, 10 . . .

Claims (1)

【特許請求の範囲】[Claims] 表示装置と、その表示画面上を行方向と列方向に順次光
走査する回路と、タッチ入力として光遮蔽を検出する回
路と、前記光走査の順序を前記行又は列について少なく
とも１つおきに行なわせるように制御する回路とを備え
て成ることを光透過型タッチ入力装置。a display device; a circuit for sequentially light-scanning the display screen in the row and column directions; a circuit for detecting light shielding as a touch input; A light-transmissive touch input device comprising: a circuit for controlling the display;
JP59277469A 1984-12-28 1984-12-28 Light transmitting touch input device Pending JPS61156425A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP59277469A JPS61156425A (en) 1984-12-28 1984-12-28 Light transmitting touch input device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP59277469A JPS61156425A (en) 1984-12-28 1984-12-28 Light transmitting touch input device

Publications (1)

Publication Number Publication Date
JPS61156425A true JPS61156425A (en) 1986-07-16

Family

ID=17584026

Family Applications (1)

Application Number Title Priority Date Filing Date
JP59277469A Pending JPS61156425A (en) 1984-12-28 1984-12-28 Light transmitting touch input device

Country Status (1)

Country Link
JP (1) JPS61156425A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6432329A (en) * 1987-07-29 1989-02-02 Matsushita Electric Ind Co Ltd Coordinate input device
WO2010137219A1 (en) * 2009-05-28 2010-12-02 シャープ株式会社 Touch panel, liquid crystal panel, liquid crystal display device, and liquid crystal display device incorporating touch panel

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6432329A (en) * 1987-07-29 1989-02-02 Matsushita Electric Ind Co Ltd Coordinate input device
WO2010137219A1 (en) * 2009-05-28 2010-12-02 シャープ株式会社 Touch panel, liquid crystal panel, liquid crystal display device, and liquid crystal display device incorporating touch panel
US8896576B2 (en) 2009-05-28 2014-11-25 Sharp Kabushiki Kaisha Touch panel, liquid crystal panel, liquid crystal display device, and touch panel-integrated liquid crystal display device

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