JP2003058316A - Portable terminal - Google Patents
Portable terminalInfo
- Publication number
- JP2003058316A JP2003058316A JP2001249874A JP2001249874A JP2003058316A JP 2003058316 A JP2003058316 A JP 2003058316A JP 2001249874 A JP2001249874 A JP 2001249874A JP 2001249874 A JP2001249874 A JP 2001249874A JP 2003058316 A JP2003058316 A JP 2003058316A
- Authority
- JP
- Japan
- Prior art keywords
- touch panel
- mobile terminal
- input
- character
- present
- 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
Landscapes
- Position Input By Displaying (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は，主として手に持っ
てタッチパネルが操作される携帯端末に関し，特に背面
から操作可能なタッチパネルを具備する携帯端末に関す
るものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mobile terminal which is mainly operated by holding a touch panel in a hand, and more particularly to a mobile terminal having a touch panel which can be operated from the back side.
【０００２】[0002]
【従来の技術】小型化・軽量化が進むＰＤＡや携帯電話
等の携帯端末では，限られたスペースに配置された操作
キーやタッチパネル等から文字入力を行わねばならな
い。この文字入力を容易化するため，タッチパネルを利
用した手書き入力機能を有するＰＤＡ等の携帯端末が普
及している。この手書き入力は，専用ペンや指（主に人
差し指）で行われるが，通常は，両手を用いる必要があ
る。即ち，一方の手で携帯端末の本体を持ち，もう一方
の手で手書き入力を行う。これを片手でも手書き入力を
行えるようにするため，特開２０００−２７８３９１号
公報（以下，公報１という）に，背面にタッチパネルを
供えた「背面手書き機能を有する携帯電話機」が示され
ている。これにより，人差し指以外の指で本体を保持し
ながら，人差し指で文字入力を行うことができ，片手で
文字入力が行えることとなる。2. Description of the Related Art In portable terminals such as PDAs and mobile phones, which are becoming smaller and lighter, it is necessary to input characters from operation keys or touch panels arranged in a limited space. In order to facilitate this character input, a mobile terminal such as a PDA having a handwriting input function using a touch panel is widely used. This handwriting input is performed with a dedicated pen or fingers (mainly the index finger), but it is usually necessary to use both hands. That is, holding the body of the mobile terminal with one hand and inputting handwriting with the other hand. In order to enable handwriting input with one hand, Japanese Patent Laid-Open No. 2000-278391 (hereinafter referred to as Publication 1) discloses a "mobile phone having a back surface handwriting function" provided with a touch panel on the back surface. As a result, it is possible to input characters with the index finger while holding the main body with a finger other than the index finger, and to input characters with one hand.
【０００３】[0003]
【発明が解決しようとする課題】しかしながら，前記公
報１に示される技術には，以下のような問題点があっ
た。即ち，タッチパネルが背面にあるため自分の指を目
視できず，自分の指がどの位置にあるかを確認すること
が難しいという問題点があった。このため，一筆書きで
書けない文字を入力する際，指を一旦タッチパネルから
離した後，次に触れる位置を決めることが難しい。ま
た，机上に置いた状態では操作できないという問題点も
あった。通常，携帯端末は手に持って操作するが，最近
の携帯端末は，例えば音楽再生や動画再生の機能等を有
し，これらの機能を利用する際は必ずしも手に持つ必要
がなく，机上に置いて操作できないのは不便である。さ
らに，タッチパネルを設けた携帯端末の幅が比較的広い
場合であって，これを片手で操作する場合は，タッチパ
ネルを操作する指の移動可能範囲が狭くなり，タッチパ
ネル上の所定の位置に指が届きにくくなるという問題点
もあった。即ち，図７（ａ）に示すように，手のひらに
収まる程度の幅の携帯端末の場合，その背面上部に設け
られたタッチパネルを操作するには，タッチパネルを操
作する人差し指が，タッチパネルの全エリアに届く適当
な位置となるように，本体を保持する他の指の位置を決
めることができる。しかし，図１２（ａ）に示すように
携帯端末の幅が比較的広い場合，これを片手で保持する
には端部（右利きの場合は右端部）を持たねばならず，
この状態ではタッチパネル上で人差し指を動かせる範囲
が狭くなる。図１２（ａ）の例では，特に，前面から見
て左上部のエリアに指が届きにくい。無理に届かそうと
指を伸ばすと，指先だけでなく人差し指全体がタッチパ
ネルに触れてしまい，正常に入力できない。また，タッ
チパネルの単位面積あたりの分解能を高めて操作面の大
きさを小さくすることにも，指の太さとの関係で制約が
ある。従って，本発明は上記事情に鑑みてなされたもの
であり，その目的とするところは，タッチパネルを背面
から操作可能な携帯端末において，タッチパネルの操作
位置が確認できるとともに，机上に置いた状態でもタッ
チパネルを操作でき，さらに本体の幅が広い場合であっ
ても片手でのタッチパネルの操作が可能な携帯端末を提
供することにある。However, the technique disclosed in the publication 1 has the following problems. That is, since the touch panel is on the back side, it is difficult to visually check one's own finger, and it is difficult to confirm the position of one's finger. For this reason, when inputting a character that cannot be written with a single stroke, it is difficult to determine the position to touch next after releasing the finger from the touch panel once. There was also the problem that it could not be operated while it was placed on the desk. Usually, a mobile terminal is operated by holding it in a hand, but recent mobile terminals have, for example, a music playing function and a moving picture playing function. It is inconvenient to leave it unoperated. Further, when the width of the mobile terminal provided with the touch panel is relatively wide and the touch panel is operated with one hand, the movable range of the finger operating the touch panel becomes narrow and the finger is placed at a predetermined position on the touch panel. There was also a problem that it became difficult to reach. That is, as shown in FIG. 7 (a), in the case of a mobile terminal with a width that fits in the palm of the hand, in order to operate the touch panel provided on the upper part of the back surface, the index finger operating the touch panel must cover the entire area of the touch panel. Other fingers holding the body can be positioned so that they are in the proper position to reach. However, when the width of the mobile terminal is relatively wide as shown in FIG. 12 (a), in order to hold it with one hand, it must have an end (right end in the case of a right-handed person),
In this state, the range in which the index finger can be moved on the touch panel becomes narrow. In the example of FIG. 12A, it is particularly difficult for the finger to reach the upper left area when viewed from the front. When I stretched my finger to reach it forcibly, not only my fingertip but the entire index finger touched the touch panel, and I could not input normally. Further, increasing the resolution per unit area of the touch panel to reduce the size of the operation surface has a limitation in relation to the thickness of the finger. Therefore, the present invention has been made in view of the above circumstances, and it is an object of the present invention to confirm the operation position of a touch panel in a mobile terminal that can be operated from the rear side and to operate the touch panel even when placed on a desk. Another object of the present invention is to provide a mobile terminal that can operate the touch panel and can operate the touch panel with one hand even when the main body is wide.
【０００４】[0004]
【課題を解決するための手段】上記目的を達成するため
に本発明は，タッチパネルを具備する携帯端末であっ
て，前記タッチパネルが，該タッチパネルへの接触圧力
を検出する圧力検出手段を具備し，前記接触圧力に基づ
いて，前記タッチパネルを用いた操作モードを切り替え
るよう構成されてなることを特徴とする携帯端末であ
る。これにより，前記タッチパネルを軽く触れて操作す
るときと，強く押さえて操作するときとで，入力モード
が切り替わるので，タッチパネルの限られたスペース内
で多様な入力に対応できる。また，前記操作モードが，
データを入力するモード，又はカーソルを移動するモー
ドのいずれか一方又は両方を含むものが考えられる。こ
れにより，例えば，タッチパネルを軽く触れて操作した
ときは，カーソル移動によって操作位置を確認でき，そ
の確認を行った上で入力操作（強く押さえて操作）がで
きるので入力操作が容易となる。従って，前記タッチパ
ネルが，当該携帯端末の背面に設けられており，前記タ
ッチパネルの操作状況を目視できない場合であっても，
カーソルにより操作位置を確認できる。In order to achieve the above object, the present invention is a portable terminal having a touch panel, the touch panel including pressure detection means for detecting a contact pressure on the touch panel, The mobile terminal is configured to switch the operation mode using the touch panel based on the contact pressure. As a result, the input mode is switched between when the touch panel is touched lightly and when the touch panel is strongly pressed, so that various input operations can be performed within the limited space of the touch panel. In addition, the operation mode is
It is conceivable that it includes either one or both of a mode for inputting data and a mode for moving a cursor. As a result, for example, when the touch panel is touched lightly and operated, the operation position can be confirmed by moving the cursor, and the input operation (pressing strongly) can be performed after making the confirmation, which facilitates the input operation. Therefore, even when the touch panel is provided on the back surface of the mobile terminal and the operation status of the touch panel cannot be visually observed,
You can check the operation position with the cursor.
【０００５】また，例えば，前記タッチパネルを，前面
方向，側面方向，及び背面方向を向くように，回動可能
に設ける等により，前記タッチパネルを当該携帯端末の
少なくとも前面方向，側面方向，背面方向のうちの複数
の方向に向くよう移動可能に設けてもよい。これによ
り，使用状況に合わせて，操作しやすい位置に前記タッ
チパネルを移動させることができる。さらに，前記タッ
チパネルへの入力軌跡と，予め登録された文字のパター
ンとに基づいて文字認識を行う文字認識手段を具備し，
前記タッチパネルの向く方向に基づいて，前記タッチパ
ネルへの入力軌跡の座標を反転させるものも考えられ
る。これにより，例えば，前記タッチパネルを前面に向
けた場合と背面に向けた場合とで，同じ文字についての
タッチパネル上での入力軌跡が前記タッチパネルの操作
面において反対（左右対称，上下対称等）となっても，
同じ文字についての文字パターンを２種類登録する必要
がなくなる。Further, for example, the touch panel is rotatably provided so as to face the front direction, the side direction, and the rear direction, so that the touch panel can be at least in the front direction, the side direction, and the back direction of the portable terminal. It may be provided so as to be movable in a plurality of directions. As a result, the touch panel can be moved to a position where it can be easily operated according to the usage situation. Further, a character recognition means for recognizing a character based on an input trajectory on the touch panel and a previously registered character pattern is provided,
It is also conceivable that the coordinates of the input locus on the touch panel are inverted based on the direction in which the touch panel faces. As a result, for example, when the touch panel is turned to the front and the back is turned, the input loci on the touch panel for the same character are opposite (horizontal symmetry, vertical symmetry, etc.) on the operation surface of the touch panel. However,
It is not necessary to register two types of character patterns for the same character.
【０００６】[0006]
【発明の実施の形態】以下添付図面を参照しながら，本
発明の実施の形態及び実施例について説明し，本発明の
理解に供する。尚，以下の実施の形態及び実施例は，本
発明を具体化した一例であって，本発明の技術的範囲を
限定する性格のものではない。ここに，図１は本発明の
実施の形態に係る携帯端末Ａの前面及び背面から見た外
観の概略図，図２は本発明の実施の形態に係る携帯端末
Ａを構成するタッチパネルの構造を説明する図，図３は
本発明の実施の形態に係る携帯端末Ａの概略構成を表す
ブロック図，図４は本発明の実施の形態に係る携帯端末
Ａのタッチパネルによる文字入力処理の手順を表すフロ
ーチャート，図５は本発明の実施の形態に係る携帯端末
Ａにおける文字入力中の状態を説明する図，図６は本発
明の実施例に係る携帯端末Ｂの前面及び背面から見た外
観の概略図，図７は本発明の実施例に係る携帯端末Ｂに
おけるタッチパネルの操作状況を説明する図，図８は本
発明の実施例に係る携帯端末Ｂにおけるタッチパネルの
支持構造を表す概略図，図９は本発明の実施例に係る携
帯端末Ｂにおいて前面からタッチパネル入力をした場合
の文字の例を表す図，図１０は本発明の実施例に係る携
帯端末Ｂにおいて背面からタッチパネル入力をした場合
の文字の例を表す図，図１１は本発明の実施例に係る携
帯端末Ｂの文字認識の処理手順を表すフローチャート，
図１２は本発明の実施例に係る携帯端末Ｂ１を説明する
図である。BEST MODE FOR CARRYING OUT THE INVENTION Embodiments and examples of the present invention will be described below with reference to the accompanying drawings to provide an understanding of the present invention. It should be noted that the following embodiments and examples are merely examples embodying the present invention and are not of the nature to limit the technical scope of the present invention. Here, FIG. 1 is a schematic view of the external appearance of the mobile terminal A according to the embodiment of the present invention as seen from the front and back, and FIG. 2 shows the structure of the touch panel that constitutes the mobile terminal A according to the embodiment of the present invention. FIG. 3 is an explanatory diagram, FIG. 3 is a block diagram showing a schematic configuration of the mobile terminal A according to the embodiment of the present invention, and FIG. 4 shows a procedure of character input processing by the touch panel of the mobile terminal A according to the embodiment of the present invention. FIG. 5 is a flow chart, FIG. 5 is a diagram for explaining a state during character input in the mobile terminal A according to the embodiment of the present invention, and FIG. FIG. 7 is a diagram for explaining the operation status of the touch panel in the mobile terminal B according to the embodiment of the present invention, and FIG. 8 is a schematic diagram showing the support structure of the touch panel in the mobile terminal B according to the embodiment of the present invention, FIG. Is an embodiment of the present invention. FIG. 10 is a diagram showing an example of characters when a touch panel is input from the front of the mobile terminal B, and FIG. 10 is a diagram showing an example of characters when a touch panel is input from the back of the mobile terminal B according to the embodiment of the present invention. 11 is a flowchart showing a processing procedure of character recognition of the mobile terminal B according to the embodiment of the present invention,
FIG. 12 is a diagram for explaining the mobile terminal B1 according to the embodiment of the present invention.
【０００７】図１に示すように，本発明の実施の形態に
係る携帯端末Ａは，その前面に液晶画面１が，その背面
にタッチパネル２が設けられ，その他不図示の電源ボタ
ン等のその他操作部も設けられている。前記タッチパネ
ル２は，その操作面を操作することにより，操作した
（指等で押さえた）位置の座標を検出するとともに，操
作したときの接触圧力（以下，入力圧力という）も検出
するものであり，例えば，特表平１０−５１１１９８号
公報（公報２）に示されるタッチスクリーン等である。
前記タッチパネル２は，前記タッチスクリーン以外であ
っても，例えば小型の圧力センサーをマトリックス状に
敷き詰めたパネル等，操作した位置の座標及び前記入力
圧力を検出できるものであれば他のものでもかまわな
い。前記タッチスクリーンは，図２に示すようにパネル
２２の四隅に歪ゲージセンサー２１が設けられたもので
ある。前記パネル２２のある１点が押さえられると，全
ての歪ゲージセンサー２１に力が加わるが，押さえられ
た位置に近い歪ゲージセンサー２１ほど大きな力が加わ
る。この４つの歪ゲージセンサー２１に加わる力の比率
によってどの位置（座標）が押さえられたかが検出され
る。また，４つの歪ゲージセンサー２１に加わる圧力の
合計によって前記入力圧力が検出される。その他詳しい
内容については，前記公報２に示されているのでここで
は説明を省略する。As shown in FIG. 1, a mobile terminal A according to an embodiment of the present invention is provided with a liquid crystal screen 1 on its front surface and a touch panel 2 on its back surface, and other operations such as a power button (not shown). A section is also provided. By operating the operation surface of the touch panel 2, the touch panel 2 detects the coordinates of the operated position (pressed with a finger or the like) and also detects the contact pressure (hereinafter referred to as input pressure) when operated. For example, a touch screen or the like disclosed in Japanese Patent Publication No. 10-511198 (Gazette 2).
The touch panel 2 may be other than the touch screen, and may be another panel as long as it can detect the coordinates of the operated position and the input pressure, such as a panel in which small pressure sensors are spread in a matrix. . The touch screen has a strain gauge sensor 21 provided at four corners of a panel 22 as shown in FIG. When one point on the panel 22 is pressed, a force is applied to all the strain gauge sensors 21, but a larger force is applied to the strain gauge sensors 21 closer to the pressed position. Which position (coordinates) is pressed is detected by the ratio of the forces applied to the four strain gauge sensors 21. The input pressure is detected by the total pressure applied to the four strain gauge sensors 21. Since other detailed contents are shown in the above-mentioned publication 2, the explanation is omitted here.
【０００８】次に，図３を用いて，携帯端末Ａの構成に
ついて説明する。端末装置Ａは，前記液晶画面１（ＬＣ
Ｄ），前記タッチパネル２，前記その他操作部３の他，
タッチパネル入力プロセッサ４，制御部５，及びバッフ
ァ６等から構成される。前記タッチパネル２は，前述し
たとおり，操作された位置（入力座標）及び前記入力圧
力（接触圧力）を検出し，前記タッチパネル入力プロセ
ッサ４に送る。前記タッチパネル入力プロセッサ４は，
不図示のＭＰＵ，主メモリ，ＲＯＭ等から構成され，前
記タッチパネル２から送られるデータを前記ＲＯＭに登
録されたプログラムに従って処理し，前記制御部５に送
る。さらに，前記タッチパネル２から送られる前記入力
座標に基づいて求めた，前記タッチパネル２上の操作位
置の軌跡データ（前記タッチパネル２上で文字等を描い
た際の軌跡データ）を前記バッファ６に格納し，該軌跡
データに基づいて文字認識を行う。前記制御部５は，不
図示のＭＰＵ，主メモリ，ＲＯＭ，不揮発性ＲＡＭ等か
ら構成され，前記タッチパネル入力プロセッサ４から送
られるデータ，前記バッファ６の前記軌跡データ，及び
前記その他操作部３からの入力に基づいて，各種処理を
行い，必要に応じて前記液晶画面１（ＬＣＤ）への表示
（描画）を行う。携帯端末Ａは，一般的な携帯端末が有
するその他の構成も有するが，特に本発明の特徴をなす
ものではないので，ここでは説明を省略する。Next, the configuration of the portable terminal A will be described with reference to FIG. The terminal device A has the liquid crystal screen 1 (LC
D), the touch panel 2, the other operation unit 3,
It is composed of a touch panel input processor 4, a control unit 5, a buffer 6 and the like. As described above, the touch panel 2 detects the operated position (input coordinates) and the input pressure (contact pressure) and sends them to the touch panel input processor 4. The touch panel input processor 4 is
It is composed of an MPU, a main memory, a ROM and the like (not shown), processes the data sent from the touch panel 2 according to the program registered in the ROM, and sends it to the control unit 5. Further, the buffer 6 stores the locus data of the operation position on the touch panel 2 (the locus data when a character or the like is drawn on the touch panel 2) obtained based on the input coordinates sent from the touch panel 2. Character recognition is performed based on the trajectory data. The control unit 5 is composed of an MPU, a main memory, a ROM, a non-volatile RAM and the like (not shown), and the data sent from the touch panel input processor 4, the trajectory data of the buffer 6, and the other operation unit 3 Various processes are performed based on the input, and display (drawing) on the liquid crystal screen 1 (LCD) is performed as necessary. The mobile terminal A has other configurations that a general mobile terminal has, but since it does not particularly form the feature of the present invention, the description thereof is omitted here.
【０００９】次に，図４を用いて，携帯端末Ａにおける
前記タッチパネル２からの入力の処理手順について説明
する。以下，Ｓ０１，Ｓ０２，，，は，処理手順（ステ
ップ）の番号を表す。また，図４の処理が開始される時
点で，前記タッチパネル２及び前記その他操作部３の所
定の操作により，手書き文字を入力するモードが選択さ
れた状態であるとする。まず，前記タッチパネル入力プ
ロセッサ４により，前記タッチパネルから入力座標及び
前記入力圧力を読み込み（Ｓ０１），該入力圧力のレベ
ルが「強」，「弱」，「無し（又は微弱）」のいずれで
あるかが判別（Ｓ０２）される。Ｓ０２において，前記
入力圧力が「弱」であると判別された場合，即ち，利用
者がタッチパネルに軽く触れて操作している場合はＳ２
１へ移行し，前記制御部５にＳ０１で得た前記入力座標
が送られ，前記制御部５によって，前記ＬＣＤ１上の前
記入力座標の位置に，カーソルを表示（移動）させた
後，Ｓ０１へ戻って処理を繰り返す。このようにして表
示されるカーソルの位置により，利用者は，現在触って
いる位置がどの位置であるのかを確認することができ
る。また，Ｓ０２において，前記入力圧力が「無し」で
あると判別された場合，即ち，利用者がタッチパネルか
ら指を離した場合は，前記制御部５に前記ＬＣＤ１上の
カーソルを消去する旨の指令が送られ，前記制御部５に
よりカーソルの表示が消去（Ｓ２１）される。また，Ｓ
０２において，前記入力圧力が「強」であると判別され
た場合はＳ０３へ移行し，Ｓ０１で得た前記入力座標が
前記ＬＣＤ１上の所定の確定操作エリア内に相当する座
標であるか否かが判別される。図５（ａ）に示すよう
に，前記確定操作エリア１１とは，前記ＬＣＤ１上の所
定のエリアであり，それまでに入力した文字（文字の軌
跡）を確定し文字認識を開始させるときに操作する操作
エリアである。Ｓ０３において，前記入力座標が前記確
定操作エリア１１内に相当する座標ではないと判別され
た場合は，Ｓ０４へ移行し，前記タッチパネル入力プロ
セッサ４により，前記入力座標に基づいて前記タッチパ
ネル１上での操作位置の軌跡データを求めて前記バッフ
ァ６に格納する。次に，Ｓ０５において，前記制御部５
により，前記バッファ６に格納された軌跡データに従っ
て，前記タッチパネル２上での操作の軌跡を前記ＬＣＤ
１に描画するとともに，前記入力座標に相当する位置に
カーソルを表示（移動）させた後，Ｓ０１へ戻って処理
を繰り返す。図５（ａ），（ｂ）は，以上の処理によ
り，ひらがなの「お」の字が入力されているときの前記
ＬＣＤ１の表示状態を示す。図５（ａ），（ｂ）の下部
に表示される「あ」の字は，既に入力が確定済みの文字
である。一方，Ｓ０３において，前記入力座標が前記確
定操作エリア１１内に相当する座標であると判別された
場合は，Ｓ０６へ移行し，前記タッチパネル入力プロセ
ッサ４により，該プロセッサ４の前記ＲＯＭに予め格納
された複数の文字のパターンデータと，前記バッファ６
に格納された前記軌跡データとのパターンマッチングを
行い，入力された文字を認識し，認識した文字を前記制
御部５により前記ＬＣＤ１に表示させる。図５（ｃ）
は，前記確定操作エリア１１が操作された状態を表し，
図５（ｄ）は，入力された文字（入力の軌跡）に相当す
る文字「お」が認識（Ｓ０６）されて，前記ＬＣＤ１の
下部に表示（Ｓ０７）された状態を表す。Next, with reference to FIG. 4, a processing procedure of input from the touch panel 2 in the portable terminal A will be described. Hereinafter, S01, S02, ... Represent the processing procedure (step) numbers. Further, it is assumed that the mode for inputting handwritten characters is selected by a predetermined operation of the touch panel 2 and the other operation unit 3 at the time when the process of FIG. 4 is started. First, the touch panel input processor 4 reads the input coordinates and the input pressure from the touch panel (S01), and the level of the input pressure is “strong”, “weak”, or “none (or weak)”. Is determined (S02). When it is determined in S02 that the input pressure is "weak", that is, when the user touches the touch panel lightly and operates it, S2
1, the input coordinates obtained in S01 are sent to the control unit 5, and the control unit 5 causes the cursor to be displayed (moved) at the position of the input coordinates on the LCD 1, and then to S01. Return and repeat the process. The position of the cursor displayed in this manner allows the user to confirm which position is currently being touched. Further, when it is determined in S02 that the input pressure is “none”, that is, when the user releases the finger from the touch panel, the control unit 5 is instructed to erase the cursor on the LCD 1. Is sent, and the display of the cursor is erased by the control unit 5 (S21). Also, S
In 02, if it is determined that the input pressure is “strong”, the process proceeds to S03, and it is determined whether or not the input coordinate obtained in S01 is a coordinate corresponding to a predetermined confirming operation area on the LCD 1. Is determined. As shown in FIG. 5A, the confirming operation area 11 is a predetermined area on the LCD 1, and is used when confirming the characters (trajectory of characters) input so far and starting character recognition. This is the operation area to be used. In S03, when it is determined that the input coordinates are not the coordinates corresponding to the confirmation operation area 11, the process proceeds to S04, and the touch panel input processor 4 causes the touch panel 1 to display the input coordinates based on the input coordinates. The locus data of the operation position is obtained and stored in the buffer 6. Next, in S05, the control unit 5
Thus, according to the trajectory data stored in the buffer 6, the trajectory of the operation on the touch panel 2 is displayed on the LCD.
After drawing (1) and displaying (moving) the cursor at a position corresponding to the input coordinate, the process returns to S01 and the process is repeated. 5 (a) and 5 (b) show the display state of the LCD 1 when the character "o" of the hiragana is input by the above processing. The character "a" displayed at the bottom of FIGS. 5A and 5B is a character whose input has already been confirmed. On the other hand, in S03, when it is determined that the input coordinates are the coordinates corresponding to the confirmation operation area 11, the process proceeds to S06 and is stored in the ROM of the processor 4 by the touch panel input processor 4 in advance. Pattern data of a plurality of characters and the buffer 6
Pattern matching is performed with the trajectory data stored in, the input character is recognized, and the recognized character is displayed on the LCD 1 by the control unit 5. FIG. 5 (c)
Represents a state in which the fixed operation area 11 is operated,
FIG. 5D shows a state in which the character "O" corresponding to the input character (input locus) is recognized (S06) and displayed on the lower part of the LCD 1 (S07).
【００１０】[0010]
【実施例】（応用例１）次に，図６を用いて，前記携帯
端末Ａの応用例である携帯端末Ｂについて説明する。携
帯端末Ｂは，タッチパネル２の操作圧力によって入力モ
ード（カーソル移動かデータ入力か）を切り替える機能
を有する点では，前記携帯端末Ａと同様であるが，タッ
チパネル２を前面方向からも操作可能にしたものであ
る。即ち，図６（ａ），（ｂ）に示すように，携帯端末
Ｂは，その前面に液晶画面１が設けられるとともに，当
該携帯端末Ｂの長手方向の軸を中心に回動自在のアーム
部２ａに設けられたタッチパネル２が，背面方向から前
面方向にかけて１８０°回動可能に設けられ，背面方向
及び前面方向で前記タッチパネル２を固定できるようス
トッパー（不図示）が設けられている。図６（ｂ）に示
すように，当該携帯端末Ｂの背面には，タッチパネル２
を嵌合させる凹部８が設けられ，タッチパネル２を背面
方向に回動させた場合に，該タッチパネル２の操作面と
当該携帯端末Ｂの背面とがフラットになるよう構成され
ている。また，図８に示すように，前記アーム部２ａ
は，該アーム部２ａを貫通する軸７により当該携帯端末
Ｂの本体部に回動可能に支持されており，前記アーム部
２ａに設けられた前記タッチパネル２を前面方向に回動
させたときに，該タッチパネル２の背面と当該携帯端末
Ｂの背面とがフラットになるよう構成されている。これ
により，前記タッチパネル２を前面方向，背面方向のい
ずれに向けた状態であっても，当該携帯端末Ｂを机上に
安定して置くことができる。他の構成については，前記
携帯端末Ａと同様である。当該携帯端末Ｂを手に持って
操作する場合は，図７（ａ）に示すように，前記タッチ
パネル２を背面方向に回動させ，本体部を人差し指以外
の指で支持しながら，人差し指で前記タッチパネル２を
操作する。また，当該携帯端末Ｂを机上に置いて操作す
る場合は，図７（ｂ）に示すように，前記タッチパネル
２を前面方向に回動させて該タッチパネル２を前面側か
ら操作する。このように，使用状況によって，前記タッ
チパネル２を背面からと前面からのいずれからでも操作
できるので便利である。なお，前記タッチパネル２の操
作圧力によって前記入力モードを切り替える処理は，図
４に示す処理と同様であるが，この他にも，例えば，前
記タッチパネル２の位置が背面方向，前面方向のいずれ
に向けられているかを判別し，背面方向に向けられてい
ると判別された場合にのみ前記操作圧力の判断（図４の
Ｓ０２）を行い，その他の場合にはＳ０１からＳ０３へ
移行するよう構成することも考えられる。ここで，前記
タッチパネル２の方向の判別は，例えば，当該携帯端末
Ｂの背面の前記凹部８に設けられるリミットスイッチ
（不図示）等からの入力により行う。(Application Example 1) Next, a mobile terminal B which is an application example of the mobile terminal A will be described with reference to FIG. The mobile terminal B is similar to the mobile terminal A in that it has a function of switching the input mode (cursor movement or data input) depending on the operation pressure of the touch panel 2, but the touch panel 2 can be operated from the front direction. It is a thing. That is, as shown in FIGS. 6A and 6B, the mobile terminal B is provided with the liquid crystal screen 1 on its front surface, and the arm portion is rotatable about the longitudinal axis of the mobile terminal B. A touch panel 2 provided on 2a is provided so as to be rotatable by 180 ° from the back surface direction to the front surface direction, and a stopper (not shown) is provided so that the touch panel 2 can be fixed in the back surface direction and the front surface direction. As shown in FIG. 6B, the touch panel 2 is provided on the back surface of the mobile terminal B.
Is formed so that the operation surface of the touch panel 2 and the back surface of the portable terminal B are flat when the touch panel 2 is rotated in the back direction. In addition, as shown in FIG.
Is rotatably supported on the main body of the portable terminal B by a shaft 7 penetrating the arm 2a, and when the touch panel 2 provided on the arm 2a is rotated in the front direction. The back surface of the touch panel 2 and the back surface of the mobile terminal B are configured to be flat. As a result, the mobile terminal B can be stably placed on the desk regardless of whether the touch panel 2 is in the front direction or the back direction. Other configurations are similar to those of the mobile terminal A. When operating the portable terminal B by holding it in the hand, as shown in FIG. 7A, the touch panel 2 is rotated in the back direction, and the main body is supported by a finger other than the index finger while the index finger is used. Operate the touch panel 2. When the portable terminal B is placed on a desk and operated, the touch panel 2 is rotated in the front direction to operate the touch panel 2 from the front side, as shown in FIG. 7B. Thus, it is convenient because the touch panel 2 can be operated from either the back side or the front side depending on the usage situation. The process of switching the input mode depending on the operation pressure of the touch panel 2 is the same as the process shown in FIG. 4, but in addition to this, for example, the position of the touch panel 2 is directed to either the back direction or the front direction. It is determined whether or not the operation pressure is applied, and the operation pressure is determined (S02 in FIG. 4) only when it is determined that the operation is directed to the back side, and in other cases, the process proceeds from S01 to S03. Can also be considered. Here, the direction of the touch panel 2 is determined by, for example, input from a limit switch (not shown) provided in the recess 8 on the back surface of the mobile terminal B.
【００１１】次に，図９，図１０を用いて，前記タッチ
パネル２に入力される文字の方向について説明する。前
記タッチパネル２を前面方向に回動させた状態（図７
（ｂ））で，前記タッチパネル２に，例えば文字「お」
を入力する場合，図９に示すように文字が前記タッチパ
ネル２の操作面に対して本来の向きで入力される。しか
しながら，前記タッチパネル２を背面方向に回動させた
状態（図７（ａ））で，文字「お」を入力する場合，図
１０（ａ）に示すように，当該携帯端末Ｂの前面側から
見て，本来の向きとなるように文字が入力されるため，
前記タッチパネル２の操作面に対しては，図１０（ｂ）
に示すように，本来の文字の向きとは左右反対の向きで
入力されることとなる。このため，前記タッチパネル２
への入力文字を，予め登録された文字パターンとのマッ
チングにより文字認識する場合，何ら工夫を講じなけれ
ば，同じ文字について背面入力用と前面入力用との２種
類の文字パターン（左右対称の文字パターン）を登録し
ておかなければならず，文字パターン用の記憶容量が２
倍必要となってしまう。Next, the directions of characters input to the touch panel 2 will be described with reference to FIGS. 9 and 10. The touch panel 2 is rotated in the front direction (see FIG. 7).
In (b)), for example, the character "O" is displayed on the touch panel 2.
When inputting, the characters are input in the original orientation with respect to the operation surface of the touch panel 2 as shown in FIG. However, when the character "O" is input in the state where the touch panel 2 is rotated in the back direction (Fig. 7 (a)), as shown in Fig. 10 (a), from the front side of the mobile terminal B, As you see, the characters are entered in the original direction, so
FIG. 10B shows the operation surface of the touch panel 2.
As shown in, the input is made in the direction opposite to the original direction of the character. Therefore, the touch panel 2
When recognizing the input character to the character by matching with the pre-registered character pattern, if no measures are taken, there are two kinds of character patterns for the same character, one for rear input and one for front input (symmetrical character). Pattern) must be registered, and the storage capacity for character patterns is 2
You will need it twice.
【００１２】そこで，図１１に示すように，前記タッチ
パネル入力プロセッサ４により，前述した文字認識の処
理（図４のＳ０６）において，前記軌跡データの座標の
左右反転（座標変換）を行う。即ち，まず，Ｓ６１にお
いて，前記タッチパネル２の位置が背面方向，前面方向
のいずれに向けられているかが判別される。これは，例
えば，当該携帯端末Ｂの背面の前記凹部８に設けられる
リミットスイッチ等からの入力により判別される。Ｓ６
１において，前記タッチパネル２が前面方向に向けられ
ていると判別された場合は，前記バッファ６から前記軌
跡データが読み出され（Ｓ６２），予め前記タッチパネ
ル入力プロセッサ４の前記ＲＯＭに登録された前記文字
パターンとのマッチング（Ｓ６３）が行われることによ
って文字が確定（Ｓ６４）される。一方，Ｓ６１におい
て，前記タッチパネル２が背面方向に向けられていると
判別された場合は，前記バッファ６から前記軌跡データ
が左右反転して読み出され（Ｓ６５）た後，前記文字パ
ターンとのマッチング（Ｓ６３）による文字の確定（Ｓ
６４）が行われる。前記左右反転は，例えば，前記軌跡
データの読み出す順序を，通常は左側の座標のデータか
ら読み出すところを，右側の座標データから読み出すこ
と等により，横方向の座標の反転を行う。また，本携帯
端末Ｂでは，前記タッチパネル２を本体の右端部に回動
可能に設けているが，例えば，本体の上端部に回動可能
に設けた場合は，前記タッチパネル２に入力される前記
軌跡データは，前面方向と背面方向とで上下反転の関係
となるため，この場合は，Ｓ６５において，上下反転し
て前記軌跡データが読み出されるよう構成する。これに
より，同じ文字について前記文字パターンを複数登録す
る必要がなくなる。Therefore, as shown in FIG. 11, the touch panel input processor 4 performs horizontal reversal (coordinate conversion) of the coordinates of the trajectory data in the above-described character recognition processing (S06 in FIG. 4). That is, first, in S61, it is determined whether the position of the touch panel 2 is directed toward the back surface or the front surface. This is determined, for example, by an input from a limit switch or the like provided in the recess 8 on the back surface of the mobile terminal B. S6
When it is determined that the touch panel 2 is directed to the front side in 1, the trajectory data is read from the buffer 6 (S62) and is registered in the ROM of the touch panel input processor 4 in advance. The character is determined (S64) by performing the matching with the character pattern (S63). On the other hand, if it is determined in S61 that the touch panel 2 is directed to the back side, the locus data is horizontally inverted and read from the buffer 6 (S65), and then matched with the character pattern. Confirmation of characters by (S63) (S
64) is performed. In the left-right inversion, for example, the order of reading the locus data is normally read from the coordinate data on the left side, but is read from the coordinate data on the right side. Further, in the present mobile terminal B, the touch panel 2 is rotatably provided on the right end portion of the main body. For example, when the touch panel 2 is rotatably provided on the upper end portion of the main body, the input to the touch panel 2 is performed. Since the trajectory data has a vertically inverted relationship between the front direction and the back direction, in this case, the trajectory data is read upside down at S65. This eliminates the need to register a plurality of character patterns for the same character.
【００１３】（応用例２）次に，図１２を用いて，前記
携帯端末Ｂの応用例である携帯端末Ｂ１について説明す
る。本携帯端末Ｂ１も前記携帯端末Ｂと同様，前記タッ
チパネル２が本体部に回動可能に設けられているが，前
記タッチパネル２を背面方向，側面方向，及び前面方向
の３方向から操作できるようにした点が異なる。図１２
（ａ）に示すように，携帯端末Ｂの本体の幅が比較的広
く手のひらに収まらない場合，これを片手で保持するに
は，前述したように端部（右利きの場合は右端部）を持
たねばならず，この状態ではタッチパネル上で人差し指
を動かせる範囲が狭くなる。そこで，図１２（ｂ）に示
すように，前記タッチパネル２にストッパー（不図示）
を設けることによって側面方向（例えば，背面方向から
９０°回動させた位置）でも固定できるようにすること
により，比較的幅の広い本体を片手で保持する場合であ
っても，人差し指を自然に動かせる範囲に前記タッチパ
ネル２が近づき，該タッチパネル上で人差し指を動かせ
る範囲が狭くならない。もちろん，各利用者の好みの位
置（向き）に前記タッチパネル２を固定できるよう構成
してもよい。また，前記タッチパネル２が側面方向を向
いている場合は，前面方向を向いている場合と文字入力
の向きが同じ（図９と同じ）となるので，前記軌跡デー
タの反転読み出しは行わないよう構成する。(Application Example 2) Next, a mobile terminal B1 which is an application example of the mobile terminal B will be described with reference to FIG. Like the mobile terminal B, the mobile terminal B1 is also provided with the touch panel 2 rotatably provided on the main body. However, the touch panel 2 can be operated from three directions: the back direction, the side direction, and the front direction. The difference is that 12
As shown in (a), when the width of the main body of the portable terminal B is relatively wide and does not fit in the palm, in order to hold it with one hand, as described above, the end portion (the right end portion in the case of a right-handed person) is You have to hold it, and in this state, the range where you can move the index finger on the touch panel becomes narrow. Therefore, as shown in FIG. 12B, a stopper (not shown) is provided on the touch panel 2.
By making it possible to fix even in the lateral direction (for example, the position rotated by 90 ° from the back direction), the index finger naturally moves even when holding a relatively wide main body with one hand. The touch panel 2 approaches the movable range, and the movable range of the index finger on the touch panel does not become narrow. Of course, the touch panel 2 may be fixed at a position (orientation) desired by each user. Further, when the touch panel 2 faces the side, the direction of character input is the same as when facing the front (the same as in FIG. 9), and therefore the reverse reading of the trajectory data is not performed. To do.
【００１４】[0014]
【発明の効果】以上説明したように，本発明によれば，
タッチパネルを背面から操作する場合であってもカーソ
ル表示によってタッチパネルを操作する指の位置の確認
ができる。また，タッチパネルを前面方向にも向くよう
にすることで，机上に置いた状態でもタッチパネルを操
作できる。さらに，タッチパネルを側面方向にも向くよ
うにすることで，タッチパネルを操作する指に近づける
ことができ，幅の広い本体を片手で保持しながら操作す
る場合であっても，タッチパネルを操作可能な範囲が狭
くならない。As described above, according to the present invention,
Even when the touch panel is operated from the back side, the position of the finger operating the touch panel can be confirmed by the cursor display. Also, by pointing the touch panel toward the front, the touch panel can be operated even when placed on a desk. Furthermore, by making the touch panel also face to the side, it is possible to bring it closer to the finger to operate the touch panel, and the range in which the touch panel can be operated even when operating while holding the wide body with one hand Does not become narrow.
【図１】本発明の実施の形態に係る携帯端末Ａの前面及
び背面から見た外観の概略図。FIG. 1 is a schematic view of the external appearance of a mobile terminal A according to an embodiment of the present invention as viewed from the front and back.
【図２】本発明の実施の形態に係る携帯端末Ａを構成す
るタッチパネルの構造を説明する図。FIG. 2 is a diagram illustrating a structure of a touch panel that constitutes the mobile terminal A according to the embodiment of the present invention.
【図３】本発明の実施の形態に係る携帯端末Ａの概略構
成を表すブロック図。FIG. 3 is a block diagram showing a schematic configuration of a mobile terminal A according to an embodiment of the present invention.
【図４】本発明の実施の形態に係る携帯端末Ａのタッチ
パネルによる文字入力処理の手順を表すフローチャー
ト。FIG. 4 is a flowchart showing a procedure of character input processing by the touch panel of the mobile terminal A according to the embodiment of the present invention.
【図５】本発明の実施の形態に係る携帯端末Ａにおける
文字入力中の状態を説明する図。FIG. 5 is a diagram illustrating a state during character input in the mobile terminal A according to the embodiment of the present invention.
【図６】本発明の実施例に係る携帯端末Ｂの前面及び背
面から見た外観の概略図。FIG. 6 is a schematic view of the external appearance of the mobile terminal B according to the embodiment of the present invention as viewed from the front and the back.
【図７】本発明の実施例に係る携帯端末Ｂにおけるタッ
チパネルの操作状況を説明する図。FIG. 7 is a diagram illustrating an operation status of a touch panel in the mobile terminal B according to the embodiment of the present invention.
【図８】本発明の実施例に係る携帯端末Ｂにおけるタッ
チパネルの支持構造を表す概略図。FIG. 8 is a schematic diagram showing a support structure of a touch panel in a mobile terminal B according to an embodiment of the present invention.
【図９】本発明の実施例に係る携帯端末Ｂにおいて前面
からタッチパネル入力をした場合の文字の例を表す図。FIG. 9 is a diagram illustrating an example of characters when a touch panel is input from the front surface of the mobile terminal B according to the embodiment of the present invention.
【図１０】本発明の実施例に係る携帯端末Ｂにおいて背
面からタッチパネル入力をした場合の文字の例を表す
図。FIG. 10 is a diagram showing an example of characters when touch panel input is performed from the rear surface of the mobile terminal B according to the embodiment of the present invention.
【図１１】本発明の実施例に係る携帯端末Ｂの文字認識
の処理手順を表すフローチャート。FIG. 11 is a flowchart showing a character recognition processing procedure of the mobile terminal B according to the embodiment of the present invention.
【図１２】本発明の実施例に係る携帯端末Ｂ１を説明す
る図。FIG. 12 is a diagram illustrating a mobile terminal B1 according to an embodiment of the present invention.
１…液晶画面（ＬＣＤ） ２…タッチパネル ２ａ…アーム部 ３…その他操作部 ４…タッチパネル入力プロセッサ ５…制御部 ６…バッファ ７…軸 ８…凹部 Ｓ０１，Ｓ０２，，，…処理手順（ステップ）の番号 1 ... Liquid crystal screen (LCD) 2 ... Touch panel 2a ... Arm part 3 ... Other operation part 4 ... Touch panel input processor 5 ... Control unit 6 ... buffer 7 ... Axis 8 ... Recess S01, S02, ... Processing procedure (step) number
Claims (7)
て，前記タッチパネルが，該タッチパネルへの接触圧力
を検出する圧力検出手段を具備し，前記接触圧力に基づ
いて，前記タッチパネルを用いた操作モードを切り替え
るよう構成されてなることを特徴とする携帯端末。1. A mobile terminal having a touch panel, wherein the touch panel includes pressure detection means for detecting a contact pressure on the touch panel, and an operation mode using the touch panel is determined based on the contact pressure. A mobile terminal configured to be switched.
ード，又はカーソルを移動するモードのいずれか一方又
は両方を含むものである請求項１に記載の携帯端末。2. The mobile terminal according to claim 1, wherein the operation mode includes one or both of a data input mode and a cursor movement mode.
面に設けられてなる請求項１又は２のいずれかに記載の
携帯端末。3. The mobile terminal according to claim 1, wherein the touch panel is provided on the back surface of the mobile terminal.
能に設けられてなることを特徴とする請求項１又は２の
いずれかに記載の携帯端末。4. The mobile terminal according to claim 1, wherein the touch panel is provided so that its orientation can be changed.
帯端末の前面方向，側面方向，背面方向のいずれかを選
択的に向き得るように設けられてなる請求項４に記載の
携帯端末。5. The mobile terminal according to claim 4, wherein the touch panel is provided so as to selectively face at least one of a front direction, a side direction, and a back direction of the mobile terminal.
向，及び背面方向を選択的に向き得るように，当該携帯
端末に回動可能に設けられた請求項５に記載の携帯端
末。6. The mobile terminal according to claim 5, wherein the touch panel is rotatably provided on the mobile terminal so that the touch panel can be selectively oriented in a front direction, a side direction, and a back direction.
登録された文字のパターンとに基づいて文字認識を行う
文字認識手段を具備し，前記タッチパネルの向く方向に
基づいて，前記タッチパネルへの入力軌跡の座標につい
て所定の座標変換を行うよう構成された請求項４から６
のいずれかに記載の携帯端末。7. A character recognition means for recognizing a character based on an input trajectory on the touch panel and a previously registered character pattern, and an input trajectory on the touch panel based on a direction in which the touch panel faces. 7. The method according to claim 4, wherein the coordinate conversion is performed for a predetermined coordinate.
The mobile terminal according to any one of 1.
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| JP2001249874A JP4587616B2 (en) | 2001-08-21 | 2001-08-21 | Mobile device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001249874A JP4587616B2 (en) | 2001-08-21 | 2001-08-21 | Mobile device |
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| Publication Number | Publication Date |
|---|---|
| JP2003058316A true JP2003058316A (en) | 2003-02-28 |
| JP4587616B2 JP4587616B2 (en) | 2010-11-24 |
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| JP2001249874A Expired - Fee Related JP4587616B2 (en) | 2001-08-21 | 2001-08-21 | Mobile device |
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