CN108983999A - 数位笔 - Google Patents

数位笔 Download PDF

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CN108983999A
CN108983999A CN201810540276.7A CN201810540276A CN108983999A CN 108983999 A CN108983999 A CN 108983999A CN 201810540276 A CN201810540276 A CN 201810540276A CN 108983999 A CN108983999 A CN 108983999A
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penholder
pen
light source
pen core
panadaptor
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CN108983999B (zh
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姚柏宏
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Wonder Optical Co Ltd
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Wonder Optical Co Ltd
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    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/033—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor
    • G06F3/0354—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor with detection of 2D relative movements between the device, or an operating part thereof, and a plane or surface, e.g. 2D mice, trackballs, pens or pucks
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    • G06F3/0304—Detection arrangements using opto-electronic means
    • G06F3/0317—Detection arrangements using opto-electronic means in co-operation with a patterned surface, e.g. absolute position or relative movement detection for an optical mouse or pen positioned with respect to a coded surface
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
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    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
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    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/0416—Control or interface arrangements specially adapted for digitisers
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
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    • G02B5/30—Polarising elements
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    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B29/00—Combinations of cameras, projectors or photographic printing apparatus with non-photographic non-optical apparatus, e.g. clocks or weapons; Cameras having the shape of other objects
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
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    • G06F3/0321—Detection arrangements using opto-electronic means in co-operation with a patterned surface, e.g. absolute position or relative movement detection for an optical mouse or pen positioned with respect to a coded surface by optically sensing the absolute position with respect to a regularly patterned surface forming a passive digitiser, e.g. pen optically detecting position indicative tags printed on a paper sheet
    • G—PHYSICS
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    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/033—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor
    • G06F3/038—Control and interface arrangements therefor, e.g. drivers or device-embedded control circuitry
    • G—PHYSICS
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    • G06F—ELECTRIC DIGITAL DATA PROCESSING
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    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
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    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/042—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by opto-electronic means
    • G06F3/0421—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by opto-electronic means by interrupting or reflecting a light beam, e.g. optical touch-screen
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    • G06F2203/038—Indexing scheme relating to G06F3/038
    • G06F2203/0384—Wireless input, i.e. hardware and software details of wireless interface arrangements for pointing devices
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    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2203/00—Indexing scheme relating to G06F3/00 - G06F3/048
    • G06F2203/041—Indexing scheme relating to G06F3/041 - G06F3/045
    • G06F2203/04105—Pressure sensors for measuring the pressure or force exerted on the touch surface without providing the touch position
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2203/00—Indexing scheme relating to G06F3/00 - G06F3/048
    • G06F2203/041—Indexing scheme relating to G06F3/041 - G06F3/045
    • G06F2203/04106—Multi-sensing digitiser, i.e. digitiser using at least two different sensing technologies simultaneously or alternatively, e.g. for detecting pen and finger, for saving power or for improving position detection
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T2207/00—Indexing scheme for image analysis or image enhancement
    • G06T2207/10—Image acquisition modality
    • G06T2207/10048—Infrared image
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T7/00—Image analysis
    • G06T7/70—Determining position or orientation of objects or cameras
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V30/00—Character recognition; Recognising digital ink; Document-oriented image-based pattern recognition
    • G06V30/10—Character recognition
    • G06V30/14—Image acquisition
    • G06V30/142—Image acquisition using hand-held instruments; Constructional details of the instruments
    • G06V30/1423—Image acquisition using hand-held instruments; Constructional details of the instruments the instrument generating sequences of position coordinates corresponding to handwriting

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  • General Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Human Computer Interaction (AREA)
  • Optics & Photonics (AREA)
  • Position Input By Displaying (AREA)
  • Polarising Elements (AREA)

Abstract

本发明系一种数位笔，包含有一笔杆、一环形透镜组设于该笔杆内、一笔芯穿过该环形透镜组且与该笔杆同轴、一光源设于笔芯旁、一影像接收器设于该笔杆内且可接收该光源所发出光线的反射光、一微处理器可控制该光源且可接收该影像接收器之讯号并解析出该笔芯位置之座标资讯、一无线传输模组可将该座标资讯向外部传输、以及一电源。藉此，该数位笔不仅符合人们传统用笔习惯，同时又能将书写笔迹数位化，无需搭配复杂的影像校正算法来进行像差修正，可降低制造成本，极具市场竞争潜力。

Description

数位笔
技术领域
本发明与数位书写装置有关，特别是指一种笔芯位于笔杆中心轴线的数位笔。
背景技术
随着触控屏幕与电磁感应板技术日渐成熟，目前已经有可轻易在各类显示器上进行书写的电子化数位笔，但毕竟人们还是习惯于在传统纸张上书写，因此，目前市场上已经出现多款具备传统笔芯(如油墨笔或铅笔)之数位笔，为了结构设计上之方便性，这些数位笔采用了偏心笔头的设计，亦即笔芯偏离笔杆的中心轴线，如此虽可使影像撷取模组能获得较大范围之影像讯号，但偏心的笔头结构除了背离使用者的书写习惯外，影像撷取时更容易产生严重像差，因此需要搭配复杂的影像校正算法来进行像差修正，方能取得正确之影像讯号，以正确判读书写笔迹，但此举大幅增加数位笔之成本，不利市场普及。
因此，如何兼顾人们传统用笔习惯，同时又能提供书写数位化之功能，便成为业界亟待研发解决的课题。
发明内容
本发明之一目的在于提供一种数位笔，其笔芯位于笔杆之中心轴线，不仅符合人们传统用笔习惯，同时又能将书写笔迹数位化。
本发明之另一目的在于提供一种数位笔，无需搭配复杂的影像校正算法来进行像差修正，可降低制造成本，极具市场竞争潜力。
为了达成上述目的，本发明之数位笔包含有一笔杆、一环形透镜组、一笔芯、一光源、一影像接收器、一微处理器、一无线传输模组以及一电源。该笔杆具有一假想中心轴线以及一内部空间；该环形透镜组设于该笔杆的内部空间，该环形透镜组具有一轴孔供该假想中心轴线穿过，该环状透镜组之二侧分别为一物侧与一像侧；该笔芯位于该假想中心轴线且由该笔杆之内部空间向外伸出，该笔芯穿过该环形透镜组之轴孔且具有一外端凸露于该笔杆之外，该外端系位于该环形透镜组之物侧；该光源设于该笔杆之内部空间且位于该笔芯旁，可朝该笔芯之外端发出光线；该影像接收器设于该笔杆之内部空间且位于该环形透镜组之像侧，可接收该光源所发出光线的反射光；该微处理器设于该笔杆，可控制该光源且可接收该影像接收器之讯号并解析出该笔芯外端位置之座标资讯；该无线传输模组可将该座标资讯向外部传输；该电源设于该笔杆且电性连接于该光源、该影像接收器、该微处理器与该无线传输模组。
藉此，该数位笔不仅符合人们传统用笔习惯，同时又能将书写笔迹数位化，且无需搭配复杂的影像校正算法来进行像差修正，可降低制造成本，极具市场竞争潜力。
附图说明
第1图为本发明第一较佳实施例数位笔之示意图；
第2图为本发明第一较佳实施例数位笔的压力感测器之示意图；
第3图为本发明第二较佳实施例数位笔的压力感测器之示意图。
具体实施方式
以下藉由二较佳实施例配合图式，详细说明本发明的技术内容及特征，如第1图所示，系本发明第一较佳实施例所提供之数位笔1，包含有一笔杆10、一环形透镜组16、一笔芯22、一压力感测器26、二光源34、一影像接收器36、一存储器44、一微处理器48、一无线传输模组50以及一电源52。
该笔杆10具有一假想中心轴线A、一内部空间12、以及一开口14连通该内部空间12与外界。
该环形透镜组16设于该笔杆10的内部空间12，该环形透镜组16具有一个或一个以上之环形透镜，可将该等光源34发出的光线聚焦于该笔芯22之一外端24附近，亦可将来自该笔芯22外端24附近的入射光线成像于该影像接收器36，该环形透镜组16(与每一个环形透镜)具有一轴孔18供该假想中心轴线A穿过，该环状透镜组16之二侧分别为一物侧19与一像侧20。
该笔芯22设于该笔杆10之内部空间12，该笔芯22位于该假想中心轴线A且由该笔杆10之内部空间12经由该开口14向外伸出，该笔芯22穿过该环形透镜组16之轴孔18且具有该外端24凸露于该笔杆10之外，该外端24系位于该环形透镜组16之物侧19，该笔芯22并有一内端25位于该环形透镜组16之像侧20，该笔芯22可为墨水笔芯、铅笔芯或其他笔芯。
该压力感测器26与该微处理器48电性连接，该压力感测器26设于该笔杆10之内部空间12且贴抵于该笔芯22之内端25，用以感测来自该笔芯22之压力，该压力感测器26之设计有许多种态样，于本实施例中，该压力感测器26系一与该电源52电性连接之电容，如第2图所示，该电容具有一固定导板28、一活动导板30与一弹性件32，该活动导板30与该固定导板28之间留有一预定距离D且互相平行，该活动导板30与该弹性件32之一端连接，该弹性件32的另一端则与固设于该笔杆10的该固定导板28连接，于其他实施例该弹性件32的另一端可固定于该笔杆10的内壁，如此，该弹性件32可施予该活动导板30一朝向该笔芯22之内端25之弹力，使该活动导板30保持贴抵于该笔芯22之内端25。当该笔芯22之外端24接触到纸张或其他书写表面时，反作用力可传递至该活动导板30，改变该活动导板30与该固定导板28之间的距离而改变电容的大小，此电容改变之讯号可传递至该微处理器48来判断该反作用力的大小。
该等光源34设于该笔杆10之内部空间12且位于该笔芯22旁，可朝该笔芯22之外端24发出光线，该等光源34系二极管或其他发光元件，该光线可为可见光或不可见光(例如红外光或紫外光)，惟以不可见光为宜，于本实施例中，该等光源34位于该环形透镜组16的像侧20，所发出的光线可透过该环形透镜组16聚焦于该笔芯22的外端24附近，于其他实施例中，该等光源34可设于环形透镜组16的物侧19。
该影像接收器36设于该笔杆10之内部空间12且位于该环形透镜组16之像侧20，可接收该等光源34所发出光线的反射光以及来自该笔芯22的外端24附近的入射光。该影像接收器36具有一滤光片38以及一光感测件40，该滤光片38位于该环状透镜组16与该光感测件40之间，用以过滤入射光线中预定波长范围的光线，例如将入射光线中容易造成该光感测件40产生噪声的光波段滤除，仅让与该等光源34所发出光线同波长段的光线通过。该光感测件40可为电荷耦合元件(CCD)、互补式金属氧化物半导体(CMOS)或其他可感测光的元件。需特别说明的是，该影像接收器36之前方虽有该压力感测器26与该二光源24，然其尺寸或设置位置可加以调整，使得该环形透镜组16仍可顺利成像于该影像接收器36。
该存储器44与该影像接收器36之光感测件40、该微处理器48电性连接，用以暂时储存来自该影像接收器36的讯号供该微处理器48解析。惟该存储器44亦可不设，该影像接收器36的讯号可直接传输至该微处理器48。
该微处理器48设于该笔杆10之内部空间12，然亦可设于该笔杆10外部，可控制该等光源34启闭，且可接收该影像接收器36或该存储器44之讯号并运算解析出该笔芯22外端24位置之座标资讯。
该无线传输模组50可接收经该微处理器48解析之座标资讯，并向外部其他电子装置如电脑、手机等传输。
该电源52设于该笔杆10之内部空间12，然亦可设于该笔杆10外部，且该电源52电性连接于该压力感测器26、该等光源34、该影像接收器36、该存储器44、该微处理器48与该无线传输模组50。
使用者握持该数位笔在特定纸张或表面书写时，一旦该笔芯22接触到书写表面时，反作用力经由该笔芯22到达该压力感测器26，该压力感测器26的电容改变讯号被该微处理器48接收，该微处理器48控制该等光源34发光，为不干扰使用者该等光源34所发出的光以不可见光为宜，该不可见光可被书写表面构成坐标讯号图样之材料所吸收或反射，并产生一吸收或反射影像，此影像经由该环状透镜组16成像于具有前置滤光片38之该光感测件40上，该光感测件40再将讯号传送至该存储器44暂存或直接给该微处理器48进行解析，即可撷取书写轨迹之坐标讯息，并透过该无线传输模组50向外传输。
其中，该环形透镜组16除了用以撷取坐标讯号图样外，更可将该等光源34之光照强度进行适当分布，该压力感测器26不仅可扮演触发该数位笔1进行影像撷取的角色，更可用来感知书写时所施加在该笔芯22上之力道，进而供该微处理器48推估笔触轻重与笔画粗细等书写细节。
由于本发明之数位笔1之笔芯22位于该假想中心轴线A上，不仅符合人们传统用笔习惯，同时又能将书写笔迹数位化，且无需搭配复杂的影像校正算法来进行像差修正，可降低制造成本，极具市场竞争潜力。
基于本发明之精神，该数位笔1之设计可加以改变，例如该压力感测器26可将电容式设计改为压电元件或光学式设计，如第3图所示，系本发明第二较佳实施例所提供之数位笔60，其压力感测器62具有一激光光源64、一接触片66、以及一影像感应器68，该激光光源64与电源(图未示)电性连接且可朝该接触片66发出激光，该接触片66系一光栅片，该接触片66贴抵于笔芯70之内端72，该影像感应器68与该电源电性连接且可感应由该接触片66反射之激光，藉此，该笔芯70接触书写表面的反作用力会造成该接触片66变形，并改变该激光的绕射位置而被该影像感应器68所撷取，并传递至微处理器(图未示)判断该反作用力的大小。于其他实施例，该接触片66可为一金属薄片，受到该笔芯70之作用力时，可发生变形而改变该激光的反射角度。
其他的变化如：该压力感测器可不设，利用该微处理器48判断该影像接收器36所接收的影像是否位于该环形透镜组16之焦点附近，亦可决定是否启动书写轨迹坐标讯息之撷取，举凡此等易于思及的设计变化，均应为本发明申请专利范围所涵盖。
【符号说明】
1数位笔
10笔杆 A假想中心轴线 12内部空间
14开口
16环形透镜组 18轴孔 19物侧
20像侧
22笔芯 24外端 25内端
26压力感测器 28固定导板 30活动导板
32弹性件 D距离
34光源
36影像接收器 38滤光片 40光感测件
44存储器 48微处理器 50无线传输模组
52电源
60数位笔 62压力感测器 64激光光源
66接触片 68影像感应器 70笔芯
72内端

Claims (10)

1.一种数位笔，包含有：
一笔杆，具有一假想中心轴线、以及一内部空间；
一环形透镜组，设于该笔杆的内部空间，该环形透镜组具有一轴孔供该假想中心轴线穿过，该环状透镜组之二侧分别为一物侧与一像侧；
一笔芯，位于该假想中心轴线且由该笔杆之内部空间向外伸出，该笔芯穿过该环形透镜组之轴孔且具有一外端凸露于该笔杆之外，该外端系位于该环形透镜组之物侧；
一光源，设于该笔杆之内部空间且位于该笔芯旁，可朝该笔芯之外端发出光线；
一影像接收器，设于该笔杆之内部空间且位于该环形透镜组之像侧，可接收该光源所发出光线的反射光；
一微处理器，设于该笔杆，可控制该光源且可接收该影像接收器之讯号并解析出该笔芯外端位置之座标资讯；
一无线传输模组，可将该座标资讯向外部传输；以及
一电源，设于该笔杆且电性连接于该光源、该影像接收器、该微处理器与该无线传输模组。
2.如权利要求1所述的数位笔，更包含有一压力感测器与该微处理器电性连接，该压力感测器设于该笔杆之内部空间且贴抵于该笔芯之一内端，用以感测来自该笔芯之压力。
3.如权利要求2所述的数位笔，其中该压力感测器系一与该电源电性连接之电容，该电容具有一固定导板、一活动导板与一弹性件，该活动导板与该固定导板之间留有一预定距离，该活动导板与该弹性件连接，该弹性件施予该活动导板一朝向该笔芯之内端之弹力，使该活动导板保持贴抵于该笔芯之内端。
4.如权利要求2所述的数位笔，其中该压力感测器具有一激光光源、一接触片、以及一影像感应器，该激光光源与该电源电性连接且可朝该接触片发出激光，该接触片贴抵于该笔芯之内端，该影像感应器与该电源电性连接且可感应由该接触片反射之激光。
5.如权利要求4所述的数位笔，其中该接触片系一光栅片。
6.如权利要求1所述的数位笔，其中该光源位于该环状透镜组的物侧或像侧。
7.如权利要求1所述的数位笔，其中该光源系一可发出不可见光的二极管。
8.如权利要求1所述的数位笔，其中该影像接收器具有一滤光片以及一光感测元件，该滤光片位于该环状透镜组与该光感测元件之间，用以过滤入射光线中预定波长范围的光线。
9.如权利要求1所述的数位笔，更包含有一存储器与该影像接收器、该微处理器电性连接，用以暂时储存该影像接收器的讯号供该微处理器解析。
10.如权利要求1所述的数位笔，其中该环形透镜组包含有一个或一个以上之环形透镜。
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