WO2012126193A1 - 一种影像键盘的生成方法和装置 - Google Patents

一种影像键盘的生成方法和装置 Download PDF

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Publication number
WO2012126193A1
WO2012126193A1 PCT/CN2011/073990 CN2011073990W WO2012126193A1 WO 2012126193 A1 WO2012126193 A1 WO 2012126193A1 CN 2011073990 W CN2011073990 W CN 2011073990W WO 2012126193 A1 WO2012126193 A1 WO 2012126193A1
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WIPO (PCT)
Prior art keywords
image
image keyboard
keyboard
infrared
key
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PCT/CN2011/073990
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English (en)
French (fr)
Inventor
张丹
Original Assignee
中兴通讯股份有限公司
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Publication date
Application filed by 中兴通讯股份有限公司 filed Critical 中兴通讯股份有限公司
Priority to US14/005,404 priority Critical patent/US20140002368A1/en
Priority to AU2011362920A priority patent/AU2011362920B2/en
Priority to EP11861644.0A priority patent/EP2672373A4/en
Publication of WO2012126193A1 publication Critical patent/WO2012126193A1/zh

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Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/048—Interaction techniques based on graphical user interfaces [GUI]
    • G06F3/0487—Interaction techniques based on graphical user interfaces [GUI] using specific features provided by the input device, e.g. functions controlled by the rotation of a mouse with dual sensing arrangements, or of the nature of the input device, e.g. tap gestures based on pressure sensed by a digitiser
    • G06F3/0488—Interaction techniques based on graphical user interfaces [GUI] using specific features provided by the input device, e.g. functions controlled by the rotation of a mouse with dual sensing arrangements, or of the nature of the input device, e.g. tap gestures based on pressure sensed by a digitiser using a touch-screen or digitiser, e.g. input of commands through traced gestures
    • G06F3/04886—Interaction techniques based on graphical user interfaces [GUI] using specific features provided by the input device, e.g. functions controlled by the rotation of a mouse with dual sensing arrangements, or of the nature of the input device, e.g. tap gestures based on pressure sensed by a digitiser using a touch-screen or digitiser, e.g. input of commands through traced gestures by partitioning the display area of the touch-screen or the surface of the digitising tablet into independently controllable areas, e.g. virtual keyboards or menus
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • 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
    • G06F3/0425—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by opto-electronic means using a single imaging device like a video camera for tracking the absolute position of a single or a plurality of objects with respect to an imaged reference surface, e.g. video camera imaging a display or a projection screen, a table or a wall surface, on which a computer generated image is displayed or projected
    • G06F3/0426—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by opto-electronic means using a single imaging device like a video camera for tracking the absolute position of a single or a plurality of objects with respect to an imaged reference surface, e.g. video camera imaging a display or a projection screen, a table or a wall surface, on which a computer generated image is displayed or projected tracking fingers with respect to a virtual keyboard projected or printed on the surface

Definitions

  • the present invention relates to the field of communications technologies, and in particular, to a method and an apparatus for generating an image keyboard. Background technique
  • the controllability and convenience of input of mobile phone keyboards are always the bottleneck for mobile phones to enter the real business office, entertainment and leisure. For example: It is easy to press the wrong button, the keyboard is small, and the controllability is deteriorated after a period of application.
  • the related technology enlarges the keyboard of the mobile phone or enlarges the manipulation space of the user by touching the keyboard with a horizontal screen to increase the comfort of the manipulation.
  • the main object of the present invention is to provide a method and a device for generating an image keyboard, which are used to solve the problem that the keyboard area is affected by the terminal volume and cannot be flexibly manipulated.
  • An image keyboard generating device comprising:
  • An infrared projection source module configured to project the emitted infrared light beam into an image keyboard
  • an image keyboard control module configured to scan the image keyboard, determine whether an infrared radiation change occurs in a key shadow area of a key position in the image keyboard, and Outputting scanned infrared radiation change information
  • the conversion module is configured to determine, according to the infrared radiation change information output by the image keyboard control module, a corresponding key position in the clicked image keyboard, and generate a keystroke command electrical signal of the corresponding key position.
  • the image keyboard control module includes:
  • Infrared camera unit used for selecting the key shadow area of the key position in the image area of the image keyboard and the basic infrared information of the operated object;
  • the infrared information collecting unit is configured to scan an image area of the image keyboard, and determine whether the infrared radiation change occurs in the key shadow area according to the basic infrared information of the operation object, and if the change occurs, the infrared radiation change information is stored in the data register.
  • the device also includes:
  • the image keyboard appearance adjustment module is configured to adjust at least one of an interface, a size, and a shape of the image keyboard image according to the input image keyboard adjustment information.
  • the conversion module is further configured to match the keystroke command electrical signal with a preset key interrupt module event processing message ID, and determine the input operation information according to the matching result.
  • the conversion module is further configured to:
  • Determining the time difference between two consecutive hits of the same key shadow zone if the time difference is less than the preset threshold, determining that the double click action; if the time difference is greater than the preset threshold, determining two consecutive click actions;
  • the operating object produces a continuous temperature difference between the infrared ray and the background area continuously emitted during the image area of the image keyboard, it is determined that the event action has been traversed.
  • An image keyboard generating method comprising:
  • the process of scanning the image keyboard, determining whether an infrared radiation change occurs in a key shadow area of a key position in the image keyboard, and outputting the scanned infrared radiation change information includes:
  • the key shadow area of the selected key position and the basic infrared information of the operated object are scanned; the image area of the image keyboard is scanned, and the infrared radiation change of the key shadow area is determined according to the basic infrared information of the operation object, if If a change occurs, the infrared radiation change information is stored in the data register.
  • the method further includes:
  • the method further includes: matching the keystroke command electrical signal with a preset key interrupt module event processing message ID, and determining operation information input by the user according to the matching result.
  • the method further includes: determining a time difference between two consecutive strokes of the same key shadow zone, and determining that the double-click action is performed if the time difference is less than a preset threshold; If it is greater than the preset threshold, it is determined to be two consecutive click actions;
  • the operating object produces a continuous temperature difference between the infrared ray and the background area continuously emitted during the image area of the image keyboard, it is determined that the event action has been traversed.
  • a mobile terminal including a terminal body having a communication function, further comprising:
  • the device with an infrared projection source can emit an infrared beam that can be projected into an image keyboard.
  • the image keyboard can be easily and conveniently projected on the surface of a smooth object such as a desktop, so that the infrared signal released by the operator's action can be converted into a keystroke command and transmitted to the terminal for preliminary disengagement from the physical keyboard of the mobile phone.
  • FIG. 1 is a flowchart of a method for generating an image keyboard according to an embodiment of the present invention
  • FIG. 2 is a structural diagram of an image keyboard generating apparatus according to an embodiment of the present invention.
  • FIG. 3 is a structural diagram of an image keyboard control module according to an embodiment of the present invention. detailed description
  • An embodiment of the present invention provides a method for extending a terminal keyboard, the method comprising: exciting an infrared projection source, forming an image keyboard by using the projected infrared light beam; scanning the image keyboard to determine a key of each key position in the image keyboard Whether the infrared radiation change occurs in the shadow area, and outputting the scanned infrared radiation change information; determining, according to the infrared radiation change information, a corresponding key position in the image keyboard clicked by the user, generating a hit of the corresponding key position The key commands the electrical signal.
  • an embodiment of the present invention provides a method for extending a terminal keyboard, and the specific implementation steps include:
  • Step 101 After the system self-test is successful, the infrared projection source is excited, and the emitted infrared beam is projected on any plane to form an image keyboard;
  • the self-checking items include: checking whether the projection system, the infrared camera system, the signal conversion and processing system, etc. are working normally, and detecting whether the contents of the data register are cleared. The emptying action is performed each time the infrared keyboard function is activated.
  • the embodiment of the present invention further includes:
  • Step 102 Adjust the interface, size and shape of the image keyboard image according to the image keyboard adjustment information input by the user.
  • Step 103 Scan the image keyboard to determine whether an infrared radiation change occurs in a key shadow area of each key position in the image keyboard, and output the scanned infrared radiation change information;
  • Step 104 Determine, according to the infrared radiation change information, a corresponding key position in the image keyboard that is clicked by the user, and generate a keystroke command electrical signal of the corresponding key position.
  • the infrared information recorded in step 103 (the temperature of each key corresponding to the key shadow area is recorded as Tl, ⁇ 2... ⁇ , the infrared information temperature of the user's finger and skin is recorded as TO).
  • Tl the temperature of each key corresponding to the key shadow area
  • TO the infrared information temperature of the user's finger and skin
  • Step 105 Match the keystroke command electrical signal with a preset key interrupt module event processing message ID, and determine operation information input by the user according to the matching result.
  • the method further includes:
  • Determining the time difference between two consecutive hits of the same key shadow zone if the time difference is less than the preset threshold, determining that the double click action; if the time difference is greater than the preset threshold, determining two consecutive click actions;
  • the operating object produces a continuous temperature difference between the infrared ray and the background area continuously emitted during the image area of the image keyboard, it is determined that the event action has been traversed.
  • the image keyboard of the embodiment of the invention further includes a virtual infrared mouse area, and if the user performs a stroke operation in the area, the positioning operation of the mouse can be realized.
  • an embodiment of the present invention further provides an apparatus for extending a terminal keyboard, where the apparatus includes an infrared projection source module 201, an image keyboard control module 202, and a conversion module 203; wherein, the infrared projection source module 201 is used for Projecting the infrared beam emitted on a plane into an image keyboard;
  • An image keyboard control module 202 configured to scan the image keyboard, and determine the image keyboard Whether the infrared shadow of the key shadow area of each key changes, and outputs the scanned infrared radiation change information;
  • the conversion module 203 is configured to determine, according to the infrared radiation change information output by the image keyboard control module, a corresponding key position in the image keyboard that is clicked by the user, and generate a keystroke command electrical signal of the corresponding key position.
  • the apparatus of the embodiment of the present invention further includes:
  • the image keyboard appearance adjustment module 204 is configured to adjust the interface, size and shape of the image keyboard image according to the image keyboard adjustment information input by the user.
  • the conversion module of the device is further configured to match the keystroke command electrical signal with a preset key interruption module event processing message ID, and determine a user input operation according to the matching result. information.
  • the image keyboard control module 202 includes:
  • the infrared camera unit 301 is configured to select a key shadow area range of each key position and basic infrared information of the operated object in the image keyboard image area;
  • the infrared information collecting unit 302 is configured to scan an image area of the image keyboard, determine whether the infrared radiation change occurs in the key shadow area according to the basic infrared information of the operated object, and if the change occurs, store the infrared radiation change information into the data register. .
  • the conversion module 203 is further configured to determine a time difference between two consecutive strokes of the same key shadow zone, and if the time difference is less than a preset threshold, determine that the double click action is performed; If the time difference is greater than the preset threshold, it is determined to be two consecutive click actions; and, the continuous temperature difference between the infrared rays continuously emitted by the operated object in the image keyboard image area and the infrared region of the background may be determined. , determine the action of the event.
  • An embodiment of the present invention further provides a mobile terminal, including a terminal body having a communication function, Also included is the above image keyboard generating device.
  • the method and apparatus provided by the embodiments of the present invention with an infrared projection source, project the emitted infrared beam into an image keyboard.
  • the image keyboard can be easily and conveniently projected on the surface of a smooth object such as a desktop, so that the infrared signal released by the operator's action can be converted into a keystroke command and transmitted to the terminal for preliminary disengagement from the physical keyboard of the mobile phone.
  • visible light can be obliquely reflected on the desktop, and the interface color, keyboard size, and size of the keyboard image can be adjusted.
  • an infrared detection system may also be included. Since the illumination intensity of the virtual key shadow emitted by the projection system is greater than that of the adjacent non-projection area, the infrared information is limited only to the light and shadow area, and based on this, the infrared collection range can be accurately selected. On the other hand, the position of the keystroke point can be determined based on the temperature difference caused by the fingerprint and surrounding skin components.
  • a signal conversion system can also be included.
  • the infrared signal detection system determines the position of the keystroke point, and the signal conversion system converts the infrared signal into an electrical signal, and based on this, forms a user's manipulation command.
  • the method and apparatus provided by the embodiments of the present invention can emit an infrared beam that can be projected into an image keyboard.
  • the image keyboard can be easily and conveniently projected on the surface of a smooth object such as a desktop, so that the infrared signal released by the operator's action can be converted into a keystroke command and transmitted to the terminal for preliminary disengagement from the physical keyboard of the mobile phone.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Human Computer Interaction (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Multimedia (AREA)
  • Input From Keyboards Or The Like (AREA)
  • User Interface Of Digital Computer (AREA)
  • Position Input By Displaying (AREA)

Abstract

本发明公开了一种影像键盘生成方法和装置，应用于通信技术领域，均可将发射出的红外光束投射成影像键盘并扫描所述影像键盘，确定所述影像键盘中键位的键影区是否发生红外辐射变化，并输出扫描到的红外辐射变化信息；根据所述红外辐射变化信息，确定出被点击的所述影像键盘中的对应键位，产生所述对应键位的击键命令电信号。应用本发明提供的方法和装置，能够解决键盘面积受到终端体积影响而无法灵活操控的问题。

Description

一种影 4象键盘的生成方法和装置 技术领域
本发明涉及通信技术领域， 尤其涉及一种影像键盘的生成方法和装置。 背景技术
从手机发展的历史来看， 手机键盘的可操控性和输入的便捷性， 始终 是手机走向真正商务办公、 娱乐休闲、 居家旅游的瓶颈。 如： 容易按错键、 键盘小导致看不清、 应用一段时间之后可操控性变差。 针对上述情况， 相 关技术将手机键盘做大、 或者将键盘以横屏触摸的方式来放大用户的操控 空间， 用以增加操控的舒适感。
上述方法在一定程度上对于用户有所帮助， 但存在以下问题： 第一： 手机操作键盘的加大， 势必导致手机的体积增大， 重量增大， 给用户的使 用和灵活移动带来不便； 第二： 当应用常规物理键盘快速实现商务办公和 网游等快速交互操作时， 用户不得不一手拿着手机， 一手进行操作， 操控 十分不便。 发明内容
本发明的主要目的在于提供一种影像键盘的生成方法和装置， 用于解 决键盘面积受到终端体积影响而无法灵活操控的问题。
为了解决上述问题， 本发明的技术方案是这样实现的：
一种影像键盘生成装置， 该装置包括：
红外投射源模块， 用于将发射出的红外光束投射成影像键盘； 影像键盘控制模块， 用于扫描所述影像键盘， 确定所述影像键盘中键 位的键影区是否发生红外辐射变化， 并输出扫描到的红外辐射变化信息； 转换模块， 用于根据所述影像键盘控制模块输出的红外辐射变化信息， 确定出被点击的影像键盘中的对应键位， 产生所述对应键位的击键命令电 信号。
所述影像键盘控制模块包括：
红外摄像单元， 用于在影像键盘影像区选定键位的键影区范围和*** 作对象的基础红外信息；
红外信息釆集单元， 用于扫描影像键盘的影像区， 根据所述操作对象 的基础红外信息确定键影区是否发生红外辐射变化， 如果发生变化， 则将 红外辐射变化信息存入数据寄存器。
该装置还包括：
影像键盘外观调节模块， 用于根据输入的影像键盘调节信息调节影像 键盘影像的界面、 大小和形状中至少之一。
所述转换模块还用于将所述击键命令电信号与预设的键位中断模块事 件处理消息 ID进行匹配， 根据匹配结果确定输入的操作信息。
所述转换模块还用于：
确定敲击同一键影区连续两次的时间差， 如果时间差小于预先设定的 阔值， 则判定为双击动作； 如果时间差大于预先设定的阔值， 则判定为两 次连续的单击动作；
如果操作对象在影像键盘影像区划动过程中连续发出的红外线与背景 区域产生持续温差， 则判定为划过事件动作。
一种影像键盘生成方法， 该方法包括：
将发射出的红外光束投射成影像键盘并扫描所述影像键盘， 确定所述 影像键盘中键位的键影区是否发生红外辐射变化， 并输出扫描到的红外辐 射变化信息；
根据所述红外辐射变化信息， 确定出被点击的所述影像键盘中的对应 键位， 产生所述对应键位的击键命令电信号。
所述扫描所述影像键盘 , 确定所述影像键盘中键位的键影区是否发生 红外辐射变化， 并输出扫描到的红外辐射变化信息的过程包括：
在影像键盘影像区选定键位的键影区范围和***作对象的基础红外信 息； 扫描影像键盘的影像区， 根据所述操作对象的基础红外信息确定键影 区是否发生红外辐射变化， 如果发生变化， 则将红外辐射变化信息存入数 据寄存器。
投射所述影像键盘之后， 还包括：
根据输入的影像键盘调节信息， 调节影像键盘影像的界面、 大小和形 状中至少之一。
产生所述对应键位的击键命令电信号之后， 进一步包括： 将所述击键 命令电信号与预设的键位中断模块事件处理消息 ID进行匹配， 根据匹配结 果确定用户输入的操作信息。
确定出被点击的所述影像键盘中的对应键位之后， 进一步包括： 确定敲击同一键影区连续两次的时间差， 如果时间差小于预先设定的 阔值， 则判定为双击动作； 如果时间差大于预先设定的阔值， 则判定为两 次连续的单击动作；
如果操作对象在影像键盘影像区划动过程中连续发出的红外线与背景 区域产生持续温差， 则判定为划过事件动作。
一种移动终端， 包括具有通信功能的终端主体， 还包括：
权利要求 1至 5任一项所述的影像键盘生成装置。
本发明实施例提供的方法和装置， 带有红外投射源的装置， 发射出的 红外光束可投射成为影像键盘。 可以在桌面等平滑物体表面轻松方便地投 射出影像键盘， 以便将操作者动作所释放的红外线信号转化为击键命令， 并传输至终端， 用以初步脱离手机物理键盘的束缚。 附图说明
图 1为本发明实施例的影像键盘生成方法的流程图；
图 2为本发明实施例的影像键盘生成装置的结构图；
图 3为本发明实施例的影像键盘控制模块的结构图。 具体实施方式
本发明实施例提供一种扩展终端键盘的方法， 该方法包括： 激发红外 投射源， 利用投射出的红外光束形成影像键盘； 扫描所述影像键盘， 确定 所述影像键盘中每个键位的键影区是否发生红外辐射变化， 并输出扫描到 的红外辐射变化信息； 根据所述红外辐射变化信息， 确定出被用户点击的 所述影像键盘中的对应键位， 产生所述对应键位的击键命令电信号。
如图 1 所示， 本发明实施例提供一种扩展终端键盘的方法， 具体实现 步骤包括：
步骤 101 , 在***自检成功后， 激发红外投射源， 射出的红外光束投射 于任一平面上形成影像键盘；
所述自检的项目包括： 检查投影***、 红外线摄像***、 信号转换与 处理***等是否正常工作， 检测数据寄存器内容是否清空完毕。 所述清空 动作在每次启动红外键盘功能时候进行。
因为承载所述影像键盘的平面的大小和颜色都会对影像键盘的识别造 成影响， 所以需要根据所述平面的相关因素对影像键盘进行对应的调整， 所以本发明实施例还包括：
步骤 102,根据用户输入的影像键盘调节信息， 调节影像键盘影像的界 面、 大小和形状。
步骤 103 , 扫描所述影像键盘， 确定所述影像键盘中每个键位的键影区 是否发生红外辐射变化， 并输出扫描到的红外辐射变化信息；
为了更精确的确定用户是否对影像键盘进行了操作， 在确定用户手指 进入红外键影区后， 监测和统计投影键键位范围内的红外信息和用户手指、 皮肤的红外信息。
步骤 104,根据所述红外辐射变化信息， 确定出被用户点击的所述影像 键盘中的对应键位， 产生所述对应键位的击键命令电信号。
根据步骤 103 中所记录的红外信息 （每个键位对应键影区的温度记录 为 Tl、 Τ2... ... Τη, 用户手指、 皮肤的红外信息温度记录为 TO )。 当用户在 手指在不同键影区键位点击， 即可根据温差 Τη-Τ0= δ T确定用户是否对键 影区进行了操作。 根据现有的红外线探测器灵敏度， 在有温差出现时即确 定有击键动作， 是完全可行的。
步骤 105 ,将所述击键命令电信号与预设的键位中断模块事件处理消息 ID进行匹配， 根据匹配结果确定用户输入的操作信息。
在本发明实施例中， 为了实现对双击和划过操作的识别， 确定出被用 户点击的所述影像键盘中的对应键位之后， 进一步包括：
确定敲击同一键影区连续两次的时间差， 如果时间差小于预先设定的 阔值， 则判定为双击动作； 如果时间差大于预先设定的阔值， 则判定为两 次连续的单击动作；
如果操作对象在影像键盘影像区划动过程中连续发出的红外线与背景 区域产生持续温差， 则判定为划过事件动作。
另外， 本发明实施例的影像键盘中还包括虚拟红外滚鼠区域， 如果用 户在该区域进行划过操作， 则可实现对鼠标的定位操作。
如图 2所示， 本发明实施例还提供一种扩展终端键盘的装置， 该装置 包括红外投射源模块 201、 影像键盘控制模块 202和转换模块 203； 其中， 红外投射源模块 201 ,用于在任一平面上将发射出的红外光束投射成影 像键盘；
影像键盘控制模块 202, 用于扫描所述影像键盘， 确定所述影像键盘中 每个键位的键影区是否发生红外辐射变化， 并输出扫描到的红外辐射变化 信息；
转换模块 203 ,用于根据所述影像键盘控制模块输出的红外辐射变化信 息， 确定出被用户点击的所述影像键盘中的对应键位， 产生所述对应键位 的击键命令电信号。
因为承载面的大小和颜色都会对影像键盘的识别造成影响， 所以需要 根据承载面的相关因素对影像键盘进行对应的调整， 所以本发明实施例的 装置还包括：
影像键盘外观调节模块 204,用于根据用户输入的影像键盘调节信息调 节影像键盘影像的界面、 大小和形状。
为了实现影像键盘模块与终端的对应连接， 该装置的转换模块还用于 将所述击键命令电信号与预设的键位中断模块事件处理消息 ID进行匹配， 根据匹配结果确定用户输入的操作信息。
如图 3所示， 所述影像键盘控制模块 202包括：
红外摄像单元 301 ,用于在影像键盘影像区选定每个键位的键影区范围 和***作对象的基础红外信息；
红外信息釆集单元 302, 用于扫描影像键盘的影像区，根据所述***作 对象的基础红外信息确定键影区是否发生红外辐射变化， 如果发生变化， 则将红外辐射变化信息存入数据寄存器。
为了实现对影像键盘的单击和划过操作， 所述转换模块 203还用于确 定敲击同一键影区连续两次的时间差， 如果时间差小于预先设定的阔值， 则判定为双击动作； 如果时间差大于预先设定的阔值， 则判定为两次连续 的单击动作； 并且， 还可以通过***作对象在影像键盘影像区划动过程中 连续发出的红外线与背景的红外区域产生的持续温差， 确定划过事件动作。
本发明实施例还提供一种移动终端， 包括具有通信功能的终端主体， 还包括上述影像键盘生成装置。
本发明实施例提供的方法和装置， 带有红外投射源的装置， 将发射出 的红外光束投射成为影像键盘。 可以在桌面等平滑物体表面轻松方便地投 射出影像键盘， 以便将操作者动作所释放的红外线信号转化为击键命令， 并传输至终端， 用以初步脱离手机物理键盘的束缚。
实际应用中， 可将可见光斜射于桌面， 并结合桌面颜色调节键盘影像 的界面、 大小、 形状。
进一步地， 还可以包含红外线探测***。 由于投影***所发射的虚拟 键影的光照强度大于邻近无投影区域， 因此红外线信息仅限制在光影区域， 基于此可以准确选定红外线釆集范围。 另一方面， 可以根据指曱及周围皮 肤成份导致的温度差异确定击键点位置。
进一步地， 还可以包含信号转换***。 当手指点击桌面键影区时， 由 红外线探测***确定击键点位置后， 信号转换***将红外线信号转换为电 信号， 并基于此形成用户的操控命令。
可见， 本发明实施例提供的方法和装置， 带有红外投射源的装置， 发 射出的红外光束可投射成为影像键盘。 可以在桌面等平滑物体表面轻松方 便地投射出影像键盘， 以便将操作者动作所释放的红外线信号转化为击键 命令， 并传输至终端， 用以初步脱离手机物理键盘的束缚。 本发明的精神和范围。 这样， 倘若本发明的这些修改和变型属于本发明权 利要求及其等同技术的范围之内， 则本发明也意图包含这些改动和变型在 内。

Claims

权利要求书
1、 一种影像键盘生成装置， 其特征在于， 该装置包括：
红外投射源模块， 用于将发射出的红外光束投射成影像键盘； 影像键盘控制模块， 用于扫描所述影像键盘， 确定所述影像键盘中键 位的键影区是否发生红外辐射变化， 并输出扫描到的红外辐射变化信息； 转换模块， 用于根据所述影像键盘控制模块输出的红外辐射变化信息， 确定出被点击的影像键盘中的对应键位， 产生所述对应键位的击键命令电 信号。
2、 如权利要求 1所述的装置， 其特征在于， 所述影像键盘控制模块包 括：
红外摄像单元， 用于在影像键盘影像区选定键位的键影区范围和*** 作对象的基础红外信息；
红外信息釆集单元， 用于扫描影像键盘的影像区， 根据所述操作对象 的基础红外信息确定键影区是否发生红外辐射变化， 如果发生变化， 则将 红外辐射变化信息存入数据寄存器。
3、 如权利要求 1所述的装置， 其特征在于， 该装置还包括：
影像键盘外观调节模块， 用于根据输入的影像键盘调节信息调节影像 键盘影像的界面、 大小和形状中至少之一。
4、 如权利要求 1至 3任一项所述的装置， 其特征在于， 所述转换模块 还用于将所述击键命令电信号与预设的键位中断模块事件处理消息 ID进行 匹配， 根据匹配结果确定输入的操作信息。
5、 如权利要求 1至 3任一项所述的装置， 其特征在于， 所述转换模块 还用于：
确定敲击同一键影区连续两次的时间差， 如果时间差小于预先设定的 阔值， 则判定为双击动作； 如果时间差大于预先设定的阔值， 则判定为两 次连续的单击动作；
如果操作对象在影像键盘影像区划动过程中连续发出的红外线与背景 区域产生持续温差， 则判定为划过事件动作。
6、 一种影像键盘生成方法， 其特征在于， 该方法包括：
将发射出的红外光束投射成影像键盘并扫描所述影像键盘， 确定所述 影像键盘中键位的键影区是否发生红外辐射变化， 并输出扫描到的红外辐 射变化信息；
根据所述红外辐射变化信息， 确定出被点击的所述影像键盘中的对应 键位， 产生所述对应键位的击键命令电信号。
7、 如权利要求 6所述的方法， 其特征在于， 所述扫描所述影像键盘， 确定所述影像键盘中键位的键影区是否发生红外辐射变化， 并输出扫描到 的红外辐射变化信息的过程包括：
在影像键盘影像区选定键位的键影区范围和***作对象的基础红外信 息； 扫描影像键盘的影像区， 根据所述操作对象的基础红外信息确定键影 区是否发生红外辐射变化， 如果发生变化， 则将红外辐射变化信息存入数 据寄存器。
8、 如权利要求 6所述的方法， 其特征在于， 投射所述影像键盘之后， 还包括：
根据输入的影像键盘调节信息， 调节影像键盘影像的界面、 大小和形 状中至少之一。
9、 如权利要求 6至 8任一项所述的方法， 其特征在于， 产生所述对应 键位的击键命令电信号之后， 进一步包括： 将所述击键命令电信号与预设 的键位中断模块事件处理消息 ID进行匹配， 根据匹配结果确定用户输入的 操作信息。
10、 如权利要求 6至 8任一项所述的方法， 其特征在于， 确定出被点 击的所述影像键盘中的对应键位之后， 进一步包括：
确定敲击同一键影区连续两次的时间差， 如果时间差小于预先设定的 阔值， 则判定为双击动作； 如果时间差大于预先设定的阔值， 则判定为两 次连续的单击动作；
如果操作对象在影像键盘影像区划动过程中连续发出的红外线与背景 区域产生持续温差， 则判定为划过事件动作。
11、 一种移动终端， 包括具有通信功能的终端主体， 其特征在于， 还 包括：
权利要求 1至 5任一项所述的影像键盘生成装置。
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