WO2022007138A1 - Photographing driving circuit of intelligent pen - Google Patents
Photographing driving circuit of intelligent pen Download PDFInfo
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- WO2022007138A1 WO2022007138A1 PCT/CN2020/110947 CN2020110947W WO2022007138A1 WO 2022007138 A1 WO2022007138 A1 WO 2022007138A1 CN 2020110947 W CN2020110947 W CN 2020110947W WO 2022007138 A1 WO2022007138 A1 WO 2022007138A1
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- 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
- G06F3/033—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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- 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
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
- H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/60—Control of cameras or camera modules
Abstract
A photographing driving circuit of an intelligent pen, relating to the technical field of intelligent pens, and comprising: a pressure sensor, wherein the pressure sensor is provided at the tip of the intelligent pen, and according to a press action of the intelligent pen, generates an intelligent pen activation signal; a processor, wherein the processor comprises a first interface, a second interface, and a third interface; a switching triode, wherein the base end of the switching triode is connected to the third interface, so as to generate a closing operation according to a driving signal; and a camera module, wherein the camera module is connected to the collector electrode of the switching triode and used for driving, after the switching triode generates the closing operation, a camera to transmit collected image information to the processor. The photographing driving circuit of the intelligent pen can quickly start a photographing information collection operation according to a pressure signal.
Description
本实用新型涉及智能笔技术领域，尤其涉及一种智能笔摄像驱动电路。The utility model relates to the technical field of a smart pen, in particular to a driving circuit for a camera of a smart pen.
书写是一种很奇妙的体验，在纸上书写永远有着一种魅力，即便是在信息化时代，人们总是渴望保存手写笔记的愿望。特别是在智慧教育方面，当电磁书写识别、红外点阵识别、超声波识别等黑科技融入到书写之中，便有了各式各样的智能书写笔。Writing is a wonderful experience. Writing on paper always has a charm. Even in the information age, people are always eager to save handwritten notes. Especially in the field of smart education, when electromagnetic writing recognition, infrared dot matrix recognition, ultrasonic recognition and other black technologies are integrated into writing, there are all kinds of smart writing pens.
智能笔作为智能笔的一种类型，可以在普通纸张上印刷一层不可见的点阵图案，数码笔前端的高速摄像头随时捕捉笔尖的运动轨迹，同时压力传感器将压力数据传回数据处理器，最终将信息通过蓝牙或者USB线向外传输。做到笔迹记录过程与书写过程同步。当书写时，点阵数码笔将纸张上书写的文字或者图片以位图的形式存储在电脑中，形成文档。As a type of smart pen, a smart pen can print a layer of invisible dot pattern on ordinary paper. The high-speed camera at the front of the digital pen captures the movement trajectory of the pen tip at any time, and the pressure sensor transmits the pressure data back to the data processor. Finally, the information is transmitted out through Bluetooth or USB cable. Synchronize the handwriting recording process with the writing process. When writing, the dot matrix digital pen stores the words or pictures written on the paper in the computer in the form of bitmaps to form documents.
智能笔在书写的过程中，需要设计摄像头实时的采集智能笔的书写轨迹，对于智能笔而言，考虑到其自身体积较小，亟需一种全新的结构简单、易维护且工作效率高的智能笔摄像驱动电路解决方案。During the writing process of the smart pen, a camera needs to be designed to collect the writing trajectory of the smart pen in real time. For the smart pen, considering its small size, a new type of simple structure, easy maintenance and high work efficiency is urgently needed. Smart pen camera driver circuit solution.
实用新型内容Utility model content
有鉴于此，本实用新型实施例提供了一种智能笔摄像驱动电路，用以通过硬件结构及硬件结构组合的方式，提供一种结构简单、易维护且工作效率高的智能笔摄像驱动电路解决方案，该智能笔摄像驱动电路包括：In view of this, the embodiments of the present invention provide a smart pen camera driving circuit, which is used to provide a smart pen camera driving circuit with a simple structure, easy maintenance and high work efficiency by means of hardware structure and hardware structure combination. The solution, the smart pen camera driving circuit includes:
本实用新型实施例提供了一种智能笔摄像驱动电路，包括：The embodiment of the present utility model provides a smart pen camera driving circuit, including:
压力传感器，所述压力传感器设置在所述智能笔的笔尖处，基于智能笔的按压动作，生成智能笔激活信号；a pressure sensor, which is arranged at the tip of the smart pen, and generates a smart pen activation signal based on the pressing action of the smart pen;
处理器，所述处理器包括第一接口、第二接口和第三接口，所述第一接口用于接收电源信号，所述第二接口与所述压力传感器连接，用于接收智能笔产生的激活信号，所述第三接口用于在处理器接收到激活信号之后，产生 摄像头驱动信号；A processor, the processor includes a first interface, a second interface and a third interface, the first interface is used for receiving a power signal, the second interface is connected with the pressure sensor, and is used for receiving the signal generated by the smart pen an activation signal, the third interface is used to generate a camera drive signal after the processor receives the activation signal;
开关三极管，所述开关三极管的基端与所述第三接口连接，以便于基于所述驱动信号产生闭合操作。A switching transistor, the base terminal of the switching transistor is connected to the third interface, so as to generate a closing operation based on the driving signal.
摄像头模块，所述摄像头模块与所述开关三极管的集电极连接，用于在所述开关三极管产生闭合操作之后，驱动摄像头将采集到的图像信息传递给所述处理器。A camera module, the camera module is connected to the collector of the switch triode, and is used for driving the camera to transmit the collected image information to the processor after the switch triode performs a closing operation.
根据本实用新型实施例的一种具体实现方式，还包括：According to a specific implementation manner of the embodiment of the present invention, it also includes:
接口端子，所述接口端子包括第一端口和第二端口，所述第一端口用于提供高电平电源信号，所述第一端口依次与第一电阻和第一电感连接，形成高电平供应点，所述第二端口提供地连接信号，所述第二端口通过第二电感与地连接。an interface terminal, the interface terminal includes a first port and a second port, the first port is used to provide a high-level power signal, and the first port is sequentially connected with the first resistor and the first inductor to form a high-level A supply point, the second port provides a ground connection signal, and the second port is connected to the ground through a second inductor.
根据本实用新型实施例的一种具体实现方式，还包括：According to a specific implementation manner of the embodiment of the present invention, it also includes:
变压转换芯片，所述变压转换芯片将高电平供应点处的高电平电源信号进行电平转换，形成转换电压；a voltage transformation and conversion chip, which performs level conversion on the high-level power supply signal at the high-level supply point to form a conversion voltage;
根据本实用新型实施例的一种具体实现方式，所述变压转换芯片的输出端与所述开关三极管的发射极连接。According to a specific implementation manner of the embodiment of the present invention, the output end of the voltage transformation chip is connected to the emitter of the switching transistor.
根据本实用新型实施例的一种具体实现方式，所述电压转换芯片将高电平供应点处的5V电压转换成3.3V电压。According to a specific implementation manner of the embodiment of the present invention, the voltage conversion chip converts the 5V voltage at the high-level supply point into a 3.3V voltage.
根据本实用新型实施例的一种具体实现方式，所述电压转换芯片的输入端与第一电容和第二电容的第一端连接，所述第一电容和第二电容的第二端接地。According to a specific implementation of the embodiment of the present invention, the input terminal of the voltage conversion chip is connected to the first terminal of the first capacitor and the second capacitor, and the second terminal of the first capacitor and the second capacitor is grounded.
根据本实用新型实施例的一种具体实现方式，所述电压转换芯片的输出端与第三电容和第四电容的第一端连接，所述第三电容和第四电容的第二端接地。According to a specific implementation manner of the embodiment of the present invention, the output end of the voltage conversion chip is connected to the first ends of the third capacitor and the fourth capacitor, and the second ends of the third capacitor and the fourth capacitor are grounded.
根据本实用新型实施例的一种具体实现方式，所述第一电阻的第一端与第一静电放电二极管的第一端连接，所述第一静电放电二极管的第二端与地连接。According to a specific implementation of the embodiment of the present invention, the first end of the first resistor is connected to the first end of the first electrostatic discharge diode, and the second end of the first electrostatic discharge diode is connected to the ground.
根据本实用新型实施例的一种具体实现方式，所述摄像头模块设置在所述智能笔的末端。According to a specific implementation manner of the embodiment of the present invention, the camera module is disposed at the end of the smart pen.
根据本实用新型实施例的一种具体实现方式，所述开关三极管的集电极依次通过第二电阻、发光二极管与所述摄像通连接，所述发光二极管用于指示摄像头是否处于工作状态。According to a specific implementation of the embodiment of the present invention, the collector of the switching transistor is connected to the camera through a second resistor and a light-emitting diode in sequence, and the light-emitting diode is used to indicate whether the camera is in a working state.
本实用新型实施例提供的智能笔摄像驱动电路，包括压力传感器，所述压力传感器设置在所述智能笔的笔尖处，基于智能笔的按压动作，生成智能笔激活信号；处理器，所述处理器包括第一接口、第二接口和第三接口，所述第一接口用于接收电源信号，所述第二接口与所述压力传感器连接，用于接收智能笔产生的激活信号，所述第三接口用于在处理器接收到激活信号之后，产生摄像头驱动信号；开关三极管，所述开关三极管的基端与所述第三接口连接，以便于基于所述驱动信号产生闭合操作；摄像头模块，所述摄像头模块与所述开关三极管的集电极连接，用于在所述开关三极管产生闭合操作之后，驱动摄像头将采集到的图像信息传递给所述处理器。通过本公开的方案，能够快速有效的对智能笔的书写轨迹进行图像采集操作。The smart pen camera driving circuit provided by the embodiment of the present invention includes a pressure sensor, the pressure sensor is arranged at the tip of the smart pen, and generates a smart pen activation signal based on the pressing action of the smart pen; a processor, the processing The device includes a first interface, a second interface and a third interface, the first interface is used to receive a power signal, the second interface is connected to the pressure sensor, and is used to receive an activation signal generated by a smart pen, the first interface is The three interfaces are used to generate a camera drive signal after the processor receives the activation signal; a switch transistor, the base end of the switch transistor is connected to the third interface, so as to generate a closing operation based on the drive signal; a camera module, The camera module is connected to the collector of the switching transistor, and is used for driving the camera to transmit the collected image information to the processor after the switching transistor is closed. Through the solution of the present disclosure, the image acquisition operation of the writing track of the smart pen can be performed quickly and effectively.
为了更清楚地说明本实用新型实施例的技术方案，下面将对实施例中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本实用新型的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其它的附图。In order to illustrate the technical solutions of the embodiments of the present invention more clearly, the accompanying drawings required in the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can also be obtained from these drawings without any creative effort.
图1为本实用新型实施例提供的一种智能笔摄像驱动电路的结构示意图；1 is a schematic structural diagram of a smart pen camera driving circuit according to an embodiment of the present invention;
图2为本实用新型实施例提供的一种摄像头模块在智能笔上的装配结构示意图。FIG. 2 is a schematic diagram of an assembly structure of a camera module on a smart pen according to an embodiment of the present invention.
下面结合附图对本实用新型实施例进行详细描述。The embodiments of the present utility model will be described in detail below with reference to the accompanying drawings.
应当明确，所描述的实施例仅仅是本实用新型一部分实施例，而不是全 部的实施例。基于本实用新型中的实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其它实施例，都属于本实用新型保护的范围。It should be understood that the described embodiments are only some, but not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present invention.
参见图1-2，本实用新型实施例提供了一种智能笔摄像驱动电路，包括压力传感器、处理器、开关三极管以及摄像头模块。1-2, an embodiment of the present invention provides a smart pen camera driving circuit, including a pressure sensor, a processor, a switching transistor, and a camera module.
压力传感器用力检测智能笔的压力操作，所述压力传感器设置在所述智能笔的笔尖处，基于智能笔的按压动作，生成智能笔激活信号。The pressure sensor forcefully detects the pressure operation of the smart pen, the pressure sensor is arranged at the tip of the smart pen, and generates a smart pen activation signal based on the pressing action of the smart pen.
处理器用来对检测到的信号进行处理，所述处理器包括第一接口a1、第二接口a2和第三接口a3，所述第一接口a1用于接收电源信号，所述第二接口a2与所述压力传感器连接，用于接收智能笔产生的激活信号，所述第三接口a3用于在处理器接收到激活信号之后，产生摄像头驱动信号。The processor is used to process the detected signal, the processor includes a first interface a1, a second interface a2 and a third interface a3, the first interface a1 is used for receiving power signals, the second interface a2 is connected to The pressure sensor is connected to receive an activation signal generated by the smart pen, and the third interface a3 is used to generate a camera driving signal after the processor receives the activation signal.
开关三极管Q1用于为摄像头模组提供电源供应，所述开关三极管Q1的基端与所述第三接口a3连接，以便于基于所述驱动信号产生闭合操作，从而打开或关闭摄像头模块的电源供应。The switch transistor Q1 is used to provide power supply for the camera module, and the base end of the switch transistor Q1 is connected to the third interface a3, so as to generate a closing operation based on the drive signal, thereby turning on or off the camera module. Power supply .
摄像头模块包括摄像头以及与摄像头连接的第二电阻R2和发光二极管D2，所述摄像头模块与所述开关三极管Q1的集电极连接，用于在所述开关三极管Q1产生闭合操作之后，驱动摄像头将采集到的图像信息传递给所述处理器。The camera module includes a camera, a second resistor R2 and a light-emitting diode D2 connected to the camera, the camera module is connected to the collector of the switching transistor Q1, and is used to drive the camera to collect the data after the switching transistor Q1 is closed. The received image information is passed to the processor.
根据本实用新型实施例的一种具体实现方式，还包括：According to a specific implementation manner of the embodiment of the present invention, it also includes:
接口端子，所述接口端子包括第一端口和第二端口，所述第一端口用于提供高电平电源信号，所述第一端口依次与第一电阻R1和第一电感L1连接，形成高电平供应点，所述第二端口提供地连接信号，所述第二端口通过第二电感L2与地连接。an interface terminal, the interface terminal includes a first port and a second port, the first port is used to provide a high-level power supply signal, and the first port is sequentially connected with the first resistor R1 and the first inductor L1 to form a high-level A level supply point, the second port provides a ground connection signal, and the second port is connected to the ground through a second inductor L2.
根据本实用新型实施例的一种具体实现方式，还包括：According to a specific implementation manner of the embodiment of the present invention, it also includes:
变压转换芯片，所述变压转换芯片将高电平供应点处的高电平电源信号进行电平转换，形成转换电压；a voltage transformation and conversion chip, which performs level conversion on the high-level power supply signal at the high-level supply point to form a conversion voltage;
根据本实用新型实施例的一种具体实现方式，所述变压转换芯片的输出端与所述开关三极管Q1的发射极连接。According to a specific implementation manner of the embodiment of the present invention, the output end of the voltage transformation chip is connected to the emitter of the switching transistor Q1.
根据本实用新型实施例的一种具体实现方式，所述电压转换芯片将高电平供应点处的5V电压转换成3.3V电压。According to a specific implementation manner of the embodiment of the present invention, the voltage conversion chip converts the 5V voltage at the high-level supply point into a 3.3V voltage.
根据本实用新型实施例的一种具体实现方式，所述电压转换芯片的输入端与第一电容C1和第二电容C2的第一端连接，所述第一电容C1和第二电容C2的第二端接地。According to a specific implementation of the embodiment of the present invention, the input terminal of the voltage conversion chip is connected to the first terminals of the first capacitor C1 and the second capacitor C2, and the first capacitor C1 and the second capacitor C2 Both ends are grounded.
根据本实用新型实施例的一种具体实现方式，所述电压转换芯片的输出端与第三电容C3和第四电容C4的第一端连接，所述第三电容C3和第四电容C4的第二端接地。According to a specific implementation of the embodiment of the present invention, the output end of the voltage conversion chip is connected to the first ends of the third capacitor C3 and the fourth capacitor C4, and the third capacitor C3 and the fourth capacitor C4 Both ends are grounded.
根据本实用新型实施例的一种具体实现方式，所述第一电阻R1的第一端与第一静电放电二极管D1的第一端连接，所述第一静电放电二极管D1的第二端与地连接。According to a specific implementation of the embodiment of the present invention, the first end of the first resistor R1 is connected to the first end of the first electrostatic discharge diode D1, and the second end of the first electrostatic discharge diode D1 is connected to the ground connect.
根据本实用新型实施例的一种具体实现方式，所述摄像头模块设置在所述智能笔的末端。According to a specific implementation manner of the embodiment of the present invention, the camera module is disposed at the end of the smart pen.
根据本实用新型实施例的一种具体实现方式，所述开关三极管Q1的集电极依次通过第二电阻R2、发光二极管D2与所述摄像通连接，所述发光二极管D2用于指示摄像头是否处于工作状态。According to a specific implementation of the embodiment of the present invention, the collector of the switching transistor Q1 is sequentially connected to the camera through the second resistor R2 and the light-emitting diode D2, and the light-emitting diode D2 is used to indicate whether the camera is working state.
在本实用新型的描述中，需要说明的是，术语“中心”、“上”、“下”、“左”、“右”、“竖直”、“水平”、“内”、“外”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本实用新型和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本实用新型的限制。此外，术语“第一”、“第二”、“第三”仅用于描述目的，而不能理解为指示或暗示相对重要性。In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner" and "outer" The orientation or positional relationship indicated by etc. is based on the orientation or positional relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, with a specific orientation. Therefore, it should not be construed as a limitation on the present invention. Furthermore, the terms "first", "second", and "third" are used for descriptive purposes only and should not be construed to indicate or imply relative importance.
在本实用新型的描述中，需要说明的是，除非另有明确的规定和限定，术语“安装”、“相连”、“连接”应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或一体地连接；可以是机械连接，也可以是电连接；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通。对于本领域的普通技术人员而言，可以具体情况理解上述术语在本实用新型中的具体含义。In the description of the present invention, it should be noted that, unless otherwise expressly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it may be a fixed connection or a connectable connection. Detachable connection, or integral connection; may be mechanical connection or electrical connection; may be direct connection, or indirect connection through an intermediate medium, or internal communication between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood in specific situations.
以上所述，仅为本实用新型的具体实施方式，但本实用新型的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本实用新型揭露的技术范围内，可轻易想到的变化或替换，都应涵盖在本实用新型的保护范围之内。因此，本实用新型的保护范围应以权利要求的保护范围为准。The above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art who is familiar with the technical field of the present invention can easily think of changes within the technical scope disclosed by the present invention. Or replacement should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.
通过本方案，能够基于压力信号快速开启摄像信息采集操作。With this solution, the camera information collection operation can be quickly started based on the pressure signal.
Claims (10)
- 一种智能笔摄像驱动电路，其特征在于，包括：A smart pen camera driving circuit, comprising:压力传感器，所述压力传感器设置在所述智能笔的笔尖处，基于智能笔的按压动作，生成智能笔激活信号；a pressure sensor, which is arranged at the tip of the smart pen, and generates a smart pen activation signal based on the pressing action of the smart pen;处理器，所述处理器包括第一接口、第二接口和第三接口，所述第一接口用于接收电源信号，所述第二接口与所述压力传感器连接，用于接收智能笔产生的激活信号，所述第三接口用于在处理器接收到激活信号之后，产生摄像头驱动信号；A processor, the processor includes a first interface, a second interface and a third interface, the first interface is used for receiving a power signal, the second interface is connected with the pressure sensor, and is used for receiving the signal generated by the smart pen an activation signal, the third interface is used to generate a camera drive signal after the processor receives the activation signal;开关三极管，所述开关三极管的基端与所述第三接口连接，以便于基于所述驱动信号产生闭合操作；a switching triode, the base end of the switching triode is connected to the third interface, so as to generate a closing operation based on the driving signal;摄像头模块，所述摄像头模块与所述开关三极管的集电极连接，用于在所述开关三极管产生闭合操作之后，驱动摄像头将采集到的图像信息传递给所述处理器。A camera module, the camera module is connected to the collector of the switch triode, and is used for driving the camera to transmit the collected image information to the processor after the switch triode performs a closing operation.
- 根据权利要求1所述的智能笔摄像驱动电路，其特征在于，还包括：The smart pen camera driving circuit according to claim 1, further comprising:接口端子，所述接口端子包括第一端口和第二端口，所述第一端口用于提供高电平电源信号，所述第一端口依次与第一电阻和第一电感连接，形成高电平供应点，所述第二端口提供地连接信号，所述第二端口通过第二电感与地连接。an interface terminal, the interface terminal includes a first port and a second port, the first port is used to provide a high-level power signal, and the first port is sequentially connected with the first resistor and the first inductor to form a high-level A supply point, the second port provides a ground connection signal, and the second port is connected to the ground through a second inductor.
- 根据权利要求2所述的智能笔摄像驱动电路，其特征在于，还包括：The smart pen camera driving circuit according to claim 2, further comprising:变压转换芯片，所述变压转换芯片将高电平供应点处的高电平电源信号进行电平转换，形成转换电压。A voltage transformation and conversion chip, which performs level conversion on a high-level power supply signal at a high-level supply point to form a conversion voltage.
- 根据权利要求3所述的智能笔摄像驱动电路，其特征在于：The smart pen camera driving circuit according to claim 3, wherein:所述变压转换芯片的输出端与所述开关三极管的发射极连接。The output end of the voltage transformation chip is connected to the emitter of the switching transistor.
- 根据权利要求4所述的智能笔摄像驱动电路，其特征在于：The smart pen camera driving circuit according to claim 4, wherein:所述电压转换芯片将高电平供应点处的5V电压转换成3.3V电压。The voltage conversion chip converts the 5V voltage at the high-level supply point into a 3.3V voltage.
- 根据权利要求5所述的智能笔摄像驱动电路，其特征在于：The smart pen camera driving circuit according to claim 5, wherein:所述电压转换芯片的输入端与第一电容和第二电容的第一端连接，所述第一电容和第二电容的第二端接地。The input terminal of the voltage conversion chip is connected to the first terminals of the first capacitor and the second capacitor, and the second terminals of the first capacitor and the second capacitor are grounded.
- 根据权利要求6所述的智能笔摄像驱动电路，其特征在于：The smart pen camera driving circuit according to claim 6, wherein:所述电压转换芯片的输出端与第三电容和第四电容的第一端连接，所述第三电容和第四电容的第二端接地。The output terminal of the voltage conversion chip is connected to the first terminals of the third capacitor and the fourth capacitor, and the second terminals of the third capacitor and the fourth capacitor are grounded.
- 根据权利要求7所述的智能笔摄像驱动电路，其特征在于：The smart pen camera driving circuit according to claim 7, wherein:所述第一电阻的第一端与第一静电放电二极管的第一端连接，所述第一静电放电二极管的第二端与地连接。The first end of the first resistor is connected to the first end of the first electrostatic discharge diode, and the second end of the first electrostatic discharge diode is connected to the ground.
- 根据权利要求8所述的智能笔摄像驱动电路，其特征在于：The smart pen camera driving circuit according to claim 8, wherein:所述摄像头模块设置在所述智能笔的末端。The camera module is arranged at the end of the smart pen.
- 根据权利要求9所述的智能笔摄像驱动电路，其特征在于：The smart pen camera driving circuit according to claim 9, wherein:所述开关三极管的集电极依次通过第二电阻、发光二极管与所述摄像通连接，所述发光二极管用于指示摄像头是否处于工作状态。The collector of the switching transistor is connected to the camera through a second resistor and a light-emitting diode in sequence, and the light-emitting diode is used to indicate whether the camera is in a working state.
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| CN202021309133.4 | 2020-07-07 | ||
| CN202021309133.4U CN212906230U (en) | 2020-07-07 | 2020-07-07 | Intelligent pen camera driving circuit |
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| WO2022007138A1 true WO2022007138A1 (en) | 2022-01-13 |
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| PCT/CN2020/110947 WO2022007138A1 (en) | 2020-07-07 | 2020-08-25 | Photographing driving circuit of intelligent pen |
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