WO2000014704A1

WO2000014704A1 - Method and apparatus of spot scan image

Info

Publication number: WO2000014704A1
Application number: PCT/CN1999/000111
Authority: WO
Inventors: Yingui Zhou
Original assignee: Individual
Current assignee: Individual
Priority date: 1998-09-03
Filing date: 1999-08-11
Publication date: 2000-03-16
Anticipated expiration: 2001-03-03
Also published as: CN1312934A; AU5276899A

Abstract

The invention refers to a method and apparatus of spot scan image in which rotating spots are on different radii of the same center of a circle and the brightness of the rotating spot synchronistically corresponds to the brightness of respective pixel of picture so as to form a picture. The apparatus includes spots, a spot brightness controller and a spot rotational scanner. A spot rotational scanner has a motor, a shaft and a turntable which is fixed on the shaft. A spot brightness controller has a spot brightness control circuit and rotating transformers. The spot and spot brightness control circuit are fixed on the turntable. A driver circuit of the spot brightness control circuit and a turntable position sensor are connected with picture storage and processing circuit.

Description

光点扫描成像方法及其装置技术领域 Light spot scanning imaging method and device

本发明涉及图像显示技术领域的光点扫描成像方法及其装置。背景技术 The invention relates to a light spot scanning imaging method and a device thereof in the technical field of image display. Background technique

现有的图像显示设备中，主要有阴极射线显像管（CRT ) 、液晶显示器（LCD ) 和发光二极管（LED ) 显示屏。阴极射线显像管技术复杂、体积大、笨重。液晶显示器图像质量较差、成本高。发光二极管显示屏需要很多发光二极管（甚至几百万个），图像质量较差，故障率高，价格昂贵。而现有的大型动态图像显示设备中，主要有电视屏幕墙、发光二极管（LED ) 显示屏，电视屏幕墙是由多台显像管组合而成，图像质量好，但亮度低，技术复杂，价格昂贵。发光二极管（LED ) 大型显示屏所需的发光二极管太多，故障率高，图像质量较差，价格昂贵。发明的公开 The existing image display equipment mainly includes a cathode ray picture tube (CRT), a liquid crystal display (LCD), and a light emitting diode (LED) display screen. Cathode ray picture tube technology is complicated, bulky and heavy. LCD images have poor image quality and high cost. Light-emitting diode displays require many light-emitting diodes (even millions), poor image quality, high failure rates, and high prices. The existing large-scale dynamic image display equipment mainly includes a TV screen wall and a light emitting diode (LED) display screen. The TV screen wall is a combination of multiple picture tubes. The image quality is good, but the brightness is low, the technology is complicated, and the price is expensive. . Light-emitting diodes (LEDs) Large display screens require too many light-emitting diodes, high failure rates, poor image quality, and high prices. Disclosure of invention

本发明的目的在于提供一种图像质量好的光点扫描显示成像方法及其装置。 An object of the present invention is to provide a light spot scanning display imaging method with good image quality and a device thereof.

本发明采用以下方式实现： The present invention is implemented in the following ways:

一幅图像由许多像素点组成，将图像的各个像素点的亮度和色彩表现出来，就能显示出图像。本发明提供的光点扫描成像方法，其特征在于：在同一圆心的不同半径上设置光点，使光点围绕圆心旋转，旋转的光点在不同位置的亮度同步对应于图像相应像素点的亮度，而成像；径向设置的光点越多，扫描显示的图像分辨率越高；每个同心圆上设置多个光点，在相同旋转速度下，同心圆上分布光点越多，每秒钟对图像扫描的次数就越多，当旋转扫描的速度足够快时，就能显示出稳定的图像；用红、绿、蓝三种颜色的光点可扫描显示出全彩色图像，光点发光强度变化或发光时间长短变化都可使所成图像的像素点产生明暗变化；围绕同一圆心旋转的光点为一组，一组光点可以旋转扫描成像，不同圆心的多组旋转光点可各自扫描图像的相应部分，而构成完整的图像。 An image is composed of many pixels, and the brightness and color of each pixel of the image can be expressed to display the image. The light spot scanning imaging method provided by the present invention is characterized in that light spots are set on different radii of the same circle center, so that the light spots rotate around the circle center, and the brightness of the rotated light spots at different positions synchronously corresponds to the brightness of corresponding pixel points of the image And imaging; the more light spots set in the radial direction, the higher the resolution of the scanned image; multiple light spots are set on each concentric circle, and at the same rotation speed, the more light spots are distributed on the concentric circle, every second The more times the clock scans the image, the stable image can be displayed when the speed of the rotation scan is fast enough; the red, green, and blue light spots can be scanned to display a full-color image, and the light spots emit light Changes in the intensity or the change in the length of time can change the brightness and darkness of the pixels of the image; the light points rotating around the same center are a group, and a group of light points can be scanned and imaged. Multiple groups of rotating light points at different center can be individually The corresponding part of the image is scanned to form a complete image.

本发明的装置包括光点、光点亮度控制器和光点旋转扫描器，光点旋转扫描器由电机、转轴以及安装在转轴上的转盘构成，光点亮度控制器由光点亮度控制电路和旋转变压器构成，旋转变压器安装在电机的转轴上，光点和光点亮度控制电路固定在转盘上，光点以转轴的轴心为圆心分布在转盘的不同半径上，所述的光点亮度控制电路由图像存储处理电路、驱动电路、转盘位置传感器和整流稳压电路构成，驱动电路、转盘位置传感器分别与图像存储处理电路相连接，整流稳压电路为图像存储处理电路、驱动电路提供电源；光点是发光二极管或半导体激光器或本征场致发光灯；光点上可加装用来会聚光点发出的光的透镜；本发明装置还可包括透镜，透镜能将光点扫描所成的图像投射成像；旋转变压器 W 可用电刷替代；光点亮度控制电路的输出驱动部分还可以是脉宽调制电路；光点亮度控制电路的图像存储处理电路和驱动电路可以分开放置，即图像存储处理电路安装在支架上，驱动电路安装在转盘上，转盘位置传感器也安装在支架上。 The device of the present invention includes a light spot, a light spot brightness controller, and a light spot rotation scanner. The light spot rotation scanner is composed of a motor, a rotating shaft, and a turntable mounted on the rotating shaft. The light spot brightness controller includes a light spot brightness control circuit and a rotation. The transformer is composed of a resolver mounted on a rotating shaft of a motor, and a light spot and a light spot brightness control circuit are fixed on the turntable. The light spots are distributed on different radii of the turntable with the axis of the shaft as the center. The light spot brightness control circuit is composed of The image storage processing circuit, the driving circuit, the turntable position sensor and the rectifying and stabilizing circuit are constituted. The driving circuit and the turntable position sensor are respectively connected with the image storage processing circuit. The rectifying and stabilizing circuit provides power for the image storage processing circuit and the driving circuit; It is a light emitting diode or a semiconductor laser or an intrinsic electroluminescence lamp; a lens for condensing the light emitted by the light spot can be added to the light spot; the device of the present invention can further include a lens, and the lens can project an image formed by scanning the light spot Imaging; resolver W can be replaced by a brush; the output driving part of the light spot brightness control circuit can also be a pulse width modulation circuit; the image storage processing circuit and the driving circuit of the light spot brightness control circuit can be placed separately, that is, the image storage processing circuit is mounted on a bracket The drive circuit is installed on the turntable, and the turntable position sensor is also installed on the bracket.

一幅图像可以划分为多块，每块由相应的一组光点扫描出来，多组光点扫描所成的图像合在一起，便将这幅图像完整地显示出来。多个本发明提供的光点扫描成像装置拼在一起，每一个光点扫描成像装置扫描显示相应部分的图像，就构成一个大的光点扫描成像系统。 An image can be divided into multiple blocks, each of which is scanned out by a corresponding set of light spots. The images formed by the scanning of multiple sets of light spots are combined to display the image completely. Multiple light spot scanning imaging devices provided by the present invention are put together, and each light spot scanning imaging device scans and displays an image of a corresponding part to form a large light spot scanning imaging system.

采用本发明提供的光点扫描成像方法和装置所显示的图像，是由光点旋转扫描而成，图像清晰度高，对比度高，而且本发明结构轻巧，制造成本低。附图简要说明： The image displayed by using the light spot scanning imaging method and device provided by the present invention is obtained by rotating and scanning the light spot, and the image has high definition and high contrast, and the light weight structure of the present invention results in low cost. Brief description of the drawings:

附图 1 -A为本发明光点扫描成像装置结构示意图（主视图）；附图 1 -B为本发明光点扫描成像装置结构示意图（侧视图）；附图 2为光点亮度控制电路框图； Figure 1 -A is a schematic diagram of the light spot scanning imaging device of the present invention (front view); Figure 1 -B is a schematic diagram of the light spot scanning imaging device of the present invention (side view); Figure 2 is a block diagram of the light spot brightness control circuit ;

附图 3为光点亮度控制电路的电路图； Figure 3 is a circuit diagram of a light spot brightness control circuit;

附图 4为执行程序流程图。 Figure 4 is a flowchart of the execution procedure.

其中：图像信号 C 电源 S Among them: Image signal C Power S

光点 1 转盘 2 Light spot 1 turntable 2

接收二极管 4 光点亮度控制电路 3 Receiving diode 4 Light spot brightness control circuit 3

支架 5 旋转变压器 6、 7 Stand 5 resolver 6, 7

转轴 8 电机 9 Shaft 8 Motor 9

发射二极管 10 图像存储处理电路 1 1 驱动电路 12 转盘位置传感器 1 3 Emitting diode 10 Image storage processing circuit 1 1 Drive circuit 12 Turntable position sensor 1 3

整流稳压电路 14 微处理器 Rectifier Voltage Regulator 14 Microprocessor

数据寄存器 U₂〜U₉ 数摸转换器 U_n〜U _{l s} Data registers U _{2 to} U ₉ Digital converters U _n to U _ls

运算放大器 U _{1 9}〜U 发光二极管 Li〜L₈ 本发明的实施例 Operational amplifiers U _{1 9 to} U light emitting diodes Li to L ₈ embodiments of the present invention

下面结合附图及实施例对本发明的方法和装置作进一步的描述：参见附图，本发明提供的光点扫描成像装置包括光点 1、光点亮度控制器和光点旋转扫描器，光点旋转扫描器由电机 9、转轴 8以及安装在转轴 8上的转盘 2构成，光点亮度控制器由光点亮度控制电路 3和旋转变压器 6、 7构成，旋转变压器 6、 7安装在电机 9的转轴 8上，本实施例中旋转变压器 6、 7位于转盘 2与电机 9之间，光点 1和光点亮度控制电路 3固定在转盘 2上，光点 1以转轴 8的轴心为圆心分布在转盘 2的不同半径上，转盘 2 上安装接收二极管 4，支撑电机的支架 5上与接收二极管 4相对位置处安装发射二极管 1 0，所述的光点亮度控制电路 3由图像存储处理电路 1 1、驱动电路 12、转盘位置传感器 1 3和整流稳压电路 14构成，驱动电路 12、转盘位置传感器 13分别与图像存储处理电路 1 1相连接，整流稳压电路 14为图像存储处理电路 1 1、驱动电路 12提供电源，光点 1是发光二极管或半导体激光器或本征场致发光灯，本实施例采用发光二极管，数量为 8个。光点 1上可加透镜，用以会聚光点 1发出的光；本发明装置还可包括透镜，透镜可将光点 1扫描所成的图像通过透镜投射成像；旋转变压器 6、 7可用电刷替代；光点亮度控制电路 3的输出驱动部分还可以是脉宽调制电路。 The method and device of the present invention are further described below with reference to the accompanying drawings and embodiments. Referring to the drawings, the light spot scanning imaging device provided by the present invention includes a light spot 1, a light spot brightness controller, and a light spot rotation scanner. The scanner is composed of a motor 9, a rotating shaft 8, and a turntable 2 mounted on the rotating shaft 8. The light spot brightness controller is composed of a light spot brightness control circuit 3 and a resolver 6, 7. The resolver 6, 7 is installed on the rotate shaft of the motor 9. In the present embodiment, the resolvers 6, 7 are located between the turntable 2 and the motor 9, the light spot 1 and the light spot brightness control circuit 3 are fixed on the turntable 2, and the light spot 1 is distributed on the turntable with the axis of the rotation axis 8 as the center. On different radii of 2, the receiving diode 4 is installed on the turntable 2, and the bracket 5 supporting the motor is installed at a position opposite to the receiving diode 4. The emitting diode 10, the light spot brightness control circuit 3 is composed of an image storage processing circuit 11, a driving circuit 12, a turntable position sensor 13 and a rectification and stabilization circuit 14, the driving circuit 12, the turntable position sensor 13 and the image respectively The storage processing circuit 11 is connected in phase 1. The rectification and stabilization circuit 14 provides power for the image storage processing circuit 11 and the driving circuit 12. The light spot 1 is a light emitting diode or a semiconductor laser or an intrinsic electroluminescence lamp. In this embodiment, a light emitting diode is used. The number is 8. A lens may be added to the light spot 1 to condense the light emitted by the light spot 1. The device of the present invention may further include a lens, and the lens may project an image formed by scanning the light spot 1 through the lens; the resolvers 6, 7 may be powered by electricity Brush replacement; the output driving part of the light spot brightness control circuit 3 may also be a pulse width modulation circuit.

电机 9安装在支架 5上，转轴 8固定在电机 9的旋转轴上，由旋转轴带着转动；转轴 8还可以通过轴承固定在支架 5上，电机 9也可以通过皮带、齿轮或传动杆来带动转轴 8旋转。转盘 2安装在转轴 8上，并能随转轴 8的转动而转动，转盘 2的圆心与转轴 8的轴心重合，旋转变压器 6、 7也安装在转轴 8上，旋转变压器 6与整流稳压电路 14相连接，旋转变压器 7与图像存储处理电路 1 1相连接，光点 1 (本实施例为发光二极管）安装在转盘 2 上，并以转轴 8的轴心为圆心，分布在不同半径上（图 1 -A提供的是一种发光点在转盘 2上的分布图），光点亮度控制电路 3固定在转盘 2上，转盘位置传感器 13由一对红外发射、接收二极管构成，接收二极管 4固定在转盘 2上，发射二极管 10固定在支架 5上。 The motor 9 is mounted on the bracket 5, and the rotating shaft 8 is fixed on the rotating shaft of the motor 9 and rotated by the rotating shaft. The rotating shaft 8 can also be fixed on the bracket 5 through the bearing. The motor 9 can also be connected by a belt, a gear, or a transmission rod. Drive the rotating shaft 8 to rotate. The turntable 2 is mounted on the rotation shaft 8 and can rotate with the rotation of the rotation shaft 8. The center of the circle of the turntable 2 coincides with the axis of the rotation shaft 8. The resolvers 6, 7 are also installed on the rotation shaft 8. The rotation transformer 6 and the rectification and stabilization circuit 14 phases are connected, the resolver 7 is connected to the image storage processing circuit 1 1, and the light spot 1 (the light emitting diode in this embodiment) is installed on the turntable 2 and is centered on the axis of the rotation shaft 8 and is distributed on different radii ( Figure 1-A provides a distribution diagram of the light emitting points on the turntable 2). The light spot brightness control circuit 3 is fixed on the turntable 2. The turntable position sensor 13 is composed of a pair of infrared emitting and receiving diodes, and the receiving diode 4 is fixed. On the turntable 2, the emitting diode 10 is fixed on a bracket 5.

旋转变压器 6将电源 S藕合到整流稳压电路 14上，旋转变压器 7将图像信号 C送到图像存储处理电路 1 1的单片微处理器的串行输入口 P 3. 0 上，电机 9通过转轴 8带动转盘 2转动，使光点 1 (本实施例为发光二极管）、接收二极管 4旋转，当接收二极管 4转到与发射二极管 10相对应的位置时，就产生一个角度位置同步信号，并送到 11,的？_{3 7}上。 The resolver 6 couples the power source S to the rectification and stabilization circuit 14, the resolver 7 sends the image signal C to the serial input port P 3.0 of the single-chip microprocessor of the image storage processing circuit 1 1, and the motor 9 The rotation of the turntable 2 through the rotating shaft 8 causes the light spot 1 (the light emitting diode in this embodiment) and the receiving diode 4 to rotate. When the receiving diode 4 turns to a position corresponding to the transmitting diode 10, an angular position synchronization signal is generated. And sent to 11 ,? _{3 7} on.

微处理器按附图 4所示的执行程序进行操作：首先设置定时器和串行口中断，使定时器中断程序和串行口中断程序能够响应相应的中断，并置坐标位置计数器和角度位置计数器的初值，然后进入循环检测角度位置同步信号状态，当有角度位置同步信号（即 P3. 7=0 ) 时，将角度位置计数器置初值，然后循环检测；如没有角度位置同步信号，就继续循环检测。每隔一段时间，微处理器的定时器就会中断，当定时器中断发生时，微处理器响应定时器中断，执行定时器中断子程序：先读取角度位置计数器置的值，据此计算出此时各个发光点所处的坐标位置值，从其所处的坐标位置值所指存储区读取图像亮度信号值，输出亮度信号值到数据寄存器 L'₂〜U₉，将角度位置计数器加 1后，返回主程序。图像信号是通过串行口输入的，当有串行口中断发生时，微处理器 1^执行串行口中断程序：先读取串行口输入的图像信号值，判断是否第 1个图像信号，是，则置坐标位置计数器初值；否，则不改变坐标位置计数器的值，然后将图像信号存入由坐标位置计数器所指的存储区，将坐标位置计数器加 1后，返回主程序。 The microprocessor operates according to the execution program shown in Figure 4: First, set the timer and serial port interrupt, so that the timer interrupt program and serial port interrupt program can respond to the corresponding interrupt, and set the coordinate position counter and angle position. The initial value of the counter, and then enter the cycle detection angular position synchronization signal state. When there is an angular position synchronization signal (ie P3. 7 = 0), set the angular position counter to the initial value, and then perform a cyclic detection; if there is no angular position synchronization signal, Continue to cycle detection. At regular intervals, the microprocessor's timer is interrupted. When the timer interrupt occurs, the microprocessor responds to the timer interrupt and executes the timer interrupt subroutine: first read the value set by the angular position counter and calculate based on this Get the coordinate position value of each light emitting point at this time, read the image brightness signal value from the storage area indicated by its coordinate position value, output the brightness signal value to the data register L ' _{2 to} U ₉ , and set the angular position counter After adding 1, return to the main program. The image signal is input through the serial port. When a serial port interrupt occurs, the microprocessor 1 ^ executes the serial port interrupt program: first read the image signal value input from the serial port to determine whether the first image signal If yes, the initial value of the coordinate position counter is set; if no, the value of the coordinate position counter is not changed, and then the image signal is stored in the storage area pointed by the coordinate position counter. After the coordinate position counter is incremented by 1, it returns to the main program.

微处理器控制光点亮度变化的过程可描述为：微处理器^把接收到的图像信号存入芯片内相应于坐标位置的 RAM区，根据角度位置同步信号出现的时刻，计算出当时各个光点所处的坐标位置，从相应于坐标位置的 RAM区内取出相应的图像亮度信号值，送到数据寄存器 Ll₂〜U_g，由数模转换器 U _U〜U ₁₈完成 D/Λ数模转换，输出到功率驱动电路 1 2的运算放大器 U₁₉〜U₂₆上，来控制光点 1的1^〜1₈的亮度变化，使光点 1的亮度变化随需要显示的图像的像素点亮度变化而变化。 The process of controlling the brightness change of the light spot by the microprocessor can be described as: The microprocessor ^ stores the received image signal into a RAM area corresponding to the coordinate position in the chip, and synchronizes the signal according to the angular position. Number that appears in time, calculates the coordinate position of each spot was located, fetches the corresponding image luminance signal values from the RAM area corresponding to the coordinate position, to the data register Ll ₂ ~U _g, a digital-U _{U to U} ₁₈ completes D / Λ digital-to-analog conversion and outputs to the operational amplifiers U _{19 to} U ₂₆ of the power driving circuit 12 to control the brightness change of 1 ^ ~ ₁₈ of light spot 1 so that the brightness of light spot 1 The change varies with the brightness of the pixels of the image to be displayed.

旋转扫描速度足够快时，转盘上的光点 1就能扫描出清晰的图像。 When the rotation scanning speed is fast enough, the light spot 1 on the turntable can scan a clear image.

Claims

Rights request

1. A light spot scanning imaging method, characterized in that light spots are set on different radii of the same circle center, so that the light spots rotate around the circle center, and the brightness of the rotated light spots at different positions synchronously corresponds to the brightness of corresponding pixel points of the image While imaging.

2. The light spot scanning imaging method according to claim 1, characterized in that: a group of light spots rotating around the same center is a group, a group of light spots can be rotated and scanned for imaging, and a plurality of groups of rotating light spots of different center can be scanned separately The corresponding part of the image instead shows the full image.

3. The light spot scanning imaging method according to claim 1, characterized in that: a plurality of light spots can be set on each concentric circle.

4. The light spot scanning imaging method according to claim 1, wherein: the image is scanned with light spots of three colors of red, green, and blue to display a full-color image.

5. The light spot scanning imaging method according to claim 1, wherein: a change in the light emission intensity or a change in the light emission time of the light emitting point can change the brightness and darkness of the pixel point of the image.

6. The light spot scanning imaging device according to claim 1, comprising: a light spot, a light spot brightness controller, and a light spot rotating scanner, wherein the light spot rotating scanner comprises a motor, a rotating shaft, and a rotating disk mounted on the rotating shaft. The light spot brightness controller is composed of a light spot brightness control circuit and a resolver. The resolver is installed on the rotating shaft of the motor. The light spot and the light spot brightness control circuit are fixed on the turntable. The light spots are distributed on the turntable with the rotation axis as the center. On different radii, the light spot brightness control circuit is composed of an image storage processing circuit, a driving circuit, a turntable position sensor, and a rectifying and stabilizing circuit. The driving circuit and the turntable position sensor are respectively connected to the image storage processing circuit, and are rectified and stabilized. The circuit provides power for the image storage processing circuit and the driving circuit.

7. The light spot scanning imaging device according to claim 6, characterized in that: the image storage processing circuit and the driving circuit of the light spot brightness control circuit are placed separately, the image storage processing circuit is mounted on a bracket, and the driving circuit is mounted on a turntable. on.

8. The light spot scanning imaging device according to claim 6, wherein the light spot is a light emitting diode or a semiconductor laser or an intrinsic electroluminescence lamp.

9. The light spot scanning imaging device according to claim 6, characterized in that: a lens can be added to the light spot.

10. The light spot scanning imaging device according to claim 6, further comprising a lens.

1. The light spot scanning display imaging device according to claim 6, wherein the rotary transformer is replaced with a brush.