KR100497519B1 - How to display on the screen - Google Patents

Abstract

The present invention relates to a method of displaying a screen of a real imager, and in particular, by storing a plurality of still images in a memory and displaying a sequential or arbitrary memory screen in a real imager so that the teaching materials can be explained without changing the teaching materials, thereby improving the educational effect. The purpose is to make it. The present invention for this purpose is a camera 200 for photographing educational material, a data editing unit 210 for clamping and editing the output signal (Y) (C) of the camera 200, and the data editing unit 210 A memory unit 230 storing output data, a memory control circuit 220 controlling data writing / reading of the memory unit 230, and a luminance Y and a color outputted from the memory control circuit 220. (C) The image display method of the real imager which consists of the data output part 240 which analog-converts a signal and outputs it as it is, or outputs a composite video signal by combining the brightness (Y) and the color (C) signal. Sequentially storing a plurality of image data in the memory unit 230 and inverting the image up, down, left and right or up, down, left and right simultaneously by a user's key operation, and editing the plurality of image data stored in any order. Read and display And based, and that the memory stores screen by a user's operation to display the image data, characterized by carrying out a stop, displaying a vertically and horizontally inverted, or at the same time, multi-screen display.

Description

Screen display method of physical imager

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a real imager, and more particularly, to a screen display method of a real imager.

1 is a perspective view showing a general physical imager, and as shown therein, the support 102 is mounted at a position close to one side of the textbook presentation stand 104 and the one side close to the position at which the support 102 is mounted. The lamps 103a and 103b are mounted on both sides, and the camera 101 is attached to the support 102 so as to image the educational material 105 placed on the textbook presentation table 104.

The lamps 103a and 103b are mounted for the case where the ambient light is small, so that the lamps 103a and 103b are turned on at the time of displaying the material on the screen during training or meeting so that the brightness of the teaching material presentation table 104 is always constant.

1 is a block diagram showing a screen display device of a conventional real imager. As shown in FIG. 1, a composite image signal CVBS or luminance (B) through imaging of a material 105 on a data presenting table 104 and predetermined signal processing is shown. Supplying operating power to the camera 101 for outputting Y) and color (C) signals, the signal switching unit 107 for outputting the output signal of the camera 101 to a TV or a projector, and the camera 108. And a key input unit 106 which outputs a key input signal for controlling the operation of the camera 101 and controls the on / off of the lamps 103a and 103b.

The camera 101 includes a lens 111 for condensing the light reflected from the data on the data presenting table 104, a CDC 112 for converting the optical signal of the lens 111 into an electrical signal, and A sampling / amplifying unit (CDS & AGC) 113 for sampling and amplifying the output signal of the CD 112 to a predetermined level, and an analog / digital converting the output signal of the sampling / amplifying unit 113 into a digital signal. The converter 114 and the output signal of the analog-to-digital converter 114 are digitally processed and then analog-converted to output luminance (Y) and color (C) signals, and to output vertical and horizontal synchronization signals (VD) (HD). A digital signal processor 115 for outputting a digital signal processor, an image mixer 116 for outputting a combined signal (Y) or a combination signal of the digital signal processor 115 as it is, and outputting a composite video signal; Vertical drive unit 117 for outputting a pulse for driving 112, the motor and the aperture of the lens 111 In the same manner, the lens motor / aperture driving unit 119, a timing generating unit 118 for generating timing signals for controlling the respective units, and an output signal from the key input unit 106 are received to determine a corresponding mode and generate the timing. The microcomputer 120 controls the respective units based on the timing signal of the unit 118.

Referring to the operation of the prior art as follows.

When the user turns on the power key at the key input unit 106, the power supply unit 108 supplies power to the camera 101 and the lamps 103a and 103b, and the lamp 103a at the key input unit 106. Turn 103b on or off.

In this case, the camera 101 converts the optical signal through the lens 111 into an electrical signal in the CD 112 and is sampled and amplified by the CDS / AGC 113 in the analog / digital converter 114. Is converted into a signal.

The digital conversion signal is digitally processed by the digital signal processing unit 115 and then analog converted and output as analog luminance (Y) and color (C) signals.

Thereafter, the mixer 116 combines the luminance (Y) and color (C) signals and outputs a composite video signal or outputs the respective luminance (Y) and color (C) signals.

Accordingly, the signal switching unit 108 outputs the output signal VIDEO of the mixer 116 to the TV or the projector to display the data image on the screen.

The vertical driver 117 outputs a pulse for driving the CD 111 by performing a level shift function, and the timing generator 118 generates various timing signals for controlling the operation of the camera 101. To the microcomputer 120.

In addition, the motor / iris driver 119 improves the resolution of the screen image by smoothly controlling the opening, closing, zooming, focusing, or aperture of the lens 111.

The microcomputer 120 controls operations of the sampling / amplifying unit 113, the digital signal processing unit 115, the lens motor / aperture driving unit 119, and the like based on the timing signal generated by the timing generating unit 119. Thus, the overall operation of the camera 101 is controlled.

However, the conventional technology is cumbersome because it is necessary to put educational materials on the present stage one by one, and to accurately position and align the orientation when placing the materials on the present stage, and to perform various key manipulations according to the materials during the presentation. There is a problem that the time is accompanied by a loss of time and the change of the screen is severe, as well as the educational effect.

Accordingly, the present invention has been devised so that a plurality of still screens can be stored in a memory and displayed sequentially or random memory screens in the real imager so as to be described without changing educational materials one by one, in particular, a memory screen. By reversing up, down, left, right, up, down, left, and right, it is possible to save the trouble of aligning educational materials in a certain direction. This is a method of displaying the actual imager's screen, which can improve the educational effect by allowing users to view inverted moving images without moving, and to display the sequential progress screen as a whole by displaying memory screens that are already stored on multiple screens at once. The purpose is to provide.

In order to achieve the above object, the present invention provides a real imager which transmits and displays an image captured by a camera to a TV or a projector, and stores a plurality of image data captured by the camera in a memory and is operated by a user's key operation. Editing the image by inverting the left, right, up, down, left and right simultaneously, displaying the plurality of image data stored above in an arbitrary order, and stopping the memory screen stored by the user's key operation when displaying the image data. Up, down, left, and right reverse or at the same time characterized in that the step consisting of displaying on multiple screens.

The present invention for performing the above steps is to take a training material and output a n-bit luminance and color signal through a predetermined signal processing, and the output signal of the camera by clamping the video signal reference pedestal signal A data editing unit for outputting an 8-bit luminance and color signal and simultaneously outputting a luminance synchronizing signal, a color synchronizing signal, a vertical synchronizing signal and an odd signal, a memory unit storing the output data of the data editing unit, and an output of the data editing unit A memory control circuit that controls the data writing / reading of the memory unit with a signal as an input, and outputs the image by converting the luminance and color signals output from the memory control circuit as it is or by combining the luminance and color signals and outputting a composite video signal. Characterized in that it comprises a data output unit.

The memory unit includes an external memory to expand the memory capacity by the user.

The memory control circuit includes an internal memory controller for controlling an internal memory, an external memory controller for controlling an expansion external memory, a memory switching unit for selecting the internal memory controller or an external memory controller according to a user's key input; And an image data control unit which controls the internal memory control unit or an external memory control unit on the basis of the luminance, color, and vertical synchronization signals and the odd signal of the data editing unit to store the luminance and color signals of the data editing unit in the memory unit, and the image data. And a video encoder for encoding luminance and color data output from the controller, and a serial communication interface for outputting a control signal of the microcomputer provided in the camera to the memory switching unit and the image data controller.

Hereinafter, the present invention will be described in detail with reference to the drawings.

The outline of the real imager of the present invention is configured in the same manner as shown in the perspective view of FIG.

3 is a block diagram showing an embodiment of the present invention, as shown therein, by taking a picture of the educational material placed on the textbook presentation stage 105 and performing a predetermined signal processing, n-bit luminance Y and color C. The camera 200 outputs a signal, and the output signal Y (C) of the camera 200 is clamped with a video signal reference pedestal signal to output 8-bit luminance (Y) and color (C) signals. And a data editing unit 210 for outputting the luminance synchronizing signal YSYNC, the color synchronizing signal CSYNC, the vertical synchronizing signal VSYNC, and the odd signal ODD, and storing the output data of the data editing unit 210. A memory control circuit 220 for controlling data write / read of the memory unit 230 as an input of a memory unit 230, an output signal of the data editing unit 210, and an output from the memory control circuit 220. Analogue output of luminance (Y) and color (C) signals is output as it is or the luminance (Y) and color (C) By the combination constitutes a data output section 240 for outputting a composite video signal.

The data editing unit 210 includes an analog-to-digital converter 211 for converting an output signal Y (C) of the camera 200 into a digital signal Y '(C'), and the analog-to-digital converter 211. Control the clamping operation and convert the output signal of the analog-to-digital converter 211 into 8-bit luminance Y and color / CR / CB signals, and simultaneously the luminance synchronization signal YSYNC and the color synchronization signal CSYNC. ), And a video decoder 212 for outputting the vertical sync signal VSYNC and the odd signal ODM.

The memory unit 230 includes an internal memory 231 for storing a fixed number of image data;

It consists of an external memory 232 which stores a plurality of image data which is selectively expanded.

The external memory 232 is configured to be removable.

The data output unit 240 includes a digital / analog converter 241 for converting an output signal Y ″ (C ″) of the memory control circuit 220 into an analog signal Y (C), and the digital / analog converter. The image mixer 242 outputs the output signal Y (C) of the converter 241 as it is or outputs a composite video signal by combining the output signals Y (C).

As shown in the block diagram of FIG. 4, the memory control circuit 312 includes a serial communication interface 224 for performing a serial communication with the camera 200 and receiving a mode selection signal;

An internal memory controller 221 for controlling writing / reading of an address and data to an internal memory bank, an external memory controller 223 for controlling writing / reading of an address and data to an external memory bank, and the serial communication interface A memory switching unit 222 for selecting whether to expand the memory by selecting the internal and external memory controllers 221 and 223 according to the chip selection signal CS received by the unit 224, and the serial communication interface unit ( The internal and external memory controllers 221 and 223 are controlled in accordance with the mode selection signal received by 224 to transfer the luminance Y and the color CR of the data editing unit 210 to the memory unit 230. A video encoder 226 that writes / reads and encodes an output signal of the image data controller 225 and outputs luminance (Y) and color (C) signals to the data output unit 240. ).

The camera 200 includes a lens 201 for condensing the light reflected from the material on the data presenting table 104, and a CCD (202) for converting the optical signal of the lens 201 into an electrical signal. A sampling / amplifying unit (CDS & AGC) 203 for sampling and outputting the output signal of the CD 202 to a predetermined level, and an analog / digital converting the output signal of the sampling / amplifying unit 203 into a digital signal. The converter 204 and the output signal of the analog / digital converter 204 are digitally processed and then analog-converted to output luminance (Y) and color (C) signals, and to output vertical and horizontal synchronization signals (VD) (HD). Digital signal processing unit 205 for outputting a signal, a vertical driving unit 207 for outputting a pulse for driving the CD 202, and a lens motor / iris driver for driving a motor and an aperture of the lens 201. 209, a timing generator 208 for generating a timing signal for controlling the respective units, and a key The microcomputer 206 determines a corresponding mode according to an input and outputs a signal for controlling the respective units, the data editing unit 210, and the memory control circuit 220 based on the timing signal of the timing generator 208. Configure.

Referring to the operation and effect of the embodiment of the present invention configured as described above are as follows.

First, the presenter turns on the power to store the educational material in the memory, and then puts the material 105 on the data presenting table 104 and inputs an imaging key.

At this time, the camera 200 captures the data 105 on the data presentation table 104, the optical signal through the lens 201 is converted into an electrical signal in the CD 202, sampling / amplifying unit (CDS / AGC) After being sampled at 203, the signal is amplified by a predetermined level, and the amplified signal is converted into a digital signal by the analog-digital converter 204 and input to the digital signal processor 205.

Accordingly, the digital signal processing unit 205 separates the output signal of the analog-to-digital converter 204 into luminance (Y) and color (C) signals through digital signal processing, and separates the separated luminance (Y) and color (C). ) Is converted into an analog signal and output to the data editing unit 210.

In the above process, the lens motor / aperture driving unit 209 controls various motors and irises attached to the lens 201 to adjust zoom and focus.

In addition, in the above process, the vertical driver 207 generates a pulse for driving the CD 202 and the timing generator 208 generates a timing pulse for each operation.

Accordingly, the microcomputer 206 controls the lens motor / aperture driver 209 and the digital signal processor 205 based on the timing signal of the timing generator 206, and also controls for screen inversion and memory expansion. The signal is output to the data editing unit 210 and the memory control circuit 220.

At this time, the data editing unit 210 receiving the luminance (Y) and color (C) output signals of the digital signal processing unit 205 converts the analog / digital converter 211 into the digital signal for input of the video decoder 212. Then, a clamp operation is performed by the clamp control signal CLP of the video decoder 212 to clamp the video signal reference pedestal signal, and the video decoder 212 has n-bit luminance Y and color C. The 8-bit luminance (Y) and color (CR / CB) signals can be edited according to the control signal (MCTL) input from the microcomputer 206 into video inversion, multiple still pictures, still picture inversion, or multiple pictures. Is output to the memory control circuit 220.

In addition, the video decoder 212 uses a luminance synchronization signal YSYNC, a color synchronization signal CSYNC, and a vertical synchronization synchronized with the luminance Y 'and the color C' of the analog / digital converter 211 in the internal PLL circuit. The signal VSYNC and the odd signal ODM are output to the memory control circuit 220.

Accordingly, the memory control circuit 220 inputs an address into the internal memory 231 or the external memory 232 constituting the memory unit 230, and is an example of image data edited by the video decoder 212. Images, a plurality of memory still memories, playback of stored screens, inverted screens of respective still memories screens, and multiple screens are stored.

Thereafter, when image data of one data is stored in the memory unit 230, the above process is repeated to store image data of another data.

That is, the memory control circuit 220 may be configured such that the image data control unit 225 matches the internal memory control unit 221 or the external device in accordance with a mode such as video inversion, storage, memory screen reproduction, etc. selected from the external control signal of the serial communication interface unit 224. The memory control unit 223 controls the video decoder 212 based on the luminance sync signal YSYNC, the color sync signal CSYNC, the vertical sync signal VSYNC, and the odd signal ODD. The edited digital data Y (CR / CB) is written to and read from the internal memory 231 or the external memory 232 constituting the memory unit 230.

The number of memory screens can be increased by increasing the number of memories by 2 ⁿ in accordance with the two-line bus structure of the internal memory 231 or a plurality of screens whose number of storage screens is determined by the user's setting or fixed memory allocation area. Access to the external memory 232 having an extended memory area, the memory switching unit 222 receives a control signal input to the serial communication interface unit 224, the internal memory control unit 221 or the external memory control unit 223 Is determined by the user, which is determined by the user.

Thereafter, when the presentation is started and a specific key is input, the memory control circuit 220 causes the image data controller 225 to sequentially access the image data stored in the memory 230, or the internal memory controller 221 or the external memory. When the controller 223 is controlled and the read data is output to the video encoder 226, the video encoder 226 encodes the 8-bit luminance (Y) and color (C) signals to the data output unit 240. Output

At this time, the data output unit 240 is a digital-to-analog converter 241 performs a digital conversion to convert the analog luminance (Y) and color (C) signal, the image mixer 242 is the luminance (Y) and color ( C) Output the composite video signal by outputting or combining the signal as it is.

Accordingly, the output signal of the data output unit 240 is output to the TV or projector to display the educational material on the screen.

When the microcomputer 206 instructs to alternately access the read memory bank and the write memory bank of the memory 231 or 232 every frame, the screen inversion function of the moving image is implemented.

Here, even when the number of banks is increased by the external memory 232 by using the read and write memory banks independently, the corresponding functions may be performed on the two memory buses.

As described in detail above, the present invention saves a large number of memory screens in a memory before training and shows them in a large amount of education within the teaching time, and enables direct search of the previously described textbooks to improve the educational effect. Can be.

In addition, the present invention can display up and down, left and right, up and down, left and right, and multiple screens without placing the chart immediately, and can display the previously stored texts on different screens. Can be displayed on one screen to improve the educational effect.

1 is a perspective view showing a general physical imager.

2 is a block diagram of a screen display device of a conventional real imager.

Figure 3 is a block diagram showing an embodiment of the present invention.

4 is a detailed block diagram of the memory control circuit in FIG.

Explanation of symbols on the main parts of the drawings

200: camera 210: data editing unit

211: analog-to-digital converter 212: video decoder

220: memory control circuit 221, 223: memory control unit

222: memory switching unit 224: serial communication interface unit

225: image data control unit 226: video encoder

230: memory unit 231: internal memory

232: external memory 240: data output unit

241 digital to analog converter 242 video mixer

Claims (1)

In the method for transmitting the image captured by the camera to a TV or a projector for display, Sequentially storing a plurality of image data captured by the camera in a memory, and inverting up, down, left and right or simultaneously inverting up, down, left and right by a user's key operation; Reading and displaying a plurality of image data stored above in any order; And displaying the memory screen stored by the user's key operation, displaying the image data in a multi-screen mode at the same time as stopping, inverting, turning left and right, or simultaneously.

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