KR100263318B1 - Video presenter - Google Patents

Abstract

PURPOSE: A real image processing device is provided to display a dividing line to draw a line of demarcation a picture to divide on a screen. CONSTITUTION: The real image processing device includes an image pickup portion(21), a memory portion(22), a video signal generating portion(23) and a video operating unit. The image pickup portion converts a real image of an object being incident to a video camera into a digital signal to output. The memory portion stores the digital signal. The video signal generating portion generates a video displaying signal from a data inputted via the memory portion to output to a display device. The video operating unit is connected between the memory portion and the video displaying signal generating portion and operates the video displaying signal so as to display one or more dividing lines which are each other at right angle on the screen of the display device, and also includes a data adjusting portion(30) and a dividing line display designating portion(40). The data adjusting portion transmits a data inputted sequentially from the memory in response to a pixel to divide the screen into a large number of areas to output, but cuts that a data is outputted to the video signal generating portion according to a controlling signal and replaces with a designating signal corresponding to the dividing line to output. The dividing line display designating portion reads an address order designating a data output of the memory portion and simultaneously outputs the controlling signal to the data adjusting portion so that a data value of an address corresponding to a coordinate displaying the dividing line on the screen is replaced with the designating signal and then is outputted.

Description

Physical presenter {Video presenter}

The present invention relates to a physical imager having a video camera, and more particularly, to a physical imager capable of displaying a division line for dividing a screen on a screen when an image signal of a subject is displayed on a screen of a display device. will be.

A physical imager is a device that functions similarly to a known illuminator. A video camera is provided on a document glass on which a subject such as a document paper is placed to display an image of a subject incident on the video camera on an image display device such as a monitor or a projector. It is a device to display. A video camera constituting such an actual imager employs a zoom lens, and enlarges or reduces a certain sized subject (eg, document paper) within a set magnification range and outputs it to an image display apparatus.

The operation thereof will be described with reference to FIG. 1, which shows a configuration of a general physical imager as a block diagram.

The imaging unit 11 converts a physical image of a subject incident to the provided video camera into a digital signal and outputs the digital signal. The digital signal output from the image capturing unit 11 converts the image information input in accordance with the image display standard from the digital signal processor (DSP), which is the image signal generating unit 13, via the memory unit 12 into a color signal and a luminance signal. After being converted and output, it is output to a monitor which is a display device via a Y / C mixer in which color signals and luminance signals are mixed.

The physical imager configured as described above is particularly used for education. In the conventional physical imager, only the image of the subject displayed on the screen of the monitor is displayed on the screen of the subject or the image of the subject enlarged or reduced at a predetermined magnification. It was. Therefore, when trying to point out a specific part of the subject image displayed on the screen to the counterpart, it is not easy to express it quantitatively. In particular, even when a symmetrical structure or the center of the subject must be displayed at the center of the screen, the viewer has to inconvenience by adjusting and estimating the center of the subject through the screen, and the center of the subject is centered on the screen. The working error to match is large.

The present invention has been made to solve the above problems, and an object of the present invention is to provide a physical image display device capable of displaying a dividing line for dividing and dividing a screen on a screen.

1 is a block diagram showing the configuration of a general physical imager,

Figure 2 is a block diagram showing a physical imager according to the present invention,

3 is a view showing a part of the block of the real-time imager of FIG. 2 in more detail,

4 is a view showing a center crossing line displayed on the screen by the operation of the physical imager of the present invention.

<Description of reference numerals for the main parts of the drawings>

11, 21: imaging section 12, 22: memory section

13, 23: video signal generation unit 27: hang address counter

28: open the counter 30: data adjustment unit

31: Buffer 32: Designated Signal Part

33: resistance element 40: dividing line display designation unit

41: column address decoder 42: row address decoder

43: OR gate 44: switch

In order to achieve the above object, the real-time imaging device according to the present invention generates a memory unit and an image display signal for storing the digital signal from an imaging unit which converts and outputs a real image of a subject incident to a video camera into a digital signal. The image manipulation means is provided between the image signal generators output to the display device.

The image manipulation means manipulates a signal input to the image signal generation unit to display one or more division lines orthogonal to each other on a screen of the display device, so that the image display signal can display the division lines. Include information.

Preferably, the image manipulation means transmits and outputs data sequentially inputted from the memory unit corresponding to each coordinate of the screen, but blocks the output of the data to the image signal generation unit according to a control signal, And a data adjusting unit for alternately outputting the corresponding designated signal. And a dividing line display designation unit which outputs the control signal to the data adjusting unit so that the data adjusting unit outputs the designated signal at an address corresponding to the dividing line display coordinate while reading an address order specifying data output of the memory unit. Include.

Hereinafter, with reference to the accompanying drawings will be described in more detail the physical imager according to an embodiment of the present invention.

2 is a block diagram showing a realizer according to the present invention.

Referring to this, the imaging unit 21 photoelectrically converts an image of a subject incident through a lens (not shown) of a video camera into an electrical image signal in a CCD (not shown), and an electrical image output from the CCD in a digital camera processor. The signal is converted into a digital signal and output.

The memory unit 22 stores a digital signal output from the imaging unit 21 at a designated address while being controlled by a control unit (not shown) that controls the entire system to implement a moving image, a still image, and the like. Is read out and output.

The image signal generator 23 modulates the input data into an image signal so that an image of the subject is displayed on a screen of an image display apparatus such as a monitor.

In the data adjusting unit 30 provided between the memory unit 22 and the video signal generating unit 23, the signal processing is controlled by the dividing line display designating unit 40.

The data adjusting unit 30 is capable of switching and outputting a part of data continuously input from the memory unit 22 into data set therein under the control of the division line display designating unit 40.

The dividing line display designation unit 40 determines whether or not the dividing line is displayed to control the data adjusting unit 30.

Therefore, when the control signal corresponding to the signal which does not display the dividing line in the image data output from the imaging unit 21 is held in the data adjusting unit 30 from the dividing line display designating unit 40, the memory unit 22 is turned off. By the way, the entire image data of the subject is transmitted to the video signal generator 23 without distortion. When a control signal corresponding to the dividing line display signal is applied to the data adjusting unit 30, the image data at a position corresponding to the dividing line among the data input to the data adjusting unit 30 via the memory unit 22 is set. The data is replaced with line display data and transmitted to the video signal generator 23. At this time, the dividing line and the image of the subject are simultaneously displayed on the screen on the screen.

FIG. 3 is a view illustrating some of the blocks of the physical imager of FIG. 2 in more detail.

Referring to this, the data adjusting unit 30 has a buffer 31 and a designation signal unit 32.

The buffer 31 is connected to the memory unit 22 and functions as a switch function for blocking and transmitting the output of the input data in accordance with the presence or absence of the control signal input from the division line display designation unit 40.

The designation signal unit 32 outputs a voltage signal corresponding to the designation signal through the output terminal of the buffer 31 when the buffer 31 switches the data to which the buffer 31 is input by the control signal. To feed. The designated signal part 32 shown is connected to the voltage source Vcc and the voltage source Vcc at one side thereof, and the other side thereof includes a resistance element 33 connected to the output terminal of the buffer 31. Is switched to the mode of blocking the output of data input by the control signal, the output terminal is maintained in a high impedance state so that the voltage level signal of the resistance element 33 is output to the video signal generator 23 as a designated signal. have. This type of circuit configuration is often called a pull up resistor. According to the applied system, if the data value corresponding to the division line display mode is 1, the pull-up resistor method is applied. If it is 0, the pull-down resistor method is applied.

The dividing line display pointing unit 40 has an open address decoder 41 and a row address decoder 42, an OR gate 43, and a switch 44.

Each of the open address decoder 41 and the row address decoder 42 outputs a high level electrical signal when the address designating the data writing and output of the memory unit 22 corresponds to the division line display area. In the above example, the output signal of the row address counter 27 and the output signal of the open address counter 28 connected to the memory unit 22 are branched and inputted respectively.

The output terminals of the open address decoder 41 and the row address decoder 42 are input to the OR gate 43 and logically operated.

The switch 44 is provided between the output terminal of the OR gate 43 and the data adjusting unit 30 so as to instruct display and release of the dividing line on the screen by a user's manipulation. It is possible to connect and block what is applied to the adjustment unit 30.

Next, it looks at the operation of the real picture machine.

As shown in FIG. 4, a case in which two dividing lines 50 and 51, that is, a center crossing line, is displayed by dividing the screen on the screen in the vertical and horizontal directions respectively and intersecting with each other at the center thereof.

First, image information of a subject incident on a CCD device divided into 768 pixels in a horizontal direction and 494 pixels in a vertical direction is processed by dividing the information into pixels, that is, pixel units, and then, at each pixel coordinate (row, column). The corresponding address is stored in the memory unit 22. Therefore, in this case, when the center crossing lines 51 and 52 are to be displayed, both the row and column data values corresponding to the 384th and 247th horizontal values are changed to the data values corresponding to white in the case of monochrome display. The video signal generator 23 may be supplied.

Therefore, when the row address decoder 42 and the open address decoder 41 each have an address value corresponding to the 247th row among the output values of the row and column address counters 27 and 28 sequentially inputted, the row address decoder 42 ) Outputs the output value converted from 0 to 1, and likewise, when the address value corresponding to the 384th column is reached, the column address decoder 41 is configured to output the output value converted from 0 to 1. Therefore, the OR gate 43 outputs an output value of 1 during the period in which data corresponding to the 247th row or the 384th column is output from the memory unit 22. In the state where the OR gate 43 and the buffer 31 are connected by the user operating the switch 44 to view the center intersection lines 50 and 51 overlapped with the image of the subject on the display device, that is, the screen of the monitor. The output signal 1 of the OR gate 43 controls the buffer 31 to block the data output from the memory unit 22 to the video signal generation unit, and instead designates the designated signal unit 32 corresponding to the white signal. One signal of) is output. During this process, the portion corresponding to the dividing line display area among the data corresponding to the entire screen display area of the screen is converted into a vaccine code and inputted to the image signal generator 23. Therefore, when the video signal output from the video signal generator 23 is supplied to the monitor, the center intersection lines 50 and 51 and the image of the subject are displayed on the screen by the scanned video signal. At this time, even if the enlargement or reduction function of the image is provided, the positions of the center intersection lines 50 and 51 displayed on the screen are fixed.

In the same way, when a plurality of dividing lines appearing equally horizontally and vertically are to be displayed, a signal corresponding to white is used as a signal instead of image data written in the row and column address corresponding to each dividing line display area. Change it by the way.

As described so far, the real picture display device according to the present invention can write division line display information for dividing the screen of the screen into an image signal supplied to the display device, if necessary, so that the image position on the screen can be easily identified. .

Claims (3)

An image capturing unit converting a physical image of a subject incident to a video camera into a digital signal and outputting the digital signal, a memory unit storing the digital signal, and an image generated from the data input through the memory unit, and outputting the image display signal to a display device. In the realization machine provided with a signal generator, And an image manipulation unit connected between the memory unit and the image signal generation unit to manipulate the image display signal so as to display one or more divided lines which are orthogonal to each other on a screen of the display device. The image manipulation means Transmit and output data sequentially inputted from the memory unit corresponding to the pixels partitioned into a plurality of screens, but block output of the data to the image signal generator according to a control signal, and designate a signal corresponding to the division line display. A data adjusting unit to alternately output to And Divided line display for outputting the control signal to the data adjusting unit so that the data value of the address corresponding to the dividing line display coordinate on the screen is replaced with the designated signal while reading the address order specifying the data output of the memory unit. Physical imaging apparatus comprising a; designation unit. The method of claim 1, wherein the data adjusting unit A buffer connected to the memory unit to block and transmit an output of the input data in accordance with the presence or absence of a control signal input from the division line display designation unit; And A designation signal unit connected to an output terminal of the buffer and supplying the designation signal to the image display generating unit through an output terminal of the buffer when the buffer is switched to block input data by the control signal; Physical picture machine, characterized in that. The method of claim 1, wherein the designated signal unit A voltage source; And a resistance element connected to the voltage source at one side thereof and at the other side thereof to the output end of the buffer. When the buffer blocks the output of the data by the control signal, the output terminal is maintained in a high impedance state so that the voltage level signal of the resistance element is output to the video signal generator as the designated signal. The division line display portion is An open-dress decoder and a row address decoder for determining an address value corresponding to the division line display coordinates among the address values designating the data output of the memory unit and outputting respective electrical signals; And an OR gate connected to each output terminal of the open address decoder and the row address decoder, the output value of which corresponds to a control signal value of the data adjusting unit.

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