KR100574369B1 - Image output device of real imager and control method thereof - Google Patents

Abstract

An image output apparatus of a scrollable real imager includes a memory unit for storing an image signal obtained by processing an electrical signal picked up by an image pickup device at a corresponding address, a resolution selection switch unit for selecting a desired resolution, and an entire image area. And a scroll region selecting unit for selecting a desired image region by scrolling and a microcontroller for controlling an image output operation of the real imager. When the resolution selection switch unit is operated, the microcontroller determines the resolution selected by the user to determine data corresponding to the scroll window for scrolling the entire image area and outputs the scroll window. Then, the microcontroller determines the position of the scroll window selected by the user by using a signal input from the scroll region selection unit, and outputs only image data corresponding to the selected image region among all image data stored in the memory unit. Therefore, when the resolutions supported by the output device connected to the real picture device are different from each other, the reduction or deformation of the entire image data is not performed, thereby preventing the loss or damage of the image data and consequently deteriorating image quality. do.

Description

Image output device of real imager and control method thereof

The present invention relates to a real imager. More specifically, the present invention relates to a real imager which scrolls an entire image area and selects and outputs an output area to be output by a user.

The real imager uses an image pickup device such as a Charge Coupled Device (CCD) to convert a placed document or a real image into an electric signal, and then a television, a personal computer monitor, or a projector made of a liquid crystal. The imager outputs through.

Therefore, it is widely used as an audiovisual material, a data input device of video conference, etc. in a school or a company.

The basic structure of an actual imager includes a main body having a stage for placing an original or a real object, a light receiving unit for receiving an incident image when the image of the original or the actual image placed on the stage is incident through a lens and outputting the electrical image signal; It is composed of a support for maintaining a certain distance between the light receiving unit and the stage for adjusting the focus.

Therefore, by adjusting the position of the support, the focus adjustment is performed while adjusting between the light receiving unit and the stage, so that the optimum output image quality can be maintained.

When using the real imager connected to a liquid crystal projector or a computer monitor, if the resolution of the real imager and the resolution of the connected output device do not coincide with each other, the output data of the real imager must be modified to match the resolution of the connected output device.

That is, if the number of pixels of the connected output device is larger than the pixel number of the real imager, no big problem occurs. On the contrary, if the number of pixels of the output device is smaller than the pixel number of the real imager, for example, the resolution of the real imager is XGA. If the output device supports SVGA and the resolution of the output device supports SVGA, the real picture display should reduce the image data to SVGA that can be supported by the connected output device before outputting.

As such, when the image data is modified to match the resolution of the output device connected to the real imager, the entire image data output from the real imager must be reduced, so that a large amount of image data is lost and damaged during the reduction process. There is a problem that the image quality of the output image is degraded.

Therefore, the technical problem to be achieved by the present invention is to select and output only the portion corresponding to the supported resolution when the resolution supported by the connected external output device is lower than the resolution supported by the real imager.

The image output device of the real imager according to the present invention for solving such a problem,

A resolution selection switch unit for selecting a desired resolution;

A scroll region selector for scrolling an entire image region and selecting a desired image region;

A scroll operation stop switch for stopping a scroll operation of the entire image area, and a memory unit in which captured image data is stored;

The scroll selector outputs a scroll window by determining the data corresponding to the scroll window scrolling the image area according to the resolution selected by the resolution selection switch unit, and moves the scroll window position according to the operation of the scroll region selector to select among the entire image data stored in the memory unit. And an operation controller for outputting only image data corresponding to the selected image region.

Preferably, the scroll area selection unit may move the scroll window in the up, down, left and right directions.

Preferably, the apparatus further includes a scroll motion stop switch connected to the motion controller.

The image output control method of the real imager according to the present invention,

Reading a signal output from the resolution selection switch unit to determine a selected resolution;

Determining position and size data of the scroll window corresponding to the selected resolution;

Determining a signal input from the scroll region selection unit and determining a region of an image selected by the user by using a scroll window among all image regions;

And outputting only the image data corresponding to the determined region among the image data stored in the memory unit.

Then, with reference to the accompanying drawings, with respect to the image output device and the control method of the scrollable real imager according to an embodiment of the present invention can be easily carried out by those of ordinary skill in the art. The most preferred embodiment that can be described in detail.

1 is a block diagram of an image output apparatus of an actual imager which scrolls and outputs an entire image according to an embodiment of the present invention, and FIG. 2 is a block diagram of an actual imager which scrolls and outputs an entire image according to an embodiment of the present invention. The operation flowchart of the video output control method is shown. 3 illustrates an example of a scroll window for the entire image area according to an embodiment of the present invention.

As shown in FIG. 1, the structure of an image output apparatus of an actual imager which scrolls and outputs an entire image according to an embodiment of the present invention is as follows.

A lens 1, an imaging device 2, an automatic gain adjusting unit 4 connected to the imaging element 3, a signal converting unit 5 connected to the automatic gain adjusting unit 4, a signal converting unit 5 and The connected digital signal processor 6, the memory 7 connected to the digital signal processor 6, the encoder 8 connected to the memory 7, and the memory controller 8 connected to the memory 7. And a microprocessor (9) connected to the digital signal processor (6) and the memory controller (8), a timing signal generator (10) connected to the microprocessor (9) and the imaging device (3), and the microprocessor (9). And a resolution selection switch unit SW1 connected to the scroll region selection unit SW2 and a scroll operation stop switch SW3.

The lens 1 forms an image of a subject, and the imaging element 2 photoelectrically converts the image formed by the lens 1 and outputs the corresponding electrical signal.

The automatic gain adjustment unit 3 removes unnecessary noise components included in the electrical signal output from the imaging element 2, and automatically adjusts the gain to adjust the electrical signal to be available.

The signal converter 4 converts the electric signal of the gain-adjusted analog state output from the automatic gain adjuster 3 into a digital state and outputs the digital signal to the digital signal processor 5.

The digital signal processor 5 comprises a known digital image signal processor and processes the captured image signal converted into a digital state through a known operation to store the image data in a corresponding address of the memory unit 6.

When the image data stored in the memory unit 6 is input, the encoder unit 7 converts the image data into a form that can be supported by a connected external output device (not shown) and outputs the image data to the connected external device.

The memory controller 8 controls the data input / output states of the memory unit 6 in accordance with a control signal output from the microcontroller 9.

The microcontroller 9 is connected to the digital signal processor 5, the memory controller 8, and the timing signal generator 10, and has a general structure such as a central processing unit, a ROM, or a RAM, and operates to process an image signal. , Control the operation of the imaging device 2 by controlling the timing signal output state of the timing signal generator 10, and control the image data processing operation according to the difference in resolution between the output device connected to the real imager. do.

The timing signal generator 10 changes the operation state according to the control signal output from the microcontroller 9 to control the signal output state of the imaging device 2.

The resolution selection switch unit SW1 includes a plurality of resolution selection switches in which a state of a signal output to the microcontroller 9 changes according to a user's selection operation, and the microcontroller 9 according to the type of resolution selected by the user. Control operation).

Since the scroll area selector SW2 selects a corresponding area while freely moving the position of the scroll window W set in accordance with the resolution selected by the resolution selector switch SW1 in the up, down, left and right directions, the microcontroller 9 Only the image data corresponding to the selected area among the image data stored in the memory unit 6 can be output. In general, the scroll area selection unit SW2 may be formed of a mouse, an operation key, or the like.

In addition, the scroll operation stop switch SW3 outputs a signal of the operation state to the microcontroller 9 by the user, so that the scroll operation of the scroll window W can be stopped.

The operation of the image output apparatus of the scrollable real imager according to the embodiment of the present invention having such a structure will be described in detail with reference to FIGS. 1 to 3.

First, when the lens 1 forms an image of a subject (not shown) and outputs it to the imaging device 2, the imaging device 2 captures an image formed by the lens 1, and then generates a timing signal. According to the timing signal output from the unit 10 outputs an electrical signal of an analog state corresponding to the phase formed.

Then, when the electrical signal output from the image pickup device 2 is input to the automatic gain adjustment section 3, the automatic gain adjustment section 3 removes unnecessary noise components included in the input electrical signal and returns the gain to the corresponding state. Automatic adjustment converts the electrical signal into a usable state.

The signal converter 4 converts the electric signal of the gain-adjusted analog state input from the automatic gain adjuster 3 into a digital state signal, and then inputs it to the digital signal processor 5.

Accordingly, the digital signal processing unit 5 changes its operation state according to the control signal output from the microcontroller 9, and processes the digital signal of the digital state input from the signal conversion unit 4 in a general video signal processing operation. The video signal corresponding to the image formed by the lens 1 is stored in the corresponding address of the memory unit 6.

At this time, the image data stored in the memory unit 6 is data corresponding to all the pixels picked up by the imaging element 2.

Then, the microcontroller 9 executes a control operation for converting and outputting the image data stored in the memory unit 6 processed by the image signal according to the resolution selected by the user.

Next, a control operation of the microcontroller 9 for outputting image data stored in the memory unit 6 according to the selected resolution will be described with reference to FIG. 2.

First, when the operation is started (S10), the microcontroller 9 reads the signal input from the resolution selection switch unit SW1 (S11), and determines the resolution selected by the user (S12).

Since the resolution selection switch unit SW1 has a selection switch for selecting a plurality of resolutions supported by the real imager, the user selects a resolution that can be supported by an output device such as a liquid crystal projector or a computer system connected to the real imager. .

In this way, when the resolution is selected by operating the resolution selection switch unit SW1, the microcontroller 9 uses the data already set according to the selected resolution to determine the coordinate values ((x) of the starting points of the rows and columns of the scroll window W. , y), (x ', y)) and the coordinate values ((x, y'), (x ', y')) of the endpoint.

The start and end points of the rows and columns corresponding to the size and coordinates of the scroll window (W) corresponding to each resolution are already present in a memory (not shown), such as a separate RAM, which is already embedded in the microcontroller 9 or externally mounted. Since coordinate values ((x, y), (x ', y), (x, y'), (x ', y')) are stored, the microcontroller 9 reads data corresponding to the selected resolution. do.

When the initial position of the scroll window W corresponding to the selected resolution is determined using the data already set, the microcontroller 9 determines the scroll window W determined as a display device (not shown) mounted on the real imager. (S14).

Then, while looking at the display device, the user can select a desired video area by sequentially scrolling the entire video screen using the scroll area selection unit SW2.

Therefore, the microcontroller 9 reads a signal input from the scroll region selection unit SW2 to determine whether the scroll window W is scrolled by the user and the corresponding region is selected (S15).

Since the scroll area selector SW2 is attached to the real imager and consists of a mouse or an operation key, the user can arbitrarily move the position of the scroll window W up or down or to the left or right to scroll the entire video screen to execute image output. .

When the position of the scroll window W is moved to a desired area by the scroll area selecting unit SW2 and the selection operation is executed, the microcontroller 9 controls the operation of the memory controller 8 to control the scroll area selecting unit. Only image data corresponding to the area selected by SW2 is output from the memory unit 6 to the encoder unit 7 (S16).

Then, the microcontroller 9 reads the signal output from the scroll operation stop switch SW3 to determine whether the scroll operation using the scroll window W is completed (S17).

When the scroll operation stop switch SW3 is operated to determine that the scroll operation of the entire image area is stopped using the scroll window W, the microcontroller 9 returns to the initial state (S18).

However, if it is determined that the operation state of the scroll operation stop switch SW3 is inactive, the microcontroller 9 determines that the user wants to continuously perform the scroll operation for the entire image area, and proceeds to step S15. The area selected by the scroll area selection unit SW2 is determined.

Therefore, since the user selects a desired region by scrolling the entire image region sequentially, only the image data corresponding to the selected region among the image data of the memory unit 6 is output to the encoder unit 7.

As such, when image data corresponding to the selected area is output from the memory unit 6 and input, the encoder unit 7 outputs the output image data so as to be suitable for an operating state of an output device such as a liquid crystal projector or a computer monitor. The state of the generated video data is converted and output.

Therefore, an output device such as a liquid crystal projector or a computer monitor connected to the real imager of the present invention outputs an image corresponding to a region selected by the scroll window W among the entire images.

As described above, when the resolution of the real imager is higher than the resolution supported by the connected liquid crystal projector or the computer monitor, the output image of the real imager is sequentially scrolled through the area to be output without reducing the output image of the real imager as a whole.

That is, the entire image area is divided into a plurality of image areas and sequentially output.

Therefore, the effect of this invention which operates in this way does not perform the reduction or deformation operation of the entire image data, thereby preventing the loss or damage of the image data and consequently the deterioration of image quality.

In addition, there is an effect that the user can scroll and output only the image of the desired area.

1 is a block diagram of an image output apparatus of an actual imager which scrolls and outputs an entire image according to an embodiment of the present invention.

2 is an operation flowchart of an image output control method of an actual imager which scrolls and outputs an entire image according to an embodiment of the present invention;

3 illustrates an example of a scroll window for an entire image area according to an embodiment of the present invention.

Claims (6)

An imaging unit which picks up an image formed by a lens and outputs an electric signal; A digital signal processor which receives a signal output from the image pickup unit, processes the input signal into an image signal, and outputs the image signal as corresponding image data; A memory unit for storing image data output from the digital signal processor; A resolution selection switch unit for selecting a desired resolution; A scroll region selector for scrolling an entire image region and selecting a desired image region; Data for scroll windows having different sizes and coordinate values are stored for each resolution, selecting data corresponding to the scroll window having a predetermined size and coordinate values according to the selected resolution, and outputting the scroll window. And an operation control unit for selecting a predetermined image area by moving the scroll window position according to the operation of the scroll area selection unit, and outputting image data corresponding to the selected image area among all image data stored in the memory unit. Image output device of the presenter. The method of claim 1, And a memory controller for controlling data input / output operations of the memory unit according to a control signal output from the operation controller. The method of claim 1, And the scroll area selection unit moves the scroll window in the up, down, left, and right directions. The method of claim 1, It further includes a scroll motion stop switch, And determining that the scroll operation stop switch is in an activated state, the operation controller stops the scroll operation of the entire image area using the scroll window and returns to the initial state. Reading a signal output from the resolution selection switch unit to determine a selected resolution; Data for a scroll window having different sizes and coordinate values for each resolution are stored, and selecting data corresponding to the scroll window having a predetermined size and coordinate values according to the selected resolution and outputting the scroll window; ; Determining a signal input from the scroll region selecting unit, and determining an area of an image selected by the user using a scroll window among all regions; And outputting only the image data corresponding to the determined region among the image data stored in the memory unit. The method of claim 5, Determining whether the scroll operation stop switch is activated; If it is determined that the scroll operation stop switch is operated, returning to an initial step; And if it is determined that the scroll operation stop switch is not in operation, further comprising determining the operation of the scroll region selection unit.