KR100257324B1 - Image projection device - Google Patents

Abstract

PURPOSE: A video projector is provided to increase the processing speed by outputting a video window number simultaneously set with relevant video data and video coordinates at the time which a scanning is performed one time in case that video data in a plurality of window areas are processed. CONSTITUTION: An input buffer(1) temporarily stores a CPU address applied, and outputs the address. A window memory(3) stores widow ID number data. A video memory(4) stores video data. An address generator(2) outputs an address for accessing the window memory(3) and the video memory(4). A MUX unit(5) selects and outputs an address among data outputted from the window memory(3) and a CPU address applied. A projection memory(6) is connected to an output terminal of the MUX unit(5), and stores projection data. An addition/latch unit(7) adds data outputted from the projection memory(6) and data outputted from the video memory(4). An output buffer unit(8) temporarily stores data connected to output terminals of the addition/latch unit(7), the video memory(4) and the window memory(3).

Description

Image projection device

FIG. 1 is a block diagram of an image projection apparatus according to an embodiment of the present invention,

FIG. 2 is a state diagram showing an image projection processing window region according to an embodiment of the present invention.

The present invention relates to an image projection apparatus, and more particularly, to a system and method for processing image data of a plurality of window regions in an image system requiring real-time image data processing, To an image projection apparatus for outputting and processing an image window number set simultaneously with image coordinates.

In recent years, many types of ICs (Integrated Circuits) have been developed for real-time processing of image data. However, all of these ICs are required to provide image data to a hardware module, Since it is possible to process in real time, if you want to process several windows, choose one of the following two methods.

The first method uses a plurality of dedicated devices for processing each different window.

The second method is to set a different window each time processing is performed using a small number of dedicated devices, and processes the image frame by frame.

However, the first method is disadvantageous in that a large number of ICs must be mounted, thereby increasing the ghost.

In the second method, the image data must be provided over a plurality of processing modules using a limited processing module, which results in a long processing time.

SUMMARY OF THE INVENTION It is an object of the present invention to overcome the above-described disadvantages of the related art, and it is an object of the present invention to provide an image processing apparatus, And outputting an image window number set at the same time as the coordinates, thereby improving the processing speed.

According to an aspect of the present invention, there is provided an image processing apparatus including address generation means for outputting a window ID number corresponding to a plurality of window regions and an address for accessing corresponding image data in accordance with an applied CPU address and a control signal; A window memory for outputting or storing a corresponding window ID number stored in an address output from the address generating means according to an applied control signal; An image memory for outputting or storing corresponding image data stored in an address output from the address generating means in accordance with an applied control signal; Selecting means for selecting one of the data outputted from the address generating means and the applied CPU address and outputting it as a projection address; A projection memory for outputting or storing corresponding projection data stored in an emission address output from the selection means; And adding and latching means for latching, adding, and outputting projection data output from the projection memory and image data output from the image memory in accordance with an applied control signal.

The present invention will be described in detail with reference to the accompanying drawings, wherein like reference numerals refer to the like elements throughout.

FIG. 1 is a block diagram of an image projection apparatus according to an embodiment of the present invention, and FIG. 2 is a state diagram illustrating an image processing region according to an embodiment of the present invention.

1, the configuration of an image projection apparatus according to an embodiment of the present invention includes an input buffer 1 for temporarily storing and outputting an applied CPU address, a window memory An address generator 2 for outputting an address for accessing the window memory 3 and the image memory 4 in accordance with an applied CPU address and a control signal, (5) for selecting one of data output from the window memory (3) and an applied CPIU address and outputting the selected data, a projection memory (5) connected to an output end of the mux part (5) An adding / latching unit 7 for adding the data output from the projection memory 6 and the data output from the image memory 4 and outputting the resultant data to the adding / latching unit 7 And an output buffer unit 8 for temporarily storing and outputting data to be connected to an output terminal of the window memory 3 and outputting the data.

The mux unit 5 includes a first mux 51 for selecting one of the data output from the window memory 3 and the applied CPU address to output to the upper address of the projection memory 6, And a second multiplexer 53 for selecting one of the address output from the first memory 53 and the applied CPU address and outputting the selected address to the lower address of the projection memory 6. [

The output buffer unit 8 includes a first output buffer 81 connected to the output terminal of the addition / latch unit 7, a second output buffer 83 connected to the output terminal of the image memory 4, And a third output buffer 85 connected to the output terminal of the memory 4.

The third output buffer 85 serves as a buffer for matching the timing of data output from the window memory 3 with timing of data output from the image memory 4. [

The operation of the image projection apparatus according to the embodiment of the present invention with the above configuration is as follows.

As shown in FIG. 2, a central processing unit (not shown) triggers an image projection operation in order to process images of a plurality of window regions within a specific screen.

According to the trigger operation of the image projection, the central processing unit outputs a corresponding address to a window region of the screen to be processed, and the address output from the central processing unit is transferred to the window memory 3 And is applied to the image memory 4.

An address output from the central processing unit is input to the address generator 2. The address generator 2 sequentially outputs addresses for accessing the window memory 3 in accordance with a central processing unit address and a control signal applied thereto .

The address output from the address generator 2 is input to the window memory 3, the image memory 4 and the second multiplexer 63.

The window memory 3 outputs the window ID number stored in the corresponding address outputted from the address generator 2 according to the applied read signal C and the video memory 4 also outputs the window ID number to the corresponding address And outputs the stored image data.

The window ID number output from the window memory 3 is input to the first multiplexer 51. The first multiplexer 51 multiplexes the window ID number applied according to the applied enable signal F, And outputs the selected signal.

In the case of projecting the image data of the window area, the first mux 51 selects a window ID number among the two applied signals and outputs the window ID number to the upper address of the projection memory 6.

The second mux 53 selects and outputs an arbitrary signal among the addresses applied from the address generator 2 and the central processing unit. When the image data of the window area is to be projected as described above, And outputs the window ID number output from the window memory 3 to the lower address of the projection memory 6. [

When the read signal H is applied, the projection memory 6 stores the projection data stored in the upper address outputted from the first multiplexer 51 and the projection data stored in the lower address output from the second multiplexer 53 To the addition and latch unit (7).

The addition and latch unit 7 latches the data output from the projection memory 6 and the video data output from the video memory 4 in accordance with the hatch signal J output from the central processing unit, And then adds the data and the image data and outputs the added data in accordance with the applied output signal K to the first output buffer 81.

The first output buffer 81 outputs the data output from the addition and latch unit 7 to the central processing unit in accordance with the output signal L applied from the central processing unit.

By projecting the image data of the a window region shown in Fig. 2 attached by the above operation and then projecting the image data of the b window region sequentially in the same manner as above, It is possible to perform image processing on the image.

The addition and latch unit 7 stores the data in which the projection data and the image data are added in accordance with the applied control signal, to the corresponding address of the projection memory 6 again.

As described above, according to the embodiment of the present invention, when processing image data of a plurality of window regions in an image system requiring real-time image data processing, it is possible to simultaneously set image data and image coordinates in one scan operation By outputting the image window number, it is possible to provide an image projection apparatus capable of rapidly processing an image of a plurality of window regions and saving costs by not using a separate dedicated element.

Claims (5)

Address generation means for outputting a window ID number corresponding to a plurality of window regions and an address for accessing the corresponding video data in accordance with an applied CPU address and a control signal; A window memory for outputting or storing a corresponding window ID number stored in an address output from the address generating means according to an applied control signal; An image memory for outputting or storing corresponding image data stored in an address output from the address generating means in accordance with an applied control signal; Selecting means for selecting one of data output from the window memory and an applied CPU address to output as a projection address; A projection memory for outputting or storing the projection data stored in the projection address output from the selection means; And adding and latching means for latching, adding and outputting projection data output from the projection memory and image data output from the image memory in accordance with an applied control signal. The image projection apparatus according to claim 1, further comprising output buffer means for temporarily storing and outputting data output from the addition and latch means. 2. The image processing apparatus according to claim 1, wherein the selection means comprises: first selection means for selecting one of data output from the window memory and an applied CPU address to output to a higher address of the projection memory; And a second selecting means for selecting one of an address output from the address generating means and an applied CPU address and outputting the selected address to a lower address of the projection memory. The image projection apparatus according to claim 1, further comprising: an input buffer for temporarily storing an applied CPU address and outputting the address to access the window memory and the image memory. 2. The image projection apparatus according to claim 1, wherein the adding and latching means stores the data added in accordance with the applied control signal in the corresponding address of the projection memory.