KR100240170B1 - Output apparatus for multiscreen at the same time - Google Patents

Abstract

The present invention relates to a multi-image simultaneous output device, comprising: compression / restore means for compressing and storing applied image data or restoring and outputting compressed image data; A frame memory for storing image data for reproducing the image; Image reproducing means for reproducing the image data output from the frame memory into a corresponding image; The vertical address and the horizontal address are output so that the image data stored in the compression / restoring means is output in the form of a thumbnail to the frame memory, and the vertical address is output such that the image data stored in the frame memory is repeatedly output to the image reproducing means. And a control means for outputting a horizontal address, and a digital still camera can simultaneously output a plurality of images stored in a memory device by its own hardware without using any software.

Description

Multiple video synchronous output device

The present invention relates to a multiple image simultaneous output device, and more particularly, to a multiple image simultaneous output device capable of simultaneously outputting a plurality of compressed and stored images in hardware in a digital camera.

A digital still camera is an imaging device that converts an optical image into an electrical signal through a CCD (Charge Coupled Device) device, and then digitalizes the signal and stores it in a memory. A plurality of images can be stored in a memory and output as needed. have.

Conventionally, among the functions of a digital still camera, a function of simultaneously outputting a plurality of images stored in a memory device in the form of a thumbnail is inherent, and such a thumbnail function has been processed in software.

However, conventionally, a separate software is required to perform the tumnail function, and a disadvantage arises in that the memory capacity is increased accordingly.

SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned disadvantages, and is capable of simultaneously outputting a plurality of images stored in a memory device by a hardware without using a separate software in a digital still camera. It is intended to provide.

The configuration of the present invention for achieving the above object,

Compression / restoring means for compressing and storing the applied image data or restoring and outputting the compressed image data;

A frame memory for storing image data for reproducing the image;

Image reproducing means for reproducing the image data output from the frame memory into a corresponding image;

The vertical address and the horizontal address are output so that the image data stored in the compression / restoring means is output in the form of a thumbnail to the frame memory, and the vertical address is output such that the image data stored in the frame memory is repeatedly output to the image reproducing means. And control means for outputting a horizontal address.

1 is a block diagram showing the overall configuration of a digital camera with a built-in multiple image simultaneous output device according to an embodiment of the present invention,

2 is a block diagram of a controller unit according to an exemplary embodiment of the present invention.

With the above configuration, the most preferred embodiment which can be easily carried out by those skilled in the art with reference to the present invention will be described in detail with reference to the accompanying drawings.

1 is a block diagram showing the overall configuration of a digital camera embedded with multiple image simultaneous output devices according to an embodiment of the present invention.

2 is a block diagram of a controller unit according to an exemplary embodiment of the present invention.

As shown in FIG. 1, a configuration of a digital still camera incorporating a multiple image simultaneous output device according to an embodiment of the present invention is connected to and applied to an image capturing unit 1 and an output terminal of the image capturing unit 1. An image output unit 3 for outputting an electric image signal, a memory unit 4 connected to an output terminal of the imaging unit 1 to store an image signal, and a corresponding address for storing or outputting the image signal It consists of the controller part 2 which generate | occur | produces.

The imaging unit 1 has a photographing lens 11, a CCD 13 for outputting an optical image formed through the photographing lens 11 as an electrical signal, and a signal output from the CCD 13. A / D (Analog / Digital) converter 15 converts and outputs the signal.

As shown in FIG. 2, the controller unit 2 includes an initial value setting unit 21 for setting horizontal and vertical counter initial values according to a mode, and an address generator 23. 23 includes a horizontal address generator 231 consisting of three counters, and a vertical address generator 233, respectively.

The image output unit 3 includes a frame memory 31 including a luminance signal memory 311 storing a luminance signal output from the A / D converter 15 and a color difference signal memory 313 storing a color difference signal. ), A D / A converter 35 for converting and outputting digital image data applied to an output terminal of the frame memory 31 into a corresponding analog signal, and a signal output from the D / A converter 35. It consists of an image output device 37 for outputting the corresponding image.

The memory unit 4 compresses and stores an image signal output from the image capturing unit 1, and compresses and restores the compressed image signal, and an output terminal of the compression / restore unit 41. And a compression memory 43 for storing the compressed video signal.

The operation of the digital still camera having the multiple image simultaneous output function according to the embodiment of the present invention by the above configuration is as follows.

In the present invention, in order to perform the tumnail function, the user selects the tumnail function by using a separate key, and accordingly, hardware is operated to output a plurality of images at the same time.

In the present invention, up to 16 stored images can be output at one time by dividing the memory area of the compressed memory 43 as follows.

The optical image formed through the photographing lens 11 while the power is applied is output as an electrical signal through the CCD 13, and the A / D converter 15 digitally outputs the applied electrical image signal. The signal is converted and output.

The A / D converter 15 according to an embodiment of the present invention also includes a function of separating and processing an applied video signal into a luminance signal and a chrominance signal, and thus outputting from the A / D converter 15. The luminance signal is output to the luminance signal memory 311, and the chrominance signal is output to the chrominance signal memory 313, respectively.

The captured image signal is output to the memory unit 4.

The image signal input to the memory unit 4 is compressed through the compression / restore unit 41 and stored in the corresponding area of the compression memory 43 for each frame.

The compression / recovery unit 41 according to an embodiment of the present invention compresses an image signal applied for each frame according to a general image compression process and stores the image signal in a corresponding region of the compression memory 43.

As described above, the image photographed by the imaging unit 1 is stored in the compression memory 43 and then reconstructed as necessary to reproduce the image through the image output unit 3.

When the user sets a thumbnail function by operating a separate key in the above state, as shown in FIG. 3, the images stored in the compression memory 43 are restored in the form of a thumbnail to be a frame memory 31. The luminance signal memory 311 and the color difference signal memory 313 are output.

When the tumnail function is set, the address generator 23 outputs an image signal stored in the compressed memory ie, an address for outputting the image data to the frame memory 31.

The driving mode of the address generator 23 is a mode for storing images stored in the compression memory 43 into the frame memory 31 and an image output apparatus 37 for storing images stored in the frame memory 31. There are modes when outputting with), and each address is outputted according to the relevant mode.

When the image data stored in the compression memory 43 is to be restored and written in the frame memory 31, the initial values of the horizontal address and the vertical address vary depending on the order of the restored image. The initial values are shown in Table 1 below. Same as

TABLE 1

In order to store the image data restored from the compression / recovery unit 41 in the frame memory 31, the initial value setting unit 21 of the controller unit 2 is initialized as shown in Table 1 above in the order of restoration. An address is set, and the address generator 23 generates a corresponding horizontal address and a vertical address according to the set initial address.

Therefore, the image reconstructed through the compression / recovery unit 41 is stored in the corresponding area of the frame memory 31 corresponding to the horizontal address and the vertical address.

When restoring an image in the form of a tumnail from the compression / recovery unit 41, only one data is restored for one block (8x8), which is the basic data size at the time of compression / restore, for example, an image of 744x480. In the case of data, 93 × 60 pieces of data actually restored to the tumnail and output from the compression / recovery unit 41 are used. That is, 93 data are output horizontally and 60 data vertically.

Therefore, even if data stored in the compressed memory 43 up to 16 portions of the memory are written to the frame memory 31, the actually written horizontal address and vertical address values are 372 and 240, respectively.

However, when the image written in the frame memory 31 is outputted to the image output device 37, the image should be output at 744 × 480 resolution. Therefore, the pixel data should be read and output twice.

When the image data restored from the compression / recovery unit 41 and stored in the frame memory 31 are output to the image output device 37, the initial value setting unit 21 initializes the vertical address and the horizontal address. The value is set to '0', and the address generator 23 sequentially outputs the corresponding addresses according to the initial value set in the frame memory 31.

The image data stored in the frame memory 31 is output to the image output device 37 according to the address output from the address generator 23, and at this time, the address generator 23 is the frame memory 31. ) Repeatedly outputs the address twice, so that the image data output once is output twice.

Accordingly, the image data stored in the frame memory 31 is output twice and output to the image output device 37, and the image output device 37 reproduces the original image corresponding to the applied image data.

As described above, according to an embodiment of the present invention, a multiple image simultaneous output device having an effect of simultaneously outputting a plurality of images stored in a memory device by its own hardware without using a separate software in a digital still camera is provided. Can provide.

Claims (4)

An imaging unit which photographs a subject to generate image data; Compression / restoring means for compressing and storing the image data from the image capturing unit or restoring and outputting the compressed image data, and sampling and restoring the compressed image data in a tumnail function; A frame memory in which image data from the image pickup unit or the reconstructed image data are respectively stored in one frame area so as to be reproduced as an image; Image reproducing means for reproducing the image data output from the frame memory into a corresponding image; And control the compression / restoration means such that the plurality of image data stored in the compression / restoration means is restored in a tumnail shape, and store all the plurality of image data restored in the tumnail form in one frame area of the frame memory. And a plurality of image output devices including control means for repeatedly outputting a plurality of thumbnail-type image data stored in one frame area of the frame memory to the image reproducing means twice and displaying them in one frame when the image is reproduced. . The address generating apparatus of claim 1, wherein the control unit generates an address for generating a horizontal address and a horizontal address of the frame memory such that a plurality of image data reconstructed in the form of a tumnail is sequentially stored in one frame area of the frame memory. Wealth; And an initial value setting unit for setting an initial value of the address generator. The image processing apparatus of claim 2, wherein the initial value setting unit is configured to output the restored image data in the form of a thumbnail, to the frame memory according to the image sequence to be restored as follows so that 16 images are simultaneously output on one screen. A multiple image simultaneous output device for setting an address initial value for storing.

The multi-image simultaneous output of claim 2, wherein the address generator is configured to repeatedly output the plurality of image data in the form of the term thumbnail stored in the frame memory to the reproduction means. Output device.

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