JPS6374169A - Picture processor - Google Patents

Abstract

PURPOSE:To shorten the compression/expansion processing time by providing plural compression/expansion processing parts and dividing a sheet of picture information into plural pieces to process each of these divided pieces of picture information through a single compression/expansion processing part. CONSTITUTION:The expansion data on a sheet of picture stored in a buffer memory 1 for storage of expansion data is divided into two pieces. One of these expansion data undergoes the compression processing through a compression/expansion processing part 2 and is stored in a buffer memory 4 for storage of compression data. While the other expansion data is stored in the memory 4 after undergoing the compression processing through a compression/expansion processing part 3. In the expansion processing mode the compression data stored in the memory 4 undergo the expansion processing through the parts 2 and 3 for each of divided compression data and are stored in the memory 1. In such a way, the compression/expansion processing time is shortened.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to an image processing device used for registering and reading image information on an optical disc or the like.

(Conventional technology) FIG. 2 shows the configuration of a conventional image processing device.

In FIG. 2, reference numeral 1 denotes a buffer memory for storing decompressed data of one image, and is connected to a compression/decompression processing section 2 for one image data.

Further, the compression/expansion processing section 2 is connected to a buffer memory 4 for storing compressed data.

Next, the operation of the above conventional example will be explained.

When registering image data, since the amount of data for one image becomes large, compression processing is generally performed to efficiently register the data in a device such as an optical disk device.

Conversely, when extracting image data, the compressed image data is expanded.

In conventional apparatuses, one compression/expansion processing section performs compression and expansion of one sheet of image data.

The image data input to the buffer memory 1 for storing decompressed data is sent to the compression/decompression processing section 2 where compression processing is performed, and the compressed data is stored in the buffer memory 4 for storing compressed data.
is stored in

Conversely, in the case of decompression processing, the image data input to the compressed data storage buffer memory 4 is sent to the compression/decompression processing section 2, subjected to decompression processing, and stored in the decompressed data storage buffer memory 1.

(Problems to be Solved by the Invention) However, in the conventional image processing device described above, compression and expansion processing of one image data is performed in one compression and expansion processing section, and therefore, compression processing of one image data The decompression processing time is limited by the processing capacity of the compression/decompression processing section.

The present invention solves these conventional problems and provides an image processing system that can increase the number of images that can be compressed or decompressed per unit time by reducing the time required to compress or decompress image data. The purpose is to provide a processing device.

(Means for Solving the Problems) In order to achieve the above object, the present invention provides a plurality of compression/expansion processing units, and performs 1 compression or expansion processing of one image data in parallel by the plurality of image processing units. By processing, the time required for image data compression or expansion processing is reduced.

(Function) Therefore, according to the present invention, by dividing the compression or expansion processing of one image data by a plurality of compression/expansion processing units and processing them in parallel, the compression or expansion processing per image data can be This has the effect of reducing the time required for

(Example) FIG. 1 shows the configuration of an embodiment of the present invention.

In FIG. 1, reference numeral 1 denotes a buffer memory for storing decompressed data of one image, and is connected to compression/decompression processing units 2 and 3. The compression/expansion processing units 2 and 3 are connected to a buffer memory 4 for storing compressed data.

Next, the operation of the above embodiment will be explained.

When the decompressed data of one image is stored in the decompressed data storage buffer memory 1, this data is divided into two parts, one of the divided decompressed data is compressed by the compression/decompression processing unit 2, and the compressed data is stored. The remaining decompressed data is compressed by the compression/decompression processing unit 3 and stored in the compressed data storage buffer memory 4.

In the case of decompression processing, the compressed data stored in the buffer memory 4 for storing compressed data is decompressed in the compression/decompression processing units 2 and 3 for each compressed data divided during the compression process, and the buffer memory 4 for storing the decompressed data is expanded. Store in 1.

As described above, according to the above embodiment, since the two compression/expansion processing sections compress or decompress one image data in parallel, the processing time for compression or decompression per image can be reduced. be able to.

Further, in the above embodiment, the case where two compression/expansion processing units are used is taken as an example, but it is also effective in the case where there are three or more.

(Effects of the Invention) As is clear from the above embodiments, the present invention divides one piece of image data by a plurality of compression/expansion processing units, and performs compression/expansion processing for each divided data in parallel. compression·
Decompression processing time can be shortened.

[Brief explanation of the drawing]

FIG. 1 is a schematic block diagram of an image processing apparatus according to an embodiment of the present invention, and FIG. 2 is a schematic block diagram of a conventional image processing apparatus. 1... Buffer memory for storing expanded data, 2.3.
...Compression/expansion processing section. 4... Buffer memory for storing compressed data.

Claims (1)

[Claims] An image processing device characterized in that a plurality of compression/expansion processing units are provided, one image information is divided into a plurality of pieces, and each of the divided image information is compressed/expanded by one compression/expansion unit.