JPS62179069A - Picture information processor - Google Patents

Abstract

PURPOSE:To reduce a processing time accompanied by an encoding, by dividing an image area that becomes the object of the encoding wen image information is encoded, into plural small areas, and performing the encoding at every bit of divided image information. CONSTITUTION:An image data 14 is inputted from an image information input device 2, or an image information file device 4, and is developed on an image memory 5 through an image data bus 6. The image data 14 on the image memory 5 is divided into the first are 15 and the second area 16, and through the image data bus 6, the first area 15 is transferred to the first encoder 7, and the second area 16 to the second encoder 8, then being encoded. Since a time required for the encoding is varied according to the complexity of the image data, or an encoding system, a compression data from the encoder in which the encoding is completed first is stored at a compression data file device 12 first. In this way, the encoding at each small area is performed simultaneously, therefore, an encoding time can be reduced compared with a case where only one encoder is used.

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to improvements in image information encoding means.

〔overview〕

The present invention provides an image information processing device that encodes image information stored in one storage stage, so that the processing time associated with encoding can be shortened by encoding each divided image information. This is what I did.

[Conventional technology]

In the conventional apparatus, image regions to be encoded are sequentially encoded using a single encoder.

[Problem that the invention seeks to solve]

In such a conventional device, since encoding is performed using - encoders, there is a drawback that there is a limit to the encoding speed.

The present invention aims to eliminate such drawbacks, and aims to provide an image information processing device that can perform encoding at a higher speed than the conventional example.

[Means for solving problems]

The present invention provides an image information processing device comprising a storage means for storing image information and an encoding means for converting this image information into new image information, wherein the storage means is divided into a plurality of divided memory areas. and the plurality of encoding means are provided corresponding to each memory area, and further,
The present invention is characterized by comprising a control means for outputting a starting command to the plurality of encoding means all at once.

[Effect]

Image information to be encoded is divided into a plurality of small areas of the storage means and stored. One encoder is assigned to each of these small areas, and each of the divided image information is encoded simultaneously by these encoders.

〔Example〕

DESCRIPTION OF THE PREFERRED EMBODIMENTS A device according to an embodiment of the present invention will be explained below based on the drawings.

FIG. 1 is a block configuration diagram showing the configuration of an embodiment apparatus when two encoders are used. FIG. 2 shows the flow of encoding data, and FIG. 3 shows the encoding algorithm.

First, the configuration of this embodiment device will be explained based on FIG. The image information encoding/decoding device 1 includes an image information input device 2 such as a scanner, an image information output device 3 such as a printer, an image information file device 4,
Image memory 5 , image data bus 6 , first encoder 7 , second encoder 8 , first decoder 9 , second decoder 10 , code data bus 11 , and compressed data file device 12 and a control section 13.

Next, the operation of this embodiment device will be explained based on FIGS. 2 and 3. Image data 14 is input from the image information input device 2 or the image information file device 4 and is expanded onto the image memory 5 via the image data bus 6. Image data 1 on image memory 5
4 is divided into a first area 15 and a second area 16, and the first area 15 is transferred to the first encoder 7 and the second area 16 to the second encoder 8 via the image data bus 6. encoded in The encoded compressed data is stored in the compressed data file device 12 via the code data bus 11.

Since the encoding time varies depending on the complexity of the image data and the encoding method, compressed data is stored separately in the compressed data file device 12 from the encoder that completed encoding first.

4 and 5 show the time required to encode the image data 14 on the image memory 5 and store it in the compressed data file device 12 (hereinafter referred to as processing time). FIG. 4 shows the case where two encoders are used, and FIG. 5 shows the case where one encoder is used.

The transfer time from the image memory 5 of the first and second areas to the first and second encoders 7 and 8, the encoding time, and the storage time to the compressed data file device 12 are j+
,jl',j! , j2', "t:l, j:1', the processing time T1 when two encoders are used and the processing time T2 when one encoder is used are T, = t, +t, ' +t, '+t,'Tt,=
t, ten t2+ t3+ t, / + t2' +
It becomes tyu'. Here, assuming that the amount of image data in the first and second regions is equal and the complexity of the images is equal, jl ''j1', Lz '4 L2',
Since tz #1, / can be set, 'r, = t, + (t, + t2 + t,) Tz #2 (t+ + tz + tz), and the data transfer time is much smaller than the encoding time and storage time. Therefore, 1. <<12.1, <<1. Then, 2・T+ = Tz, and the processing time when two encoders are used is about 172 compared to the processing time when one encoder is used, which reduces the processing time. . This effect becomes more noticeable as more encoders are used.

[Effects of the Invention] As explained above, in the present invention, when encoding image information, an image area to be encoded is divided into a plurality of small areas, and one for each of the small areas. Since a plurality of encoders are allocated and each small area is encoded simultaneously, the encoding time can be reduced compared to the case where only one encoder is used.

[Brief explanation of drawings]

FIG. 1 is a block configuration diagram showing the configuration of an apparatus according to an embodiment of the present invention. FIG. 2 is a schematic diagram showing the image data processing path of the apparatus according to the embodiment of the present invention. FIG. 3 is a flowchart showing the operation algorithm of the apparatus according to the embodiment of the present invention. FIG. 4 and FIG. 5 are explanatory diagrams showing processing times when using the apparatus according to the present invention and the conventional apparatus, respectively. 1... Image information encoding/decoding device, 2... Image information input device, 3... Image information output device,
4... Image information file device, 5... Image memory, 6... Image data bus, 7.8... Encoder, 9.10... Decoder, 11... Code data bus, 12... Compressed data file device, 13...
Control unit, 14... Image data, 15.16...
Image data area. Patent Applicant: NEC Corporation 2. Agent: Patent Attorney Nao Ide. Composition of Patient Case Data Sheet with 1 Diagram 2 Circle Image 2 Symbols 2 Symbols Pressure Box Data Memory
Huil large case Q
Atsushi Gokuma 4 mouths

Claims (1)

[Claims] (1) In an image information processing device comprising a storage means for storing image information and an encoding means for converting this image information into new image information, the storage means stores a plurality of divided memory areas. The encoding means is characterized in that a plurality of the encoding means are provided corresponding to each memory area, and further comprising a control means for outputting a start command to the plurality of encoding means all at once. image information processing device.