JPS62232275A - Picture recording and reproducing device - Google Patents

Abstract

PURPOSE:To shorten the changeover time of a display screen for retrieving by separating MH code data and MR code data and storing in a large capacity storage medium and decoding a schematic picture only by the MH code at the time of a retrieval. CONSTITUTION:When reading the code data stored on the large capacity storage medium 11, only the MH code is decoded. An MH decoding line 12 is converted so as to make one line plural lines, and thereafter extended on a picture memory 8. The schematic picture is displayed on a CRT 15 only by the MH decoded data and the picture is retrieved by the CRT display until the desired picture successively appears. When the required picture appears on the CRT, the MR code data is read from the large capacity storage medium, MR decoded, extended on the picture memory as complete picture data and displayed on the CRT. Thereby, an access time, the transfer time of the code data and a decoding processing time can be shortened.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a method for recording and creating image data, and more particularly to an image data recording and reproducing apparatus that reduces the time required to create image data.

Conventional technology Image data is recorded on a large-capacity storage medium such as an optical disk,
An image data recording and reproducing apparatus that reproduces images as needed has already been proposed, and one conventional example of such an image data recording and reproducing apparatus is shown in FIG.

This device has an image memory l that stores one screen worth of images (or one page worth of images), and input image data that undergoes Modify-Hoffman encoding (hereinafter referred to as MH encoding) and Modify-Read encoding. (hereinafter referred to as M-encoding), a large-capacity storage medium 3 that stores encoded data in multiple screens, and an MH/MIL decoding circuit that decodes encoded data. 4, a large capacity storage medium 3 such as an optical disk in which encoded data is stored or read;
A scanner 5 that inputs image data into the image memory 1, a display (hereinafter referred to as 01'tT) 6 that displays the data output from the image memory 1 as an image, and outputs the data output from the image memory 1 as a hard copy. and a printer 7. In such an image data recording and reproducing apparatus, recording and reproducing of image data is performed according to the procedure shown in FIGS. 6 and 7. That is, the image data on the image memory 1 is encoded line by line by the MR encoding circuit 2. In the example shown here, the parameter is 4, and MH encoding is performed every fourth line. The rest is subjected to MFL encoding to become MH code data and M-code data, and these code data are continuously stored in the mass storage medium 3.

The code data of any screen on the mass storage medium 3 is MH
/MR decoding circuit 4 sequentially decodes each line,
The image is developed on the image memory 1. And image memo I) l
The image data developed above is displayed on the C-T6,
Alternatively, it may be printed out as a hard copy using a printer.

Problems to be Solved by the Invention However, in the conventional image data recording and reproducing apparatus as described above, the access time to a large capacity storage medium, the time to transfer encoded data to a decoding circuit, and even Ml- Although the time required to decode coded data in the 17MR decoding circuit depends on the amount of coded data, when searching for any screen while looking at the 011, T6 display screen, it takes only one screen. It takes time to display the next screen (CR1) for searching, and the operator and user have to wait a long time before the screen changes. Ta.

The present invention has been made by focusing on these conventional problems, and its purpose is to perform an image search on a CRT display screen, and when switching from one screen display state to the next, the following An object of the present invention is to provide an image data recording and reproducing device capable of displaying a screen in an extremely short period of time.

Means for Solving the Problems In order to achieve the above-mentioned object, the present invention provides separate and separate MH encoding means and M-encoding means for the image at the time of image data recording, while MH decoding means and MR decoding means are also provided separately, and means for converting one decoded line into a plurality of lines based on the output of the HM decoding means and developing them on the image memory are provided. The gist is that the MH code data and the MR code data are separated and stored separately on a large capacity storage medium, and only the MH code data is decoded when searching for an image using CR1 display.

Effect: With this configuration, when code data stored on a mass storage medium is read out, first only MH code data is decoded. This MH decoded line is converted so that 1.1 lines become a plurality of lines, and then developed on the image memory. In line conversion of multiple lines, when the encoding parameter of this image recording and reproducing device is K'', conversion is performed to double the lines.Then, only the MH decoded data is used to convert A rough image is displayed on the CRIll, and an image search is performed using the CR1 display until the desired image appears one after another.When the desired image appears on the CRIll, the MR code data is then read out from the mass storage medium. , this is MR decoded and developed as complete image data on the image memory, and is displayed in CR1.By such operations, one screen of encoded data from a large capacity storage medium when searching for an image can be substantially reduced. to l/K (K:
parameter) line, and the access time to the mass storage device, code data transfer time, and decoding processing time are all shortened.

Embodiment FIG. 1 is a block diagram showing a schematic configuration of an image storage and reproducing apparatus according to an embodiment of the present invention. In this figure, 8 is an image memory that develops the image in one screen, 9 is an MH encoding circuit that encodes the image on the image memory 8 line by line, and 10 is the image memory 8 (■( 11 is an M-encoding circuit that performs MR encoding on lines other than each line; 11 is a large-capacity storage medium (for example, a magnetic disk, an optical disk, etc.) that independently stores one screen of MH and M-encoded data for multiple screens; 12 13 is an MH decoding circuit that decodes MH code data on the mass storage medium 11 and develops one line of MH code data into decoded data on the image memory 8; 14 is a scanner that inputs an image onto the image memory 8; 15 is a CRT that displays the image on the image memory 8; 16 is on the image memory 8; The large capacity storage medium 11 is divided into an MH code data storage area and an MR code data storage area.

In the image recording and reproducing apparatus having such a configuration, recording and reproducing of images is performed according to the following procedure.

First, an image read by the scanner 14 is developed on the image memory 8. For convenience of explanation, the parameter is set to 4. When performing encoding operation, as shown in Fig. 2,
1.5.9 of the image on the image memory 8, - (K -n
+ l: n=011.2.3...) line is M
Encoded by the H encoding circuit and stored in the mass storage medium 11
is stored as M11 code data in the MH code data storage area. Lines other than lines to be encoded (2
, 3, 4, 6, 7, 8, 10...) are sequentially M-encoded and stored in the PJR code data storage area of the mass storage medium 11 separately from the MH code data. . MH code data and MR code data of multiple screens are stored on the mass storage medium 11, and MH code data and MR code data of a plurality of screens are stored.
MR code data can be output independently.

In order to read the code data stored on the mass storage medium 11 in this way and reproduce the image on the C-T 15,
Of the MH1MR code data of the screen on the large-capacity storage medium 11, only the MH code data is decoded by the MH decoding circuit, and four lines corresponding to the parameter values are sequentially developed on the image memory 8. The image developed on the image memory 8 is always displayed on the 0RT 15, and a CRT display search is performed. An image is displayed on the CRT 15 with a resolution of every 4 lines in the vertical direction (lower resolution than the actual image), but the operator can roughly decipher the content of the image; If it is legible, there will be no problem in searching.

If a search is performed using this low-resolution display and the next screen is desired to be displayed, only the MH code data is decoded as before. Therefore, the access to the mass storage medium 11, the amount of data transferred, the decoding time, etc. are determined only by the amount of MH code data, and the time required to change the display of the next screen is reduced to about 1/4. Become. As a result of the search, the MR code data is sent to the decoding circuit 13 only when a complete image is required.
The image data is decoded and expanded to the corresponding line position on the image memory 8. At this time, the MH decoded image data for every 4 lines is already on the image memory, so refer to it and
It is possible to decode 几code. If the image data is completely developed on the image memory 8, it can be confirmed by displaying OR, T15, and a hard copy can be obtained by the printer 16.

The embodiments of the present invention have been described above with respect to an image recording/reproducing device, but such an invention is applicable to a workstation in which an OR, a T15, and an image memory 8 are integrated, and a large-capacity storage medium device 1. It is possible to improve the effect even in a data transmission system where the two are separated from each other and the two are connected by a means with a slow transfer speed such as a communication line.

As described in detail, according to the present invention, when searching for an image, it is noted that the search is possible if the outline of the image can be read, and when the image is encoded and stored, M1-1 code is used. Data and MR code data are stored separately on a large-capacity storage medium, and when searching, the general image is decoded using only the MH code, reducing the time required to change the display screen for searching. It is possible to shorten the operator's waiting time, and also to shorten the time that hardware such as a large capacity storage medium is occupied.

[Brief explanation of drawings]

FIG. 1 is a schematic block diagram of an image recording and reproducing apparatus according to an embodiment of the present invention, FIG. 2 is a data flow diagram during encoding in the embodiment, and FIG. 3 is a data flow diagram during retrieval in the embodiment. , FIG. 4 is a data flow diagram when a complete image is required, and FIG. 5 is a schematic block diagram of a conventional image recording and reproducing device.
Figure 6 is a data flow diagram during encoding in a conventional device;
FIG. 7 is a data flow diagram during decoding in a conventional device. l, 8... Image memory, 2... MH/M encoding circuit, 3.11... Mass storage medium, 4... MH/M
Decoding circuit, 5.14...Scanner, 6.15...
・CRT (display), 7.16... printer,
9... MH encoding circuit, 10... M-encoding circuit,
11...MH decoding circuit, 12...MR decoding circuit. Name of agent: Patent attorney Satoshi Nakao and one other person Figure 1, Figure 21! i Figure 3 Figure 4 Figure 5 Figure 6 Figure M7

Claims (1)

[Claims] An image memory, a display that receives image data from the image memory and displays the image, MH encoding means and MR encoding means that encodes the image data on the image memory, and data encoded by these encoding means. a storage medium for independently storing a plurality of screens in separate areas; MH decoding means and MR decoding means for decoding encoded data from the storage medium and developing image data onto the image memory; means for storing code lines outputted from the encoding means and the MR encoding means on a storage medium independently of each other; and converting one decoded line of the MH decoding means into a plurality of lines according to parameters. 1. An image recording and reproducing apparatus comprising: means for rasterizing an image onto an image memory, and decoding only MH code data and rasterizing the data onto the image memory when searching for an image by displaying the image.