JPS5818772A - Data condensing system - Google Patents

Abstract

PURPOSE:To effectively utilize a storage area where characters are contained, by setting the storage area in accordance with the dimension of the character and containing characters in this area. CONSTITUTION:Height H and width W of a character are inputted into registers R1 and R2 and then inputted into comparators C1 and C2. Counters L1 and L2 start the counting operation and, untile the counted value of the counters L1 and L2 coincides with the value of of the register R1, the address value of an address updating circuit G1 increases together with the counted value of the counter L1. Herewith, the content in the storage area at the 1st row of a picture memory M designated by the circuit G1 is inputted into a picture register R3. Since the circuit G1 designates a storage area in the 2nd row when the circuit receives the coincidence signal from the comparator C1 and, moreover, the counter L1 is reset by the coincidence signal, the storage areas on the 2nd row are successively designated from the lowest rank as the counting operation of the counter L1 propresses. Therefore, data in this area are inputted into the register R3. In the same way, data on the 3rd row are also inputted. When the data of one character width are inputted, the data in the register R3 are sent to a memory K.

Description

[Detailed description of the invention] The present invention relates to a data compression method.

Conventionally, when storing image data in a storage device, it is possible to store the image data unconditionally according to the size and shape determined by the position of the extraction base point A of the input format information and the character height ■, as shown in FIG. With this method, the memory area for storing the image can be kept constant regardless of the size of the image, and it is easy to play back images stored in the storage device. l1ll
The present invention was developed in view of this point, and an object of the present invention is to provide a novel data compression method in which λ force information is manually stored in a nine-sized storage area according to input format information.

Preferred embodiments of the present invention will be described in detail below with reference to the following.

#I2 As shown in Figure 1, the information in the 1-image memo IJM is as follows.

The character @W is in bytes, the character ^sa is in bits, and the origin address, X 41m, is in bytes.

The y coordinate is specified in bits. Only the information within this designated area is stored in the storage device.In the storage device, a storage area of a size according to the information is allocated as shown in Figure 3, so the storage of the storage device is Space is used effectively. In this case, since the origin position information is also input at the same time, the protrusion operation becomes the amount rate. In the figure, the identification label is a name such as @橡 where information is written.

FIG. 4 is a block diagram of the qo-embodiment of the present invention, in which F is a format information memory, T#i data extraction section, and includes a flag generation circuit T1%, a flag storage circuit TIs, and a data extraction circuit T. ■ is the first circuit, is the memory section, Ml-j
Image memory, P is data reading 1iiLf! It is A5.

Next, the operation of this device will be explained. The nine data read by the reading sP are input into the image memory M.

(Fig. 2.) Based on the positional information of the origin A stored in the format memory F, the flag creation section T1 obtains superimposed data of characters with this point as the origin, and this data is stored in the flag storage section T1. , memorize it.

As is well known, superimposed data is the range where characters exist.

In other words, it indicates the character width and character height. Extraction circuit T, then Ijli image memo IJ M letter I11! W1
The character height H is set, and the pattern area to be extracted is fixed.

That is, as shown in Figures 1w & 5, the character @W with a character height of H1 is manually input to registers R, , R, and 4C, and is input to comparators C1 and C3. Karan/L1. .

L, releases the counting operation, and the number of stitches f [and the register R
The address value of the address advance circuit G increases together with the hand value of the counter L until the values of 1e R1 match. Accordingly, the contents of the storage area of the image memo IJM (the storage area in the first column in FIG. 2) specified by the address update circuit G are input to the liiigI register R. In response to the -am signal from the conoperator C1, the storage area in the second column of the address update circuit aFi@2 is specified, and the counter L is reset by this match signal, so the counter L is reset again.
The storage area of the second column is designated as the counter L sequentially counts from the lowest storage area of the column. Therefore, data in this area is input to the ligII register R. Similarly, data in the third column is also input to the image register. When the data for one character width is completed (when the number of stitches of Tsumashikau/Ll matches the character width), an end signal is output from the comparator 0, and the data in the image register R1 is transferred to the storage device K. In this way, only character data is stored in the storage device.

As is clear from the above explanation, the data compression method according to the present invention sets nine storage areas according to the size of one character, stores characters in these areas, and efficiently utilizes the storage area for storing one rounded character. There are advantages that can be achieved.

[Brief explanation of the drawing]

FIG. 1 is a diagram showing characters on a medium, and FIG. 2 is a diagram showing an example of the configuration of characters. IF near-ormat information creation section, Tl Two-flag creation circuit, T, two-flag storage device, T: Extraction oil path. V Ni County (9) Road 1M: Image memory, K: Storage device, Figure 1 Todoroki, Figure 3

Claims (1)

[Claims] The data written in each unit area on the medium is read by the reading unit g*b
, in a data compression method that inputs the data into a storage unit, compresses the data in the storage unit, and stores it in another storage unit, detects the base point of the data, the data width, and the data height in the unit area. means for detecting the detected data width;
9. A data compression method characterized in that data within a data height is stored in the other storage unit.