JPS61100074A - Method of accumulating picture information - Google Patents

Abstract

PURPOSE:To facilitate the compression conversion of picture information and to prevent an increase of time for communication by accumulating picture information in a memory in the form of run length value common to the MH process and MR process. CONSTITUTION:Picture information of an original obtained by scanning of a scanner 1 is inputted to an encoder 2 and the run length of white and black is counted. The value of run length thus obtained is accumulated in a memory for accumulation 4 by control of a central processing unit 3. Picture information in the form of run length value accumulated in the memory 4 is transferred to the encoder 2, and converted to a MH code and MR code suitable for the code form of the communicator, and then transmitted through a MODEM5. Thus, by accumulating the picture information as a run length value common to the MH process and MR process, an operation of conversion for reconversion becomes unnecessary.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to image information storage in a facsimile machine, etc., which stores image information in a memory device, converts it into a code corresponding to the code format of the receiving side, and transmits the converted image information. It is about the method.

[Conventional technology]

2. Description of the Related Art Conventionally, there is a facsimile machine that temporarily stores image information in a memory device and then transmits it to a receiving side. However, since this device stores image information in the memory device as compressed data encoded by the MH method or the MR method, there is a problem that communication cannot be performed if the encoding format of the communication device is different.

Therefore, a facsimile apparatus has been proposed in which the image information stored in a memory device is first converted into binary image information, and then further converted into a code adapted to the code format of the communication device and then transmitted.

[Problem that the invention seeks to solve]

However, when image information is converted in two stages as described above, there is a problem in that the conversion time becomes long because encoding and decoding are usually performed using the same circuit. Another problem is that the control for switching between the encoding operation and the decoding operation becomes complicated.

[Means and actions for solving the problem]

The present invention uses the MH method to store image information stored in a memory device.
The run-length value is common data for vikinutai, and it facilitates compression conversion of image information no matter which code format the communication device uses, thereby preventing an increase in communication time due to compression conversion of image information. It is.

According to one embodiment of the present invention, the image information stored in the memory device is composed of n (an integer of n≧2) bits, and the lower m (m (an integer of n) bits are the run length value and The area should be used to represent control data for communication, and the remaining upper n-m bits should be used to identify whether the lower m bits represent the run-length value or the control data. stored in the memory device in the form of

According to another embodiment, the image information stored in the memory device is composed of n (an integer of n≧2) bits, and the lower m (m
<An integer of 2) bits are used as an area to represent image information as a run-length value, and the remaining upper n-m bits are used as an area to represent control data for communication, thereby storing image information in the memory device in the form of run-length values. are doing.

〔Example〕

The present invention will be explained below with reference to Examples.

FIG. 1 is a block diagram showing the main parts of a facsimile machine to which the present invention is applied. Image information of a document obtained by scanning with a scanner 1 is input to an encoder 21, where a white or black image is input. The run length length is counted. The run length value obtained by this is the central processing unit (CPU) 3.
The data are stored in the storage memory device 4 under the control of. The image information in run length value format stored in the memory device 4 is
The encoder 21 transfers the signal to an M, H code or MR code adapted to the code format of the transceiver, where it is converted and then transmitted via the modem 5.

The image information stored in the memory device 4 is shown in FIGS.
), for example, it consists of 8 bits, of which the upper 2 bits are an identification area for identifying the contents of the lower bits, and the lower 6 bits are for run length values of image information, line ends, page ends, etc. It is defined as an area representing control information. Here, when the most significant bit MSB of the identification area is 0'', the lower 6 bits of the identification area represent the run length value of the image information.On the other hand, when the most significant bit MSB is 1', the lower 6 bits of the identification area It represents control information such as line ends.

For example, when storing a run length value of 63 or less, the next most significant bit MsB-1 is set to 60'',
The remaining lower 6 bits represent run length values from "0" to "63". In this case, when representing a run length value of "63" or more (this is the next highest rank), M8
B-1 is set to 1", and the lower 6 bits are "64" to r8
Run length values up to 191'' are displayed (Figure 2 (
a)).

On the other hand, when storing various control data for communication,
The most significant bit M3B is set to 1'', the next bit MSB-1 is set to 0'', and the remaining lower six bits represent control data (FIG. 2(b)).

In addition, when storing control information such as line end and page end, the most significant bin (MsB) and the next bit (i'vIS B -1) are both set to t+1 +1, and the lower 6 bits are used to store the line end. Control information such as the following is displayed (FIG. 2(C)).

Therefore, in this way, image information is transferred to IH method and M R
If the run length value is stored as a common run length value for the MH method, the two-step conversion operation of converting to binary image information and then re-converting the code of the MH method or MH method becomes unnecessary. Only the code conversion operation using the MH method or the MH method is required, and the conversion time can be significantly shortened. Furthermore, control in this case can also be simplified. As a result, it is possible to obtain effects such as saving communication costs.

FIG. 3 shows another example of image information stored in the memory device 4. In this case, the image information stored in the memory device 4 is composed of 16 bits, the upper 3 bits are an area representing communication G data such as line end and page end, and the remaining 13 lower bits are the run length of the image information. It is defined as an area that represents a value.

The embodiment shown in FIG. 2 is suitable for n=3, and the embodiment shown in FIG. 3 is suitable for n=16.32, etc.

〔Effect of the invention〕

As is clear from the above description, according to the present invention, image information is stored in the memory device in the run-length value format common to the MH method and the MR method, regardless of the code format of the transceiver. Image information can be transmitted within a short time. Further, there is an effect that control in this case becomes easier.

[Brief explanation of drawings]

FIG. 1 is a block diagram of the main parts of an embodiment of a facsimile device to which the present invention is applied, FIG. 2 is a data format diagram showing the structure of image information stored in a memory device, and FIG. 3 is a memory process diagram. FIG. 4 is a data format diagram showing another structure of image information stored in the image information. DESCRIPTION OF SYMBOLS 1...Scanner, 2...Encoder, 3...Central processing unit, 4...Storage memory, 5...Modem.

Claims (3)

[Claims] (1) In an image information processing device that stores image information in a memory device and then converts it into a code compatible with the code format of the receiving side and transmits the image information, the image information stored in the memory device is stored as a run-length value. An image information storage method characterized by: (2) The image information stored in the memory device is composed of n (an integer where n≧2) bits, and the lower m (an integer where m<n) bits are an area representing the run length value of the image information and control data for communication. The image information according to claim (1), wherein the remaining upper nm bits are used as an area for identifying whether the lower m bits represent the run length value or the control data. Accumulation method. (3) The image information to be stored in the memory device is composed of n (an integer where n≧2) bits, the lower m (an integer where m<2) bits are used as an area to represent the image information as a run-length value, and the remaining upper n 2. The image information storage method according to claim 1, wherein -m bits are an area representing control data for communication.