JPS63152245A - Medium conversion system - Google Patents

Abstract

PURPOSE:To manage the storage area of a data at an optimum state by controlling the input restriction to a medium conversion module based on the input restriction value corresponding to the classification medium conversion obtained from the medium conversion classification table. CONSTITUTION:A terminal medium classification table 9 storing the classification of medium of terminal equipments 1, 2 and the medium conversion classification table 10 storing the input restriction value to the converted medium classification are prevented in the medium converter 3. The terminal medium classification table 9 is referenced at the start of communication to decide the medium classification of transmission/reception side terminal equipments 1, 2 and the medium conversion classification table 10 is referenced to decide the input restriction value to regulate the input data to the medium conversion based on the medium type of both the terminal equipments 1, 2. Thus, the data to be transferred to be transferred to the terminal equipment at the reception side is stored economically corresponding to the conversion type between different media.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a media conversion device, and in particular, to an apparatus for economically storing data to be transferred to a terminal device on the receiving side in response to types of conversion between different media. The present invention relates to a media conversion method that makes it possible to

[Conventional technology]

FIG. 5 is a block diagram showing a conventional media conversion method disclosed in, for example, Japanese Unexamined Patent Publication No. 60-4352. In the figure, 1 is a terminal device, for example a character terminal device, 2 is a terminal device using a different media than the character terminal device 1, for example a facsimile terminal, 3 is a media conversion device, and 4 is a media conversion device for converting the character terminal device 1 into a media conversion device. This is a switching network that connects to the facsimile terminal device 2 via a 5-way terminal 3. Further, 5 is a line control module, 6 is a main storage device, 7 is a media conversion module, and 8 is a central control device.The media conversion device 3 is formed by these.

Next, the operation will be explained. When converting data via the media conversion device 3, the character terminal device 1 and the facsimile terminal device 2 are connected to the line control module 5 of the media conversion device 3 via the switching network 4, and the character terminal device 1 When the media conversion device 3 receives data from the facsimile terminal device 2, the central control device 8 first sequentially stores the character data from the character terminal device 1 in the main storage device 6. Next, the central controller 8 extracts the stored character data from the main memory 6, issues a media conversion command to the media conversion module 7, and transfers the character data to the media conversion module 7 as facsimile data of the facsimile terminal device 2. Convert it to The media-converted data, which has been converted from character data to facsimile data by the media conversion module 7, is sequentially stored in the main storage device 6 by the central controller 8 and transferred to the facsimile terminal device 2. Here, input data to media conversion is regulated by constantly comparing the amount of media-converted facsimile data stored in the main storage device 6 with a single predetermined input regulation value. There is. That is, if the amount of facsimile data exceeds the input regulation value, the request to the media conversion module 7 to convert the character data stored in the main storage device 6 is stopped, and when the amount falls below the input regulation value, the request to the media conversion module 7 is stopped. Reopen this conversion request.

[Problem that the invention seeks to solve]

Since the conventional media conversion method is configured as described above, the input data to the media conversion module 4 is regulated with only one input regulation value for all media conversions, so code data such as characters etc. There has been a problem in that it is impossible to perform control corresponding to the difference in the ratio of input and output information amounts in the conversion from image data such as facsimile data to image data and from image data to code data.

This invention was made in order to solve the above-mentioned problems, and aims to provide a media conversion method that can perform input regulation corresponding to the characteristics of the input and output information amount of media conversion according to the type of media conversion. purpose.

[Means for solving problems]

The media conversion method according to the present invention includes, in a media conversion device, a terminal media type table that stores the media type of each terminal device, and a media conversion type table that stores input regulation values for the media type to be converted. At the start of communication, refer to the terminal media type table to determine the media types of the transmitter and receiver terminal devices, and refer to the media conversion type table to perform media conversion based on the media types of both terminal devices. This is to determine input regulation values for regulating input data.

[For production]

The media conversion method according to the present invention is determined by referring to a terminal media type table; (9) determining the media types of the transmitting side and receiving side terminal devices; and determining the media types of both terminal devices by referring to the media conversion type table. Data input to media conversion is restricted based on the input restriction value corresponding to the media type of both terminal devices, and control that matches the characteristics of the media conversion type is realized.

〔Example〕

An embodiment of the present invention will be described below with reference to the drawings. 1st
In the figure, 1 is a terminal device such as a character terminal device, 2 is a terminal device such as a facsimile terminal device, and 2 is a terminal device such as a facsimile terminal device.
3 is a media conversion device, 4 is a switching network, 5 JL #5
b is a line control module, 6 is a main storage device, 7 is a media conversion module, and 8 is a central control device, which are the same or equivalent parts to those with the same reference numerals in FIG. Further, 9 is a terminal media type table provided in the main storage device 6, and 10 is a media conversion type table also provided in the main storage device 6.

FIG. 2 is a format diagram showing this terminal media type table 9. In the figure, 91 is the terminal ID and 92 is the media type. The terminal ID 91 is information for identifying the identity of the terminal device, and includes the subscriber terminal number and D
TE address corresponds.

The media type 92 indicates the type of media used by the terminal device indicated by the terminal ID 91. Based on this terminal media type table 9, the media types of both terminal devices 1 and 2 that perform communication can be determined.

FIG. 3 is a format diagram showing the media conversion type table 10, in which 101 is the media type before conversion;
2 is a post-conversion media type, and 103 is an input regulation value.

The pre-conversion media type 101 indicates the media type of input data to the media conversion module 7, and the post-conversion media type 102 indicates the media type of output data from the media conversion module 7. The input regulation value 103 is
Media type before conversion 101 and media type after conversion 102
In contrast, values for controlling input data input to the media conversion module 7 are shown.

Next, the operation will be explained. A character terminal device 1 and a facsimile terminal device 2 are connected to a line control module 5 of a media conversion device 3 via a switching network 4.
When character data is transferred from , the central controller 8 stores it in the main memory 6 and instructs the media conversion module 7 to convert it, as in the conventional case, and instructs the media conversion module 7 to convert the media-converted facsimile data. After it is temporarily stored in the main storage device 8, it is transferred to the facsimile terminal device 2.

Also, as in the past, input data to media conversion is regulated by comparing the amount of media-converted facsimile data stored in the main storage device 8 with an input regulation value.

FIG. 4 is a flowchart showing the process for determining the input regulation value. In step ST1, in a connection procedure for starting communication between the character terminal device 1 and the facsimile terminal device 2 shown in FIG.
If 1 is obtained, the process proceeds to step ST2, and the media type 92 corresponding to each terminal ID 91 is obtained from the terminal media type table 9.

Next, proceeding to step ST3, the pair of the two media types 92 is replaced with two sets of pre-conversion media type 101 and post-conversion media type 102, and by referring to the media conversion type table 10, input restriction values for both directions are determined. 103 is determined.

If the amount of media-converted data in the main storage device 8 exceeds the input regulation value 103 determined in this way, the request for conversion to the media conversion module 7 is stopped.

Note that in the above embodiment, the media conversion type table 10
Although the input restriction value 103 is set as the initial value, it may be dynamically changed depending on the usage rate of the main storage device 6 in the media conversion device 3.

Furthermore, in the above embodiment, the case where the terminal media type table 9 and the media conversion type table 10 are provided in the main storage device 6 has been described, but they may be independent as separate devices, and the same as in the above embodiment may be used. be effective.

〔Effect of the invention〕

As described above, according to the present invention, the input regulation to the media conversion module is controlled based on the input regulation value corresponding to the type of media conversion obtained from the media conversion type table provided in the media conversion device. Since I configured it,
The data storage area can be optimally managed and an economical device can be obtained.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing a media conversion method according to an embodiment of the present invention, FIG. 2 is a format diagram showing its terminal media table, FIG. 3 is a diagram showing its media conversion type table, and FIG. 4 is a diagram showing its media conversion type table. FIG. 5 is a flowchart showing the input regulation value determination process, and is a block diagram showing the conventional media conversion method. 1 is a terminal device (character terminal device), 2 is a terminal device (facsimile terminal device), 3 is a media conversion device, 6 is a main storage device, 7 is a media conversion module, 8 is a central control device, 9 is a terminal media type Table 10 is a media conversion type table. In addition, in the figures, the same reference numerals indicate the same or equivalent parts. @1 Figure 1: Sending fat end! 2: Exchange tree device Figure 2 @ Figure 3

Claims (1)

[Claims] In a media conversion method, terminal devices using different media are connected to each other, data sent from the terminal device on the sending side is converted into media by a media conversion device, and the data is transferred to the terminal device on the receiving side. A terminal media type table that stores the respective media types used by the terminal device on the sending side and the terminal device on the receiving side, and a media conversion type table that stores input regulation values for the media types to be converted, in the conversion device. and determines the media type of the terminal device on the sending side and the terminal device on the receiving side by referring to the terminal media type table at the time of starting communication, and also determines the media type of the terminal device on the sending side and the terminal device on the receiving side. A media conversion method, characterized in that an input regulation value for regulating input data to media conversion is determined by referring to the media conversion type table based on the media type.