KR19980071851A - Device for transmitting / receiving a plurality of data having different gradations - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a data transmitting and receiving apparatus and a data transmitting and receiving method for transmitting font data and image data through a communication line or a broadcast means, and for receiving and displaying the transmitted data. Upon reception, the transmitting side reads out a plurality of pieces of gray data relating to the same object, and transmits the read gray data.

On the other hand, the reception side determines the optimal number of gray levels for output as an optimal number of gray levels, and analyzes the number of gray levels of the gray level data received by receiving the gray level data. Based on this analysis result, the optimal gray level data is received. It is configured to retrieve the grayscale data having a number, determine as extracted grayscale data, extract the determined extracted grayscale data, and output the extracted extracted grayscale data.

Description

A device for transmitting and receiving a plurality of data having different gradations.

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a data transmission / reception apparatus and a data transmission / reception method for transmitting font data or image data via a communication line or a broadcast, and for receiving and displaying the transmitted data.

In a data transmission / reception system, data such as a font or an image to be transmitted may be grayscale data constituted by a plurality of grayscales. When such gray scale data is transmitted, the number of gray scales that can be displayed is limited due to the capability of the playback apparatus on the receiving apparatus side, and the like, so that the gray scale data transmitted from the receiving side cannot be displayed as it is. In this case, conventionally, the reception apparatus converts the grayscale data received into data of the number of gray scales that can be displayed on the receiving side to display the data.

The operation of the conventional system for transmitting and receiving grayscale data will be described below with reference to the drawings. First, Fig. 1 shows a functional block diagram of the transmission and reception system. As shown in the figure, the transmitting and receiving apparatus is composed of a data transmitting apparatus 100 and a data receiving apparatus 200. The data transmitting apparatus 100 includes a data reading unit 101 and a data output unit 102 for transmission. And a data transmitter 103, and the data receiver 200 includes a data receiver 201, a gray data converter 202, an optimal gray scale determiner 203, and a gray data output unit 204.

2 is a flowchart showing the operation of the system. The operation will be described below according to this drawing.

(Sl1) First, on the transmitting side, the gradation data A transmitted by the data reading unit 101 of the data transmitting apparatus 100 is read. In this example, it is assumed that the four tone data shown in Fig. 10 are read.

(S12) Next, the transmission data of the format which can be transmitted to the data transmission part 103 is output from the gradation data A which the transmission data output part 0202 read.

(S13) Then, the data transmitter 103 transmits the grayscale data A generated as the data for transmission to the receiver 200.

(S14) The receiving side receives the grayscale data A transmitted from the data transmitting apparatus 100 at the data receiving unit 201.

(S15) Subsequently, the optimum gradation determination unit 203 determines the optimal gradation number that can be processed on the receiving side in consideration of the state of the playback apparatus or the like that is the output target of the gradation data output unit 204. Here, for example, it is assumed that the number of gradations that can be processed by the receiving side is determined by two gradations.

(S16) Next, the gradation data A received by the gradation data conversion unit 202 is converted into the gradation number determined by the optimum gradation determination unit 203. Here, the received grayscale data of the grayscale number 4 is converted into grayscale data of the grayscale number 2 determined by the optimum gray scale determination unit 203. In addition, when the number of grayscales determined by the optimum gray scale determining unit 203 is equal to or greater than the number of grayscale data received, no conversion is performed.

As a method of converting the gradation data of the 4 gradations to the gradation data of the 2 gradations, for example, pixels having gradation values "0" and "1" of the gradation data before conversion are not converted as they are, and the gradation values " A pixel having 2 " and " 3 " is employed to convert the gray value to " 1 ". With this conversion, the received data of four gray levels shown in FIG. 10 is converted into the grayscale data of two gray levels shown in FIG.

(S17) Finally, the gradation data output unit 204 outputs the optimal gradation number that can be processed on the receiving side, and here, the received data converted into two gradations to the playback apparatus or the like. By the above operation, the reception side can reproduce the transmission data of the gradation number exceeding the processing capacity and the like.

However, if the reception side processes the gradation data transmitted from the transmission side by the operation described above, the quality of the reproduced data may be significantly degraded. That is, in the case of converting the 4th gradation data of FIG. 10 to the 2nd gradation data of FIG. 3, portions which should not be connected in the 2nd gradation data of FIG. 3 are connected to deteriorate the quality. In this example, since the font is simple, the font can be read. However, in the case of font data having a complicated shape, it may be difficult to read the character by conversion or it cannot be discriminated at all.

This is not only caused by the deterioration of the quality caused by the decrease in the number of gray scales, but also by the conversion method such as the appearance of a shape portion unintentionally intended by the transmitting side. On the other hand, even if the number of gray scales is reduced, an appropriate display according to the level that can be displayed by the number of gray scales can be regarded as a high quality for discriminating characters. This is the same for image data as well as font data.

In the above-mentioned transmission / reception method, for example, when the transmitting side transmits only two gray scale data, the two gray scale data must be used even though the receiving side has the ability to use eight gray scale data. Not enough to use

In addition, according to the above-described method, a portion for converting the number of gradation data of the gradation data is necessary for the receiving apparatus, and the receiving apparatus without conversion means cannot reproduce or reproduce the received gradation data completely. It is also difficult to use elegance.

SUMMARY OF THE INVENTION An object of the present invention is to solve the above problems and to provide an apparatus and method for enabling appropriate reproduction of gradation data and the like without compromising the quality of the original data according to the capability of the receiving side.

1 is a functional block diagram of a conventional gradation data transmission and reception system.

2 is an operation flowchart of a conventional gradation data transmission and reception system.

FIG. 3 is an exemplary diagram of converting gray scale data of four gray scales shown in FIG. 10 into two gray scales; FIG.

4 is a block diagram showing a hardware configuration of a gradation data transmission and reception system according to an embodiment.

5 is a functional block diagram of a gray scale data transmission / reception system according to the first embodiment.

6 is a diagram showing an example of the configuration of attribute information.

FIG. 7 is a diagram showing an example of the configuration of an analysis result storage table in the first embodiment; FIG.

Fig. 8 is a flowchart showing the operation of the gradation data transmitting apparatus according to the first embodiment.

Fig. 9 is a diagram showing an example of gradation data of two gradations.

Fig. 10 is a diagram showing an example of gradation data of four gradations.

Fig. 11 is a diagram showing an example of gradation data of 8 gradations.

12A to 12C are specific examples of attribute information.

FIG. 13A is a conceptual diagram illustrating an example of a state in which grayscale data to which attribute information is added is connected; FIG.

FIG. 13B is a conceptual diagram illustrating another example in which gradation data to which attribute information is added is connected; FIG.

Fig. 14 is an operation flowchart of the gradation data receiving apparatus according to the first embodiment.

15A is a state diagram in which the first data is recorded in the analysis result storage table.

15B is a state diagram in which three data are recorded in the analysis result storage table.

16A to 16D are diagrams showing examples of analysis result storage tables created for a plurality of gradation data regarding different objects.

Fig. 17 is a diagram showing an example of a part of a functional block diagram converted when a gradation data conversion unit is provided;

FIG. 18 is a flowchart of operation of a gradation data receiving apparatus when the portion shown in FIG. 17 is replaced; FIG.

Fig. 19 is a diagram showing another example of a functional block diagram portion to be converted when a gradation data conversion unit is provided;

20 is a flowchart illustrating operations of a gradation data receiving apparatus in the case of replacing the portion shown in FIG.

21 is a functional block diagram of a gradation data transmission and reception system according to a second embodiment.

Fig. 22 is a diagram showing an example of list information.

Fig. 23 is a diagram showing another example of list information.

Fig. 24 is a diagram showing an example of an analysis result storage table in the second embodiment.

Fig. 25 is an operation flowchart of the gradation data transmitting apparatus according to the second embodiment.

Fig. 26 is a conceptual diagram showing a state in which gradation data to which ID information is added is connected.

27 is a specific example of list information.

Fig. 28 is an operation flowchart of the gradation data receiving apparatus according to the second embodiment.

Fig. 29 is a diagram showing a concrete example of the analysis result storage table according to the second embodiment.

30 is a functional block diagram of a first gradation data transmission / reception system according to a third embodiment;

Fig. 31 is an operation flowchart of the first gradation data transmitting apparatus according to the third embodiment.

32 is a concrete example of text data.

33A to 33I are concrete examples of attribute information.

Fig. 34 is a conceptual diagram showing a state in which gradation data to which attribute information is added is connected.

Fig. 35 is an operation flowchart of the first gradation data receiving apparatus according to the third embodiment.

Fig. 36 is a detailed illustration of an analysis result storage table in the first gradation data receiving apparatus according to the third embodiment.

Fig. 37 is a functional block diagram of a second gradation data transmission / reception system according to the third embodiment.

38 shows an example of list information according to a third embodiment;

Fig. 39 is an operation flowchart of the second gradation data transmitting apparatus according to the third embodiment.

Fig. 40 is a conceptual diagram showing a state in which gradation data to which ID information is added is connected.

41 is a concrete example of list information.

Fig. 42 is a flowchart of operation of the second gradation data receiving apparatus according to the third embodiment.

Fig. 43 is a detailed illustration of an analysis result storage table in the second tone data receiving apparatus according to the third embodiment.

* Explanation of symbols for main parts of the drawings

1, 1A, 1B, 1C, 1D: Gradient Data Transmitter

1a, 1b, 1c, 1d: Gradation data generating device for transmission

2, 2A, 2B, 2C, 2D: Gradient Data Receiver

11: gradation data reader 12: attribute information acquisition unit

13: attribute information adding unit 14: same target data combining unit

15: transmission data output unit 16: data transmission unit

17, 17D: list information generating unit 18: text data reading unit

19a: Gradation data extraction unit 19b: Gradation data storage unit

21: data receiving unit 22: data recording unit

23, 23c: gradation data output section 24a, 24b: gradation data analysis section

25: optimal gradation determination unit 26: extraction gradation data determination unit

27: gradation data extraction unit 28: gradation data conversion unit

51, 61: CPU 52, 62: ROM

53, 63: RAM 54, 64: Interface

55 transmission control device 56 storage device

57, 67: input device 58, 68: display device

65: reception control device

The object is achieved as follows. First, the transmitting side reads out a plurality of grayscale data having different numbers of tones related to the same object, and transmits the read plurality of grayscale data. On the other hand, the receiving side sets the optimal number of grayscales that the output target on the receiving side can process as the optimal grayscale number, analyzes the grayscale number of the received grayscale data, and based on the analysis result, the optimal grayscale number. The grayscale data having the? Is searched to determine the extracted grayscale data as the extracted grayscale data, and the extracted extracted grayscale data is extracted to output the grayscale data to the output target.

Here, "the same object" means that the form is not the same, but the meaning of the information is the same. For example, the font data "a" includes changing the shape of the letter "a", the thickness of a line, etc., for each gradation number, corresponding to the difference in the level that can be expressed for each gradation number. In addition, the gradation data to be read and transmitted may be read and transmitted one by one or may be grouped together.

In this way, a plurality of gray scale data having different gray scales related to the same object are transmitted, and the receiving side can extract the gray scale data of the optimal gray scale number according to the capability of the output target and output the gray scale data. Capabilities can be utilized and data deterioration can be prevented.

As described above, when the transmitting side organizes the plurality of grayscale data into one set for the same object, the selection object becomes clear when the receiving side selects one grayscale data from among the plurality of grayscale data for the same object, thereby simplifying and speeding up the process. Can be planned.

As a method of arranging into one set, it is possible to arrange by connecting the gradation data on the same object or by adding link information to the gradation data on the same object. In addition, "connect" means to arrange data physically adjacent. In addition, when connecting, it is preferable to perform in order according to the predetermined | standard reference regarding the number of gradations of each gradation data.

When the gradation data is concatenated as described above, the reception side may receive the plural pieces of the gradation data thus arranged, and select one gradation data for one object from among the plural physically linked data, and process Can be further accelerated. When the connection is performed in the order according to a predetermined criterion for the number of gradations of each gradation data, the receiving side can extract the gradation data more easily and quickly by using this criterion.

Then, by adding link information to the gradation data, the gradation data is organized into one set. Even though a plurality of gradation data are dispersed, the receiving side selects one gradation data for one target by using the link information. It can be specified easily, and it is not necessary to fix the transmission order of each tone data also on the transmitting side, thereby improving the flexibility of the processing.

In addition, it is preferable that the transmitting side also transmits attribute information relating to the tone data to be transmitted. As a result, the receiving side can select the gradation data having the optimal gradation number according to the processing capacity or the like among the plurality of gradation data based on the attribute information.

In addition, it is preferable to add attribute information corresponding to each of the gradation data to be transmitted, or to combine the attribute information and transmit it as list information.

When attribute information is added to each of the gray scale data in this manner, it is possible to easily interpret the attribute information added when the gray scale data is analyzed by the receiving side.

When the list information in which the attribute information is combined is transmitted, when the tone data is analyzed on the receiving side, the analysis can be performed quickly by analyzing the tone data by the list information. In addition, when the list information is transmitted first, the reception side can select the gradation data to be received in advance, and reduce the storage capacity required at the reception side by selecting only the necessary gradation data without continuously recording all the gradation data to be transmitted. Can be.

Then, on the transmitting side, it is very useful to read the text data and to simultaneously transmit each character constituting the text data to the same object and to read the text data. In addition, "text data" means the data which shows a character group and its arrangement here, and each character made into the same object may not be all of the characters which comprise text data.

In this way, the receiving side can recognize the order of listing each character constituting the text based on the transmitted text data, and selects the optimal gradation data for each character constituting the text without error from the information indicated by the text. Appropriate display and the like can be processed.

The above-described processing on the transmission side may be performed at the time of transmission, or the data for transmission may be separately prepared and output as transmission data, and may be transmitted using a single transmission device. . In addition, "output as data for transmission" means outputting in a data format that can be processed by a target transmission apparatus, and this data format varies with the ability to process data of the transmission apparatus. For example, when the transmission device converts data for transmission, it includes generating as data suitable for the conversion.

On the other hand, when the transmitting side transmits attribute information relating to the number of gray levels of each of the gray scale data in addition to the plurality of gray scale data, it is preferable that the receiving side analyzes the gray scale number of the received gray scale data based on the attribute information. . As a result, the efficiency of analysis can be increased, and the processing can be speeded up.

When the attribution information is added to each of the plurality of gradation data on the receiving side, the gradation data to be interpreted when the gradation number of the gradation data received is analyzed based on the attribution information added for each of the received gradation data. By analyzing the attribute information for each time, the analysis can be simplified and carried out quickly.

In addition, in the case of forming list information in which the attribute information is combined, the gray scale data analyzing means interprets the gray scale number of the received gray scale data based on the list information. Since the analysis is organized by the information, the analysis can be performed more efficiently.

Next, when the plurality of gradation data are connected in order according to a predetermined criterion regarding the number of gradations of each gradation data, if the receiving side causes the gradation data to be extracted with the reference, the criterion is applied to the gradation data. Since it is based, the gradation data can be extracted more easily.

On the receiving side, when there is no gradation data having the optimum gradation number among the received gradation data, the gradation data having gradation data not exceeding the optimal gradation number among the received gradation data is extracted. Can be determined as This makes it possible to reliably obtain gradation data having the number of gradations that the output target on the receiving side can process. In this case, by determining the gradation data having the maximum gradation number that does not exceed the optimum gradation number as the extracted gradation data, the best gradation for the output target when the gradation data of the optimal gradation number does not exist. A number of gradation data can be obtained.

On the other hand, in the receiving side, when there is no grayscale data having the optimal number of grayscales in the received grayscale data, the extracted grayscale data is determined according to a predetermined criterion so that the extracted grayscale data is converted into the optimal grayscale number. can do. By this, even when there is no gradation data of the optimal gradation number, the processing capacity of the output target can be sufficiently exhibited.

In this case, if the standard that has the minimum number of tones exceeding the optimum number of tones is adopted as the predetermined criterion, the processing target of the output object can be sufficiently exhibited even when there is no tone data of the optimal number of tones. As a result, the degradation of data quality due to conversion can be suppressed as much as possible.

When the same object is each character constituting the text data, and the text data is also transmitted, the receiving side can output the gradation data for each character in accordance with the text data. This allows the receiver to accurately reproduce the transmitted text.

The above and other objects and features and advantages of the present invention will become more apparent from the following detailed description taken in conjunction with the accompanying drawings.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

(First embodiment)

4 shows a hardware configuration diagram of a gradation data transmission / reception system according to a first embodiment of the present invention. The gradation data transmission / reception system is composed of a gradation data transmission device 1 and a gradation data reception device 2. The gradation data transmission device 1 includes a CPU 51 that performs arithmetic processing, a ROM 52 that records a control program, and the like, a RAM 53 and a CPU 51 serving as a work area of the CPU 51, and external input / output. And an transmission control device 55 for transmitting data to the gradation data receiving device 2 by radio waves. In addition, the gradation data transmission device 1 includes a hard disk drive for storing gradation data and the like as an external device, a storage device 56 made of a floppy disk drive, etc., an input device 57 for inputting a user's instruction, and a transmission. The display device 58 etc. which display a result etc. are connected.

The gradation data receiving device 2 includes a CPU 61 which performs arithmetic processing, a ROM 62 which records a control program, etc., a RAM 63 made up of a working area of the CPU 61, etc., and an external I / O. Interface 64 for controlling the data, and reception control device 65 for receiving the data transmitted from the gradation data transmitter 1. In addition, the gradation data receiving device 2 has a storage device 66 made of a hard disk drive or the like for storing data as an external device, an input device 67 for inputting an instruction from a user, and a gradation as an output target of gradation data. A display device 68 or the like including a CRT for displaying data and the like is connected.

The gradation data transmission device 1 and the gradation data reception device 2 having the above-described configuration are also realized by incorporating a program operating in these computers, each of which executes the operations of the elements described below in a general computer. The program can also be recorded on a recording medium such as a floppy disk that can be read by each of the computers.

Although data is transmitted and received wirelessly here, communication means by wire such as a telephone line can also be used. The hardware configuration described above is the same in the following embodiments.

Next, the functional elements of the gradation data transmission / reception system according to the first embodiment will be described. 5 is a functional block diagram of a gradation data transmission / reception system according to the first embodiment of the present invention. Here, the transceiver is shown as a gray scale data transmitter 1A and a gray data receiver 2A, respectively.

The gradation data transmitter 1A includes a gradation data reading section 11, attribute information acquisition section 12, attribute information adding section 13, the same target data combining section 14, transmission data output section 15, A data transmitter 16 is provided, except for the data transmitter 16, which forms a transmission gray scale data generating apparatus 1a.

The gradation data reading section 11 reads from the storage device 56 a plurality of gradation data having different gradations for the same object. Here, font data is transmitted as transmission data, and a plurality of gradation data are read with respect to the character of the same character code, font width, and font height prepared previously. The data to be transmitted may be any data as long as it is grayscale data, or may be image data.

The attribute information acquisition unit 12 acquires attribute information about the acquired individual tone data. Here, the acquisition of the attribute information is performed by extracting and using the information on the grayscale data in the grayscale data itself, and analyzing the grayscale data to generate the attribute information on the grayscale data. In addition, here, as the attribute information, the character code, the width and height of the font, and the size of the gray scale data are also acquired.

The attribute information adding unit 13 adds corresponding attribute information of the read gray level data, respectively. Specifically, here, the attribute information acquired by the attribute information acquisition unit 12 is added as header information at the beginning of each tone data read out as data having a structure as shown in FIG. The attribute information does not need to be header information of the gradation data, but may be added to another predetermined position. It is a matter of course that the configuration of the attribution information data may not be the above configuration as long as the gradation data can be identified.

The same object data combining unit 14 is a part for arranging a plurality of read gray level data into one set for each same object, and in this case, the criterion for linking the gray level data to which the attribute information is added to the gray level data in order from the largest number of gray levels. Connect according to. Various standards may be adopted for this connection, and the connection may be performed in order starting from the smallest number of gradations, or in order according to the frequency of use of the gradations. In this case, the data is arranged into one set by connecting, but may be arranged by adding link information to each tone data. As the link information, three kinds of character codes, font widths, and font heights in the attribute information can be used as they are. Of course, a special character string may be added to each tone data as link information.

The transmission data output unit 15 is a portion for transmitting the added grayscale data of the connected attribute information as transmission data in a format that can be transmitted by the data transmission unit 16. In addition, when the connected gradation data can be transmitted as it is by the data transmitter 16, the transmission data output part 15 outputs the connected gradation data as it is.

The data transmission unit 16 is a portion for transmitting the transmission gray level data generated by the transmission gray data generator 1a to the reception device 2A, and the transmission control device 55 corresponds to this.

On the other hand, the gray scale data receiving device 2A determines the data receiving unit 21, the data recording unit 22, the gray scale data output unit 23, the gray scale data analyzing unit 24a, the optimum gray scale determining unit 25, and the extracted gray scale data. A unit 26 and a gradation data extraction unit 27 are provided.

The data receiving unit 21 is a portion for receiving a plurality of gradation data having different numbers of gradations relating to the same object transmitted from the gradation data transmitter 1A, and the data recording unit 22 is a portion for recording the received gradation data. The gradation data output section 23 is a portion for outputting gradation data to an output object. Here, although the display apparatus 68 is used as an output object as mentioned above, as long as a process changes with gray level, such as a printer, what kind of thing may be sufficient as it.

The gradation data analysis section 24a is a part for analyzing the number of gradations of the received gradation data, and here, based on the attribute information shown in Fig. 6 added by the attribute information adding section 13 as header information to each gradation data. To analyze the number of gradations in the gradation data. At this time, the receiving side knows in advance that each of the gray scale data is connected in order from the largest to the largest gray scale data, so that the maximum number of gray scales can be quickly known, and based on this, gray scale data can be analyzed more quickly.

Further, the gradation data analysis section 24a also generates the analysis result storage table shown in Fig. 7 in accordance with the analysis result of the attribution information in Fig. 6. The analysis result storage table is classified for each character of the same character code, font width, and font height, and the number of gradation data, the index to the optimal gradation data, the gradation number of each gradation data, the data size, and the data in the data recording section 22 Record the address. The data address stores the head address in the data recording section 22 of each tone data. In the column of "Index to optimal gradation data", the address of the extraction gradation data determined by the extraction gradation data determination unit 26 described later is recorded. The structure of the analysis result storage table is not limited to the above, but may be classified first by character code, and further classified by font width and height.

The optimum gradation determination unit 25 determines the optimum gradation number that the output target of the gradation data output unit 23, and here, the display device 68, can process. For example, when the display device 68 to be output can process only up to eight gray scales, the optimal number of gray scales is determined to be eight gray scales. The optimum number of gradations depends on the gradation processing capability of the output target, and differs in each case when there are a plurality of reception locations. In general, the optimal number of gradations is determined by the gradation processing capability of the output target, but the optimal gradation number varies depending on the number of colors used, for example, when several colors are used for different purposes in the output target. There may also be. In addition, although the optimal gradation number is determined here only from the processing capability of an output object, you may refer also to the said analysis result table. By doing this, for example, when the output target knows that the character code is a simple character code or a large character from the analysis result table, the optimum number of gray scales can be changed according to the difference of characters, such as increasing the optimal number of gray scales. Will be.

The extracted gradation data determining unit 26 searches for gradation data having the determined optimal gradation number among the gradation data received on the basis of the analysis result by the gradation data analyzing unit 24a and determines it as the extracted gradation data. However, when there is no grayscale data having a predetermined optimal grayscale number in the received grayscale data, grayscale data having a grayscale number not exceeding the optimal grayscale number among the received grayscale data is determined as the extracted grayscale data.

The gradation data extracting unit 27 is a part for extracting the extracted gradation data determined by the extracting gradation data determining unit 26. Specifically, the corresponding tone data is extracted from the data recorder 22 with reference to the address of the tone data determined by the extraction tone data determination unit 26 recorded in the analysis result storage table shown in FIG. This is sent to the gradation data output unit 23 in accordance with the output request.

Next, operation of the gradation data transmission / reception system having the above configuration will be described. First, the operation of the transmitting side will be described based on a flowchart showing the operation of the gradation data transmitting apparatus 1A shown in FIG.

In this case, it is assumed that three types of gradation data of 2, 4, and 8 gradation shown in Figs. 9, 10, and 11 respectively having the same font width and height as the character of "pressure" are transmitted. . Each of these employs font data of an appropriate shape corresponding to the level that can be displayed by the respective gradation numbers. These grayscale data are bitmaps having a gradation value from 0 to (number of gradations -1) in one pixel. For example, in the case of 8 gradation data, the gradation data has a value from 0 to 7 in one pixel. In this example, white is assigned as the minimum gray value, black as the maximum gray value, and gray, which is an intermediate color between white and black, in between, but this may be any other color. The transmitting side preliminarily prepares a plurality of gradation data having such different gradation numbers and records them in the storage device 56.

(S101) On the transmission side, the gradation data reading unit 11 reads gradation data group X such as the plural gradation data shown in Figs.

(S102) Next, the attribute information acquisition unit 12 acquires attribute information of the gradation data for each gradation data read by the gradation data reading unit 11. Here, in addition to 2, 4, and 8, which are the gradation numbers of each gradation data, the character code "0x3035", font width "16", font height "16", and the data of the respective gradation data according to the Japanese Industrial Standard of "Pressure" are shown here. The size "32", "64", "96" is acquired.

(S103) Subsequently, attribute information corresponding to each of the gradation data read out by the attribute information adding unit 13 is added. Here, as described above, the attribute information is used as the header information shown in Fig. 6, and this is added as a header of each tone data. Header information added to each of the gradation data shown in Figs. 9 to 11 is shown in Figs. L2, (b) and (c).

(S104) Next, the same target data combiner 14 connects the respective gradation data to which the attribute information is added. Here, as described above, each tone data is arranged in order from the largest to the tone number. Here, the first 8 gradation data, the second 4 gradation data, and the third 2 gradation data are generated. As a result, what shows an example of the generated data as a conceptual diagram is shown to FIG. 13 (a). As shown in Fig. 13B, information common to the attribute information, here, the character code, font width, and font height are recorded as information common to the header portion of the combined tone data, and is unique to each tone data. Only the attribution information, here, the number of gray levels and the data size may be added.

(S105, S106) And the grayscale data connected to the data transmission section 15 for transmission is output to the data transmission section 16 as transmission data in a format that can be transmitted by the data transmission section 16, and the received data transmission section (16) transmits this grayscale data to the grayscale data receiving apparatus 2A.

Subsequently, the operation of the receiving side will be described based on a flowchart showing the operation of the gradation data receiving apparatus 2A shown in FIG.

(S201, S202) On the receiving side, the data receiving unit 21 receives the tone data having the structure shown in Fig. 13A. The data recording section 22 records the received data.

(S203) Next, the gradation data analysis unit 24a analyzes the attribute information added to the received gradation data. Then, the gradation data analysis section 24a creates an analysis result storage table in the format shown in Fig. 7 from the results of the analysis as described above.

Referring to the procedure for creating the analysis result storage table, first, the received tone data as shown in Fig. 13A is analyzed from the beginning of the data. Then, since the font width, height, and character code appear first in the attribute information of the first data, the font width, height, character code, gradation number, data size, and data address are stored in the analysis result storage table. Set the number to l. As a result, it becomes as (a) of FIG. In addition, since it is known here that the received data is arranged in order from the larger the gradation, it can be seen that the number of the gradation data is at most 8. The same process is performed for the second and subsequent attribute information. However, if the same analysis result has the same font width, height, and character code, the gradation number, data size, and data address are recorded in the analysis result storage table where it is recorded. In addition, the number of gradation data is increased by one. As a result of this processing, an analysis result storage table as shown in FIG. 15B is generated from the grayscale data in FIG.

In this case, only the same character code, font width, and height are transmitted as the grayscale data to be transmitted. However, when various character codes, font widths, and heights are transmitted in combination, the font width, height, and character code are displayed. Since others are stored in separate analysis result storage tables, as a result, a plurality of analysis result storage tables shown, for example, in FIGS. 16A to 16D are generated.

(S204) Then, the optimum gradation determining unit 25 determines the optimal gradation number that can be processed by the display device 68, which is the output target of the gradation data output unit 23, as the optimal gradation number.

(S205) Subsequently, the extracted gradation data determination unit 26 extracts the gradation data analysis unit 24a based on the optimum gradation number determined from the received gradation data based on the analysis result, that is, the analysis result storage table. Determine the gradation data. At this time, it is determined whether or not there is data of the optimal number of gradations among the received gradation data.

(S206, S207) If there is data of the optimal gradation number among the data received here, it is determined as gradation data from which the data is extracted. On the other hand, if there is no data of the optimal number of gray scales in the received data, it is determined as grayscale data for extracting the maximum gray scale data which does not exceed the optimal number of gray scales in the received data. For example, when the optimal gradation number is set to 8 gradations, since the received data includes gradation data of 8 gradations, it is determined as gradation data from which the gradation data is extracted. On the other hand, when the optimal gradation data is set to 5 gradations, since there is no gradation data of 5 gradations among the received data, gradation data for extracting the maximum gradation data not exceeding the 5 gradations, that is, 4 gradation data Decide as The determined address of the extracted gradation data is recorded in the "Index to optimal gradation data" column of the analysis result storage table.

(S208, S209) Then, the gradation data extraction section 27 extracts the determined gradation data from the data recording section 22 by the data size with reference to the address of the gradation data recorded in the analysis result storage table. Finally, in accordance with the output request, the extracted gradation data extracted by the gradation data extraction section 27 is sent to the gradation data output section 23, and the gradation data output section 23 outputs the extracted gradation data as an output object.

By the above operation, by transmitting plural kinds of gradation data having different gradations and selecting and using the optimal gradation data on the receiving side, it is possible to display high-quality data that fully utilizes the capability of the receiving side. .

In addition, in the above embodiment, when there is no data of the optimal number of grayscales in the received grayscale data, the receiver 2A extracts the maximum grayscale data not exceeding the optimal number of grayscales and outputs them. However, if there is no data of the optimal number of grayscales in the received grayscale data, it is also conceivable to extract the minimum grayscale data exceeding the optimal grayscale number, convert it into data of the optimal grayscale number, and output it.

In this case, the gradation data conversion section 28 is provided between the portions of the gradation data extraction section 27 to the gradation data output section 23 in the receiver 2A as shown in FIG. The extracting gray level data determining unit 26 may extract the smallest gray level data exceeding the optimal number of gray levels.

The operation of the receiving apparatus in this case will be described briefly using the flowchart shown in FIG. It is assumed that the gradation data to be received is the same as in the above embodiment. It is the same as S201 to S205 of FIG. 14 until it determines whether there is an optimal grayscale number among the first received data (S301 to S305). Here, in the case where there is received data having the same number of gray levels as the optimum number of grays, the same as in S206, S208, S209 of Fig. 14 (S306, S307, S311).

On the other hand, when there is no received data with the same number of gray levels as the optimal number of gray levels, the extracted gray level data determining unit 26 determines the minimum gray level data exceeding the optimal number of gray levels among the received data as the extracted gray level data (S308). For example, when the optimal gradation number is three gradations, the gradation data extracting unit 27 determines the gradation data of four gradations, which is the minimum gradation number exceeding the gradation number in the received data, as the extracted gradation data.

Next, the gradation data extraction section 27 extracts the determined extracted gradation data from the data recording section 22 (S309), and the gradation data conversion section 28 converts the gradation (S310). Then, the data converted by the gradation data conversion unit 28 is sent to the gradation data output unit 23 according to the output request, and the gradation data output unit 23 outputs the extracted gradation data as an output object (S311). .

According to this operation, when there is no received data of the optimal number of gray scales, the gray level data to be converted can be made most suitable for conversion among the received data, and the receiving side can perform processing such as display at the optimal gray number.

By the way, when there is no reception data of the optimal gradation number, conversion is not performed uniformly, and in some cases, the reception data of the maximum gradation number which does not exceed the optimal gradation number like the reception device A may be extracted. .

In this case, in the receiving device 2A, a gradation data conversion section 28 is provided between the gradation data extraction section 27 and the gradation data output section 23 as shown in FIG. At the same time, data can be sent directly from the gradation data extraction section 27 to the gradation data output section 23.

Then, when there is no reception data of the optimal gradation number, the extraction gradation data determination unit 26 extracts the reception data of the minimum gradation number exceeding the optimal gradation number when converting the extracted data according to a predetermined condition. If it is determined as data and not converted, it is determined as gradation data for extracting received data of the maximum gradation number that does not exceed the optimal gradation number.

In this case, if the optimal gray number is not included in the received data as the predetermined condition, the received data is converted if the optimal gray number exceeds two gray levels within the received data. Otherwise, the received data is not converted. Do not do it. The intention of this condition is to prevent the deterioration of the quality due to conversion by keeping the system of data to be converted even within two tones. In addition, although it is determined here that there is no received data exceeding the optimal number of gradations within the range of 2 gradations, of course, this is not limited to within 2 gradations, and the above predetermined condition can employ various things.

The operation of the receiving apparatus in the case of having such a configuration will be briefly described using the flowchart shown in FIG. Assume that the gradation data to be received is the same as in the above embodiment. Until the first received data is judged whether or not there is an optimal number of gray scales, it is also the same as S201 to S205 in FIG. L4 (S401 to S405), where there is received data having the same gray scale number as the optimal gray scale number. It is the same as S206, S208, S209 of FIG. 14 (S406, S407, S413).

On the other hand, when there is no reception data of the number of gray levels equal to the optimal number of gray levels, the extraction gray level data determining unit 26 determines whether or not the optimal number of gray levels in the received data exceeds the range within 2 gray levels ( S408). Here, when it is determined that there is no such received data, the extraction gradation data determination unit 26 extracts the reception data of the maximum gradation number that does not exceed the optimal gradation number as in the case of the receiver 2A. The data is determined as data (S409), and the gradation data extractor 27 extracts the determined received data (S407). In this case, the extracted received data is not converted, and the grayscale data extracting unit 27 outputs the grayscale data output unit 23 to the grayscale data output unit 23 as it is, according to the output request (S413).

If the extracted gradation data determining unit 26 determines that the optimum gradation number exceeds two gradations within the received data, gradation data for extracting received data of the minimum gradation number exceeding the optimal gradation number The tone data extracting unit 27 extracts the tone data (S411). Next, the gradation data converter 28 converts the extracted received data (S412), and the gradation data output unit 23 outputs the converted data in accordance with an output request (S413).

If the quality of the received data is reduced by this operation, the output data can be transformed and outputted to the maximum, thereby making the most of the capability of the output object. It is possible to output the best one of the plurality of gradation data prepared, so that the processing by the best receiving side can be performed.

By the way, in the above embodiment, the tone data to be transmitted are connected by the same target data combiner 14. This is for the convenience of processing on the receiving side, but there is no problem even when gradation data is not connected, and each gradation data may be transmitted instantaneously. In this case, the reception device side can analyze the gradation data for the same object using the character code, the font height, and the font width in the attribute information serving as the link information. In this case, the reception time of the data is shifted on the receiving side, but the configuration of the transmitting apparatus can be simplified.

In the above embodiment, a plurality of tonal data relating to the same object is connected. However, when a plurality of objects are transmitted, a plurality of tonal data about each object is connected and the data connected to the plurality of data are added. May be connected by any criteria. For example, a plurality of transmission targets may be connected on the basis of connecting ones having the same character code into one.

In the above embodiment, the transmitter 1A incorporates the transmission tone data generating apparatus 1a according to the present invention. However, the transmission gradation data generation device 1a is provided independently, and the transmission gradation data generated by this device is recorded on a recording medium such as a floppy disk, and read and transmitted by a normal transmission device. You may also do so.

(2nd Example)

21 is a functional block diagram of a gradation data transmission / reception system according to the second embodiment of the present invention. The gradation data transmission / reception system is composed of a gradation data transmission device 1B and a gradation data reception device 2B. Here, the font data is transmitted as the transmission data, and a plurality of gradation data are transmitted with respect to characters of the same character code, font width, and font height. Note that the data to be transmitted is not limited thereto, as in the first embodiment.

The gradation data transmitter 1B includes a gradation data reader 11, attribute information acquisition unit 12, the same target data combiner 14, a data output unit 15 for transmission, a data transmitter 16, list information. It is comprised of the generation part 17, and the part except the data transmission part 16 comprises the gradation data generation apparatus lb for transmission. Incidentally, the gradation data reading section 11, the attribution information obtaining section 12, the same target data combining section 14, the transmitting data output section 15, and the data sending section 16 are the same as in the first embodiment.

The list information generation unit 17 generates the combination of the attribute information acquired by the attribute information acquisition unit 12 as list information. The structure of list information is shown in FIG. As in the case of the first embodiment, the attribute information acquisition unit 12 acquires the number of gradations, the character code, the width and height of the font, and the size of the gradation data as the attribute information of the gradation data. Get the attached ID number. If the ID number is not attached to the grayscale data, the ID number is attached to the grayscale data to obtain it. Then, the list information generating unit 17 combines the attribute information relating to the respective gradation data, adds a code indicating the attribute information to the header portion, and generates list information having the structure as shown in FIG. The attribute information is made to match the order of the gradation data connected by the same target data combiner 14.

Note that the list information is not limited to the structure shown in Fig. 22. For example, the attribute information may be classified and sorted by any criteria. Specifically, as shown in FIG. 23, for example, the same character codes, font widths, and heights are classified into header information, and only the number of gray levels of gray data having these attribute information, the data size, and the number of data IDs are combined. A structure can also be adopted. Incidentally, the gray scale data and the attribute information are associated by recording the ID information of the individual gray scale data as the attribute information. However, this may, for example, record the sequence of the connected gray data as a serial number. Similarly, the ID information and the serial number may not be provided as long as the connection order of the gradation data and the combination order of the corresponding attribute information in the list information are the same. In addition, when ID information or serial number is recorded in list information, it is not necessary to combine the gradation data corresponding to the attribute information of list information in the same order.

The gray scale data receiving apparatus 2B includes a data receiver 21, a gray scale data output unit 23, a gray scale data analyzing unit 24b, an optimal gray scale determining unit 25, an extracted gray scale data determining unit 26, and gray scale data extraction. It consists of a portion 27. The data receiving section 21, the gradation data output section 23, the optimum gradation determining section 25, the extracted gradation data determining section 26, and the gradation data extracting section 27 are the same as those in the first embodiment.

The gradation data analysis section 24b analyzes the gradation number of the gradation data received by the gradation data transmission device 1B according to the list information. At this time, the analysis result storage table shown in FIG. 24 is generated based on the analysis result similarly to the case of the first embodiment. The difference between this analysis result storage table and the analysis result storage table shown in Fig. 7 is that the ID of the gray scale data is recorded instead of the data address of the individual gray scale data, and the ID of the extracted gray data is recorded instead of the data address of the extracted gray data. Is that. The analysis result storage table is not limited to this structure as in the first embodiment. When the serial number of the gradation data connected instead of the ID of the gradation data is recorded in the list information, this serial number is recorded instead of the ID of the gradation data. Although the serial numbers are not recorded, when the connection order of the gradation data and the combination order of the corresponding attribute information in the list information match, the serial numbers are recorded in the order of analyzing the attribute information in the list information.

Next, the operation of the gradation data transmission / reception system having the above configuration will be described. First, the operation of the transmitting side will be described based on a flowchart showing the operation of the gradation data transmitting apparatus 1B shown in FIG.

Here, it is assumed that three types of gradation data group X of two, four, and eight gradations relating to the letters " pressure " shown in Figs. 9, 10, and 11 are transmitted as transmission targets.

(S501, S502) Similarly to the first embodiment, on the transmitting side, the gradation data reading section 11 reads the gradation data group X made up of the plural gradation data shown in Figs. Attribute information is obtained for the individual tone data read in (12). The information to be acquired is not only listed in the first embodiment, but also ID information of each tone data is acquired. Here, ID information of each tone data is set to "0001", "0002" and "0003", respectively.

(S503) Then, the same target data combiner 14 connects the read plurality of tone data. Here, too, each gradation data is arranged in order from the largest gradation number and connected. As a result, the generated data is shown in FIG. 26 as a conceptual diagram.

(S504) Subsequently, the list information generation unit 17 combines the acquired attribute information to generate list information. As described above, this combining order is made to match the connecting sequence of the corresponding gradation data connected by the same target data combiner 14. As a result, the generated list information is shown in FIG.

(S505, S506) Then, the transmission data output unit l5 first outputs the generated list information to the data transmission unit 16 as transmission data in a format that can be transmitted by the data transmission unit 16, and this is output. The received data transmitter 16 transmits this list information to the gradation data receiver 2B.

(S507, S508) The transmission data output section l5 also outputs the connected gradation data to the data transmission section 16 as transmission data in a format that can be transmitted by the data transmission section 16, and receives the received data. The transmitter 16 transmits this grayscale data to the grayscale data receiving apparatus 2B. In addition, in the case where the grayscale data is transmitted, the data transmitter 16 transmits the list information so as to transmit the data after a predetermined time elapses.

Subsequently, the operation of the receiving side will be described based on a flowchart showing the operation of the gradation data receiving apparatus 2B shown in FIG.

(S601) The receiving side first receives the list information shown in Fig. 27 from which the data receiving unit 21 is transmitted.

(S602) Next, the gradation data analyzer 24b analyzes the list information received. Then, the gradation data analysis section 24b creates an analysis result storage table in the format shown in Fig. 24 from the results of the analysis as described above.

The procedure for preparing the analysis result storage table is almost the same as the procedure for preparing the analysis result storage table according to the first embodiment. The list information is analyzed from the beginning of the data, and the first font width, height, and character code shown are stored in the analysis result storage. The number of gradation data is set to one. The same processing is performed on the second and subsequent attribute information. However, if the same analysis result has the same font width, height, and character code, the gradation number, data size, and data are recorded in the analysis result storage table in which it is recorded. The number of gradation data is increased by one by adding an ID. Also, it is understood that the received data is listed in order from the larger the gradation, so that it can be seen that the maximum number of the gradation data is eight. As a result of this processing, the analysis result storage table as shown in FIG. 29 is generated from the gray scale data in FIG.

In this case, only the same character code, font width, and height are transmitted as the tone data to be transmitted. However, when various character codes, font widths, and heights are transmitted in the same manner as in the first embodiment, Since font widths, heights, and character codes are different, they are stored in a separate analysis result storage table, thereby generating a plurality of analysis result storage tables.

In this case, the ID information of each grayscale data is recorded in the list information. When the serial number of the grayscale data is recorded, the serial number of the grayscale data is recorded in the analysis result storage table. Also, even when the serial number is not recorded, the order of the gradation data and the attribute information in the list information corresponding here are identical, so the serial numbers may be recorded in the order in which the attribute information is read from the list information.

(S603) Next, the optimum gradation determining unit 25 determines the optimal gradation number that the output target of the gradation data output unit 23 can process as the optimal gradation number.

(S604) Subsequently, the extracted gradation data determination unit 26 determines the optimal gradation number among the attribute information of the gradation data recorded in the list information based on the analysis result by the gradation data analysis unit 24b, that is, the analysis result storage table. The tone data to be extracted is determined on the basis of. At this time, it is determined whether or not there is data of the optimal gradation number among the attribute information of the gradation data recorded in the list information.

(S605, S606) If gray scale data of the optimal gray scale number is displayed in the attribute information of the gray scale data recorded in the list information here, the gray scale data for extracting the gray scale data is determined. On the other hand, if gray scale data of the optimal gray scale number is not displayed in the attribute information, the gray scale data is determined as gray scale data for extracting the maximum gray scale data within the gray scale data indicated by the attribute information and not exceeding the optimal gray scale number. Here, for example, it is assumed that gradation data of four gradations is determined as extracted gradation data. The determined ID of extracted gradation data is recorded in the "optimum gradation data ID" column of the analysis result storage table.

(S607) Then, the data receiving unit 21 receives the connected gradation data transmitted from the gradation data transmitter 1B.

(S608) Then, the gradation data extracting unit 27 refers to the extracted gradation data with reference to the ID information of the gradation data recorded in the analysis result storage table, and stores the gradation data in the plurality of connected gradation data received. Extract. Here, since the gradation data of the 4 gradations has been determined as the extracted gradation data, the gradation data extraction unit 27 refers to " 0002 " which is ID information of the gradation data of the 4 gradations recorded in the analysis result storage table, Gray level data having ID information of "0002" is extracted from the gray level data.

When the serial number of the grayscale data is recorded in the analysis result storage table, desired data is extracted from the data size of each grayscale data and the serial number of the extracted grayscale data. For example, now, the extracted gradation data is the gradation data of the fourth gradation, and the number 2 is recorded as the serial number in the analysis result storage table. Therefore, the gradation data extraction unit 27 extracts the second data from the gradation data connected. Since the first data size is 96, four gray levels of data are extracted by introducing 64 pieces of data, which are four gray levels of data, from an address read by 96 skips from the beginning of the transmitted gray level data.

(S609) Finally, the extracted gradation data extracted by the gradation data extraction unit 27 is sent to the gradation data output unit 23 according to the output request, and the gradation data output unit 23 outputs this to the output target.

By this operation, similarly to the first embodiment, a plurality of types of gradation data having different numbers of gradations are transmitted, and the highest gradation data that maximizes the capability of the receiving side is displayed by selecting and using the optimal gradation data on the receiving side. can do. Since the list information of the gray scale data is first transmitted and received, the attribute and ID information or the order of the gray scale data can be known in advance, so that only necessary gray scale data can be introduced, thereby reducing the memory capacity and processing. Simplification can be realized.

Also in the second embodiment, when there is no data of the optimal number of grayscales in the received grayscale data as in the first embodiment, the minimum grayscale data exceeding the optimal number of grayscales is extracted, and this is the data of the optimal grayscale number. It is also conceivable to convert the data into a gray scale output unit. In this case, the gray scale data receiving unit 2B is also shown in FIG. 17 between the portions from the gray scale data extracting unit 27 to the gray scale data output unit 23. As described above, the gradation data conversion section 28 may be provided so that the gradation data determination section 26 extracts the minimum gradation data exceeding the optimal number of gradations.

In addition, when there is no received data of the optimal number of gray levels, conversion is not performed uniformly, and in some cases, the received data of the maximum number of gray levels not exceeding the optimal number of gray levels may be extracted. Similarly to the embodiment, the gradation data converter 28 is provided between the portions from the gradation data extracting unit 27 to the gradation data output unit 23 in the gradation data receiving apparatus 2B. At the same time, the data may be sent directly from the gradation data extraction section 27 to the gradation data output section 23.

Operation in this manner is the same as the operation described in the first embodiment, and will be omitted.

Incidentally, although the gradation data is connected in the above embodiment, if link information is added to the gradation data, there is no problem even if it is not connected, and each gradation data may be sent out in order.

In addition, in the above embodiment, a sign indicating that the list information is attribute information is given. However, if the transmission order is determined in advance, for example, the attribute information must be transmitted first in the order of the attribute information, and the second gray level data. It is understood that the data of? Is attribute information, and the data following it is grayscale data. In addition, although the code | symbol which shows the attribute information on the list information side was attached here, you may give the code | symbol which shows gradation data to the gradation data side.

Next, here, the list information and the gray scale data are transmitted by setting the time difference. However, when the data recording unit is provided in the gray data receiving apparatus 2B as in the case of the first embodiment, the timing for transmitting the list information and the gray scale data is Any may be used, and list information and gradation data may be combined and transmitted.

In the same manner as in the first embodiment, the transmission gradation data generation device 1b is provided independently of the transmission gradation data generation device 1b, and the transmission gradation data generation device la is generated by the device. Tone data may be recorded on a recording medium such as a floppy disk, and then read and transmitted by an ordinary transmitter.

(Third embodiment)

30 is a functional block diagram of a first gradation data transmission / reception system according to the third embodiment of the present invention. This gradation data transmission / reception system also includes a gradation data transmission device 1C and a gradation data reception device 2C. In the third embodiment, a plurality of tone data for a character string is transmitted and received.

The gradation data transmission device 1C includes a gradation data reading section 11, attribute information acquisition section 12, attribute information adding section 13, the same target data combiner 14c, transmission data output section 15, The data transmitter 16, the text data reader 18, the gradation data extractor 19a, and the gradation data storage 19b are included, except for the data transmitter 16. The gradation data generator 1c for transmission is provided. ). The gradation data reading section 11, attribution information acquisition section 12, attribution information addition section 13, transmission data output section 15, and data transmission section 16 are similar to those of the first embodiment.

The text data reader 18 is a part for reading text data. Here, the character code string of each character constituting the text is read as text data. In addition, the text data reading unit 18 outputs the read text data to the transmission data output unit 15, and the transmission data output unit 15 also transmits the text data to the data transmission unit 16 as data for transmission. Output

The gradation data storage unit 19b stores plural gradation data relating to the character indicated by the character code for all the character codes. Here, it is assumed that gradation data of two gradations, four gradations, and eight gradations is stored for each character code.

The gradation data extracting unit 19a extracts a plurality of gradation data corresponding to each character, that is, each character code constituting the text data read by the text data reading unit 18, and outputs it to the gradation data reading unit 11. do.

The same target data combiner 14c is a portion which connects a plurality of tone data as in the first embodiment, but first, a plurality of tone data relating to each character code are connected in order from the largest to the number of tones, and this data is connected. Are concatenated in order of the smallest character code. In addition, as in the case of the first embodiment, if link information is added to the gray scale data, the gray scale data need not be connected, and various forms of connection can be employed.

The gray scale data receiving apparatus 2C includes a data receiver 21, a data recording unit 22, a gray scale data output unit 23c, a gray scale data analyzing unit 24a, an optimum gray scale determining unit 25, and an extracted gray scale data determining unit ( 26, the gradation data extracting section 27 is formed. The data receiving section 21, the data recording section 22, the gradation data analyzing section 24a, the optimum gradation determining section 25, the extracted gradation data determining section 26, and the gradation data extracting section 27 are shown in the first embodiment. It is the same as by.

The gradation data output section 23c outputs the gradation data extracted by the gradation data extraction section 27 in accordance with the text data transmitted from the gradation data transmission device 1C, that is, in the order of the character codes.

Next, the operation of the gradation data transmission / reception system having the above configuration will be described below. First, the operation of the transmitting side will be described based on a flowchart showing the operation of the gradation data transmitter 1C shown in FIG.

Here, text data relating to the character string "Aiu" will be assumed to be the transmission target. The character codes according to the Japanese Industrial Standard for each character constituting the character string relating to "Iowa" are "0x2422", "0x2424" and "0x2426", respectively, and the text data is as shown in FIG.

(S701, S702) The text data reading unit 18 reads the text data shown in FIG. 32, and the gradation data extracting unit 19a stores the gradation data corresponding to the plurality of gradation data corresponding to each character code constituting the text data. It extracts from the storage 19b.

(S703 to S705) Next, similarly to the first embodiment, the gradation data reading unit 11 reads out the plurality of extracted gradation data, and the attribute information obtaining unit 12 gradations for each read gradation data. Get attribute information of the data. Then, the attribute information adding unit 13 adds attribute information corresponding to each of the read gradation data. Here again, attribute information is used as header information, and this is added as a header of each tone data. Examples of the attribute information obtained here are shown in Figs. 33A to 33I.

(S706) Then, the same target data combiner 14c connects the respective gradation data relating to the same character code to which attribute information is given. That is, gradation data concatenated for each character code constituting the text data is created. Here again, as described above, the respective gradation data are arranged in order from the highest gradation number, and the connected data is again linked in order from the smallest character code. Fig. 34 shows conceptually the connection result.

(S707 to S709) Then, the grayscale data and the text data to which the transmission data output unit 15 is connected are output to the data transmission unit l6 as transmission data in a format that can be transmitted by the data transmission unit 16. The received data transmitter 16 transmits this text data and gray data to the gray data receiver 2C.

Subsequently, the operation of the receiving side will be described based on a flowchart showing the operation of the gradation data receiving device 2C shown in FIG.

On the receiving side (S801 to S803), the data receiving unit 21 receives the transmitted text data and the gradation data. The received data is then recorded in the data recording section 22.

(S804) Next, the gradation data analysis unit 24a analyzes attribute information added to the received gradation data. Then, as described above, the gradation data analysis section 24a creates an analysis result storage table of the format shown in Fig. 7 for each character code. As described above, different character codes are stored in a separate analysis result storage table. As a result of this processing, three analysis result storage tables corresponding to each character of "a", "i" and "right" as shown in FIG. Is generated.

(S805 to S808) Then, similarly to the first embodiment, the optimum gradation number is determined by the optimum gradation determining unit 25, and the individual gradation code data is determined by the extracted gradation data determining unit 26 on the basis of the optimal gradation number. The tone data to be extracted is determined. The address of the determined extracted gradation data is recorded in the index column to the optimum data in the analysis result storage table.

(S809, S810) Then, the gradation data extraction section 27 draws out the determined gradation data from the data recording section 22 for each character code by the data size with reference to the address of the gradation data recorded in the analysis result storage table. Finally, in accordance with the output request, the gradation data extraction section 27 sends out the gradation data extracted by the gradation data output section 23c, and the gradation data output section 23c according to the order of the characters of these gradation data text data. Output to the output destination. As a result, each character constituting the "ai" is displayed on the output target and the like with the appropriate number of gradations without error.

The first gradation data transmission / reception system of the third embodiment is to develop the gradation data transmission / reception system according to the first embodiment to transmit and receive text data, but the same purpose is developed by developing the gradation data transmission / reception system according to the second embodiment. Can be achieved.

This gradation data transmission / reception system will be described as a second gradation data transmission / reception system of the third embodiment. 37 shows a functional block diagram of this gradation data transmission / reception system. This gradation data transmission / reception system also includes a gradation data transmission device 1D and a gradation data reception device 2D.

The gradation data transmission device 1D includes a gradation data reading section 11, attribute information acquisition section 12, the same target data combining section 14c, a data output section 15 for transmission, a data transmission section l6, and list information. It is composed of a generation unit 17D, a text data reading unit 18, a gradation data extracting unit 19a, and a gradation data storage unit 19b, except for the data transmitting unit 16. ). The gradation data reading section 11, attribute information obtaining section l2, transmission data output section 15, and data sending section 16 are the same as those of the second embodiment, and the same target data combining section 14c and text The data reading section 18, the gradation data extracting section 19a, and the gradation data storage section 19b are the same as those of the gradation data transmitting apparatus 1C of the first gradation data transmission / reception system.

As in the case of the second embodiment, the list information generation unit 17D generates a list information that combines the attribute information acquired by the attribute information acquisition unit 12 as list information. As a method of combining this attribute information, first, attribute information is combined with respect to each character code so as to match the order of the gradation data connected by the same target data combiner 14 to have a structure as shown in FIG. , Combine them in order from smallest to smallest.

However, the structure of this list information is not limited to the above-mentioned thing, For example, the structure of FIG. 38 can also be employ | adopted. As in the case of the second embodiment, the gradation data can be identified by various methods such as an ID number and a serial number.

The gray scale data receiving device 2D includes a data receiver 21, a gray scale data output unit 23c, a gray scale data analyzing unit 24b, an optimal gray scale determining unit 25, an extracted gray scale data determining unit 26, and gray scale data extraction. It consists of a portion 27. The data receiving section 21, the gradation data analyzing section 24b, the optimum gradation determining section 25, the extracted gradation data determining section 26, and the gradation data extracting section 27 are the same as those according to the second embodiment, and the gradation data The output unit 23c is the same as that of the gradation data transmitter 1C of the first gradation data transmission / reception system.

Next, the operation of the gradation data transmission / reception system having the above configuration will be described below. First, the operation of the transmission side will be described based on a flowchart showing the operation of the gradation data transmitter 1D shown in FIG. Here, it is assumed that the text data relating to the character string "ai" is to be transmitted.

(S901, S902) The text data reading unit 18 reads out the text data, and the gradation data extracting unit 19a stores the plurality of gradation data corresponding to each character code constituting the text data. Extract from.

(S903, S904) Next, similarly to the second embodiment, the gradation data reading unit 11 reads out the plurality of extracted gradation data, and attributes the respective gradation data read out by the attribute information acquisition unit 12. Obtain information.

(S905) Then, the same target data combiner 14c connects each of the plurality of gradation data relating to the same character code. That is, gradation data concatenated for each character code constituting the text data is created. Here, as described above, the respective gradation data are arranged in order from the highest gradation number, and the connected data is further connected in order from the smallest character code. The conceptual diagram of the connected state is shown in FIG.

(S906) Subsequently, as in the second embodiment, the list information is generated by combining the attribute information acquired by the list information generation unit 17D. As described above, the combining order is made to match the connecting sequence of the corresponding gradation data connected in the same target data combiner 14c, and the combined data is sequentially combined again from the smallest character code. An example of the generated list information is shown in FIG.

(S907, S908) Next, the transmission data output unit 15 first outputs the generated list information to the data transmission unit 16 as transmission data in a format that can be transmitted by the data transmission unit 16, The data transmission unit 16 that has received this transmits this list information to the gradation data reception device 2D.

(S909 to S911) Then, the transmission data output unit 15 outputs the connected gradation data and text data to the data transmission unit 16 as transmission data in a format that can be transmitted by the data transmission unit 16. The received data transmitter 16 transmits the text data and the gray data to the gray data receiver 2D.

Subsequently, the operation of the receiving side will be described based on a flowchart showing the operation of the gradation data receiving apparatus 2D shown in FIG.

(S1001) On the receiving side, first, the data receiving unit 21 receives the transmitted list information.

(S1002) Next, the gradation data analysis unit 24b analyzes the received list information. Then, the gradation data analysis section 24b additionally creates an analysis result storage table from the results of the analysis as in the second embodiment. As described above, different character codes are stored in a separate analysis result storage table. As a result of this processing, three analysis results corresponding to each character of "a", "i" and "right" as shown in FIG. A storage table is created.

(S1003 to S1006) Then, similarly to the second embodiment, the optimum gradation determining unit 25 determines the optimal gradation number, and the extracted gradation data determination unit 26 relates to each character code based on the optimal gradation number. The tone data to be extracted is determined. The determined ID of extracted gradation data is recorded in the "ID of gradation data" column of each analysis result storage table.

(S1007 to S1009) Then, the data receiving unit 21 receives the text data, and the gradation data extracting unit 27 refers to the ID information of the gradation data recorded in the analysis result storage table for each character code, and receives the received data data. Extracted gradation data determined in the gradation data connected are extracted. Finally, in accordance with the output request, the gradation data extracted from the gradation data extraction section 27 to the gradation data output section 23c is sent out, and the gradation data output section 23c sends these gradation data to the order of the characters of the text data. According to the output target. As a result, it is also possible to appropriately display the character of "ai" as an output target with respect to each character constituting "ai" without error.

In the present embodiment, the gradation data extraction unit 19a and the gradation data storage unit 19b are used to extract a plurality of gradation data for each character constituting the text data, but they are prepared in advance at the same time as the text data to be read out. The gradation data reading section 11 may be read.

In addition, in the present embodiment, a plurality of tone data for all the characters constituting the text data are transmitted to the receiving device, but this may also allow only a plurality of tone data for some character strings to be transmitted. For example, if the receiving side has basic font data corresponding to plural gradations, the transmitting side does not need to transmit the gradation data for this basic font, and the external characters or characters with special size are not prepared at the receiving side. It is only necessary to transmit gradation data relating to the data. Also in this case, the gradation data output unit 23c outputs the extracted gradation data regarding the external characters transmitted in the order of the text data.

In this case, the text data is transmitted, and the receiving side outputs the extracted grayscale data relating to the characters constituting the text in the order of the text data arrangement. It can be applied. That is, an identification symbol is attached to data such as an image or a logo, and information indicating an output order of an image or the like using the identification symbol is transmitted instead of text data, and the receiving side extracts an image or the like according to the information indicating this output order. The tone data may be output.

In addition, in the present embodiment, as described in the first and second embodiments, modification and application of the gray scale data conversion unit 28 to convert the extracted gray scale data are possible.

As described above, according to the present invention, it is possible to obtain an apparatus and a method capable of appropriately reproducing grayscale data without impairing the quality of the original data according to the capability of the receiving side.

Preferred embodiments of the present invention are disclosed for purposes of illustration, and those skilled in the art will be able to make various modifications, changes, substitutions and additions through the spirit and scope of the present invention as set forth in the appended claims.

Claims (74)

Gradation data reading means for reading plural gradation data having different gradation numbers relating to the same object, and data transmitting means for transmitting the plural read gradation data. 2. The data transmitting apparatus according to claim 1, further comprising: the same object data combining means for arranging one set for each same object before transmitting the read plurality of tone data. The data transmitting apparatus according to claim 2, wherein the same object data combining means organizes the gray data into one set by concatenating the gray data for the same object, and the connection arranges the data physically adjacently. The method of claim 2, And the same target data combining means organizes the grayscale data into one set by adding link information, which is information indicating that belonging to the group to be arranged, to the grayscale data relating to the same object. 3. The apparatus according to claim 2, further comprising text data reading means for reading text data, wherein said gradation data reading means makes each character constituting said text data the same object, and said data transmitting means reads. And a text data transmission device. Gradation data reading means for reading plural gradation data having different gradation numbers relating to the same object, and plural gradation data read out, and attribute information acquiring means for acquiring attribute information including information on the gradation number of gradation data. And transmission data output means for outputting the read plurality of gradation data and the acquired attribute information as transmission data. 7. The transmission data generating apparatus according to claim 6, further comprising attribute information adding means for adding attribute information corresponding to each of the read plurality of gradation data. 7. The transmission data generating device according to claim 6, further comprising list information generating means for generating a combination of the acquired attribute information as list information. Gradation data reading means for reading plural gradation data having different gradation numbers for the same object, the same target data combining means for organizing the plural read gradation data into one set for each same object, and gradation data arranged in one set And a transmission data output means for outputting as data. 10. The apparatus for generating data for transmission according to claim 9, wherein the same object data combining means organizes the gray data into one set by concatenating the gray data for the same object, and the connection arranges the data physically adjacent. 11. The transmission data generating device according to claim 10, wherein the same target data combining means connects the plurality of grayscale data in an order according to a predetermined criterion for the number of grayscale data of each grayscale data. 10. The data generation for transmission according to claim 9, wherein the same target data combining means organizes the grayscale data into one set by adding link information, which is information indicating that belonging to the set of the sets, to the tone data relating to the same object. Device. Text data reading means for reading text data, gradation data reading means for reading plural gradation data having different gradations for each character constituting the text data, and a plurality of read gradation data and text data as transmission data. And a transmission data output means for outputting to an external device. A data receiving apparatus for receiving and outputting a plurality of tone data having different numbers of tones related to the same object, comprising: extracting tone data selecting means for determining as tone data to be extracted from among the plurality of tone data according to the output object; And gradation data extracting means for extracting the determined extracted gradation data, and gradation data output means for outputting the extracted gradation data to the output target. 15. The gradation data selection means according to claim 14, wherein the extracted gradation data selecting means includes: optimum coefficient determining means for determining an optimal gradation number that can be processed by the output object, and a gradation for analyzing the gradation numbers of the plurality of gradation data. A data analysis means and extracting gray data determination means for retrieving gray data having the optimal gray number from among the plurality of gray data based on the analysis result by the gray data analyzing means and determining as extracted gray data. Characterized in that the data receiving device. 16. The gradation data analyzing means according to claim 15, wherein the gradation data analyzing means is based on the attribute information including information on the gradation number of the gradation data when the gradation data analysis means transmits the attribute information on the gradation number of each gradation data in addition to the plurality of gradation data. A data receiving apparatus, characterized by analyzing the number of gradations of a plurality of gradation data. 17. The gradation data analyzing means according to claim 16, wherein the gradation data analyzing means analyzes the gradation number of the gradation data based on the attribute information added for each of the received gradation data when the attribute information is added to each of the plurality of gradation data. Data receiving apparatus, characterized in that. 17. The data receiving apparatus according to claim 16, wherein the gradation data analyzing means analyzes the gradation number of the gradation data based on the list information when forming the list information combined with the attribute information. The method according to claim 14, wherein the gradation data extracting means extracts the gradation data based on the criterion when the plurality of gradation data are connected in an order according to a predetermined criterion for the number of gradations of each gradation data. And a data receiving device for physically arranging data adjacently. 16. The gradation data according to claim 15, wherein the extraction gradation data determining means has gradation number not exceeding the optimal gradation number among the received gradation data when the gradation data having the optimal gradation number does not exist among the received gradation data. And determining the data as the extracted gray scale data. 21. The gradation data determining unit according to claim 20, wherein the extraction gradation data determining unit extracts gradation data having the maximum gradation number not exceeding the optimal gradation number when there is no gradation data having the optimal gradation number among the received gradation data. A data receiving device, characterized in that determined as gradation data. 16. The gradation data determining unit according to claim 15, wherein the extraction gradation data determining means determines one gradation data as the extraction gradation data based on a predetermined criterion when there is no gradation data having the optimal gradation number among the received gradation data. And gradation data converting means for converting the gradation data extracted by the data extracting means into the optimum number of gradations, wherein the gradation data output means also outputs the converted gradation data. 23. The gradation data according to claim 22, wherein the extraction gradation data determining means extracts gradation data having a minimum gradation number exceeding the optimal gradation number when there is no gradation data having the optimal gradation number among received gradation data. A data receiving device, characterized in that determined as data. 15. The gradation data output means according to claim 14, wherein the gradation data output means outputs gradation data for each character according to the text data when the same object is each character constituting text data, and this text data is also transmitted. Data receiver. A data transmitting and receiving system comprising a transmitting apparatus and a receiving apparatus, wherein the transmitting apparatus includes gradation data reading means for reading a plurality of gradation data having different numbers of gradations for the same object, and data transmitting means for transmitting the read gradation data. The receiver comprises: gradation data receiving means for receiving the gradation data, gradation data output means for outputting gradation data as an output object, and an optimal gradation number that the output object can process. An gradation having the optimum gradation number among gradation data analysis means for determining the number of gradations, the gradation data analysis means for analyzing the gradation number of the plurality of gradation data, and the gradation data received based on the analysis result by the gradation data analysis means Extraction gradation data determination means for retrieving data and determining it as extraction gradation data And gradation data extracting means for extracting the determined extracted gradation data and sending it to the gradation data output means. A gradation data reading step of reading plural gradation data relating to the same object, and a gradation data transmission step of transmitting the read gradation data. 27. The data transmission method according to claim 26, further comprising the same object data combining step of organizing the read plurality of gradation data into one set for each same object. 28. The method of claim 27, wherein the step of combining the same object data organizes the gray level data into one set by concatenating the gray level data of the same object, and wherein the connection arranges the data physically adjacent to each other. 28. The data transmission method according to claim 27, wherein the step of combining the same object data comprises the gradation data grouped into one set by adding link information, which is information indicating that belonging to the group to be arranged, to the gradation data about the same object. 27. The text data reading step according to claim 26, wherein the text data reading step of reading text data and the gradation data reading step make each character constituting the text data the same object, and the text data read in the data transmitting step is also used. A data transmission method characterized by transmitting together. A gradation data reading step of reading plural gradation data having different gradation numbers relating to the same object, and an attribute information acquiring step of acquiring attribute information including information on the gradation number of the gradation data as related to the plural gradation data read out Wow, And a transmission data output step of outputting the read plurality of gradation data and the acquired attribute information as transmission data. 32. The transmission data generating method according to claim 31, further comprising an attribute information adding step of adding attribute information corresponding to each of the read plurality of gradation data. 32. The transmission data generating method according to claim 31, further comprising a list information generating step of combining the obtained attribute information into list information. A gradation data reading step of reading plural gradation data having different gradation numbers for the same object, the same target data combining step of arranging the plural read gradation data into one set for each same object, and the gradation data arranged in one set for transmission And a transmission data output step of outputting as data. 35. The method of claim 34, wherein the step of combining the same data comprises organizing the gray data into one set by concatenating the gray data about the same object, and the concatenating arranges the data physically adjacent to each other. . 36. The method of claim 35, wherein in the step of combining the same target data, the plurality of grayscale data is connected in an order according to a predetermined criterion for the number of grayscale data of each grayscale data. The data generation for transmission according to claim 34, wherein the step of combining the same object data is performed by adding link information, that is, information indicating that belonging to the group to be sorted, to the tone data relating to the same object to sort the gray level data into one set. Way. A text data reading step of reading text data, a gradation data reading step of reading plural gradation data having different gradations for each character constituting the text data, and a plurality of read gradation data and text data as transmission data And a transmission data output step of outputting the transmission data. A data receiving method for receiving a plurality of tone data having different numbers of tones related to the same object and outputting them to an output object, wherein the extracted tone data determining the tone data to be extracted from among the plurality of tone data according to the output object as extracted tone data And a selection step, a gradation data extraction step of extracting the determined extraction gradation data, and a gradation data output step of outputting the extracted extraction gradation data as an output target. 40. The method according to claim 39, wherein the step of selecting the extracted gradation data comprises: determining an optimal gradation number for determining an optimal gradation number that can be processed by the output object as an optimal gradation number, and analyzing gradation numbers of the plurality of gradation data. A gray scale data analyzing step and an extracted gray scale data determining step of searching for gray scale data having the optimal gray scale number among the plurality of gray scale data and determining the extracted gray scale data as the extracted gray scale data based on the analysis result in the gray scale data analyzing step; Data receiving method, characterized in that. 41. The method according to claim 40, wherein, in the gradation data analyzing step, when attribute information regarding the number of gray levels of each gray data is transmitted in addition to the plurality of gray scale data, A data receiving method characterized by analyzing the number of gray levels of a plurality of gray levels data. 42. The gradation data analyzing step according to claim 41, wherein in the gradation data analyzing step, when the attribute information is added to each of the plurality of gradation data, the gradation number of the gradation data is analyzed based on the attribute information added to each of the received gradation data. Data receiving method, characterized in that. 42. The data receiving method according to claim 41, wherein in the gradation data analyzing step, when the list information combined with the attribute information is formed, the gradation number of the gradation data is analyzed based on the list information. 40. The method of claim 39, wherein in the extracting of the grayscale data, grayscale data is extracted based on the criterion when the plurality of grayscale data are connected in an order according to a predetermined reference regarding the number of grayscale data of each grayscale data. How to receive data. 41. The method according to claim 40, wherein in the extracting data determining step, when there is no grayscale data having the optimum grayscale number in the received grayscale data, grayscale data having a grayscale number not exceeding the optimal grayscale number is extracted. The data receiving method, characterized in that determined as. 46. The method of claim 45, wherein in the extracting data determining step, when there is no grayscale data having the optimal number of grayscale data in the received grayscale data, the grayscale data having the maximum grayscale number not exceeding the optimal grayscale number is extracted. A data receiving method, characterized in that determined as data. 41. The method according to claim 40, wherein in the extracting grayscale data determining step, when there is no grayscale data having the optimum grayscale number in the received grayscale data, one grayscale data is determined as the extracted grayscale data based on a predetermined criterion. And a gradation data conversion step of converting the gradation data acquired in the gradation data extraction step into the optimum gradation number, and outputting the converted gradation data in the gradation data output step. 48. The method according to claim 47, wherein in the extracting grayscale data determining step, when grayscale data having the optimum grayscale number does not exist among the received grayscale data, grayscale data having a minimum grayscale number exceeding the optimal grayscale number is extracted. A data receiving method, characterized in that determined as gradation data. 40. The method according to claim 39, wherein in the gradation data output step, when the same object is each character constituting text data, and the text data is also transmitted, gradation data for each character is output according to the text data. How to receive data. In the data transmission / reception method comprising a data transmission process and a data reception process, the gradation data transmission step includes a plural gradation data reading step of reading plural gradation data relating to the same object, and a gradation data transmission for transmitting the read gradation data. And a step of receiving a gray level data for receiving the gray level data, a step for determining an optimal number of gray levels for determining an optimal number of gray levels for output as an optimum number of gray levels, and the plurality of gray level data. An gradation data determination step of retrieving gradation data having the optimum gradation number from among gradation data received based on the analysis result in the gradation data analysis step and determining as extracted gradation data And a gray level for extracting the determined extracted gray level data. Data transmission and reception method comprising: a tone data output step of outputting the data extracting step and the extracted gray-scale data extraction. In a computer-readable recording medium having recorded thereon a program for causing a computer to execute a data transmission method, the data transmission method includes a plurality of gradation data reading steps of reading a plurality of gradation data relating to the same object, and the read gradation data. And a gradation data transmission step of transmitting the gradation data. 51. The recording medium of claim 50, wherein the data transmission method further comprises the same object data combining step of arranging the plurality of read gray level data into one set for the same object. 53. The recording medium of claim 52, wherein the combining of the same object data organizes the gray data into one set by concatenating gray data of the same object, and the concatenating arranges the data physically adjacently. The recording medium according to claim 52, wherein the step of combining the same object data comprises organizing the grayscale data into one set by adding link information, which is information indicating that belonging to the group to be arranged, to the grayscale data relating to the same object. 52. The text according to claim 51, further comprising a text data reading step of reading text data, wherein each character constituting the text data in the gradation data reading step is the same object, and the text read in the data sending step And a recording medium for transmitting data together. A recording medium that can be read by a computer that has recorded a program for causing a computer to execute a transmission data generation method, wherein the transmission data generation method includes: a gradation data reading step of reading a plurality of gradation data having different gradations for the same object; And an attribute information acquiring step for acquiring attribute information including information on the number of gradations of the gradation data, and outputting the plural read gradation data and acquired attribute information as transmission data. And a transmission data output step. 57. The recording medium of claim 56, wherein the method for generating data for transmission further comprises an attribute information adding step of adding attribute information corresponding to each of the read plurality of gradation data. 59. The recording medium of claim 56, wherein the method for generating data for transmission further comprises a list information generating step of combining the acquired attribute information into list information. A recording medium having a program for causing a computer to execute a transmission data generation method, the transmission data generation method comprising: a gradation data reading step of reading a plurality of gradation data having different numbers of gradations for the same object, and a plurality of read plural And a transmission data output step of outputting the gradation data arranged in one set as the data for transmission, and the same target data combining step of arranging the gradation data into one set for each same object. 60. The recording medium of claim 59, wherein the step of combining the same object data organizes the gray level data into one set by concatenating the gray level data of the same object, and the linking arranges the data physically adjacently. 61. The recording medium of claim 60, wherein the combining of the same target data comprises connecting the plurality of grayscale data in an order according to a predetermined criterion for the number of grayscale data of each grayscale data. 60. The recording medium according to claim 59, wherein the step of combining the same object data comprises organizing the grayscale data into one set by adding link information, which is information indicating that belonging to the group to be arranged, to the grayscale data relating to the same object. In a computer-readable recording medium having recorded thereon a program for causing a computer to execute a data generation method for transmission, the transmission data generation method includes a text data reading step of reading text data, and each character constituting the text data. And a gradation data reading step of reading plural gradation data having different gradations in relation to the gradation number, and a transmitting data output step of outputting the plural gradation data and text data read out as transmission data. A computer-readable recording medium having a program for causing a computer to execute a data receiving method for receiving and outputting a plurality of tone data having different numbers of tones related to the same object to an output object, wherein the data receiving method includes: Extracting gradation data selection step of determining gradation data to be extracted from the plurality of gradation data as extraction gradation data, gradation data extraction step of extracting the determined extraction gradation data, and outputting the extracted gradation data as output targets And a gradation data output step. 65. The method according to claim 64, wherein the extracting gray level data selection step comprises: determining an optimal gray level number that determines an optimal gray number that can be processed by the output object as an optimal gray number, and analyzing the gray level number of the plurality of gray data; A gray scale data analyzing step and an extracted gray scale data determining step of searching for gray scale data having the optimal gray scale number among the plurality of gray scale data based on the analysis result in the gray scale data analyzing step and determining the extracted gray scale data as extracted gray scale data; Characterized in that the recording medium. 66. The method according to claim 65, wherein in the gradation data analyzing step, when attribute information regarding the number of gradations of each gradation data is transmitted in addition to the plurality of gradation data, based on the attribute information including information about the gradation number of the gradation data. And a tone number of the plurality of tone data. 67. The gradation data analysis step according to claim 66, wherein in the gradation data analyzing step, when the attribute information is added to each of the plurality of gradation data, the gradation number of the gradation data is analyzed based on the attribute information added to each of the received gradation data. The recording medium, characterized in that. 67. The recording medium of claim 66, wherein in the gradation data analyzing step, when the list information combined with the attribute information is formed, the gradation number of the gradation data is analyzed based on the list information. 65. The method of claim 64, wherein in the extracting of the grayscale data, grayscale data is extracted based on the criterion when the plurality of grayscale data are connected in an order based on a predetermined criterion for the number of grayscale data of each grayscale data. Record carrier. 68. The gray level data according to claim 65, wherein in the extracting data determining step, when there is no gray level data having the optimal number of gray levels among the received gray level data, the gray level data having the number of gray levels not exceeding the optimal number of gray levels is extracted. The recording medium, characterized in that determined as. The method of claim 70, wherein in the extracting data determining step, when the grayscale data having the optimum grayscale number does not exist among the received grayscale data, grayscale data having the maximum grayscale number not exceeding the optimal grayscale number is extracted. A recording medium, characterized in that determined as gradation data. 66. The method according to claim 65, wherein in the extracting gray scale data determining step, when there is no gray scale data having the optimum gray scale number among the received gray scale data, one gray scale data is determined as the extracted gray scale data based on a predetermined criterion. , The data receiving method, And a gradation data conversion step of converting the gradation data acquired in the gradation data extraction step into the optimal number of gradations, and outputting the converted gradation data in the gradation data output step. 73. The gradation data according to claim 72, wherein in the extracting gradation data determining step, when gradation data having the optimal gradation number does not exist in the received gradation data, the gradation data having the minimum gradation number exceeding the optimal gradation number is extracted. A recording medium, characterized in that determined as data. The gradation data outputting step according to claim 64, wherein in the gradation data outputting step, when the same object is each character constituting text data, and the text data is also transmitted, gradation data for each character is output according to the text data. Record carrier.