JP3539484B2 - Data processing method and apparatus, information storage medium - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention provides a data processing method and apparatus for data management of a plurality of management targets to which a plurality of types of numerical data are respectively assigned, and information in which a program for causing a computer to execute various processing operations is stored as software. And a storage medium.
[0002]
[Prior art]
At present, data management of various kinds of information as digital data is performed by a data processing device such as a personal computer. For example, there is a data processing device that manages geographic data.
[0003]
In the geographic data managed by the data processing apparatus in this manner, a two-dimensional area corresponding to a map is divided into a matrix to be a large number of geographic blocks to be managed, and each of these geographic blocks has its elevation. The value and the terrain attribute are given as numerical data.
[0004]
The terrain attribute is an identification number corresponding to a classification such as “landfill, seawater,...”, And the Geographical Survey Institute of Japan defines 16 types of “0 to 15”. The altitude value is a numerical value expressing the altitude in meters, and in the case of Japan, it is in the range of “0 to 3776”.
[0005]
[Problems to be solved by the invention]
As described above, all of the 16 types of terrain attributes can be expressed by one byte, and the altitude values of “0 to 3776” can be entirely expressed by one byte. The data of the altitude value of byte and the terrain attribute of 1 byte are managed for each geographic block.
[0006]
However, when 2-byte numerical data is given to each of a huge number of geographic blocks as described above, an information storage medium having an excessively large capacity is required for storing the data, and processing for data writing, data reading, and data transfer is required. Since the burden is excessive, data management becomes difficult.
[0007]
The present invention has been made in view of the above-described problems, and has a data processing method and apparatus capable of easily managing a plurality of management targets to which a plurality of types of numerical data are respectively assigned, and a data processing method of the present invention. It is an object of the present invention to provide at least one of an information storage medium in which a program for causing a computer to execute the processing operation is stored as software.
[0008]
[Means for Solving the Problems]
The data processing device of the present invention is a data processing device that performs data management of a plurality of management targets to which a plurality of types of numerical data are respectively given,
Bit detection means for detecting the minimum number of bits in which all of the numerical data are represented for each type, and bit summing means for summing the number of bits of the plurality of types of numerical data detected by the bit detection means, A unit converting means for converting the number of bits totaled by the bit totaling means into a number of bytes, and a plurality of types of numerical data for each of the management objects with the number of bytes converted by the unit converting means as one management data Format generating means for generating a data format.
[0009]
Therefore, in the data processing method by the data processing device of the present invention, the bit detection means detects the minimum number of bits representing all of the numerical data for each type, and determines the number of bits of the detected plural types of numerical data. The bit summing means sums. The unit converting means converts the total number of bits into the number of bytes, and the format generating means generates a data format in which a plurality of types of numerical data for each management target are set as one management data with the converted number of bytes. .
[0010]
Here, a data processing method by the data processing device of the present invention will be specifically described below with reference to FIG. First, assuming that a plurality of types of numerical data “M, N” are given to one management target, the first numerical data M of all the management targets can be expressed as shown in FIG. The minimum number of bits is M _{bit_min} (bit), the minimum number of bytes is M _{byte_min} (byte).
[0011]
The difference between the number of bytes and the number of bits is represented by the number of bits M _delta (bit)
8 × M _{byte_min} -M _{bit_min} = M _delta (bit)
This bit number M _delta (bit) is the number of bits not used when the numerical data M is expressed in byte units.
[0012]
Similarly, as shown in FIG. 2B, the second numerical data N also has the minimum number of bits N _{bit_min} (bit) and the minimum number of bytes N _{byte_min} (byte) and
8 × N _{byte_min} -N _{bit_min} = N _delta (bit)
The number of bits N that are not used when the numerical data N is expressed in byte units as _delta (bit) is calculated.
[0013]
When a plurality of types of numerical data "M, N" are individually represented by bytes for each management target, the total number of bytes is at least "M" as shown in FIG. _{byte_min} (byte) + N _{byte_min} (byte) ”. However, the total number of unused bits“ M, N ”of a plurality of types of numerical data“ M, N ”is“ M ”. _delta (bit) + N _delta (bit) ”is 1 byte or more, as shown in FIG. 3D, if multiple types of numerical data“ M, N ”are combined into one and expressed in byte units, unused 1 byte It can be omitted.
[0014]
Therefore, in the data processing method by the data processing device of the present invention, as described above, the minimum number of bits expressing all of the numerical data for each type is summed, and then converted into the number of bytes. By using a plurality of types of numerical data for each as one management data, a data format in which unused bytes are reduced is generated.
[0015]
As another form of the data processing device as described above, data for converting a plurality of types of numerical data into one management data for each of a plurality of management targets in a data format generated by the format generation unit is provided. It is also possible to include a conversion unit and a data storage unit for storing the management data converted into one data by the data conversion unit for each of the plurality of management targets.
[0016]
In this case, the data conversion unit converts the plurality of types of numerical data into one management data for each of a plurality of management targets in the data format generated by the format generation unit, and converts the converted management data into one. Since the data storage unit stores data for each of a plurality of management targets, a plurality of types of numerical data are stored for each of the management targets as management data in a data format in which unused bytes are reduced.
[0017]
As another form of the data processing device as described above, the data storage unit may convert the binary management data including a plurality of bits into a decimal number and then store the data. In this case, since the data storage means converts the binary management data composed of a plurality of bits into a decimal number and stores the data, the management data generated in the binary number is stored in a general decimal number. .
[0018]
In another form of the data processing apparatus as described above, the format generation unit can generate a data format in which bit strings of a plurality of types of numerical data are arranged in a predetermined order. In this case, since the format generating means generates the data format, in this data format, bit strings of a plurality of types of numerical data assigned to one management target are arranged in a predetermined order in a row.
[0019]
As another form of the data processing apparatus as described above, the data conversion means can arrange a plurality of types of bit strings of the numerical data in a predetermined order in a row in accordance with the data format. In this case, since the data conversion means arranges the bit strings of the plurality of types of numerical data in a predetermined order corresponding to the data format, the plurality of types of numerical data are converted into one management data.
[0020]
As another form of the data processing device as described above, the data conversion unit may include a bit shift unit that sequentially shifts a plurality of types of bit strings of the numerical data in accordance with the data format, Bit adding means for adding a plurality of types of shifted bit strings of the numerical data may be provided.
[0021]
In this case, the bit sequence of the plurality of types of numerical data is sequentially shifted according to the data format by the bit shift means, and the bit sequence of the plurality of types of numerical data thus shifted is added by the bit addition means. Is converted into one management data.
[0022]
Various means referred to in the present invention may be formed so as to realize their functions. For example, dedicated hardware for generating a predetermined function, a computer to which a predetermined function is provided by a program, or a program A predetermined function realized inside the computer, a combination thereof, and the like are permitted.
[0023]
The information storage medium of the present invention is an information storage medium that stores computer-readable software that manages a plurality of management targets to which a plurality of types of numerical data are respectively assigned,
Detecting the minimum number of bits in which the entirety of the numerical data is expressed for each type, summing up the detected bit numbers of the plurality of types of numerical data, and converting the total number of bits into the number of bytes Converting, generating a data format in which a plurality of types of the numerical data for each of the management targets is set to one management data with the converted number of bytes,
Is stored in the computer.
[0024]
Therefore, when the computer reads the program stored in the information storage medium of the present invention and executes the corresponding processing operation, the computer detects the minimum number of bits representing all of the numerical data for each type. Then, the number of bits of the detected plural types of numerical data is summed. This total number of bits is converted to bytes, and the converted bytes are used to generate a data format that uses multiple types of numerical data for each management target as one management data, reducing unused bytes. The generated data format is generated.
[0025]
As another form of the information storage medium as described above, a plurality of types of numerical data are converted into one management data for each of a plurality of management targets in the data format in which data is generated. It is also possible to store a program for causing the computer to store the management data converted into the data for each of the plurality of management targets.
[0026]
In this case, the computer that executes the corresponding processing operation by reading the program stored in the information storage medium converts the plurality of types of numerical data into a single management data for each of the plurality of management targets in a data generated data format. After conversion, the management data that has been converted into one is stored for each of a plurality of management targets, so several types of numerical data are managed for each management target as management data in a data format with several unused bytes reduced. Data is saved.
[0027]
The information storage medium referred to in the present invention may be hardware in which a program for causing a computer to execute various operations is stored in advance as software, and is, for example, fixed to an apparatus including the computer as a part. ROM (Read Only Memory), HDD (Hard Disc Drive), CD (Compact Disc) -ROM, FD (Floppy Disc), etc., which are removably mounted on a device that includes a computer.
[0028]
The computer in the present invention may be any device that can read a program made of software and execute a corresponding processing operation. For example, the computer mainly includes a CPU (Central Processing Unit), and a ROM or a RAM (Random Access Unit). A device to which various devices such as a Memory) and an I / F (Interface) are connected as necessary is allowed.
[0029]
Note that causing the computer to execute various operations corresponding to software in the present invention also allows the computer to control operations of various devices. For example, storing various types of data in a computer involves storing various types of data in an information storage medium such as a RAM to which the computer is connected in advance, or storing various types of data in an internal memory provided as a part of the computer. , And when the information storage medium of the present invention is an FD or the like, a computer stores various data therein.
[0030]
BEST MODE FOR CARRYING OUT THE INVENTION
One embodiment of the present invention will be described below with reference to FIGS. 2 is a schematic diagram showing a logical structure of the data processing apparatus according to the present embodiment, FIG. 3 is a block diagram showing a physical structure, FIG. 4 is a schematic plan view showing a data structure of geographic data, and FIG. FIG. 6 is a schematic plan view showing four geographic blocks to be managed as a part of geographic data, FIG. 6 is a schematic diagram showing a relationship between four geographic blocks and elevation values, which are plural types of numerical data, and terrain attributes, 7 is a schematic diagram showing a procedure for converting the elevation value and the terrain attribute of one geographic block into one management data, FIG. 8 is a schematic diagram showing a data configuration of the management data, and FIG. 9 is a data diagram of the present embodiment. FIG. 10 is a flowchart showing the first half of the processing method, FIG. 10 is a flowchart showing the second half, and FIG. 11 is a schematic diagram showing the relationship between four geographic blocks and management data.
[0031]
The data processing apparatus 100 according to the present embodiment includes a computer system generally called a personal computer, a workstation, or the like, and includes a CPU 101 as main hardware of the computer as shown in FIG.
[0032]
A bus line 102 is connected to the CPU 101. The bus line 102 includes a ROM 103, a RAM 104, an HDD 105, an FDD (FD Drive) 107 in which an FD 106 is loaded, a CD drive 109 in which a CD-ROM 108 is loaded, and a keyboard. 110, a mouse 111, a display 112, a communication I / F 113, and other hardware are connected.
[0033]
In the data processing apparatus 100 according to the present embodiment, hardware such as the ROM 103, the RAM 104, the HDD 105, the FD 106, and the CD-ROM 108 correspond to an information storage medium, and at least one of them includes a control program and various data necessary for various operations. Data is stored as software.
[0034]
For example, a control program that causes the CPU 101 to execute various processing operations is stored in the FD 106 or the CD-ROM 108 in advance. Such software is installed in the HDD 105 in advance, and is copied to the RAM 104 and read by the CPU 101 when the data processing apparatus 100 is started.
[0035]
As described above, the CPU 101 reads an appropriate program and executes various processing operations, so that the data processing device 100 according to the present embodiment has the data input unit 10, the bit detection unit 11, Various units such as a bit sum unit 12, a unit conversion unit 13, a format generation unit 14, a data conversion unit 15, and a data storage unit 16 are logically realized as various functions.
[0036]
The data input unit 10 corresponds to, for example, a function in which the CPU 101 that operates by reading a control program stored in the RAM 104 or the like recognizes data input by the keyboard 110 or the communication I / F 113 or data read by the FDD 107. 200 external inputs are accepted.
[0037]
As shown in FIGS. 4 and 5, the geographic data 200 includes a large number of geographic blocks 201 to be managed, and an altitude value and a terrain attribute are assigned to each of the geographic blocks 201 as numerical data. . In the present embodiment, since the geographical data 200 of Japan is targeted, the terrain attribute is composed of one of “0 to 15” expressed in decimal, and the elevation value is “0 to 3776” expressed in decimal. ".
[0038]
The bit detecting means 11 corresponds to a function of causing the CPU 101 to execute a predetermined processing operation in accordance with a control program stored in the RAM 104 or the like. The minimum number of bits representing the whole is detected.
[0039]
As described above, in the geographical data 200 of Japan, since the terrain attributes are all "0 to 15", the minimum number of bits that can represent all of them is "4". Similarly, since the altitude values are all “0 to 3776”, the minimum number of bits that can express all of them is “12”.
[0040]
Similarly, the various means correspond to the function of the CPU 101 executing a predetermined processing operation in accordance with the control program stored in the RAM 104 or the like, and the bit summing means 12 calculates the elevation value detected by the bit detecting means 11. Then, the unit conversion means 13 converts the number of bits summed up by the bit summing means 12 into the number of bytes.
[0041]
In the data processing device 100 according to the present embodiment, as described above, since the number of bits of the terrain attribute of the geographic data 200 in Japan is “4” and the number of bits of the elevation value is “12”, the total of these bits is “ 16 ", which is exactly converted to 1 byte.
[0042]
As shown in FIG. 8, the format generation unit 14 divides the bit string of the elevation value and the terrain attribute into a single row in a predetermined order as a data format in which the elevation value and the terrain attribute of each geographic block 201 are set as one management data. The data format to be arranged is generated with the number of bytes converted by the unit conversion means 13.
[0043]
The data conversion means 15 stores the data format generated by the format generation means 14 in data, and arranges the bit strings of the elevation value and the terrain attribute in a predetermined order in a row in accordance with the data format, thereby providing geographical information. One management data is generated for each block 201.
[0044]
More specifically, the data conversion unit 15 includes a bit shift unit 20 and a bit addition unit 21. The bit shift unit 20 sequentially converts the bit sequence of the elevation value and the terrain attribute according to the data format. , And the bit addition means 21 adds the bit sequence of the elevation value and the terrain attribute shifted by the bit shift means 20.
[0045]
As described above, in the geographical data 200 of Japan, since the number of bits of the terrain attribute is “4” and the number of bits of the elevation value is “12”, as shown in FIG. The 4-bit data area of the terrain attribute is shifted by 12 bits of the data area of the elevation value to 1 byte. On the other hand, 4-bit “0” is added to the head of the 12-bit altitude value to make it 1 byte, and a bit string of these altitude value and terrain attribute is added to generate 1-byte management data. .
[0046]
The data storage means 16 corresponds to a storage area constructed in the HDD 105 or the like so that the CPU 101 can recognize the control program corresponding to the control program stored in the RAM 104 or the like. Data is stored for each of a plurality of geographic blocks 201.
[0047]
However, the data storage unit 16 converts the binary management data composed of a plurality of bits into a decimal number which is a general data format as shown in FIG. 11, and stores the data. The term "decimal number" used here may be, for example, a form in which only a part of a hexadecimal number code generally used in a computer is used.
[0048]
The various means as described above are realized by using hardware such as the keyboard 110 and the display 112 as necessary, and the main body thereof corresponds to software stored in an information storage medium such as the RAM 104, and a computer hardware. This is realized by the function of the CPU 101, which is hardware.
[0049]
Such software, for example, accepts data input of geographic data composed of a plurality of geographic blocks 201 to which altitude values and terrain attributes are respectively assigned. , The sum of the detected altitude value and the terrain attribute, and the conversion of the total number of bits to the number of bytes. A data format in which the elevation value and the terrain attribute of each of the geographical attributes are set as one management data, and the elevation value and the terrain attribute of each of the plurality of geographic blocks 201 are combined into one management data in the generated data format. Data conversion, and storing of the converted management data for each of a plurality of geographic blocks 201 Stored in the information storage medium RAM104 such as a control program for executing the processing operations equal to CPU101 like.
[0050]
In the above-described configuration, when the geographic data including the plurality of geographic blocks 201 to which the elevation values and the terrain attributes are respectively given is externally input, the data processing apparatus 100 according to the present embodiment outputs the plurality of geographic data. Elevation values and terrain attributes can be data managed for each block 201.
[0051]
In this case, as shown in FIG. 9, when geographic data is input externally (step S1), the elevation values and terrain attributes, which are numerical data, are read out in each of the plurality of geographic blocks 201 to be managed. , The minimum number of bits representing all of the elevation values and the minimum number of bits representing all of the terrain attributes are detected (step S2).
[0052]
Next, the number of bits of the terrain attribute and the value of the altitude are summed (step S3), and this is added to the number of bytes (step S4). As described above, in the Japanese geographic data 200, the terrain attribute consisting of "0 to 15" can be represented by 4 bits, and the elevation value consisting of "0 to 3776" can be represented by 12 bits. Is converted to 1 byte.
[0053]
Therefore, as a data format in which the elevation value and the terrain attribute are one management data for each geographic block 201, a 1-byte data format in which bit strings of the elevation value and the terrain attribute are sequentially arranged in a line is generated and set. (Step S5).
[0054]
When the data format corresponding to the geographic data 200 to be managed is generated and set as described above, the data processing device 100 of the present embodiment converts the geographic data 200 according to the data format as shown in FIG. The data can be managed.
[0055]
Therefore, when the geographic data 200 is externally input in a state where the data format is set (steps T1 and T2), the elevation value and the terrain attribute, which are numerical data, are changed in each of the geographic blocks 201 to be managed. The data is read, and as shown in FIG. 7, the 4-bit bit string of the terrain attribute is shifted by the altitude value of 12 bits according to the data format (step T3).
[0056]
As a result, a 1-bit bit string in which the topographical attribute data is set in the first 4 bits is generated, so that a 4-bit “0” is added to the top of the 12-bit altitude value to be 1 byte. The bit string of the altitude value and the terrain attribute is added to generate 1-byte management data (step T4).
[0057]
When one-byte management data is generated for each geographic block 201 in this manner, as shown in FIG. 11, the binary management data composed of a plurality of bits is converted into a decimal number which is a general data format. Then, data is stored in a predetermined storage area of the HDD 105 (step T6).
[0058]
In the data processing device 100 of the present embodiment, the elevation value and the terrain attribute of the geographic data can be managed for each of the plurality of geographic blocks 201 as described above. Convert to byte management data. Therefore, the storage capacity can be halved compared to the case where the altitude value and the terrain attribute are individually managed by one byte, and the processing load such as data writing, data reading, and data transfer is greatly increased. Can be reduced.
[0059]
In particular, in the data processing device 100 of the present embodiment, since the geographical data of Japan is to be managed, the terrain attribute of “0 to 15” and the elevation value of “0 to 3776” are completely overwritten. Data can be converted to 1-byte management data without shortage.
[0060]
Moreover, in the data processing apparatus 100 of the present embodiment, the generated management data is converted into a general decimal number and then stored, so that the management data can be easily handled in the same manner as a general data file. . When reading the elevation values and terrain attributes stored in the data, it is a matter of course that the data processing opposite to the above-described data conversion is performed to convert a single piece of management data into a decimal terrain consisting of one of "0 to 15". The attribute and the decimal elevation value consisting of one of the range of "0 to 3776" are decoded.
[0061]
The present invention is not limited to the above-described embodiment, and allows various modifications without departing from the gist of the invention. For example, in the above-described embodiment, the management target is a geographical block of Japanese geographic data to which a terrain attribute and an elevation value are assigned, but the present invention provides various types of numerical data to which a plurality of types of numerical data are respectively assigned. Applicable to management of data to be managed.
[0062]
In the above embodiment, the geographical block of the Japanese geographic data is managed, and the terrain attribute and the elevation value can be completely converted into 1-byte management data without excess or deficiency. The apparatus 100 can also manage the geographic data of the world.
[0063]
However, in the geographical data of the world, since the range of the elevation value increases, the minimum number of bits that can represent the elevation value is “14” as shown in FIG. For this reason, if management data in byte units is generated so as to completely cover both the elevation value and the terrain attribute in the geographic data of the world, this becomes 2 bytes and the data capacity cannot be reduced. In such a case, for example, if the importance of the terrain attribute is low, the minimum number of bits that can be represented by reducing the classification to four is “2”, and the terrain attribute and the elevation value are stored in 1-byte management data. It is preferable to convert.
[0064]
Further, in the above-described embodiment, an example has been described in which various units are logically realized as various functions of the data processing device 100 by the CPU 101 operating according to a control program stored as software in the RAM 104 or the like. However, it is also possible to form each of these various means as unique hardware, and it is also possible to store a part of the various means as software in the RAM 104 or the like and form a part as hardware.
[0065]
Also, in the above embodiment, it is assumed that software pre-installed in the HDD 105 from the CD-ROM 108 or the like is copied to the RAM 104 when the computer system 2 is started, and the software stored in the RAM 104 is read by the CPU 101 as described above. Such software can be used by the CPU 101 while being stored in the HDD 105, or can be fixedly stored in the ROM 103 in advance.
[0066]
Further, it is possible to store software in the FD 106 or the CD-ROM 108 which is an information storage medium that can be handled alone, and install the software in the HDD 105 or the RAM 104 from the FD 106 or the like. Alternatively, the CPU 101 can directly read the software from the FD 106 or the like and execute the processing operation.
[0067]
That is, when the various units of the data processing apparatus 100 of the present invention are implemented by software, the software only needs to be in a state where the CPU 101 can read and execute the corresponding operation. It is also possible to form a control program for realizing the various means as described above by a combination of a plurality of software. In this case, the information storage medium which is a single product has the data processing device 100 of the present invention. It is sufficient to store only the minimum necessary software for realizing the above.
[0068]
For example, in a case where application software is provided to a computer system 2 on which an existing operating system is mounted by using an information storage medium such as a CD-ROM 108, software that implements various units of the data processing device 100 of the present invention includes: Since the software is realized by a combination of the application software and the operating system, the software depending on the operating system can be omitted from the application software of the information storage medium.
[0069]
In addition, the method of supplying the software described on the information storage medium to the CPU 101 is not limited to loading the information storage medium directly into the computer system 2. For example, it is also possible to store the software as described above in an information storage medium of a host computer, connect the host computer to a terminal computer via a communication network, and supply the software from the host computer to the terminal computer by data communication. is there.
[0070]
In the case described above, the terminal computer can execute a stand-alone processing operation in a state where the software has been downloaded to its own information storage medium, but can perform real-time data communication with the host computer without downloading the software. It is also possible to perform processing operations. In this case, the entire system in which the host computer and the terminal computer are connected by a communication network corresponds to the data processing device 100 of the present invention.
[0071]
【The invention's effect】
In the data processing method by the data processing apparatus according to the present invention, the bit detecting means detects the minimum number of bits representing all of the numerical data for each type, and sums the detected bit numbers of the plurality of types of numerical data to the bit total. Means are summed up, unit conversion means converts the total number of bits into bytes, and generates a data format using the converted bytes as a plurality of types of numerical data for each management target as one management data. By means of generating data,
Since the data format of the management data in which unused bytes are reduced can be generated, it is possible to provide a data format that minimizes the data capacity.
[0072]
In another form of the data processing device as described above, the data conversion unit converts a plurality of types of numerical data into one management data for each of a plurality of management targets in a data format generated by the format generation unit. Then, the data storage means stores the management data converted into one data for each of a plurality of management targets,
Since multiple types of numerical data can be stored for each management target as management data in a data format in which unused bytes are reduced, multiple types of numerical data can be stored with the minimum number of bytes. .
[0073]
In addition, the data storage means converts the binary management data composed of a plurality of bits into a decimal number and then stores the data.
Since the management data generated in a binary number can be stored in a general decimal number, the stored management data can be easily handled like a general data file.
[0074]
In addition, according to the data format generated by the format generation unit, the data conversion unit arranges the bit strings of the plurality of types of numerical data in a line in a predetermined order,
One management data in which unused bytes are reduced from a plurality of types of numerical data is easily and reliably generated.
[0075]
Further, the bit shift means sequentially shifts the bit strings of the plurality of types of numerical data in accordance with the data format, and the bit adding means adds the shifted bit strings of the plurality of types of numerical data,
One management data in which several unused bytes are reduced from a bit string of a plurality of types of numerical data is easily and reliably generated.
[0076]
When the computer reads the program stored in the information storage medium of the present invention and executes the corresponding processing operation, the computer detects the minimum number of bits representing all of the numerical data for each type, The number of bits of the detected plurality of types of numerical data are summed, the total number of bits is converted into bytes, and the converted number of bytes is used to convert the plurality of types of numerical data for each management target into one management data. By generating the data format that
Since the data format of the management data in which unused bytes are reduced can be generated, it is possible to provide a data format that minimizes the data capacity.
[0077]
In addition, a computer that reads a program stored in another form of the information storage medium as described above and executes a corresponding processing operation includes a plurality of types of numerical data for a plurality of management targets in a data generated data format. Is converted into one management data, and the management data converted into one is stored for each of a plurality of management targets.
Since multiple types of numerical data can be stored for each management target as management data in a data format in which unused bytes are reduced, multiple types of numerical data can be stored with the minimum number of bytes. .
[Brief description of the drawings]
FIG. 1 is a schematic diagram showing a basic principle of a data processing method by a data processing device of the present invention.
FIG. 2 is a schematic diagram illustrating a logical structure of the data processing device according to the present embodiment.
FIG. 3 is a block diagram showing a physical structure.
FIG. 4 is a schematic plan view showing a data structure of geographic data.
FIG. 5 is a schematic plan view showing four managed geographic blocks as part of geographic data.
FIG. 6 is a schematic diagram illustrating a relationship between four geographic blocks, elevation values as plural types of numerical data, and terrain attributes.
FIG. 7 is a schematic diagram showing a procedure for converting an elevation value and a terrain attribute of one geographic block into one management data.
FIG. 8 is a schematic diagram illustrating a data configuration of management data.
FIG. 9 is a flowchart showing the first half of the data processing method according to the embodiment.
FIG. 10 is a flowchart showing a second half part.
FIG. 11 is a schematic diagram illustrating a relationship between four geographic blocks and management data.
FIG. 12 is a schematic diagram illustrating a data configuration of management data according to a modified example.
[Explanation of symbols]
11-bit detection means
12-bit summation means
13 Unit conversion means
14 Format generation means
15 Data conversion means
16 Data storage means
20 bit shift means
21-bit addition means
100 Data processing device
101 CPU that is the main body of computer
103 ROM as Information Storage Medium
104 RAM as Information Storage Medium
105 HDD as Information Storage Medium
106 FD which is an information storage medium
108 CD-ROM as an information storage medium

Claims (10)

A data processing method for data management of a plurality of management targets to which a plurality of types of numerical data are respectively given,
Detecting the minimum number of bits in which all of the numerical data are represented for each type,
Summing up the number of bits of the detected plural types of numerical data,
Convert the total number of bits to the number of bytes,
A data processing method in which a data format in which a plurality of types of numerical data for each of the management targets are set as one management data is generated based on the converted number of bytes. Data conversion of a plurality of types of numerical data into one of the management data for each of the plurality of management objects in the data format data generated,
2. The data processing method according to claim 1, wherein the management data converted into one is stored for each of the plurality of management targets. A data processing device for data management of a plurality of management targets to which a plurality of types of numerical data are respectively given,
Bit detection means for detecting the minimum number of bits in which all of the numerical data are represented for each type,
Bit summing means for summing the number of bits of the plurality of types of numerical data detected by the bit detecting means,
Unit conversion means for converting the number of bits totaled by the bit summing means into a number of bytes;
Format generating means for generating a data format in which a plurality of types of numerical data for each of the management targets are set as one management data with the number of bytes converted by the unit conversion means,
A data processing device comprising: A data conversion unit that converts a plurality of types of numerical data into one management data for each of a plurality of management targets in a data format generated by the format generation unit;
A data storage unit for storing the management data converted into one by the data conversion unit for each of the plurality of management targets;
The data processing device according to claim 3, further comprising: 5. The data processing apparatus according to claim 4, wherein the data storage unit converts the binary management data of a plurality of bits into a decimal number and then stores the data. The data processing device according to claim 3, wherein the format generating unit generates a data format in which a plurality of types of bit strings of the numerical data are arranged in a line in a predetermined order. 7. The data processing apparatus according to claim 6, wherein the data conversion unit arranges a plurality of types of bit strings of the numerical data in a predetermined order in a row corresponding to the data format. The data conversion means,
Bit shift means for sequentially shifting a plurality of types of bit strings of the numerical data corresponding to the data format,
Bit addition means for adding a plurality of types of bit strings of the numerical data shifted by the bit shift means,
The data processing device according to claim 7, comprising: An information storage medium storing computer-readable software for data management of a plurality of management targets to which a plurality of types of numerical data are respectively given,
Detecting the minimum number of bits in which all of the numerical data are represented for each type;
Summing the number of bits of the detected plurality of types of numerical data,
Converting this total number of bits into bytes,
Generating a data format in which a plurality of types of numerical data for each of the management objects are set as one management data with the converted number of bytes;
An information storage medium storing a program for causing a computer to execute the above. Data conversion of a plurality of types of numerical data into one management data for each of a plurality of management targets in the data format generated data,
Storing the management data converted into one data for each of the plurality of management targets;
10. The information storage medium according to claim 9, wherein a program for causing the computer to execute the following is also stored.

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