WO2013022028A1 - Semiconductor integrated circuit, communication device, communication system, and communication method - Google Patents

Semiconductor integrated circuit, communication device, communication system, and communication method Download PDF

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Publication number
WO2013022028A1
WO2013022028A1 PCT/JP2012/070215 JP2012070215W WO2013022028A1 WO 2013022028 A1 WO2013022028 A1 WO 2013022028A1 JP 2012070215 W JP2012070215 W JP 2012070215W WO 2013022028 A1 WO2013022028 A1 WO 2013022028A1
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data
communication
communication device
integrated circuit
semiconductor integrated
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PCT/JP2012/070215
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French (fr)
Japanese (ja)
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山本真佐史
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株式会社メガチップス
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Publication of WO2013022028A1 publication Critical patent/WO2013022028A1/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
    • H04L69/14—Multichannel or multilink protocols

Definitions

  • the present invention relates to a semiconductor integrated circuit, a communication device, a communication system, and a communication method.
  • Patent Document 1 discloses a communication system including a plurality of communication devices.
  • each communication device has a wired communication unit such as power line communication and a wireless communication unit such as a wireless LAN.
  • Each communication device can communicate with other communication devices by both wired communication and wireless communication.
  • the first communication device transmits the same data to the second communication device by both wired communication and wireless communication. .
  • communication reliability can be improved by communicating the same data using a plurality of communication paths.
  • the first communication device transmits the same data to the second communication device by both wired communication and wireless communication. That is, complete data is communicated between the communication devices by wired communication and wireless communication. Accordingly, there is a problem that the confidentiality of communication is not sufficient because communication data is illegally intercepted by a third party in either one of wired communication and wireless communication because complete data is acquired.
  • the present invention has been made to solve such a problem, and can improve the secrecy of communication between communication devices that can communicate via a plurality of communication paths, a semiconductor integrated circuit, a communication device,
  • An object of the present invention is to obtain a communication system and a communication method.
  • a semiconductor integrated circuit is a semiconductor integrated circuit mounted on the communication device in a communication system in which a communication device communicates with another communication device via a plurality of communication paths. From the first communication unit that communicates with the other communication device via the first communication channel, the second communication unit that communicates with the other communication device via the second communication channel, and the communication device A data control unit that controls transmission data to be transmitted to the other communication device, and the data control unit processes the transmission data to associate the first data with the first data.
  • a data processing unit that generates second data to be transmitted, the first data is transmitted from the first communication unit to the other communication device, and the second data is transmitted from the second communication unit to the other communication device. Allocate data for transmission to other communication devices It is characterized in that it has a data distribution unit to separate the.
  • the data processing unit generates first data and second data related to the first data by processing the transmission data.
  • the data distribution unit transmits the first data from the first communication unit to the other communication device via the first communication path, and the second data is transmitted from the second communication unit to the second communication.
  • the data is distributed so as to be transmitted to other communication devices via the path.
  • the transmission data is divided into the first data and the second data, and the first The first data is transmitted via the second communication path, and the second data is transmitted via the second communication path.
  • a semiconductor integrated circuit is a semiconductor integrated circuit mounted on the other communication device in a communication system in which a communication device and another communication device communicate via a plurality of communication paths.
  • a first communication unit that communicates with the communication device via a first communication channel
  • a second communication unit that communicates with the communication device via a second communication channel
  • a data control unit that controls received data, wherein the first communication unit receives first data from the communication device, and the second communication unit receives second data from the communication device.
  • the data control unit receives the first data and the second data associated with each other, the data association unit associates the first data with the second data, and the first data associated with the data association unit. Based on the data of 2, before It is characterized in that it has a data processing unit for restoring the transmission data transmitted from the communication device to said another communication apparatus.
  • the first communication unit receives the first data from the communication device, and the second communication unit receives the second data from the communication device.
  • the data association unit associates the first data and the second data associated with each other.
  • the data processing unit restores the transmission data transmitted from the communication device to the other communication device based on the first data and the second data associated with each other by the data association unit.
  • the transmission data is divided into the first data and the second data, and the first The first data is transmitted via the second communication path, and the second data is transmitted via the second communication path.
  • the semiconductor integrated circuit according to the third aspect of the present invention is the semiconductor integrated circuit according to the first or second aspect, in particular, the first data is an encryption generated by encrypting the transmission data. Including the data, and the second data includes an encryption key used for decrypting the encrypted data.
  • the first data includes encrypted data generated by encrypting the transmission data
  • the second data is an encryption used for decrypting the encrypted data. Includes key.
  • the semiconductor integrated circuit according to the fourth aspect of the present invention is particularly the semiconductor integrated circuit according to the first or second aspect, wherein the first data is a predetermined division process and rearrangement process for the transmission data.
  • the second data includes information related to the procedure of the division process and the rearrangement process.
  • the first data includes a plurality of divided data obtained by performing predetermined division processing and rearrangement processing on transmission data, and the second data is divided. It includes information on the procedure of processing and rearrangement processing. In this way, it is possible to improve the confidentiality of communication by transmitting a plurality of pieces of divided data and information related to the procedure of the division process and the rearrangement process via different communication paths.
  • the semiconductor integrated circuit according to the fifth aspect of the present invention is particularly the semiconductor integrated circuit according to the first or second aspect, wherein the first data is a predetermined division process and rearrangement process for the transmission data. Including a first group of divided data among the plurality of divided data, and the second data includes a second group of divided data among the plurality of divided data. is there.
  • the first data is the first group of divided data among the plurality of divided data obtained by performing predetermined division processing and rearrangement processing on the transmission data.
  • the second data includes the second group of divided data among the plurality of divided data.
  • the semiconductor integrated circuit according to the sixth aspect of the present invention is particularly the semiconductor integrated circuit according to the first or second aspect, wherein the first data is a predetermined division process and rearrangement process for the transmission data.
  • the second group of divided data is included.
  • the first data includes the first group of divided data of the plurality of divided data obtained by performing predetermined division processing and rearrangement processing on the transmission data.
  • the second data includes the second group of divided data among the plurality of divided data.
  • the semiconductor integrated circuit according to a seventh aspect of the present invention is the semiconductor integrated circuit according to the first or second aspect, in particular, the first data extracted is data of a specific bit in the transmission data. It includes a first group of bit data, and the second data includes a second group of bit data obtained by extracting data of other specific bits of the transmission data.
  • the first data includes the first group of bit data obtained by extracting specific bits of the transmission data
  • the second data includes the transmission data.
  • a second group of bit data obtained by extracting data of other specific bits is included.
  • the semiconductor integrated circuit according to the eighth aspect of the present invention is particularly the semiconductor integrated circuit according to the first or second aspect, wherein the first data is data of a specific bit in the transmission data.
  • the first data includes a first group of bit data obtained by extracting data of a specific bit of the transmission data, and information regarding a bit extraction procedure
  • the second data includes a second group of bit data obtained by extracting data of other specific bits of the transmission data.
  • the semiconductor integrated circuit according to a ninth aspect of the present invention is the semiconductor integrated circuit according to any one of the first to eighth aspects, in particular, the transmission data includes the first communication path and the second communication. The first data and the second data are distributed based on the effective traffic on the road.
  • the transmission data is distributed to the first data and the second data based on the effective communication amount of the first communication path and the second communication path.
  • the semiconductor integrated circuit according to a tenth aspect of the present invention is the semiconductor integrated circuit according to any one of the first to eighth aspects, in particular, the first data is an error correction code of the second data.
  • the second data includes an error correction code of the first data.
  • the first data includes the error correction code of the second data
  • the second data includes the error correction code of the first data.
  • the semiconductor integrated circuit according to the eleventh aspect of the present invention is the semiconductor integrated circuit according to any one of the first to eighth aspects, in particular, the communication success rate of the first communication path is the second communication path.
  • the communication success rate is higher, an error correction code having an error correction capability higher than that of the error correction code added to the first data is added to the second data.
  • the semiconductor integrated circuit of the eleventh aspect when the communication success rate of the first communication path is higher than the communication success rate of the second communication path, the second data is added to the first data.
  • An error correction code having a higher error correction capability than the error correction code is added. In this way, it is possible to improve the reliability of communication by adding a correction code having a high error correction capability to the second data transmitted via the second communication channel having a low communication success rate. It becomes.
  • the semiconductor integrated circuit according to a twelfth aspect of the present invention is the semiconductor integrated circuit according to any one of the first to eighth aspects, in particular, the first data includes the transmission data, and the second data The data includes an error correction code of the transmission data.
  • the first data includes transmission data
  • the second data includes an error correction code for transmission data.
  • a communication device includes the semiconductor integrated circuit according to the first aspect.
  • the communication device it is possible to improve the confidentiality of communication by including the semiconductor integrated circuit according to the first aspect.
  • a communication device includes the semiconductor integrated circuit according to the second aspect.
  • the communication device it is possible to improve the confidentiality of communication by including the semiconductor integrated circuit according to the second aspect.
  • a communication system includes the communication device according to the thirteenth aspect and the communication device according to the fourteenth aspect.
  • the communication confidentiality can be improved by including the communication apparatus according to the thirteenth aspect and the communication apparatus according to the fourteenth aspect.
  • a communication method is a communication method in a communication system in which a first communication device and a second communication device communicate with each other via a plurality of communication paths.
  • the first data and the second data related to the first data are processed by processing transmission data to be transmitted from the first communication device to the second communication device.
  • the first data is transmitted to the other communication device via the first communication channel, and the second data is transmitted to the second communication channel.
  • D associating the first data and the second data associated with each other in the second communication device, and (E) the step associated with the step (D). Restoring the transmission data based on the first data and the second data.
  • the first communication device generates first data and second data related to the first data by processing the transmission data.
  • the first communication device transmits the first data to the second communication device via the first communication channel, and the second data passes to the second communication device via the second communication channel. Sort data to be sent.
  • the second communication device receives the first data via the first communication path and receives the second data via the second communication path. Further, the second communication device associates the first data and the second data associated with each other, and restores the transmission data based on the associated first data and second data.
  • the transmission data is divided into the first data and the second data, and the first The first data is transmitted via the second communication path, and the second data is transmitted via the second communication path.
  • FIG. 1 is a diagram showing a simplified overall configuration of a communication system 1 according to an embodiment of the present invention.
  • the communication system 1 is a system constructed in a user's house, for example, and includes a plurality of communication devices. In the example shown in FIG. 1, only four communication devices 2 and 3A to 3C are representatively shown for simplification of explanation.
  • the communication devices 3A to 3C are connected to the communication device 2 via an arbitrary wired communication path 4 such as a power line, a wired LAN, or a coaxial line. Accordingly, the communication devices 3A to 3C can perform wired communication with the communication device 2 via the wired communication path 4.
  • the communication devices 2 and 3A to 3C have an arbitrary wireless communication function such as a wireless LAN or short-range wireless communication.
  • the communication devices 3A to 3C can perform wireless communication with the communication device 2 via the wireless communication path, as indicated by broken lines in FIG.
  • the communication speed of the wireless communication path is higher than the communication speed of the wired communication path 4.
  • the communication devices 3A to 3C measure, for example, the power consumption of each home appliance, and transmit data including the measurement results to the communication device 2.
  • the communication devices 3A to 3C are collectively referred to as “communication device 3” unless otherwise distinguished.
  • the communication device 2 receives data transmitted from the plurality of communication devices 3. Then, by performing statistical processing based on the received data, the power usage situation in the user's house is analyzed, and the analysis result is displayed on the monitor and provided to the user.
  • FIG. 2 is a diagram showing a simplified configuration of the semiconductor integrated circuit 10 mounted on the communication device 3.
  • the semiconductor integrated circuit 10 includes a CPU 11, a data control unit 12, a wireless communication unit 13, and a wired communication unit 14.
  • the data control unit 12 includes a data processing unit 21 and a data distribution unit 22.
  • the CPU 11 generates transmission data D0 to be transmitted from the communication device 3 to the communication device 2.
  • the data processing unit 21 processes the transmission data D0 input from the CPU 11 to generate data D1 and data D2 related to the data D1, and unique identification information for the data D1 and D2 related to each other Is granted. Details of the data D1 and D2 will be described later.
  • the data distribution unit 22 distributes the data D1 and D2 so that the data D1 is transmitted from the wireless communication unit 13 and the data D2 is transmitted from the wired communication unit 14.
  • the wireless communication unit 13 transmits the data D1 input from the data distribution unit 22 to the communication device 2 via the wireless communication path.
  • the wired communication unit 14 transmits the data D ⁇ b> 2 input from the data distribution unit 22 to the communication device 2 via the wired communication path 4.
  • FIG. 3 is a diagram showing a simplified configuration of the semiconductor integrated circuit 30 mounted on the communication device 2.
  • the semiconductor integrated circuit 30 includes a CPU 31, a data control unit 32, a wireless communication unit 33, and a wired communication unit 34.
  • the data control unit 32 includes a data processing unit 41 and a data association unit 42.
  • the wireless communication unit 33 receives the data D1 transmitted from the communication device 3.
  • the wired communication unit 34 receives the data D2 transmitted from the communication device 3.
  • the data association unit 42 associates the data D1 and the data D2 that are related to each other out of the plurality of data input from the wireless communication unit 33 and the wired communication unit 34 based on the identification information given to each data.
  • the data processing unit 41 restores the transmission data D0 based on the data D1 and D2 input from the data association unit 42, and inputs the restored transmission data D0 to the CPU 31.
  • FIG. 4 is a diagram illustrating a first example of data D1 and D2 generation processing by the data processing unit 21.
  • the data processing unit 21 inputs transmission data D0 from the CPU 11.
  • the data processing unit 21 generates encrypted data by encrypting the transmission data D0 using a predetermined encryption key DX.
  • the data processing unit 21 generates data D1 including encrypted data, and generates data D2 including the encryption key DX.
  • Data D1 and data D2 related to certain transmission data D0 may be transmitted from the communication device 3 to the communication device 2 at the same transmission timing, or may be transmitted at different timings. When the transmission timing is different, for example, data D1 related to a certain data D0 and data D2 related to the next data D0 are transmitted at the same transmission timing.
  • the encryption key DX may be different for each predetermined number (one or a plurality) of transmission data D0, or may be different for each predetermined period.
  • the data association unit 42 associates data D1 and D2 that are related to each other (that is, data D1 and D2 generated with respect to the same transmission data D0). Further, the data processing unit 41 restores the transmission data D0 before being encrypted by decrypting the encrypted data included in the data D1 using the encryption key DX included in the data D2.
  • FIG. 5 is a diagram illustrating a second example of the generation processing of the data D1 and D2 by the data processing unit 21.
  • the data processing unit 21 inputs transmission data D0 from the CPU 11.
  • the data processing unit 21 generates a plurality of pieces of divided data D1A to D1H by dividing the transmission data D0 into arbitrary byte lengths.
  • the data processing unit 21 arbitrarily rearranges the divided data D1A to D1H to generate data D1 including the rearranged divided data D1A to D1H.
  • the data processing unit 21 creates processing procedure information DY indicating the byte length of each of the divided data D1A to D1H and the rearranged arrangement order, and generates data D2 including the processing procedure information DY.
  • data D1 and data D2 related to certain transmission data D0 may be transmitted from the communication device 3 to the communication device 2 at the same transmission timing, or may be different in transmission timing. Further, the processing procedures of the division process and the rearrangement process may be different for each predetermined number (one or a plurality) of transmission data D0, or may be different for each predetermined period.
  • the data association unit 42 associates data D1 and D2 that are related to each other (that is, data D1 and D2 generated with respect to the same transmission data D0). Further, the data processing unit 41 restores the original transmission data D0 by rearranging the divided data D1A to D1H included in the data D1 in the original arrangement order based on the processing procedure information DY included in the data D2. .
  • FIG. 6 is a diagram illustrating a third example of the generation processing of the data D1 and D2 by the data processing unit 21.
  • the data processing unit 21 inputs transmission data D0 from the CPU 11.
  • the data processing unit 21 generates a plurality of divided data D1A to D1H by dividing the transmission data D0 for each predetermined byte length defined in advance.
  • the data processing unit 21 rearranges predetermined division data defined in advance among the division data D1A to D1H in a predetermined order and arranges the plurality of division data (FIG. 6).
  • data D1 including divided data D1E, D1G, D1B, D1H) is generated.
  • the data processing unit 21 rearranges predetermined division data defined in advance among the division data D1A to D1H in a predetermined order, and arranges a plurality of pieces of division data (FIG. 6).
  • data D2 including divided data D1A, D1F, D1D, and D1C) is generated.
  • data D1 and data D2 related to certain transmission data D0 may be transmitted from the communication device 3 to the communication device 2 at the same transmission timing, or may be different in transmission timing.
  • the processing procedures of the dividing process and the rearranging process may be different for each predetermined number (one or a plurality) of transmission data D0 according to a predetermined rule, or may be different for each predetermined period.
  • the data association unit 42 associates data D1 and D2 that are related to each other (that is, data D1 and D2 generated with respect to the same transmission data D0).
  • the data processing unit 41 restores the original transmission data D0 by rearranging the divided data D1A to D1H included in the data D1 and D2 in the original arrangement order according to a predetermined processing procedure defined in advance.
  • FIG. 7 is a diagram illustrating a fourth example of the data D1 and D2 generation processing by the data processing unit 21.
  • the data processing unit 21 inputs transmission data D0 from the CPU 11.
  • the data processing unit 21 generates a plurality of pieces of divided data D1A to D1H by dividing the transmission data D0 into arbitrary byte lengths.
  • the data processing unit 21 rearranges and arranges arbitrary divided data among the divided data D1A to D1H in an arbitrary order, thereby arranging a plurality of divided data (the divided data D1E, D1G, Data D1 including D1B, D1H) is generated.
  • the data processing unit 21 rearranges and arranges arbitrary divided data among the divided data D1A to D1H in an arbitrary order, thereby arranging a plurality of divided data (the divided data D1A, D1F, D1D in the example of FIG. 7). , D1C). Further, the data processing unit 21 creates processing procedure information DY indicating the byte length of each of the divided data D1A to D1H and the arrangement order of the divided data after rearrangement in the data D1 and D2, and the processing procedure information DY is generated. Include in data D1. As in the first example, data D1 and data D2 related to certain transmission data D0 may be transmitted from the communication device 3 to the communication device 2 at the same transmission timing, or may be different in transmission timing. Further, the processing procedures of the division process and the rearrangement process may be different for each predetermined number (one or a plurality) of transmission data D0, or may be different for each predetermined period.
  • the data association unit 42 associates data D1 and D2 that are related to each other (that is, data D1 and D2 generated with respect to the same transmission data D0).
  • the data processing unit 41 rearranges the original transmission data D0 by rearranging the divided data D1A to D1H included in the data D1 and D2 in the original arrangement order based on the processing procedure information DY included in the data D1. Restore.
  • FIG. 8 is a diagram illustrating a fifth example of the generation processing of the data D1 and D2 by the data processing unit 21.
  • the data processing unit 21 inputs transmission data D0 from the CPU 11.
  • the data processing unit 21 extracts predetermined specific bit data D1P (for example, odd-bit data) from the transmission data D0, thereby generating data D1 including the specific bit data D1P.
  • the data processing unit 21 extracts specific bit data D1Q (for example, even-bit data) defined in advance from the transmission data D0, thereby generating data D2 including the specific bit data D1Q.
  • data D1 and data D2 related to certain transmission data D0 may be transmitted from the communication device 3 to the communication device 2 at the same transmission timing, or may be different in transmission timing. Further, the processing procedure of the bit data extraction processing may be different for each predetermined number (one or a plurality) of transmission data D0 according to a predetermined rule, or may be different for each predetermined period.
  • the data association unit 42 associates data D1 and D2 that are related to each other (that is, data D1 and D2 generated with respect to the same transmission data D0). Further, the data processing unit 41 restores the original transmission data D0 by combining the bit data D1P and D1Q included in the data D1 and D2 according to a predetermined processing procedure defined in advance.
  • FIG. 9 is a diagram illustrating a sixth example of the generation processing of the data D1 and D2 by the data processing unit 21.
  • the data processing unit 21 inputs transmission data D0 from the CPU 11.
  • the data processing unit 21 generates bit data D1P including the bit data D1P by extracting bit data D1P related to an arbitrary bit from the transmission data D0.
  • the data processing unit 21 extracts the bit data D1Q related to the remaining bits from the transmission data D0, thereby generating data D2 including the bit data D1Q.
  • the data processing unit 21 creates processing procedure information DZ indicating the extraction procedure of bit data in the data D1 and D2, and includes the processing procedure information DZ in the data D1.
  • data D1 and data D2 related to certain transmission data D0 may be transmitted from the communication device 3 to the communication device 2 at the same transmission timing, or may be different in transmission timing. Further, the processing procedure of the bit data extraction processing may be different for each predetermined number (one or a plurality) of transmission data D0, or may be different for each predetermined period.
  • the data association unit 42 associates data D1 and D2 that are related to each other (that is, data D1 and D2 generated with respect to the same transmission data D0).
  • the data processing unit 41 reconstructs the original transmission data D0 by combining the bit data D1P and D1Q included in the data D1 and D2 based on the processing procedure information DZ included in the data D1.
  • first to sixth examples can be applied in any combination. For example, by changing and applying the first to sixth examples every transmission data, every predetermined period, every time a command is input from the communication device 2, or at random, the confidentiality of communication Can be further improved.
  • the example in which the transmission data D0 is divided into the data D1 and D2 mainly from the viewpoint of improving the confidentiality of communication has been described.
  • a method for improving reliability will be described.
  • FIG. 10 is a diagram illustrating a seventh example of the generation processing of the data D1 and D2 by the data processing unit 21.
  • the data processing unit 21 inputs transmission data D0 from the CPU 11.
  • the data processing unit 21 generates a plurality of divided data D1A to D1F by dividing the transmission data D0 for each predetermined byte length defined in advance.
  • the data processing unit 21 determines the effective communication amount (for example, an index determined based on the communication success rate and the communication speed) within the most recent predetermined period related to the wireless communication from the wireless communication unit 13, and the wired communication unit 14.
  • the effective communication amount for example, an index determined based on the communication success rate and the communication speed
  • the ratio of the divided data to be distributed to the data D1 and D2 among the divided data D1A to D1F is determined. For example, when the effective communication amount of wireless communication is twice the effective communication amount of wired communication, the ratio of the divided data allocated to the data D1 is set to twice the ratio of the divided data allocated to the data D2. In the example of FIG. 10, the divided data D1A, D1C, D1D, and D1F are distributed to the data D1, and the divided data D1B and D1E are distributed to the data D2.
  • data D2 transmitted by wired communication with a low communication success rate includes two pieces of divided data D1B and D1E, respectively.
  • FIG. 11 is a diagram illustrating an eighth example of the generation processing of the data D1 and D2 by the data processing unit 21.
  • the data processing unit 21 inputs transmission data D0 from the CPU 11.
  • the data processing unit 21 generates a plurality of divided data D1A to D1F by dividing the transmission data D0 for each predetermined byte length defined in advance.
  • the data processing unit 21 generates error correction codes EA to EF for detecting and correcting communication errors related to the divided data D1A to D1F.
  • the data processing unit 21 includes the divided data D1A, D1C, and D1E in the data D1, and includes the error correction codes EA, EC, and EE in the data D2.
  • the data processing unit 21 includes the divided data D1B, D1D, and D1F in the data D2, and includes the error correction codes EB, ED, and EF in the data D1.
  • the divided data D1A ⁇ the error correction code EB ⁇ the divided data D1C ⁇ the error correction code ED ⁇ the divided data D1E ⁇ the error correction code EF is arranged, and in the data D2, the error correction code EA ⁇
  • the divided data D1B, the error correction code EC, the divided data D1D, the error correction code EE, and the divided data D1F are arranged in this order.
  • FIG. 12 is a diagram illustrating a ninth example of the generation processing of the data D1 and D2 by the data processing unit 21.
  • the data processing unit 21 inputs transmission data D0 from the CPU 11.
  • the data processing unit 21 generates a plurality of divided data D1A to D1F by dividing the transmission data D0 for each predetermined byte length defined in advance.
  • the data processing unit 21 includes the divided data D1A, D1C, and D1E in the data D1, and includes the divided data D1B, D1D, and D1F in the data D2.
  • the data processing unit 21 performs error correction codes EAn, ECn, EEn (for example, error for 1-bit correction) with low error correction capability for the divided data D1A, D1C, D1E transmitted by wireless communication with a high communication success rate. Correction code) is generated, and these error correction codes EAn, ECn, EEn are included in the data D1.
  • error correction codes EBh, EDh, and EFh for example, error correction codes for 8-bit correction
  • the divided data D1A ⁇ the error correction code EAn ⁇ the divided data D1C ⁇ the error correction code ECn ⁇ the divided data D1E ⁇ the error correction code EEn are arranged in this order, and in the data D2, the divided data D1B ⁇ the error.
  • the correction code EBh, the divided data D1D, the error correction code EDh, the divided data D1F, and the error correction code EFh are arranged in this order.
  • FIG. 13 is a diagram illustrating a tenth example of data D1 and D2 generation processing by the data processing unit 21.
  • the data processing unit 21 inputs transmission data D0 from the CPU 11.
  • the data processing unit 21 generates a plurality of divided data D1A to D1F by dividing the transmission data D0 for each predetermined byte length defined in advance.
  • the data processing unit 21 generates error correction codes EA to EF for detecting and correcting communication errors related to the divided data D1A to D1F.
  • the data processing unit 21 includes the divided data D1A to D1F in the data D1 and includes the error correction codes EA to EF in the data D2.
  • the tenth example is effective when the effective communication amount of wired communication is extremely lower than the effective communication amount of wireless communication.
  • data distribution can be adjusted according to the effective communication amount of wireless communication and wired communication. For example, when the difference in effective communication amount is large, part of the error correction codes EA to EF may be included in the data D1. Alternatively, when the difference in effective communication amount is small, a part of the divided data D1A to D1F may be included in the data D2.
  • the seventh to tenth examples can be applied in any combination, and the reliability of communication can be further improved by combining a plurality of examples.
  • the data processing unit 21 processes the transmission data D0, whereby the data D1 (first data) and the data D2 (second data) related to the data D1 are processed. Data). Further, the data distribution unit 22 transmits the data D1 from the wireless communication unit 13 (first communication unit) to the communication device 2 via the wireless communication path, and the data D2 is transmitted to the wired communication unit 14 (second communication unit). The data D1 and D2 are distributed so as to be transmitted to the communication device 2 via the wired communication path 4.
  • the transmission data D0 is divided into the data D1 and the data D2, and the data is transmitted via the wireless communication path.
  • D1 is transmitted, and data D2 is transmitted via the wired communication path 4.
  • the wireless communication unit 33 receives the data D1 from the communication device 3, and the wired communication unit 34 (second communication unit) Data D2 is received from the communication device 3.
  • the data association unit 42 associates data D1 and data D2 that are related to each other.
  • the data processing unit 41 restores the transmission data D0 transmitted from the communication device 3 to the communication device 2 based on the data D1 and the data D2 associated by the data association unit 42.
  • the transmission data D0 is divided into the data D1 and the data D2, and the data is transmitted via the wireless communication path.
  • D1 is transmitted, and data D2 is transmitted via the wired communication path 4.
  • the data D1 includes encrypted data generated by encrypting the transmission data D0, and the data D2 is an encryption key used for decrypting the encrypted data. Includes DX.
  • the data D1 includes a plurality of divided data D1A to D1H obtained by performing predetermined division processing and rearrangement processing on the transmission data D0. , Including process procedure information DY regarding the procedure of the division process and the rearrangement process. In this way, by transmitting the divided data D1A to D1H and the processing procedure information DY via different communication paths, it is possible to improve the confidentiality of communication.
  • the data D1 is a first group of a plurality of pieces of divided data D1A to D1H obtained by performing predetermined division processing and rearrangement processing on the transmission data D0.
  • the data D2 includes the second group of divided data among the plurality of divided data D1A to D1H.
  • the data D1 is a first group of a plurality of divided data D1A to D1H obtained by performing predetermined division processing and rearrangement processing on the transmission data D0.
  • the divided data and the processing procedure information DY, and the data D2 includes the second group of divided data among the plurality of divided data D1A to D1H.
  • the data D1 includes a first group of bit data obtained by extracting data of a specific bit from the transmission data D0, and the data D2 includes the transmission data D0.
  • a second group of bit data obtained by extracting data of other specific bits is included.
  • the data D1 includes the first group of bit data obtained by extracting data of a specific bit from the transmission data D0, and the processing procedure information DZ.
  • D2 includes a second group of bit data obtained by extracting data of other specific bits from the transmission data D0.
  • the transmission data D0 is distributed into data D1 and data D2 based on the effective communication amount of the wireless communication path and the wired communication path 4.
  • the transmission data D0 is distributed into data D1 and data D2 based on the effective communication amount of the wireless communication path and the wired communication path 4.
  • the data D1 includes the error correction code of the data D2, and the data D2 includes the error correction code of the data D1.
  • the error correction code it becomes possible to improve the reliability of communication.
  • the error correction code of the data D1 in the data D2 and including the error correction code of the data D2 in the data D1 it is possible to improve the confidentiality of communication.
  • the data D2 when the communication success rate of the wireless communication path is higher than the communication success rate of the wired communication path 4, the data D2 has an error correction code added to the data D1. In addition, an error correction code having a high error correction capability is added. As described above, it is possible to improve the reliability of communication by adding a correction code having a high error correction capability to the data D2 transmitted via the wired communication path 4 having a low communication success rate.
  • the data D1 includes transmission data
  • the data D2 includes an error correction code of the transmission data.
  • the error correction code it is possible to improve the reliability of communication.

Abstract

Provided is a semiconductor integrated circuit with which it is possible to improve communication confidentiality among communication devices that can communicate via a plurality of communication paths. A semiconductor integrated circuit (10) is provided with: a wireless communication unit (13) for communicating with a communication device (2) via a wireless communication path; a wired communication unit (14) for communicating with the communication device (2) via a wired communication path (4); and a data control unit (12) for controlling transmission data (D0) to be transmitted from a communication device (3) to the communication device (2). The data control unit (12) comprises: a data processing unit (21) which processes the transmission data (D0) to thereby generate first data (D1) and second data (D2) relating to the first data (D1); and a data allocation unit (22) for allocating the data (D1, D2) in such a way that the first data (D1) is transmitted from the wireless communication unit (13) to the communication device (2) and the second data (D2) is transmitted from the wired communication unit (14) to the communication device (2).

Description

半導体集積回路、通信装置、通信システム、及び通信方法Semiconductor integrated circuit, communication apparatus, communication system, and communication method
　本発明は、半導体集積回路、通信装置、通信システム、及び通信方法に関する。 The present invention relates to a semiconductor integrated circuit, a communication device, a communication system, and a communication method.
　下記特許文献１には、複数の通信装置を備える通信システムが開示されている。当該通信システムにおいて、各通信装置は、電力線通信等の有線通信部と、無線ＬＡＮ等の無線通信部とをそれぞれ有している。各通信装置は、有線通信及び無線通信の双方によって、他の通信装置と通信が可能である。第１の通信装置から第２の通信装置にデータを送信する場合には、第１の通信装置は、有線通信及び無線通信の双方によって、同一のデータを第２の通信装置に向けて送信する。このように、同一のデータを複数の通信路を用いて通信することにより、通信の信頼性を向上することができる。 The following Patent Document 1 discloses a communication system including a plurality of communication devices. In the communication system, each communication device has a wired communication unit such as power line communication and a wireless communication unit such as a wireless LAN. Each communication device can communicate with other communication devices by both wired communication and wireless communication. When transmitting data from the first communication device to the second communication device, the first communication device transmits the same data to the second communication device by both wired communication and wireless communication. . In this way, communication reliability can be improved by communicating the same data using a plurality of communication paths.
特開２０１０－２８５７２号公報JP 2010-28572 A
　しかしながら上記特許文献１に開示された通信システムによると、第１の通信装置は、有線通信及び無線通信の双方によって、同一のデータを第２の通信装置に向けて送信する。つまり、有線通信及び無線通信の各々によって、完全なデータが通信装置間でそれぞれ通信される。従って、有線通信及び無線通信のいずれか一方において第三者によって通信内容が不正に傍受された場合には、完全なデータが取得されてしまうため、通信の秘匿性が十分でないという問題がある。 However, according to the communication system disclosed in Patent Document 1, the first communication device transmits the same data to the second communication device by both wired communication and wireless communication. That is, complete data is communicated between the communication devices by wired communication and wireless communication. Accordingly, there is a problem that the confidentiality of communication is not sufficient because communication data is illegally intercepted by a third party in either one of wired communication and wireless communication because complete data is acquired.
　本発明はかかる問題を解決するために成されたものであり、複数の通信路を介して通信可能な通信装置間における通信の秘匿性を向上することが可能な、半導体集積回路、通信装置、通信システム、及び通信方法を得ることを目的とするものである。 The present invention has been made to solve such a problem, and can improve the secrecy of communication between communication devices that can communicate via a plurality of communication paths, a semiconductor integrated circuit, a communication device, An object of the present invention is to obtain a communication system and a communication method.
　本発明の第１の態様に係る半導体集積回路は、通信装置と他の通信装置とが複数の通信路を介して通信する通信システムにおいて、前記通信装置に実装される半導体集積回路であって、第１の通信路を介して前記他の通信装置と通信する第１の通信部と、第２の通信路を介して前記他の通信装置と通信する第２の通信部と、前記通信装置から前記他の通信装置に送信すべき送信データを制御するデータ制御部と、を備え、前記データ制御部は、前記送信データを処理することにより、第１のデータと、当該第１のデータに関連する第２のデータとを生成するデータ処理部と、前記第１のデータが前記第１の通信部から前記他の通信装置に送信され、前記第２のデータが前記第２の通信部から前記他の通信装置に送信されるよう、データを振り分けるデータ振分部と、を有することを特徴とするものである。 A semiconductor integrated circuit according to a first aspect of the present invention is a semiconductor integrated circuit mounted on the communication device in a communication system in which a communication device communicates with another communication device via a plurality of communication paths. From the first communication unit that communicates with the other communication device via the first communication channel, the second communication unit that communicates with the other communication device via the second communication channel, and the communication device A data control unit that controls transmission data to be transmitted to the other communication device, and the data control unit processes the transmission data to associate the first data with the first data. A data processing unit that generates second data to be transmitted, the first data is transmitted from the first communication unit to the other communication device, and the second data is transmitted from the second communication unit to the other communication device. Allocate data for transmission to other communication devices It is characterized in that it has a data distribution unit to separate the.
　第１の態様に係る半導体集積回路によれば、データ処理部は、送信データを処理することにより、第１のデータと、当該第１のデータに関連する第２のデータとを生成する。また、データ振分部は、第１のデータが第１の通信部から第１の通信路を介して他の通信装置に送信され、第２のデータが第２の通信部から第２の通信路を介して他の通信装置に送信されるよう、データを振り分ける。このように、第１の通信路及び第２の通信路の一方又は双方に完全な送信データを送信するのではなく、送信データを第１のデータと第２のデータとに振り分けて、第１の通信路を介して第１のデータを送信し、第２の通信路を介して第２のデータを送信する。その結果、第１のデータ及び第２のデータの一方のみを取得しても完全な送信データを復元できないため、通信の秘匿性を向上することが可能となる。 According to the semiconductor integrated circuit according to the first aspect, the data processing unit generates first data and second data related to the first data by processing the transmission data. In addition, the data distribution unit transmits the first data from the first communication unit to the other communication device via the first communication path, and the second data is transmitted from the second communication unit to the second communication. The data is distributed so as to be transmitted to other communication devices via the path. Thus, instead of transmitting complete transmission data to one or both of the first communication path and the second communication path, the transmission data is divided into the first data and the second data, and the first The first data is transmitted via the second communication path, and the second data is transmitted via the second communication path. As a result, even if only one of the first data and the second data is acquired, complete transmission data cannot be restored, so that the confidentiality of communication can be improved.
　本発明の第２の態様に係る半導体集積回路は、通信装置と他の通信装置とが複数の通信路を介して通信する通信システムにおいて、前記他の通信装置に実装される半導体集積回路であって、第１の通信路を介して前記通信装置と通信する第１の通信部と、第２の通信路を介して前記通信装置と通信する第２の通信部と、前記通信装置から受信した受信データを制御するデータ制御部と、を備え、前記第１の通信部は、第１のデータを前記通信装置から受信し、前記第２の通信部は、第２のデータを前記通信装置から受信し、前記データ制御部は、互いに関連する前記第１のデータと前記第２のデータとを対応付けるデータ対応付け部と、前記データ対応付け部によって対応付けられた前記第１のデータと前記第２のデータとに基づいて、前記通信装置から前記他の通信装置に送信された送信データを復元するデータ処理部と、を有することを特徴とするものである。 A semiconductor integrated circuit according to a second aspect of the present invention is a semiconductor integrated circuit mounted on the other communication device in a communication system in which a communication device and another communication device communicate via a plurality of communication paths. Received from the communication device, a first communication unit that communicates with the communication device via a first communication channel, a second communication unit that communicates with the communication device via a second communication channel, and A data control unit that controls received data, wherein the first communication unit receives first data from the communication device, and the second communication unit receives second data from the communication device. The data control unit receives the first data and the second data associated with each other, the data association unit associates the first data with the second data, and the first data associated with the data association unit. Based on the data of 2, before It is characterized in that it has a data processing unit for restoring the transmission data transmitted from the communication device to said another communication apparatus.
　第２の態様に係る半導体集積回路によれば、第１の通信部は第１のデータを通信装置から受信し、第２の通信部は第２のデータを通信装置から受信する。また、データ対応付け部は、互いに関連する第１のデータと第２のデータとを対応付ける。そして、データ処理部は、データ対応付け部によって対応付けられた第１のデータと第２のデータとに基づいて、通信装置から他の通信装置に送信された送信データを復元する。このように、第１の通信路及び第２の通信路の一方又は双方に完全な送信データを送信するのではなく、送信データを第１のデータと第２のデータとに振り分けて、第１の通信路を介して第１のデータを送信し、第２の通信路を介して第２のデータを送信する。その結果、第１のデータ及び第２のデータの一方のみを取得しても完全な送信データを復元できないため、通信の秘匿性を向上することが可能となる。 According to the semiconductor integrated circuit according to the second aspect, the first communication unit receives the first data from the communication device, and the second communication unit receives the second data from the communication device. The data association unit associates the first data and the second data associated with each other. The data processing unit restores the transmission data transmitted from the communication device to the other communication device based on the first data and the second data associated with each other by the data association unit. Thus, instead of transmitting complete transmission data to one or both of the first communication path and the second communication path, the transmission data is divided into the first data and the second data, and the first The first data is transmitted via the second communication path, and the second data is transmitted via the second communication path. As a result, even if only one of the first data and the second data is acquired, complete transmission data cannot be restored, so that the confidentiality of communication can be improved.
　本発明の第３の態様に係る半導体集積回路は、第１又は第２の態様に係る半導体集積回路において特に、前記第１のデータは、前記送信データを暗号化することによって生成された暗号化データを含み、前記第２のデータは、前記暗号化データの復号に用いる暗号鍵を含むことを特徴とするものである。 The semiconductor integrated circuit according to the third aspect of the present invention is the semiconductor integrated circuit according to the first or second aspect, in particular, the first data is an encryption generated by encrypting the transmission data. Including the data, and the second data includes an encryption key used for decrypting the encrypted data.
　第３の態様に係る半導体集積回路によれば、第１のデータは、送信データを暗号化することによって生成された暗号化データを含み、第２のデータは、暗号化データの復号に用いる暗号鍵を含む。このように、暗号化データと暗号鍵とを異なる通信路を介して送信することにより、通信の秘匿性を向上することが可能となる。 According to the semiconductor integrated circuit of the third aspect, the first data includes encrypted data generated by encrypting the transmission data, and the second data is an encryption used for decrypting the encrypted data. Includes key. Thus, by transmitting the encrypted data and the encryption key via different communication paths, it is possible to improve the confidentiality of communication.
　本発明の第４の態様に係る半導体集積回路は、第１又は第２の態様に係る半導体集積回路において特に、前記第１のデータは、前記送信データに対して所定の分割処理及び並び替え処理が行われた複数の分割データを含み、前記第２のデータは、前記分割処理及び前記並び替え処理の手順に関する情報を含むことを特徴とするものである。 The semiconductor integrated circuit according to the fourth aspect of the present invention is particularly the semiconductor integrated circuit according to the first or second aspect, wherein the first data is a predetermined division process and rearrangement process for the transmission data. The second data includes information related to the procedure of the division process and the rearrangement process.
　第４の態様に係る半導体集積回路によれば、第１のデータは、送信データに対して所定の分割処理及び並び替え処理が行われた複数の分割データを含み、第２のデータは、分割処理及び並び替え処理の手順に関する情報を含む。このように、複数の分割データと、分割処理及び並び替え処理の手順に関する情報とを異なる通信路を介して送信することにより、通信の秘匿性を向上することが可能となる。 According to the semiconductor integrated circuit of the fourth aspect, the first data includes a plurality of divided data obtained by performing predetermined division processing and rearrangement processing on transmission data, and the second data is divided. It includes information on the procedure of processing and rearrangement processing. In this way, it is possible to improve the confidentiality of communication by transmitting a plurality of pieces of divided data and information related to the procedure of the division process and the rearrangement process via different communication paths.
　本発明の第５の態様に係る半導体集積回路は、第１又は第２の態様に係る半導体集積回路において特に、前記第１のデータは、前記送信データに対して所定の分割処理及び並び替え処理が行われた複数の分割データのうちの第１群の分割データを含み、前記第２のデータは、前記複数の分割データのうちの第２群の分割データを含むことを特徴とするものである。 The semiconductor integrated circuit according to the fifth aspect of the present invention is particularly the semiconductor integrated circuit according to the first or second aspect, wherein the first data is a predetermined division process and rearrangement process for the transmission data. Including a first group of divided data among the plurality of divided data, and the second data includes a second group of divided data among the plurality of divided data. is there.
　第５の態様に係る半導体集積回路によれば、第１のデータは、送信データに対して所定の分割処理及び並び替え処理が行われた複数の分割データのうちの第１群の分割データを含み、第２のデータは、複数の分割データのうちの第２群の分割データを含む。このように、第１群の分割データと第２群の分割データとを異なる通信路を介して送信することにより、通信の秘匿性を向上することが可能となる。 According to the semiconductor integrated circuit of the fifth aspect, the first data is the first group of divided data among the plurality of divided data obtained by performing predetermined division processing and rearrangement processing on the transmission data. The second data includes the second group of divided data among the plurality of divided data. Thus, by transmitting the first group of divided data and the second group of divided data via different communication paths, it is possible to improve the confidentiality of communication.
　本発明の第６の態様に係る半導体集積回路は、第１又は第２の態様に係る半導体集積回路において特に、前記第１のデータは、前記送信データに対して所定の分割処理及び並び替え処理が行われた複数の分割データのうちの第１群の分割データと、前記分割処理及び前記並び替え処理の手順に関する情報とを含み、前記第２のデータは、前記複数の分割データのうちの第２群の分割データを含むことを特徴とするものである。 The semiconductor integrated circuit according to the sixth aspect of the present invention is particularly the semiconductor integrated circuit according to the first or second aspect, wherein the first data is a predetermined division process and rearrangement process for the transmission data. The divided data of the first group of the plurality of divided data that has been performed and information related to the procedure of the dividing process and the rearranging process, and the second data includes the divided data of the plurality of divided data The second group of divided data is included.
　第６の態様に係る半導体集積回路によれば、第１のデータは、送信データに対して所定の分割処理及び並び替え処理が行われた複数の分割データのうちの第１群の分割データと、分割処理及び並び替え処理の手順に関する情報とを含み、第２のデータは、複数の分割データのうちの第２群の分割データを含む。このように、第１群の分割データ並びに分割処理及び並び替え処理の手順に関する情報と、第２群の分割データとを異なる通信路を介して送信することにより、通信の秘匿性を向上することが可能となる。 According to the semiconductor integrated circuit of the sixth aspect, the first data includes the first group of divided data of the plurality of divided data obtained by performing predetermined division processing and rearrangement processing on the transmission data. The second data includes the second group of divided data among the plurality of divided data. Thus, the confidentiality of communication is improved by transmitting the divided data of the first group and the information regarding the procedure of the dividing process and the rearranging process and the divided data of the second group through different communication paths. Is possible.
　本発明の第７の態様に係る半導体集積回路は、第１又は第２の態様に係る半導体集積回路において特に、前記第１のデータは、前記送信データのうちの特定のビットのデータを抽出した第１群のビットデータを含み、前記第２のデータは、前記送信データのうちの他の特定のビットのデータを抽出した第２群のビットデータを含むことを特徴とするものである。 The semiconductor integrated circuit according to a seventh aspect of the present invention is the semiconductor integrated circuit according to the first or second aspect, in particular, the first data extracted is data of a specific bit in the transmission data. It includes a first group of bit data, and the second data includes a second group of bit data obtained by extracting data of other specific bits of the transmission data.
　第７の態様に係る半導体集積回路によれば、第１のデータは、送信データのうちの特定のビットのデータを抽出した第１群のビットデータを含み、第２のデータは、送信データのうちの他の特定のビットのデータを抽出した第２群のビットデータを含む。このように、第１群のビットデータと第２群のビットデータとを異なる通信路を介して送信することにより、通信の秘匿性を向上することが可能となる。 According to the semiconductor integrated circuit of the seventh aspect, the first data includes the first group of bit data obtained by extracting specific bits of the transmission data, and the second data includes the transmission data. A second group of bit data obtained by extracting data of other specific bits is included. Thus, by transmitting the first group of bit data and the second group of bit data via different communication paths, it is possible to improve the confidentiality of communication.
　本発明の第８の態様に係る半導体集積回路は、第１又は第２の態様に係る半導体集積回路において特に、前記第１のデータは、前記送信データのうちの特定のビットのデータを抽出した第１群のビットデータと、ビット抽出の手順に関する情報とを含み、前記第２のデータは、前記送信データのうちの他の特定のビットのデータを抽出した第２群のビットデータを含むことを特徴とするものである。 The semiconductor integrated circuit according to the eighth aspect of the present invention is particularly the semiconductor integrated circuit according to the first or second aspect, wherein the first data is data of a specific bit in the transmission data. A first group of bit data and information regarding a bit extraction procedure; and the second data includes a second group of bit data obtained by extracting data of other specific bits of the transmission data. It is characterized by.
　第８の態様に係る半導体集積回路によれば、第１のデータは、送信データのうちの特定のビットのデータを抽出した第１群のビットデータと、ビット抽出の手順に関する情報とを含み、第２のデータは、送信データのうちの他の特定のビットのデータを抽出した第２群のビットデータを含む。このように、第１群のビットデータ及びビット抽出の手順に関する情報と、第２群のビットデータとを異なる通信路を介して送信することにより、通信の秘匿性を向上することが可能となる。 According to the semiconductor integrated circuit of the eighth aspect, the first data includes a first group of bit data obtained by extracting data of a specific bit of the transmission data, and information regarding a bit extraction procedure, The second data includes a second group of bit data obtained by extracting data of other specific bits of the transmission data. As described above, by transmitting the first group of bit data and the bit extraction procedure information and the second group of bit data via different communication paths, it is possible to improve the confidentiality of communication. .
　本発明の第９の態様に係る半導体集積回路は、第１～第８のいずれか一つの態様に係る半導体集積回路において特に、前記送信データは、前記第１の通信路及び前記第２の通信路の実効通信量に基づいて、前記第１のデータと前記第２のデータとに振り分けられることを特徴とするものである。 The semiconductor integrated circuit according to a ninth aspect of the present invention is the semiconductor integrated circuit according to any one of the first to eighth aspects, in particular, the transmission data includes the first communication path and the second communication. The first data and the second data are distributed based on the effective traffic on the road.
　第９の態様に係る半導体集積回路によれば、送信データは、第１の通信路及び第２の通信路の実効通信量に基づいて、第１のデータと第２のデータとに振り分けられる。その結果、実効通信量の高い通信路に多くのデータを振り分けることにより、通信の信頼性を向上することが可能となる。 According to the semiconductor integrated circuit of the ninth aspect, the transmission data is distributed to the first data and the second data based on the effective communication amount of the first communication path and the second communication path. As a result, it is possible to improve communication reliability by allocating a large amount of data to a communication path with a high effective communication amount.
　本発明の第１０の態様に係る半導体集積回路は、第１～第８のいずれか一つの態様に係る半導体集積回路において特に、前記第１のデータは、前記第２のデータのエラー訂正コードを含み、前記第２のデータは、前記第１のデータのエラー訂正コードを含むことを特徴とするものである。 The semiconductor integrated circuit according to a tenth aspect of the present invention is the semiconductor integrated circuit according to any one of the first to eighth aspects, in particular, the first data is an error correction code of the second data. In addition, the second data includes an error correction code of the first data.
　第１０の態様に係る半導体集積回路によれば、第１のデータは第２のデータのエラー訂正コードを含み、第２のデータは第１のデータのエラー訂正コードを含む。このように、エラー訂正コードを送信することにより、通信の信頼性を向上することが可能となる。また、第１のデータのエラー訂正コードを第２のデータに含め、第２のデータのエラー訂正コードを第１のデータに含めることにより、通信の秘匿性を向上することが可能となる。 According to the semiconductor integrated circuit of the tenth aspect, the first data includes the error correction code of the second data, and the second data includes the error correction code of the first data. Thus, by transmitting the error correction code, it becomes possible to improve the reliability of communication. Also, by including the error correction code of the first data in the second data and including the error correction code of the second data in the first data, it is possible to improve the confidentiality of communication.
　本発明の第１１の態様に係る半導体集積回路は、第１～第８のいずれか一つの態様に係る半導体集積回路において特に、前記第１の通信路の通信成功率が前記第２の通信路の通信成功率より高い場合、前記第２のデータには、前記第１のデータに付加されるエラー訂正コードよりもエラー訂正能力の高いエラー訂正コードが付加されることを特徴とするものである。 The semiconductor integrated circuit according to the eleventh aspect of the present invention is the semiconductor integrated circuit according to any one of the first to eighth aspects, in particular, the communication success rate of the first communication path is the second communication path. When the communication success rate is higher, an error correction code having an error correction capability higher than that of the error correction code added to the first data is added to the second data. .
　第１１の態様に係る半導体集積回路によれば、第１の通信路の通信成功率が第２の通信路の通信成功率より高い場合、第２のデータには、第１のデータに付加されるエラー訂正コードよりもエラー訂正能力の高いエラー訂正コードが付加される。このように、通信成功率の低い第２の通信路を介して送信される第２のデータには、エラー訂正能力の高い訂正コードを付加することにより、通信の信頼性を向上することが可能となる。 According to the semiconductor integrated circuit of the eleventh aspect, when the communication success rate of the first communication path is higher than the communication success rate of the second communication path, the second data is added to the first data. An error correction code having a higher error correction capability than the error correction code is added. In this way, it is possible to improve the reliability of communication by adding a correction code having a high error correction capability to the second data transmitted via the second communication channel having a low communication success rate. It becomes.
　本発明の第１２の態様に係る半導体集積回路は、第１～第８のいずれか一つの態様に係る半導体集積回路において特に、前記第１のデータは、前記送信データを含み、前記第２のデータは、前記送信データのエラー訂正コードを含むことを特徴とするものである。 The semiconductor integrated circuit according to a twelfth aspect of the present invention is the semiconductor integrated circuit according to any one of the first to eighth aspects, in particular, the first data includes the transmission data, and the second data The data includes an error correction code of the transmission data.
　第１２の態様に係る半導体集積回路によれば、第１のデータは送信データを含み、第２のデータは送信データのエラー訂正コードを含む。このように、エラー訂正コードを送信することにより、通信の信頼性を向上することが可能となる。また、送信データとエラー訂正コードとを異なる通信路を介して送信することにより、通信の秘匿性を向上することが可能となる。 According to the semiconductor integrated circuit of the twelfth aspect, the first data includes transmission data, and the second data includes an error correction code for transmission data. Thus, by transmitting the error correction code, it becomes possible to improve the reliability of communication. Moreover, it is possible to improve the confidentiality of communication by transmitting the transmission data and the error correction code via different communication paths.
　本発明の第１３の態様に係る通信装置は、第１の態様に係る半導体集積回路を備えることを特徴とするものである。 A communication device according to a thirteenth aspect of the present invention includes the semiconductor integrated circuit according to the first aspect.
　第１３の態様に係る通信装置によれば、第１の態様に係る半導体集積回路を備えることにより、通信の秘匿性を向上することが可能となる。 According to the communication device according to the thirteenth aspect, it is possible to improve the confidentiality of communication by including the semiconductor integrated circuit according to the first aspect.
　本発明の第１４の態様に係る通信装置は、第２の態様に係る半導体集積回路を備えることを特徴とするものである。 A communication device according to a fourteenth aspect of the present invention includes the semiconductor integrated circuit according to the second aspect.
　第１４の態様に係る通信装置によれば、第２の態様に係る半導体集積回路を備えることにより、通信の秘匿性を向上することが可能となる。 According to the communication device according to the fourteenth aspect, it is possible to improve the confidentiality of communication by including the semiconductor integrated circuit according to the second aspect.
　本発明の第１５の態様に係る通信システムは、第１３の態様に係る通信装置と、第１４の態様に係る通信装置とを備えることを特徴とするものである。 A communication system according to a fifteenth aspect of the present invention includes the communication device according to the thirteenth aspect and the communication device according to the fourteenth aspect.
　第１５の態様に係る通信システムによれば、第１３の態様に係る通信装置と、第１４の態様に係る通信装置とを備えることにより、通信の秘匿性を向上することが可能となる。 According to the communication system according to the fifteenth aspect, the communication confidentiality can be improved by including the communication apparatus according to the thirteenth aspect and the communication apparatus according to the fourteenth aspect.
　本発明の第１６の態様に係る通信方法は、第１の通信装置と第２の通信装置とが複数の通信路を介して通信する通信システムにおける通信方法であって、（Ａ）前記第１の通信装置において、前記第１の通信装置から前記第２の通信装置に送信すべき送信データを処理することにより、第１のデータと、当該第１のデータに関連する第２のデータとを生成するステップと、（Ｂ）前記第１の通信装置において、前記第１のデータが第１の通信路を介して前記他の通信装置に送信され、前記第２のデータが第２の通信路を介して前記第２の通信装置に送信されるよう、データを振り分けるステップと、（Ｃ）前記第２の通信装置において、前記第１の通信路を介して前記第１のデータを受信し、前記第２の通信路を介して前記第２のデータを受信するステップと、（Ｄ）前記第２の通信装置において、互いに関連する前記第１のデータと前記第２のデータとを対応付けるステップと、（Ｅ）前記ステップ（Ｄ）によって対応付けられた前記第１のデータと前記第２のデータとに基づいて、前記送信データを復元するステップと、を備えることを特徴とするものである。 A communication method according to a sixteenth aspect of the present invention is a communication method in a communication system in which a first communication device and a second communication device communicate with each other via a plurality of communication paths. In the communication device, the first data and the second data related to the first data are processed by processing transmission data to be transmitted from the first communication device to the second communication device. And (B) in the first communication device, the first data is transmitted to the other communication device via the first communication channel, and the second data is transmitted to the second communication channel. And (C) receiving the first data via the first communication path in the second communication device, and distributing the data to be transmitted to the second communication device via The second data is transmitted through the second communication path. And (D) associating the first data and the second data associated with each other in the second communication device, and (E) the step associated with the step (D). Restoring the transmission data based on the first data and the second data.
　第１６の態様に係る通信方法によれば、第１の通信装置は、送信データを処理することにより、第１のデータと、当該第１のデータに関連する第２のデータとを生成する。また、第１の通信装置は、第１のデータが第１の通信路を介して第２の通信装置に送信され、第２のデータが第２の通信路を介して第２の通信装置に送信されるよう、データを振り分ける。第２の通信装置は、第１のデータを第１の通信路を介して受信し、第２のデータを第２の通信路を介して受信する。また、第２の通信装置は、互いに関連する第１のデータと第２のデータとを対応付け、対応付けられた第１のデータと第２のデータとに基づいて送信データを復元する。このように、第１の通信路及び第２の通信路の一方又は双方に完全な送信データを送信するのではなく、送信データを第１のデータと第２のデータとに振り分けて、第１の通信路を介して第１のデータを送信し、第２の通信路を介して第２のデータを送信する。その結果、第１のデータ及び第２のデータの一方のみを取得しても完全な送信データを復元できないため、通信の秘匿性を向上することが可能となる。 According to the communication method according to the sixteenth aspect, the first communication device generates first data and second data related to the first data by processing the transmission data. In addition, the first communication device transmits the first data to the second communication device via the first communication channel, and the second data passes to the second communication device via the second communication channel. Sort data to be sent. The second communication device receives the first data via the first communication path and receives the second data via the second communication path. Further, the second communication device associates the first data and the second data associated with each other, and restores the transmission data based on the associated first data and second data. Thus, instead of transmitting complete transmission data to one or both of the first communication path and the second communication path, the transmission data is divided into the first data and the second data, and the first The first data is transmitted via the second communication path, and the second data is transmitted via the second communication path. As a result, even if only one of the first data and the second data is acquired, complete transmission data cannot be restored, so that the confidentiality of communication can be improved.
　本発明によれば、複数の通信路を介して通信可能な通信装置間における通信の秘匿性を向上することが可能となる。 According to the present invention, it is possible to improve the confidentiality of communication between communication apparatuses that can communicate via a plurality of communication paths.
　この発明の目的、特徴、局面、および利点は、以下の詳細な説明と添付図面とによって、より明白となる。 The objects, features, aspects and advantages of the present invention will become more apparent from the following detailed description and the accompanying drawings.
本発明の実施の形態に係る通信システムの全体構成を簡略化して示す図である。It is a figure which simplifies and shows the whole structure of the communication system which concerns on embodiment of this invention. 通信装置に実装されている半導体集積回路の構成を簡略化して示す図である。It is a figure which simplifies and shows the structure of the semiconductor integrated circuit mounted in the communication apparatus. 通信装置に実装されている半導体集積回路の構成を簡略化して示す図である。It is a figure which simplifies and shows the structure of the semiconductor integrated circuit mounted in the communication apparatus. データ処理部によるデータの生成処理の第１の例を示す図である。It is a figure which shows the 1st example of the production | generation process of the data by a data processor. データ処理部によるデータの生成処理の第２の例を示す図である。It is a figure which shows the 2nd example of the production | generation process of the data by a data processor. データ処理部によるデータの生成処理の第３の例を示す図である。It is a figure which shows the 3rd example of the production | generation process of the data by a data processor. データ処理部によるデータの生成処理の第４の例を示す図である。It is a figure which shows the 4th example of the production | generation process of the data by a data processor. データ処理部によるデータの生成処理の第５の例を示す図である。It is a figure which shows the 5th example of the production | generation process of the data by a data processor. データ処理部によるデータの生成処理の第６の例を示す図である。It is a figure which shows the 6th example of the production | generation process of the data by a data processor. データ処理部によるデータの生成処理の第７の例を示す図である。It is a figure which shows the 7th example of the production | generation process of the data by a data processor. データ処理部によるデータの生成処理の第８の例を示す図である。It is a figure which shows the 8th example of the production | generation process of the data by a data processor. データ処理部によるデータの生成処理の第９の例を示す図である。It is a figure which shows the 9th example of the production | generation process of the data by a data processor. データ処理部によるデータの生成処理の第１０の例を示す図である。It is a figure which shows the 10th example of the production | generation process of the data by a data processor.
　以下、本発明の実施の形態について、図面を用いて詳細に説明する。なお、異なる図面において同一の符号を付した要素は、同一又は相応する要素を示すものとする。 Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In addition, the element which attached | subjected the same code | symbol in different drawing shall show the same or corresponding element.
　図１は、本発明の実施の形態に係る通信システム１の全体構成を簡略化して示す図である。通信システム１は、例えばユーザの住宅内に構築されたシステムであり、複数の通信装置を備えて構成されている。図１に示した例では、説明の簡略化のため、代表的に４つの通信装置２，３Ａ～３Ｃのみを示している。通信装置３Ａ～３Ｃは、電力線、有線ＬＡＮ、又は同軸線等の任意の有線通信路４を介して、通信装置２に接続されている。これにより通信装置３Ａ～３Ｃは、有線通信路４を介して通信装置２と有線通信を行うことが可能である。また、通信装置２，３Ａ～３Ｃは、無線ＬＡＮ又は短距離無線通信等の任意の無線通信機能を備えている。これにより通信装置３Ａ～３Ｃは、図１中に破線で示すように、無線通信路を介して通信装置２と無線通信を行うことが可能である。なお、本実施の形態の例において、無線通信路の通信速度は有線通信路４の通信速度よりも大きい。 FIG. 1 is a diagram showing a simplified overall configuration of a communication system 1 according to an embodiment of the present invention. The communication system 1 is a system constructed in a user's house, for example, and includes a plurality of communication devices. In the example shown in FIG. 1, only four communication devices 2 and 3A to 3C are representatively shown for simplification of explanation. The communication devices 3A to 3C are connected to the communication device 2 via an arbitrary wired communication path 4 such as a power line, a wired LAN, or a coaxial line. Accordingly, the communication devices 3A to 3C can perform wired communication with the communication device 2 via the wired communication path 4. The communication devices 2 and 3A to 3C have an arbitrary wireless communication function such as a wireless LAN or short-range wireless communication. As a result, the communication devices 3A to 3C can perform wireless communication with the communication device 2 via the wireless communication path, as indicated by broken lines in FIG. In the example of the present embodiment, the communication speed of the wireless communication path is higher than the communication speed of the wired communication path 4.
　通信装置３Ａ～３Ｃは、例えば家電機器の消費電力量をそれぞれ測定し、その測定結果を含むデータを通信装置２に送信する。以下の説明において通信装置３Ａ～３Ｃを特に区別しない場合は、「通信装置３」と総称する。通信装置２は、複数の通信装置３から送信されたデータを受信する。そして、受信したデータに基づいて統計処理を行うことにより、ユーザの住宅における電力使用状況を分析し、その分析結果をモニタに表示すること等によってユーザに提供する。 The communication devices 3A to 3C measure, for example, the power consumption of each home appliance, and transmit data including the measurement results to the communication device 2. In the following description, the communication devices 3A to 3C are collectively referred to as “communication device 3” unless otherwise distinguished. The communication device 2 receives data transmitted from the plurality of communication devices 3. Then, by performing statistical processing based on the received data, the power usage situation in the user's house is analyzed, and the analysis result is displayed on the monitor and provided to the user.
　図２は、通信装置３に実装されている半導体集積回路１０の構成を簡略化して示す図である。図２に示すように半導体集積回路１０は、ＣＰＵ１１、データ制御部１２、無線通信部１３、及び有線通信部１４を備えて構成されている。データ制御部１２は、データ処理部２１及びデータ振分部２２を有している。 FIG. 2 is a diagram showing a simplified configuration of the semiconductor integrated circuit 10 mounted on the communication device 3. As shown in FIG. 2, the semiconductor integrated circuit 10 includes a CPU 11, a data control unit 12, a wireless communication unit 13, and a wired communication unit 14. The data control unit 12 includes a data processing unit 21 and a data distribution unit 22.
　ＣＰＵ１１は、通信装置３から通信装置２に送信すべき送信データＤ０を生成する。データ処理部２１は、ＣＰＵ１１から入力された送信データＤ０を処理することにより、データＤ１と、データＤ１に関連するデータＤ２とを生成し、互いに関連するデータＤ１，Ｄ２に対して固有の識別情報を付与する。データＤ１，Ｄ２の詳細については後述する。データ振分部２２は、データＤ１が無線通信部１３から送信され、データＤ２が有線通信部１４から送信されるよう、データＤ１，Ｄ２を振り分ける。無線通信部１３は、データ振分部２２から入力されたデータＤ１を、無線通信路を介して通信装置２に送信する。有線通信部１４は、データ振分部２２から入力されたデータＤ２を、有線通信路４を介して通信装置２に送信する。 The CPU 11 generates transmission data D0 to be transmitted from the communication device 3 to the communication device 2. The data processing unit 21 processes the transmission data D0 input from the CPU 11 to generate data D1 and data D2 related to the data D1, and unique identification information for the data D1 and D2 related to each other Is granted. Details of the data D1 and D2 will be described later. The data distribution unit 22 distributes the data D1 and D2 so that the data D1 is transmitted from the wireless communication unit 13 and the data D2 is transmitted from the wired communication unit 14. The wireless communication unit 13 transmits the data D1 input from the data distribution unit 22 to the communication device 2 via the wireless communication path. The wired communication unit 14 transmits the data D <b> 2 input from the data distribution unit 22 to the communication device 2 via the wired communication path 4.
　図３は、通信装置２に実装されている半導体集積回路３０の構成を簡略化して示す図である。図３に示すように半導体集積回路３０は、ＣＰＵ３１、データ制御部３２、無線通信部３３、及び有線通信部３４を備えて構成されている。データ制御部３２は、データ処理部４１及びデータ対応付け部４２を有している。 FIG. 3 is a diagram showing a simplified configuration of the semiconductor integrated circuit 30 mounted on the communication device 2. As shown in FIG. 3, the semiconductor integrated circuit 30 includes a CPU 31, a data control unit 32, a wireless communication unit 33, and a wired communication unit 34. The data control unit 32 includes a data processing unit 41 and a data association unit 42.
　無線通信部３３は、通信装置３から送信されたデータＤ１を受信する。有線通信部３４は、通信装置３から送信されたデータＤ２を受信する。データ対応付け部４２は、各データに付与されている識別情報に基づいて、無線通信部３３及び有線通信部３４から入力された複数のデータのうち、互いに関連するデータＤ１とデータＤ２とを対応付ける。データ処理部４１は、データ対応付け部４２から入力されたデータＤ１，Ｄ２に基づいて送信データＤ０を復元し、その復元した送信データＤ０をＣＰＵ３１に入力する。 The wireless communication unit 33 receives the data D1 transmitted from the communication device 3. The wired communication unit 34 receives the data D2 transmitted from the communication device 3. The data association unit 42 associates the data D1 and the data D2 that are related to each other out of the plurality of data input from the wireless communication unit 33 and the wired communication unit 34 based on the identification information given to each data. . The data processing unit 41 restores the transmission data D0 based on the data D1 and D2 input from the data association unit 42, and inputs the restored transmission data D0 to the CPU 31.
　図４は、データ処理部２１によるデータＤ１，Ｄ２の生成処理の第１の例を示す図である。まずデータ処理部２１は、送信データＤ０をＣＰＵ１１から入力する。次にデータ処理部２１は、所定の暗号鍵ＤＸを用いて送信データＤ０を暗号化することにより、暗号化データを生成する。次にデータ処理部２１は、暗号化データを含むデータＤ１を生成し、暗号鍵ＤＸを含むデータＤ２を生成する。ある送信データＤ０に関するデータＤ１とデータＤ２とは、同じ送信タイミングで通信装置３から通信装置２に送信してもよいし、送信タイミングを異ならせてもよい。送信タイミングを異ならせる場合には、例えば、あるデータＤ０に関するデータＤ１と次のデータＤ０に関するデータＤ２とを同じ送信タイミングで送信する。また、暗号鍵ＤＸは、所定数（一又は複数）の送信データＤ０毎に異ならせてもよいし、所定期間毎に異ならせてもよい。 FIG. 4 is a diagram illustrating a first example of data D1 and D2 generation processing by the data processing unit 21. First, the data processing unit 21 inputs transmission data D0 from the CPU 11. Next, the data processing unit 21 generates encrypted data by encrypting the transmission data D0 using a predetermined encryption key DX. Next, the data processing unit 21 generates data D1 including encrypted data, and generates data D2 including the encryption key DX. Data D1 and data D2 related to certain transmission data D0 may be transmitted from the communication device 3 to the communication device 2 at the same transmission timing, or may be transmitted at different timings. When the transmission timing is different, for example, data D1 related to a certain data D0 and data D2 related to the next data D0 are transmitted at the same transmission timing. Also, the encryption key DX may be different for each predetermined number (one or a plurality) of transmission data D0, or may be different for each predetermined period.
　図３を参照して、データ対応付け部４２は、互いに関連するデータＤ１，Ｄ２（つまり同一の送信データＤ０に関して生成されたデータＤ１，Ｄ２）を対応付ける。また、データ処理部４１は、データＤ２に含まれる暗号鍵ＤＸを用いて、データＤ１に含まれる暗号化データを復号することにより、暗号化される前の送信データＤ０を復元する。 3, the data association unit 42 associates data D1 and D2 that are related to each other (that is, data D1 and D2 generated with respect to the same transmission data D0). Further, the data processing unit 41 restores the transmission data D0 before being encrypted by decrypting the encrypted data included in the data D1 using the encryption key DX included in the data D2.
　図５は、データ処理部２１によるデータＤ１，Ｄ２の生成処理の第２の例を示す図である。まずデータ処理部２１は、送信データＤ０をＣＰＵ１１から入力する。次にデータ処理部２１は、送信データＤ０を任意のバイト長毎に分割することにより、複数の分割データＤ１Ａ～Ｄ１Ｈを生成する。次に、データ処理部２１は、分割データＤ１Ａ～Ｄ１Ｈを任意に並び替えることにより、並び替え後の分割データＤ１Ａ～Ｄ１Ｈを含むデータＤ１を生成する。また、データ処理部２１は、各分割データＤ１Ａ～Ｄ１Ｈのバイト長と並び替え後の配列順序とを示す処理手順情報ＤＹを作成し、その処理手順情報ＤＹを含むデータＤ２を生成する。第１の例と同様に、ある送信データＤ０に関するデータＤ１とデータＤ２とは、同じ送信タイミングで通信装置３から通信装置２に送信してもよいし、送信タイミングを異ならせてもよい。また、分割処理及び並び替え処理の処理手順は、所定数（一又は複数）の送信データＤ０毎に異ならせてもよいし、所定期間毎に異ならせてもよい。 FIG. 5 is a diagram illustrating a second example of the generation processing of the data D1 and D2 by the data processing unit 21. First, the data processing unit 21 inputs transmission data D0 from the CPU 11. Next, the data processing unit 21 generates a plurality of pieces of divided data D1A to D1H by dividing the transmission data D0 into arbitrary byte lengths. Next, the data processing unit 21 arbitrarily rearranges the divided data D1A to D1H to generate data D1 including the rearranged divided data D1A to D1H. Further, the data processing unit 21 creates processing procedure information DY indicating the byte length of each of the divided data D1A to D1H and the rearranged arrangement order, and generates data D2 including the processing procedure information DY. As in the first example, data D1 and data D2 related to certain transmission data D0 may be transmitted from the communication device 3 to the communication device 2 at the same transmission timing, or may be different in transmission timing. Further, the processing procedures of the division process and the rearrangement process may be different for each predetermined number (one or a plurality) of transmission data D0, or may be different for each predetermined period.
　図３を参照して、データ対応付け部４２は、互いに関連するデータＤ１，Ｄ２（つまり同一の送信データＤ０に関して生成されたデータＤ１，Ｄ２）を対応付ける。また、データ処理部４１は、データＤ２に含まれる処理手順情報ＤＹに基づいて、データＤ１に含まれる分割データＤ１Ａ～Ｄ１Ｈを元の配列順序に並び替えることにより、元の送信データＤ０を復元する。 3, the data association unit 42 associates data D1 and D2 that are related to each other (that is, data D1 and D2 generated with respect to the same transmission data D0). Further, the data processing unit 41 restores the original transmission data D0 by rearranging the divided data D1A to D1H included in the data D1 in the original arrangement order based on the processing procedure information DY included in the data D2. .
　図６は、データ処理部２１によるデータＤ１，Ｄ２の生成処理の第３の例を示す図である。まずデータ処理部２１は、送信データＤ０をＣＰＵ１１から入力する。次にデータ処理部２１は、予め規定された所定のバイト長毎に送信データＤ０を分割することにより、複数の分割データＤ１Ａ～Ｄ１Ｈを生成する。次に、データ処理部２１は、分割データＤ１Ａ～Ｄ１Ｈのうち、予め規定された所定の分割データを、予め規定された所定の順序に並び替えて配列することにより、複数の分割データ（図６の例では分割データＤ１Ｅ，Ｄ１Ｇ，Ｄ１Ｂ，Ｄ１Ｈ）を含むデータＤ１を生成する。また、データ処理部２１は、分割データＤ１Ａ～Ｄ１Ｈのうち、予め規定された所定の分割データを、予め規定された所定の順序に並び替えて配列することにより、複数の分割データ（図６の例では分割データＤ１Ａ，Ｄ１Ｆ，Ｄ１Ｄ，Ｄ１Ｃ）を含むデータＤ２を生成する。第１の例と同様に、ある送信データＤ０に関するデータＤ１とデータＤ２とは、同じ送信タイミングで通信装置３から通信装置２に送信してもよいし、送信タイミングを異ならせてもよい。また、分割処理及び並び替え処理の処理手順は、予め規定された規則に従って、所定数（一又は複数）の送信データＤ０毎に異ならせてもよいし、所定期間毎に異ならせてもよい。 FIG. 6 is a diagram illustrating a third example of the generation processing of the data D1 and D2 by the data processing unit 21. First, the data processing unit 21 inputs transmission data D0 from the CPU 11. Next, the data processing unit 21 generates a plurality of divided data D1A to D1H by dividing the transmission data D0 for each predetermined byte length defined in advance. Next, the data processing unit 21 rearranges predetermined division data defined in advance among the division data D1A to D1H in a predetermined order and arranges the plurality of division data (FIG. 6). In this example, data D1 including divided data D1E, D1G, D1B, D1H) is generated. In addition, the data processing unit 21 rearranges predetermined division data defined in advance among the division data D1A to D1H in a predetermined order, and arranges a plurality of pieces of division data (FIG. 6). In the example, data D2 including divided data D1A, D1F, D1D, and D1C) is generated. As in the first example, data D1 and data D2 related to certain transmission data D0 may be transmitted from the communication device 3 to the communication device 2 at the same transmission timing, or may be different in transmission timing. Further, the processing procedures of the dividing process and the rearranging process may be different for each predetermined number (one or a plurality) of transmission data D0 according to a predetermined rule, or may be different for each predetermined period.
　図３を参照して、データ対応付け部４２は、互いに関連するデータＤ１，Ｄ２（つまり同一の送信データＤ０に関して生成されたデータＤ１，Ｄ２）を対応付ける。また、データ処理部４１は、予め規定された所定の処理手順に従って、データＤ１，Ｄ２に含まれる分割データＤ１Ａ～Ｄ１Ｈを元の配列順序に並び替えることにより、元の送信データＤ０を復元する。 3, the data association unit 42 associates data D1 and D2 that are related to each other (that is, data D1 and D2 generated with respect to the same transmission data D0). In addition, the data processing unit 41 restores the original transmission data D0 by rearranging the divided data D1A to D1H included in the data D1 and D2 in the original arrangement order according to a predetermined processing procedure defined in advance.
　図７は、データ処理部２１によるデータＤ１，Ｄ２の生成処理の第４の例を示す図である。まずデータ処理部２１は、送信データＤ０をＣＰＵ１１から入力する。次にデータ処理部２１は、送信データＤ０を任意のバイト長毎に分割することにより、複数の分割データＤ１Ａ～Ｄ１Ｈを生成する。次に、データ処理部２１は、分割データＤ１Ａ～Ｄ１Ｈのうち、任意の分割データを任意の順序に並び替えて配列することにより、複数の分割データ（図７の例では分割データＤ１Ｅ，Ｄ１Ｇ，Ｄ１Ｂ，Ｄ１Ｈ）を含むデータＤ１を生成する。また、データ処理部２１は、分割データＤ１Ａ～Ｄ１Ｈのうち、任意の分割データを任意の順序に並び替えて配列することにより、複数の分割データ（図７の例では分割データＤ１Ａ，Ｄ１Ｆ，Ｄ１Ｄ，Ｄ１Ｃ）を含むデータＤ２を生成する。また、データ処理部２１は、各分割データＤ１Ａ～Ｄ１Ｈのバイト長と、データＤ１，Ｄ２における並び替え後の分割データの配列順序とを示す処理手順情報ＤＹを作成し、その処理手順情報ＤＹをデータＤ１内に含める。第１の例と同様に、ある送信データＤ０に関するデータＤ１とデータＤ２とは、同じ送信タイミングで通信装置３から通信装置２に送信してもよいし、送信タイミングを異ならせてもよい。また、分割処理及び並び替え処理の処理手順は、所定数（一又は複数）の送信データＤ０毎に異ならせてもよいし、所定期間毎に異ならせてもよい。 FIG. 7 is a diagram illustrating a fourth example of the data D1 and D2 generation processing by the data processing unit 21. First, the data processing unit 21 inputs transmission data D0 from the CPU 11. Next, the data processing unit 21 generates a plurality of pieces of divided data D1A to D1H by dividing the transmission data D0 into arbitrary byte lengths. Next, the data processing unit 21 rearranges and arranges arbitrary divided data among the divided data D1A to D1H in an arbitrary order, thereby arranging a plurality of divided data (the divided data D1E, D1G, Data D1 including D1B, D1H) is generated. Further, the data processing unit 21 rearranges and arranges arbitrary divided data among the divided data D1A to D1H in an arbitrary order, thereby arranging a plurality of divided data (the divided data D1A, D1F, D1D in the example of FIG. 7). , D1C). Further, the data processing unit 21 creates processing procedure information DY indicating the byte length of each of the divided data D1A to D1H and the arrangement order of the divided data after rearrangement in the data D1 and D2, and the processing procedure information DY is generated. Include in data D1. As in the first example, data D1 and data D2 related to certain transmission data D0 may be transmitted from the communication device 3 to the communication device 2 at the same transmission timing, or may be different in transmission timing. Further, the processing procedures of the division process and the rearrangement process may be different for each predetermined number (one or a plurality) of transmission data D0, or may be different for each predetermined period.
　図３を参照して、データ対応付け部４２は、互いに関連するデータＤ１，Ｄ２（つまり同一の送信データＤ０に関して生成されたデータＤ１，Ｄ２）を対応付ける。また、データ処理部４１は、データＤ１に含まれる処理手順情報ＤＹに基づいて、データＤ１，Ｄ２に含まれる分割データＤ１Ａ～Ｄ１Ｈを元の配列順序に並び替えることにより、元の送信データＤ０を復元する。 3, the data association unit 42 associates data D1 and D2 that are related to each other (that is, data D1 and D2 generated with respect to the same transmission data D0). The data processing unit 41 rearranges the original transmission data D0 by rearranging the divided data D1A to D1H included in the data D1 and D2 in the original arrangement order based on the processing procedure information DY included in the data D1. Restore.
　図８は、データ処理部２１によるデータＤ１，Ｄ２の生成処理の第５の例を示す図である。まずデータ処理部２１は、送信データＤ０をＣＰＵ１１から入力する。次にデータ処理部２１は、送信データＤ０のうち、予め規定された特定のビットデータＤ１Ｐ（例えば奇数ビットのデータ）を抽出することにより、当該特定のビットデータＤ１Ｐを含むデータＤ１を生成する。また、データ処理部２１は、送信データＤ０のうち、予め規定された特定のビットデータＤ１Ｑ（例えば偶数ビットのデータ）を抽出することにより、当該特定のビットデータＤ１Ｑを含むデータＤ２を生成する。第１の例と同様に、ある送信データＤ０に関するデータＤ１とデータＤ２とは、同じ送信タイミングで通信装置３から通信装置２に送信してもよいし、送信タイミングを異ならせてもよい。また、ビットデータの抽出処理の処理手順は、予め規定された規則に従って、所定数（一又は複数）の送信データＤ０毎に異ならせてもよいし、所定期間毎に異ならせてもよい。 FIG. 8 is a diagram illustrating a fifth example of the generation processing of the data D1 and D2 by the data processing unit 21. First, the data processing unit 21 inputs transmission data D0 from the CPU 11. Next, the data processing unit 21 extracts predetermined specific bit data D1P (for example, odd-bit data) from the transmission data D0, thereby generating data D1 including the specific bit data D1P. Further, the data processing unit 21 extracts specific bit data D1Q (for example, even-bit data) defined in advance from the transmission data D0, thereby generating data D2 including the specific bit data D1Q. As in the first example, data D1 and data D2 related to certain transmission data D0 may be transmitted from the communication device 3 to the communication device 2 at the same transmission timing, or may be different in transmission timing. Further, the processing procedure of the bit data extraction processing may be different for each predetermined number (one or a plurality) of transmission data D0 according to a predetermined rule, or may be different for each predetermined period.
　図３を参照して、データ対応付け部４２は、互いに関連するデータＤ１，Ｄ２（つまり同一の送信データＤ０に関して生成されたデータＤ１，Ｄ２）を対応付ける。また、データ処理部４１は、予め規定された所定の処理手順に従って、データＤ１，Ｄ２に含まれるビットデータＤ１Ｐ，Ｄ１Ｑを結合することにより、元の送信データＤ０を復元する。 3, the data association unit 42 associates data D1 and D2 that are related to each other (that is, data D1 and D2 generated with respect to the same transmission data D0). Further, the data processing unit 41 restores the original transmission data D0 by combining the bit data D1P and D1Q included in the data D1 and D2 according to a predetermined processing procedure defined in advance.
　図９は、データ処理部２１によるデータＤ１，Ｄ２の生成処理の第６の例を示す図である。まずデータ処理部２１は、送信データＤ０をＣＰＵ１１から入力する。次にデータ処理部２１は、送信データＤ０のうち、任意のビットに関するビットデータＤ１Ｐを抽出することにより、当該ビットデータＤ１Ｐを含むデータＤ１を生成する。また、データ処理部２１は、送信データＤ０のうち、残余のビットに関するビットデータＤ１Ｑを抽出することにより、当該ビットデータＤ１Ｑを含むデータＤ２を生成する。また、データ処理部２１は、データＤ１，Ｄ２におけるビットデータの抽出手順を示す処理手順情報ＤＺを作成し、その処理手順情報ＤＺをデータＤ１内に含める。第１の例と同様に、ある送信データＤ０に関するデータＤ１とデータＤ２とは、同じ送信タイミングで通信装置３から通信装置２に送信してもよいし、送信タイミングを異ならせてもよい。また、ビットデータの抽出処理の処理手順は、所定数（一又は複数）の送信データＤ０毎に異ならせてもよいし、所定期間毎に異ならせてもよい。 FIG. 9 is a diagram illustrating a sixth example of the generation processing of the data D1 and D2 by the data processing unit 21. First, the data processing unit 21 inputs transmission data D0 from the CPU 11. Next, the data processing unit 21 generates bit data D1P including the bit data D1P by extracting bit data D1P related to an arbitrary bit from the transmission data D0. Further, the data processing unit 21 extracts the bit data D1Q related to the remaining bits from the transmission data D0, thereby generating data D2 including the bit data D1Q. Further, the data processing unit 21 creates processing procedure information DZ indicating the extraction procedure of bit data in the data D1 and D2, and includes the processing procedure information DZ in the data D1. As in the first example, data D1 and data D2 related to certain transmission data D0 may be transmitted from the communication device 3 to the communication device 2 at the same transmission timing, or may be different in transmission timing. Further, the processing procedure of the bit data extraction processing may be different for each predetermined number (one or a plurality) of transmission data D0, or may be different for each predetermined period.
　図３を参照して、データ対応付け部４２は、互いに関連するデータＤ１，Ｄ２（つまり同一の送信データＤ０に関して生成されたデータＤ１，Ｄ２）を対応付ける。また、データ処理部４１は、データＤ１に含まれる処理手順情報ＤＺに基づいて、データＤ１，Ｄ２に含まれるビットデータＤ１Ｐ，Ｄ１Ｑを結合することにより、元の送信データＤ０を復元する。 3, the data association unit 42 associates data D1 and D2 that are related to each other (that is, data D1 and D2 generated with respect to the same transmission data D0). In addition, the data processing unit 41 reconstructs the original transmission data D0 by combining the bit data D1P and D1Q included in the data D1 and D2 based on the processing procedure information DZ included in the data D1.
　なお、上記第１～第６の例は、任意に組み合わせて適用することが可能である。例えば、送信データ毎に、あるいは所定期間毎に、あるいは通信装置２からコマンドが入力される毎に、あるいはランダムに、第１～第６の例を変更して適用することにより、通信の秘匿性をさらに向上することができる。 Note that the first to sixth examples can be applied in any combination. For example, by changing and applying the first to sixth examples every transmission data, every predetermined period, every time a command is input from the communication device 2, or at random, the confidentiality of communication Can be further improved.
　上記第１～第６の例では、主に通信の秘匿性を向上する観点から送信データＤ０をデータＤ１，Ｄ２に分割する例について述べたが、以下、第１～第６の例において通信の信頼性を向上するための手法について説明する。 In the first to sixth examples, the example in which the transmission data D0 is divided into the data D1 and D2 mainly from the viewpoint of improving the confidentiality of communication has been described. A method for improving reliability will be described.
　図１０は、データ処理部２１によるデータＤ１，Ｄ２の生成処理の第７の例を示す図である。まずデータ処理部２１は、送信データＤ０をＣＰＵ１１から入力する。次にデータ処理部２１は、予め規定された所定のバイト長毎に送信データＤ０を分割することにより、複数の分割データＤ１Ａ～Ｄ１Ｆを生成する。次に、データ処理部２１は、無線通信部１３からの無線通信に関する直近所定期間内の実効通信量（例えば通信成功率及び通信速度に基づいて決定される指標）と、有線通信部１４からの有線通信に関する直近所定期間内の実効通信量とに基づいて、分割データＤ１Ａ～Ｄ１ＦのうちデータＤ１，Ｄ２に振り分ける分割データの割合を決定する。例えば、無線通信の実効通信量が有線通信の実効通信量の２倍である場合には、データＤ１に振り分ける分割データの割合をデータＤ２に振り分ける分割データの割合の２倍に設定する。図１０の例では、分割データＤ１Ａ，Ｄ１Ｃ，Ｄ１Ｄ，Ｄ１ＦがデータＤ１に振り分けられ、分割データＤ１Ｂ，Ｄ１ＥがデータＤ２に振り分けられている。また、実効通信量が低い側の通信路を介した通信においては、各通信路に関する実効通信量の差に応じて、同一の分割データが複数回繰り返して送信される。図１０の例では、通信成功率の低い有線通信によって送信されるデータＤ２には、分割データＤ１Ｂ，Ｄ１Ｅがそれぞれ２個ずつ含まれている。 FIG. 10 is a diagram illustrating a seventh example of the generation processing of the data D1 and D2 by the data processing unit 21. First, the data processing unit 21 inputs transmission data D0 from the CPU 11. Next, the data processing unit 21 generates a plurality of divided data D1A to D1F by dividing the transmission data D0 for each predetermined byte length defined in advance. Next, the data processing unit 21 determines the effective communication amount (for example, an index determined based on the communication success rate and the communication speed) within the most recent predetermined period related to the wireless communication from the wireless communication unit 13, and the wired communication unit 14. Based on the effective communication amount in the most recent predetermined period related to wired communication, the ratio of the divided data to be distributed to the data D1 and D2 among the divided data D1A to D1F is determined. For example, when the effective communication amount of wireless communication is twice the effective communication amount of wired communication, the ratio of the divided data allocated to the data D1 is set to twice the ratio of the divided data allocated to the data D2. In the example of FIG. 10, the divided data D1A, D1C, D1D, and D1F are distributed to the data D1, and the divided data D1B and D1E are distributed to the data D2. Further, in communication via a communication channel with a lower effective communication amount, the same divided data is repeatedly transmitted a plurality of times according to the difference in effective communication amount for each communication channel. In the example of FIG. 10, data D2 transmitted by wired communication with a low communication success rate includes two pieces of divided data D1B and D1E, respectively.
　図１１は、データ処理部２１によるデータＤ１，Ｄ２の生成処理の第８の例を示す図である。まずデータ処理部２１は、送信データＤ０をＣＰＵ１１から入力する。次にデータ処理部２１は、予め規定された所定のバイト長毎に送信データＤ０を分割することにより、複数の分割データＤ１Ａ～Ｄ１Ｆを生成する。また、データ処理部２１は、各分割データＤ１Ａ～Ｄ１Ｆに関する通信エラーの検出及び訂正を行うためのエラー訂正コードＥＡ～ＥＦを生成する。次に、データ処理部２１は、分割データＤ１Ａ，Ｄ１Ｃ，Ｄ１ＥをデータＤ１に含めるとともに、エラー訂正コードＥＡ，ＥＣ，ＥＥをデータＤ２に含める。また、データ処理部２１は、分割データＤ１Ｂ，Ｄ１Ｄ，Ｄ１ＦをデータＤ２に含めるとともに、エラー訂正コードＥＢ，ＥＤ，ＥＦをデータＤ１に含める。図１１の例では、データＤ１においては分割データＤ１Ａ→エラー訂正コードＥＢ→分割データＤ１Ｃ→エラー訂正コードＥＤ→分割データＤ１Ｅ→エラー訂正コードＥＦの順に配列され、データＤ２においてはエラー訂正コードＥＡ→分割データＤ１Ｂ→エラー訂正コードＥＣ→分割データＤ１Ｄ→エラー訂正コードＥＥ→分割データＤ１Ｆの順に配列されている。 FIG. 11 is a diagram illustrating an eighth example of the generation processing of the data D1 and D2 by the data processing unit 21. First, the data processing unit 21 inputs transmission data D0 from the CPU 11. Next, the data processing unit 21 generates a plurality of divided data D1A to D1F by dividing the transmission data D0 for each predetermined byte length defined in advance. In addition, the data processing unit 21 generates error correction codes EA to EF for detecting and correcting communication errors related to the divided data D1A to D1F. Next, the data processing unit 21 includes the divided data D1A, D1C, and D1E in the data D1, and includes the error correction codes EA, EC, and EE in the data D2. Further, the data processing unit 21 includes the divided data D1B, D1D, and D1F in the data D2, and includes the error correction codes EB, ED, and EF in the data D1. In the example of FIG. 11, in the data D1, the divided data D1A → the error correction code EB → the divided data D1C → the error correction code ED → the divided data D1E → the error correction code EF is arranged, and in the data D2, the error correction code EA → The divided data D1B, the error correction code EC, the divided data D1D, the error correction code EE, and the divided data D1F are arranged in this order.
　図１２は、データ処理部２１によるデータＤ１，Ｄ２の生成処理の第９の例を示す図である。まずデータ処理部２１は、送信データＤ０をＣＰＵ１１から入力する。次にデータ処理部２１は、予め規定された所定のバイト長毎に送信データＤ０を分割することにより、複数の分割データＤ１Ａ～Ｄ１Ｆを生成する。データ処理部２１は、分割データＤ１Ａ，Ｄ１Ｃ，Ｄ１ＥをデータＤ１に含めるとともに、分割データＤ１Ｂ，Ｄ１Ｄ，Ｄ１ＦをデータＤ２に含める。また、データ処理部２１は、通信成功率の高い無線通信によって送信される分割データＤ１Ａ，Ｄ１Ｃ，Ｄ１Ｅに関しては、エラー訂正能力の低いエラー訂正コードＥＡｎ，ＥＣｎ，ＥＥｎ（例えば１ビット訂正用のエラー訂正コード）を生成し、これらのエラー訂正コードＥＡｎ，ＥＣｎ，ＥＥｎをデータＤ１に含める。一方、通信成功率の低い有線通信によって送信される分割データＤ１Ｂ，Ｄ１Ｄ，Ｄ１Ｆに関しては、エラー訂正能力の高いエラー訂正コードＥＢｈ，ＥＤｈ，ＥＦｈ（例えば８ビット訂正用のエラー訂正コード）を生成し、これらのエラー訂正コードＥＢｈ，ＥＤｈ，ＥＦｈをデータＤ２に含める。図１２の例では、データＤ１においては分割データＤ１Ａ→エラー訂正コードＥＡｎ→分割データＤ１Ｃ→エラー訂正コードＥＣｎ→分割データＤ１Ｅ→エラー訂正コードＥＥｎの順に配列され、データＤ２においては分割データＤ１Ｂ→エラー訂正コードＥＢｈ→分割データＤ１Ｄ→エラー訂正コードＥＤｈ→分割データＤ１Ｆ→エラー訂正コードＥＦｈの順に配列されている。 FIG. 12 is a diagram illustrating a ninth example of the generation processing of the data D1 and D2 by the data processing unit 21. First, the data processing unit 21 inputs transmission data D0 from the CPU 11. Next, the data processing unit 21 generates a plurality of divided data D1A to D1F by dividing the transmission data D0 for each predetermined byte length defined in advance. The data processing unit 21 includes the divided data D1A, D1C, and D1E in the data D1, and includes the divided data D1B, D1D, and D1F in the data D2. Further, the data processing unit 21 performs error correction codes EAn, ECn, EEn (for example, error for 1-bit correction) with low error correction capability for the divided data D1A, D1C, D1E transmitted by wireless communication with a high communication success rate. Correction code) is generated, and these error correction codes EAn, ECn, EEn are included in the data D1. On the other hand, for the divided data D1B, D1D, and D1F transmitted by wired communication with a low communication success rate, error correction codes EBh, EDh, and EFh (for example, error correction codes for 8-bit correction) with high error correction capability are generated. These error correction codes EBh, EDh, and EFh are included in the data D2. In the example of FIG. 12, in the data D1, the divided data D1A → the error correction code EAn → the divided data D1C → the error correction code ECn → the divided data D1E → the error correction code EEn are arranged in this order, and in the data D2, the divided data D1B → the error. The correction code EBh, the divided data D1D, the error correction code EDh, the divided data D1F, and the error correction code EFh are arranged in this order.
　図１３は、データ処理部２１によるデータＤ１，Ｄ２の生成処理の第１０の例を示す図である。まずデータ処理部２１は、送信データＤ０をＣＰＵ１１から入力する。次にデータ処理部２１は、予め規定された所定のバイト長毎に送信データＤ０を分割することにより、複数の分割データＤ１Ａ～Ｄ１Ｆを生成する。また、データ処理部２１は、各分割データＤ１Ａ～Ｄ１Ｆに関する通信エラーの検出及び訂正を行うためのエラー訂正コードＥＡ～ＥＦを生成する。次に、データ処理部２１は、分割データＤ１Ａ～Ｄ１ＦをデータＤ１に含めるとともに、エラー訂正コードＥＡ～ＥＦをデータＤ２に含める。エラー訂正コードのデータ量は分割データのデータ量よりも十分に小さいため、第１０の例は有線通信の実効通信量が無線通信の実効通信量より極端に低い場合等に有効である。なお、無線通信及び有線通信の各実効通信量に応じて、データの振り分けを調整することもできる。例えば、実効通信量の差が大きい場合には、エラー訂正コードＥＡ～ＥＦの一部をデータＤ１に含めてもよい。あるいは、実効通信量の差が小さい場合には、分割データＤ１Ａ～Ｄ１Ｆの一部をデータＤ２に含めてもよい。 FIG. 13 is a diagram illustrating a tenth example of data D1 and D2 generation processing by the data processing unit 21. First, the data processing unit 21 inputs transmission data D0 from the CPU 11. Next, the data processing unit 21 generates a plurality of divided data D1A to D1F by dividing the transmission data D0 for each predetermined byte length defined in advance. In addition, the data processing unit 21 generates error correction codes EA to EF for detecting and correcting communication errors related to the divided data D1A to D1F. Next, the data processing unit 21 includes the divided data D1A to D1F in the data D1 and includes the error correction codes EA to EF in the data D2. Since the data amount of the error correction code is sufficiently smaller than the data amount of the divided data, the tenth example is effective when the effective communication amount of wired communication is extremely lower than the effective communication amount of wireless communication. Note that data distribution can be adjusted according to the effective communication amount of wireless communication and wired communication. For example, when the difference in effective communication amount is large, part of the error correction codes EA to EF may be included in the data D1. Alternatively, when the difference in effective communication amount is small, a part of the divided data D1A to D1F may be included in the data D2.
　なお、上記第７～第１０の例は、任意に組み合わせて適用することが可能であり、複数の例を組み合わせることによって、通信の信頼性をさらに向上することができる。 Note that the seventh to tenth examples can be applied in any combination, and the reliability of communication can be further improved by combining a plurality of examples.
　本実施の形態に係る半導体集積回路１０によれば、データ処理部２１は、送信データＤ０を処理することにより、データＤ１（第１のデータ）と、データＤ１に関連するデータＤ２（第２のデータ）とを生成する。また、データ振分部２２は、データＤ１が無線通信部１３（第１の通信部）から無線通信路を介して通信装置２に送信され、データＤ２が有線通信部１４（第２の通信部）から有線通信路４を介して通信装置２に送信されるよう、データＤ１，Ｄ２を振り分ける。このように、無線通信路及び有線通信路４の一方又は双方に完全な送信データＤ０を送信するのではなく、送信データＤ０をデータＤ１とデータＤ２とに振り分けて、無線通信路を介してデータＤ１を送信し、有線通信路４を介してデータＤ２を送信する。その結果、データＤ１及びデータＤ２の一方のみを取得しても完全な送信データＤ０を復元できないため、通信の秘匿性を向上することが可能となる。 According to the semiconductor integrated circuit 10 according to the present embodiment, the data processing unit 21 processes the transmission data D0, whereby the data D1 (first data) and the data D2 (second data) related to the data D1 are processed. Data). Further, the data distribution unit 22 transmits the data D1 from the wireless communication unit 13 (first communication unit) to the communication device 2 via the wireless communication path, and the data D2 is transmitted to the wired communication unit 14 (second communication unit). The data D1 and D2 are distributed so as to be transmitted to the communication device 2 via the wired communication path 4. As described above, instead of transmitting the complete transmission data D0 to one or both of the wireless communication path and the wired communication path 4, the transmission data D0 is divided into the data D1 and the data D2, and the data is transmitted via the wireless communication path. D1 is transmitted, and data D2 is transmitted via the wired communication path 4. As a result, even if only one of the data D1 and the data D2 is acquired, the complete transmission data D0 cannot be restored, so that the confidentiality of communication can be improved.
　また、本実施の形態に係る半導体集積回路３０によれば、無線通信部３３（第１の通信部）はデータＤ１を通信装置３から受信し、有線通信部３４（第２の通信部）はデータＤ２を通信装置３から受信する。また、データ対応付け部４２は、互いに関連するデータＤ１とデータＤ２とを対応付ける。そして、データ処理部４１は、データ対応付け部４２によって対応付けられたデータＤ１とデータＤ２とに基づいて、通信装置３から通信装置２に送信された送信データＤ０を復元する。このように、無線通信路及び有線通信路４の一方又は双方に完全な送信データＤ０を送信するのではなく、送信データＤ０をデータＤ１とデータＤ２とに振り分けて、無線通信路を介してデータＤ１を送信し、有線通信路４を介してデータＤ２を送信する。その結果、データＤ１及びデータＤ２の一方のみを取得しても完全な送信データＤ０を復元できないため、通信の秘匿性を向上することが可能となる。 Further, according to the semiconductor integrated circuit 30 according to the present embodiment, the wireless communication unit 33 (first communication unit) receives the data D1 from the communication device 3, and the wired communication unit 34 (second communication unit) Data D2 is received from the communication device 3. The data association unit 42 associates data D1 and data D2 that are related to each other. Then, the data processing unit 41 restores the transmission data D0 transmitted from the communication device 3 to the communication device 2 based on the data D1 and the data D2 associated by the data association unit 42. As described above, instead of transmitting the complete transmission data D0 to one or both of the wireless communication path and the wired communication path 4, the transmission data D0 is divided into the data D1 and the data D2, and the data is transmitted via the wireless communication path. D1 is transmitted, and data D2 is transmitted via the wired communication path 4. As a result, even if only one of the data D1 and the data D2 is acquired, the complete transmission data D0 cannot be restored, so that the confidentiality of communication can be improved.
　また、図４に示した第１の例によれば、データＤ１は、送信データＤ０を暗号化することによって生成された暗号化データを含み、データＤ２は、暗号化データの復号に用いる暗号鍵ＤＸを含む。このように、暗号化データと暗号鍵ＤＸとを異なる通信路を介して送信することにより、通信の秘匿性を向上することが可能となる。 Further, according to the first example shown in FIG. 4, the data D1 includes encrypted data generated by encrypting the transmission data D0, and the data D2 is an encryption key used for decrypting the encrypted data. Includes DX. Thus, by transmitting the encrypted data and the encryption key DX via different communication paths, it is possible to improve the confidentiality of communication.
　また、図５に示した第２の例によれば、データＤ１は、送信データＤ０に対して所定の分割処理及び並び替え処理が行われた複数の分割データＤ１Ａ～Ｄ１Ｈを含み、データＤ２は、分割処理及び並び替え処理の手順に関する処理手順情報ＤＹを含む。このように、分割データＤ１Ａ～Ｄ１Ｈと処理手順情報ＤＹとを異なる通信路を介して送信することにより、通信の秘匿性を向上することが可能となる。 Further, according to the second example shown in FIG. 5, the data D1 includes a plurality of divided data D1A to D1H obtained by performing predetermined division processing and rearrangement processing on the transmission data D0. , Including process procedure information DY regarding the procedure of the division process and the rearrangement process. In this way, by transmitting the divided data D1A to D1H and the processing procedure information DY via different communication paths, it is possible to improve the confidentiality of communication.
　また、図６に示した第３の例によれば、データＤ１は、送信データＤ０に対して所定の分割処理及び並び替え処理が行われた複数の分割データＤ１Ａ～Ｄ１Ｈのうちの第１群の分割データを含み、データＤ２は、複数の分割データＤ１Ａ～Ｄ１Ｈのうちの第２群の分割データを含む。このように、第１群の分割データと第２群の分割データとを異なる通信路を介して送信することにより、通信の秘匿性を向上することが可能となる。 Further, according to the third example shown in FIG. 6, the data D1 is a first group of a plurality of pieces of divided data D1A to D1H obtained by performing predetermined division processing and rearrangement processing on the transmission data D0. The data D2 includes the second group of divided data among the plurality of divided data D1A to D1H. Thus, by transmitting the first group of divided data and the second group of divided data via different communication paths, it is possible to improve the confidentiality of communication.
　また、図７に示した第４の例によれば、データＤ１は、送信データＤ０に対して所定の分割処理及び並び替え処理が行われた複数の分割データＤ１Ａ～Ｄ１Ｈのうちの第１群の分割データと、処理手順情報ＤＹとを含み、データＤ２は、複数の分割データＤ１Ａ～Ｄ１Ｈのうちの第２群の分割データを含む。このように、第１群の分割データ及び処理手順情報ＤＹと、第２群の分割データとを異なる通信路を介して送信することにより、通信の秘匿性を向上することが可能となる。 Further, according to the fourth example shown in FIG. 7, the data D1 is a first group of a plurality of divided data D1A to D1H obtained by performing predetermined division processing and rearrangement processing on the transmission data D0. The divided data and the processing procedure information DY, and the data D2 includes the second group of divided data among the plurality of divided data D1A to D1H. As described above, by transmitting the first group of divided data and the processing procedure information DY and the second group of divided data via different communication paths, it is possible to improve the confidentiality of communication.
　また、図８に示した第５の例によれば、データＤ１は、送信データＤ０のうちの特定のビットのデータを抽出した第１群のビットデータを含み、データＤ２は、送信データＤ０のうちの他の特定のビットのデータを抽出した第２群のビットデータを含む。このように、第１群のビットデータと第２群のビットデータとを異なる通信路を介して送信することにより、通信の秘匿性を向上することが可能となる。 Further, according to the fifth example shown in FIG. 8, the data D1 includes a first group of bit data obtained by extracting data of a specific bit from the transmission data D0, and the data D2 includes the transmission data D0. A second group of bit data obtained by extracting data of other specific bits is included. Thus, by transmitting the first group of bit data and the second group of bit data via different communication paths, it is possible to improve the confidentiality of communication.
　また、図９に示した第６の例によれば、データＤ１は、送信データＤ０のうちの特定のビットのデータを抽出した第１群のビットデータと、処理手順情報ＤＺとを含み、データＤ２は、送信データＤ０のうちの他の特定のビットのデータを抽出した第２群のビットデータを含む。このように、第１群のビットデータ及び処理手順情報ＤＺと、第２群のビットデータとを異なる通信路を介して送信することにより、通信の秘匿性を向上することが可能となる。 Further, according to the sixth example shown in FIG. 9, the data D1 includes the first group of bit data obtained by extracting data of a specific bit from the transmission data D0, and the processing procedure information DZ. D2 includes a second group of bit data obtained by extracting data of other specific bits from the transmission data D0. As described above, by transmitting the first group of bit data and the processing procedure information DZ and the second group of bit data via different communication paths, it is possible to improve the confidentiality of communication.
　また、図１０に示した第７の例によれば、送信データＤ０は、無線通信路及び有線通信路４の実効通信量に基づいて、データＤ１とデータＤ２とに振り分けられる。その結果、実効通信量の高い通信路に多くのデータを振り分けることにより、通信の信頼性を向上することが可能となる。 Further, according to the seventh example shown in FIG. 10, the transmission data D0 is distributed into data D1 and data D2 based on the effective communication amount of the wireless communication path and the wired communication path 4. As a result, it is possible to improve communication reliability by allocating a large amount of data to a communication path with a high effective communication amount.
　また、図１１に示した第８の例によれば、データＤ１はデータＤ２のエラー訂正コードを含み、データＤ２はデータＤ１のエラー訂正コードを含む。このように、エラー訂正コードを送信することにより、通信の信頼性を向上することが可能となる。また、データＤ１のエラー訂正コードをデータＤ２に含め、データＤ２のエラー訂正コードをデータＤ１に含めることにより、通信の秘匿性を向上することが可能となる。 Further, according to the eighth example shown in FIG. 11, the data D1 includes the error correction code of the data D2, and the data D2 includes the error correction code of the data D1. Thus, by transmitting the error correction code, it becomes possible to improve the reliability of communication. Further, by including the error correction code of the data D1 in the data D2 and including the error correction code of the data D2 in the data D1, it is possible to improve the confidentiality of communication.
　また、図１２に示した第９の例によれば、無線通信路の通信成功率が有線通信路４の通信成功率より高い場合、データＤ２には、データＤ１に付加されるエラー訂正コードよりもエラー訂正能力の高いエラー訂正コードが付加される。このように、通信成功率の低い有線通信路４を介して送信されるデータＤ２には、エラー訂正能力の高い訂正コードを付加することにより、通信の信頼性を向上することが可能となる。 Further, according to the ninth example shown in FIG. 12, when the communication success rate of the wireless communication path is higher than the communication success rate of the wired communication path 4, the data D2 has an error correction code added to the data D1. In addition, an error correction code having a high error correction capability is added. As described above, it is possible to improve the reliability of communication by adding a correction code having a high error correction capability to the data D2 transmitted via the wired communication path 4 having a low communication success rate.
　また、図１３に示した第１０の例によれば、データＤ１は送信データを含み、データＤ２は送信データのエラー訂正コードを含む。このように、エラー訂正コードを送信することにより、通信の信頼性を向上することが可能となる。また、送信データとエラー訂正コードとを異なる通信路を介して送信することにより、通信の秘匿性を向上することが可能となる。 Further, according to the tenth example shown in FIG. 13, the data D1 includes transmission data, and the data D2 includes an error correction code of the transmission data. Thus, by transmitting the error correction code, it is possible to improve the reliability of communication. Moreover, it is possible to improve the confidentiality of communication by transmitting the transmission data and the error correction code via different communication paths.
　この発明は詳細に説明されたが、上記した説明は、すべての局面において、例示的であって、この発明がそれに限定されるものではない。例示されていない無数の変形例が、この発明の範囲から外れることなく想定され得るものと解される。 Although the present invention has been described in detail, the above description is illustrative in all aspects, and the present invention is not limited thereto. It is understood that countless variations that are not illustrated can be envisaged without departing from the scope of the present invention.
　１　通信システム
　２，３Ａ～３Ｃ　通信装置
　１０，３０　半導体集積回路
　１２，３２　データ制御部
　１３，３３　無線通信部
　１４，３４　有線通信部
　２１，４１　データ処理部
　２２　データ振分部
　４２　データ対応付け部
 
  DESCRIPTION OF SYMBOLS 1 Communication system 2,3A- 3C Communication apparatus 10,30 Semiconductor integrated circuit 12,32 Data control part 13,33 Wireless communication part 14,34 Wired communication part 21,41 Data processing part 22 Data distribution part 42 Data matching part

Claims (16)

  1. 　通信装置と他の通信装置とが複数の通信路を介して通信する通信システムにおいて、前記通信装置に実装される半導体集積回路であって、
    　第１の通信路を介して前記他の通信装置と通信する第１の通信部と、
    　第２の通信路を介して前記他の通信装置と通信する第２の通信部と、
    　前記通信装置から前記他の通信装置に送信すべき送信データを制御するデータ制御部と、
    を備え、
    　前記データ制御部は、
    　前記送信データを処理することにより、第１のデータと、当該第１のデータに関連する第２のデータとを生成するデータ処理部と、
    　前記第１のデータが前記第１の通信部から前記他の通信装置に送信され、前記第２のデータが前記第２の通信部から前記他の通信装置に送信されるよう、データを振り分けるデータ振分部と、
    を有する、半導体集積回路。     In a communication system in which a communication device and another communication device communicate via a plurality of communication paths, a semiconductor integrated circuit mounted on the communication device,
    A first communication unit that communicates with the other communication device via a first communication path;
    A second communication unit that communicates with the other communication device via a second communication path;
    A data control unit that controls transmission data to be transmitted from the communication device to the other communication device;
    With
    The data control unit
    A data processing unit that generates first data and second data related to the first data by processing the transmission data;
    Data for distributing data so that the first data is transmitted from the first communication unit to the other communication device, and the second data is transmitted from the second communication unit to the other communication device. A distribution section;
    A semiconductor integrated circuit.
  2. 　通信装置と他の通信装置とが複数の通信路を介して通信する通信システムにおいて、前記他の通信装置に実装される半導体集積回路であって、
    　第１の通信路を介して前記通信装置と通信する第１の通信部と、
    　第２の通信路を介して前記通信装置と通信する第２の通信部と、
    　前記通信装置から受信した受信データを制御するデータ制御部と、
    を備え、
    　前記第１の通信部は、第１のデータを前記通信装置から受信し、
    　前記第２の通信部は、第２のデータを前記通信装置から受信し、
    　前記データ制御部は、
    　互いに関連する前記第１のデータと前記第２のデータとを対応付けるデータ対応付け部と、
    　前記データ対応付け部によって対応付けられた前記第１のデータと前記第２のデータとに基づいて、前記通信装置から前記他の通信装置に送信された送信データを復元するデータ処理部と、
    を有する、半導体集積回路。     In a communication system in which a communication device communicates with another communication device via a plurality of communication paths, a semiconductor integrated circuit mounted on the other communication device,
    A first communication unit that communicates with the communication device via a first communication path;
    A second communication unit that communicates with the communication device via a second communication path;
    A data control unit for controlling received data received from the communication device;
    With
    The first communication unit receives first data from the communication device,
    The second communication unit receives second data from the communication device,
    The data control unit
    A data association unit that associates the first data and the second data associated with each other;
    A data processing unit for restoring transmission data transmitted from the communication device to the other communication device based on the first data and the second data associated by the data association unit;
    A semiconductor integrated circuit.
  3. 　前記第１のデータは、前記送信データを暗号化することによって生成された暗号化データを含み、
    　前記第２のデータは、前記暗号化データの復号に用いる暗号鍵を含む、請求項１又は２に記載の半導体集積回路。     The first data includes encrypted data generated by encrypting the transmission data,
    The semiconductor integrated circuit according to claim 1, wherein the second data includes an encryption key used for decrypting the encrypted data.
  4. 　前記第１のデータは、前記送信データに対して所定の分割処理及び並び替え処理が行われた複数の分割データを含み、
    　前記第２のデータは、前記分割処理及び前記並び替え処理の手順に関する情報を含む、請求項１又は２に記載の半導体集積回路。     The first data includes a plurality of divided data obtained by performing predetermined division processing and rearrangement processing on the transmission data,
    3. The semiconductor integrated circuit according to claim 1, wherein the second data includes information relating to a procedure of the division process and the rearrangement process.
  5. 　前記第１のデータは、前記送信データに対して所定の分割処理及び並び替え処理が行われた複数の分割データのうちの第１群の分割データを含み、
    　前記第２のデータは、前記複数の分割データのうちの第２群の分割データを含む、請求項１又は２に記載の半導体集積回路。     The first data includes a first group of divided data among a plurality of divided data obtained by performing predetermined division processing and rearrangement processing on the transmission data;
    The semiconductor integrated circuit according to claim 1, wherein the second data includes a second group of divided data among the plurality of divided data.
  6. 　前記第１のデータは、前記送信データに対して所定の分割処理及び並び替え処理が行われた複数の分割データのうちの第１群の分割データと、前記分割処理及び前記並び替え処理の手順に関する情報とを含み、
    　前記第２のデータは、前記複数の分割データのうちの第２群の分割データを含む、請求項１又は２に記載の半導体集積回路。     The first data includes a first group of divided data among a plurality of pieces of divided data obtained by performing predetermined division processing and rearrangement processing on the transmission data, and a procedure of the division processing and rearrangement processing. And information about
    The semiconductor integrated circuit according to claim 1, wherein the second data includes a second group of divided data among the plurality of divided data.
  7. 　前記第１のデータは、前記送信データのうちの特定のビットのデータを抽出した第１群のビットデータを含み、
    　前記第２のデータは、前記送信データのうちの他の特定のビットのデータを抽出した第２群のビットデータを含む、請求項１又は２に記載の半導体集積回路。     The first data includes a first group of bit data obtained by extracting data of specific bits of the transmission data,
    The semiconductor integrated circuit according to claim 1, wherein the second data includes a second group of bit data obtained by extracting data of other specific bits of the transmission data.
  8. 　前記第１のデータは、前記送信データのうちの特定のビットのデータを抽出した第１群のビットデータと、ビット抽出の手順に関する情報とを含み、
    　前記第２のデータは、前記送信データのうちの他の特定のビットのデータを抽出した第２群のビットデータを含む、請求項１又は２に記載の半導体集積回路。     The first data includes a first group of bit data obtained by extracting data of specific bits of the transmission data, and information regarding a bit extraction procedure,
    The semiconductor integrated circuit according to claim 1, wherein the second data includes a second group of bit data obtained by extracting data of other specific bits of the transmission data.
  9. 　前記送信データは、前記第１の通信路及び前記第２の通信路の実効通信量に基づいて、前記第１のデータと前記第２のデータとに振り分けられる、請求項１～８のいずれか一つに記載の半導体集積回路。 9. The transmission data according to claim 1, wherein the transmission data is distributed to the first data and the second data based on an effective communication amount of the first communication path and the second communication path. The semiconductor integrated circuit according to one.
  10. 　前記第１のデータは、前記第２のデータのエラー訂正コードを含み、
    　前記第２のデータは、前記第１のデータのエラー訂正コードを含む、請求項１～８のいずれか一つに記載の半導体集積回路。     The first data includes an error correction code of the second data,
    The semiconductor integrated circuit according to any one of claims 1 to 8, wherein the second data includes an error correction code of the first data.
  11. 　前記第１の通信路の通信成功率が前記第２の通信路の通信成功率より高い場合、前記第２のデータには、前記第１のデータに付加されるエラー訂正コードよりもエラー訂正能力の高いエラー訂正コードが付加される、請求項１～８のいずれか一つに記載の半導体集積回路。 When the communication success rate of the first communication path is higher than the communication success rate of the second communication path, the second data has an error correction capability higher than an error correction code added to the first data. 9. The semiconductor integrated circuit according to claim 1, wherein a high error correction code is added.
  12. 　前記第１のデータは、前記送信データを含み、
    　前記第２のデータは、前記送信データのエラー訂正コードを含む、請求項１～８のいずれか一つに記載の半導体集積回路。     The first data includes the transmission data,
    The semiconductor integrated circuit according to any one of claims 1 to 8, wherein the second data includes an error correction code of the transmission data.
  13. 　請求項１に記載の半導体集積回路を備える、通信装置。 A communication apparatus comprising the semiconductor integrated circuit according to claim 1.
  14. 　請求項２に記載の半導体集積回路を備える、通信装置。 A communication device comprising the semiconductor integrated circuit according to claim 2.
  15. 　請求項１３に記載の通信装置と、請求項１４に記載の通信装置とを備える、通信システム。 A communication system comprising the communication device according to claim 13 and the communication device according to claim 14.
  16. 　第１の通信装置と第２の通信装置とが複数の通信路を介して通信する通信システムにおける通信方法であって、
    　（Ａ）前記第１の通信装置において、前記第１の通信装置から前記第２の通信装置に送信すべき送信データを処理することにより、第１のデータと、当該第１のデータに関連する第２のデータとを生成するステップと、
    　（Ｂ）前記第１の通信装置において、前記第１のデータが第１の通信路を介して前記他の通信装置に送信され、前記第２のデータが第２の通信路を介して前記第２の通信装置に送信されるよう、データを振り分けるステップと、
    　（Ｃ）前記第２の通信装置において、前記第１の通信路を介して前記第１のデータを受信し、前記第２の通信路を介して前記第２のデータを受信するステップと、
    　（Ｄ）前記第２の通信装置において、互いに関連する前記第１のデータと前記第２のデータとを対応付けるステップと、
    　（Ｅ）前記ステップ（Ｄ）によって対応付けられた前記第１のデータと前記第２のデータとに基づいて、前記送信データを復元するステップと、
    を備える、通信方法。
          A communication method in a communication system in which a first communication device and a second communication device communicate via a plurality of communication paths,
    (A) In the first communication device, by processing transmission data to be transmitted from the first communication device to the second communication device, the first data and the first data are related. Generating second data; and
    (B) In the first communication device, the first data is transmitted to the other communication device via a first communication path, and the second data is transmitted to the other communication device via a second communication path. Distributing the data to be transmitted to the two communication devices;
    (C) In the second communication device, receiving the first data via the first communication path and receiving the second data via the second communication path;
    (D) in the second communication device, associating the first data and the second data associated with each other;
    (E) restoring the transmission data based on the first data and the second data associated in the step (D);
    A communication method comprising:
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