Communication device, communication system, communication program, and communication control method

Patent metadata

Field	Value
Publication number	US-10762787-B2
Application number	US-201716311246-A
Country	US
Kind code	B2
Filing date	May 1, 2017
Priority date	Jun 30, 2016
Publication date	Sep 1, 2020
Grant date	Sep 1, 2020

Abstract

Provided is a communication apparatus installed in a vehicle, the communication apparatus including: an acquisition unit configured to acquire, via a network installed in the vehicle, a plurality of types of status information each indicating a status of the vehicle; an information creation unit configured to create, on the basis of each piece of the status information acquired by the acquisition unit, feature information having a data amount smaller than a total of data amounts of the respective pieces of the status information, the feature information including a feature amount of a traveling status of the vehicle; and a transmission unit configured to transmit vehicle information based on the feature information created by the information creation unit, to another communication apparatus.

First claim

The invention claimed is:

1. An on-vehicle device installed in a vehicle, the on-vehicle device comprising:
a non-transitory computer readable memory; and
a hardware processor coupled to the non-transitory computer readable memory and configured to read instructions from the non-transitory computer readable memory to cause the on-vehicle device to perform operations comprising:
acquiring, via a network installed in the vehicle, a plurality of types of status information each indicating a status of the vehicle; and
creating, on the basis of each piece of the acquired status information, feature information having a data amount smaller than a total of data amounts of the respective pieces of the status information, the feature information including a feature amount of a traveling status of the vehicle, wherein

the creating operation includes:
generating, based on the respective pieces of the status information, intermediate data having a data amount smaller than the total of data amounts of the respective pieces of the status information;
generating, based on the intermediate data, the feature amount having a data amount smaller than the data amount of the intermediate data; and
determining which of a plurality of numerical value ranges the feature amount belongs to, and acquiring, as the feature information, a flag value indicating a traveling status of the vehicle corresponding to the numerical value range to which the feature amount belongs, and

the feature information is used to create vehicle information to be transmitted to another vehicle.

2. The on-vehicle device according to claim 1 , wherein
the feature information includes the feature amount of a smaller number of types than the number of types of the respective pieces of the status information.

3. The on-vehicle device according to claim 1 , wherein
the creating operation comprises creating the feature information by use of a calculation method capable of converting K types of information into less than K types of feature amount, where K is an integer not smaller than 2.

4. The on-vehicle device according to claim 1 , wherein
the vehicle information is the feature information, and
the on-vehicle device further comprises a storing unit configured to store correspondence information indicating a correspondence relationship between a numeral value range of the feature amount and a traveling status of the vehicle, and
the correspondence information is transmitted to the other vehicle.

5. The on-vehicle device according to claim 4 , wherein
the correspondence information is different for each type of the vehicle.

6. An on-vehicle device installed in a vehicle, the on-vehicle device comprising:
a non-transitory computer readable memory; and
a hardware processor coupled to the non-transitory computer readable memory and configured to read instructions from the non-transitory computer readable memory to cause the on-vehicle device to perform operations comprising:
receiving feature information having a data amount smaller than a total of data amounts of a plurality of types of status information each indicating a status of the vehicle, the feature information including a feature amount of a traveling status of the vehicle, and correspondence information indicating a correspondence relationship between a numeral value range of the feature amount and a traveling status of the vehicle; and
determining a traveling status of the vehicle on the basis of the feature information and the correspondence information that have been received, wherein

the feature information is a flag value indicating the traveling status of the vehicle corresponding to the numerical value range to which the feature amount belongs,
the feature information is generated based on an intermediate data and has a data amount smaller than that of the intermediate data, and
the intermediate data is generated based on the respective pieces of the status information and has a data amount smaller than the total of data amounts of the respective pieces of the status information.

7. A communication system comprising:
a first communication apparatus installed in a vehicle; and
a second communication apparatus wherein
the first communication apparatus comprises:
a first non-transitory computer readable memory; and
a first hardware processor coupled to the first non-transitory computer readable memory and configured to read instructions from the first non-transitory computer readable memory to cause the first communication apparatus to perform operations comprising:
generating, based on a plurality of types of status information each indicating a status of the vehicle, intermediate data having a data amount smaller than a total of data amounts of the respective pieces of the status information;
generating, based on the intermediate data, the feature amount of a traveling status of the vehicle having a data amount smaller than the data amount of the intermediate data;
determining which of a plurality of numerical value ranges the feature amount belongs to, and acquiring, as feature information of the traveling status of the vehicle, a flag value indicating a traveling status of the vehicle corresponding to the numerical value range to which the feature amount belongs; and
transmitting vehicle information based on the feature information, and

the second communication apparatus comprises:
a second non-transitory computer readable memory; and
a second hardware processor coupled to the second non-transitory computer readable memory and configured to read instructions from the second non-transitory computer readable memory to cause the second communication apparatus to perform operations comprising receiving the vehicle information transmitted by the first communication apparatus.

8. A non-transitory computer readable storage medium storing a computer program to be used in an on-vehicle device installed in a vehicle, the on-vehicle device comprising a hardware processor configured to execute the computer program to cause the on-vehicle device to perform operations comprising:
acquiring, via a network installed in the vehicle, a plurality of types of status information each indicating a status of the vehicle; and
creating, on the basis of each piece of the acquired status information, feature information having a data amount smaller than a total of data amounts of the respective pieces of the status information, the feature information including a feature amount of a traveling status of the vehicle, wherein
the creating operation includes:
generating, based on the respective pieces of the status information, intermediate data having a data amount smaller than the total of data amounts of the respective pieces of the status information;
generating, based on the intermediate data, the feature amount having a data amount smaller than the data amount of the intermediate data; and
determining which of a plurality of numerical value ranges the feature amount belongs to, and acquiring, as the feature information, a flag value indicating a traveling status of the vehicle corresponding to the numerical value range to which the feature amount belongs, and

the feature information is used to create vehicle information to be transmitted to another vehicle.

9. A non-transitory computer readable storage medium storing a computer program to be used in an on-vehicle device installed in a vehicle, the on-vehicle device comprising a hardware processor configured to execute the computer program to cause the on-vehicle device to perform operations comprising:
receiving feature information having a data amount smaller than a total of data amounts of a plurality of types of status information each ind

Assignees

• Sumitomo Electric Industries

Inventors

• Hayakawa Jun
• Suwa Akira
• Takeshima Susumu

Classifications

• G08G1/09

  Arrangements for giving variable traffic instructions ({railroad crossing signals B61L; reflectors E01F, G08B}; indicating arrangements for variable information by selection or combination of individual elements G09F9/00) · CPC title

• G08G1/16

  Anti-collision systems (road vehicle drive control systems for predicting or avoiding probable or impending collision otherwise than by control of a particular sub-unit B60W30/08) · CPC title

• G08G1/0133

  for classifying traffic situation · CPC title

• G08G1/0112 Primary

  from the vehicle, e.g. floating car data [FCD] · CPC title

• G07C5/008

  communicating information to a remotely located station (transmission systems for measured values G08C) · CPC title