# US 2021/0345106 A1 · Communication control device and communication control system > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2021/0345106 A1 - Document ID: US20210345106A1 - Status: Published application - Kind: A1 - Application number: 17/305,953 - Filed: 2021-07-19 - Published: 2021-11-04 - Earliest claimed: 2019-01-25 - Assignees: Kabushiki Kaisha Toshiba; Toshiba Infrastructure Systems & Solutions Corporation - Applicants: Kabushiki Kaisha Toshiba; Toshiba Infrastructure Systems & Solutions Corporation - Inventors: Issei HATANAKA; Keita TANIGUCHI; Yuto MISAWA - Web page: https://patentgrep.com/patent/US20210345106A1 ## CPC - G06F 21/445: {by mutual authentication, e.g. between devices or programs} - H04W 12/06: Authentication - G06F 21/316: {by observing the pattern of computer usage, e.g. typical user behaviour} - G06F 21/554: {involving event detection and direct action} - G06F 21/629: {to features or functions of an application} - H04L 63/0281: {Proxies} - H04L 63/0823: {using certificates (cryptographic mechanisms or cryptographic arrangements for entity authentication involving certificates H04L9/3263)} - H04L 63/0869: {for achieving mutual authentication (cryptographic mechanisms or cryptographic arrangements for mutual authentication H04L9/3273)} - H04L 63/1416: {Event detection, e.g. attack signature detection} - H04W 12/12: Detection or prevention of fraud - H04W 24/00: Supervisory, monitoring or testing arrangements - H04L 63/0435: {wherein the sending and receiving network entities apply symmetric encryption, i.e. same key used for encryption and decryption (cryptographic mechanisms or cryptographic arrangements for symmetric key encryption H04L9/06)} - H04L 63/083: {using passwords (cryptographic mechanisms or cryptographic arrangements for entity authentication using a predetermined code H04L9/3226)} - H04W 4/38: for collecting sensor information - G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N) - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) - H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M) ## Abstract A communication control device according to an embodiment includes a communication unit and a notification unit. The communication unit is configured to communicate with a first device and a second device, wirelessly communicate with at least one of the first device and the second device, and transmit data acquired by the first device to the second device. The notification unit is configured to cause the communication unit to transmit predetermined information to the second device when a state of communication with the first device is a predetermined state or behavior of the communication control device is predetermined behavior. ## Claims ### Claim 1 A communication control device, comprising: a communication unit configured to: communicate with a first device and a second device; wirelessly communicate with at least one of the first device and the second device; and transmit data acquired by the first device to the second device; and a notification unit configured to cause the communication unit to transmit predetermined information to the second device when a state of communication with the first device is a predetermined state or behavior of the communication control device is predetermined behavior. ### Claim 2 (depends on 1) The communication control device according to claim 1, wherein the notification unit is configured to cause the communication unit to transmit the predetermined information to the second device by determining that the state of communication with the first device is the predetermined state when change in communication state is recognized based on the state of communication with the first device. ### Claim 3 (depends on 2) The communication control device according to claim 2, wherein the communication control device and the first device are connected to each other via wireless communication, and wherein the notification unit is configured to cause the communication unit to transmit the predetermined information to the second device by determining that the state of communication with the first device is the predetermined state when communication with the first device is cut off. ### Claim 4 (depends on 2) The communication control device according to claim 2, wherein the communication control device and the first device are physically connected to each other, and wherein the notification unit is configured to cause the communication unit to transmit the predetermined information to the second device by determining that the state of communication with the first device is the predetermined state when the communication control device is disconnected from the first device physically. ### Claim 5 (depends on 1) The communication control device according to claim 1, further comprising a sensor configured to detect the behavior of the communication control device, wherein the notification unit is configured to cause the communication unit to transmit the predetermined information to the second device by determining that the behavior of the communication control device is the predetermined behavior when change in behavior of the communication control device is recognized based on output of the sensor. ### Claim 6 (depends on 1) The communication control device according to claim 1, further comprising a function restriction unit configured to stop or restrict a function of the first device when the state of communication with the first device is a predetermined state or the behavior of the communication control device is the predetermined behavior. ### Claim 7 (depends on 1) The communication control device according to claim 1, wherein the notification unit is configured to cause the communication unit to transmit the predetermined information to a third device different from the second device when the state of communication with the first device is a predetermined state or the behavior of the communication control device is the predetermined behavior. ### Claim 8 (depends on 1) The communication control device according to claim 1, wherein the communication unit is connected to the first device and a network communication network and is configured to communicate with a second communication control device connected to the second device and the network communication network, and wherein the communication control device further comprises: a first authentication unit; and a first control unit configured to: request the first authentication unit to perform at least one of a mutual authentication process of performing mutual authentication using a secret key and a client certificate issued by a private certificate authority in communication with the second communication control device and an encryption/decryption process of encrypting information to be transmitted to the second device by the first device using a common key determined by the mutual authentication process and decrypting information transmitted to the first device by the second device; transmit the encrypted information to the second communication control device; and transmit the decrypted information to the first device. ### Claim 9 A communication control system, comprising: a first communication control device connected to a first device and a network communication network; and a second communication control device connected to a second device and the network communication network, wherein the first communication control device comprises: a communication unit configured to: communicate with a first device and a second device; wirelessly communicate with at least one of the first device and the second device; and transmit data acquired by the first device to the second device; a notification unit configured to cause the communication unit to transmit predetermined information to the second device when a state of communication with the first device is a predetermined state or behavior of the communication control device is predetermined behavior; a first authentication unit; and a first control unit configured to: request the first authentication unit to perform at least one of a mutual authentication process of performing mutual authentication using a secret key and a first certificate issued by a private certificate authority in communication with the second communication control device and an encryption/decryption process of encrypting information to be transmitted to the second device by the first device using a common key determined by the mutual authentication process and decrypting information transmitted to the first device by the second device; transmit the encrypted information to the second communication control device; and transmit the decrypted information to the first device, and wherein the second communication control device comprises: a second authentication unit; and a second control unit configured to: request the second authentication unit to perform at least one of a mutual authentication process of performing mutual authentication using a secret key and a second certificate issued by the private certificate authority in communication with the first conununication control device and an encryption/decryption process of encrypting information to be transmitted to the first device by the second device using a common key determined by the mutual authentication process and decrypting information transmitted to the second device by the first device; transmit the encrypted information to the first communication control device; and transmit the decrypted information to the second device.