Abstract: A communication controller controls non-contact communication with an external device via an antenna while at least one of first and second power is supplied. A first circuit electrically connects a first power supply to a communication node. A second circuit electrically connects a second power supply to the communication node. The first circuit includes a first electrical component configured to prevent second power from being supplied to a particular target electrically connected to the first power supply while the second power is supplied to the communication node. The communication controller communicates with the communication node in a certain data communication method while the second power is supplied to the communication node. In response to reception of electric power from the external device via the antenna, the second power supply supplies the second power to the communication controller, and supplies the second power to the communication node through the second circuit.

Abstract: An image processing apparatus including a wireless communication unit, an image processing unit, and a controller configured to establish a wireless connection to perform wireless signal communication between the wireless communication unit and an external device, acquire a reception intensity of a wireless signal received from the external device via the wireless communication unit, determine whether the reception intensity is more than a threshold value, when determining that the reception intensity is more than the threshold value, control the image processing unit to execute an image processing instruction received from the external device via the wireless communication unit, and when determining that the reception intensity is not more than the threshold value, transmit an instruction to display a warning on the external device, to the external device via the wireless communication unit, without controlling the image processing unit to execute the image processing instruction.

Abstract: A wireless communication device has a first wireless communication unit and a second wireless communication unit. A controller of the wireless communication device is configured to set a communication mode of the first wireless communication unit to a normal mode and a high-quality mode. A communication condition using the first wireless communication unit is detected, and whether the particular value is in a particular range indicating certain communication condition or not is determined. When a particular value is in not the particular range, and when the second wireless communication unit is currently in communication with the second external device, the communication mode of the first wireless communication unit is switched to a high-quality mode.

Abstract: An image processing apparatus including a wireless communication unit, an image processing unit, and a controller configured to establish a wireless connection to perform wireless signal communication between the wireless communication unit and an external device, acquire a reception intensity of a wireless signal received from the external device via the wireless communication unit, determine whether the reception intensity is more than a threshold value, when determining that the reception intensity is more than the threshold value, control the image processing unit to execute an image processing instruction received from the external device via the wireless communication unit, and when determining that the reception intensity is not more than the threshold value, transmit an instruction to display a warning on the external device, to the external device via the wireless communication unit, without controlling the image processing unit to execute the image processing instruction.

Abstract: A communication apparatus is configured to, and a computer-readable medium causes a communication apparatus to store position information, acquire content relational information including titles summary information, and display each title of each content relational information in a scrolling single-line form. An accepting section accepts a selection of the displayed content title, and a summary display control section displays the summary information corresponding to the selected title. A selection information storage section stores selection information corresponding to the selected title. A priority setting section sets a priority for each content title of the content relational information based on the corresponding selection information stored in the selection information storage section. The display control section displays and scrolls each title of each of content relational information in a single-line form in a descending order based on the priority of each title.

Abstract: A communication controller controls non-contact communication with an external device via an antenna while at least one of first and second power is supplied. A first circuit electrically connects a first power supply to a communication node. A second circuit electrically connects a second power supply to the communication node. The first circuit includes a first electrical component configured to prevent second power from being supplied to a particular target electrically connected to the first power supply while the second power is supplied to the communication node. The communication controller communicates with the communication node in a certain data communication method while the second power is supplied to the communication node. In response to reception of electric power from the external device via the antenna, the second power supply supplies the second power to the communication controller, and supplies the second power to the communication node through the second circuit.

Abstract: A wireless communication device has a first wireless communication unit and a second wireless communication unit. A controller of the wireless communication device is configured to set a communication mode of the first wireless communication unit to a normal mode and a high-quality mode. A communication condition using the first wireless communication unit is detected, and whether the particular value is in a particular range indicating certain communication condition or not is determined. When a particular value is in not the particular range, and when the second wireless communication unit is currently in communication with the second external device, the communication mode of the first wireless communication unit is switched to a high-quality mode.

Abstract: A communicating section communicates with a memory element of each of first cartridges via first mount sections. The communicating section has first terminals and second terminals. First signal lines connect the first terminals with the first mount sections. Second signal lines connect the second terminals with the first mount sections. The first mount sections form a plurality of groups. The first mount sections in each group are connected in common with one of the first terminals via a corresponding first signal line. The first mount sections in one group are connected with the second terminals that are different from each other via respective second signal lines. Each of the second terminals is connected with one of the first mount sections in one group and with one of the first mount sections in another group via a corresponding second signal line.

Abstract: A first memory section stores secret keys that are identical to secret keys stored in a cartridge. A second memory section stores history information relating to a history of usage. A secret-key selecting section performs a secret-key selecting operation of selecting, based on the history information, a specific secret key from among the secret keys. A first-authentication-information generating section encrypts a random number based on the specific secret key, thereby generating first authentication information, which is stored in a third memory section. A transmitting section transmits first identification information for identifying the specific secret key and the random number to the cartridge. A receiving section receives second authentication information generated at the cartridge by encrypting the random number based on a secret key identified by the first identification information.

Abstract: A communication device is provided that includes a communication unit configured to perform communication of a voice signal with a party device via a communication line, a wireless communication unit configured to perform wireless communication of a data signal with an external device, and a controller configured to perform first wireless communication and second wireless communication in parallel, using the wireless communication unit. The first wireless communication is adapted to enable wireless communication of the voice signal between a voice communication device and the communication unit via the wireless communication unit. The second wireless communication is adapted to enable wireless communication of the data signal between the external device and the wireless communication unit.

Abstract: A first memory section stores secret keys that are identical to secret keys stored in a cartridge. A second memory section stores history information relating to a history of usage. A secret-key selecting section performs a secret-key selecting operation of selecting, based on the history information, a specific secret key from among the secret keys. A first-authentication-information generating section encrypts a random number based on the specific secret key, thereby generating first authentication information, which is stored in a third memory section. A transmitting section transmits first identification information for identifying the specific secret key and the random number to the cartridge. A receiving section receives second authentication information generated at the cartridge by encrypting the random number based on a secret key identified by the first identification information.

Abstract: A communication system switches a communication state from a first communication state where a wireless communication unit of a communication device performs data communication and voice communication with an external device and a phone device to a second communication state to perform the data communication between the phone device and the external device, in response to electric power supply to the wireless communication unit being interrupted. The first communication state is set with a communication-device network ID used for the communication device and a phone-device network ID used for the phone device. The second communication state is set with the phone-device network ID used for the communication device and the communication-device network ID used for the phone device.

Abstract: A communication system switches a communication state from a first communication state where a communication device performs data communication and voice communication with an external device, a first phone device, and a second phone device to a second communication state to perform the voice communication between the communication device and the second phone device and the data communication between the first phone device and the external device, when the voice communication is started using the second phone device in response to a call from a communication line. The second communication state is set when a first-phone-device network ID is used for the communication device, a communication-device network ID is used for the first phone device, and a party device of the second phone device is set to a device identified with the first-phone-device network ID.

Abstract: A communicating section communicates with a memory element of each of first cartridges via first mount sections. The communicating section has first terminals and second terminals. First signal lines connect the first terminals with the first mount sections. Second signal lines connect the second terminals with the first mount sections. The first mount sections form a plurality of groups. The first mount sections in each group are connected in common with one of the first terminals via a corresponding first signal line. The first mount sections in one group are connected with the second terminals that are different from each other via respective second signal lines. Each of the second terminals is connected with one of the first mount sections in one group and with one of the first mount sections in another group via a corresponding second signal line.

Abstract: A communication system includes a main communication unit, a subcommunication unit that communicates with the main communication unit by using first wireless channels, and an external communication unit that communicates with the main communication unit by using second wireless channels. The subcommunication unit includes a state detection unit that detects a use state of the second wireless channels. The main communication unit includes a state acquisition unit that acquires the use state of the second wireless channels, a selection unit that selects a predetermined number of the first wireless channels with the less effect of radio wave interaction in the wireless communications based on the use state, a channel determination unit that determines one of the predetermined number of the first wireless channels, and a first wireless communication unit that communicates with the subcommunication unit using the one of the predetermined number of the first wireless channels.

Abstract: A communication system switches a communication state from a first communication state where a communication device performs data communication and voice communication with an external device, a first phone device, and a second phone device to a second communication state to perform the voice communication between the communication device and the second phone device and the data communication between the first phone device and the external device, when the voice communication is started using the second phone device in response to a call from a communication line. The second communication state is set when a first-phone-device network ID is used for the communication device, a communication-device network ID is used for the first phone device, and a party device of the second phone device is set to a device identified with the first-phone-device network ID.

Abstract: A communication system switches a communication state from a first communication state where a wireless communication unit of a communication device performs data communication and voice communication with an external device and a phone device to a second communication state to perform the data communication between the phone device and the external device, in response to electric power supply to the wireless communication unit being interrupted. The first communication state is set with a communication-device network ID used for the communication device and a phone-device network ID used for the phone device. The second communication state is set with the phone-device network ID used for the communication device and the communication-device network ID used for the phone device.

Abstract: A communication device is provided that includes a communication unit configured to perform communication of a voice signal with a party device via a communication line, a wireless communication unit configured to perform wireless communication of a data signal with an external device, and a controller configured to perform first wireless communication and second wireless communication in parallel, using the wireless communication unit. The first wireless communication is adapted to enable wireless communication of the voice signal between a voice communication device and the communication unit via the wireless communication unit. The second wireless communication is adapted to enable wireless communication of the data signal between the external device and the wireless communication unit.

Abstract: A communication apparatus is configured to, and a computer-readable medium causes a communication apparatus to store position information, acquire content relational information including titles summary information, and display each title of each content relational information in a scrolling single-line form. An accepting section accepts a selection of the displayed content title, and a summary display control section displays the summary information corresponding to the selected title. A selection information storage section stores selection information corresponding to the selected title. A priority setting section sets a priority for each content title of the content relational information based on the corresponding selection information stored in the selection information storage section. The display control section displays and scrolls each title of each of content relational information in a single-line form in a descending order based on the priority of each title.

Abstract: A communication system includes a main communication unit, a subcommunication unit that communicates with the main communication unit by using first wireless channels, and an external communication unit that communicates with the main communication unit by using second wireless channels. The subcommunication unit includes a state detection unit that detects a use state of the second wireless channels. The main communication unit includes a state acquisition unit that acquires the use state of the second wireless channels, a selection unit that selects a predetermined number of the first wireless channels with the less effect of radio wave interaction in the wireless communications based on the use state, a channel determination unit that determines one of the predetermined number of the first wireless channels, and a first wireless communication unit that communicates with the subcommunication unit using the one of the predetermined number of the first wireless channels.