Abstract: Provided is an optimal user interface for curbing sound generated by an imaging device. For this purpose, the imaging device includes a user interface control unit that performs user interface processing of enabling selection of whether or not to curb at least a part of sound generated in a first period from a power-on state until issuance of a transition instruction to a power-off state and a second period from the issuance of the transition instruction until the power-on state, and a switching control unit that changes control related to sound according to a selection result of the user interface processing.

Abstract: There is provided an information processing apparatus including a storage unit where function attribute information, user operation information, and recommendation degree information are recorded to be associated with one another, the attribute information indicating an attribute about a function of a predetermined device, the operation information indicating content of a predetermined user operation input to the device, and the degree information indicating a recommendation degree which serves as a reference for outputting, on a priority basis, display for recommending use of the function to a display apparatus, a recommendation degree information updating unit that updates, when a predetermined user operation is input, the degree information to increase the degree associated with function attribute information, and a recommended function determining unit that determines, based on the degree information recorded in the unit, a function with a highest degree as a recommended function.

Abstract: A communication terminal includes a CPU (28). The CPU (28) issues to a router (16) a send request for requesting the router (16) to send an ask signal for repetitive responses to a server (14). Then, the ask signal is sent to the server (14) by the router (16), and a receive port is temporarily opened. From the server (14), a response signal is repeatedly sent in response to the ask signal. To the response signal, time information representative of a waiting time from receiving an ask signal to its reply is attached. A response signal sent back while the receive port is opened arrives at the communication terminal through the router (16), but a response signal sent back after the receive port is closed is discarded in the router (16). The CPU (28) repeatedly issues a send request to the router (16) regarding a time indicated by time information attached to the response signal lastly received as an issuance cycle (T).

Abstract: A command processing apparatus includes a CPU (28). The CPU (28) determines whether or not a router (16) is compliant with UPnP, and issues a port releasing request to the router (16) when the determination result is affirmative. Thus, a specific port is released. Next, destination information including an identifier of the specific port is requested to be sent to a server (14). The destination information is sent to the server (14) by the router (16), and the server (14) sends a command to the specific port on the basis of the identifier included in the destination information. When the determination result is negative, an information send request is repeatedly issued. Every issuance, destination information including an identifier of an arbitrary port (response wait port) is sent to the server (14) by the router (16), and the response wait port is temporarily released. The server (14) outputs a command to the response wait port on the basis of the identifier included in the destination information.

Abstract: There is provided an information processing apparatus including a storage unit where function attribute information, user operation information, and recommendation degree information are recorded to be associated with one another, the attribute information indicating an attribute about a function of a predetermined device, the operation information indicating content of a predetermined user operation input to the device, and the degree information indicating a recommendation degree which serves as a reference for outputting, on a priority basis, display for recommending use of the function to a display apparatus, a recommendation degree information updating unit that updates, when a predetermined user operation is input, the degree information to increase the degree associated with function attribute information, and a recommended function determining unit that determines, based on the degree information recorded in the unit, a function with a highest degree as a recommended function.

Abstract: When accepting a send request for requesting to send a command to a client from a terminal (mobile phone, PC), a server determines terminal types. When the determination result shows a PC, a command is sent to the client, and an execution result of the sent command is received from the client, and the received execution result is sent to the PC. When the determination result shows a mobile phone, the client is instructed to issue a port releasing request to request a router to release an arbitrary port, a number of the released port is acquired from the client, and the mobile phone is instructed to send the command to the destination specified by the destination information including the acquired port number.

Abstract: A communication terminal includes a CPU (28). The CPU (28) issues to a router (16) a send request for requesting the router (16) to send an ask signal for repetitive responses to a server (14). Then, the ask signal is sent to the server (14) by the router (16), and a receive port is temporarily opened. From the server (14), a response signal is repeatedly sent in response to the ask signal. To the response signal, time information representative of a waiting time from receiving an ask signal to its reply is attached. A response signal sent back while the receive port is opened arrives at the communication terminal through the router (16), but a response signal sent back after the receive port is closed is discarded in the router (16). The CPU (28) repeatedly issues a send request to the router (16) regarding a time indicated by time information attached to the response signal lastly received as an issuance cycle (T).

Abstract: A command processing apparatus includes a CPU (28). The CPU (28) determines whether or not a router (16) is compliant with UPnP, and issues a port releasing request to the router (16) when the determination result is affirmative. Thus, a specific port is released. Next, destination information including an identifier of the specific port is requested to be sent to a server (14). The destination information is sent to the server (14) by the router (16), and the server (14) sends a command to the specific port on the basis of the identifier included in the destination information. When the determination result is negative, an information send request is repeatedly issued. Every issuance, destination information including an identifier of an arbitrary port (response wait port) is sent to the server (14) by the router (16), and the response wait port is temporarily released. The server (14) outputs a command to the response wait port on the basis of the identifier included in the destination information.

Abstract: A PC (10) has an SSID and a WEP key required for wireless communication with a wireless LAN access point router (30). When the PC (10) has wireless connection with the Internet radio receiver (20) in Ad-Hoc mode, the PC (10) transfers the encrypted SSID and WEP key to the Internet radio receiver (20). The Internet radio receiver (20) decrypts the transferred SSID and WEP key and validates the decrypted SSID and WEP key.