Abstract: A communication device according to the present invention aims to restart data transmission/reception between communication devices in a short amount of time, without performing key sharing again, even when a communication device of a transmitting side is rebooted. The communication device includes a volatile memory storing a count value, a generator generating data including a count value, a communicator transmitting data to another communication device, a storage instructor, each time the communicator transmits data, updating the volatile memory with a count value, and a nonvolatile memory. A count value is incremented each time the communicator transmits data, the storage instructor causes the nonvolatile memory to store a count value at certain intervals, and the generator, when the communication device is rebooted, includes in data a sum of a certain value and a count value stored in the nonvolatile memory.

Abstract: A communication device according to the present invention aims to restart data transmission/reception between communication devices in a short amount of time, without performing key sharing again, even when a communication device of a transmitting side is rebooted. The communication device includes a volatile memory storing a count value, a generator generating data including a count value, a communicator transmitting data to another communication device, a storage instructor, each time the communicator transmits data, updating the volatile memory with a count value, and a nonvolatile memory. A count value is incremented each time the communicator transmits data, the storage instructor causes the nonvolatile memory to store a count value at certain intervals, and the generator, when the communication device is rebooted, includes in data a sum of a certain value and a count value stored in the nonvolatile memory.

Abstract: The network system includes a controller (10) and a plurality of terminals (20). The controller (10) sends a first request signal (41) which indicates a first limited time period defining a range within which the controller (10) receives signals respectively from the terminals (20) of which the number is identical to the maximum number of the terminals (20). Upon receiving the first request signal (41), the terminal (20) sends a first response signal (51) within the first limited time period. The controller (10) determines a total number of the terminals (20) on the basis of the number of the first response signals (51) received within the first limited time period, thereby determining a second limited time period defining a range within which the controller (10) receives signals respectively from the terminals (20) of which the number is identical to the total number of the terminals (20). The controller (10) sends the second request signal (42) which indicates the second limited time period.

Abstract: An operation terminal 1 is configured so as to transmit, as a control command, an individual control command transmitted individually to a specific control device 2 of control devices 2, or a collective control command broadcasted collectively to two or more control devices 2 of control devices 2. Control terminal 2 comprises: a command determination unit 2d determining whether received control command is individual control command or collective control command; and an information processing unit 2b which, if received control command is individual control command, responds by collectively broadcasting to a plurality of operation terminals a state change notification corresponding to execution of individual control command, and, if received control command is collective control command, responds by collectively broadcasting to operation terminals 1, with a timing different from the other control terminals 2, a state change notification corresponding to execution of collective control command.

Abstract: The network system includes a controller and a plurality of terminals. The controller sends a first request signal indicative of a response probability to the plurality of the terminals. Upon receiving the first request signal, each terminal sends a first response signal to the controller at the response probability indicated by the first request signal. The controller determines the total number of the terminals on the basis of the number of the received first response signals and the response probability. The controller determines a limited time period on the basis of the total number of the terminals, and sends a second request signal indicative of the limited time period to the terminals. Upon receiving the second request terminal, each terminal randomly selects a waiting time period from time periods not greater than the limited time period, and sends a second response signal to the controller after a lapse of the waiting time period.

Abstract: The network system includes a controller and a plurality of terminals. The controller repeats transmitting a request signal indicative of a predetermined probability. Upon receiving the request signal, the terminal sends, at the probability indicated by the request signal, a response signal including the identification information uniquely allocated to the terminal. Upon receiving the response signal, the controller sends a notification signal with reference to the identification information included in the response signal. The terminal judges whether or not a response has been completed, on the basis of the received notification signal. The terminal sends no response signal in response to receiving the request signal once after judging that the response has been completed. The controller prepares the next request signal indicative of the probability not less than that indicated by the previous request signal.

Abstract: Equipment 1 includes a service provision functional unit 1f, an information processing unit 1e, a correspondence relation collecting functional unit 1c, a correspondence relation storage unit 1b, and a service request functional unit 1d. The information processing unit 1e has one or more objects, and provides control information to the service provision functional unit 1f by executing the object upon receiving a service request including a specific identifier. The correspondence relation collecting unit 1c collects a correspondence relation between the specific identifier of the object and address information of the equipment 1 from the equipment 1. The correspondence relation storage unit 1b stores the correspondence relation between the specific identifier and the address information, which is collected by the correspondence relation collecting unit 1c.

Abstract: An operation terminal 1 is configured so as to transmit, as a control command, an individual control command transmitted individually to a specific control device 2 of control devices 2, or a collective control command broadcasted collectively to two or more control devices 2 of control devices 2. Control terminal 2 comprises: a command determination unit 2d determining whether received control command is individual control command or collective control command; and an information processing unit 2b which, if received control command is individual control command, responds by collectively broadcasting to a plurality of operation terminals a state change notification corresponding to execution of individual control command, and, if received control command is collective control command, responds by collectively broadcasting to operation terminals 1, with a timing different from the other control terminals 2, a state change notification corresponding to execution of collective control command.

Abstract: The network system includes a controller (10) and a plurality of terminals (20). The controller (10) sends a first request signal (41) which indicates a first limited time period defining a range within which the controller (10) receives signals respectively from the terminals (20) of which the number is identical to the maximum number of the terminals (20). Upon receiving the first request signal (41), the terminal (20) sends a first response signal (51) within the first limited time period. The controller (10) determines a total number of the terminals (20) on the basis of the number of the first response signals (51) received within the first limited time period, thereby determining a second limited time period defining a range within which the controller (10) receives signals respectively from the terminals (20) of which the number is identical to the total number of the terminals (20). The controller (10) sends the second request signal (42) which indicates the second limited time period.

Abstract: The network system includes a controller and a plurality of terminals. The controller repeats transmitting a request signal indicative of a predetermined probability. Upon receiving the request signal, the terminal sends, at the probability indicated by the request signal, a response signal including the identification information uniquely allocated to the terminal. Upon receiving the response signal, the controller sends a notification signal with reference to the identification information included in the response signal. The terminal judges whether or not a response has been completed, on the basis of the received notification signal. The terminal sends no response signal in response to receiving the request signal once after judging that the response has been completed. The controller prepares the next request signal indicative of the probability not less than that indicated by the previous request signal.

Abstract: The network system includes a controller and a plurality of terminals. The controller sends a first request signal indicative of a response probability to the plurality of the terminals. Upon receiving the first request signal, each terminal sends a first response signal to the controller at the response probability indicated by the first request signal. The controller determines the total number of the terminals on the basis of the number of the received first response signals and the response probability. The controller determines a limited time period on the basis of the total number of the terminals, and sends a second request signal indicative of the limited time period to the terminals. Upon receiving the second request terminal, each terminal randomly selects a waiting time period from time periods not greater than the limited time period, and sends a second response signal to the controller after a lapse of the waiting time period.

Abstract: Equipment 1 includes a service provision functional unit 1f, an information processing unit 1e, a correspondence relation collecting functional unit 1c, a correspondence relation storage unit 1b, and a service request functional unit 1d. The information processing unit 1e has one or more objects, and provides control information to the service provision functional unit 1f by executing the object upon receiving a service request including a specific identifier. The correspondence relation collecting unit 1c collects a correspondence relation between the specific identifier of the object and address information of the equipment 1 from the equipment 1. The correspondence relation storage unit 1b stores the correspondence relation between the specific identifier and the address information, which is collected by the correspondence relation collecting unit 1c.

Abstract: A voice control system for managing home electrical appliances includes a home agent server (HAS) connected to the home electrical appliances, a microphone and a speaker linked to the agent server through an in-house network. An transaction processing (TP) program runs on HAS and interprets the user's voice request to find a destined appliance and a manner of control the same, and performs the requested control to the destined appliance. The result is notified to the user by means of a voice message.

Abstract: A voice control system for managing home electrical appliances includes a home agent server (HAS) connected to the home electrical appliances, a microphone and a speaker linked to the agent server through an in-house network. An transaction processing (TP) program runs on HAS and interprets the user's voice request to find a destined appliance and a manner of control the same, and performs the requested control to the destined appliance. The result is notified to the user by means of a voice message.