An electronic door lock system is provided. It comprises a portable electronic device and an electronic door lock device. The portable electronic device comprises a first Bluetooth communication module. The electronic door lock device comprises a second Bluetooth communication module communicated to the portable electronic device via a Bluetooth wireless connection. When the portable electronic device is Bluetooth paired to the electronic door lock device, an authorization code is exchanged between the first Bluetooth communication module and the second Bluetooth communication module. When the portable electronic device is near to the electronic door lock device, the authorization code is matched between the portable electronic device and the electronic door lock device. After the match is confirmed, the electronic door lock device will be unlocked. Compared to the prior art, the present invention offers users more convenient using experience.

An apparatus and method for a task and energy efficient Black Box (BB) are disclosed. The various embodiments of the disclosure enable, support and/or provide a configuration paradigm enabling an energy limited device or “BB” to achieve optimal energy usage and the communication transmission scheme used. In the “deployed mode”, rather than wasting precious energy broadcasting a signal when no one can receive such energy, the unit operates in a stand-by dormant mode, managing its resources at a low level of energy consumption. In this mode, the unit simply listens to an activation signal coming from an “interrogator” transponder hat has actually deployed in the vicinity (within range). When the device detects an activation signal, it becomes “awaken” and it will then start broadcasting its ping.

A method for transmitting a message via an access network to a group of terminals is provided. The access network transmits the message to the group of terminals over a broadcast channel. The access network receives a request for retransmission of the message transmitted from a terminal that has not correctly received the message. The access network evaluates a predetermined broadcast retransmission criterion and retransmits the message over a point-to-point link or over a broadcast channel according to the predetermined broadcast retransmission criterion.

A method for transmitting a message via an access network to a group of terminals is provided. The access network transmits the message to the group of terminals over a broadcast channel. The access network receives a request for retransmission of the message transmitted from a terminal that has not correctly received the message. The access network evaluates a predetermined broadcast retransmission criterion and retransmits the message over a point-to-point link or over a broadcast channel according to the predetermined broadcast retransmission criterion.

A communicator in one aspect of the present disclosure includes a connector, a communication circuit, and a communication controller. The connector is electrically coupled to an electric working machine. The communication circuit performs wireless communication. The communication controller cyclically transmits operational information without specifying a recipient via the communication circuit in response to an operating mode of the communication controller being set to an operation-transmission mode. The operational information indicates an operating state of the electric working machine.

A communicator in one aspect of the present disclosure includes a connector, a communication circuit, and a communication controller. The connector is electrically coupled to an electric working machine. The communication circuit performs wireless communication. The communication controller cyclically transmits operational information without specifying a recipient via the communication circuit in response to an operating mode of the communication controller being set to an operation-transmission mode. The operational information indicates an operating state of the electric working machine.

A communicator in one aspect of the present disclosure includes a connector, a communication circuit, and a communication controller. The connector is electrically coupled to an electric working machine. The communication circuit performs wireless communication. The communication controller cyclically transmits operational information without specifying a recipient via the communication circuit in response to an operating mode of the communication controller being set to an operation-transmission mode. The operational information indicates an operating state of the electric working machine.

A communicator in one aspect of the present disclosure includes a connector, a communication circuit, and a communication controller. The connector is electrically coupled to an electric working machine. The communication circuit performs wireless communication. The communication controller cyclically transmits operational information without specifying a recipient via the communication circuit in response to an operating mode of the communication controller being set to an operation-transmission mode. The operational information indicates an operating state of the electric working machine.

A database is packed up for broadcast over an iTV system by packaging, compressing, and streaming the database via one or more carousels. The packing up process creates one or more data modules, each including record sets, and one or more modules containing computer-readable instructions for resolving queries using the record sets. These modules, along with a table of contents module that includes descriptions of how the data modules are composed and interfaces to the modules containing the computer-readable instructions, are downloaded at a set top box in order to resolve queries from television users and/or other applications. Thereafter, the computer-readable instructions are executed to resolve the queries. When available, the results produced by executing the query may be displayed on a television. Information regarding the queries may be used to modify the packing up and/or broadcast processes.

A communicator in one aspect of the present disclosure includes a connector, a communication circuit, and a communication controller. The connector is electrically coupled to an electric working machine. The communication circuit performs wireless communication. The communication controller cyclically transmits operational information without specifying a recipient via the communication circuit in response to an operating mode of the communication controller being set to an operation-transmission mode. The operational information indicates an operating state of the electric working machine.