摘要:
The present invention provides a message broadcast system and method for vehicular network. The system comprises a positioning device, a transmitting device and a processing device. The positioning device positions a location data of a vehicle. The transmitting device transmits a first packet to a neighbor vehicle. The processing device is coupled to the positioning device and transmitting device. The processing device determines the transmitting device transmits a second packet to the neighbor vehicle when the vehicle is in a section of crossroads. The processing device determines whether the vehicle is in a section of crossroads or a road section according to a third packet periodically transmitted from the neighbor vehicle.
摘要:
The present invention provides a positioning method for long-thin fleet, which moves along a direction and has a motion track and a leading member. The leading member is in forefront of the motion track. The positioning method comprises the following steps: a positioning step and a transmitting step. The positioning step gets a positioning data through a GPS in a preset time. The transmitting step transmits a periodic signal to the members of the fleet through a wireless network system. The leading member proceeds the positioning and transmitting steps. The motion track is connected according to the positioning data.
摘要:
A method for positioning a mobile device includes following steps. Based on a prior location point of the mobile device, many sample points are generated according to a prior probability distribution associated with the prior location point. A current moving track or a current moving status of the mobile device is obtained, and the sample points are updated according to at least one of the current moving track and the current moving status. A current estimated position is obtained based on a radio frequency signal received by the mobile device. A current probability distribution of the sample points corresponding to the radio frequency signal or the current estimated position is generated to obtain corresponding weights of the updated sample points. A current location point of the mobile device is obtained according to the weights and distribution of the sample points.
摘要:
A localization device assisted with augmented reality and a localization method thereof are provided. The localization device includes a subject object coordinate generating unit, a relative angle determining element and a processing unit. The subject object coordinate generating unit selects at least three subject objects outside the localization device and obtains at least three subject object coordinate values of the at least three subject objects. The relative angle determining element determines at least two viewing angle differences between any two of the at least three subject objects. The processing unit generates a location coordinate value of the localization device according to the at least two viewing angle differences and the at least three subject object coordinate values.
摘要:
The present invention relates to a method for selecting sensor nodes, the method is adopted for calculating the value of a contribution function for a plurality of objects contributed by a plurality of sensor nodes, wherein the contribution function value is calculated by way of determining a coverage level of the objects made by the sensor nodes, or by means of arranging a sub sensor node group capable of sensing covering an object group and calculating the value of the contribution function for the objects contributed by the sensor nodes; Therefore, through the method, the sensor nodes having maximum contribution to the objects can be selected and arranged in a specific environment, and the sensing direction of those sensor nodes can be adjusted for making the sensor node group performs the best efficiency.
摘要:
A transmission method and a transmission system are provided. The transmission method is for communicating an electronic device and a wireless earphone. The wireless earphone has a normal mode and a sleep mode. The transmission method includes the following steps. If the wireless earphone works on the normal mode, then the wireless earphone continuously transmits the data of synchronization signals to the electronic device. If the wireless earphone works on the sleep mode, then the wireless earphone stops transmitting the data of synchronization signals to the electronic device, and simulates the data of synchronization signals.
摘要:
A Bluetooth network topology. The Bluetooth network system includes a plurality of piconets, containing a plurality of Bluetooth units, including one master unit and a plurality of slave units. These piconets are linked by the bridge units to form a scatternet ring. The scatternet ring is formed by a centralized forming mechanism, operated by a simple yet efficient routing protocol and maintained by recovery and extension mechanisms.
摘要:
A method for establishing a voice over IP (VoIP) call in a wireless local-area network (WLAN) access point includes an access point receiving a first signal and forwarding the first signal to a station. After forwarding the first signal, the access point receives a request from the station. In response to the request, the access point allocates a resource for the station. Then, the access point responds to the station with a response indicating that the resource is allocated. Subsequent to the access point responding to the station, the access point receives a last signal from the station.
摘要:
An augmented reality-based file transfer method and a related file transfer system integrated with cloud computing are provided. The file transfer method is applied to file transmission between a first device and a second device wirelessly connected to each other, wherein the first device includes a file, a display unit, and an input unit electronically connected to the display unit. The file transfer method includes the following steps: when an image stored in the first device is opened, displaying the file and the image on the display unit of the first device, wherein the image comprises a face image of the second user; when the file is dragged to the face image of the second user shown in the image via the input unit and is then released, generating a command; and transferring the file from the first device to the second device according to the command.
摘要:
An interactive system includes a display device and an interactive device. The display device includes a display module for displaying an image thereon, a S processor module and a transceiver. The interactive device includes an image capturing unit, a control unit, and a signal transceiving unit configured to communicate with the transceiver. The image capturing unit is operable to capture at least a part of the image displayed on the display module. The control unit is operable to transmit information of the captured part of the image to the transceiver via the signal transceiving unit. The processor module is operable to determine location of the interactive device relative to the image displayed on the display module based on the information of the part of the image received by the transceiver.