摘要:
A hand-held device having positioning and photographing functions and geographical positioning methods thereof is provided. The hand-held device includes a photographing module, a positioning module, a database and a processor. The photographing module photographs environment of a shooting place to form a digital picture. The positioning module accesses a positioning data of the shooting place. The processor matches the positioning data of the shooting place with a geographical positioning condition when the digital picture is obtained, so as to get a target geographical area data corresponding to the shooting place, from all geographical area data. The target geographical area data is displayed on the digital picture corresponding to the shooting place and the geographical positioning condition is an area center data of every geographical area data or plural boundary pointers which include boundary coordinates of every geographical area data.
摘要:
A radio transceiver module includes an interposer, a first wire routing layer, a second wire routing layer, a passive component and a wireless network chip. The interposer is provided with a first surface and an opposite second surface, and includes a plurality of through-holes. The first wire routing layer is configured on the first surface of the interposer, the second wire routing layer is configured on the second surface of the interposer, the passive component and the wireless network chip are configured on a surface of the first wire routing layer; whereas, the wireless network chip, the interposer and the passive component are electrically connected with one another.
摘要:
A hybrid wireless network system is disclosed. The hybrid wireless network system includes an antenna array, an analog subsystem, and a digital subsystem. The antenna array at least includes two antenna elements. In the case of using multiple antenna elements to extend link range and coverage, a coarse-fine method is included for antenna elements selection. The analog subsystem calculates a difference signal and a sum signal based on the two RF signals. The analog subsystem includes step leveling devices. The digital subsystem estimates a direction-of-arrival (DOA) based on the sum signal and the difference signal. The step-leveling devices receive weights from the digital subsystem, in form of a feedback control, to apply the weights on the two RF signals respectively. The digital subsystem repetitively calculates new weights to update a beam pattern formed by the two RF signals until the DOA approaches null.
摘要:
The present invention provides an antenna array structure which includes multiple array elements, and the antenna array structure is using for the application of the WLAN (wireless local area network) or WMAN (wireless metro area network.) Furthermore, the array elements of the present invention are phased arrays or attenuated arrays, and when configuration with different type of the array element is used, the corresponding BFN (beam forming network) can also be implemented in various possibilities. With all the configuration of the present invention, the manufacturers can have a stable array structure for their applications.
摘要:
A method of channel allocation for respective radios is disclosed. The method begins by scanning within sectors of a phased array for retrieval of BSSIDs belonging to each beam of a particular channel in the sectors. Then, corresponding characterizing information is recorded for every BSSID located. Next, an initial channel allocation for the respective radios is formed. The initial channel allocation is compared with a plurality of predetermined channel allocation modes that include a first mode of Point-to-Point (PtP) linkage, a second mode of MultiPoint-to-Point (MPtP) linkage, a third mode of Point-to-MultiPoint (PtMP) linkage, and a fourth mode of MultiPoint-To-MultiPoint (MPtMP) linkage, and a mode out of the predetermined channel allocation modes is selected that best characterizes the initial channel allocation. The radios are configured based on the channel allocation and unbalanced loading is reduced by adding/subtracting a non-overlapped frequency channel of a radio to an unbalanced beam.
摘要:
The present invention provides a system and method for RF gain control that extracts the background noise information of the received RF signal in the short inter-frame space (SIFS), and computes the background noise information and strength information of the received RF signal to output a feedback control signal to adjust the gain of the RF signal receiver. It optimizes the receiving system and makes the received RF signal be of sufficient strength and have a good quality as well.
摘要:
A switching circuit is used for switching a plurality of antennas of an antenna module so that the antenna module has a plurality of modes of use. Each mode of use uses two antennas for radiating a transmitting signal generating by a signal processing unit or sending a received signal to the signal processing unit. The switching circuit includes a plurality of power dividing modules, a plurality of switches and a control unit for controlling on/off of the switches. A mode of use is selected so as to pass the signal, through the switches and the power dividing modules, to the antennas for being radiated. The signal received by the antennas is transmitted to the signal processing unit also through the power dividing modules and switches. The control method determines the mode of use of the antenna module. At first, select a mode of use of the antenna module and switch to the selected mode. Next monitor signal throughput of the switched mode. Then compare the throughput value with a threshold value. If the throughput value is lower than the threshold value, another mode of use is selected.
摘要:
The present invention provides an antenna array structure which includes multiple array elements, and the antenna array structure is using for the application of the WLAN (wireless local area network) or WMAN (wireless metro area network.) Furthermore, the array elements of the present invention are phased arrays or attenuated arrays, and when configuration with different type of the array element is used, the corresponding BFN (beam forming network) can also be implemented in various possibilities. With all the configuration of the present invention, the manufacturers can have a stable array structure for their applications.
摘要:
An antenna device includes a first elliptic reflective surface, a first antenna and a second antenna. The first elliptic reflective surface has a first focus and a second focus. The first antenna is disposed on the first focus, and the second antenna is disposed on the second focus. The first antenna transmits a first signal and a second signal, and the second antenna receives the first signal and the second signal. The first signal is transmitted directly to the second antenna from the first antenna. The second signal is reflected by the first elliptic reflective surface and transmitted to the second antenna.
摘要:
A network information access system control method is cooperated with a track, at least an access point (AP) and a server. In this case, the access point is connected to the track. Additionally, the access point has a driving unit and a rolling unit. First step of the method is measuring at least one monitoring signal parameter by the access point. Then, the access point is to transform the monitoring signal parameter into a loading status parameter. Then, the method is inputting a default parameter into the access point. After that, the access point is comparing the loading status with the default parameter and generating a loading status signal. Finally, the access point is transmitting the loading status signal to the server so as to the server can control the access point moved along the track.