Abstract: A flyback power converter includes a power transformer, a first lossless voltage conversion circuit, a first low-dropout linear regulator and a secondary side power supply circuit. The first low-dropout linear regulator (LDO) generates a first operation voltage as power supply for being supplied to a sub-operation circuit. The secondary side power supply circuit includes a second lossless voltage conversion circuit and a second LDO. The second LDO generates a second operation voltage. The first operation voltage and the second operation voltage are shunted to a common node. When a first lossless conversion voltage is greater than a first threshold voltage, the second LDO is enabled to generate the second operation voltage to replace the first operation voltage as power supply supplied to the sub-operation circuit; wherein the second lossless conversion voltage is lower than the first lossless switching voltage.

Abstract: A system and method for aligning a probe, such as a wafer-level test probe, with wafer contacts is disclosed. An exemplary method includes receiving a wafer containing a plurality of alignment contacts and a probe card containing a plurality of probe points at a wafer test system. A historical offset correction is received. Based on the historical offset correct, an orientation value for the probe card relative to the wafer is determined. The probe card is aligned to the wafer using the orientation value in an attempt to bring a first probe point into contact with a first alignment contact. The connectivity of the first probe point and the first alignment contact is evaluated. An electrical test of the wafer is performed utilizing the aligned probe card, and the historical offset correction is updated based on the orientation value.

Abstract: One or more overhead cranes are provided. The overhead cranes include a first horizontal rail having a first end and a second end, a second horizontal rail having a third end and a fourth end, a first post connected to the first end of the first horizontal rail, a second post connected to the second end of the first horizontal rail, a third post connected to the third end of the second horizontal rail, a fourth post connected to the fourth end of the second horizontal rail and a cross member extending from the first horizontal rail to the second horizontal rail. The cross member includes a center span section, a first side arm and a second side arm. In some embodiments, the center span section is trapezoidialy shaped. In some embodiments, the overhead crane includes a vacuum system.

Abstract: One or more overhead cranes are provided. The overhead cranes include a first horizontal rail having a first end and a second end, a second horizontal rail having a third end and a fourth end, a first post connected to the first end of the first horizontal rail, a second post connected to the second end of the first horizontal rail, a third post connected to the third end of the second horizontal rail, a fourth post connected to the fourth end of the second horizontal rail and a cross member extending from the first horizontal rail to the second horizontal rail. The cross member includes a center span section, a first side arm and a second side arm. In some embodiments, the center span section is trapezoidialy shaped. In some embodiments, the overhead crane includes a vacuum system.

Abstract: A system and method for aligning a probe, such as a wafer-level test probe, with wafer contacts is disclosed. An exemplary method includes receiving a wafer containing a plurality of alignment contacts and a probe card containing a plurality of probe points at a wafer test system. A historical offset correction is received. Based on the historical offset correct, an orientation value for the probe card relative to the wafer is determined. The probe card is aligned to the wafer using the orientation value in an attempt to bring a first probe point into contact with a first alignment contact. The connectivity of the first probe point and the first alignment contact is evaluated. An electrical test of the wafer is performed utilizing the aligned probe card, and the historical offset correction is updated based on the orientation value.

Abstract: A system and method for aligning a probe, such as a wafer-level test probe, with wafer contacts is disclosed. An exemplary method includes receiving a wafer containing a plurality of alignment contacts and a probe card containing a plurality of probe points at a wafer test system. A historical offset correction is received. Based on the historical offset correct, an orientation value for the probe card relative to the wafer is determined. The probe card is aligned to the wafer using the orientation value in an attempt to bring a first probe point into contact with a first alignment contact. The connectivity of the first probe point and the first alignment contact is evaluated. An electrical test of the wafer is performed utilizing the aligned probe card, and the historical offset correction is updated based on the orientation value.

Abstract: A radio frequency identification (RFID) system employs multiple band transmission to prevent signal collision. The system includes a plurality of RFID tag groups and at least one RFID reader. Each RFID tag group includes at least one RFID tag. The RFID tags of the same RFID tag group are operated for radio frequency transmission in the same transmission frequency band, and those of different RFID tag groups are operated for radio frequency transmission in different transmission frequency bands. When the RFID reader simultaneously receives radio frequency signals issued from RFID tags of different RFID tag groups, since they are transmitted in different transmission frequency bands, signal collision among the RFID tags of the RFID tag groups can be avoided.

Abstract: A system and method for aligning a probe, such as a wafer-level test probe, with wafer contacts is disclosed. An exemplary method includes receiving a wafer containing a plurality of alignment contacts and a probe card containing a plurality of probe points at a wafer test system. A historical offset correction is received. Based on the historical offset correct, an orientation value for the probe card relative to the wafer is determined. The probe card is aligned to the wafer using the orientation value in an attempt to bring a first probe point into contact with a first alignment contact. The connectivity of the first probe point and the first alignment contact is evaluated. An electrical test of the wafer is performed utilizing the aligned probe card, and the historical offset correction is updated based on the orientation value.

Abstract: A mobile RFID (Radio Frequency Identification) system and method are provided to monitor multiple control zones of the system simultaneously through a mobile outpost monitor. The control zones included in the system are connected with each other through a data exchange interface. Each of the control zones includes a link interface connecting with a gateway of at least one RFID tracking module. The gateway connects with at least one RFID reader and a signal transmitter to receive tag information of RFID tags within the control zone, and transmits the tag information through the signal transmitter. When the mobile outpost monitor moves from one control zone to another, the mobile outpost monitor may switch to link with the signal transmitter of the gateway in the current control zone. Through the data exchange interface, the mobile outpost monitor is able to obtain the monitoring information of another control zones.

Abstract: A radio frequency identification (RFID) communication system and method is provided to resolve the power-consuming problems of an active RFID tag while operating at a receiving mode in a long duration. A designated channel is established between the reader and the RFID tag, and also the reader sends a designated message so that the actuated active RFID tag can receive the designated messages and dynamically enter into a receiving mode. Therefore, normal communications may be conducted between the reader and the RFID and the usage period or technical performance can be improved as well.

Abstract: A radio frequency identification (RFID) reader includes a plurality of signal antennas, which are respectively arranged in directions that are not parallel to and co-linear with each other. Each of the signal antennas has a predetermined antenna field pattern and operates with a predetermined carrier wave frequency. A wireless receiver is connected to the signal antennas. A signal conversion unit is connected to the wireless receiver. A frequency generator generates the carrier wave frequency to the signal antenna. A microprocessor is connected to the signal conversion unit and the frequency generator.

Abstract: A method and system is provided to reinforce wireless communication capabilities between multiple network nodes of an wireless network group. The method and system first detects a wireless transmission capability between a first network node and a second network node. When the wireless transmission capability is lower than a threshold value, one set of reinforcing coordinates will be derived by introducing the first geographic information and the second geographic information. Afterwards, move a third network node to a position with the set of reinforcing coordinates to establish an alternative wireless transmission route between the first network note and second network node. Therefore, when an original wireless transmission route between any two network nodes is abnormal, the alternative wireless transmission route will be available in time and reduce the risks of losing transmission signals.

Abstract: A wireless local network reconnecting system and method is provided. The method detects a connection-lost signal generated when a network node of the wireless local network group lost connection. A reconnecting coordinate is calculated according to the connection-lost signal and transmitted to the connection-lost network node through an external communication network. Afterwards, the method guides the connection-lost network node to move to the reconnecting coordinate and reconnect with the wireless local network group wirelessly. Since the external communication network is used to connect with the connection-lost network node, the connection-lost network node is able to reconnect with the wireless local network group through the proposed method.

Abstract: A system and method are provided for multiple nodes to wirelessly transmit in an Ad-hoc network architecture. First of all, an integration module of the system integrates a multi-node transmission protocol into a reservation column of a data packet. Next, an initial node of the system transmits the integrated data packet. Afterwards, according to the multi-node transmission protocol, one or more bridge node of the system receives the integrated data packet transmitted from the initial node. And finally, according to the multi-node transmission protocol, a destination node of the system receives the integrated data packet transmitted from the bridge node. By means of the proposed system and method, data transmission between multiple nodes is achieved under the Ad-hoc network architecture.

Abstract: A wireless connection system and method are provided to connect diverse Ad-hoc network groups. A first Ad-hoc network group has a first network node and a first edge node wirelessly connecting with each other. The second Ad-hoc network group has a second network node and a second edge node wirelessly connecting with each other without connecting the first Ad-hoc network group. The first and second edge nodes have multiple wireless modules respectively. One of the wireless modules is used to connect wireless with other network nodes in the same Ad-hoc network group. The rest extra wireless module(s) is used to connect wirelessly with another extra wireless module(s) of the edge node(s) in different Ad-hoc network group(s). Therefore, the independent first and second Ad-hoc network groups are now capable of wirelessly connecting with each other.

Abstract: A wireless local network reconnecting system and method is provided. The method detects a connection-lost signal generated when a network node of the wireless local network group lost connection. A reconnecting coordinate is calculated according to the connection-lost signal and transmitted to the connection-lost network node through an external communication network. Afterwards, the method guides the connection-lost network node to move to the reconnecting coordinate and reconnect with the wireless local network group wirelessly. Since the external communication network is used to connect with the connection-lost network node, the connection-lost network node is able to reconnect with the wireless local network group through the proposed method.

Abstract: A mobile RFID (Radio Frequency Identification) system and method are provided to monitor multiple control zones of the system simultaneously through a mobile outpost monitor. The control zones included in the system are connected with each other through a data exchange interface. Each of the control zones includes a link interface connecting with a gateway of at least one RFID tracking module. The gateway connects with at least one RFID reader and a signal transmitter to receive tag information of RFID tags within the control zone, and transmits the tag information through the signal transmitter. When the mobile outpost monitor moves from one control zone to another, the mobile outpost monitor may switch to link with the signal transmitter of the gateway in the current control zone. Through the data exchange interface, the mobile outpost monitor is able to obtain the monitoring information of another control zones.

Abstract: A method for identifying an RFID (Radio Frequency IDentification) reader is provided. A first transmission path is defined between a first RFID reader and a host apparatus in a RFID system. A second transmission path is defined between the host apparatus and a second RFID reader adjacent to the first RFID reader. When the host apparatus is identifying the first RFID reader, the first RFID reader sends first identification data of the first RFID reader through the first transmission path to the host apparatus. The first RFID reader also sends first-resent identification data of the first RFID reader through the second transmission path to the host apparatus. The host apparatus identifies the first RFID reader by comparing the first identification data and the first-resent identification data transmitted through the first transmission path and the second transmission path respectively, thereby double confirming the identification data of the first RFID reader.

Abstract: A handheld electronic device and mobile RFID (Radio Frequency Identification) reader equipped thereon allow a user to move to wherever necessary and sense RFID tag data of a target object. The mobile RFID reader includes a microprocessor, a memory unit connected to the microprocessor, a reader positioning unit, a RFID transceiver, a temporary data storage and a network interface. The reader positioning unit positions the location of the RFID reader to obtain reader location information of the RFID reader, and then the RFID transceiver receives a tag signal with tag ID (Identification) data from RFID tag. The reader location information and the tag ID data of the RFID tag are able to be stored optionally in the temporary data storage, and will be uploaded to a backend network sever whenever the RFID reader is connected to the backend network sever through its network interface.

Abstract: A radio frequency identification (RFID) system employs multiple band transmission to prevent signal collision. The system includes a plurality of RFID tag groups and at least one RFID reader. Each RFID tag group includes at least one RFID tag. The RFID tags of the same RFID tag group are operated for radio frequency transmission in the same transmission frequency band, and those of different RFID tag groups are operated for radio frequency transmission in different transmission frequency bands. When the RFID reader simultaneously receives radio frequency signals issued from RFID tags of different RFID tag groups, since they are transmitted in different transmission frequency bands, signal collision among the RFID tags of the RFID tag groups can be avoided.