摘要:
The present invention is a part mounting device for mounting chip parts on a substrate, comprising a linear motor having a columnar yoke with upper and lower ends thereof pivotably supported on the device, permanent magnets disposed in the vicinity of the columnar yoke and forming with the columnar yoke a magnetic circuit, and a bobbin disposed in the vicinity of the columnar yoke and slidable in the columnar direction of the yoke;a chip part holder fixedly secured to the bobbin and having a vacuum nozzle for picking up and holding chip parts;a mechanism connected to said linear motor for controlling the driving of the linear motor for driving the part holder rapidly for moving chip parts quickly from a first position remote from the position of the substrate on which the chip parts are to be mounted to a third position just before the chip parts are on the substrate and then driving the part holder slowly to move the chip parts from the third position to a second position where the chip parts are on the substrate; anda mechanism connected to the yoke for rotating the yoke in a plane transverse to the columnar direction of the yoke.
摘要:
The present invention relates to a method and apparatus for mounting an electronic part (11) on a circuit board (28). When the part is mounted, a distance between the under surface of a part maintaining section (12) and the circuit board (38) is measured. Determination that the electronic part (11) is normally mounted on the circuit board (28) is made by comparing the measured distance with the thickness of the electronic part (11) measured in advance.
摘要:
A location information server system for acquiring the status of a user terminal in wireless communication network, comprising: a plurality of sensor means capable of communicating through a network; a priority database to location information from each sensor means; location information selecting means for selecting a location information having a high priority from overlapping location information with reference to the database; and a sensor information integration processing means which integrates acquisition information from at least two sensor means of the sensor means for acquiring the location information and the sensor means for acquiring identification information of a user terminal, and acquires the user terminal position wherein information from each means is accumulated in the location information server as terminal location information database and the location information server means includes a location information providing means capable of providing the sensor information to a predetermined network server which switches communication in the user terminal.
摘要:
The present invention is a wireless communications system for simultaneously establishing a basic access network and a wireless access network using at least two kinds of wireless communication networks. The basic access network executes signaling communication in which communication is controlled so as to be continuously switched, whereas the wireless access network executes data communications other than the signaling communication. Then, a wireless communication terminal is provided with a position obtaining means and sends position information to a server, thereby it is possible to switch to an optimum network.
摘要:
There is disclosed an arrangement wherein an analog signal input terminal converts an input analog signal to a digital signal and transmits the digital signal to a host computer via a network, while a digital signal generated by the host computer is transmitted through the network to an analog signal output terminal and converted therein to an analog signal to be outputted. There are provided two connections of upstream and downstream sockets between the host computer and the analog signal input/output device. These connections are selectively used to realize excellent communication of control signals and data. Particularly, such analog signals may include input signals from a microphone, output signals to a speaker, and input/output data to/from a sensor, a measuring device and the like.
摘要:
The present invention is a wireless communications system for simultaneously establishing a basic access network and a wireless access network using at least two kinds of wireless communication networks. The basic access network executes signaling communication in which communication is controlled so as to be continuously switched, whereas the wireless access network executes data communications other than the signaling communication. Then, a wireless communication terminal is provided with a position obtaining means and sends position information to a server, thereby it is possible to switch to an optimum network.
摘要:
A fluid rotating apparatus according to the present invention is designed to promptly achieve an extremely high degree of vacuum from promptly atmospheric pressure promptly by its single apparatus. Moreover, high-speed synchronous rotation of the rotary shafts of the apparatus is controlled by use of a rotary position detecting sensor, to thereby avoid control mechanical contact thereof with a gear or the like. In addition, hydrostatic bearing are employed for supporting the rotary shafts to avoid of mechanical abrasion and the use of lubricant oil.
摘要:
The present invention is a wireless communications system for simultaneously establishing a basic access network and a wireless access network using at least two kinds of wireless communication networks. In the basic access network, there are executed signaling communication for obtaining available network information based on the position information of a terminal and communication by SIP (Session Initiation Protocol) for executing exchange of a subscribe request signal between terminals and negotiation of communication. This arrangement makes it possible to connect between terminals by a media application on peer to peer.
摘要:
Wireless communication system includes wireless communication terminal, basic access network terminal and network server and the basic access network terminal and wireless communication terminal have a communication path. This configuration provides simple, smooth hand over technology between different kinds of networks and hand off technology for hand off of service between terminals located nearby physically and further wireless communication system which integrates these.
摘要:
A gateway (GW) and a plurality of foreign agents (FA) are connected in a ring-like manner, and the procedures of (1) the GW receiving an IP packet, addressed from a corresponding node CN to a mobile node MNa; (2) the GW transferring the packet to a link L1 in one direction; (3) an FA1 transferring the received packet to a link L2 in the same direction; (4) FA1 furthermore transferring the received packet to a link L4, connected to MNa, if the destination address of the received packet is already registered in the visitor list; (5) an FA2 transferring the received packet to a link L3 in the same direction; (6) FA2 furthermore ending the process as it is if the destination address of the received packet is not registered; and (7) the GW discarding the received packet.