摘要:
In order to improve radio characteristic in a transmitter, there are included a ΔΣ modulation means that ΔΣ modulates a given input signal; and a control means that changes parameters of the ΔΣ modulation means in accordance with a given condition.
摘要:
The disclosed apparatus includes a MAC learning table storing a MAC address and port identification information that uniquely identifies a port for transferring a frame to which the MAC address is assigned. The apparatus includes updating the MAC learning table, reading a MAC address of a link trace frame, transferring the link trace frame via a port determined based on the MAC learning table, storing a correspondence relationship of a predetermined MAC address and port identification information, saving a correspondence relationship set as an object to be deleted at a time of updating the MAC learning table, transferring the link trace frame, if there is no correspondence relationship relevant to the MAC address of the link trace frame in the MAC learning table, and sending a response frame to a switching hub which is an originator of the link trace frame with transfer of the link trace frame.
摘要:
In order to improve radio characteristic in a transmitter, there are included a ΔΣ modulation means that ΔΣ modulates a given input signal; and a control means that changes parameters of the ΔΣ modulation means in accordance with a given condition.
摘要:
A substrate standby unit that is capable of keeping only one substrate 4 on standby in a substrate sorting mechanism 40 that moves the substrate 4 from the print inspection device M2 to the component installation device M4, a memory device 60 that stores a substrate ID on the substrate 4 that is on standby in the substrate standby unit, and a substrate ID management unit 46 that updates the substrate ID that is stored in the memory device 60 accompanying the transfer of the substrate 4 from the print inspection device M2 to the substrate standby unit are included. The substrate ID stored in the memory device 60 and the inspection result data associated with this substrate ID and stored in an inspection result data memory unit 45 are transmitted to the component installation device M4.
摘要:
The electronic component mounting line includes a computing unit for calculating a print position of solder paste printed on board-side electrodes, an electronic component placement device for placing an electronic component onto the board-side electrodes by referencing the print position of the solder paste, a placement position control device for controlling the placement position of the electronic component by referencing the print position of the solder paste, a bonding device for melting the solder paste to bond the electronic component and the board-side electrodes to each other, and a mounting-position control device for controlling the mounting position of the electronic component by referencing the board-side electrode position. In this configuration, position control responsive to displacement of the electronic component by the self alignment effect exerted by the molten solder paste is fulfilled.
摘要:
Provided is a component mounting system and a mounting state inspection method in the component mounting system in which accurate mounting state inspection can be achieved with good operability. A board image capturing operation for image-capturing an inspection range of a board to be inspected to acquire captured image data is executed on the board before and after mounting work is executed on the board by inspection modules M3A and M6A. A difference between pre-mounting image data and post-mounting image data thus acquired is calculated so that each component is extracted by a component extraction processing portion 3a. The shape and position of the extracted component are compared with inspection data indicating the shape and position of a normal component stored in advance so that whether the mounting state of each component on the board is good or not, is determined by a discrimination processing portion 3b. Consequently, unstable elements in a system for recognizing and extracting each component based on color information of the component and the board can be eliminated to achieve accurate mounting state inspection with good operability.
摘要:
A frame transmission device having a port for transmitting and receiving a frame and a learning table for storing a transmission source address included in the frame received at the port and the receiving port in association with each other includes: a port detector for detecting whether learning data coincident with the transmission source address included in the frame received at the port is stored in the learning table; a port judging unit for comparing a port learned in the learning data detected by the port detector to the receiving port; and a loop judging unit for judging on the basis of a time lapse from the storage of the learning data whether the frame is in a loop or not when the port learned in the learning data is not coincident with the receiving port.
摘要:
The disclosed apparatus includes a MAC learning table storing a MAC address and port identification information that uniquely identifies a port for transferring a frame to which the MAC address is assigned. The apparatus includes updating the MAC learning table, reading a MAC address of a link trace frame, transferring the link trace frame via a port determined based on the MAC learning table, storing a correspondence relationship of a predetermined MAC address and port identification information, saving a correspondence relationship set as an object to be deleted at a time of updating the MAC learning table, transferring the link trace frame, if there is no correspondence relationship relevant to the MAC address of the link trace frame in the MAC learning table, and sending a response frame to a switching hub which is an originator of the link trace frame with transfer of the link trace frame.
摘要:
A method for inspection of circuit boards is described which includes: a process of measuring surface-shape data of a circuit board on which inspection objects are placed; an approximated curved surface generation process for generating an approximated curved surface from the measured surface-shape data, which is an estimated surface-shape of the circuit board, on which no inspection object is placed; a process of subtracting said approximated curved surface from the measured surface-shape data; a region of interest determination process of determining regions which are different from the approximated curved surface in accordance with data obtained by said subtraction process; and a process of inspecting whether electronic parts placed on said circuit board and connecting materials for connecting the electronic parts are in a desired state or not.
摘要:
A printer driver that controls operations of an ink jet printer which is capable of being refilled with ink from the outside, causes a computer to execute an acquiring function of acquiring attribute information on a destination country or region where the ink jet printer is to be used, an input function of allowing an ink ID number which is assigned to the ink that is to be refilled to be entered, an ink determining function of determining whether the ink is genuine or not by analyzing the ink ID number which has been entered, a selection/execution function of selecting one of a plurality of processes for a non-genuine ink on the basis of the attribute information, if the ink is determined to be not genuine and executing the selected process.