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AssigneeNEC Corporation
InventorTakashi Abe
Estimating the term…
A wiring connection checking apparatus and method is disclosed by which a connection condition of wiring lines and terminals of parts can be visually checked readily on a screen. When wiring connection information representative of a connection condition of wiring lines and terminals of parts is updated, then a wiring updating detection section detects that contents of the updating relate to increase or decrease of the quantity of terminals of parts connected by a wiring line, and outputs connection increase/decrease information representative of such increase/decrease. A wiring display color changing section of a display color changing section changes a display color of the pertaining wiring line from within the wiring connection information based on the connection increase/decrease information. If necessary, apart terminal display color changing section of the display color changing section changes the display color of a terminal of a part connected by the wiring line. A result of the operation of the display color changing section is displayed on a screen of a display section.
A wiring connection checking apparatus for a CAD system for designing a circuit on a screen, comprising:
A wiring connection checking apparatus for a CAD system for designing a circuit on a screen comprising:
A wiring connection checking method for a CAD system for designing a circuit on a screen, comprising:
A recording medium on which a computer-readable program used for checking a connection of a wiring line in a CAD system for designing a circuit on a screen, the program causing a computer to execute, comprising:
A wiring connection checking method for a CAD system for designing a circuit on a screen, comprising:
A recording medium tangibly embodying a program of machine-readable instructions executable by a computer to perform a method of checking a connection of a wiring line in a CAD system for designing a circuit on a screen, said method comprising:
A wiring connection checking apparatus for a CAD system for designing a circuit on a screen, comprising:
Dependencies are inferred from the claim text.
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Circuit design: circuit design at the physical level
Computing and data processing
Term ended 28 Nov 2021 (estimated)
1. Field of the Invention
The present invention relates to a CAD (computer aided design) system for designing a circuit on a screen of a CRT (cathode ray tube) or the like, and more particularly to a wiring connection checking apparatus and method for checking a connection condition of a wiring line and a recording medium on which a program for the wiring connection checking method is recorded.
2. Description of the Related Art
FIG. 1 is a block diagram of a wiring connection checking apparatus to which the present invention is applied;
FIGS. 2, 3 and 4 are schematic views showing different stages of condition transition of a display on a screen of the wiring connection checking apparatus of FIG. 1; and
FIG. 5 is a flow chart illustrating operation of a display color changing section of the wiring connection checking apparatus of FIG. 1.
Referring first to FIG. 1, there is shown a wiring connection checking apparatus to which the present invention is applied. If wiring connection information 1 representative of a connection condition of wiring lines and terminals of parts is updated, then a wiring updating detection section 2 detects that contents of the updating relate to increase or decrease, that is, variation, of the quantity of terminals of parts connected by a wiring line, and outputs connection increase/decrease information A1 representative of such increase/decrease. A display color changing section 3 changes a display color of the pertaining wiring line from within the wiring connection information 1 based on the connection increase/decrease information A1 (wiring display color changing section 31) and, if necessary, changes the display color of a terminal of a part connected by the wiring line (part terminal display color changing section 32). A result of the operation of the display color changing section 3 is displayed on a screen of a display section 4.
Now, detailed operation of the wiring connection checking apparatus is described with reference to FIGS. 2 to 4 that illustrate an example of condition transition of the display on the screen of the wiring connection checking apparatus. Particularly, operation of the wiring connection checking apparatus when only the wiring display color changing section 31 of the display color changing section 3 operates is described. FIG. 2 illustrates an initial state of the display on the screen. Referring to FIG. 2, parts 100, 200 and 300 are disposed, and a wiring line L1 connects to a terminal 101 of the part 100 and a terminal 201 of the part 200 while another wiring line L2 connects, at one terminal point thereof, to a terminal 301 of the part 300, but is not connected at the other terminal point thereof. In this instance, the quantity of part terminals connected by the wiring line L1 is “2”, and the wiring line L1 is displayed in a display color corresponding to the connection terminal quantity “2”. Meanwhile, the quantity of terminals connected by the wiring line L2 is “1”, and the wiring line L2 is displayed in a display color corresponding to the connection terminal quantity “1”. Here, it is assumed that the display color corresponding to the connection terminal quantity “1” is red and the display color corresponding to the connection terminal quantity “2” is blue.
FIG. 3 shows a display on the screen when the terminal point in the unconnected condition of the wiring line L2 is extended toward the terminal 201 as a result of transition of the condition from that of FIG. 2. It is to be noted that, although the terminal point in question of the wiring line L2 seems connected to the terminal 201 on the screen in FIG. 3, actually it is not in a connected state. In this instance, the wiring connection information 1 is not updated, and consequently, the wiring updating detection section 2 does not output the connection increase/decrease information A1. Accordingly, the display color changing section 3 does not operate, and the display color of the wiring line does not change from that of FIG. 2.