Wiring design apparatus, wiring determination apparatus and methods thereof

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The International Business Machines Corporation patent solves the following problem:

A wiring design tool that automatically or semi-automatically designed a wiring on a printed circuit substrate or a wiring relationship between the pads on a semiconductor chip and pin (terminal) in a semiconductor package used in some electronic equipment exposed to pupa 5- 143689. a development of wiring route and speed the design disclosed, however, is not determined until the wiring design or not finished wiring on a printed circuit and the same is 100% possible (whether or not a wiring solutions available) by a wiring design apparatus.

Our analysis of this patent is as follows:

International Business Machines Corporation’s patent US 6295634 B1 deals with Wiring design apparatus, wiring determination apparatus and methods thereof.
The present invention relates in general to effectively design a wiring in a semiconductor package, and others, in a short time. A wiring design software (HK) read design information indicating the nature of pads on a chip, disposition of pins in a package, and relationships of correspondence between the pads and the pins, it analyzes Against a wiring problem, put the pads and pins the source and sink elements, and assign a series of numbers to identify the pads and the pins of a same number in recognition assigned to a pad and a pin connected to each other (S102, S108). The wiring design HK a virtual triangular with a source / sink elements as an apex by applying the Delaunay triangulation of the source and sink elements (S110). The wiring design HK levels put the pins in the formed triangle (S200). The wiring design HK determine whether or not an edge of the triangle crosses a wiring and connecting the edges bent over one another to get a route the wiring (S220), outputting the result of wiring design (S118 ).

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System and method for detecting the output of a clock driver

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The Hewlett Packard Company patent solves the following problem:

The present invention generally relates to computer-aided circuit design system, and particularly to a system and method for evaluating a netlist file and their output in a clock driver.

Our analysis of this patent is as follows:

Hewlett Packard Company’s patent US 6295632 B1 deals with System and method for detecting the output of a clock driver.
The present invention is generally directed to a system and method for evaluating a netlist in a conventional sense the output of a clock driver. Based on an image of the invention, a method given for determining whether a circuit node is an output node of a driver circuit clock. strategy includes measures to ensure that the node is a clock node, ensuring that the node is a node in a frequency allocation, recognition of all who bear channel connected to the node, and, for each identified lead, ensuring that a signal that drives a gate node to bring also drives a gate node to a different type carrying . With these early trials satisfied, the method determines the node under consideration of an output node of a driver circuit clock. According to another invention, a method determines a circuit node is an output node of a driver circuit clock by ensuring that the node is a node in a frequency allocation, and ensuring that a gate node each carrying (ie, first take), the channel connected to the node power is connected to a gate node to another carrying , where the other is carrying a different type than the first take. According to yet another aspect of the invention, a corresponding computer readable medium is provided.

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