System and method for designing a printed-circuit board
First Claim
1. A system for designing a circuit board, based on circuit board information, noise reduction information, and evaluation information, said circuit board information indicating a board to be used for a circuit board to be designed, a circuit to be laid out on the board, and components to be included in the circuit, said noise reduction information indicating anti-noise solution, said evaluation information indicating electric characteristics of the circuit board in process of designing, said system comprising:
- an input means for receiving said circuit board information, said noise reduction information, and said evaluation information;
noise reduction component addition means for adding noise reduction components to the circuit described in said circuit board information, based on information on noise reduction components described in the received noise reduction information, and for modifying the circuit board information in accordance with the noise reduction components-added circuit;
a layout means for (1) laying out components and routes on the board described by said circuit board information, based on the circuit board information which has been modified by said noise reduction component addition means, and another information on restrictions to the layout described in said noise reduction information, for (2) generating layout information, using locations of the components and the routes laid out on the board as coordinate values, and for (3) further modifying the circuit board information modified by said noise reduction component addition means in accordance with the laid out circuit;
an evaluation means for evaluating electric characteristics of evaluation targets in the circuit described by said layout information and the circuit board information at that moment, based on said evaluation information on the electric characteristics of the circuit board in the process of designing;
rated value modification means for replacing the noise reduction components with other noise reduction components having different rated values, based on information on noise reduction components in said noise reduction information, and for modifying said circuit board information in accordance with the circuit having changed rated values;
a control means for starting said evaluation means every time said layout means completes a layout, and for starting said evaluation means every time said rated value modification means changes a rated value of a noise reduction component in the circuit;
an output means for outputting said circuit board information and said layout information when the electric characteristics of predetermined evaluation targets among the evaluation targets in the circuit described in said circuit board information and said layout information have been fairly evaluated by said evaluation means.
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Accused Products
Abstract
According to the printed-circuit board of the preset invention, the circuit modification unit 120 adds a noise reduction component, based on circuit board information inputted to the design information input unit 106. Then, the layout unit 132 sets a layout after the design rule generation unit 133 generates a design rule. The rated value modification unit 124 determines rated values of noise reduction components in accordance with the layout. Thus, design rule generation, noise reduction component addition, and rated value determination are automatically performed to satisfy the electric characteristics of evaluation targets. Consequently, interactive process in designing is reduced and the efficiency of designing can be realized.
47 Citations
47 Claims
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1. A system for designing a circuit board, based on circuit board information, noise reduction information, and evaluation information, said circuit board information indicating a board to be used for a circuit board to be designed, a circuit to be laid out on the board, and components to be included in the circuit, said noise reduction information indicating anti-noise solution, said evaluation information indicating electric characteristics of the circuit board in process of designing, said system comprising:
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an input means for receiving said circuit board information, said noise reduction information, and said evaluation information; noise reduction component addition means for adding noise reduction components to the circuit described in said circuit board information, based on information on noise reduction components described in the received noise reduction information, and for modifying the circuit board information in accordance with the noise reduction components-added circuit; a layout means for (1) laying out components and routes on the board described by said circuit board information, based on the circuit board information which has been modified by said noise reduction component addition means, and another information on restrictions to the layout described in said noise reduction information, for (2) generating layout information, using locations of the components and the routes laid out on the board as coordinate values, and for (3) further modifying the circuit board information modified by said noise reduction component addition means in accordance with the laid out circuit; an evaluation means for evaluating electric characteristics of evaluation targets in the circuit described by said layout information and the circuit board information at that moment, based on said evaluation information on the electric characteristics of the circuit board in the process of designing; rated value modification means for replacing the noise reduction components with other noise reduction components having different rated values, based on information on noise reduction components in said noise reduction information, and for modifying said circuit board information in accordance with the circuit having changed rated values; a control means for starting said evaluation means every time said layout means completes a layout, and for starting said evaluation means every time said rated value modification means changes a rated value of a noise reduction component in the circuit; an output means for outputting said circuit board information and said layout information when the electric characteristics of predetermined evaluation targets among the evaluation targets in the circuit described in said circuit board information and said layout information have been fairly evaluated by said evaluation means. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
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25. A method for designing a circuit board, based on circuit board information, noise reduction information, and evaluation information, said circuit board information indicating a board to be used for a circuit board to be designed, a circuit to be laid out on the board, and components to be included in the circuit, said noise reduction information indicating anti-noise solution, said evaluation information indicating electric characteristics of the circuit board in process of designing, said method comprising:
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a receiving step for receiving said circuit board information, said noise reduction information, and said evaluation information; a noise reduction component adding step for adding noise reduction components to the circuit described in said circuit load information, based of information on noise reduction components described in the received noise reduction information, and modifying the circuit board information in accordance with the noise reduction components-added circuit; a layout step for laying out components and routes on the board described by said circuit board information, based on the circuit board information which has been modified, and another information on restrictions to the layout described in said noise reduction information, generating layout information, using locations of the components and the routes laid out on the board as coordinate values, and further modifying the circuit board information modified in said noise reduction component adding step in accordance with the laid out circuit; an evaluating step for evaluating electric characteristics of evaluation targets in the circuit described by said layout information and the circuit board information at that moment, based on said evaluation information on the electric characteristics of the circuit board in the process of designing; a rated value modifying step for replacing the noise reduction components with other noise reduction components having different rated values, based on information on noise reduction components in said noise reduction information, and for modifying said circuit board information in accordance with the circuit having changed rated values; and an output step for outputting said circuit board information and said layout information when the electric characteristics of predetermined evaluation targets among the evaluation targets in the circuit described in said circuit board information and said layout information have been fairly evaluated. - View Dependent Claims (26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47)
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Specification