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System and program for estimating person-hours required to prepare a pattern film of a circuit to be printed on a board

  • US 6,662,353 B2
  • Filed: 02/28/2002
  • Issued: 12/09/2003
  • Est. Priority Date: 07/12/2001
  • Status: Expired due to Fees
First Claim
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1. An estimation system for estimating person-hours required to prepare a pattern film of a circuit to be printed on a board, the estimation system comprising:

  • a reference pin calculation unit for calculating a number of reference pins on the basis of a total number of pins extending from parts to be integrated on a printed circuit board and a special specification requirement to be applied to a printed circuit;

    an additional pin calculation unit for calculating a number of additional pins on the basis of a signal line wiring method used in preparing a pattern film for the printed circuit;

    a total estimated pin calculation unit for correcting a sum of the number of the reference pins and the number of the additional pins on the basis of design difficulty, which is determined from a number of signal layers to be made in the printed circuit, a number of signal lines arrangeable between adjacent pins and a pin density, to calculate a total estimated number of pins; and

    a person-hour calculation unit for calculating person-hours required to prepare a pattern film of the printed circuit by dividing the total estimated number of the pins by an average number of pins handleable by a design engineer per a unit time.

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