US 6,725,122 B2Granted

Device and method of selecting photomask manufacturer based on received data

AssigneeRenesas Technology Corp.

InventorsMasayoshi Mori, Yuko Kikuta

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Abstract

A method of selecting a photomask manufacturer includes the steps of storing bidding data sent from a photomask manufacturer, correcting a responded delivery date included in the received bidding data to a corrected delivery date based on a delivery date achieving ratio in a last month, storing priorities relating to a delivery date, technology, order reception and price, reading the corrected delivery date for each of the manufacturers making a bid for a product number to be ordered when the product number is input, calculating total evaluation for each photomask manufacturer based on the plurality of priorities, and selecting the photomask manufacturer satisfying the corrected delivery date and providing the highest result of total evaluation, as the receiver of the order.

Claims18

Dependent claims

A selecting device for selecting a manufacturer of a photomask, comprising:

a communication circuit that communicates with a computer of a manufacturer of said photomask;
a storage circuit that stores data;
and
a control circuit connected to said communication circuit and said storage circuit that controls said communication circuit and said storage circuit, wherein
said control circuit includes a circuit that sends specification data including specifications of said photomask and a requested delivery date to said computer, and said manufacturer receiving said specification data prepares estimation data including a scheduled delivery date of said photomask based on said specifications and said requested delivery date, and sends said prepared estimation data to said selecting device by said computer, and
said control circuit further includes:
a circuit that receives said estimation data and stores the same in said storage circuit,
a circuit that stores delivery data representing results of delivery of the photomasks by said manufacturer in said storage circuit,
a circuit that corrects said scheduled delivery date based on said scheduled delivery date and said results, and stores the corrected delivery date in said storage circuit, and
a select circuit that selects the manufacturer of said photomask based on said requested delivery date and said corrected delivery date.

7 more elements

A selecting device for selecting a manufacturer of a photomask, comprising:

communication means for communication with a computer of a manufacturer of said photomask;
storage means for storing data;
and
control means connected to said communication means and said storage means for controlling said communication means and said storage means, wherein
said control means includes means for sending specification data including specifications of said photomask and a requested delivery date to said computer, and said manufacturer receiving said specification data prepares estimation data including a scheduled delivery date of said photomask based on said specifications and said requested delivery date, and sends said prepared estimation data to said selecting device by said computer, and
said control means further includes:
means for receiving said estimation data and storing the same in said storage means,
means for storing delivery data representing results of delivery of the photomasks by said manufacturer in said storage means,
means for correcting said scheduled delivery date based on said scheduled delivery date and said results, and storing the corrected delivery date in said storage means, and
select means for selecting the manufacturer of said photomask based on said requested delivery date and said corrected delivery date.

7 more elements

A selecting method for selecting a manufacturer of a photomask comprising the steps of:

sending specification data including specifications of said photomask and a requested delivery date to a computer of said manufacturer, said manufacturer receiving said specification data, preparing estimation data including a scheduled delivery date of said photomask based on said specifications and said requested delivery date, and sending said prepared estimation data by the computer of said manufacturer;
receiving and storing said estimation data;
preparing delivery data representing results of delivery of the photomask by said manufacturer;
correcting said scheduled delivery data based on the scheduled delivery data and said result, and storing the corrected delivery data;
and
selecting the manufacturer of said photomask based on said requested delivery date and said corrected delivery date.

3 more elements

Dependencies are inferred from the claim text.