Auto-handler system preventing delivery of integrated circuits t

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Details

36446817, 36446828, 364490, 29705, G06F 1900

Patent

active

057151687

ABSTRACT:
An auto-handler system is constructed by a supply device, a measurement device and a storage device, through which a carrier circulates. A plurality of IC sockets are arranged on the carrier; and an identification mark, such as a bar-code mark, is attached to the carrier. The supply device supplies ICs to the carrier in accordance with the identification mark so that the ICs are mounted respectively on the IC sockets. The carrier is transported to the measurement device wherein measurement is performed on the ICs. After the measurement, the carrier is transported to the storage device wherein the ICs are removed and classified storage is performed on the ICs. Thereafter, a vacant carrier is returned to the supply device. If defective decision is made on the carrier based on result of measurement, the measurement device creates defective information representing position of an defective IC socket of the carrier. Herein, an IC socket is found defective if the result of measurement continuously indicates that a defective category CS appears continuous-defective-times NS. So, if the supply device receives a carrier for which the defective information ICs created, the supply device controls supplying of ICs to IC sockets of the carrier in response to the defective information in such a way that an IC is not supplied to the defective IC socket. Moreover, visual display is performed about the identification mark and positions of IC sockets, to which ICs are supplied, as well as the defective information.

REFERENCES:
patent: 4817273 (1989-04-01), Lape et al.
patent: 4947545 (1990-08-01), Gussman
patent: 5209132 (1993-05-01), Chayamichi et al.
patent: 5475695 (1995-12-01), Caywood et al.

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