Process for compensating for the position of a camera in a chip

Details Process for compensating for the position of a camera in a chip Process for compensating for the position of a camera in a chip

1995-12-27

1998-03-24

Vo, Peter

Metal working

Method of mechanical manufacture

Electrical device making

29721, 29740, 29743, 29834, 294 641, 356394, 382151, H05K 332, H05K 1304, H05K 1308

Patent

active

057298955

ABSTRACT:
Disclosed is a process for mounting chips exactly on a PCB without making a camera coordinate system coincide with a table coordinate system of a rotary-type chip mount system. The process comprises the steps of reading positional difference and angular difference between a camera coordinate system and a table coordinate system as values in the camera coordinate system by means of a jig nozzle, transforming the values to those of the table coordinate system, and using the transformed values as compensation data when mounting chips on PCB.

REFERENCES:
patent: 4978224 (1990-12-01), Kishimoto et al.
patent: 5060366 (1991-10-01), Asai et al.
patent: 5224325 (1993-07-01), Takahashi et al.
patent: 5237622 (1993-08-01), Howell
patent: 5331731 (1994-07-01), Suzuki et al.
patent: 5383270 (1995-01-01), Iwatsuka et al.
patent: 5384956 (1995-01-01), Sakurai et al.
patent: 5570993 (1996-11-01), Onodera et al.

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