G - Physics – 06 – K
Patent
G - Physics
06
K
352/53.74
G06K 1/00 (2006.01) G06K 1/12 (2006.01) G06K 7/016 (2006.01) G06K 7/10 (2006.01) G06K 19/06 (2006.01)
Patent
CA 2011296
PRESENCE/ABSENCE BAR CODE ABSTRACT OF THE DISCLOSURE A single width bar code exhibiting inherent self clocking characteristics is provided so as to be particularly useful in the identification of semiconductor wafers in very large scale integrated circuit manufacturing processes. The codes described herein are robust, reliable and highly readable even in the face of relatively high variations in scanning speed The codes are also desirably dense in terms of character representations per linear centimeter, an important consideration in semiconductor manufacturing wherein space on the chips and the wafer is at a premium. Additionally, a preferred embodiment of the present invention exhibits a minimum number for the maximum number of spaces between adjacent bars in code symbol sequences. P09-89-002
Bossen Douglas C.
Chen Chin L.
Dill Frederick H.
Goodman Douglas S.
Hsiao Mu Y.
Barrett B.p.
International Business Machines Corporation
LandOfFree
Presence/absence bar code does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Presence/absence bar code, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Presence/absence bar code will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-1938041