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OMR glossary
Timing control type
If paper has pre-printed timing marks, the scanning area (reading area) of targeted
mark frames will be determined by such timing marks.
Timing control type is a method to determine the reading zone based on the
timing mark width. Other methods include direct under type, mark to mark type,
and FACOM type.
Example:
Timing control type to scan N times the timing mark width.
Set multiple numbers by using the software controlling OMR.
“FACOM” type
If paper has pre-printed timing marks, the scanning area (reading area) of targeted
mark frames will be determined by such timing marks.
FACOM type is a method of determining the reading zone based on a pair of start
timing and stop timing marks. Other methods include timing control type, direct
under type, and mark to mark type.
N times the width of
a timing mark
N-1 times of the width of
a timing mark
• Top-end timing control type:
Reads n times the width of a timing mark
from the beginning of the timing mark.
• Bottom-end timing control type:
Reads N-1w times the width of a timing
mark from the end of the timing mark.
Reading zone
Start timing
Stop timing
Timing mark
Mark frame
Reading zone
