Facsimile and static presentation processing – Facsimile – Picture signal generator
Patent
1994-01-04
1996-12-31
Coles, Sr., Edward L.
Facsimile and static presentation processing
Facsimile
Picture signal generator
358406, 382313, H04N 100, H04N 1024
Patent
active
055899510
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
The invention pertains to a pad for scanning data stored on a flat surface in data processing equipment.
During a scanning process, essentially text, figures, drawings, images and designs of a general and/or artistic nature are sensed by means of a scanner in order to be sent to a data processing system after storage in a buffer. In this case the scanner cannot be run arbitrarily across the surface being scanned. Rather a regular control along appropriate path sections is required.
In order not to falsify the result of the scan, contact surfaces, called pads, have been used heretofore that will meet the specific demands of surface characteristics, roll resistance etc. In order to prevent a flat data carrier from sliding during the scan, pads were developed with a transparent surface attached to said carrier. This transparent surface rests in its entirety on the pad due to the attachment provided on one edge of the pad--as a kind of a turned page. However, the transparent surface can also be removed from the pad, in which the connection between pad and transparent surface will naturally remain. A flat data carrier is placed between the pad and the transparent surface, so that a layering of transparent surface on the flat data carrier being scanned on the pad will result. The scanner will be set on the transparent surface and in this manner will scan the data carrier underneath.
However, this kind of pad has the disadvantage that significant parameters for the scanning process will not be ascertained. In particular, the scanner cannot be either adjusted or calibrated. An overview of the storage capacity still available in the buffer, is missing entirely.
SUMMARY OF THE INVENTION
It is an object of the invention to avoid disadvantages of the pad of the above type.
This and other objects will be achieved by a device for scanning a pattern, and including calibration mark means detachable by a scanner, for comparison with parameters of the scanning process. Thus it is possible for the user to optimize the scanning process with assistance from ancillary means. Both the location and motion of the scanner, but also the quality of the scanned document will be known to him at any time. Errors in scanning, that in particular necessitate repeat scans, can be avoided.
In one particularly favorable design of the pad according to this invention, the features are integrated into the pad. Thus the features needed for the comparison will be present for the user at any time. Thus the user will have the potential at any time to monitor the scanning process by means of these features. With regard to a carrier for the data stored on a flat surface, there will be a kind of calibration of the features needed for the comparison.
In another design of the pad, the features are provided structurally separate from the pad. The operator can then limit its comparison with parameters of the scanning process only to a quite specific, necessary and short time period. Only in this time period will the features of the pad be used, otherwise they can be stored at another location and are thus not adverse. A refitting of already existing pads without these features is thus possible at any time.
Another preferred design of the invented pad is characterized by a particular design of the pad such that these features allow an adjustment and/or calibration of the scanner and/or an overview of the scan path with respect to the storage space needed for the particular data being scanned. Thus the operator will be able to optimize the scanning process at any particular time point. The scanning motions required for a larger surface will be tailored to each other. Due to the resultant overview of the scan path with respect to the storage size of the buffer, the operator will know precisely where his scanner is located on the pad. After an interruption of the scanning process, a time-consuming search for the suitable site for resumption of the scanning process will be avoided. The location of the interruption of the scanning
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Coles Sr. Edward L.
Lee Fan
LandOfFree
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