Telegraphy – Systems – Position coordinate determination for writing
Patent
1992-09-29
1995-03-28
Chin, Stephen
Telegraphy
Systems
Position coordinate determination for writing
G08C 2100
Patent
active
054019168
ABSTRACT:
A method and apparatus for electronically capturing handwritten information and for providing a visual feedback to the user of the device to show what has been written. A digitizer is provided for the electronic capture of the handwritten data, and a device comprising multiple superimposed sheets, which coact to produce a visible mark when pressure is applied thereto, is placed over the digitizer to receive a writing impression at the same time that the digitizer does. A mechanical eraser is placed between the sheets to separate them and thereby erase the visible mark which has been made. The eraser also includes a sensing device to sense when an erasure has been made, and to provide a signal indicating that this has been done. In using the device, it is first ascertained that any previous marking has been erased, the desired handwritten entry is then made, and is subsequently erased, to ready the device for its next use.
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U.S. Patent Application Ser. No. 07/575,096, filed Aug. 30, 1990, Inventors David Allgeier et al., for Write Input Transaction Apparatus and Method.
Chin Stephen
Kim Kevin
NCR Corporation
Sessler Jr. Albert L.
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