Computer graphics processing and selective visual display system – Display peripheral interface input device – Touch panel
Patent
1992-04-30
1993-11-30
Oberley, Alvin E.
Computer graphics processing and selective visual display system
Display peripheral interface input device
Touch panel
178 18, 345156, G09G 302
Patent
active
052669319
ABSTRACT:
A data input apparatus comprising a pen for selectively indicating and inputting desired data; a display unit for displaying an image of the input data; a tablet for obtaining coordinate data by indicating with the pen the position corresponding to a predetermined portion of a pattern displayed on the display unit; means for detecting the coordinate data in response to a downward press of the pen to the tablet, and further detecting the coordinate data in response to an upward lift of the pen from the tablet; means for setting a first region of a predetermined area in the tablet, and also setting a second region which includes the first region and has an area greater than that of the first region; and deciding means for accepting the input data in response to a downward press of the pen to the first region and thereafter settling the input data in response to an upward lift of the pen from the second region. The apparatus is capable of preventing unintentional cancel of the input data that may result from an accidental displacement of the pen-up region beyond-the pen-down region, hence facilitating accurate input of data to consequently realize faster manipulation.
REFERENCES:
patent: 4716542 (1987-12-01), Peltz et al.
patent: 4725694 (1988-02-01), Auer et al.
patent: 4763356 (1988-08-01), Day, Jr. et al.
patent: 5010323 (1991-04-01), Hoffman
patent: 5146049 (1992-09-01), Shima
Oberley Alvin E.
Sammut Charles P.
Shaw, Jr. Philip M.
Sony Corporation
Wu Xiao M.
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