Portable information terminal

Details Portable information terminal Portable information terminal

1995-08-16

1997-07-08

Liang, Regina D.

Computer graphics processing and selective visual display system

Display peripheral interface input device

Touch panel

345169, 455575, G09G 500

Patent

active

056466498

ABSTRACT:
In a unit body of a portable information terminal is assembled a display and a pressure-sensitive input device overlying the display. An opening and closing cover is attached to the unit body for covering the pressure-sensitive input device. An operating button device provided in the cover exposes, when the cover is closed, its operating surface from the surface of the cover. The operating button device exerts a pressing force applied to the operating surface onto the surface of the pressure-sensitive input device. Thus, with the cover closed, major function entry or data entry can be carried out.

REFERENCES:
patent: 4703160 (1987-10-01), Narishima et al.
patent: 5303291 (1994-04-01), Takagi et al
patent: 5327584 (1994-07-01), Adachi et al.
patent: 5335273 (1994-08-01), Takagi et al.
patent: 5337346 (1994-08-01), Uchikura
patent: 5367453 (1994-11-01), Capps et al.
patent: 5414444 (1995-05-01), Britz
patent: 5422656 (1995-06-01), Allard et al.

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