05049862 is referenced by 164 patents and cites 6 patents.

A keyboardless portable computer simulates a foldable notepad and has a display which can be reoriented to the convenience of the user, carried in a self-protecting closed position and operated in any convenient open position. The computer has a first flat panel, a second flat panel and hinge means for joining the first panel to the second panel such that the first flat surface is juxtaposed to the second flat surface in a closed position and is disposed side by side in a common plane in one of a selection of open positions. The first flat surface comprises a first digitizer and the second flat surface comprises a second digitizer, and a stylus is provided which is connectable to at least one of the panels for interacting with at least one of the digitizers. One of the digitizers includes a flat panel display through which visual output is provided. Thus, registration of a written symbol on the surface of the panel produces a displayed symbol, preferably at the position of registration. The panels may be detachable at the hinge means, folded back to back to one another for compact usage and a second hinge on a digitizer panel permits a bound paper notebook to be interleaved with a thin digitizer.

Title
Keyless flat panel portable computer--computer aided notebook
Application Number
7/418009
Publication Number
5049862
Application Date
October 6, 1989
Publication Date
September 17, 1991
Inventor
Kenneth R Allen
Palo Alto
CA, US
Jeffrey J Dao
Hillsborough
CA, US
David C Foyt
Belmont
CA, US
James Dao
Hillsborough
CA, US
Agent
Townsend and Townsend
Assignee
Communication Intelligence Corporation
CA, US
IPC
G09G 3/02
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