专利名称：Control of miniature personal digital
assistant using menu and thumbwheel
发明人：Craig Alexander Will申请号：US08/423690申请日：19950418公开号：US05825353A公开日：19981020
摘要：A method and apparatus for control of a handheld miniature personal digitalassistant, based on a user interface with a menu and thumbwheel. The device consists of amicroprocessor, memory, display, thumbwheel, and button. The display presents asequence of menu items, with one such item designated as tentatively selected bydisplaying it in reverse video. Rotating the thumbwheel results in moving the designationof an item in the menu, while pressing the button selects an item. The thumbwheel itselfcan serve as the button if it is pressed rather than rotated. The use of complex menusthat display items in two dimensions allows the use of sophisticated applications,including those that require the entry of alphanumeric data, such as a telephone andaddress directory and datebook. The approach makes such applications feasible in acredit-card-sized package; without the necessity of a keyboard, allowing most of thesurface area of the package to be devoted to a display.
申请人：WILL; CRAIG ALEXANDER
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