Abstract: An electronic data display system (EDDS) which includes a computer system for containing a multiple data field environment (MDFE), including portions of displayable data, and at least one tactile display for displaying data contained within the MDFE. The system also includes first and second movable navigation devices. The first device selects data from a first selected portion of the MDFE for display by the tactile display. The second navigation device selects data for display from a second selected portion of the MDFE, the second portion being different from the first selected portion.

Abstract: An electronic data display system (EDDS) which includes a system for containing a multiple data field environment (MDFE) including portions of displayable data; at least first and second displays for displaying data contained within the MDFE, capable of displaying data selected from different portions of the MDFE, wherein at least one of the displays is a tactile display; apparatus for selecting data for display by the first display, from a first portion of the MDFE; and apparatus for selecting data for display by the first display, from a second portion of the MDFE, different from the first portion.

Abstract: A computer mouse for blind users and a method for its use. The mouse has a display area on its upper surface in which a portion of the computer's screen display is reproduced in tactile form, for example by raising and lowering members of an array of pins. A monochrome display is encoded by pin height. A color display may be encoded in various ways. Preferably, lightness is encoded as the range of vertical motion of the pins and hue is encoded as pin motion frequency. A blind user scans the screen display by moving the mouse around on a mouse pad and feeling the relative heights and frequencies of the pins.