Information retrieval device for displaying and directly refreshing the display of a document
US5511160A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Sep 30, 1993 |
| Grant date | Apr 23, 1996 |
| Priority date | — |
| Expiry date | Sep 30, 2013 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F15/0283
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An information retrieval device displays portions of a document requested by a user. The information retrieval device has a controller connected to a display screen, input selector switches, such as buttons, and non-volatile memory, such as a removable ROM. One or more documents, such as a book or magazine, is stored in the non-volatile memory. When the device is turned on, a first portion of a document is displayed on a display screen. When the user wants to see a different portion of the document, or a different document altogether, she presses one of the buttons. Upon detection that a button was enabled, an action is performed that changes the display on the display screen. The action performs can vary in complexity: it may simply cause the next page of the document to be displayed, or may execute a nested hypertext link to cause related information contained in the same or a different document to update only a portion of the display screen. The document is stored on the non-volatile memory in a manner that allows the display screen to be refreshed directly from the non-volatile memory.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.