Method and apparatus for displaying an overlay image
US5638501A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 10, 1993 |
| Grant date | Jun 10, 1997 |
| Priority date | — |
| Expiry date | May 10, 2013 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2340/10
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method and apparatus for providing a translucent overlay image over a base image on the screen of a computer system. The method includes the steps of running an application program on a central processing unit (CPU) of a pen computer system to produce a base image in a screen coupled to the CPU; and running an overlay program on the CPU to produce an overlay image on the screen such that portions of the base image which are overlapped by the overlay image are at least partially visible through the overlay image. The overlay program is a computer implemented process comprising the steps of displaying an overlay image on the screen, intercepting screen inputs which contact the overlay image, processing the intercepted screen inputs in the CPU, and updating the application program based on the processed screen inputs. In addition a pen computer system includes a central processing unit (CPU), a screen assembly coupled to the CPU, a mechanism coupled to the screen assembly for displaying a base image on the screen assembly, and a mechanism coupled to the screen assembly for displaying an overlay image on the screen assembly such that portions of the base image which are overlapped by…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.