Pattern generation using wipe solid generator
US5283652A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Oct 30, 1992 |
| Grant date | Feb 1, 1994 |
| Priority date | — |
| Expiry date | Oct 30, 2012 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N5/2622
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method of pattern generation for a screen using a wipe solid generator and a recursive memory includes generating from operator inputs a wipe solid. An extent of the generated wipe solid is measured to produce maximum and minimum values. These maximum and minimum values are extended to encompass a desired border size and softness. A lever-arm scaling function is selected based upon whether a change in operator input causes a reversal in pattern and/or causes the pattern to "breathe." The selected lever-arm scaling function uses prior values from the recursive memory to generate new values that are stored in the recursive memory. From the stored values clip levels are determined such that completion of lever-arm movement to a limit position coincides with completion of the pattern without distortion of the size of the pattern.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.