Method and apparatus for freehand annotation and drawings incorporating sound and for compressing and synchronizing sound
US5768607A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 30, 1996 |
| Grant date | Jun 16, 1998 |
| Priority date | — |
| Expiry date | Apr 30, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2203/04804
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method and apparatus creates and plays objects and sound synchronously after eliminating the silent segments of the sound. The method inserts sequence marks into the object and sound data, deletes silent segments of the sound data including the sequence marks that reside in the silent segments, and re-inserts the last deleted sequence mark back into the sound data. In so doing, the system detects the silent segments of the recorded sound stream data and deletes the silent portions from the recorded data. Upon replay of an object and its associated sound, any drawing done during the silent segments are played at the computer's full graphics drawing speed, only slowing down to real-time again when more sounds are encountered. Thus, the system plays "fast while silent" and slows to real-time when sounds are played. This saves the space required to stored the recorded sound, and the user does not have to wait through the silent periods.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.