Closed-caption broadcasting and displaying method and apparatus suitable for syllable characters
US6130722A · kind A · utility
8Cited by
2References
27Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 5, 1997 |
| Grant date | Oct 10, 2000 |
| Priority date | — |
| Expiry date | May 5, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N21/4884
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A closed-caption broadcasting and displaying method and apparatus. According to the closed-caption broadcasting method and apparatus, a caption signal including character information and control information is encoded in a scanning line of each field of a television broadcasting signal to be transmitted, which does not affect the television broadcasting signal. Control information on the writing direction and display position among the control information is repeatedly transmitted at predetermined intervals.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.