Apparatus and method for inserting null packet in digital broadcasting transmission system
US7321602B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 4, 2003 |
| Grant date | Jan 22, 2008 |
| Priority date | — |
| Expiry date | Dec 22, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N21/4348
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A null packet insertion apparatus including a null packet remover for removing an irregularly inserted null packet from an externally received video/audio transport stream; a null packet bit rate calculator for calculating a bit rate of the removed null packet; a GUI for determining the transmission period of a periodic null packet to be newly inserted, based on the calculated bit rate, by an external user; a periodic null packet generator; a multiplexer for regularly inserting the periodic null packet preferentially and inserting the video/audio transport stream with the irregular null packet removed, and performing multiplexing; a non-periodic null packet generator; and a PCR corrector.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.