发明名称 |
HOST-BASED ANTI-GHOSTING OF TELETEXT DATA BASED ON NON-OVERSAMPLED DATA |
摘要 |
A method and apparatus are provided for performing host-based anti-ghosting of teletext data in a television signal using non-oversampled data. Teletext data is first encoded within a television signal using multi-level error correction encoding, including the use of an inner correction code and an outer correction code. The television signal is then transmitted using multiple signal level modulation encoding, while adhering to the standard teletext timing. A remote computer system (1) receives the television signal containing the encoded teletext data. A tuner/capture subsystem (20) of the computer system (1) oversamples the teletext data and uses the oversampled data to reconstruct the bit peaks of the teletext data. The teletext data are then provided to a main memory (11) of the computer system (1) via a host interface (14) as non-oversampled data. The host processor (10) performs anti-ghosting, data slicing, and multi-level decoding of the teletext data based on the non-oversampled data.
|
申请公布号 |
WO9955079(A1) |
申请公布日期 |
1999.10.28 |
申请号 |
WO1999US05366 |
申请日期 |
1999.03.11 |
申请人 |
INTEL CORPORATION;CAHILL, BENJAMIN, M., III |
发明人 |
CAHILL, BENJAMIN, M., III |
分类号 |
H04N5/21;H04N7/025;H04N7/03;H04N7/035;H04N7/083;H04N7/087;H04N7/088;(IPC1-7):H04N5/21;H04N5/213;H04N5/217;H04N7/08;H04N7/084 |
主分类号 |
H04N5/21 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|