首页> 外国专利> HOST-BASED ANTI-GHOSTING OF TELETEXT DATA BASED ON NON-OVERSAMPLED DATA

HOST-BASED ANTI-GHOSTING OF TELETEXT DATA BASED ON NON-OVERSAMPLED DATA

机译:基于非过采样数据的基于主机的图文电视数据防雾

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 receives the television signal containing the encoded teletext data. A tuner/capture subsystem of the computer system 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 of the computer system via a host interface as non-oversampled data. The host processor performs anti- ghosting, data slicing, and multi-level decoding of the teletext data based on the non-oversampled data.
机译:提供了一种用于使用非过采样的数据在电视信号中执行图文电视数据的基于主机的抗重像的方法和装置。图文电视数据首先使用多级纠错编码在电视信号内进行编码,包括内部纠错码和外部纠错码的使用。然后,在遵守标准图文电视定时的同时,使用多信号电平调制编码来传输电视信号。远程计算机系统接收包含编码的图文电视数据的电视信号。计算机系统的调谐器/捕获子系统对图文电视数据进行过采样,并使用过采样的数据来重构图文电视数据的位峰值。然后,图文电视数据通过主机接口作为非过采样数据提供给计算机系统的主存储器。主机处理器基于非过采样的数据执行图文电视数据的防重影,数据切片和多级解码。

著录项

  • 公开/公告号EP1078512A1

    专利类型

  • 公开/公告日2001-02-28

    原文格式PDF

  • 申请/专利权人 INTEL CORPORATION;

    申请/专利号EP19990911332

  • 发明设计人 CAHILL BENJAMIN M. III;

    申请日1999-03-11

  • 分类号H04N5/21;H04N5/213;H04N5/217;H04N7/08;H04N7/084;H04N7/087;

  • 国家 EP

  • 入库时间 2022-08-22 01:16:03

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