公开(公告)号：US20100283912A1

公开(公告)日：2010-11-11

申请号：US12767396

申请日：2010-04-26

Applicant: Shan-Cheng Sun ,  Chien-Jen Hung ,  Jiun-Ren Wang ,  Tai-Lai Tung

Inventor： Shan-Cheng Sun ,  Chien-Jen Hung ,  Jiun-Ren Wang ,  Tai-Lai Tung

IPC: H04N5/455 ,  H04L27/06

CPC classification number: H04N21/4382 ,  H04L1/0071 ,  H04L27/2649 ,  H04N21/4147

Abstract: An apparatus for demodulating a digital video signal applied to a receiving end of an Orthogonal Frequency-Division Multiplexing (OFDM) communication system is provided. The apparatus receives a plurality of OFDM symbols, and stores a plurality of data sequences in an external memory. The apparatus includes a de-interleaver, that de-interleaves the data sequences to generate a plurality of de-interleaved data sequences; a decoder, coupled to the de-interleaver, that generates a plurality of data streams according to the de-interleaved data sequences; a reconstruction apparatus, coupled to the decoder, that reconstructs the data streams into a transport stream; and a memory interface unit, coupled to the external memory, that accesses the data sequences and the data streams from the external memory. The external memory includes a de-interleaving buffer that stores the data sequence, and a data reconstructing buffer that stores the data streams.

Abstract translation: 提供一种用于解调施加到正交频分复用（OFDM）通信系统的接收端的数字视频信号的装置。 该装置接收多个OFDM符号，并将多个数据序列存储在外部存储器中。 该装置包括解交织器，其对数据序列进行解交织以产生多个解交织数据序列; 耦合到去交织器的解码器，其根据解交织的数据序列生成多个数据流; 耦合到解码器的重建装置，将数据流重建为传输流; 以及耦合到外部存储器的存储器接口单元，其从外部存储器访问数据序列和数据流。 外部存储器包括存储数据序列的解交织缓冲器和存储数据流的数据重建缓冲器。

公开(公告)号：US09025674B2

公开(公告)日：2015-05-05

申请号：US12766268

申请日：2010-04-23

Applicant: Yi-Ying Liao ,  Chien-Jen Hung ,  Tai-Lai Tung

Inventor： Yi-Ying Liao ,  Chien-Jen Hung ,  Tai-Lai Tung

IPC: H04N7/12 ,  H04L27/00 ,  H04L27/28 ,  H04L27/06 ,  H04L7/00 ,  H04N21/43 ,  H04N21/434 ,  H04N21/4385

CPC classification number: H04N21/4305 ,  H04L27/00 ,  H04L27/06 ,  H04L27/28 ,  H04N7/12 ,  H04N21/4344 ,  H04N21/4346 ,  H04N21/4385

Abstract: An apparatus for reconstructing digital video data stream reconstructs a transport stream from a first data stream and a second data stream. Both of the first data stream and the second data stream comprise a plurality of packets, a plurality of input stream time reference (ISCR) values, and a plurality of deleted null packet (DNP) values. The apparatus includes a packet interval detector, that estimates a packet interval according to the first data stream or the second data stream; an alignment unit, that generates an alignment signal according to the ISCR values and the packet interval; an oscillator, coupled to the packet interval detector, that generates an output pulse signal; and a reconstruction controller, that reconstructs the transport stream from the first data stream and the second data stream and outputs the transport stream according to the alignment signal and the output pulse signal. The alignment unit includes a fine tuner for fine tuning a frequency of the output pulse signal according to the ISCR values and a local count.

Abstract translation: 用于重建数字视频数据流的装置从第一数据流和第二数据流重构传输流。 第一数据流和第二数据流都包括多个分组，多个输入流时间基准（ISCR）值和多个删除的空分组（DNP）值。 该装置包括分组间隔检测器，其根据第一数据流或第二数据流估计分组间隔; 对准单元，其根据ISCR值和分组间隔生成对准信号; 耦合到分组间隔检测器的振荡器，其生成输出脉冲信号; 以及重建控制器，其重建来自第一数据流和第二数据流的传输流，并根据对准信号和输出脉冲信号输出传输流。 对准单元包括精细调谐器，用于根据ISCR值和本地计数微调输出脉冲信号的频率。

公开(公告)号：US20100284472A1

公开(公告)日：2010-11-11

申请号：US12766268

申请日：2010-04-23

Applicant: Yi-Ying Liao ,  Chien-Jen Hung ,  Tai-Lai Tung

Inventor： Yi-Ying Liao ,  Chien-Jen Hung ,  Tai-Lai Tung

IPC: H04N7/12

CPC classification number: H04N21/4305 ,  H04L27/00 ,  H04L27/06 ,  H04L27/28 ,  H04N7/12 ,  H04N21/4344 ,  H04N21/4346 ,  H04N21/4385

Abstract: An apparatus for reconstructing digital video data stream reconstructs a transport stream from a first data stream and a second data stream. Both of the first data stream and the second data stream comprise a plurality of packets, a plurality of input stream time reference (ISCR) values, and a plurality of deleted null packet (DNP) values. The apparatus includes a packet interval detector, that estimates a packet interval according to the first data stream or the second data stream; an alignment unit, that generates an alignment signal according to the ISCR values and the packet interval; an oscillator, coupled to the packet interval detector, that generates an output pulse signal; and a reconstruction controller, that reconstructs the transport stream from the first data stream and the second data stream and outputs the transport stream according to the alignment signal and the output pulse signal. The alignment unit includes a fine tuner for fine tuning a frequency of the output pulse signal according to the ISCR values and a local count.

Abstract translation: 用于重建数字视频数据流的装置从第一数据流和第二数据流重构传输流。 第一数据流和第二数据流都包括多个分组，多个输入流时间基准（ISCR）值和多个删除的空分组（DNP）值。 该装置包括分组间隔检测器，其根据第一数据流或第二数据流估计分组间隔; 对准单元，其根据ISCR值和分组间隔生成对准信号; 耦合到分组间隔检测器的振荡器，其生成输出脉冲信号; 以及重建控制器，其重建来自第一数据流和第二数据流的传输流，并根据对准信号和输出脉冲信号输出传输流。 对准单元包括精细调谐器，用于根据ISCR值和本地计数微调输出脉冲信号的频率。