公开(公告)号：US07526019B1

公开(公告)日：2009-04-28

申请号：US10402368

申请日：2003-03-27

Applicant: Vladimir Radionov ,  Bin-Fan Liu ,  Yu Kou

Inventor： Vladimir Radionov ,  Bin-Fan Liu ,  Yu Kou

IPC: H03H7/30 ,  H03K5/159

CPC classification number: H04L25/03273 ,  H04L25/0307 ,  H04L25/03076 ,  H04L27/0014 ,  H04L2025/0342 ,  H04L2025/03726

Abstract: A system for providing multi-channel multi-mode QAM equalization and carrier recovery is provided. According to one exemplary embodiment, the system includes an equalization circuit and a carrier recovery circuit operating in a concurrent manner to provide equalization and carrier recovery. The equalization circuit and the carrier recovery circuit each have two operating modes, namely, an acquisition mode and a tracking mode. The carrier recovery circuit evaluates a phase detection error calculated based on signals obtained from the equalization circuit. Based on the evaluation of the phase detection error, the equalization circuit and the carrier recovery circuit are respectively directed to switch operating mode, if appropriate.

Abstract translation: 提供了一种用于提供多通道多模式QAM均衡和载波恢复的系统。 根据一个示例性实施例，该系统包括以并行方式工作的均衡电路和载波恢复电路，以提供均衡和载波恢复。 均衡电路和载波恢复电路各具有两种工作模式，即采集模式和跟踪模式。 载波恢复电路评估基于从均衡电路获得的信号计算出的相位检测误差。 基于相位检测误差的评估，如果适当，均衡电路和载波恢复电路分别针对开关操作模式。

公开(公告)号：US20120307843A1

公开(公告)日：2012-12-06

申请号：US13589827

申请日：2012-08-20

Applicant: Weimin Zhang ,  Bin-Fan Liu

Inventor： Weimin Zhang ,  Bin-Fan Liu

IPC: H04J1/00

CPC classification number: H04N5/44 ,  H04L29/06027 ,  H04L65/604 ,  H04L65/607 ,  H04N19/107 ,  H04N19/12 ,  H04N19/134 ,  H04N19/172 ,  H04N19/40 ,  H04N19/61 ,  H04N19/85 ,  H04N21/4331 ,  H04N21/434 ,  H04N21/4383 ,  H04N21/4384 ,  H04N21/4385 ,  H04N21/482 ,  H04Q2213/13034 ,  H04Q2213/13174 ,  H04Q2213/13248

Abstract: Methods, apparatuses, and systems are presented for switching between channels of encoded media data involving receiving encoded media data including reference frames and dependent frames for a plurality of channels, wherein each dependent frame refers to at least one reference frame. Frames associated with a first channel from the plurality of channels are decoded to generate a decoded signal for the first channel. While decoding frames associated with the first channel, data corresponding to at least one reference frame associated with a second channel from the plurality of channels are stored. In response to a control signal for switching from the first to the second channel, at least one dependent frame associated with the second channel is decoded by utilizing the stored data corresponding to the at least one reference frame associated with the second channel, to generate a decoded signal for the second channel.

Abstract translation: 呈现用于在编码媒体数据的信道之间切换的方法，装置和系统，所述编码媒体数据涉及接收包括用于多个信道的参考帧和相关帧的编码媒体数据，其中每个从属帧指的是至少一个参考帧。 与来自多个通道的第一通道相关联的帧被解码以产生用于第一通道的解码信号。 在解码与第一信道相关联的帧时，存储与来自多个信道的与第二信道相关联的至少一个参考帧的数据。 响应于用于从第一信道切换到第二信道的控制信号，通过利用对应于与第二信道相关联的至少一个参考帧的所存储的数据来解码与第二信道相关联的至少一个相关帧，以产生 第二通道的解码信号。

公开(公告)号：US08687656B2

公开(公告)日：2014-04-01

申请号：US13589827

申请日：2012-08-20

Applicant: Weimin Zhang ,  Bin-Fan Liu

Inventor： Weimin Zhang ,  Bin-Fan Liu

IPC: H04L1/00

CPC classification number: H04N5/44 ,  H04L29/06027 ,  H04L65/604 ,  H04L65/607 ,  H04N19/107 ,  H04N19/12 ,  H04N19/134 ,  H04N19/172 ,  H04N19/40 ,  H04N19/61 ,  H04N19/85 ,  H04N21/4331 ,  H04N21/434 ,  H04N21/4383 ,  H04N21/4384 ,  H04N21/4385 ,  H04N21/482 ,  H04Q2213/13034 ,  H04Q2213/13174 ,  H04Q2213/13248

Abstract: Methods, apparatuses, and systems are presented for switching between channels of encoded media data involving receiving encoded media data including reference frames and dependent frames for a plurality of channels, wherein each dependent frame refers to at least one reference frame. Frames associated with a first channel from the plurality of channels are decoded to generate a decoded signal for the first channel. While decoding frames associated with the first channel, data corresponding to at least one reference frame associated with a second channel from the plurality of channels are stored. In response to a control signal for switching from the first to the second channel, at least one dependent frame associated with the second channel is decoded by utilizing the stored data corresponding to the at least one reference frame associated with the second channel, to generate a decoded signal for the second channel.

Abstract translation: 呈现用于在编码媒体数据的信道之间切换的方法，装置和系统，所述编码媒体数据涉及接收包括用于多个信道的参考帧和相关帧的编码媒体数据，其中每个从属帧指的是至少一个参考帧。 与来自多个通道的第一通道相关联的帧被解码以产生用于第一通道的解码信号。 在解码与第一信道相关联的帧时，存储与来自多个信道的与第二信道相关联的至少一个参考帧的数据。 响应于用于从第一信道切换到第二信道的控制信号，通过利用对应于与第二信道相关联的至少一个参考帧的所存储的数据来解码与第二信道相关联的至少一个相关帧，以产生 第二通道的解码信号。

公开(公告)号：US07388932B1

公开(公告)日：2008-06-17

申请号：US10335209

申请日：2002-12-30

Applicant: WeiMin Zhang ,  Vladimir Radionov ,  Roger Stenerson ,  Bin-Fan Liu ,  Yu Kou

Inventor： WeiMin Zhang ,  Vladimir Radionov ,  Roger Stenerson ,  Bin-Fan Liu ,  Yu Kou

IPC: H03K9/00

CPC classification number: H04L27/0012 ,  H04L1/004 ,  H04L7/0079 ,  H04L25/03006

Abstract: An improved multi-channel demodulator is provided. The improved demodulator includes an automatic gain control, a data buffer and a demodulation engine. Data from various RF channels are processed by the automatic gain control in order to keep the data at their respective constant levels. Output from the automatic gain control is passed to the data buffer for storage. Corresponding data from a selected channel is then processed by the demodulation engine. The improved demodulator is able to operate in any one of three operating modes, namely, a data processing mode, a channel switching mode and a waiting mode. In the data processing mode, the demodulation engine processes the channel data that is currently loaded into the demodulation engine. In the channel switching mode, the demodulation engine stores the current channel data into the data buffer and retrieves and loads channel data from another channel for processing. In addition, status and history information relating to the current channel data is stored into a channel status memory and status and history information relating to the next channel to be processed is retrieved from the channel status memory. In one exemplary aspect, in order to reduce the channel switching time, status and history information relating to the next channel to be processed is preloaded during the previous data processing mode. In the waiting mode, the demodulation engine awaits further processing instructions to decide whether to enter into either the data processing mode or the channel switching mode.

Abstract translation: 提供改进的多通道解调器。 改进的解调器包括自动增益控制，数据缓冲器和解调引擎。 来自各种RF信道的数据由自动增益控制处理，以便将数据保持在它们各自的恒定水平。 自动增益控制的输出传递到数据缓冲区进行存储。 然后由解调引擎处理来自选定信道的对应数据。 改进的解调器能够以三种操作模式中的任一种操作，即数据处理模式，信道切换模式和等待模式。 在数据处理模式中，解调引擎处理当前加载到解调引擎中的信道数据。 在信道切换模式中，解调引擎将当前信道数据存储到数据缓冲器中，并从另一个信道检索和加载信道数据进行处理。 此外，与当前频道数据相关的状态和历史信息被存储到频道状态存储器中，并且从频道状态存储器检索与要处理的下一频道有关的状态和历史信息。 在一个示例性方面，为了减少频道切换时间，在先前的数据处理模式期间预先加载与要处理的下一频道相关的状态和历史信息。 在等待模式中，解调引擎等待进一步的处理指令来决定是进入数据处理模式还是进入信道切换模式。

公开(公告)号：US20050207449A1

公开(公告)日：2005-09-22

申请号：US11084058

申请日：2005-03-17

Applicant: Weimin Zhang ,  Bin-Fan Liu

Inventor： Weimin Zhang ,  Bin-Fan Liu

IPC: H04B7/212 ,  H04H20/77 ,  H04J1/00 ,  H04L12/16 ,  H04L29/06 ,  H04N5/00 ,  H04N7/26 ,  H04N7/50 ,  H04Q11/00 ,  H04H1/04

CPC classification number: H04N5/44 ,  H04L29/06027 ,  H04L65/604 ,  H04L65/607 ,  H04N19/107 ,  H04N19/12 ,  H04N19/134 ,  H04N19/172 ,  H04N19/40 ,  H04N19/61 ,  H04N19/85 ,  H04N21/4331 ,  H04N21/434 ,  H04N21/4383 ,  H04N21/4384 ,  H04N21/4385 ,  H04N21/482 ,  H04Q2213/13034 ,  H04Q2213/13174 ,  H04Q2213/13248

Abstract: Methods, apparatuses, and systems are presented for switching between channels of encoded media data involving receiving encoded media data including reference frames and dependent frames for a plurality of channels, wherein each dependent frame refers to at least one reference frame. Frames associated with a first channel from the plurality of channels are decoded to generate a decoded signal for the first channel. While decoding frames associated with the first channel, data corresponding to at least one reference frame associated with a second channel from the plurality of channels are stored. In response to a control signal for switching from the first to the second channel, at least one dependent frame associated with the second channel is decoded by utilizing the stored data corresponding to the at least one reference frame associated with the second channel, to generate a decoded signal for the second channel.

Abstract translation: 呈现用于在编码媒体数据的信道之间切换的方法，装置和系统，所述编码媒体数据涉及接收包括用于多个信道的参考帧和相关帧的编码媒体数据，其中每个从属帧指的是至少一个参考帧。 与来自多个通道的第一通道相关联的帧被解码以产生用于第一通道的解码信号。 在解码与第一信道相关联的帧时，存储与来自多个信道的与第二信道相关联的至少一个参考帧的数据。 响应于用于从第一信道切换到第二信道的控制信号，通过利用对应于与第二信道相关联的至少一个参考帧的所存储的数据来解码与第二信道相关联的至少一个相关帧，以产生 第二通道的解码信号。

公开(公告)号：US08249113B2

公开(公告)日：2012-08-21

申请号：US11084058

申请日：2005-03-17

Applicant: Weimin Zhang ,  Bin-Fan Liu

Inventor： Weimin Zhang ,  Bin-Fan Liu

IPC: H04L1/00

CPC classification number: H04N5/44 ,  H04L29/06027 ,  H04L65/604 ,  H04L65/607 ,  H04N19/107 ,  H04N19/12 ,  H04N19/134 ,  H04N19/172 ,  H04N19/40 ,  H04N19/61 ,  H04N19/85 ,  H04N21/4331 ,  H04N21/434 ,  H04N21/4383 ,  H04N21/4384 ,  H04N21/4385 ,  H04N21/482 ,  H04Q2213/13034 ,  H04Q2213/13174 ,  H04Q2213/13248

Abstract: Methods, apparatuses, and systems are presented for switching between channels of encoded media data involving receiving encoded media data including reference frames and dependent frames for a plurality of channels, wherein each dependent frame refers to at least one reference frame. Frames associated with a first channel from the plurality of channels are decoded to generate a decoded signal for the first channel. While decoding frames associated with the first channel, data corresponding to at least one reference frame associated with a second channel from the plurality of channels are stored. In response to a control signal for switching from the first to the second channel, at least one dependent frame associated with the second channel is decoded by utilizing the stored data corresponding to the at least one reference frame associated with the second channel, to generate a decoded signal for the second channel.

Abstract translation: 呈现用于在编码媒体数据的信道之间切换的方法，装置和系统，所述编码媒体数据涉及接收包括用于多个信道的参考帧和相关帧的编码媒体数据，其中每个从属帧指的是至少一个参考帧。 与来自多个通道的第一通道相关联的帧被解码以产生用于第一通道的解码信号。 在解码与第一信道相关联的帧时，存储与来自多个信道的与第二信道相关联的至少一个参考帧的数据。 响应于用于从第一信道切换到第二信道的控制信号，通过利用对应于与第二信道相关联的至少一个参考帧的所存储的数据来解码与第二信道相关联的至少一个相关帧，以产生 第二通道的解码信号。