公开(公告)号：US07120924B1

公开(公告)日：2006-10-10

申请号：US09715944

申请日：2000-11-17

申请人： Dan Katcher ,  V. Michael Bove, Jr. ,  Karen Sarachik ,  Paul Milazzo ,  Jon Dakss

发明人： Dan Katcher ,  V. Michael Bove, Jr. ,  Karen Sarachik ,  Paul Milazzo ,  Jon Dakss

IPC分类号： H04N5/445 ,  H04N7/173

CPC分类号： H04N19/93 ,  G06F17/30855 ,  G06F17/30873 ,  G06F17/30882 ,  H04N1/64 ,  H04N21/234318 ,  H04N21/235 ,  H04N21/435 ,  H04N21/4622 ,  H04N21/4722 ,  H04N21/4725 ,  H04N21/4782 ,  H04N21/812 ,  H04N21/854 ,  H04N21/8543 ,  H04N21/8547 ,  H04N21/858 ,  H04N21/8586

摘要： A system and method of receiving information hyperlinked to a television broadcast. The broadcast material is analyzed and one or more regions within a frame are identified. Additional information can be associated with a region, and can be transmitted in encoded form, using timing information to identify the frame with which the information is associated. The system comprising a video source and an encoder that produces a transport stream in communication with the video source, an annotation source, a data packet stream generator that produces encoded annotation data packets in communication with the annotation source and the encoder, and a multiplexer system in communication with the encoder and the data packet stream generator. The encoder provides timestamp information to the data packet stream generator and the data packet stream generator synchronizes annotation data from the annotation source with a video signal from the video source in response to the timestamp information. The multiplexer generates a digital broadcast signal that includes an augmented transport stream from the transport stream and the encoded data packets. A receiver displays the annotation information associated with the video signal in response to a viewer request on a frame by frame basis. A viewer can respond interactively to the material, including performing commercial transactions, by using a backchannel that is provided for interactive communication.

摘要翻译： 一种接收超链接到电视广播的信息的系统和方法。 分析广播资料并识别一帧内的一个或多个区域。 附加信息可以与区域相关联，并且可以使用定时信息以编码形式发送以识别信息与之相关联的帧。 该系统包括视频源和编码器，其产生与视频源通信的传输流，注释源，产生与注释源和编码器通信的编码注释数据分组的数据分组流生成器，以及多路复用器系统 与编码器和数据分组流生成器通信。 编码器向数据分组流生成器提供时间戳信息，并且数据分组流生成器响应于时间戳信息，将来自注释源的注释数据与来自视频源的视频信号同步。 复用器产生包括来自传输流和编码数据分组的增强传输流的数字广播信号。 响应于逐帧的观看者请求，接收器显示与视频信号相关联的注释信息。 观众可以通过使用为交互式通信提供的反向信道来交互地响应材料，包括执行商业交易。

公开(公告)号：US07343617B1

公开(公告)日：2008-03-11

申请号：US09695900

申请日：2000-10-25

申请人： Dan Katcher ,  Andrew Miller ,  Jon Dakss ,  Josh Wachman ,  David Rose ,  V. Michael Bove, Jr. ,  Karen Sarachik ,  Paul Milazzo ,  Jon Altschuler

发明人： Dan Katcher ,  Andrew Miller ,  Jon Dakss ,  Josh Wachman ,  David Rose ,  V. Michael Bove, Jr. ,  Karen Sarachik ,  Paul Milazzo ,  Jon Altschuler

IPC分类号： G06F3/00 ,  G06F13/00 ,  H04N5/445

CPC分类号： H04N5/91 ,  G06F17/30855 ,  G06F17/30873 ,  G06F17/30882 ,  H04N21/234318 ,  H04N21/235 ,  H04N21/435 ,  H04N21/4622 ,  H04N21/4725 ,  H04N21/4782 ,  H04N21/854 ,  H04N21/8543 ,  H04N21/8547 ,  H04N21/858 ,  H04N21/8586

摘要： A system and method of adding hyperlinked information to a television broadcast in which an interactive content icon is used. The broadcast material is analyzed and one or more regions within a frame are identified. Additional information can be associated with a region, and can be transmitted in encoded form, using timing information to identify the frame with which the information is associated. The system comprising a video source and an encoder that produces a transport stream in communication with the video source, an annotation source, a data packet stream generator that produces encoded annotation data packets in communication with the annotation source and the encoder, and a multiplexer system in communication with the encoder and the data packet stream generator. The encoder provides timestamp information to the data packet stream generator and the data packet stream generator synchronizes annotation data from the annotation source with a video signal from the video source in response to the timestamp information. The multiplexer generates a digital broadcast signal that includes an augmented transport stream from the transport stream and the encoded data packets. A receiver displays the annotation information associated with the video signal in response to a viewer request on a frame by frame basis. A viewer can respond interactively to the material, including performing commercial transactions, by using a backchannel that is provided for interactive communication. The interactive content icon can be used to inform a viewer of the presence of hyperlinked information, for teaching the viewer how to use the system, and for informing the viewer about the hyperlinked information.

摘要翻译： 将超链接信息添加到使用交互式内容图标的电视广播中的系统和方法。 分析广播资料并识别一帧内的一个或多个区域。 附加信息可以与区域相关联，并且可以使用定时信息以编码形式发送以识别信息与之相关联的帧。 该系统包括视频源和编码器，其产生与视频源通信的传输流，注释源，产生与注释源和编码器通信的编码注释数据分组的数据分组流生成器，以及多路复用器系统 与编码器和数据分组流生成器通信。 编码器向数据分组流生成器提供时间戳信息，并且数据分组流生成器响应于时间戳信息，将来自注释源的注释数据与来自视频源的视频信号同步。 复用器产生包括来自传输流和编码数据分组的增强传输流的数字广播信号。 响应于逐帧的观看者请求，接收器显示与视频信号相关联的注释信息。 观众可以通过使用为交互式通信提供的反向信道来交互地响应材料，包括执行商业交易。 交互式内容图标可以用于向观看者通知超链接信息的存​​在，用于教导观众如何使用系统，以及向观众通知超链接信息。

公开(公告)号：US07367042B1

公开(公告)日：2008-04-29

申请号：US09694079

申请日：2000-10-20

申请人： Jon Dakss ,  Dan Katcher ,  V. Michael Bove, Jr. ,  Paul Milazzo ,  Karen Sarachik ,  Josh Wachman ,  Andrew Miller

发明人： Jon Dakss ,  Dan Katcher ,  V. Michael Bove, Jr. ,  Paul Milazzo ,  Karen Sarachik ,  Josh Wachman ,  Andrew Miller

IPC分类号： H04N7/173 ,  H04N5/445

CPC分类号： H04N19/93 ,  G06F17/30855 ,  G06F17/30873 ,  G06F17/30882 ,  H04N1/64 ,  H04N21/234318 ,  H04N21/235 ,  H04N21/435 ,  H04N21/4622 ,  H04N21/4722 ,  H04N21/4725 ,  H04N21/4728 ,  H04N21/4782 ,  H04N21/812 ,  H04N21/854 ,  H04N21/8543 ,  H04N21/858 ,  H04N21/8583 ,  H04N21/8586

摘要： A system and method of adding hyperlinked information to a television broadcast. The broadcast material is analyzed and one or more regions within a frame are identified. Additional information can be associated with a region, and can be transmitted in encoded form, using timing information to identify the frame with which the information is associated. The system comprising a video source and an encoder that produces a transport stream in communication with the video source, an annotation source, a data packet stream generator that produces encoded annotation data packets in communication with the annotation source and the encoder, and a multiplexer system in communication with the encoder and the data packet stream generator. The encoder provides timestamp information to the data packet stream generator and the data packet stream generator synchronizes annotation data from the annotation source with a video signal from the video source in response to the timestamp information. The multiplexer generates a digital broadcast signal that includes an augmented transport stream from the transport stream and the encoded data packets. A receiver displays the annotation information associated with the video signal in response to a viewer request on a frame by frame basis. A viewer can respond interactively to the material, including performing commercial transactions, by using a backchannel that is provided for interactive communication.

摘要翻译： 将超链接信息添加到电视广播的系统和方法。 分析广播资料并识别一帧内的一个或多个区域。 附加信息可以与区域相关联，并且可以使用定时信息以编码形式发送以识别信息与之相关联的帧。 该系统包括视频源和编码器，其产生与视频源通信的传输流，注释源，产生与注释源和编码器通信的编码注释数据分组的数据分组流生成器，以及多路复用器系统 与编码器和数据分组流生成器通信。 编码器向数据分组流生成器提供时间戳信息，并且数据分组流生成器响应于时间戳信息，将来自注释源的注释数据与来自视频源的视频信号同步。 复用器产生包括来自传输流和编码数据分组的增强传输流的数字广播信号。 响应于逐帧的观看者请求，接收器显示与视频信号相关联的注释信息。 观众可以通过使用为交互式通信提供的反向信道来交互地响应材料，包括执行商业交易。

公开(公告)号：US08356329B2

公开(公告)日：2013-01-15

申请号：US11937246

申请日：2007-11-08

申请人： Dan Katcher ,  Andrew Miller ,  Jon Dakss ,  Josh Wachman ,  David Rose ,  V. Michael Bove, Jr. ,  Karen Sarachik ,  Paul G. Milazzo ,  Jon Altschuler

发明人： Dan Katcher ,  Andrew Miller ,  Jon Dakss ,  Josh Wachman ,  David Rose ,  V. Michael Bove, Jr. ,  Karen Sarachik ,  Paul G. Milazzo ,  Jon Altschuler

IPC分类号： H04N7/173

CPC分类号： H04N5/91 ,  G06F17/30855 ,  G06F17/30873 ,  G06F17/30882 ,  H04N21/234318 ,  H04N21/235 ,  H04N21/435 ,  H04N21/4622 ,  H04N21/4725 ,  H04N21/4782 ,  H04N21/854 ,  H04N21/8543 ,  H04N21/8547 ,  H04N21/858 ,  H04N21/8586

摘要： A system and method for adding hyperlinked information to a television broadcast in which an interactive content icon is used. The broadcast material is analyzed and one or more regions within a frame are identified. Additional information can be associated with a region, and can be transmitted in encoded form, using timing information to identify the frame with which the information is associated. A receiver displays the annotation information associated with the video signal in response to a viewer request on a frame by frame basis. The interactive content icon can be used to inform a viewer of the presence of hyperlinked information, for teaching the viewer how to use the system, and for informing the viewer about the hyperlinked information.

摘要翻译： 一种将超链接信息添加到使用交互式内容图标的电视广播中的系统和方法。 分析广播资料并识别一帧内的一个或多个区域。 附加信息可以与区域相关联，并且可以使用定时信息以编码形式发送以识别信息与之相关联的帧。 响应于逐帧的观看者请求，接收器显示与视频信号相关联的注释信息。 交互式内容图标可以用于向观看者通知超链接信息的存​​在，用于教导观众如何使用系统，以及向观众通知超链接信息。

公开(公告)号：US07117517B1

公开(公告)日：2006-10-03

申请号：US09697775

申请日：2000-10-26

申请人： Paul G. Milazzo ,  Jon Dakss ,  Karen Sarachik ,  Dan Katcher ,  V. Michael Bove, Jr.

发明人： Paul G. Milazzo ,  Jon Dakss ,  Karen Sarachik ,  Dan Katcher ,  V. Michael Bove, Jr.

IPC分类号： H04N5/445 ,  H04N7/173

CPC分类号： H04N19/93 ,  G06F17/30855 ,  G06F17/30873 ,  G06F17/30882 ,  H04N1/64 ,  H04N21/234318 ,  H04N21/235 ,  H04N21/435 ,  H04N21/4622 ,  H04N21/4722 ,  H04N21/4725 ,  H04N21/4728 ,  H04N21/4782 ,  H04N21/812 ,  H04N21/854 ,  H04N21/8543 ,  H04N21/858 ,  H04N21/8583 ,  H04N21/8586

摘要： A system and method of adding hyperlinked information to a television broadcast. The broadcast material is analyzed and one or more regions within a frame are identified. Additional information can be associated with a region, and can be transmitted in encoded form, using timing information to identify the frame with which the information is associated. The system comprising a video source and an encoder that produces a transport stream in communication with the video source, an annotation source, a data packet stream generator that produces encoded annotation data packets in communication with the annotation source and the encoder, and a multiplexer system in communication with the encoder and the data packet stream generator. The encoder provides timestamp information to the data packet stream generator and the data packet stream generator synchronizes annotation data from the annotation source with a video signal from the video source in response to the timestamp information. The multiplexer generates a digital broadcast signal that includes an augmented transport stream from the transport stream and the encoded data packets. A receiver displays the annotation information associated with the video signal in response to a viewer request on a frame by frame basis. A viewer can respond interactively to the material, including performing commercial transactions, by using a backchannel that is provided for interactive communication.

摘要翻译： 将超链接信息添加到电视广播的系统和方法。 分析广播资料并识别一帧内的一个或多个区域。 附加信息可以与区域相关联，并且可以使用定时信息以编码形式发送以识别信息与之相关联的帧。 该系统包括视频源和编码器，其产生与视频源通信的传输流，注释源，产生与注释源和编码器通信的编码注释数据分组的数据分组流生成器，以及多路复用器系统 与编码器和数据分组流生成器通信。 编码器向数据分组流生成器提供时间戳信息，并且数据分组流生成器响应于时间戳信息，将来自注释源的注释数据与来自视频源的视频信号同步。 复用器产生包括来自传输流和编码数据分组的增强传输流的数字广播信号。 响应于逐帧的观看者请求，接收器显示与视频信号相关联的注释信息。 观众可以通过使用为交互式通信提供的反向信道来交互地响应材料，包括执行商业交易。

公开(公告)号：US08505058B2

公开(公告)日：2013-08-06

申请号：US13180756

申请日：2011-07-12

申请人： Jon Dakss ,  Paul Milazzo ,  Karen Sarachik ,  Allan Kotmel ,  V. Michael Bove, Jr.

发明人： Jon Dakss ,  Paul Milazzo ,  Karen Sarachik ,  Allan Kotmel ,  V. Michael Bove, Jr.

IPC分类号： H04N7/173 ,  H04N7/16 ,  H04N7/00

CPC分类号： H04N21/654 ,  H04H60/13 ,  H04N5/04 ,  H04N5/4401 ,  H04N21/235 ,  H04N21/23614 ,  H04N21/4307 ,  H04N21/4348 ,  H04N21/435 ,  H04N21/6332 ,  H04N21/6543 ,  H04N21/8547

摘要： A synchronization mechanism embeds synchronization triggers into a television signal or stream at regular intervals. The triggers include an accurate representation of the time in which the triggers were embedded. A receiving device decodes the triggers and synchronizes its internal timer based on the triggers. In this regard, the receiving device obtains a reference time from the internal timer and computes an offset between the reference time and the trigger time. The computed offset is then applied to the reference time. With the receipt of each new trigger, the application compares the trigger time to a new reference time with the most recently computed offset value applied. If there is any variance between these two values, the application creates a new smoothed offset.

摘要翻译： 同步机制将同步触发以规则的间隔嵌入电视信号或流中。 触发器包括准确表示触发器被嵌入的时间。 接收设备根据触发器解码触发并同步其内部定时器。 在这方面，接收装置从内部定时器获取参考时间，并计算参考时间和触发时间之间的偏移。 然后将计算的偏移量应用于参考时间。 随着每个新触发器的接收，应用程序将触发时间与新的参考时间进行比较，并应用最近计算的偏移值。 如果这两个值之间有差异，应用程序将创建一个新的平滑偏移。

公开(公告)号：US20110271318A1

公开(公告)日：2011-11-03

申请号：US13180756

申请日：2011-07-12

申请人： Jon Dakss ,  Paul Milazzo ,  Karen Sarachik ,  Allan Kotmel ,  V. Michael Bove, JR.

发明人： Jon Dakss ,  Paul Milazzo ,  Karen Sarachik ,  Allan Kotmel ,  V. Michael Bove, JR.

IPC分类号： H04N21/43

CPC分类号： H04N21/654 ,  H04H60/13 ,  H04N5/04 ,  H04N5/4401 ,  H04N21/235 ,  H04N21/23614 ,  H04N21/4307 ,  H04N21/4348 ,  H04N21/435 ,  H04N21/6332 ,  H04N21/6543 ,  H04N21/8547

摘要： A synchronization mechanism embeds synchronization triggers into a television signal or stream at regular intervals. The triggers include an accurate representation of the time in which the triggers were embedded. A receiving device decodes the triggers and synchronizes its internal timer based on the triggers. In this regard, the receiving device obtains a reference time from the internal timer and computes an offset between the reference time and the trigger time. The computed offset is then applied to the reference time. With the receipt of each new trigger, the application compares the trigger time to a new reference time with the most recently computed offset value applied. If there is any variance between these two values, the application creates a new smoothed offset.

摘要翻译： 同步机制将同步触发以规则的间隔嵌入电视信号或流中。 触发器包括准确表示触发器被嵌入的时间。 接收设备根据触发器解码触发并同步其内部定时器。 在这方面，接收装置从内部定时器获取参考时间，并计算参考时间和触发时间之间的偏移。 然后将计算的偏移量应用于参考时间。 随着每个新触发器的接收，应用程序将触发时间与新的参考时间进行比较，并应用最近计算的偏移值。 如果这两个值之间有差异，应用程序将创建一个新的平滑偏移。

公开(公告)号：US08010986B2

公开(公告)日：2011-08-30

申请号：US11051405

申请日：2005-02-04

申请人： Jon Dakss ,  Paul Milazzo ,  Karen Sarachik ,  Allan Kotmel ,  V. Michael Bove, Jr.

发明人： Jon Dakss ,  Paul Milazzo ,  Karen Sarachik ,  Allan Kotmel ,  V. Michael Bove, Jr.

IPC分类号： H04N7/173 ,  H04N7/16 ,  H04N7/00

CPC分类号： H04N21/654 ,  H04H60/13 ,  H04N5/04 ,  H04N5/4401 ,  H04N21/235 ,  H04N21/23614 ,  H04N21/4307 ,  H04N21/4348 ,  H04N21/435 ,  H04N21/6332 ,  H04N21/6543 ,  H04N21/8547

摘要： A synchronization mechanism embeds synchronization triggers into a television signal or stream at regular intervals. The triggers include an accurate representation of the time in which the triggers were embedded. A receiving device decodes the triggers and synchronizes its internal timer based on the triggers. In this regard, the receiving device obtains a reference time from the internal timer and computes an offset between the reference time and the trigger time. The computed offset is then applied to the reference time. With the receipt of each new trigger, the application compares the trigger time to a new reference time with the most recently computed offset value applied. If there is any variance between these two values, the application creates a new smoothed offset.

摘要翻译： 同步机制将同步触发以规则的间隔嵌入电视信号或流中。 触发器包括准确表示触发器被嵌入的时间。 接收设备根据触发器解码触发并同步其内部定时器。 在这方面，接收装置从内部定时器获取参考时间，并计算参考时间和触发时间之间的偏移。 然后将计算的偏移量应用于参考时间。 随着每个新触发器的接收，应用程序将触发时间与新的参考时间进行比较，并应用最近计算的偏移值。 如果这两个值之间有差异，应用程序将创建一个新的平滑偏移。

公开(公告)号：US20080066129A1

公开(公告)日：2008-03-13

申请号：US11937246

申请日：2007-11-08

申请人： Dan Katcher ,  Andrew Miller ,  Jon Dakss ,  Josh Wachman ,  David Rose ,  V. Michael Bove ,  Karen Sarachik ,  Paul Milazzo ,  Jon Altschuler

发明人： Dan Katcher ,  Andrew Miller ,  Jon Dakss ,  Josh Wachman ,  David Rose ,  V. Michael Bove ,  Karen Sarachik ,  Paul Milazzo ,  Jon Altschuler

IPC分类号： H04N7/173

CPC分类号： H04N5/91 ,  G06F17/30855 ,  G06F17/30873 ,  G06F17/30882 ,  H04N21/234318 ,  H04N21/235 ,  H04N21/435 ,  H04N21/4622 ,  H04N21/4725 ,  H04N21/4782 ,  H04N21/854 ,  H04N21/8543 ,  H04N21/8547 ,  H04N21/858 ,  H04N21/8586

摘要： A system and method of adding hyperlinked information to a television broadcast in which an interactive content icon is used. The broadcast material is analyzed and one or more regions within a frame are identified. Additional information can be associated with a region, and can be transmitted in encoded form, using timing information to identify the frame with which the information is associated. The system comprising a video source and an encoder that produces a transport stream in communication with the video source, an annotation source, a data packet stream generator that produces encoded annotation data packets in communication with the annotation source and the encoder, and a multiplexer system in communication with the encoder and the data packet stream generator. The encoder provides timestamp information to the data packet stream generator and the data packet stream generator synchronizes annotation data from the annotation source with a video signal from the video source in response to the timestamp information. The multiplexer generates a digital broadcast signal that includes an augmented transport stream from the transport stream and the encoded data packets. A receiver displays the annotation information associated with the video signal in response to a viewer request on a frame by frame basis. A viewer can respond interactively to the material, including performing commercial transactions, by using a backchannel that is provided for interactive communication. The interactive content icon can be used to inform a viewer of the presence of hyperlinked information, for teaching the viewer how to use the system, and for informing the viewer about the hyperlinked information.

摘要翻译： 将超链接信息添加到使用交互式内容图标的电视广播中的系统和方法。 分析广播资料并识别一帧内的一个或多个区域。 附加信息可以与区域相关联，并且可以使用定时信息以编码形式发送以识别信息与之相关联的帧。 该系统包括视频源和编码器，其产生与视频源通信的传输流，注释源，产生与注释源和编码器通信的编码注释数据分组的数据分组流生成器，以及多路复用器系统 与编码器和数据分组流生成器通信。 编码器向数据分组流生成器提供时间戳信息，并且数据分组流生成器响应于时间戳信息，将来自注释源的注释数据与来自视频源的视频信号同步。 复用器产生包括来自传输流和编码数据分组的增强传输流的数字广播信号。 响应于逐帧的观看者请求，接收器显示与视频信号相关联的注释信息。 观众可以通过使用为交互式通信提供的反向信道来交互地响应材料，包括执行商业交易。 交互式内容图标可以用于向观看者通知超链接信息的存​​在，用于教导观众如何使用系统，以及向观众通知超链接信息。

公开(公告)号：US06879720B2

公开(公告)日：2005-04-12

申请号：US10820949

申请日：2004-04-08

申请人： Karen Sarachik ,  Jon Dakss ,  V. Michael Bove, Jr. ,  Josh Wachman

发明人： Karen Sarachik ,  Jon Dakss ,  V. Michael Bove, Jr. ,  Josh Wachman

IPC分类号： G06F17/30 ,  H04N1/41 ,  H04N1/64 ,  H04N21/2343 ,  H04N21/235 ,  H04N21/435 ,  H04N21/462 ,  H04N21/4722 ,  H04N21/4725 ,  H04N21/4728 ,  H04N21/4782 ,  H04N21/81 ,  H04N21/854 ,  H04N21/8543 ,  H04N21/858 ,  G06K9/48

CPC分类号： H04N19/93 ,  G06F17/30855 ,  G06F17/30873 ,  G06F17/30882 ,  H04N1/64 ,  H04N21/234318 ,  H04N21/235 ,  H04N21/435 ,  H04N21/4622 ,  H04N21/4722 ,  H04N21/4725 ,  H04N21/4728 ,  H04N21/4782 ,  H04N21/812 ,  H04N21/854 ,  H04N21/8543 ,  H04N21/858 ,  H04N21/8583 ,  H04N21/8586

摘要： A system and method of adding hyperlinked information to a television broadcast. The broadcast material is analyzed and one or more regions within a frame are identified. Additional information can be associated with a region, and can be transmitted in encoded form, using timing information to identify the frame with which the information is associated. The system comprising a video source and an encoder that produces a transport stream in communication with the video source, an annotation source, a data packet stream generator that produces encoded annotation data packets in communication with the annotation source and the encoder, and a multiplexer system in communication with the encoder and the data packet stream generator. The encoder provides timestamp information to the data packet stream generator and the data packet stream generator synchronizes annotation data from the annotation source with a video signal from the video source in response to the timestamp information. The multiplexer generates a digital broadcast signal that includes an augmented transport stream from the transport stream and the encoded data packets. A receiver displays the annotation information associated with the video signal in response to a viewer request on a frame by frame basis. A viewer can respond interactively to the material, including performing commercial transactions, by using a backchannel that is provided for interactive communication.

摘要翻译： 将超链接信息添加到电视广播的系统和方法。 分析广播资料并识别一帧内的一个或多个区域。 附加信息可以与区域相关联，并且可以使用定时信息以编码形式发送以识别信息与之相关联的帧。 该系统包括视频源和编码器，其产生与视频源通信的传输流，注释源，产生与注释源和编码器通信的编码注释数据分组的数据分组流生成器，以及多路复用器系统 与编码器和数据分组流生成器通信。 编码器向数据分组流生成器提供时间戳信息，并且数据分组流生成器响应于时间戳信息，将来自注释源的注释数据与来自视频源的视频信号同步。 复用器产生包括来自传输流和编码数据分组的增强传输流的数字广播信号。 响应于逐帧的观看者请求，接收器显示与视频信号相关联的注释信息。 观众可以通过使用为交互式通信提供的反向信道来交互地响应材料，包括执行商业交易。