Method and apparatus for synchronized transmission and reception of data in a digital audio broadcasting system
    41.
    发明授权
    Method and apparatus for synchronized transmission and reception of data in a digital audio broadcasting system 有权
    用于在数字音频广播系统中同步发送和接收数据的方法和装置

    公开(公告)号:US07551675B2

    公开(公告)日:2009-06-23

    申请号:US10377513

    申请日:2003-02-28

    Abstract: A method of transmitting digital audio broadcasting signals comprises the steps of generating a plurality of output frames of information to be transmitted, wherein each of the output frames includes a plurality of blocks of data and each of the output frames is synchronized with an absolute time reference, and transmitting the output frames to a plurality of receivers. Transmitters that broadcast in accordance with the method and receivers that receive the transmitted signal are also disclosed. A method is also provided for receiving digital audio broadcasting signals comprising the steps of receiving a digital audio broadcasting signal comprising a plurality of output frames of information, wherein each of the output frames includes a plurality of blocks of data and each of the output frames is synchronized with an absolute time reference, and determining the start of each output frame relative to an absolute time reference.

    Abstract translation: 一种发送数字音频广播信号的方法包括以下步骤:产生要发送的多个信息输出帧,其中每个输出帧包括多个数据块,并且每个输出帧与绝对时间参考同步 ,并将输出帧发送到多个接收机。 还公开了根据方法广播的发射机和接收发射信号的接收机。 还提供了一种用于接收数字音频广播信号的方法,包括以下步骤:接收包括多个输出信息帧的数字音频广播信号,其中每个输出帧包括多个数据块,并且每个输出帧是 与绝对时间参考同步,并且确定每个输出帧相对于绝对时间参考的开始。

    Method and Apparatus for Implementing Seek and Scan Functions for an FM Digital Radio Signal
    42.
    发明申请
    Method and Apparatus for Implementing Seek and Scan Functions for an FM Digital Radio Signal 有权
    用于实现FM数字无线电信号寻找和扫描功能的方法和装置

    公开(公告)号:US20080298440A1

    公开(公告)日:2008-12-04

    申请号:US11757513

    申请日:2007-06-04

    CPC classification number: H04H20/30 H04H2201/18

    Abstract: A method for detecting a digital radio signal includes the steps of receiving the digital radio signal, developing a correlation waveform having a peak that corresponds to a symbol boundary, normalizing the correlation waveform, calculating a peak value of the normalized correlation waveform, and dwelling on the received digital radio signal when the peak value exceeds a predetermined threshold. A receiver that performs the method is also provided.

    Abstract translation: 一种用于检测数字无线电信号的方法包括以下步骤:接收数字无线电信号,开发具有对应于符号边界的峰值的相关波形,对相关波形进行归一化,计算归一化相关波形的峰值,以及居住在 当峰值超过预定阈值时接收的数字无线电信号。 还提供了执行该方法的接收器。

    EMERGENCY ALERT SECONDARY AUDIO SUBSTITUTION IN DIGITAL RADIO BROADCASTING

    公开(公告)号:US20240364440A1

    公开(公告)日:2024-10-31

    申请号:US18309000

    申请日:2023-04-28

    CPC classification number: H04H20/59 H04H2201/18 H04H2201/20

    Abstract: A method performed by at an importer-exporter of an in-band on-channel (IBOC) digital radio broadcasting system comprises: receiving, from a first audio client, first protocol data units (PDUs) (first PDUs) of encoded main audio and that include first sequence numbers that progress in a first order; sending the first PDUs for transmission over a logical channel of an IBOC waveform; receiving, from a second audio client, second PDUs of encoded non-main audio and that include second sequence numbers; aligning the second PDUs to the first PDUs by aligning the second sequence numbers to the first sequence numbers, to produce aligned second PDUs; and switching to sending the aligned second PDUs for transmission over the logical channel in place of the first PDUs such that the second sequence numbers of the aligned second PDUs after switching maintain the first order of the first sequence numbers as established prior to switching.

    OVER-THE-AIR RADIO BROADCAST SIGNAL METADATA
    45.
    发明申请

    公开(公告)号:US20180041296A1

    公开(公告)日:2018-02-08

    申请号:US15787397

    申请日:2017-10-18

    Abstract: Over-the-air radio broadcast signals are commonly used to deliver a variety of programming content (e.g., audio, etc.) to radio receiver systems. Supplemental data (e.g., metadata) may be provided to radio broadcast receiver systems, where such supplemental data is associated with the programming content delivered via the over-the-air radio broadcast signals. In exemplary embodiments described herein, a radio receiver system receives both (i) primary programming content via over-the-air radio broadcast transmission, and (ii) metadata related to the programming content via wireless Internet. This use of metadata provides a user with an enhanced experience regardless of the type of terrestrial broadcast signal that is received at the user's radio receiver system. Users receiving radio broadcast signals at a receiver system may view images, videos, multimedia displays, text, etc., that is related to the programming content received via the over-the-air radio broadcast signals.

    OVER-THE-AIR RADIO BROADCAST SIGNAL METADATA
    46.
    发明申请

    公开(公告)号:US20170310411A1

    公开(公告)日:2017-10-26

    申请号:US15493605

    申请日:2017-04-21

    Abstract: Over-the-air radio broadcast signals are commonly used to deliver a variety of programming content (e.g., audio, etc.) to radio receiver systems. Supplemental data (e.g., metadata) may be provided to radio broadcast receiver systems, where such supplemental data is associated with the programming content delivered via the over-the-air radio broadcast signals. In exemplary embodiments described herein, a radio receiver system receives both (i) primary programming content via over-the-air radio broadcast transmission, and (ii) metadata related to the programming content via wireless Internet. This use of metadata provides a user with an enhanced experience regardless of the type of terrestrial broadcast signal that is received at the user's radio receiver system. Users receiving radio broadcast signals at a receiver system may view images, videos, multimedia displays, text, etc., that is related to the programming content received via the over-the-air radio broadcast signals.

    Systems and Methods for Providing Messages to Devices Using a Carrier signal

    公开(公告)号:US20170111072A1

    公开(公告)日:2017-04-20

    申请号:US15220027

    申请日:2016-07-26

    Inventor: Jackson Kit WANG

    Abstract: A method is provided that comprises tuning a radio system to a frequency band that contains a locally-broadcast terrestrial radio signal. The locally-broadcast terrestrial radio signal comprising a main signal component and a side data component is thereby received. In response to receiving the locally-broadcast terrestrial radio signal a determination is made as to a permissible time for processing the side data component using a time slot schedule. The side data component is processed at the permissible time. A message corresponding to the side data component is outputted to an output device. In some instances, the side data component includes the message. In other instances, the method further includes searching a message lookup list using a code included in the side data component. When a stored code is found that matches the code, the message corresponding to the matching stored code is outputted.

    Decoding wireless in-band on-channel signals
    50.
    发明授权
    Decoding wireless in-band on-channel signals 有权
    解码无线带内通道信号

    公开(公告)号:US09536535B2

    公开(公告)日:2017-01-03

    申请号:US13977640

    申请日:2012-03-30

    Abstract: Described herein are systems, methods and apparatus for decoding in-band on-channel signals and extracting audio and data signals. Memory requirements are reduced by selectively filtering a bit stream of data in the signal so that services of interest which are encoded therein are processed. A single pool of memory may be shared between physical layer and data link layer processing. Memory in this pool may be allocated dynamically between processing of data at the physical and data link layers. When the available memory is not sufficient to support the required services, the dynamic allocation allows for graceful degradation.

    Abstract translation: 这里描述了用于解码带内通道信号和提取音频和数据信号的系统,方法和装置。 通过选择性地过滤信号中的数据的比特流来减少存储器要求,从而处理其中编码的感兴趣的服务。 可以在物理层和数据链路层处理之间共享单个存储器池。 可以在物理层和数据链路层的数据处理之间动态地分配该池中的存储器。 当可用内存不足以支持所需的服务时,动态分配允许优雅的降级。

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