公开(公告)号：US20170302432A1

公开(公告)日：2017-10-19

申请号：US15099233

申请日：2016-04-14

Applicant: iBiquity Digital Corporation

Inventor： Brian W. Kroeger ,  Paul J. Peyla

IPC: H04L7/00 ,  H04L12/18

CPC classification number: H04L7/0041 ,  H04H20/30 ,  H04H60/12 ,  H04H2201/18 ,  H04L12/18

Abstract: A method for processing a digital audio broadcast signal in a radio receiver, includes: receiving a hybrid broadcast signal; demodulating the hybrid broadcast signal to produce an analog audio stream and a digital audio stream; and using a normalized cross-correlation of envelopes of the analog audio stream and the digital audio stream to measure a time offset between the analog audio stream and the digital audio stream. The time offset can be used to align the analog audio stream and the digital audio stream for subsequent blending of an output of the radio receiver from the analog audio stream to the digital audio stream or from the digital audio stream to the analog audio stream.

公开(公告)号：US09767812B2

公开(公告)日：2017-09-19

申请号：US14226788

申请日：2014-03-26

Applicant: Sirius XM Radio Inc.

Inventor： Paul Marko ,  Deepen Sinha ,  Hariom Aggrawal

IPC: G10L19/008 ,  G10L19/00 ,  H04H60/58 ,  G10L19/02

CPC classification number: G10L19/008 ,  G10L19/00 ,  G10L19/0212 ,  G10L2019/0001 ,  H04H60/58 ,  H04H2201/18

Abstract: Systems and methods for increasing transmission bandwidth efficiency by the analysis and synthesis of the ultimate components of transmitted content are presented. To implement such a system, a dictionary or database of elemental codewords can be generated from a set of audio clips. Using such a database, a given arbitrary song or other audio file can be expressed as a series of such codewords, where each given codeword in the series is a compressed audio packet that can be used as is, or, for example, can be tagged to be modified to better match the corresponding portion of the original audio file. Each codeword in the database has an index number or unique identifier. For a relatively small number of bits used in a unique ID, e.g. 27-30, several hundreds of millions of codewords can be uniquely identified. By providing the database of codewords to receivers of a broadcast or content delivery system in advance, instead of broadcasting or streaming the actual compressed audio signal, all that need be transmitted is the series of identifiers along with any modification instructions to the identified codewords. After reception, intelligence on the receiver having access to a locally stored copy of the dictionary can reconstruct the original audio clip by accessing the codewords via the received IDs, modify them as instructed by the modification instructions, further modify the codewords either individually or in groups using the audio profile of the original audio file (also sent by the encoder) and play back a generated sequence of phase corrected codewords and modified codewords as instructed. In exemplary embodiments of the present invention, such modification can extend into neighboring codewords, and can utilize either or both (i) cross correlation based time alignment and (ii) phase continuity between harmonics, to achieve higher fidelity to the original audio clip.

公开(公告)号：US20170041129A1

公开(公告)日：2017-02-09

申请号：US14817578

申请日：2015-08-04

Applicant: iBiquity Digital Corporation

Inventor： Michael Nekhamkin ,  Hangjun Chen ,  Linlin Li

IPC: H04L7/00 ,  H04B1/10 ,  H04W56/00 ,  H04L12/18 ,  H04B1/16

CPC classification number: H04L7/0041 ,  H04B1/16 ,  H04H20/30 ,  H04H40/18 ,  H04H60/11 ,  H04H2201/18 ,  H04L7/0029 ,  H04L7/0079 ,  H04L12/18 ,  H04L27/2647 ,  H04L27/2662 ,  H04W56/005

Abstract: A method of processing a digital radio broadcast signal in a digital radio receiver includes: receiving baseband signal samples at a first sample rate; adjusting the sample rate of the baseband signals based on a difference between a receiver clock and a transmitter clock to produce adjusted baseband signal samples at a second sample rate; filtering the adjusted baseband signal samples to separate a digital component of the samples and an analog component of the samples, wherein the digital component and the analog component are synchronous; and separately demodulating the digital component and the analog component to produce a digital output signal and an analog output signal. A receiver that uses the method is also provided.

Abstract translation: 一种在数字无线电接收机中处理数字无线电广播信号的方法包括：以第一采样率接收基带信号采样; 基于接收机时钟和发射机时钟之间的差来调整基带信号的采样率，以产生以第二采样率调整的基带信号采样; 对经调整的基带信号采样进行滤波，以分离样本的数字分量和采样的模拟分量，其中数字分量和模拟分量是同步的; 并分别解调数字分量和模拟分量以产生数字输出信号和模拟输出信号。 还提供了使用该方法的接收器。

公开(公告)号：US09337791B1

公开(公告)日：2016-05-10

申请号：US13048428

申请日：2011-03-15

Applicant: David Corts ,  Bryce Wells ,  Paul Signorelli ,  Lee Hunter ,  Terrance Snyder

Inventor： David Corts ,  Bryce Wells ,  Paul Signorelli ,  Lee Hunter ,  Terrance Snyder

IPC: H03G3/00 ,  G06Q30/02 ,  H03G3/20

CPC classification number: H03G3/001 ,  G06F17/30887 ,  G06Q20/123 ,  G06Q30/0269 ,  G06Q30/0271 ,  G06Q30/0272 ,  H03G3/20 ,  H04H20/18 ,  H04H20/28 ,  H04H20/30 ,  H04H20/31 ,  H04H20/93 ,  H04H2201/18

Abstract: A method and system is presented for coordinating the transmission of supplemental digital data to accompany broadcast data, and in particular, analog radio broadcasts, among a plurality of broadcasters. The supplemental digital data may provide information about the particular broadcast data being transmitted (i.e. cut data) or may be supplemental to such data (i.e. news, weather and traffic data). The supplemental digital data to be presented is sorted based on particular algorithms which may take into account broadcaster-specified criteria such as target audience, time of day, type of broadcast data presented, and the like. The supplemental digital data may be audio data, visual data, or audio-visual data for presentation with the broadcast data. The supplemental digital data may further be advertisement data. The advertisement data may be sold by the broadcasters or the party coordinating the IBOC transmission of the supplemental digital data. The supplemental digital data may play simultaneously with muted broadcast data or at a user-specified time.

公开(公告)号：US09219573B2

公开(公告)日：2015-12-22

申请号：US13843956

申请日：2013-03-15

Applicant: iBiquity Digital Corporation

Inventor： Marek Milbar

IPC: H04L1/00 ,  H03M13/00 ,  H04H60/11 ,  H03M13/09 ,  H03M13/33

CPC classification number: H04L1/0045 ,  H03M13/09 ,  H03M13/333 ,  H04H60/11 ,  H04H2201/18 ,  H04L1/0041 ,  H04L1/0057 ,  H04L1/0068 ,  H04L1/0071 ,  H04L1/04 ,  H04L2001/0093

Abstract: A method and apparatus are provided for recovering audio packet location fields and/or frame boundary information from a received digital radio broadcast signal frame in which there are detected errors in the signal frame header by using selected header elements and/or protocol data unit (PDU) structured data block parameters relating to minimum, maximum, and average packet length or PDU length in a scalable recovery process that may be throttled dynamically or configured statically based on available computation resources within a specific implementation and/or at a specific time.

Abstract translation: 提供了一种方法和装置，用于从接收到的数字无线电广播信号帧中恢复音频分组位置字段和/或帧边界信息，其中通过使用选择的报头元素和/或协议数据单元（PDU）来检测信号帧报头中的错误 ）可扩展恢复过程中与最小，最大和平均分组长度或PDU长度有关的结构化数据块参数，其可以基于特定实现中的可用计算资源和/或在特定时间静态地限制。

公开(公告)号：US09129592B2

公开(公告)日：2015-09-08

申请号：US13844096

申请日：2013-03-15

Applicant: iBiquity Digital Corporation

Inventor： Ashwini Pahuja ,  Weifeng Mu

IPC: H03G11/00 ,  G10L19/005 ,  G10L21/0208

CPC classification number: G10L19/005 ,  G10L21/0208 ,  H04H2201/18

Abstract: A method and apparatus are provided for processing a received digital radio broadcast signal to efficiently remove signal interference artifacts from digital and/or analog signals by using signal quality information extracted from audio samples in one or more buffered audio frames to detect audio frames containing clipped noise artifacts and weaker noise artifacts and to selectively apply anti-interference processing to remove the signal interference artifacts.

Abstract translation: 提供了一种用于处理接收到的数字无线电广播信号的方法和装置，以通过使用从一个或多个缓冲音频帧中的音频样本提取的信号质量信息来有效地消除来自数字和/或模拟信号的信号干扰伪影，以检测包含剪切噪声的音频帧 伪影和较弱的噪声伪像，并选择性地应用抗干扰处理以去除信号干扰伪像。

公开(公告)号：US09118430B2

公开(公告)日：2015-08-25

申请号：US13905879

申请日：2013-05-30

Applicant: iBiquity Digital Corporation

Inventor： Muthu Gopal Balasubramanian ,  Rodney Burke ,  Russell Iannuzzelli ,  Steven Andrew Johnson ,  Stephen Douglas Mattson ,  Jeffrey R. Detweiler

IPC: G06F15/16 ,  H04H20/95 ,  H04H60/79 ,  H04H20/06

CPC classification number: H04H20/95 ,  H04H20/06 ,  H04H60/79 ,  H04H2201/18 ,  H04H2201/20

Abstract: A data link manager includes a User Datagram Protocol (UDP) receiver for receiving HD Radio broadcast equipment communication protocol (HDP) data or non-HD Radio broadcast equipment communication protocol (non-HDP) data using a User Datagram Protocol/Internet Protocol (UDP/IP) protocol; a Transmission Control Protocol (TCP) receiver; and a router for receiving data from the UDP receiver and the TCP receiver, for searching for a destination route in a routing table, and for forwarding the data received from the from the UDP receiver and the TCP receiver to an identified destination route.

Abstract translation: 数据链路管理器包括用户数据报协议（UDP）接收器，用于使用用户数据报协议/因特网协议（UDP）接收HD无线广播设备通信协议（HDP）数据或非HD无线电广播设备通信协议（非HDP）数据 / IP）协议; 传输控制协议（TCP）接收机; 以及用于从UDP接收器和TCP接收器接收数据的路由器，用于在路由表中搜索目的地路由，并将从UDP接收机和TCP接收机接收的数据转发到所识别的目的地路由。

公开(公告)号：US08976969B2

公开(公告)日：2015-03-10

申请号：US13172208

申请日：2011-06-29

Applicant: Javier Elenes ,  Dana Taipale ,  Dave Anderton

Inventor： Javier Elenes ,  Dana Taipale ,  Dave Anderton

IPC: H04L27/00 ,  H04H40/18

CPC classification number: H04H40/18 ,  H04H2201/18

Abstract: A method and apparatus is disclosed in which delay is applied to analog-sourced audio in a radio simulcast when the analog signal initially leads the digital signal. A radio receiver is configured to receive a simulcast radio program broadcast with an analog signal and a digital signal. The program content can be extracted from either the analog or digital signals, with the audio source eventually being blended to the digital signal. Audio is initially provided based on the analog signal. If the analog signal is initially leading the digital signal, delay is applied a data stream corresponding to the analog signal relative to a data stream corresponding to the digital signal. Delay applied to the data stream corresponding to the analog signal is increased at a rate that avoids audio artifacts of the output audio. The blend is performed when the data streams are aligned in time.

Abstract translation: 公开了一种方法和装置，其中当模拟信号最初引导数字信号时，在无线电联播中将延迟应用于模拟源音频。 无线电接收机被配置为接收用模拟信号和数字信号广播的同播广播节目。 可以从模拟或数字信号中提取节目内容，音频源最终被混合到数字信号中。 最初根据模拟信号提供音频。 如果模拟信号最初引导数字信号，则延迟相对于与数字信号对应的数据流对应于模拟信号的数据流。 对应于模拟信号的数据流的延迟以避免输出音频的音频伪像的速率增加。 当数据流在时间上对齐时执行混合。

公开(公告)号：US20140281835A1

公开(公告)日：2014-09-18

申请号：US13843956

申请日：2013-03-15

Applicant: IBIQUITY DIGITAL CORPORATION

Inventor： Marek Milbar

IPC: H04L1/00

CPC classification number: H04L1/0045 ,  H03M13/09 ,  H03M13/333 ,  H04H60/11 ,  H04H2201/18 ,  H04L1/0041 ,  H04L1/0057 ,  H04L1/0068 ,  H04L1/0071 ,  H04L1/04 ,  H04L2001/0093

Abstract: A method and apparatus are provided for recovering audio packet location fields and/or frame boundary information from a received digital radio broadcast signal frame in which there are detected errors in the signal frame header by using selected header elements and/or protocol data unit (PDU) structured data block parameters relating to minimum, maximum, and average packet length or PDU length in a scalable recovery process that may be throttled dynamically or configured statically based on available computation resources within a specific implementation and/or at a specific time.

Abstract translation: 提供了一种方法和装置，用于从接收到的数字无线电广播信号帧中恢复音频分组位置字段和/或帧边界信息，其中通过使用选择的报头元素和/或协议数据单元（PDU）来检测信号帧报头中的错误 ）可扩展恢复过程中与最小，最大和平均分组长度或PDU长度有关的结构化数据块参数，其可以基于特定实现中的可用计算资源和/或在特定时间静态地限制。

公开(公告)号：US20140012570A1

公开(公告)日：2014-01-09

申请号：US13977640

申请日：2012-03-30

Applicant: Dongsheng Bi ,  Bomiraj Ravindran ,  Bassel Haddad

Inventor： Dongsheng Bi ,  Bomiraj Ravindran ,  Bassel Haddad

IPC: G10L19/16

CPC classification number: G10L19/167 ,  H04H20/426 ,  H04H2201/18 ,  H04N7/24 ,  H04N21/4382 ,  H04N21/4435 ,  H04N2007/246

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。