公开(公告)号：US07945225B2

公开(公告)日：2011-05-17

申请号：US12217812

申请日：2008-07-09

Applicant: Derek J. Small

Inventor： Derek J. Small

IPC: H04B17/02

CPC classification number: H04L27/12 ,  H04H20/30 ,  H04H20/46 ,  H04H2201/183

Abstract: A method and apparatus are disclosed for combining digital sidebands with an FM analog signal for IBOC transmission by a single antenna. Specifically, a high power filter combiner for combining an FM analog and a digital signal of the same channel, or frequency, is disclosed. The combiner has two inputs that respectively receive an FM analog and a digital signal to be transmitted in the same FM channel. The combiner has mild tuned filters interposed between the inputs and the output which are tuned to pass the FM analog signal while reflecting the digital signal such that the passed FM analog signal and the reflected digital signal combine as IBOC, i.e., an FM analog signal with digital sideband signals. The combined IBOC signal is provided at an output of the combiner, capable for transmission through a single antenna.

Abstract translation: 公开了一种用于将数字边带与FM模拟信号组合以通过单个天线进行IBOC传输的方法和装置。 具体地，公开了用于组合FM模拟和相同信道或频率的数字信号的高功率滤波器组合器。 组合器有两个输入，分别接收FM模拟信号和数字信号以在相同的FM信道中传输。 组合器具有介于输入和输出之间的温和调谐滤波器，其被调谐以通过FM模拟信号同时反映数字信号，使得经过的FM模拟信号和反射的数字信号组合为IBOC，即FM模拟信号与 数字边带信号。 组合的IBOC信号提供在组合器的输出端，能够通过单个天线进行传输。

公开(公告)号：US07831222B1

公开(公告)日：2010-11-09

申请号：US11362446

申请日：2006-02-24

Applicant: Randall L. Mullinax ,  Michael Gideon

Inventor： Randall L. Mullinax ,  Michael Gideon

IPC: H04B17/00 ,  H01Q11/12

CPC classification number: H04H20/30 ,  H04H2201/183

Abstract: A method and system are provided for improving the isolation characteristics of a combiner. In a system comprising a digital and analog radio signal combiner and a digital transmitter, an analog transmitter, an antenna, and a reject load coupled to the combiner, adjusting an impedance matching device coupled between the reject load and combiner so as to reduce the energy transmitted from the digital transmitter to the analog transmitter through the combiner.

Abstract translation: 提供了一种用于提高组合器的隔离特性的方法和系统。 在包括耦合到组合器的数字和模拟无线电信号组合器和数字发射机，模拟发射机，天线和拒绝负载的系统中，调整耦合在拒绝负载和组合器之间的阻抗匹配装置，以便降低能量 通过组合器从数字发射机发射到模拟发射机。

公开(公告)号：US07720454B1

公开(公告)日：2010-05-18

申请号：US11582067

申请日：2006-10-17

Applicant: Patrick Clement ,  David Cousinard

Inventor： Patrick Clement ,  David Cousinard

IPC: H04B1/16

CPC classification number: H04B1/28 ,  H04B1/0032 ,  H04H40/18 ,  H04H2201/183

Abstract: A radio frequency (RF) receiver includes an intermediate frequency (IF) mixer that generates an output signal based on mixing a hybrid in-band, on-channel (IBOC) signal with an intermediate frequency signal. An oscillator generates the intermediate frequency signal; wherein the intermediate frequency is less than a bandwidth of the IBOC signal.

Abstract translation: 射频（RF）接收机包括中频（IF）混频器，其基于混合带内同步信道（IBOC）信号和中频信号来产生输出信号。 振荡器产生中频信号; 其中中频小于IBOC信号的带宽。

公开(公告)号：US20100027719A1

公开(公告)日：2010-02-04

申请号：US12219989

申请日：2008-07-31

Applicant: Ashwini Pahuja

Inventor： Ashwini Pahuja

IPC: H04L27/06

CPC classification number: H04L5/06 ,  H04H20/30 ,  H04H60/12 ,  H04H2201/183 ,  H04H2201/186 ,  H04L27/02 ,  H04L27/10 ,  H04L27/2601

Abstract: Methods and systems for temporally aligning audio samples of a digital portion of a radio broadcast signal with audio samples of an analog portion of the radio broadcast signal are disclosed. The methods and systems comprise the steps of receiving a radio broadcast signal having an analog portion and a digital portion; separating the analog portion of the radio broadcast signal from the digital portion of the radio broadcast signal; producing a first plurality of audio samples representative of the analog portion of the radio broadcast signal; retrieving from a memory a stored first time interval corresponding to an approximate time for data representing a first sample of the digital portion to travel through a digital signal path in a receiver, wherein the digital signal path includes a digital demodulator; measuring a second time for data representing the first sample of the digital portion to travel from an input of the digital signal path to an input of the digital demodulator; generating a delay amount for delaying a second plurality of audio samples relative to the first plurality of audio samples such that the second plurality of audio samples is temporally aligned with the first plurality of audio samples by adding the first time to the second time; producing the second plurality of audio samples representative of the digital portion of the radio broadcast signal; delaying the second plurality of audio samples by the delay amount such that the second plurality of audio samples is temporally aligned to within a predetermined amount with the first plurality of audio samples; and digitally combining the first plurality of audio samples with the second plurality of audio samples to produce a combined audio output.

Abstract translation: 公开了将无线电广播信号的数字部分的音频样本与无线电广播信号的模拟部分的音频样本时间对准的方法和系统。 所述方法和系统包括接收具有模拟部分和数字部分的无线电广播信号的步骤; 将无线电广播信号的模拟部分与无线电广播信号的数字部分分开; 产生表示无线电广播信号的模拟部分的第一多个音频样本; 从存储器检索对应于表示数字部分的第一样本的数据的近似时间的存储的第一时间间隔，以在数字信号路径中移动，其中所述数字信号路径包括数字解调器; 测量第二次表示数字部分的第一采样的数据从数字信号路径的输入行进到数字解调器的输入; 产生用于相对于所述第一多个音频样本延迟第二多个音频样本的延迟量，使得所述第二多个音频样本通过将所述第一次添加到所述第二时间而与所述第一多个音频样本在时间上对准; 产生表示无线电广播信号的数字部分的第二多个音频样本; 将所述第二多个音频样本延迟所述延迟量，使得所述第二多个音频样本在所述第一多个音频样本中在时间上对准到预定量; 以及将所述第一多个音频样本与所述第二多个音频样本数字组合以产生组合音频输出。

公开(公告)号：US20090086833A1

公开(公告)日：2009-04-02

申请号：US11863943

申请日：2007-09-28

Applicant: Harvey Chalmers ,  Robert Michaels

Inventor： Harvey Chalmers ,  Robert Michaels

IPC: H04L27/28 ,  H04B17/00 ,  H04L27/00

CPC classification number: H04B17/0085 ,  H04H20/12 ,  H04H20/30 ,  H04H60/07 ,  H04H2201/183 ,  H04H2201/186 ,  H04L5/0007

Abstract: A signal generator includes a memory for storing content information in the form of vectors including in-phase and quadrature elements of an orthogonal frequency division multiplexing waveform, a processor for converting the vectors to a radio frequency signal, and a logic device for controlling the operation of the memory and the processor. The in-phase and quadrature elements represent baseband content of the orthogonal frequency-division multiplexing waveform.

Abstract translation: 信号发生器包括存储器，用于以包括正交频分多路复用波形的同相和正交元素的向量的形式存储内容信息，用于将向量转换为射频信号的处理器和用于控制操作的逻辑器件 的内存和处理器。 同相和正交元件表示正交频分复用波形的基带内容。

公开(公告)号：US07388911B2

公开(公告)日：2008-06-17

申请号：US10912250

申请日：2004-08-04

Applicant: Chandra Mohan ,  Zhiming Zhang ,  Manuel Apraez

Inventor： Chandra Mohan ,  Zhiming Zhang ,  Manuel Apraez

IPC: H03K7/04

CPC classification number: H04H20/30 ,  H04H2201/183

Abstract: An FM broadcast transmitter transmits a broadcast signal having a carrier at a broadcast frequency and sidebands, able to be transmitted at full power, within a transmission bandwidth around the carrier. It includes a source of a modulated FM stereo signal having a carrier at the broadcast frequency and having sidebands with a bandwidth less than the transmission bandwidth representing a stereo signal. It also includes a source of a modulated in-band-on-channel (IBOC) signal, having carrier pulses spaced relative to each other to represent the IBOC digital data signal encoded as a variable pulse width encoded signal, and a bandwidth within the transmission bandwidth not overlapping the FM stereo signal sidebands. A signal combiner combines the modulated FM stereo signal and the modulated IBOC signal to form the broadcast signal.

Abstract translation: FM广播发射机以广播频率的载波和能够以全功率发射的边带在载波周围的传输带宽内发送广播信号。 它包括具有广播频率的载波的调制FM立体声信号的源，并且具有小于表示立体声信号的传输带宽的带宽的边带。 它还包括调制带通信道（IBOC）信号的源，其具有相对于彼此隔开的载波脉冲，以表示被编码为可变脉冲宽度编码信号的IBOC数字数据信号，以及传输内的带宽 带宽不重叠FM立体声信号边带。 信号组合器将调制的FM立体声信号和调制的IBOC信号组合以形成广播信号。

公开(公告)号：US07224939B2

公开(公告)日：2007-05-29

申请号：US10992903

申请日：2004-11-19

Applicant: Kazuo Takayama ,  Shuji Sugahara

Inventor： Kazuo Takayama ,  Shuji Sugahara

IPC: H04B7/00 ,  H04B1/68

CPC classification number: H04H20/30 ,  H04H20/22 ,  H04H20/28 ,  H04H20/72 ,  H04H40/18 ,  H04H40/27 ,  H04H2201/183 ,  H04H2201/20 ,  H04L5/0005

Abstract: An audio broadcast receiving apparatus and an audio broadcast receiving method implemented by the audio broadcast receiving apparatus are disclosed. A tuner simultaneously receives a radio wave in a specific frequency band of the analog audio broadcast and a radio wave of the digital audio broadcast transmitted in parallel with the analog audio broadcast in the specific frequency band. A demodulator retrieves the intended audio information by demodulating the signal received by the tuner. An analog receiving signal bandpass filter selectively passes the receiving signal corresponding to the analog audio broadcast radio wave. An analog receiving signal amplifier outputs an output signal representing an amplified receiving signal that has passed the analog receiving signal bandpass filter to the demodulator, and the gain of the amplifier is controlled in accordance with the level of the same output signal. A digital receiving signal bandpass filter selectively passes the receiving signal corresponding to the digital audio broadcast radio wave. A digital receiving signal amplifier amplifies the receiving signal that has passed through the digital receiving signal bandpass filter with a gain controlled in accordance with the level of the same output signal and outputs the amplified signal to the demodulator.

Abstract translation: 公开了一种由音频广播接收装置实现的音频广播接收装置和音频广播接收方法。 调谐器同时接收模拟音频广播的特定频带中的无线电波和与特定频带中的模拟音频广播并行发送的数字音频广播的无线电波。 解调器通过解调由调谐器接收的信号来检索预期音频信息。 模拟接收信号带通滤波器选择性地传递对应于模拟音频广播无线电波的接收信号。 模拟接收信号放大器将表示经过模拟接收信号带通滤波器的放大接收信号的输出信号输出到解调器，并根据相同输出信号的电平来控制放大器的增益。 数字接收信号带通滤波器选择性地传递对应于数字音频广播无线电波的接收信号。 数字接收信号放大器根据相同输出信号的电平对经过数字接收信号带通滤波器的接收信号进行放大，并将放大的信号输出到解调器。

公开(公告)号：US20070049223A1

公开(公告)日：2007-03-01

申请号：US11466659

申请日：2006-08-23

Applicant: Hideshi Nishizawa ,  Osamu Mino

Inventor： Hideshi Nishizawa ,  Osamu Mino

IPC: H04B1/18

CPC classification number: H04H20/30 ,  H04H2201/183

Abstract: The present invention is directed to the provision of a radio receiver and of a radio receiving method that can reliably detect IBOC hybrid broadcast carrier waves. The radio receiver includes a tuning section for tuning to the frequency of a broadcast carrier wave, a detection section for detecting the signal level of the broadcast carrier wave at the frequency to which the tuning section has tuned, and a control section for detecting an IBOC hybrid broadcast carrier wave, based on a first signal level detected by the detection section by causing the tuning section to tune to a first frequency, a second signal level detected by the detection section by causing the tuning section to tune to a second frequency, and a third signal level detected by the detection section by causing the tuning section to tune to a third frequency. The radio receiving method is implemented in such a radio receiver.

Abstract translation: 本发明旨在提供一种能够可靠地检测IBOC混合广播载波的无线电接收机和无线电接收方法。 无线电接收机包括用于调谐到广播载波的频率的调谐部分，用于检测调谐部分调谐的频率下的广播载波的信号电平的检测部分和用于检测IBOC的控制部分 基于由检测部分检测到的第一信号电平，通过使调谐部分调谐到第一频率，由检测部分检测到的第二信号电平，使得调谐部分调谐到第二频率;以及 由所述检测部分通过使所述调谐部分调谐到第三频率的第三信号电平。 无线电接收方法在这种无线电接收机中实现。

公开(公告)号：US20060229750A1

公开(公告)日：2006-10-12

申请号：US11103741

申请日：2005-04-12

Applicant: Charles Rozier

Inventor： Charles Rozier

IPC: G06F17/00

CPC classification number: H04H20/28 ,  H04H20/22 ,  H04H2201/183

Abstract: A system and method for providing access to supplemental program services is provided. Generally, the system contains an antenna, a display, a control device, a memory, and a processor configured by the memory. The processor is configured by the memory to perform the steps of: sequentially arranging the audio programs received by the system in accordance with a representation of a carrier frequency, where the audio programs comprise at least one main program service and at least one supplemental program service, the main program service being located within the sequential arrangement at a location of a first carrier frequency at which the main program service was received, and the at least one supplemental program service received at the first carrier frequency being sequentially listed near the main program service; and displaying the sequentially arranged programs on the display so that the programs may be searched by use of the control device.

Abstract translation: 提供了一种用于提供对补充程序服务的访问的系统和方法。 通常，系统包含由存储器配置的天线，显示器，控制设备，存储器和处理器。 处理器由存储器配置以执行以下步骤：根据载波频率的表示顺序排列由系统接收的音频节目，其中音频节目包括至少一个主节目服务和至少一个补充节目服务 所述主节目服务位于所述主节目业务被接收的第一载波频率的位置处的所述顺序排列内，并且所述至少一个以所述第一载波频率接收的补充节目服务依次列在所述主节目服务附近 ; 以及在所述显示器上显示顺序排列的节目，使得可以通过使用所述控制装置来搜索所述节目。

公开(公告)号：US20060227814A1

公开(公告)日：2006-10-12

申请号：US11101795

申请日：2005-04-08

Applicant: Russell Iannuzzelli ,  Brian Kroeger ,  Harvey Chalmers

Inventor： Russell Iannuzzelli ,  Brian Kroeger ,  Harvey Chalmers

IPC: H04J3/06

CPC classification number: H04H20/30 ,  H04H20/12 ,  H04H2201/183 ,  H04H2201/186

Abstract: This invention provides a method of detecting time alignment of an analog audio signal and a digital audio signal in a hybrid radio system. The method comprises the steps of filtering the analog audio signal to produce a filtered analog audio signal, filtering the digital audio signal to produce a filtered digital audio signal, and using the filtered analog audio signal and the filtered digital audio signal to calculate a plurality of correlation coefficients, wherein the correlation coefficients are representative of time alignment between the analog audio signal and the digital audio signal. An apparatus for performing the method is also provided.

Abstract translation: 本发明提供了一种在混合无线电系统中检测模拟音频信号和数字音频信号的时间对准的方法。 该方法包括以下步骤：对模拟音频信号进行滤波以产生经滤波的模拟音频信号，对数字音频信号进行滤波以产生经滤波的数字音频信号，并使用滤波后的模拟音频信号和滤波后的数字音频信号来计算多个 相关系数，其中相关系数表示模拟音频信号和数字音频信号之间的时间对准。 还提供了一种用于执行该方法的装置。