公开(公告)号：US07305043B2

公开(公告)日：2007-12-04

申请号：US10465443

申请日：2003-06-19

Applicant: Marek Milbar ,  James C. Stekas

Inventor： Marek Milbar ,  James C. Stekas

IPC: H04L27/00

CPC classification number: H04L25/03866 ,  H04H20/30 ,  H04H20/95 ,  H04H2201/183 ,  H04H2201/20 ,  H04L27/2601

Abstract: A method for digital audio broadcasting comprising the steps of receiving a plurality of data bits to be transmitted, formatting the plurality of data bits into a plurality of protocol data units, inserting header bits at spaced locations within the protocol data units, and using the protocol data units to modulate a plurality of carriers to produce an output signal. The individual header bits can be positioned at evenly spaced locations in the protocol data units. A first one of the header bits can be offset from an end of the protocol data unit. A method of receiving the digital audio broadcasting signal the transmitters and receivers that operate in accordance with the methods are also provided.

Abstract translation: 一种用于数字音频广播的方法，包括以下步骤：接收要发送的多个数据位，将所述多个数据位格式化成多个协议数据单元，在所述协议数据单元内的间隔位置插入报头位，以及使用所述协议 数据单元来调制多个载波以产生输出信号。 各个标题位可以位于协议数据单元中均匀间隔的位置。 标题位中的第一个可以从协议数据单元的末尾偏移。 还提供了一种接收数字音频广播信号的方法，所述信号是根据所述方法操作的发射机和接收机。

公开(公告)号：US07221917B2

公开(公告)日：2007-05-22

申请号：US10136136

申请日：2002-05-01

Applicant: Brian William Kroeger

Inventor： Brian William Kroeger

IPC: H04B1/16

CPC classification number: H04H60/11 ,  H04H20/30 ,  H04H2201/183 ,  H04H2201/20

Abstract: A method of receiving an FM digital audio broadcasting signal including a first plurality of subcarriers in an upper sideband of a radio channel and a second plurality of subcarriers in a lower sideband of the radio channel comprises the steps of mixing the digital audio broadcasting signal with a local oscillator signal to produce an intermediate frequency signal, passing the intermediate frequency signal through a bandpass filter to produce a filtered signal, determining if one of the upper and lower sidebands of the digital audio broadcasting signal is corrupted, and adjusting the local frequency oscillator signal to change the frequency of the intermediate frequency signal such that the bandpass filter removes the subcarriers in the upper or lower sideband that has been corrupted. A receiver that processes a digital audio broadcasting signal in accordance with the method is also provided.

Abstract translation: 一种接收FM数字音频广播信号的方法，该FM数字音频广播信号包括无线电信道的上边带中的第一多个子载波和无线电信道的下边带中的第二多个副载波，包括以下步骤：将数字音频广播信号与 本地振荡器信号以产生中频信号，使中频信号通过带通滤波器以产生滤波信号，确定数字音频广播信号的上边带和下边带之一是否损坏，以及调整本地频率振荡器信号 以改变中频信号的频率，使得带通滤波器去除已损坏的上边带或下边带中的子载波。 还提供了根据该方法处理数字音频广播信号的接收机。

公开(公告)号：US07221688B2

公开(公告)日：2007-05-22

申请号：US10210143

申请日：2002-07-31

Applicant: Philip H. Vanness

Inventor： Philip H. Vanness

IPC: H04J3/00

CPC classification number: H04L1/0036 ,  H04H20/30 ,  H04H2201/183 ,  H04H2201/20 ,  H04L5/0005 ,  H04L27/2647

Abstract: A method for processing a composite digital audio broadcasting signal including an analog modulated portion in a central frequency band and digitally modulated portions in upper and lower sidebands with respect to the central frequency band, the method comprises the steps of wideband filtering the composite digital audio broadcasting signal to produce a first intermediate frequency signal, narrowband filtering the composite digital audio broadcasting signal to produce a second intermediate frequency signal, simultaneously processing the first intermediate frequency signal to retrieve a digitally modulated version of program material from the first intermediate frequency signal, and processing the second intermediate frequency signal to retrieve an analog modulated version of the program material from the second intermediate frequency signal, making a determination of the quality of the digitally modulated version of the program material, and using the quality determination to select the analog modulated version of the program material, the digitally modulated version of the program material, or a combination of the analog modulated version of the program material and the digitally modulated version of the program material as an output signal. Receivers that process a digital audio broadcasting signal using the method are also disclosed.

Abstract translation: 一种用于处理包括中央频带中的模拟调制部分和相对于中心频带的上边带和下边带中的数字调制部分的复合数字音频广播信号的方法，所述方法包括以下步骤：对复合数字音频广播进行宽带滤波 信号以产生第一中频信号，窄带滤波复合数字音频广播信号以产生第二中频信号，同时处理第一中频信号以从第一中频信号中检索节目素材的数字调制版本，以及处理 所述第二中频信号从所述第二中频信号中检索所述节目素材的模拟调制版本，确定所述节目素材的数字调制版本的质量，并使用所述质量确定来选择所述节目素材 程序材料的模拟调制版本，程序材料的数字调制版本，或程序材料的模拟调制版本和程序材料的数字调制版本的组合作为输出信号。 还公开了使用该方法处理数字音频广播信号的接收机。

公开(公告)号：US20060126716A1

公开(公告)日：2006-06-15

申请号：US11012579

申请日：2004-12-15

Applicant: Wendi Williams ,  Paul Marko ,  Craig Wadin

Inventor： Wendi Williams ,  Paul Marko ,  Craig Wadin

IPC: H04B1/66 ,  H04B14/04

CPC classification number: H04H20/62 ,  H04H20/02 ,  H04H40/90 ,  H04H2201/183

Abstract: A method (30) of digital remodulation of a received or source signal using a digital audio radio (116) having a first digital radio frequency path (119 to 116) or using a first digital radio frequency comprises the steps of re-encoding (38) the received signal to provide a re-encoded digital signal, reformatting (40) the re-encoded digital signal into a new digital format signal, and digitally modulating (42) a radio frequency carrier with the new digital format signal. The method further comprises the step of selectively switching (42) a radio frequency path of the digital audio radio from the first digital radio frequency path to a second radio frequency path (114 to 116) or from the first digital radio frequency to a second digital radio frequency having the radio frequency carrier with the new digital format signal.

Abstract translation: 使用具有第一数字射频路径（119至116）或使用第一数字射频的数字音频无线电（116）对接收或源信号进行数字重新调制的方法（30）包括重新编码（38 ）接收信号以提供重新编码的数字信号，将重新编码的数字信号重新格式化（40）为新的数字格式信号，并用新的数字格式信号数字地调制（42）射频载波。 该方法还包括以下步骤：选择性地将数字音频无线电的射频路径从第一数字射频路径切换到第二射频路径（114至116）或从第一数字射频切换到第二数字射频 具有具有新数字格式信号的射频载波的射频。

公开(公告)号：US20050272385A1

公开(公告)日：2005-12-08

申请号：US11106532

申请日：2005-04-15

Applicant: Soichi Nagano ,  Hiroyuki Nagahama

Inventor： Soichi Nagano ,  Hiroyuki Nagahama

IPC: H04B1/26 ,  H04B1/12 ,  H04B1/16 ,  H04B7/00

CPC classification number: H04B1/123 ,  H04B1/1638 ,  H04H20/30 ,  H04H40/18 ,  H04H2201/183 ,  H04L1/004

Abstract: A receiver accepts a digital signal having an upper side digital signal located in a higher frequency range on a frequency axis than an analog signal, and a lower side digital signal located in a lower frequency range on the frequency axis than the analog signal. A BPF (15) allows the analog signal to pass therethrough and a BPF (16) allows the analog signal and the digital signal to pass therethrough. BPFs (18) and (19) accept the output of the BPF (16) and output the upper side digital signal and the lower side digital signal, respectively. A digital receive level determining unit (20) and a selection SW (17) select either of the outputs of the BPFs (15) and (16) according to the receive levels of the upper side digital signal and the lower side digital signal, and output the selected output as a selected signal. The receiver then demodulates this selected signal.

Abstract translation: 接收器接收数字信号，该数字信号具有位于频率轴上比模拟信号更高的频率范围的上侧数字信号，以及位于比模拟信号频率低的频率范围内的较低频率范围的数字信号。 BPF（15）允许模拟信号通过，BPF（16）允许模拟信号和数字信号通过。 BPF（18）和（19）分别接受BPF（16）的输出并输出上侧数字信号和下侧数字信号。 数字接收电平确定单元（20）和选择SW（17）根据上侧数字信号和下侧数字信号的接收电平选择BPF（15）和（16）的输出之一，以及 输出选定的输出作为选择的信号。 接收机然后解调该选择的信号。

公开(公告)号：US06925489B1

公开(公告)日：2005-08-02

申请号：US09444818

申请日：1999-11-22

Applicant: Steven DeArmond Curtin

Inventor： Steven DeArmond Curtin

IPC: G06Q30/00 ,  G06Q50/00 ,  G10K15/02 ,  G10L19/00 ,  H04H60/63 ,  G06F15/16

CPC classification number: H04H60/63 ,  H04H2201/183 ,  H04H2201/20

Abstract: Identification information is extracted from a current broadcast of a piece or music or other type of information of interest to a user, and stored in a memory or other storage device, in response to a user command. The identification information includes sufficient information to identify at least one deliverable information item associated with the current broadcast, e.g., a CD or MP3 file which contains the particular piece of music. When the user later has access to a wired or wireless network connection, the extracted identification information is delivered over a network connection to a server which processes the delivered information to identify the deliverable information item associated with the broadcast. The user can then purchase the deliverable information item by appropriate interaction with the server. The extracted identification information may be stored in a removable memory device associated with a receiver which receives the broadcast. In this case, the removable memory device is subsequently removed from the receiver and inserted into another device which establishes the network connection for delivery of the identification information to the server.

Abstract translation: 识别信息是从当前广播的一段或音乐或其他类型的感兴趣的信息提取给用户，并且响应于用户命令而存储在存储器或其他存储设备中。 识别信息包括用于识别与当前广播相关联的至少一个可交付信息项的足够信息，例如包含特定音乐片段的CD或MP3文件。 当用户稍后可以访问有线或无线网络连接时，所提取的标识信息通过网络连接传送到处理所传递的信息的服务器，以识别与广播相关联的可传递信息项。 然后，用户可以通过与服务器的适当交互来购买可交付信息项。 所提取的识别信息可以存储在与接收广播的接收机相关联的可移动存储设备中。 在这种情况下，可移动存储设备随后从接收器中移除并插入到建立用于将识别信息传送到服务器的网络连接的另一设备中。

公开(公告)号：US20050113049A1

公开(公告)日：2005-05-26

申请号：US10992903

申请日：2004-11-19

Applicant: Kazuo Takayama ,  Shuji Sugahara

Inventor： Kazuo Takayama ,  Shuji Sugahara

IPC: H04B1/16 ,  H04H20/00 ,  H04H20/28 ,  H04H20/72 ,  H04H40/27 ,  H04B1/18

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：US20040064208A1

公开(公告)日：2004-04-01

申请号：US10259073

申请日：2002-09-27

Inventor： Deepen Sinha ,  James Tracey

IPC: H04H005/00 ,  G06F017/00

CPC classification number: H04H60/27 ,  H04H20/30 ,  H04H2201/183 ,  H04H2201/186 ,  H04H2201/20

Abstract: A dual-mode receiver that functions both as a digital audio broadcast receiver and a solid-state digital audio content player is described. In a nullradionull mode, the receiver is able to: receive a digital audio bitstream, decode the received bitstream, store or render the decoded bitstream either based on an input from a user or a pre-programmed instruction from a user. In a nullplaynull mode, the receiver is able to access the stored digital audio content, or extract stored digital audio content from a compact media device (e.g., compact flash memory) that is interfaced with the receiver.

Abstract translation: 描述了同时用作数字音频广播接收机和固态数字音频内容播放器的双模式接收机。 在“无线电”模式中，接收机能够：接收数字音频比特流，解码接收到的比特流，基于来自用户的输入或来自用户的预编程指令来存储或呈现解码的比特流。 在“播放”模式中，接收机能够访问存储的数字音频内容，或从与接收器接口的小型媒体设备（例如，紧凑型闪存）中提取存储的数字音频内容。

公开(公告)号：US20040063399A1

公开(公告)日：2004-04-01

申请号：US10672441

申请日：2003-09-26

Inventor： Marek Milbar

IPC: H04H001/00

CPC classification number: H03M13/2789 ,  H03M13/271 ,  H03M13/2732 ,  H03M13/276 ,  H04H2201/183 ,  H04H2201/186

Abstract: This invention provides a method for interleaving bits of a digital signal representative of data and/or audio in a digital audio broadcasting system, the method comprising the step of: writing a plurality of bits of the digital signal to a matrix; and reading the bits from the matrix, wherein at least one of the writing and reading steps follows a non-sequential addressing scheme. Apparatus for transmitting the interleaved bits, and apparatus for receiving and deinterleaving the bits are also provided.

Abstract translation: 本发明提供了一种用于在数字音频广播系统中交织表示数据和/或音频的数字信号的比特的方法，该方法包括以下步骤：将数字信号的多个比特写入矩阵; 以及从所述矩阵读取所述位，其中所述写入和读取步骤中的至少一个遵循非顺序寻址方案。 还提供了用于发送交错比特的装置，以及用于接收和解交织比特的装置。

公开(公告)号：US06510175B1

公开(公告)日：2003-01-21

申请号：US09169738

申请日：1998-10-08

Applicant: Billie J. Hunsinger ,  Armando J. Vigil ,  Leland P. Solie

Inventor： Billie J. Hunsinger ,  Armando J. Vigil ,  Leland P. Solie

IPC: H04L2500

CPC classification number: H04L5/023 ,  H04H20/30 ,  H04H60/11 ,  H04H2201/183 ,  H04H2201/20

Abstract: A system for combining AM and FM transmissions. In-band, on-channel, FM Digital Audio Broadcast (IBOC FM-DAB) allows simultaneous transmission of DAB and FM over existing FM allocations without interfering with conventional analog FM signals. The utility of existing FM spectrum allocations is therefore enhanced.

Abstract translation: 用于组合AM和FM传输的系统。 带内，频道内的FM数字音频广播（IBOC FM-DAB）允许在现有的FM分配上同时传输DAB和FM，而不会干扰传统的模拟FM信号。 因此，现有FM频谱分配的效用得到提高。