公开(公告)号：EP1772980A1

公开(公告)日：2007-04-11

申请号：EP05021797.5

申请日：2005-10-06

Applicant: Delphi Technologies, Inc.

Inventor： Bienefeld, Alex

IPC: H04H1/00

CPC classification number: H04H20/30 ,  H04H20/72 ,  H04H2201/12 ,  H04H2201/183 ,  H04H2201/20

Abstract: Die vorliegende Erfindung offenbart ein Verfahren zur Übertragung von Rundfunksignalen, bei dem ein DRM-Signal und ein zum Transport des DRM-Signals genutztes FM-Multiplex-Signal erzeugt wird. Die Erfindung betrifft ferner eine entsprechende Sendevorrichtung und eine entsprechende Empfangsvorrichtung.

Abstract translation: 用于发送广播信号的发射机（10）具有用于产生具有76kHz的中间/中心频率的数字无线电台（DRM）信号的设备（1）。 DRM信号被馈送到加法装置（3）上的第一输入端，其第二输入端附加在用于产生FM多路复用信号的装置（2）中的频率调制（FM）多路复用信号。 独立权利要求还包括以下内容：（1）用于发送广播信号的发送装置，特别是用于实现本发明的方法; （2）用于发送广播信号的接收装置，特别是用于实现本发明的方法。

公开(公告)号：EP1059748A3

公开(公告)日：2005-09-21

申请号：EP00304065.6

申请日：2000-05-15

Applicant: LUCENT TECHNOLOGIES INC.

Inventor： Laneman, Jerry Nicholas ,  Sundberg, Carl-Erik Wilhelm

IPC: H04H1/00 ,  H04L1/20

CPC classification number: H04L1/0045 ,  H04H20/30 ,  H04H60/11 ,  H04H2201/183 ,  H04H2201/186 ,  H04H2201/20 ,  H04L1/0059 ,  H04L1/0068 ,  H04L1/0071 ,  H04L27/2647

Abstract: Techniques for processing received information in a communication system, such that performance is significantly improved in the presence of certain types of interference. In an illustrative embodiment, first and second digital sidebands are transmitted on either side of an FM or AM host carrier signal in a hybrid in-band on-channel (HIBOC) digital audio broadcasting (DAB) system. The compressed digital audio information in the sidebands is encoded using an outer code, e.g., a cyclic redundancy code (CRC), and an inner code, e.g., a complementary punctured pair convolutional (CPPC) code. A receiver generates an error indicator based at least in part on a first decoding of the received information. The error indicator characterizes interference associated with at least one of the digital sidebands. The receiver then generates at least one alternative decoding of the received information if the error indicator has a designated characteristic. For example, the receiver may generate the alternative decoding by eliminating from consideration in the receiver decoding process a designated portion of at least one of the digital sidebands. The error indicator may be indicative of the presence or absence of a first adjacent interference signal of a particular level within a frequency band associated with one of the sidebands, and may be based on, e.g., a signal-to-noise ratio measurement generated from a pilot tone associated with a given sideband, and/or an error flag generated using the CRC outer code Portions of the given sideband may be eliminated from consideration via successive erasures of sideband components, i.e., subbands, thereby resulting in an increase in the effective code rate of the inner code.

公开(公告)号：EP1550224A1

公开(公告)日：2005-07-06

申请号：EP03754953.2

申请日：2003-09-26

Applicant: IBIQUITY DIGITAL CORPORATION

Inventor： MILBAR, Marek

IPC: H03M13/00

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 (Fig.22); 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.

公开(公告)号：EP1113605A2

公开(公告)日：2001-07-04

申请号：EP00310070.8

申请日：2000-11-13

Applicant: LUCENT TECHNOLOGIES INC.

Inventor： DeArmond Curtin, Steven

IPC: H04H1/00

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: 识别信息由一块或音乐或其它类型的感兴趣的信息的用户的当前广播中提取，并存储在存储器或其他存储设备中，响应于用户命令。 该识别信息包括足够的信息来识别与当前广播，E. G.，CD或MP3文件，其中包含的特定音乐片段相关联的至少一个传递的信息项。 当用户以后可以访问的有线或无线网络连接，将所提取的标识信息是通过网络连接到处理所传递的信息来识别与广播相关联的传递的信息项服务器提供。 然后，用户可以通过与服务器的适当交互购买传递的信息项。 所提取的识别信息可以被存储在与接收器，其接收广播相关联的可移动存储装置。 在这种情况下，可移动存储装置随后从接收器移除并插入到另一设备它建立用于递送的识别信息发送到服务器的网络连接。

公开(公告)号：EP1016230A4

公开(公告)日：2000-07-05

申请号：EP97928918

申请日：1997-06-12

Applicant: KUMAR DEREK D

Inventor： KUMAR DEREK D

IPC: H04H20/33 ,  H04L1/00 ,  H04H1/00 ,  H04B7/12 ,  H04L1/02 ,  H04L27/26

CPC classification number: H04H20/22 ,  H04H20/33 ,  H04H2201/183 ,  H04H2201/20 ,  H04L1/0066 ,  H04L1/0069 ,  H04L1/007 ,  H04L5/0005

Abstract: A method and system are provided for the transmission and reception of an In-band On-channel (IBOC) FM-band digital audio broadcast (DAB) signal. The IBOC DAB signal (63) is generated in the transmitter (47, 49) to occupy the upper and lower sideband frequency regions (11, 13) in the RF emission mask for the conventional broadcast analog FM-band. Redundant source bit information is transmitted in upper and lower sidebands so that the loss of information in either one but not both sidebands due to large amount of interference or distortion does not deleteriously affect the IBOC DAB receiver performance. The system exhibits frequency-diversity and time-diversity. The receiver (231, 233) determines which codeword bit estimate of upper or lower sideband signal is less erroneous. The receiver system selects between decoded estimates for each pair of demodulated ECC codewords or combines both ECC codeword estimates prior to decoding in certain embodiments.

公开(公告)号：EP0856211A2

公开(公告)日：1998-08-05

申请号：EP97926188.0

申请日：1997-07-01

Applicant: Cellularvision Technology & Telecommunications, L. P. ,  PHILIPS NORDEN AB

Inventor： BOSSARD, Bernard ,  BRAND, Charles

IPC: H04N7 ,  H04H20 ,  H04L27 ,  H04Q7

CPC classification number: H04H20/30 ,  H04H2201/183

Abstract: A combination of broadband program materials, such as TV, plus digital communications services of all types, are broadcast to a cell in the same frequency band, such as 27.5 to 28.5 GHz. The combination of all the transmitted channels have a combined bandwidth substantially exceeding the frequency band. At least some of the channels are transmitted with two diversity characteristics different from those of other channels. In one embodiment analog signals transmit the broadband services, preferably using wide deviation FM modulation, the FM channels filling the band. By choosing carrier frequencies selectively, between 5 and 9 T-1 digital channels can be broadcast in each FM channel when polarization is the same. Differing polarization of digital and FM signals in the same band can enable selection and detection of the desired one of a full spectrum of digital signals, or any one of the analog signals.

公开(公告)号：US20190123841A1

公开(公告)日：2019-04-25

申请号：US15790785

申请日：2017-10-23

Applicant: Wheatstone Corporation

Inventor： Jeffrey Allan Keith

IPC: H04H20/18 ,  H04H20/72 ,  H04H20/48

CPC classification number: H04H20/18 ,  H04H20/48 ,  H04H20/72 ,  H04H2201/183

Abstract: An audio processor includes a detector configured to determine a correlation of first and second data corresponding to an analog FM component and an HD FM component, respectively, of a broadcast RF signal. A signal processor is configured to receive an input audio signal, to generate an analog FM audio signal and an HD FM audio signal therefrom and to control a relative timing of the analog FM audio signal and the HD FM audio signal based on the determined correlation. The signal processor may include a multiband limiter configured to generate a multiband limited audio signal responsive to the input audio signal, an HD FM audio processor configured to generate the HD FM audio signal responsive to the multiband limited audio signal, and an analog FM audio processor configured to generate the analog FM audio signal responsive to the multiband limited audio signal and to delay the analog FM audio signal responsive to the timing control signal.

公开(公告)号：US20170169832A1

公开(公告)日：2017-06-15

申请号：US14966716

申请日：2015-12-11

Applicant: iBiquity Digital Corporation

Inventor： Gabriel Olochwoszcz ,  Ashwini Pahuja

IPC: G10L19/16 ,  G10L19/24 ,  H04B1/16 ,  G10L19/008

CPC classification number: G10L19/167 ,  G10L19/008 ,  G10L19/24 ,  H04B1/16 ,  H04H20/30 ,  H04H60/12 ,  H04H2201/183

Abstract: A method of processing a digital radio broadcast signal includes: (a) determining a plurality of current correlation sample values representative of a time delay between samples in an analog audio sample stream and samples in a digital audio sample stream; (b) determining a current inversion status; (c) updating a delay history and an inversion status history; (d) checking the current correlation sample values for consistency with a first confidence threshold; (e) if consistency is found in step (d), determining if each of a first plurality of values in the delay history is consistent within a predetermined range of the current correlation sample values; (f) if consistency is found in step (e), determining if a value in the inversion status history is consistent with the current inversion status; and (g) if the consistency is found in step (f), allowing blending of an output to the digital audio sample stream.

公开(公告)号：US09178548B1

公开(公告)日：2015-11-03

申请号：US14257286

申请日：2014-04-21

Applicant: iBiquity Digital Corporation

Inventor： Brian W. Kroeger ,  Paul J. Peyla

IPC: H04B1/10

CPC classification number: H04B1/1036 ,  H04B1/109 ,  H04B2001/1045 ,  H04B2001/1063 ,  H04H20/31 ,  H04H2201/183

Abstract: A method for processing a radio signal includes: receiving an FM in-band on-channel radio signal including a plurality of digitally modulated subcarriers in upper and lower sidebands; sampling the FM in-band on-channel radio signal to produce an input signal including complex digital samples of a combination of a desired one the upper and lower sidebands and an FM interferer; removing FM interferer components from the first signal by notch filtering to produce a notch-filtered signal; weighting the notch-filtered signal to produce a weighted notch-filtered signal; using a parametric filter to filter the input signal to produce a parametric-filtered input signal; and combining the weighted notch-filtered signal and the parametric-filtered input signal to produce an output signal. A radio receiver that implements the method is also included.

Abstract translation: 一种处理无线电信号的方法包括：在上边带和下边带中接收包括多个数字调制子载波的FM带内通道无线电信号; 对FM带内通道无线电信号进行采样以产生包括上边带和下边带期望的一个组合的复数数字采样和FM干扰源的输入信号; 通过陷波滤波从第一信号中去除FM干扰源分量以产生陷波滤波信号; 加权陷波滤波信号以产生加权陷波滤波信号; 使用参数滤波器对输入信号进行滤波以产生参数滤波的输入信号; 以及组合加权陷波滤波信号和参数滤波输入信号以产生输出信号。 还包括实现该方法的无线电接收机。

公开(公告)号：US08121566B2

公开(公告)日：2012-02-21

申请号：US12310614

申请日：2007-08-30

Applicant: Masanori Ishida ,  Kazuo Koyama ,  Kazuyoshi Inako ,  Naoki Nakajima

Inventor： Masanori Ishida ,  Kazuo Koyama ,  Kazuyoshi Inako ,  Naoki Nakajima

IPC: H04B1/18

CPC classification number: H04H40/18 ,  H04H20/30 ,  H04H60/43 ,  H04H2201/183

Abstract: A broadcasting receiver suitable for receiving broadcasting signal transmitted with signal format is provided in which carrier wave is allocated in a frequency channel with certain frequency offset and signal intensity, which comprises: an information acquiring means for acquiring information related to the frequency channel in seek; and a station existence determining means for determining whether the frequency channel is station-existent or not based on information acquired by the information acquiring means; and wherein, the information acquiring means acquires information for receiving intensity of carrier wave and information for frequency offset.

Abstract translation: 提供一种适用于接收以信号格式发送的广播信号的广播接收机，其中载波在具有特定频率偏移和信号强度的频道中分配，其包括：信息获取装置，用于获取与寻道中的频道相关的信息; 以及站存在确定装置，用于基于由所述信息获取装置获取的信息来确定所述频道是否存在; 并且其中，所述信息获取装置获取用于接收载波强度的信息和用于频率偏移的信息。