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公开(公告)号：US06861946B2
公开(公告)日：2005-03-01
申请号：US10132636
申请日：2002-04-25
CPC分类号： G08B13/1436 , G06F1/1626 , G06F1/1694 , G06F3/0346 , G06F3/0383 , G06F21/32 , G06F2200/1636 , G06F2200/1637 , H04M1/72522 , H04M1/72547 , H04M2250/12
摘要： A motion-based input system including a motion sensor coupled to a device. The motion sensor provides a motion signal corresponding to the movement of the device. The system further includes a processor responsive to the motion signal and configured to distinguish between a tap command and a position command and provides, in response to a tap command, one or more actions, and in response to a position command, one or more different actions to control and operate the device.
摘要翻译： 一种基于运动的输入系统，包括耦合到装置的运动传感器。 运动传感器提供与装置的运动相对应的运动信号。 该系统还包括响应于运动信号并且被配置为区分抽头命令和位置命令的处理器，并且响应于抽头命令提供一个或多个动作，并且响应于位置命令，提供一个或多个不同的 控制和操作设备的动作。
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2.发明授权Error screening based on code and control information consistency in a communication system 有权基于通信系统中代码和控制信息一致性的错误筛选公开(公告)号：US06662339B1
公开(公告)日：2003-12-09
申请号：US09464042
申请日：1999-12-15
IPC分类号： G06F1100
摘要： Improved error screening techniques are used in processing digital audio or other types of information received in a digital communication system. Control information associated with a given packet of the received information is identified and compared with a decoding requirement of the packet, in order to control the generation of an error indicator for the packet. More particularly, the error indicator may be generated in response to an inconsistency between the control information and the decoding requirement. For example, the control information may include an indication of packet length that can be compared to a number of bits required to decode the corresponding packet, with any inconsistency between the packet length indication and the number of required bits leading to the generation of an error flag for the packet. The invention is particularly well-suited for use in the processing of encoded digital audio information received in a hybrid in-band on-channel (HIBOC) digital audio broadcasting (DAB) system, but is also applicable to other types of information and other types of communication systems.
摘要翻译： 改进的错误筛选技术用于处理在数字通信系统中接收的数字音频或其他类型的信息。 与所接收信息的给定分组相关联的控制信息被识别并与分组的解码要求进行比较，以便控制分组的错误指示符的生成。 更具体地，可以响应于控制信息和解码要求之间的不一致而产生错误指示符。 例如，控制信息可以包括可以与解码对应分组所需的位数比较的分组长度的指示，分组长度指示与导致产生错误的所需比特数之间的任何不一致 标志为数据包。 本发明特别适用于处理在混合带内通道（HIBOC）数字音频广播（DAB）系统中接收的编码数字音频信息，但也适用于其他类型的信息和其他类型 的通信系统。
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公开(公告)号：US06874115B1
公开(公告)日：2005-03-29
申请号：US09632423
申请日：2000-08-04
IPC分类号： H03M13/00
CPC分类号： H03M13/6511 , H03M13/00
摘要： Techniques are disclosed for processing received information in a communication system, such that performance is significantly improved in the presence of certain types of interference, e.g., partial-band interference. In an illustrative embodiment, first and second digital sidebands are transmitted on either side of an AM or FM 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 error correcting code such as a Reed-Solomon (RS) code. A receiver attempts to detect interference within a designated portion of a given one of the sidebands. If the interference is detected, the receiver eliminates the portion of the frequency band from consideration in the decoding process by using a fixed-erasure decoding (FED) technique to decode the error correcting code. If the interference is not detected, the receiver utilizes the designated portion of the sideband in the decoding process by using a hard-decision decoding (HDD) technique. Advantageously, this multi-mode approach of the present invention provides significantly reduced complexity relative to conventional maximum likelihood decoding, and also provides a block error flag for use in error concealment in an audio decoder. In addition, the invention provides improved performance relative to conventional systems in terms of reducing the probability that a block error flag will be generated, while also providing a manageable probability of undetected errors.
摘要翻译： 公开了用于在通信系统中处理接收到的信息的技术，使得在某些类型的干扰（例如，部分频带干扰）的存在下，性能被显着改善。 在说明性实施例中，第一和第二数字边带在混合带内通道（HIBOC）数字音频广播（DAB）系统中的AM或FM主载波信号的任一侧上发送。 使用诸如里德 - 所罗门（RS）码的纠错码对边带中的压缩数字音频信息进行编码。 接收机尝试检测给定一个边带的指定部分内的干扰。 如果检测到干扰，则接收器通过使用固定消息解码（FED）技术来解码纠错码来消除解码过程中考虑的频带部分。 如果没有检测到干扰，则通过使用硬判决解码（HDD）技术，接收机在解码过程中利用边带的指定部分。 有利地，本发明的这种多模式方法相对于传统的最大似然解码提供显着降低的复杂度，并且还提供用于音频解码器中的错误隐藏的块错误标志。 此外，本发明提供了相对于常规系统的改进的性能，以减少将产生块错误标志的可能性，同时还提供未被发现的错误的可管理概率。
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4.发明授权公开(公告)号：US06430724B1
公开(公告)日：2002-08-06
申请号：US09322848
申请日：1999-05-28
IPC分类号： H03M1300
CPC分类号： H04L1/0045 , H04H20/30 , H04H60/11 , H04H2201/183 , H04H2201/186 , H04H2201/20 , H04L1/0059 , H04L1/0068 , H04L1/0071 , H04L27/2647
摘要： 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.
摘要翻译： 用于在通信系统中处理接收到的信息的技术，使得在存在某些类型的干扰的情况下，性能得到显着提高。 在说明性实施例中，在混合带内通道（HIBOC）数字音频广播（DAB）系统中，在FM或AM主机载波信号的任一侧上发送第一和第二数字边带。 边带中的压缩数字音频信息使用外码（例如，循环冗余码（CRC））和内码（例如，互补打孔对卷积码（CPPC）码）进行编码。 接收器至少部分地基于所接收的信息的第一解码来生成错误指示符。 错误指示器表征与至少一个数字边带相关联的干扰。 如果错误指示符具有指定的特征，则接收器然后生成接收到的信息的至少一个替代解码。 例如，接收机可以通过在接收机解码处理中考虑至少一个数字边带的指定部分来产生替代解码。 误差指示符可以指示在与一个边带相关联的频带内的特定电平的第一相邻干扰信号的存在或不存在，并且可以基于例如从...产生的信噪比测量 与给定边带相关联的导频音和/或使用CRC外码生成的错误标志。 可以通过边带分量即子带的连续擦除来考虑给定边带的一部分，从而导致内码的有效码率的增加。
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5.发明授权Channel code configurations for digital audio broadcasting systems and other types of communication systems 有权数字音频广播系统和其他类型通信系统的频道码配置公开(公告)号：US06587826B1
公开(公告)日：2003-07-01
申请号：US09464043
申请日：1999-12-15
IPC分类号： G10L2104
CPC分类号： H04L1/0065 , H04L1/004 , H04L1/0071 , H04L1/0078
摘要： Improved channel code configurations for use in transmission of digital audio or other types of information in a digital communication system. The channel code may include an outer channel code, e.g., a cyclic redundancy code (CRC), and an inner channel code, e.g., a complementary punctured pair convolutional (CPPC) code. In accordance with the invention, multiple code words of the outer code are associated with a given packet of the digital information, in accordance with a particular outer code configuration, so as to provide partial error flagging for different portions of the given packet. An information encoder, e.g., a PAC encoder, interacts with an outer code encoder to determine a bit allocation for transmission of packets at a particular bit rate, based at least in part on the outer code configuration. The invention is particularly well-suited for use in the transmission of digital audio information in a hybrid in-band on-channel (HIBOC) digital audio broadcasting (DAB) system, but is also applicable to other types of communication systems.
摘要翻译： 用于在数字通信系统中传输数字音频或其他类型的信息的改进的信道码配置。 信道码可以包括外部信道码，例如循环冗余码（CRC）和内部信道码，例如互补的穿孔对卷积码（CPPC）码。 根据本发明，根据特定的外部代码配置，外部代码的多个代码字与数字信息的给定分组相关联，以便为给定分组的不同部分提供部分错误标记。 信息编码器，例如PAC编码器，与外码编码器交互，以至少部分地基于外码配置来确定用于以特定比特率传输分组的比特分配。 本发明特别适用于在混合带内通道（HIBOC）数字音频广播（DAB）系统中传输数字音频信息，但也适用于其他类型的通信系统。
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