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    • 21. 发明申请
    • Apparatus and method of controlling T-communication convergence service in wired-wireless convergence network
    • 有线 - 无线融合网络中T通信融合业务的控制方法
    • US20080107249A1
    • 2008-05-08
    • US11977662
    • 2007-10-25
    • Eung Ha KimKee Seong ChoByung Sun Lee
    • Eung Ha KimKee Seong ChoByung Sun Lee
    • H04M11/00
    • H04L12/66
    • The present invention provides a method and apparatus for controlling a T-communication convergence service in a wired-wireless convergence network, and more particularly, a method and apparatus for providing a function of controlling the T-communication convergence service, in which a communication service and a broadcasting service are converged, without depending on a wired or wireless terminal in a wired-wireless convergence network. According to the method, an IP multimedia subsystem (IMS) based call session control unit and a broadcasting control function are utilized to the utmost so that the T-communication convergence service is used regardless of types of networks and terminals that a user is connected to, and sessions related to performance of the T-communication convergence service and the states of the sessions can be controlled. Also, an environment for providing a policy, which can authenticate a user using the T-communication convergence service and process convergence service in the T-communication convergence service, can be constructed. In addition, by building a system for controlling the T-communication convergence service which can be easily applied to communication networks other than a certain communication network, reusability and portability of the system are increased.
    • 本发明提供了一种用于控制有线 - 无线会聚网络中的T通信收敛服务的方法和装置,更具体地,提供了一种用于提供控制T通信会聚服务的功能的方法和装置,其中通信服务 并且广播服务被融合,而不依赖于有线无线会聚网络中的有线或无线终端。 根据该方法,最大限度地利用基于IP多媒体子系统(IMS)的呼叫会话控制单元和广播控制功能,使得无论用户连接到的网络和终端的类型如何,都使用T通信会聚服务 并且可以控制与T通信收敛服务的性能和会话状态有关的会话。 此外,可以构建用于提供可以在T通信收敛服务中使用T通信收敛服务和处理收敛服务的用户认证的策略的环境。 此外,通过构建用于控制可以容易地应用于除了某个通信网络之外的通信网络的T通信收敛服务的系统,系统的可重用性和可移植性增加。
    • 26. 发明授权
    • Method and apparatus for encoding and decoding audio signal using layered sinusoidal pulse coding
    • 使用分层正弦脉冲编码对音频信号进行编码和解码的方法和装置
    • US08805680B2
    • 2014-08-12
    • US13321297
    • 2010-05-19
    • Mi-Suk LeeHeesik YangHyun-Woo KimJongmo SungHyun-Joo BaeByung-Sun Lee
    • Mi-Suk LeeHeesik YangHyun-Woo KimJongmo SungHyun-Joo BaeByung-Sun Lee
    • G10L19/02
    • G10L19/02G10L19/0212G10L19/24
    • Provided are a method and an apparatus for encoding and decoding an audio signal. A method for encoding an audio signal includes receiving a transformed audio signal, dividing the transformed audio signal into a plurality of subbands, performing a first sinusoidal pulse coding operation on the subbands, determining a performance region of a second sinusoidal pulse coding operation among the subbands on the basis of coding information of the first sinusoidal pulse coding operation, and performing the second sinusoidal pulse coding operation on the determined performance region, wherein the first sinusoidal pulse coding operation is performed variably according to the coding information. Accordingly, it is possible to further improve the quality of a synthesized signal by considering the sinusoidal pulse coding of a lower layer when encoding or decoding an audio signal in an upper layer by a layered sinusoidal pulse coding scheme.
    • 提供了一种用于对音频信号进行编码和解码的方法和装置。 一种对音频信号进行编码的方法包括接收经变换的音频信号,将变换的音频信号分成多个子带,对子带执行第一正弦脉冲编码操作,确定子带中的第二正弦脉冲编码操作的性能区域 基于第一正弦脉冲编码操作的编码信息,并对所确定的执行区域执行第二正弦脉冲编码操作,其中根据编码信息可变地执行第一正弦脉冲编码操作。 因此,通过考虑在通过分层正弦脉冲编码方案对上层中的音频信号进行编码或解码时下层的正弦脉冲编码,可以进一步提高合成信号的质量。
    • 27. 发明授权
    • Encoding and decoding apparatuses for improving sound quality of G.711 codec
    • 用于提高G.711编解码器音质的编码和解码装置
    • US08494843B2
    • 2013-07-23
    • US12640745
    • 2009-12-17
    • Jong Mo SungHyun Joo BaeByung Sun Lee
    • Jong Mo SungHyun Joo BaeByung Sun Lee
    • G10L19/14
    • G10L19/24G10L19/032
    • An encoding apparatus and a decoding apparatus for reducing the quantization error of a G.711 codec and improving sound quality are provided. The encoding apparatus includes a G.711 encoder which generates a G.711 bitstream by encoding an input audio signal; an enhancement-layer encoder which chooses one of a static bit allocation method and a dynamic bit allocation method that can produce less quantization error based on the input audio signal and the G.711 bitstream, and outputs an enhancement-layer bitstream including encoded additional mantissa information obtained by using the chosen bit allocation method; and a multiplexer which multiplexes the G.711 bitstream and the enhancement-layer bitstream. Therefore, it is possible to reduce the quantization error of a G.711 codec and improve sound quality.
    • 提供了一种用于降低G.711编解码器的量化误差并提高声音质量的编码装置和解码装置。 编码装置包括:G.711编码器,通过编码输入音频信号来产生G.711比特流; 增强层编码器,其选择可以基于输入音频信号和G.711比特流产生较少的量化误差的静态比特分配方法和动态比特分配方法中的一种,并且输出包括经编码的附加尾数的增强层比特流 通过使用选择的比特分配方法获得的信息; 以及复用器,用于复用G.711比特流和增强层比特流。 因此,可以降低G.711编解码器的量化误差,提高音质。