专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US5054075A Subband decoding method and apparatus 失效
标题翻译：子带解码方法及装置
公开(公告)号：US5054075A
公开(公告)日：1991-10-01
申请号：US403245
申请日：1989-09-05
申请人： Daehyoung Hong , Michael D. Kotzin
发明人： Daehyoung Hong , Michael D. Kotzin
IPC分类号： G10L21/02 , H04B1/66
CPC分类号： G10L19/028 , H04B1/667
摘要： An subband coding system encoder is provided for improving the quality of a reconstructed speech signal. Briefly, the improved subband coding system encoder includes means for improving the selection of the waveform/noise fill gain factor. The improved selection method, according to the invention, is based on the quasi-stationary characteristic of speech, that is, that the short-time frequency spectrum of a speech signal varies slowly with time. Moreover, the amount of fill energy is adaptively determined for each subband according to the shape of the frequency spectrum for each speech frame.
摘要翻译：提供了一种用于提高重构语音信号质量的子带编码系统编码器。简而言之，改进的子带编码系统编码器包括用于改善波形/噪声填充增益因子的选择的装置。根据本发明的改进的选择方法是基于语音的准静态特性，即语音信号的短时频谱随时间而变化。此外，根据每个语音帧的频谱的形状，针对每个子带自适应地确定填充能量。

2. 发明授权

US5127054A Speech quality improvement for voice coders and synthesizers 失效
标题翻译：语音编码器和合成器的语音质量改进
公开(公告)号：US5127054A
公开(公告)日：1992-06-30
申请号：US600271
申请日：1990-10-22
申请人： Daehyoung Hong , Michael D. Kotzin , Anthony P. van den Heuvel
发明人： Daehyoung Hong , Michael D. Kotzin , Anthony P. van den Heuvel
IPC分类号： G10L21/02 , H04B1/66
CPC分类号： G10L21/038 , H04B1/667
摘要： A harmonic signal is created from a limited spectral representation of a voice signal. The harmonic signal is combined with the at least a portion of the limited delayed spectral signal to provide a reconstructed speech signal having perceptually improved audio quality.
摘要翻译：谐波信号是从语音信号的有限频谱表示形成的。谐波信号与限制的延迟频谱信号的至少一部分组合以提供具有感知改善的音频质量的重构语音信号。

3. 发明授权

US4942570A Multiple control slot TDM/FDM communication system 失效
标题翻译：多控制时隙TDM / FDM通信系统
公开(公告)号：US4942570A
公开(公告)日：1990-07-17
申请号：US300392
申请日：1989-01-23
申请人： Michael D. Kotzin , Kenneth J. Crisler , Lawrence M. Mohl , Theodore Saltzberg , Daehyoung Hong , Anthony P. Van den Heuvel
发明人： Michael D. Kotzin , Kenneth J. Crisler , Lawrence M. Mohl , Theodore Saltzberg , Daehyoung Hong , Anthony P. Van den Heuvel
IPC分类号： H04J3/14 , H04J3/16 , H04J4/00 , H04Q7/38
CPC分类号： H04J3/1647 , H04J4/00
摘要： A communication system that provides TDM and FDM communications between communication units. At least two control slots are provided in each TDM frame window to provide communication control information such as channel assignment information.
摘要翻译：在通信单元之间提供TDM和FDM通信的通信系统。在每个TDM帧窗口中提供至少两个控制时隙，以提供诸如频道分配信息之类的通信控制信息。

4. 发明授权

US5430743A Method and apparatus for recovering data in a radio communication system 失效
标题翻译：用于在无线电通信系统中恢复数据的方法和装置
公开(公告)号：US5430743A
公开(公告)日：1995-07-04
申请号：US84052
申请日：1993-06-29
申请人： Lawrence J. Marturano , Daehyoung Hong
发明人： Lawrence J. Marturano , Daehyoung Hong
IPC分类号： H04L1/00 , G06F11/00 , H03M13/00
CPC分类号： H04L1/0036 , H04L1/0045 , H04L1/0057 , H04L1/0061
摘要： A radio communication system receiver employs a demodulator (104) to recover a received signal. The receiver of the present invention further includes a channel quality estimator (222) for estimating a characteristic of the communication channel over which the signal is received. A first or second decoding technique (220) is selectively employed using the estimated communication channel quality value (223). In this manner, an improved receiver is provided that is able to realize the benefits of either the first or the second decoding technique, depending the channel condition.
摘要翻译：无线电通信系统接收机采用解调器（104）来恢复接收到的信号。本发明的接收机还包括用于估计接收信号的通信信道的特性的信道质量估计器（222）。使用估计的通信信道质量值（223）选择性地采用第一或第二解码技术（220）。以这种方式，提供了一种改进的接收机，其能够根据信道条件实现第一或第二解码技术的优点。

5. 发明授权

US08275383B2 System for ranging based on partitioned radio resource 有权
标题翻译：基于分区无线资源的测距系统
公开(公告)号：US08275383B2
公开(公告)日：2012-09-25
申请号：US12264291
申请日：2008-11-04
申请人： Hee Jin Jang , Su Won Lee , Daehyoung Hong , Bongjhin Shin
发明人： Hee Jin Jang , Su Won Lee , Daehyoung Hong , Bongjhin Shin
IPC分类号： H04W72/04
CPC分类号： H04W72/04 , H04W4/08 , H04W72/042 , H04W84/12 , H04W88/08
摘要： A method for ranging in a wireless communication system and a communication apparatus and/or system using the same are provided. A base station (BS) device includes a terminal grouping unit to group terminals associated with the BS device into a plurality of groups, a radio resource assignment unit to allocate a radio resource assigned to the BS device to each of the plurality of groups, a transmission unit to transmit information about a radio resource assigned to a first group of the plurality of groups to a terminal included in the first group, and a receiving unit to receive a ranging signal from the terminal using the radio resource assigned to the first group, wherein the terminal grouping unit assigns the terminal to be included in a second group of the plurality of groups where the ranging signal is not received by the receiving unit.
摘要翻译：提供了一种无线通信系统中的测距方法以及使用该方法的通信装置和/或系统。基站（BS）设备包括：终端分组单元，用于将与BS设备相关联的终端分组成多个组;无线电资源分配单元，将分配给所述BS设备的无线电资源分配给所述多个组中的每个组; 发送单元，将分配给所述多个组中的第一组的无线电资源的信息发送到包括在所述第一组中的终端;以及接收单元，使用分配给所述第一组的无线电资源从所述终端接收测距信号，其中，所述终端分组单元将所述终端分配给所述接收单元未接收到所述测距信号的所述多个组的第二组中。

6. 发明授权

US5134635A Convolutional decoder using soft-decision decoding with channel state information 失效
标题翻译：卷积解码器使用信道状态信息的软判决解码
公开(公告)号：US5134635A
公开(公告)日：1992-07-28
申请号：US560537
申请日：1990-07-30
申请人： Daehyoung Hong , Steven C. Jasper , Mark R. Poulin
发明人： Daehyoung Hong , Steven C. Jasper , Mark R. Poulin
IPC分类号： H03M13/41
CPC分类号： H03M13/41
摘要： A convolutional decoder which assigns bit metrics to at least one bit of a symbol in a multilevel system. This decoder uses soft-decision Viterbi decoding with channel state information of a convolutionally-encoded communication transmitted using multilevel modulation.
摘要翻译：卷积解码器，其将比特度量分配给多级系统中的符号的至少一位。该解码器对使用多级调制发送的卷积编码通信的信道状态信息进行软判定维特比解码。

7. 发明授权

US5410632A Variable hangover time in a voice activity detector 失效
标题翻译：语音活动检测器中的可变宿醉时间
公开(公告)号：US5410632A
公开(公告)日：1995-04-25
申请号：US812299
申请日：1991-12-23
申请人： Daehyoung Hong , Douglas A. Carlone
发明人： Daehyoung Hong , Douglas A. Carlone
IPC分类号： G10L11/02 , G10L3/00
CPC分类号： G10L25/78
摘要： Variable hangover time is provided for a speech coder (105). Voice activity within a speech message is detected (209) using a voice activity detector (VAD) (107), and a signal-to-noise ratio is calculated. A variable hangover time is calculated (215) and appended to the time in which voice activity is detected, producing an extended voice detection period. The speech coder (105) is enabled only during the extended voice detection period, thus saving power.
摘要翻译：为语音编码器（105）提供可变宿醉时间。使用语音活动检测器（VAD）（107）检测语音消息内的语音活动（209），并且计算信噪比。计算可变宿醉时间（215）并附加到检测到语音活动的时间，产生扩展的语音检测周期。语音编码器（105）仅在扩展语音检测周期期间被使能，从而节省功率。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式