会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 1. 发明公开
    • TCM 디코더용 64-QAM 브랜치 매트릭 회로
    • 用于TRLLIS编码调制器(TCM)解码器的64位四分频调制(QAM)分支公差电路
    • KR1020010001709A
    • 2001-01-05
    • KR1019990021123
    • 1999-06-08
    • 동부대우전자 주식회사
    • 제갈헌
    • H04N7/12
    • PURPOSE: A 64-quadrature amplitude modulation(QAM) branch metric circuit for a trellis coded modulator(TCM) decoder is provided to implement an in-phase(I) branch metric circuit so as to find the first to the fourth branch metrics. CONSTITUTION: An in-phase(I) branch metric circuit comprises as follows. A first adder(210) adds each of I signals of a 64-QAM and each of 64-quadrature amplitude modulation(QAM) constellation values. An absolute value circuit(220) makes each of the added first to eighth values absolute values. A comparison selector(230) reciprocally compares the first to the eighth values, and selects a first and a second minimal value. First/second registers(240,250) store the first and the second minimal value. A second adder(260) reciprocally adds the first/the second minimal values from the comparison selector(230) to the first/the second minimal values from the first/the second registers(240,250). A multiplexer(270) responds to a control signal from an exterior, and selects four signals among ninth to twelfth added values and the first/the second minimal values from the second adder(260), then generates first to fourth I branch metrics.
    • 目的:提供用于网格编码调制器(TCM)解码器的64-正交幅度调制(QAM)分支度量电路以实现同相(I)分支度量电路,以便找到第一至第四分支度量。 构成:同相(I)分支度量电路包括如下。 第一加法器(210)将64-QAM的I信号和64-正交幅度调制(QAM)星座值中的每一个相加。 绝对值电路(220)使得每个添加的第一至第八值绝对值。 比较选择器(230)相互比较第一和第八值,并选择第一和第二最小值。 第一/第二寄存器(240,250)存储第一和第二最小值。 第二加法器(260)将来自比较选择器(230)的第一/第二最小值与第一/第二寄存器(240,250)的第一/第二最小值相加。 多路复用器(270)响应来自外部的控制信号,并从第二加法器(260)中选择第九至第十二加法中的四个信号和第一/第二最小值,然后产生第一至第四I分支度量。
    • 2. 发明授权
    • TCM 디코더용 64-QAM 브랜치 매트릭 회로
    • TCM디코더용64-QAM브랜치매트릭회로
    • KR100432799B1
    • 2004-05-22
    • KR1019990021123
    • 1999-06-08
    • 동부대우전자 주식회사
    • 제갈헌
    • H04N7/12
    • PURPOSE: A 64-quadrature amplitude modulation(QAM) branch metric circuit for a trellis coded modulator(TCM) decoder is provided to implement an in-phase(I) branch metric circuit so as to find the first to the fourth branch metrics. CONSTITUTION: An in-phase(I) branch metric circuit comprises as follows. A first adder(210) adds each of I signals of a 64-QAM and each of 64-quadrature amplitude modulation(QAM) constellation values. An absolute value circuit(220) makes each of the added first to eighth values absolute values. A comparison selector(230) reciprocally compares the first to the eighth values, and selects a first and a second minimal value. First/second registers(240,250) store the first and the second minimal value. A second adder(260) reciprocally adds the first/the second minimal values from the comparison selector(230) to the first/the second minimal values from the first/the second registers(240,250). A multiplexer(270) responds to a control signal from an exterior, and selects four signals among ninth to twelfth added values and the first/the second minimal values from the second adder(260), then generates first to fourth I branch metrics.
    • 目的:提供用于网格编码调制器(TCM)解码器的64正交幅度调制(QAM)分支量度电路,以实现同相(I)分支量度电路,以便找到第一到第四分支量度。 构成:同相(I)分支度量电路包括如下。 第一加法器(210)将64-QAM的每个I信号和64-正交幅度调制(QAM)星座值中的每一个相加。 绝对值电路(220)使所添加的第一至第八值中的每一个绝对值。 比较选择器(230)相互比较第一和第八值,并选择第一和第二最小值。 第一/第二寄存器(240,250)存储第一和第二最小值。 第二加法器(260)将来自比较选择器(230)的第一/第二最小值与来自第一/第二寄存器(240,250)的第一/第二最小值相互相加。 多路复用器(270)响应来自外部的控制信号,并且从第二加法器(260)中选择第九至第十二相加值中的四个信号和第一/第二最小值,然后生成第一至第四I分支度量。
    • 3. 发明授权
    • TCM 디코더용 256-QAM 브랜치 매트릭 회로
    • TCM디코더용256-QAM브랜치매트릭회로
    • KR100398969B1
    • 2003-09-19
    • KR1019990021124
    • 1999-06-08
    • 동부대우전자 주식회사
    • 제갈헌
    • H04N7/06
    • PURPOSE: A 256-quadrature amplitude modulation(QAM) branch metric circuit for a trellis coded modulator(TCM) decoder is provided to implement an in-phase(I) branch metric circuit so as to find the first to the fourth branch metrics. CONSTITUTION: An in-phase(I) branch metric circuit comprises as follows. A first adder(210) adds each of I signals of a 256-QAM and each of 256-quadrature amplitude modulation(QAM) constellation values. An absolute value circuit(220) makes each of the added first to sixteenth values absolute values. A comparison selector(230) reciprocally compares the first to the sixteenth values, and selects a first and a second minimal value. First/second registers(240,250) store the first and the second minimal value. A second adder(260) reciprocally adds the first/the second minimal values from the comparison selector(230) to the first/the second minimal values from the first/the second registers(240,250). A multiplexer(270) responds to a control signal from an exterior, and selects four signals among seventeenth to twentieth added values and the first/the second minimal values from the second adder(260), then generates first to fourth I branch metrics.
    • 目的:提供用于网格编码调制器(TCM)解码器的256正交幅度调制(QAM)分支量度电路,以实现同相(I)分支量度电路以找到第一到第四分支量度。 构成:同相(I)分支度量电路包括如下。 第一加法器(210)将256-QAM的I信号和256-正交幅度调制(QAM)星座值中的每一个的I信号中的每一个相加。 绝对值电路(220)使所添加的第一至第十六值中的每一个绝对值。 比较选择器(230)相互比较第一和第十六值,并选择第一和第二最小值。 第一/第二寄存器(240,250)存储第一和第二最小值。 第二加法器(260)将来自比较选择器(230)的第一/第二最小值与来自第一/第二寄存器(240,250)的第一/第二最小值相互相加。 多路复用器(270)响应来自外部的控制信号,并且从第二加法器(260)中选择第十七至第二十相加值中的四个信号和第一/第二最小值,然后生成第一至第四I分支度量。
    • 4. 发明公开
    • TCM 디코더용 256-QAM 브랜치 매트릭 회로
    • 用于TRELLIS编码调制器(TCM)解码器的256位四分频调制(QAM)分支公差电路
    • KR1020010001710A
    • 2001-01-05
    • KR1019990021124
    • 1999-06-08
    • 동부대우전자 주식회사
    • 제갈헌
    • H04N7/06
    • H04L27/38H04L25/03197
    • PURPOSE: A 256-quadrature amplitude modulation(QAM) branch metric circuit for a trellis coded modulator(TCM) decoder is provided to implement an in-phase(I) branch metric circuit so as to find the first to the fourth branch metrics. CONSTITUTION: An in-phase(I) branch metric circuit comprises as follows. A first adder(210) adds each of I signals of a 256-QAM and each of 256-quadrature amplitude modulation(QAM) constellation values. An absolute value circuit(220) makes each of the added first to sixteenth values absolute values. A comparison selector(230) reciprocally compares the first to the sixteenth values, and selects a first and a second minimal value. First/second registers(240,250) store the first and the second minimal value. A second adder(260) reciprocally adds the first/the second minimal values from the comparison selector(230) to the first/the second minimal values from the first/the second registers(240,250). A multiplexer(270) responds to a control signal from an exterior, and selects four signals among seventeenth to twentieth added values and the first/the second minimal values from the second adder(260), then generates first to fourth I branch metrics.
    • 目的:提供用于网格编码调制器(TCM)解码器的256-正交幅度调制(QAM)分支度量电路以实现同相(I)分支度量电路,以便找到第一到第四分支度量。 构成:同相(I)分支度量电路包括如下。 第一加法器(210)将256-QAM的I信号和256-正交幅度调制(QAM)星座值中的每一个相加。 绝对值电路(220)使得每个添加的第一至第十六值绝对值。 比较选择器(230)相互比较第一和第十六值,并选择第一和第二最小值。 第一/第二寄存器(240,250)存储第一和第二最小值。 第二加法器(260)将来自比较选择器(230)的第一/第二最小值与第一/第二寄存器(240,250)的第一/第二最小值相加。 多路复用器(270)响应来自外部的控制信号,并从第二加法器(260)中选择第十七至二十加法中的四个信号和第一/第二最小值,然后产生第一到第四个I分支度量。