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公开(公告)号：WO2005015753A3
公开(公告)日：2005-02-17
申请号：PCT/US2004/025324
申请日：2004-08-04
Applicant: STMICROELECTRONICS, INC. , NORSWORTHY, Steven, R. , THAM, Andrew , REDGRAVE, Jason, Rupert , GREY, Aubrey, Arthur
IPC: H03M1/00
Abstract: A radio frequency digital-to-analog converter with a programmable current output. In exemplary aspects of the invention, improved apparatus and methods for providing (i) current mirror matching, (ii) enhanced current pulse rising edge performance, (ii) reduced base voltage swing, and (iv) compensated high voltage swing, are provided. The foregoing apparatus and methods can be applied to any RF signal application (wireless or otherwise), including for example wireless cellular handsets.
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公开(公告)号：WO2005015752A2
公开(公告)日：2005-02-17
申请号：PCT/US2004/025323
申请日：2004-08-04
Applicant: STMICROELECTRONICS, INC.
Inventor： NORSWORTHY, Steven, R. , REDGRAVE, Jason, Rupert
IPC: H04B
CPC classification number: H03H17/0628 , G06F5/14 , G06F2205/061 , H03H17/0614
Abstract: Improved interpolator and decimator apparatus and methods, including the addition of an elastic storage element in the signal path. In one exemplary embodiment, the elastic element comprises a FIFO which advantageously allows short term variation in sample clocks to be absorbed, and also provides a feedback mechanism for controlling a delta-sigma modulated modulo-N counter based sample clock generator. The elastic element combined with a delta-sigma modulator and counter creates a noise-shaped frequency lock loop without additional components, resulting in a much simplified imterpolator and decimator.
Abstract translation: 改进的插入器和抽取器装置和方法，包括在信号路径中添加弹性存储元件。 在一个示例性实施例中，弹性元件包括有利地允许吸收采样时钟中的短期变化的FIFO，并且还提供用于控制基于德耳塔西格玛调制的基于模N计数器的采样时钟发生器的反馈机制。 与delta-sigma调制器和计数器相结合的弹性元件创建了一个噪声形状的频率锁定环，无需额外的元件，从而得到简化的插入器和抽取器。
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公开(公告)号：WO2005015746A2
公开(公告)日：2005-02-17
申请号：PCT/US2004/025223
申请日：2004-08-04
Applicant: STMICROELECTRONICS, INC.
Inventor： NORSWORTHY, Steven, R. , REDGRAVE, Jason, Rupert
IPC: H03M
Abstract: A noise-shaping coder with variable or reconfigurable characteristics is disclosed. In one exemplary embodiment, an improved apparatus for signal modulation is disclosed. The apparatus generally comprises a noise-shaping coder having programmable coefficients, programmable coder order, programmable oversampling frequency, and/or programmable dither. In a second exemplary embodiment, an improved method for implementing noise shaping coding is disclosed. The apparatus generally comprises a means for switching from one order coder to another order coder, as well as switching oversampling frequency.
Abstract translation: 公开了具有可变或可重新配置特性的噪声整形编码器。 在一个示例性实施例中，公开了一种用于信号调制的改进装置。 该装置通常包括具有可编程系数，可编程编码器顺序，可编程过采样频率和/或可编程抖动的噪声整形编码器。 在第二示例性实施例中，公开了一种用于实现噪声整形编码的改进方法。 该装置通常包括用于从一个订单编码器切换到另一个订单编码器的装置，以及切换过采样频率。
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Patent Agency Ranking
公开(公告)号：EP1869769B1
公开(公告)日：2013-05-01
申请号：EP04786460.8
申请日：2004-08-04
Applicant: STMicroelectronics, Inc.
IPC: H03M1/00
CPC classification number: H03F3/3432 , H03F1/22 , H03F2200/331 , H03M1/0863 , H03M1/742
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公开(公告)号：EP1668856A2
公开(公告)日：2006-06-14
申请号：EP04786458.2
申请日：2004-08-04
Applicant: STMicroelectronics, Inc
Inventor： NORSWORTHY, Steven, R. , REDGRAVE, Jason, Rupert
IPC: H04L25/49
Abstract: A noise-shaping coder with variable or reconfigurable characteristics is disclosed. In one exemplary embodiment, an improved apparatus for signal modulation is disclosed. The apparatus (see figure 1) generally comprises a noise-shaping coder having programmable coefficients, (see figure 1, CSEL), programmable coder order (see figure 1, MSEL), programmable oversampling frequency (see figure 1, CKEN), and/or programmable dither (see figure 1, D). In a second exemplary embodiment, an improved method for implementing noise shaping coding is disclosed. The apparatus generally compromises a means for switching from one order coder to another order coder, as well as switching oversampling frequency.
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公开(公告)号：EP1668856B1
公开(公告)日：2012-02-08
申请号：EP04786458.2
申请日：2004-08-04
Applicant: STMicroelectronics, Inc
Inventor： NORSWORTHY, Steven, R. , REDGRAVE, Jason, Rupert
Abstract: A noise-shaping coder with variable or reconfigurable characteristics is disclosed. In one exemplary embodiment, an improved apparatus for signal modulation is disclosed. The apparatus (see figure 1) generally comprises a noise-shaping coder having programmable coefficients, (see figure 1, CSEL), programmable coder order (see figure 1, MSEL), programmable oversampling frequency (see figure 1, CKEN), and/or programmable dither (see figure 1, D). In a second exemplary embodiment, an improved method for implementing noise shaping coding is disclosed. The apparatus generally compromises a means for switching from one order coder to another order coder, as well as switching oversampling frequency.
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公开(公告)号：EP1869769A2
公开(公告)日：2007-12-26
申请号：EP04786460.8
申请日：2004-08-04
Applicant: STMicroelectronics, Inc.
IPC: H03M1/00
CPC classification number: H03F3/3432 , H03F1/22 , H03F2200/331 , H03M1/0863 , H03M1/742
Abstract: A radio frequency digital-to-analog converter with a programmable current output. In exemplary aspects of the invention, improved apparatus and methods for providing (i) current mirror matching, (ii) enhanced current pulse rising edge performance, (ii) reduced base voltage swing, and (iv) compensated high voltage swing, are provided. The foregoing apparatus and methods can be applied to any RF signal application (wireless or otherwise), including for example wireless cellular handsets.
Abstract translation: 具有可编程电流输出的射频数字 - 模拟转换器。 在本发明的示例性方面中，提供了用于提供（i）电流镜像匹配，（ii）增强的电流脉冲上升沿性能，（ii）降低的基极电压摆幅和（iv）补偿的高电压摆幅的改进的装置和方法。 上述装置和方法可以应用于任何RF信号应用（无线或其他），包括例如无线蜂窝手机。
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8.发明公开
公开(公告)号：EP1665701A2
公开(公告)日：2006-06-07
申请号：EP04780201.2
申请日：2004-08-04
Applicant: STMicroelectronics, Inc
Inventor： NORSWORTHY, Steven, R. , REDGRAVE, Jason, Rupert
IPC: H04L27/10
CPC classification number: H03H17/0628 , G06F5/14 , G06F2205/061 , H03H17/0614
Abstract: Improved interpolator (1304) and decimator (1324) apparatus and methods, including the addition of an elastic storage element (192) comprises a FIFO which advantageously allows short term variation in sample clocks to be absorbed, and also provides a feedback mechanism for controlling a delta-sigma modulated modulo-N counter based sample clock generator. The elastic element combined with a delta-sigma modulator and counter creates a noise-shaped frequency lock loop without additional components, resulting in a much simplified imterpolator and decimator.
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