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71. 发明公开

EP1382171A4 DYNAMICALLY VARYING LINEARITY SYSTEM FOR AN RF FRONT-END OF A COMMUNICATION DEVICE 有权
标题翻译：有用于通信设备的RF前端动态变化LINEARITY SYSTEM
公开(公告)号：EP1382171A4
公开(公告)日：2006-06-07
申请号：EP02715157
申请日：2002-03-18
申请人： SKYWORKS SOLUTIONS INC
发明人： RAMACHANDRAN BALASUBRAMANIAN
IPC分类号： H03G3/00 , H03G3/30 , H04B1/10 , H04B7/005 , H04L1/00 , H04W52/08 , H04W52/26 , H04L27/30 , H04B7/26 , H04L7/00
CPC分类号： H04W52/267 , H03G3/004 , H03G3/3042 , H03G2201/103 , H03G2201/307 , H03G2201/40 , H03G2201/508 , H04B1/109 , H04L1/0001 , H04W52/08 , H04W52/38
摘要： A dynamically varying linearity system 'DVLS' (102) capable of varying the linearity of a radio frequency (RF) front-end (112) of a communication device (100) responsive to receiving a condition signal indicating a desired mode of operation of a transmitter (112). The DVLS may include a condition signal indicative of the desired mode of operation and a controller (110) that adjusts the linearity of the transmitter responsive to the condition signal. The condition signal may be responsive to a user interface (106). The controller, responsive to the condition signal, may dynamically adjust the operating current of the transmitter.

72. 发明授权

EP1082810B1 A GAIN CONTROL CIRCUIT AND METHOD FOR PROVIDING GAIN CONTROL OF A VARIABLE AMPLIFIER USING A PILOT SIGNAL 失效转让
标题翻译：增益控制电路及方法增益控制VARIABLENVERTÄRKERS使用一个导频信号
公开(公告)号：EP1082810B1
公开(公告)日：2006-05-24
申请号：EP99914261.5
申请日：1999-03-29
申请人： MOTOROLA, INC.
发明人： ANDERSON, Mark, Brian
IPC分类号： H03F3/66 , H03G3/20 , H03G3/30 , H03F1/32 , H03G3/00
CPC分类号： H03G3/005
摘要： The present invention provides for a gain control circuit (10) and method for providing gain control of a variable amplification circuit (16) using a pilot signal. A pilot signal is added to the received signal. The pilot signal has at least a minimum signal level which when added to the signal received insures the sampled input signal has a level above the point where offset or low power errors are experienced. Preferably the pilot signal will be a sinusoidal signal having a frequency within the operational bandwidth of the amplifier (16), but outside the frequency range of the input signal.

73. 发明公开

EP1657816A2 Variable gain amplifier 审中-公开
标题翻译：可变增益放大器
公开(公告)号：EP1657816A2
公开(公告)日：2006-05-17
申请号：EP05256343.4
申请日：2005-10-12
申请人： Samsung Electronics Co., Ltd.
发明人： Ryu, Jae-young , Kang, Hyun-koo, 225-1702 Seongwon 3-cha , Kim, Dae-yeon , Lee, Jeong-ho
IPC分类号： H03G1/00 , H03G3/00
CPC分类号： H03G1/0088 , H03F3/45188 , H03G1/0029 , H03G3/001
摘要： A variable gain amplifier (VGA) having stable input impedance matching and a stable noise figure in spite of a variation of an amplification gain is provided. In an embodiment of the VGA, a first stage of a cascode amplification unit (3200) has a fixed impedance regardless of a change of an amplification gain, and a variable gain determination unit (220) comprised of a plurality of transistors is formed at an upper stage in the cascode amplification unit (3200). Accordingly, a change of an input impedance of the cascode amplification unit (3200) due to the change of the amplification gain is minimized. In another embodiment of the VGA, an amplification gain of an amplification unit is controlled by adjusting a voltage applied to the amplification unit by controlling a current to be output by a current supply source, and stable input impedance matching and a stable noise figure are obtained.
摘要翻译：提供了具有稳定的输入阻抗匹配和稳定的噪声系数，尽管放大增益变化的可变增益放大器（VGA）。在VGA的实施例中，无论放大增益的变化如何，共源共栅放大单元（3200）的第一级具有固定阻抗，并且包括多个晶体管的可变增益确定单元（220）形成在级联放大单元（3200）中的上级。因此，由于放大增益的变化引起的共源共栅放大单元（3200）的输入阻抗的改变被最小化。在VGA的另一个实施例中，放大单元的放大增益通过控制由电流源供应的电流来调节施加到放大单元的电压来控制，并且获得稳定的输入阻抗匹配和稳定的噪声系数。

74. 发明公开

EP1544996A4 VOLUME ADJUSTMENT DEVICE, DIGITAL AMPLIFIER, AND DIGITAL SIGNAL REPRODUCING DEVICE 有权
标题翻译：数码摄像机数码摄像机数码摄像机
公开(公告)号：EP1544996A4
公开(公告)日：2006-05-17
申请号：EP03784486
申请日：2003-07-25
申请人： SHARP KK
发明人： ISHIZAKI HIROYUKI
IPC分类号： H03F3/217 , H03G1/00 , H03G3/00 , H03G3/30 , H03G3/02
CPC分类号： H03F3/2173 , H03F3/2171 , H03F2200/331 , H03G1/0088 , H03G3/004 , H03G3/3021
摘要： A digital amplifier (21) amplifies the amplitude of a one-bit digital signal, received from a ΔΣ block (22), by allowing gate drive circuits (28, 29) to drive output transistors (Q21-Q24) so as to switch the power supply voltage (V0) supplied from a variable voltage power supply (30). A variable voltage power supply (32) sets the drive voltage of the output transistors (Q21, Q23), driven by the top gate drive circuit (28), to the voltage (V0 + V1) determined by adding a constant voltage (V1) supplied to the bottom gate drive circuit (29) to the power supply voltage (V0) supplied from the variable voltage power supply (30) to vary the voltage following up to the power supply voltage (V0). This configuration enable the drive voltage to be a requisite minimum value without affecting the switching operation of the output transistors (Q21, Q23). Therefore, the power consumption of the top gate drive circuit (28) can be reduced during small power operation.
摘要翻译：数字放大器（21）使栅极驱动电路（28,29）驱动输出晶体管（Q21〜Q24），并切换从可变电压电源（30）供给的电源电压（V0），从而放大振幅从DELTA SIGMA块（22）输出的1位数字信号。可变电压电源（32）改变上栅极驱动电路（28）驱动输出晶体管（Q21，Q23）的驱动电压，作为通过将（i）恒压（ V1）提供给下栅极驱动电路（29），以（ii）电源电压（V0），以对应于电源电压（V0）。因此，驱动电压最小化而不影响输出晶体管（Q21，Q23）的开关操作。结果，可以在降低音量的同时降低上栅极驱动电路（28）的功耗。

75. 发明公开

EP1611741A1 INTEGRATED TUNER 有权
标题翻译：集成调谐器
公开(公告)号：EP1611741A1
公开(公告)日：2006-01-04
申请号：EP04722370.6
申请日：2004-03-22
申请人： Koninklijke Philips Electronics N.V.
发明人： MOTTE, Bruno, P., J-M. , FORTUIN, Robbert, P.
IPC分类号： H04N5/53 , H03G3/00
CPC分类号： H03G1/0088 , H04N5/53
摘要： An integrated tuner comprises a step AGC amplifier (1) that is adjusted only during a vertical synchronization interval. A receiver comprises such an integrated tuner and an IF demodulation circuit (5,6) for providing a vertical sync signal to the integrated tuner.

76. 发明公开

EP1611678A1 VOLUME CONTROL DEVICE FOR DIGITAL SIGNALS 审中-公开
标题翻译：量控制设备的数字信号
公开(公告)号：EP1611678A1
公开(公告)日：2006-01-04
申请号：EP04722930.7
申请日：2004-03-24
申请人： Koninklijke Philips Electronics N.V.
发明人： SCHINKEL, Daniel , VAN TUIJL, Adrianus, J., M. , NUIJTEN, Petrus, A., C., M.
IPC分类号： H03G3/00 , H03G7/00 , H03M7/00
CPC分类号： H03G3/002
摘要： A digital volume control device comprises a logic unit for volume control of digital input signals. Successively supplied m-bits words with maximally k bits active, derived from the output signals of or supplied by a volume control (4) with a quantizer (5) element the filtered m-bits workds are passed, however, with only the j most significant active bits of these filtered signals. The noise shaper operates with a frequency that is a k/j-fold of the frequency by which the m-bits words are supplied. An up-sampler (3) is provided for operation frequency adjustment of the filtered m-bits words to the noise shaper. This operation frequency is at least a factor k/j greater than the sample rate of the digital input signals. The control signals for the logic unit are formed by the m-bits words passed by the quantizer.

77. 发明公开

EP1552606A1 RADIO WAVE RECEPTION DEVICE, RADIO WAVE CLOCK, AND REPEATER 有权
标题翻译：无线电波接收装置中，电波钟，和Repeater
公开(公告)号：EP1552606A1
公开(公告)日：2005-07-13
申请号：EP03756655.1
申请日：2003-10-16
申请人： Casio Computer Co., Ltd.
发明人： SOMEYA, Kaoru
IPC分类号： H03G3/00
CPC分类号： H03G3/3068
摘要： A received low-frequency standard radio wave, which is an amplitude modulation signal, is converted to an intermediate frequency signal Sa, and is output to a detection circuit (620) and an AGC circuit (618). The detection circuit (620) and AGC circuit (618) generates an RF control signal Sfl and IF control signal Sf2 from the input intermediate frequency signal Sa, and controls an RF control circuit (611) and IF control circuit (616) by outputting the generated RF control signal Sf1 and IF control signal Sf2 to the RF control circuit (611) and IF control circuit (616). By this a radio wave reception device (61) can speed up AGC operation. [Selected drawing] FIG.2

78. 发明公开

EP1547242A2 DEVICE AND METHOD FOR DETERMINING THE LEVEL OF AN INPUT SIGNAL INTENDED TO BE APPLIED TO A RECEIVING SYSTEM 有权
标题翻译：装置和方法，用于确定输入信号的电平，要应用到是系统
公开(公告)号：EP1547242A2
公开(公告)日：2005-06-29
申请号：EP03798292.3
申请日：2003-09-15
申请人： Koninklijke Philips Electronics N.V.
发明人： SENESCHAL, François , MAUPAS, Alexandre
IPC分类号： H03G3/00 , H03G3/30
CPC分类号： H03G3/001 , H03G3/3068
摘要： The invention relates to a device for determining the level of an input signal (101) intended to be applied to a receiving system (TUN), said receiving system (TUN) comprising arranged in series a set of discrete gain amplifiers (102-103-105-107), a selective filter (104), a mixer (106), said receiving system (TUN) being intended to deliver an output signal (108), said device comprising : measuring means (116) for measuring the level of said output signal (108) in a given frequency channel, means (120) for determining the real gain (G1) of said set of amplifiers (102-103-105-107) in said given frequency channel, means (121) for determining the real gain (G2) of said selective filter (104) in said given frequency channel, calculation means (122) for deriving the level of the input signal (101) from the level of the output signal (108), the real gain (G1) of said set of amplifiers (102-103-105-107) and from the real gain (G2) of said selective filter (104). Use : RSSI

79. 发明授权

EP0759230B1 CMOS PROGRAMMABLE RESISTOR-BASED TRANSCONDUCTOR 失效
标题翻译： CMOS可编程跨电阻器
公开(公告)号：EP0759230B1
公开(公告)日：2004-12-22
申请号：EP96908502.6
申请日：1996-03-01
申请人： LATTICE SEMICONDUCTOR CORPORATION
发明人： GORECKI, James, L. , YANG, Yaohua
IPC分类号： H03G3/00 , H03F3/72
CPC分类号： H03F3/34 , H03F3/45 , H03F3/72 , H03G3/00 , H03G3/10
摘要： A CMOS programmable resistor-based transconductor receives a differential input voltage and generates a differential output current. The transconductor includes a degenerate pair of transistors linearized by servo feedback, and further includes a string of series-connected resistors defining a group of tap points. Two selected tap points in the resistor string are selected by digital control of MOS switches and are connected, respectively, to the feedback input of the two amplifiers in the feedback loops. Because no DC current flows through the MOS switches into the high impedance inputs of the amplifiers, the differential input voltage is impressed across a portion of the resistor string residing between the two selected tap points, and the conversion gain is determined by the value of this portion of the resistor string.

80. 发明公开

EP1217729A3 Broadcast data receivers and adaptive gain control thresholds to optimise received signal quality 审中-公开
标题翻译：广播数据接收器和自适应Verstärkungsregelungsschwellwerte以优化接收信号质量
公开(公告)号：EP1217729A3
公开(公告)日：2004-10-27
申请号：EP01309758.9
申请日：2001-11-20
申请人： Pace Micro Technology PLC
发明人： Rowe, James , Garrett, Peter
IPC分类号： H03G3/30 , H03G3/00 , H04N5/44
CPC分类号： H04N5/4446 , H04N5/4401 , H04N5/46 , H04N21/426 , H04N21/4383 , H04N21/44209
摘要： The invention relates to a method for optimising signal reception for a broadcast data receiver. Broadcast Data Receivers are used to receive digital data transmitted from a remote location, process the same and then generate video, audio and auxiliary services. However the Broadcast data receiver is typically located in a household and can be susceptible to general and/or local conditions which affect the reception of the data signals at different frequencies. The present invention provides a method for optimising the signal reception at the broadcast data receiver location by allowing the analysis of amplitude gain control levels of the broadcast data receiver and then selecting the amplitude gain control levels and/or other levels which optimise the quality of the received signal at each frequency.
摘要翻译：本发明涉及一种用于广播数据接收器优化信号接收的方法。广播数据接收器用于接收反从远程位置mitted数字数据，处理相同的，然后生成的视频，音频和辅助服务。然而，广播数据接收器通常位于一个家庭和可能易受通用和/或局部以不同的频率影响数据信号的接收条件。本发明提供了一种用于通过允许广播数据接收器的振幅的增益控制水平的分析优化在广播数据接收器位置的信号的接收，然后选择振幅增益控制水平和/或其他级别哪优化的质量在每个频率上接收的信号。

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