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公开(公告)号：US20080008325A1
公开(公告)日：2008-01-10
申请号：US11482595
申请日：2006-07-08
Applicant: Michael Holmstrom , Bengt Edholm , Sven Mattisson
Inventor： Michael Holmstrom , Bengt Edholm , Sven Mattisson
IPC: H04H5/00
Abstract: A method and ASIC for canceling crosstalk between a first stereo channel and a second stereo channel, wherein a first signal is input to a first output amplifier for the first channel, and a second signal is input to a second output amplifier for the second channel, and an output load for each output amplifier is connected between each output amplifier and a reference amplifier. In one embodiment, the first and second signals are split prior to inputting the signals to the first and second output amplifiers, and a gain-adjusted portion of each signal is added to the other signal on the inputs of the output amplifiers. In another embodiment, the first and second input signals are again split into two paths each. While a first path of each signal is inputted to each signal's respective output amplifier, the second paths of the first and second signals are adding together. The resulting sum is adjusted by a gain function, biased by a suitable DC voltage, and input to the reference amplifier.
Abstract translation: 一种用于消除第一立体声通道和第二立体声通道之间的串扰的方法和ASIC，其中第一信号被输入到第一通道的第一输出放大器，第二信号被输入到用于第二通道的第二输出放大器， 并且每个输出放大器的输出负载连接在每个输出放大器和参考放大器之间。 在一个实施例中，在将信号输入到第一和第二输出放大器之前，第一和第二信号被分离，并且每个信号的增益调整部分被添加到输出放大器的输入端上的另一个信号。 在另一个实施例中，第一和第二输入信号又被分成两个路径。 当每个信号的第一路径被输入到每个信号的相应输出放大器时，第一和第二信号的第二路径被加在一起。 所得到的和通过增益函数调整，由适当的直流电压偏置，并输入到参考放大器。
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公开(公告)号：US07269144B2
公开(公告)日：2007-09-11
申请号：US11271173
申请日：2005-11-11
IPC: H04Q1/00
CPC classification number: H04B1/44 , H04B1/3833 , H04B1/408 , H04B1/715 , H04B15/00 , H04B2001/7152 , H04J3/10 , H04L5/1461 , H04L27/122
Abstract: An entire radio transceiver can be completely integrated into one IC chip. In order to integrate the IF filters on the chip, a heterodyne architecture with a low IF is used. A single, directly modulated VCO is used for both up-conversion during transmission, and down-conversion during reception. Bond-wires are used as resonators in the oscillator tank for the VCO. A TDD scheme is used in the air interface to eliminate cross-talk or leakage. A Gaussian-shaped binary FSK modulation scheme is used to provide a number of other implementation advantages.
Abstract translation: 整个无线电收发器可以完全集成到一个IC芯片中。 为了在芯片上集成IF滤波器，使用具有低IF的外差架构。 单个直接调制的VCO用于传输期间的上转换和接收期间的下变频。 在VCO的振荡器槽中使用接合线作为谐振器。 在空中接口中使用TDD方案来消除串扰或泄漏。 高斯形二进制FSK调制方案用于提供许多其他实现优点。
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公开(公告)号：US07263373B2
公开(公告)日：2007-08-28
申请号：US11129828
申请日：2005-05-16
Applicant: Sven Mattisson
Inventor： Sven Mattisson
IPC: H04Q7/20
CPC classification number: H04M1/605 , H04M1/6016
Abstract: A proximity detector for use in a mobile telephone having at least a microphone and a loudspeaker operatively connected to a signal processor is presented. The proximity detector includes data processing and control modules having a module for controlling the signal processor for activating the loudspeaker to reproduce an acoustic control signal. A correlator correlates a control signal received directly by the microphone and a control signal being reflected from a user of the telephone and then received by the microphone to determine the distance between the telephone and the user. A signal level controller controls the signal processor to vary the signal level of an audible signal reproduced by the loudspeaker depending on the determined distance between the telephone and the user.
Abstract translation: 提供了一种用于移动电话中的接近检测器，其具有至少一个可操作地连接到信号处理器的麦克风和扬声器。 接近检测器包括具有用于控制信号处理器以激活扬声器以再现声控信号的模块的数据处理和控制模块。 相关器将由麦克风直接接收的控制信号和从电话用户反射的控制信号相关联，然后由麦克风接收以确定电话和用户之间的距离。 信号电平控制器控制信号处理器，以根据确定的电话和用户之间的距离来改变扬声器再现的可听信号的信号电平。
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公开(公告)号：US07102447B2
公开(公告)日：2006-09-05
申请号：US10837573
申请日：2004-05-04
Applicant: Sven Mattisson , Hans Hagberg
Inventor： Sven Mattisson , Hans Hagberg
IPC: H01L7/00
CPC classification number: H03B5/04
Abstract: Disclosed are methods and circuit configurations for reference frequency signal distribution circuitry that suppress unwanted spurious components introduced by way of RF signal leakage. The methods and circuitry may include relocating components of a buffer along a reference frequency signal path, thereby suppressing conductive and inductive components associated with RF leakage paths entering the circuitry. A filter also may be used after the buffer to suppress spurious components resulting from subsampling of unwanted tones in a phase frequency detector or intermodulation between the reference signal and interference tones in the signal-path of the buffer.
Abstract translation: 公开了用于抑制通过RF信号泄漏引入的不想要的杂散分量的参考频率信号分配电路的方法和电路配置。 方法和电路可以包括沿着参考频率信号路径重新定位缓冲器的部件，从而抑制与进入电路的RF泄漏路径相关联的导电和感应部件。 也可以在缓冲器之后使用滤波器来抑制由相位频率检测器中的不想要的音调的二次采样引起的杂散分量或者在缓冲器的信号路径中的参考信号和干扰音调之间的互调。
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公开(公告)号：US07079590B2
公开(公告)日：2006-07-18
申请号：US11220034
申请日：2005-09-06
Applicant: Sven Mattisson , Leif Wilhelmsson , Peter Markenlöv
Inventor： Sven Mattisson , Leif Wilhelmsson , Peter Markenlöv
CPC classification number: H04L25/061 , H03F3/45986 , H03K5/003 , H04L25/062 , H04L27/142
Abstract: A method of estimating a DC offset value of a signal includes estimating a DC offset value of a preamble part of the signal using a pair of diodes (D1, D2) and a resistor (R) connected in parallel. During receipt of the data part of the signal, the diode pair (D1, D2) is switched out of the circuit by a switch (SW). During reception of the data part, the DC level is estimated using a low pass filter (R,C).
Abstract translation: 估计信号的DC偏移值的方法包括：使用并联连接的一对二极管（D 1，D 2）和电阻器（R）来估计信号的前导码部分的DC偏移值。 在接收信号的数据部分期间，二极管对（D 1，D 2）通过开关（SW）从电路切换出来。 在接收数据部分期间，使用低通滤波器（R，C）来估计DC电平。
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Patent Agency Ranking
公开(公告)号：US20060049883A1
公开(公告)日：2006-03-09
申请号：US10526244
申请日：2003-08-14
Applicant: Sven Mattisson
Inventor： Sven Mattisson
IPC: H03B5/32
Abstract: A balanced crystal oscillator circuit comprising: a piezoelectric element Xtal (207; 215; 222,221; 313); a first oscillator subcircuit (202; 210; 218; 302) incorporating a transistor (204;212;220;304); and a second oscillator subcircuit (201;209;217;301) incorporating a transistor (203; 211; 219; 303); wherein the transistors each have different types of transistor terminals (C,B,E; D;G;S), and wherein the oscillator subcircuits are configured with at least three interconnections. Each interconnection comprise a pair of like type of transistor terminals; wherein a first of said interconnections constitutes a connection to a ground reference (gnd); a second of said interconnections is via a first resonator element (207;215;223;313); and a third of said interconnections is via a second resonator element (208;216;224;314); said first and second circuits are arranged to interact by means of said first and second resonator elements to form a balanced oscillator signal. A dual common base or a dual common collector configuration is preferred.
Abstract translation: 一种平衡晶体振荡器电路，包括：压电元件Xtal（207; 215; 222,221; 313）; 包括晶体管（204; 212; 220; 304）的第一振荡器子电路（202; 210; 218; 302） 以及并入有晶体管（203; 211; 219; 303）的第二振荡器子电路（201; 209; 217; 301） 其中所述晶体管各自具有不同类型的晶体管端子（C，B，E; D; G; S），并且其中所述振荡器子电路配置有至少三个互连。 每个互连包括一对类似的晶体管端子; 其中所述互连中的第一个构成与地面参考（gnd）的连接; 所述互连中的第二个是经由第一谐振器元件（207; 215; 223; 313）; 并且所述互连中的三分之一经由第二谐振器元件（208; 216; 224; 314）; 所述第一和第二电路被布置成通过所述第一和第二谐振器元件相互作用以形成平衡振荡器信号。 双重共用基底或双共同收集器配置是优选的。
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公开(公告)号：US06950479B2
公开(公告)日：2005-09-27
申请号：US09976862
申请日：2001-10-15
Applicant: Sven Mattisson , Leif Wilhelmsson , Peter Markenlöv
Inventor： Sven Mattisson , Leif Wilhelmsson , Peter Markenlöv
CPC classification number: H04L25/061 , H03F3/45986 , H03K5/003 , H04L25/062 , H04L27/142
Abstract: A method of estimating a DC offset value of a signal includes estimating a DC offset value of a preamble part of the signal using a pair of diodes (D1, D2) and a resistor (R) connected in parallel. During receipt of the data part of the signal, the diode pair (D1, D2) is switched out of the circuit by a switch (SW). During reception of the data part, the DC level is estimated using a low pass filter (R,C).
Abstract translation: 估计信号的DC偏移值的方法包括：使用并联连接的一对二极管（D 1，D 2）和电阻器（R）来估计信号的前导码部分的DC偏移值。 在接收信号的数据部分期间，二极管对（D 1，D 2）通过开关（SW）从电路切换出来。 在接收数据部分期间，使用低通滤波器（R，C）来估计DC电平。
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公开(公告)号：US06891423B2
公开(公告)日：2005-05-10
申请号：US10383370
申请日：2003-03-06
Applicant: Christian Björk , Magnus Wiklund , Sven Mattisson
Inventor： Christian Björk , Magnus Wiklund , Sven Mattisson
CPC classification number: H03D7/1441 , H03D7/1433 , H03D7/1458 , H03D7/1483 , H03D7/165 , H03D2200/009
Abstract: A quadrature switching mixer is provided for mixing a received RF signal and a local oscillator signal, while rejecting an image signal associated with the RF signal. Input signal components in quadrature, that is, I and Q input components derived from the received RF signal, are respectively coupled through first and second input paths to corresponding commuting switches in a configuration of switches. Each of the switches operates to multiply respective quadrature components of RF and local oscillator signals to provide quadrature output signal components. A unidirectional device, such as a buffer amplifier included in a signal splitter, is placed in each input path to prevent any portion of an output signal component from leaking backward through one of the input paths to the other input path, and thus to the other output signal component.
Abstract translation: 提供了正交开关混频器，用于混合接收的RF信号和本地振荡器信号，同时拒绝与RF信号相关联的图像信号。 正交的输入信号分量，即从接收的RF信号导出的I和Q输入分量分别通过第一和第二输入路径耦合到交换机的配置中的对应的通勤交换机。 每个开关操作以将RF和本地振荡器信号的相应正交分量相乘以提供正交输出信号分量。 诸如信号分离器中包括的缓冲放大器的单向设备被放置在每个输入路径中，以防止输出信号分量的任何部分通过输入路径中的一条向后泄漏到另一输入路径，从而向另一个 输出信号分量。
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公开(公告)号：US06744294B1
公开(公告)日：2004-06-01
申请号：US09567015
申请日：2000-05-09
Applicant: Lars Svensson , Sven Mattisson
Inventor： Lars Svensson , Sven Mattisson
IPC: H03K512
CPC classification number: H03F1/223 , H03F2200/114 , H03F2200/417 , H03K17/162 , H03K19/00361
Abstract: A method and apparatus for minimizing harmonic content in a digital signal driver circuit are disclosed. A digital input signal applied to an input node generates a corresponding digital output in a circuit with two or more MOS devices in cascode connection with each other. The slew rate of one or more edge transitions associated with the output signal are controlled using one or more parasitic capacitances associated with the fabrication of two or more cascode connected MOS devices. The two or more cascode connected MOS devices may further each have gate electrodes connected to a fixed potential so as to minimize said harmonic content. A control signal may further be applied to each gate electrode to turn off a leakage current path between source and drain electrodes. Harmonics may further be controlled by limiting a conductance between gate electrodes and fixed potentials using an active or passive device.
Abstract translation: 公开了一种用于最小化数字信号驱动器电路中的谐波含量的方法和装置。 施加到输入节点的数字输入信号在具有彼此并联连接的两个或多个MOS器件的电路中产生相应的数字输出。 使用与两个或更多个共源共栅连接的MOS器件的制造相关联的一个或多个寄生电容来控制与输出信号相关联的一个或多个边沿跃迁的转换速率。 两个或更多个共源共栅连接的MOS器件还可以进一步具有连接到固定电位的栅电极，以使所述谐波含量最小化。 还可以将控制信号施加到每个栅电极以关闭源极和漏极之间的漏电流路径。 通过使用有源或无源器件限制栅电极和固定电位之间的电导可以进一步控制谐波。
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公开(公告)号：US06714530B1
公开(公告)日：2004-03-30
申请号：US09271552
申请日：1999-03-18
Applicant: Jaap Haartsen , Sven Mattisson
Inventor： Jaap Haartsen , Sven Mattisson
IPC: H04B7212
CPC classification number: H04B7/26
Abstract: A short-range radio transmitter of a communication device comprising a short-range radio and a long-range radio is controlled to delay packets which are scheduled to be transmitted at the same time as a long-range transmitter of the long-range radio commences or discontinues to transmit. A frequency synthesizer of the short-range radio is thereby not affected by a change in the power supply voltage which otherwise occurs at these moments due to transmission with high power by the long-range transmitter.
Abstract translation: 控制包括短距离无线电和远距离无线电的通信设备的短距离无线电发射机，以延迟与远程无线电的远距离发射机同时发射的分组。 或停止传输。 因此短距离无线电的频率合成器不受由于长距离发射机的高功率传输而在这些时刻发生的电源电压的变化的影响。
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