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11.发明授权公开(公告)号：US07610026B2
公开(公告)日：2009-10-27
申请号：US11503422
申请日：2006-08-11
IPC分类号： H04B1/04
CPC分类号： H04B1/0475
摘要： The present invention provides a transmitter architecture operable to cancel non-data-related direct current (DC) components therein. One method to cancel transmitter non-data-related DC offsets includes generating a baseband digital null signal. Then the digital null signal is converted to a pair of differential analog voltage null signals. The pair of differential analog voltage null signals may be converted to a pair of differential analog current null signals. The pair of differential analog current null signals is provided to a pair of matched impedances to generate a pair of voltage signals across the pair of matched impedances. A voltage offset results from comparing the pair of voltages generated across the pair of matched impedances. Then a current offset is determined based on the voltage offset.
摘要翻译： 本发明提供了一种可消除非数据相关直流（DC）分量的发射机结构。 消除发射机非数据相关DC偏移的一种方法包括产生基带数字无效信号。 然后数字零位信号被转换成一对差分模拟电压无效信号。 该差分模拟电压空信号可以转换成一对差分模拟电流无效信号。 一对差分模拟电流零点信号被提供给一对匹配的阻抗，以在一对匹配的阻抗上产生一对电压信号。 通过比较在该对匹配阻抗上产生的一对电压，产生电压偏移。 然后根据电压偏移确定电流偏移。
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公开(公告)号：US07092674B2
公开(公告)日：2006-08-15
申请号：US10460578
申请日：2003-06-12
IPC分类号： H04B1/38
CPC分类号： G05F3/30
摘要： A multi-mode band-gap current reference includes a band-gap current mode module and an adjustable current source module. The band-gap current module provides a band-gap reference current and a voltage representation of the band-gap reference current. The adjustable current source module is operably coupled to produce a process-independent band-gap current and a voltage representation of the process-independent band-gap current. The adjustable current source module produces the process-independent band-gap current based on a difference between the voltage representation of the band-gap reference current and the voltage representation of the process-independent band-gap current.
摘要翻译： 多模式带隙电流基准包括带隙电流模式模块和可调电流源模块。 带隙电流模块提供带隙参考电流和带隙参考电流的电压表示。 可调电流源模块可操作地耦合以产生与工艺无关的带隙电流的与工艺无关的带隙电流和电压表示。 可调电流源模块基于带隙基准电流的电压表示与过程无关带隙电流的电压表示之间的差异产生与工艺无关的带隙电流。
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公开(公告)号：US20060116082A1
公开(公告)日：2006-06-01
申请号：US11000599
申请日：2004-11-30
申请人： Michael Pan
发明人： Michael Pan
IPC分类号： H04B1/00
CPC分类号： H04B1/036
摘要： Aspects of compensating for transmitter output power may comprise sampling an on-chip transmitter circuit temperature at various time instants and determining a feedback temperature compensation value. At least one digital-to-analog converter may be adjusted by utilizing the feedback temperature compensation value, which may correspond to the sampled temperature. The digital-to-analog converter may be an I-component digital-to-analog converter and/or a Q-component digital-to-analog converter. At least a portion of the on-chip transmitter circuit may be characterized to determine power output dependence of the on-chip transmitter circuit on temperature variation of the on-chip transmitter circuit. Based on this characterization, a feedback temperature compensation value that may correspond to the sampled temperature may be used to adjust the digital-to-analog converter. The feedback temperature compensation value may be, for example, from a lookup table or an algorithm.
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公开(公告)号：US06959222B1
公开(公告)日：2005-10-25
申请号：US09548849
申请日：2000-04-13
申请人： Kent Vuong , Michael Pan , Ernest Seagraves
发明人： Kent Vuong , Michael Pan , Ernest Seagraves
CPC分类号： G06F17/142
摘要： An engine for processing functions used in audio algorithms. The engine runs in parallel with a digital signal processor (DSP) in an audio chip to increase performance for that chip. Functions performed by the engine include biquad filtering and inverse discrete cosine transform (IDCT) including pre-multiplication, inverse Fast Fourier transform (IFFT), and post-multiplication, which would otherwise be performed by the DSP. The DSP is therefore free to perform other functions demanded by the chip. Resources in the engine are processed in a pipeline structure and are thus highly utilized. Data are stored in a predefined order to increase efficiency.
摘要翻译： 用于处理音频算法中使用的功能的引擎。 引擎与音频芯片中的数字信号处理器（DSP）并行运行，以提高该芯片的性能。 由引擎执行的功能包括二进制滤波和反相离散余弦变换（IDCT），包括预乘，逆快速傅立叶变换（IFFT）和后乘法，否则将由DSP执行。 因此，DSP可以自由地执行芯片所要求的其他功能。 引擎中的资源以管道结构进行处理，因此得到高度的利用。 以预定义的顺序存储数据以提高效率。
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15.发明申请METHOD AND SYSTEM FOR OBTAINING MAXIMUM GAIN OF A PASSIVE UPCONVERSION MIXER UTILIZED IN A TRANSMITTER 有权用于获得在发射机中使用的被动式逆变混频器的最大增益的方法和系统公开(公告)号：US20100311329A1
公开(公告)日：2010-12-09
申请号：US12477301
申请日：2009-06-03
CPC分类号： H03C1/36 , H03D7/1458 , H03D7/1466 , H03D2200/0074
摘要： A RF transmitter is operable to transmit a signal at a frequency specified by the Bluetooth protocol. A passive upconversion mixer, which comprises a pair of MOSFET switches, is utilized inside the RF transmitter. The passive upconversion mixer is operable to receive analog local oscillator (LO) signals to be utilized for controlling operation of each of the pair of MOSFET switches to transmit signals with maximum gain. A MOS threshold voltage VTH and a DC component of a received baseband signal, VBB—DC, are determined for each of the pair of MOSFET switches. The determined VTH and the determined VBB—DC of the received baseband signal are combined such as VTH+VBB—DC and compared with a DC component of the received LO signals, VLO—DC. The VLO—DC is set equal to VTH+VBB—DC, accordingly, to provide maximum gain from the passive upconversion mixer for signal transmission.
摘要翻译： RF发射器可操作以以由蓝牙协议指定的频率发送信号。 无源上变频混频器包括一对MOSFET开关，用于RF发射器内部。 无源上变频混频器可操作以接收模拟本地振荡器（LO）信号，以用于控制一对MOSFET开关中的每一个的操作以发送具有最大增益的信号。 为这对MOSFET开关中的每一个确定接收基带信号VBB-DC的MOS阈值电压VTH和DC分量。 所接收的基带信号的确定的VTH和所确定的VBB-DC被组合，例如VTH + VBB-DC，并与所接收的LO信号VLO-DC的DC分量进行比较。 VLO-DC设置为等于VTH + VBB-DC，从而提供来自被动上变频混频器的信号传输的最大增益。
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公开(公告)号：US07109813B2
公开(公告)日：2006-09-19
申请号：US10459929
申请日：2003-06-12
IPC分类号： H03B5/32
摘要： A fast starting on-chip crystal oscillation circuit includes a power supply (Vdd) integrated circuit pad, a power return (Vss) integrated circuit pad, a 1st crystal integrated circuit pad, a 2nd crystal integrated circuit pad, a 1st transistor, a 2nd transistor, an inverter, a resistor, and two capacitors. The 1st and 2nd crystal IC pads couple a 1st and 2nd node of an external crystal oscillator to the fast starting on-chip crystal oscillation circuit. The 1st transistor, when activated, couples a power source connection of the inverter to the Vdd IC pad. The 2nd transistor, when activated, couples a power return connection of the inverter to the Vss IC pad. The input of the inverter is coupled to the 1st crystal IC pad and the output of the inverter is coupled to the 2nd crystal IC pad. The resistor is coupled in parallel with the inverter while the 1st capacitor is coupled to the input of the inverter and to the Vss IC pad. The 2nd capacitor is coupled to the output of the inverter and to the Vss IC pad. When the 1st and 2nd transistors are activated, an impulse voltage occurs between the 1st and 2nd crystal IC pads to initiate the oscillation of the crystal oscillator.
摘要翻译： 快速启动片上晶体振荡电路包括电源（Vdd）集成电路焊盘，功率返回（V SUB）集成电路焊盘，1 - >电容器耦合到反相器的输入端并连接到V SS芯片。 第二和第二电容器耦合到反相器的输出端和V SS芯片焊盘。 当第一和第二和第二晶体管被激活时，在第一和第二和第二晶体管之间产生脉冲电压， 晶体IC焊盘启动晶体振荡器的振荡。
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公开(公告)号：US07088193B2
公开(公告)日：2006-08-08
申请号：US11140779
申请日：2005-05-31
IPC分类号： H03B5/32
摘要： A fast starting on-chip crystal oscillation circuit includes a (Vdd) IC pad, a (Vss) IC pad, a 1st crystal IC pad, a 2nd crystal IC pad, a 1st transistor, a 2nd transistor, an inverter, a resistor, and two capacitors. The 1st and 2nd crystal IC pads couple an external crystal oscillator to the fast starting on-chip crystal oscillation circuit. The 1st and 2nd transistors, when activated, couple power to the inverter. The input of the inverter is coupled to the 1st crystal IC pad and to the 1st capacitor. The output of the inverter is coupled to the 2nd crystal IC pad and to the 2nd capacitor. The resistor is coupled in parallel with the inverter. When the 1st and 2nd transistors are activated, an impulse voltage occurs between the 1st and 2nd crystal IC pads to initiate the oscillation of the crystal oscillator.
摘要翻译： 一种快速启动片上晶体振荡电路包括（Vdd）IC焊盘，（V ss ss）IC焊盘，第一半导体芯片， 晶体IC焊盘，2晶体IC焊盘，第1晶体管，第2晶体管，反相器，电阻器和二极管 电容器 第一和第二晶体IC焊盘将外部晶体振荡器耦合到快速启动片上晶体振荡电路。 第一和第二和第二晶体管在被激活时将功率耦合到逆变器。 反相器的输入耦合到第一晶体IC焊盘和第一个<！ - SIPO
- >电容器。 反相器的输出耦合到第二晶体IC焊盘和第二个电容器。 电阻器与逆变器并联耦合。 当第一和第二和第二晶体管被激活时，在第一和第二和第二晶体管之间产生脉冲电压， 晶体IC焊盘启动晶体振荡器的振荡。 -
公开(公告)号：US4109315A
公开(公告)日：1978-08-22
申请号：US718741
申请日：1976-08-30
申请人： Michael Pan
发明人： Michael Pan
CPC分类号： G06F15/0225
摘要： A wristwatch calculator is provided with a keyboard for the entry of information into and control of operations of the apparatus. The keyboard comprises an array of switches connected in an X-Y matrix that is scanned by row and column to find and identify a key that has been depressed. The scanner is operated only when calculator circuitry in the apparatus is in a sleep or inactive mode in order to save battery power.
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