Clock generator, system on a chip integrated circuit and methods for use therewith
    62.
    发明授权
    Clock generator, system on a chip integrated circuit and methods for use therewith 有权
    时钟发生器,片上系统集成电路及其使用方法

    公开(公告)号:US07323921B2

    公开(公告)日:2008-01-29

    申请号:US11287550

    申请日:2005-11-22

    IPC分类号: G06F1/04

    CPC分类号: G06F1/06

    摘要: A system on a chip integrated circuit includes a first circuit module and N other circuit modules that are operable to produce at least one output signal based on at least one input signal. A reference oscillator for generating a base clock signal for the first circuit module. A clock delay generator generates N delayed clock signals at a corresponding N clock delays, wherein N is greater than or equal to 2. The N delayed clock signals are provided to the N other circuit modules.

    摘要翻译: 片上集成电路系统包括第一电路模块和N个其他电路模块,其可操作以基于至少一个输入信号产生至少一个输出信号。 用于产生第一电路模块的基本时钟信号的参考振荡器。 时钟延迟发生器以相应的N个时钟延迟产生N个延迟时钟信号,其中N大于或等于2.N个延迟的时钟信号提供给N个其他电路模块。

    System for signal mixing and method thereof
    63.
    发明授权
    System for signal mixing and method thereof 有权
    信号混合系统及其方法

    公开(公告)号:US07139330B1

    公开(公告)日:2006-11-21

    申请号:US09999540

    申请日:2001-10-31

    申请人: Michael R. May

    发明人: Michael R. May

    IPC分类号: H04L27/06

    CPC分类号: H04B1/04 H03D7/00 H04B1/30

    摘要: A system and methods are provided for mixing input signal data values with values of a sinusoidal waveform. The sinusoidal waveform is normalized at a value greater than one and sampled to generate a fixed set of values for every period of the sinusoidal waveform. The fixed set of values is then converted to a plurality of bit-shift summation sets. The bit-shift summation sets are applied to the input signal by binary shifting the input signal data values. The binary shifts represent a mixing of the fixed set of values associated with the sinusoidal waveform and the input signal values.

    摘要翻译: 提供了一种用于将输入信号数据值与正弦波形的值混合的系统和方法。 将正弦波形归一化为大于1的值,并对该正弦波形的每个周期产生固定的一组值。 然后将固定值的值转换为多个位移求和集合。 通过二进制移位输入信号数据值将位移求和集合施加到输入信号。 二进制移位表示与正弦波形相关联的固定值的值与输入信号值的混合。

    Flexible asymmetrical digital subscriber line ADSL transmitter, remote
terminal using same, and method therefor
    65.
    发明授权
    Flexible asymmetrical digital subscriber line ADSL transmitter, remote terminal using same, and method therefor 失效
    灵活的非对称数字用户线ADSL发射机,远程终端使用相同,及其方法

    公开(公告)号:US5781728A

    公开(公告)日:1998-07-14

    申请号:US616819

    申请日:1996-03-15

    摘要: A flexible asymmetrical digital subscriber line (ADSL) transmitter is able to operate simultaneously with integrated services digital network (ISDN) terminal equipment (TE) using a common telephone line (18). The ADSL transmitter changes the frequency content of a frequency-encoded ADSL signal (104) so that its frequency content does not overlap the frequency content of the ISDN TE signal. A corresponding ADSL receiver located within a central office (CO) adapts to the changed frequency content, allowing the ADSL signal to be transmitted over the telephone line without substantial loss of signal integrity. In one embodiment, an ADSL transmitter (100) converts ADSL symbols making up the frequency-encoded ADSL signal (104) into a corresponding time domain signal. The transmitter (100) then interpolates the time domain signal and high pass filters the interpolated signal. This high pass filtered signal is then converted to analog form, bandpass filtered, and driven onto the telephone line (18).

    摘要翻译: 灵活的非对称数字用户线(ADSL)发射机能够使用公用电话线(18)与综合业务数字网(ISDN)终端设备(TE)同时工作。 ADSL发射机改变频率编码ADSL信号(104)的频率内容,使其频率内容不与ISDN TE信号的频率内容重叠。 位于中心局(CO)内的对应的ADSL接收机适应于改变的频率内容,允许ADSL信号通过电话线传输,而不会显着损失信号完整性。 在一个实施例中,ADSL发射机(100)将构成频率编码的ADSL信号(104)的ADSL符号转换成对应的时域信号。 然后,发射机(100)内插时域信号,并对内插信号进行高通滤波。 然后将该高通滤波信号转换为模拟形式,经过滤波,并被驱动到电话线路(18)上。

    Voltage controlled oscillator (VCO) with symmetrical output and logic
gate for use in same
    66.
    发明授权
    Voltage controlled oscillator (VCO) with symmetrical output and logic gate for use in same 失效
    具有对称输出和逻辑门的压控振荡器(VCO)用于同一个

    公开(公告)号:US5426384A

    公开(公告)日:1995-06-20

    申请号:US172973

    申请日:1993-12-27

    申请人: Michael R. May

    发明人: Michael R. May

    摘要: A voltage controlled oscillator (VCO) (23) includes a periodic signal generator (30) such as a comparator (42)followed by a latch (43), and a logic gate such as a NAND gate (31) connected to the output of the latch (43) to adjust for asymmetries in the output signals from the latch (43). In one embodiment, the NAND gate (31) includes two pullup transistors (80, 81) receiving first and second output signals from the latch and connected between a first power supply voltage terminal and an output node (86). Two switching branches (82, 83 and 84, 85) each including two transistors are connected between the output node (86) and a second power supply voltage terminal. The order of the input signals received by the two transistors is reversed between the two switching branches (82, 83 and 84, 85) to compensate for any duty cycle asymmetries. A frequency divider (32) divides the output of the NAND gate (31) to complete the duty cycle adjustment.

    摘要翻译: 压控振荡器(VCO)(23)包括周期性信号发生器(30),比如比较器(42),随后是锁存器(43),以及诸如与非门(31)的逻辑门连接到 所述锁存器(43)用于调整来自所述锁存器(43)的输出信号中的不对称性。 在一个实施例中,与非门(31)包括从锁存器接收第一和第二输出信号并连接在第一电源电压端和输出节点(86)之间的两个上拉晶体管(80,81)。 每个包括两个晶体管的开关分支(82,83和84,85)连接在输出节点(86)和第二电源电压端子之间。 由两个晶体管接收的输入信号的顺序在两个开关分支(82,83和84,85)之间相反,以补偿任何占空比不对称性。 分频器(32)分割NAND门(31)的输出,以完成占空比调整。

    Method and apparatus for sensing common mode error
    67.
    发明授权
    Method and apparatus for sensing common mode error 失效
    用于检测共模误差的方法和装置

    公开(公告)号:US5420550A

    公开(公告)日:1995-05-30

    申请号:US265898

    申请日:1994-06-27

    申请人: Michael R. May

    发明人: Michael R. May

    摘要: Common mode errors may be sensed and corrected by receiving an output signal 105-106 and comparing the output signal 105-106 with a predetermined signal level. When the output signal 105-106 is in a first relationship with respect to the predetermined signal level a source current is provided to a integrating element 110. If, however, the output 105-106 is in a second relationship with respect to the predetermined signal level, a sink current is provided to the integrating circuit element 110. Regardless of whether a sink or source current is provided to the integrating circuit element 110, the integrating circuit element 110 generates a common mode information signal 123 which is used to correct for common mode errors.

    摘要翻译: 可以通过接收输出信号105-106并将输出信号105-106与预定信号电平进行比较来检测和校正共模误差。 当输出信号105-106相对于预定信号电平处于第一关系时,源电流被提供给积分元件110.然而,如果输出105-106相对于预定信号处于第二关系 电平时,向积分电路元件110提供吸收电流。不管集电电路元件110是集电极还是源极电流,积分电路元件110都生成共模信息信号123,其用于校正公共 模式错误。

    POWER MANAGEMENT FOR A BATTERY-POWERED HANDHELD AUDIO DEVICE
    68.
    发明申请
    POWER MANAGEMENT FOR A BATTERY-POWERED HANDHELD AUDIO DEVICE 有权
    用于电池供电的手持式音频设备的电源管理

    公开(公告)号:US20140323074A1

    公开(公告)日:2014-10-30

    申请号:US14330484

    申请日:2014-07-14

    IPC分类号: H04B1/16 H04B1/10 H03G3/20

    摘要: A method for managing power of a battery powered handheld audio device by receiving an indicia of signal quality for a received continuous-time radio signal. The method compares the indicia of signal quality to a signal threshold. Upon a favorable comparison, enacting a first analog signal conditioning setting. Upon an unfavorable comparison, enacting a second analog signal conditioning setting. The method further provides, upon the favorable comparison, disabling a digital filtering operation, and upon the unfavorable comparison, enabling the digital filtering operation.

    摘要翻译: 一种用于通过接收对所接收的连续时间无线电信号的信号质量的标记来管理电池供电的手持音频设备的电力的方法。 该方法将信号质量的标记与信号阈值进行比较。 在有利的比较下,颁布第一个模拟信号调节设置。 在不利的比较下,执行第二模拟信号调节设置。 该方法进一步提供了有利的比较,禁用数字滤波操作,并且在不利的比较中,实现数字滤波操作。

    Integrated circuit having radio receiver and methods for use therewith
    69.
    发明授权
    Integrated circuit having radio receiver and methods for use therewith 有权
    具有无线电接收机的集成电路及其使用方法

    公开(公告)号:US08130871B2

    公开(公告)日:2012-03-06

    申请号:US11328830

    申请日:2006-01-09

    CPC分类号: H04B1/406 H03D5/00 H04B1/0003

    摘要: An integrated circuit includes a radio receiver for receiving a received radio signal having a plurality of channel signals, each of the plurality of channel signals being modulated at one of a corresponding plurality of carrier frequencies. The radio receiver converts a selected one of the plurality of channel signals into a demodulated signal. An interface clock generator generates a first interface clock at a first interface clock frequency that varies based on the selected one of the plurality of channel signals. The first interface clock frequency, and integer multiples of the first clock frequency are not substantially equal to the carrier frequency of the selected one of the plurality of channel signals. A driver module drives a device interface with a device based on the first interface clock.

    摘要翻译: 一种集成电路包括用于接收具有多个信道信号的接收无线电信号的无线电接收机,多个信道信号中的每一个被以相应的多个载频中的一个调制。 无线电接收机将所选择的多个信道信号转换为解调信号。 接口时钟发生器以基于多个信道信号中选择的一个信道信号而变化的第一接口时钟频率生成第一接口时钟。 第一接口时钟频率和第一时钟频率的整数倍基本上不等于多个信道信号中所选择的一个的载波频率。 驱动器模块基于第一接口时钟驱动与设备的设备接口。

    Method and apparatus for synchronized channel transmission
    70.
    发明授权
    Method and apparatus for synchronized channel transmission 有权
    用于同步信道传输的方法和装置

    公开(公告)号:US07961759B2

    公开(公告)日:2011-06-14

    申请号:US10376806

    申请日:2003-02-28

    IPC分类号: H04J3/06

    摘要: A method and apparatus for synchronized channel transmission are disclosed. One embodiment of the method comprises: generating a first data stream and a second data stream; packetizing the first data stream to produce a first plurality of data packets; packetizing the second data stream to produce a second plurality of data packets; baseband processing the first plurality of data packets to produce a first plurality of symbols for each of the first plurality of data packets; baseband processing the second plurality of data packets to produce a second plurality of symbols for each of the second plurality of data packets; converting the first plurality of symbols into a first radio frequency signal; converting the second plurality of symbols into a second radio frequency signal; and synchronizing at least one of: generating the first and the second data streams, packetizing the first and second data streams, baseband processing the first and second plurality of data packets, and converting the first and second plurality of symbols.

    摘要翻译: 公开了一种用于同步信道传输的方法和装置。 该方法的一个实施例包括:产生第一数据流和第二数据流; 打包第一数据流以产生第一多个数据分组; 打包第二数据流以产生第二多个数据分组; 基带处理所述第一多个数据分组以产生所述第一多个数据分组中的每一个的第一多个符号; 基带处理所述第二多个数据分组以产生所述第二多个数据分组中的每一个的第二多个符号; 将所述第一多个符号转换为第一射频信号; 将所述第二多个符号转换为第二射频信号; 以及同步以下各项中的至少一个:产生所述第一和第二数据流,对所述第一和第二数据流进行分组,对所述第一和第二多个数据分组进行基带处理,以及转换所述第一和第二多个符号。