Method and apparatus for adaptive control of PLL loop bandwidth
    1.
    发明授权
    Method and apparatus for adaptive control of PLL loop bandwidth 有权
    用于PLL环路带宽自适应控制的方法和装置

    公开(公告)号:US07062004B1

    公开(公告)日:2006-06-13

    申请号:US09905511

    申请日:2001-07-13

    IPC分类号: H04L7/00

    摘要: A scheme for reducing jitter in high-speed digital communication by adaptively controlling the loop bandwidth of a receiver PLL to reduce the relative jitter between the recovered data and clock. The scheme uses phase pointer activity to represent the relative jitter. The phase pointer activity is measured and used to control the receiver PLL loop bandwidth. The receiver PLL loop bandwidth is repeatedly incremented or decremented by a step size based on the comparison between a newly measured activity value and the old activity value, until the phase pointer activity reaches a minimum. Because the PLL performance requirement of the transmitter can be relaxed, compatibility with legacy transmitters and multi-vendor transmitters is enhanced. Because tight control of fabrication process parameters of PLLs may be relaxed, the fabrication yield may also be improved.

    摘要翻译: 通过自适应地控制接收机PLL的环路带宽以减少恢复的数据和时钟之间的相对抖动来减少高速数字通信中的抖动的方案。 该方案使用相位指针活动来表示相对抖动。 测量相位指针活动并用于控制接收机PLL环路带宽。 基于新测量的活动值和旧活动值之间的比较,接收机PLL环路带宽被重复地增加或减小步长,直到相位指针活动达到最小值。 因为发射机的PLL性能要求可以放宽,与传统发射机和多厂商发射机的兼容性得到增强。 由于PLL的制造工艺参数的紧密控制可以被放宽,所以也可以提高制造成品率。

    Combining a clock signal and a data signal
    2.
    发明授权
    Combining a clock signal and a data signal 有权
    组合时钟信号和数据信号

    公开(公告)号:US07158593B2

    公开(公告)日:2007-01-02

    申请号:US10099533

    申请日:2002-03-15

    IPC分类号: H04L7/00

    摘要: A method of transmitting data in a system including at least one data channel and a separate clock channel is disclosed. The method involves combining a clock signal to be transmitted on the clock channel with a data signal to generate a combined clock and data signal. In one embodiment, the data signal has been generated from data words using an encoding scheme that shifts an energy spectrum of the data signal away from an energy spectrum of the clock signal. In another embodiment, the clock signal has a plurality of pulses each having a front edge and a back edge, and the data signal is modulated onto the clock signal by moving at least one edge (i.e. front or back or both) of the plurality of pulses, thereby to create a combined clock and data signal.

    摘要翻译: 公开了一种在包括至少一个数据信道和单独的时钟信道的系统中发送数据的方法。 该方法包括将要在时钟信道上发送的时钟信号与数据信号组合以产生组合的时钟和数据信号。 在一个实施例中,数据信号已经使用使数据信号的能谱偏离时钟信号的能谱的编码方案从数据字生成。 在另一个实施例中,时钟信号具有多个脉冲,每个脉冲具有前沿和后沿,并且数据信号通过移动多个脉冲的至少一个边缘(即,前面或背面或两者)被调制到时钟信号上 脉冲,从而创建一个组合的时钟和数据信号。

    Method and circuit for adaptive equalization of multiple signals in response to a control signal generated from one of the equalized signals
    3.
    发明授权
    Method and circuit for adaptive equalization of multiple signals in response to a control signal generated from one of the equalized signals 有权
    响应于从一个均衡信号产生的控制信号,多个信号的自适应均衡的方法和电路

    公开(公告)号:US07502411B2

    公开(公告)日:2009-03-10

    申请号:US10794015

    申请日:2004-03-05

    申请人: Ook Kim Gyudong Kim

    发明人: Ook Kim Gyudong Kim

    IPC分类号: H03H7/30 H03H7/40

    CPC分类号: H04L25/03019

    摘要: In preferred embodiments, an adaptive equalization circuit including at least two equalization filters (each for equalizing a signal transmitted over a multi-channel serial link) and control circuitry for generating an equalization control signal for use by all the filters. The control circuitry generates the control signal in response to an equalized signal produced by one of the filters, and asserts the control signal to all the filters. Preferably, one filter generates an equalized fixed pattern signal in response to a fixed pattern signal (e.g., a clock signal), each other filter equalizes a data signal, and the control circuitry generates the control signal in response to the equalized fixed pattern signal. In other embodiments, the invention is an adaptive equalization circuit including an equalization filter and circuitry for generating a control signal for the filter in response to a signal indicative of a predetermined fixed pattern, a receiver including an adaptive equalization circuit, a system including such a receiver, and a method for adaptive equalization of signals received over a multi-channel serial link.

    摘要翻译: 在优选实施例中,自适应均衡电路包括至少两个均衡滤波器(每个用于均衡通过多通道串行链路传输的信号)和用于产生用于所有滤波器的均衡控制信号的控制电路。 控制电路响应于由滤波器之一产生的均衡信号而产生控制信号,并将控制信号置为全部滤波器。 优选地,一个滤波器响应于固定模式信号(例如,时钟信号)产生均衡的固定模式信号,每个其他滤波器均衡数据信号,并且控制电路响应于均衡的固定模式信号而产生控制信号。 在其他实施例中,本发明是一种自适应均衡电路,包括均衡滤波器和用于响应于指示预定固定模式的信号产生用于滤波器的控制信号的电路,包括自适应均衡电路的接收机, 接收机和用于通过多声道串行链路接收的信号的自适应均衡的方法。

    Cable with circuitry for asserting stored cable data or other information to an external device or user
    4.
    发明申请
    Cable with circuitry for asserting stored cable data or other information to an external device or user 有权
    电缆,用于将存储的电缆数据或其他信息断言给外部设备或用户

    公开(公告)号:US20050182876A1

    公开(公告)日:2005-08-18

    申请号:US10781405

    申请日:2004-02-18

    IPC分类号: G06F13/00 G06F13/38

    CPC分类号: G06F13/385

    摘要: A cable including circuitry for asserting information to a user or external device and a system including such a cable. The cable can include conductors, a memory storing cable data, and circuitry configured to respond to a request received on at least one of the conductors by accessing at least some of the cable data and asserting the accessed data serially to at least one of the conductors (e.g., for transmission to an external device). Other aspects of the invention are methods for accessing cable data stored in a cable and optionally using the data (e.g., to implement equalization). The cable data can be indicative of all or some of cable type, grade, speed, length, and impedance, a date code, a frequency-dependent attenuation table, far-end crosstalk and EMI-related coefficients, common mode radiation, intra pair skew, and other information. The cable can include a radiation-emitting element and circuitry for generating driving signals for causing the radiation-emitting element to produce an appropriate color, brightness, and/or blinking pattern.

    摘要翻译: 包括用于向用户或外部设备断言信息的电路的电缆以及包括这种电缆的系统。 电缆可以包括导体,存储电缆数据的存储器和经配置以通过访问至少一些电缆数据来响应于在至少一个导体上接收到的请求的电路,并且将所访问的数据串行地认定到至少一个导体 (例如,用于传输到外部设备)。 本发明的其他方面是用于访问存储在电缆中并且可选地使用数据(例如,实现均衡)的电缆数据的方法。 电缆数据可以表示电缆类型,等级,速度,长度和阻抗的全部或一些,日期代码,频率相关衰减表,远端串扰和EMI相关系数,共模辐射,内部对 歪斜等信息。 电缆可以包括辐射发射元件和用于产生用于使辐射发射元件产生适当的颜色,亮度和/或闪烁图案的驱动信号的电路。

    Cable with circuitry for asserting stored cable data or other information to an external device or user
    5.
    发明授权
    Cable with circuitry for asserting stored cable data or other information to an external device or user 有权
    电缆,用于断开存储的电缆数据或其他信息到外部设备或用户的电路

    公开(公告)号:US07500032B2

    公开(公告)日:2009-03-03

    申请号:US11848758

    申请日:2007-08-31

    IPC分类号: G06F13/38

    CPC分类号: G06F13/385

    摘要: A cable including circuitry for asserting information to a user or external device and a system including such a cable. The cable can include conductors, a memory storing cable data, and circuitry configured to respond to a request received on at least one of the conductors by accessing at least some of the cable data and asserting the accessed data serially to at least one of the conductors (e.g., for transmission to an external device). Other aspects of the invention are methods for accessing cable data stored in a cable and optionally using the data (e.g., to implement equalization). The cable data can be indicative of all or some of cable type, grade, speed, length, and impedance, a date code, a frequency-dependent attenuation table, far-end crosstalk and EMI-related coefficients, common mode radiation, intra pair skew, and other information. The cable can include a radiation-emitting element and circuitry for generating driving signals for causing the radiation-emitting element to produce an appropriate color, brightness, and/or blinking pattern.

    摘要翻译: 包括用于向用户或外部设备断言信息的电路的电缆以及包括这种电缆的系统。 电缆可以包括导体,存储电缆数据的存储器和经配置以通过访问至少一些电缆数据来响应于在至少一个导体上接收到的请求的电路,并且将所访问的数据串行地认定到至少一个导体 (例如,用于传输到外部设备)。 本发明的其他方面是用于访问存储在电缆中并且可选地使用数据(例如,实现均衡)的电缆数据的方法。 电缆数据可以表示电缆类型,等级,速度,长度和阻抗的全部或一些,日期代码,频率相关衰减表,远端串扰和EMI相关系数,共模辐射,内部对 歪斜等信息。 电缆可以包括辐射发射元件和用于产生用于使辐射发射元件产生适当的颜色,亮度和/或闪烁图案的驱动信号的电路。

    Cable with Circuitry for Asserting Stored Cable Data or Other Information to an External Device or User
    6.
    发明申请
    Cable with Circuitry for Asserting Stored Cable Data or Other Information to an External Device or User 有权
    电缆用于将存储的电缆数据或其他信息提供给外部设备或用户

    公开(公告)号:US20080022023A1

    公开(公告)日:2008-01-24

    申请号:US11848758

    申请日:2007-08-31

    IPC分类号: G06F13/38 G06F3/00

    CPC分类号: G06F13/385

    摘要: A cable including circuitry for asserting information to a user or external device and a system including such a cable. The cable can include conductors, a memory storing cable data, and circuitry configured to respond to a request received on at least one of the conductors by accessing at least some of the cable data and asserting the accessed data serially to at least one of the conductors (e.g., for transmission to an external device). Other aspects of the invention are methods for accessing cable data stored in a cable and optionally using the data (e.g., to implement equalization). The cable data can be indicative of all or some of cable type, grade, speed, length, and impedance, a date code, a frequency-dependent attenuation table, far-end crosstalk and EMI-related coefficients, common mode radiation, intra pair skew, and other information. The cable can include a radiation-emitting element and circuitry for generating driving signals for causing the radiation-emitting element to produce an appropriate color, brightness, and/or blinking pattern.

    摘要翻译: 包括用于向用户或外部设备断言信息的电路的电缆以及包括这种电缆的系统。 电缆可以包括导体,存储电缆数据的存储器和经配置以通过访问至少一些电缆数据来响应于在至少一个导体上接收到的请求的电路,并且将所访问的数据串行地认定到至少一个导体 (例如,用于传输到外部设备)。 本发明的其他方面是用于访问存储在电缆中并且可选地使用数据(例如,实现均衡)的电缆数据的方法。 电缆数据可以表示电缆类型,等级,速度,长度和阻抗的全部或一些,日期代码,频率相关衰减表,远端串扰和EMI相关系数,共模辐射,内部对 歪斜等信息。 电缆可以包括辐射发射元件和用于产生用于使辐射发射元件产生适当的颜色,亮度和/或闪烁图案的驱动信号的电路。

    TRANSMISSION OF ALTERNATIVE CONTENT OVER STANDARD DEVICE CONNECTORS
    8.
    发明申请
    TRANSMISSION OF ALTERNATIVE CONTENT OVER STANDARD DEVICE CONNECTORS 有权
    通过标准设备连接器传输替代内容

    公开(公告)号:US20100109795A1

    公开(公告)日:2010-05-06

    申请号:US12606096

    申请日:2009-10-26

    IPC分类号: H01P1/10

    摘要: Transmission of alternative content over standard device connectors. An embodiment of a method includes connecting a first device to a second device utilizing a standard connector, the connector including multiple pins, and detecting whether the second device is operating in a standard mode or an alternative mode. If the second device is operating in the alternative mode, then switching one or more pins of the standard connector for the alternative mode and transmitting or receiving signals for the alternative mode via the plurality of pins of the standard connector.

    摘要翻译: 通过标准设备连接器传输替代内容。 一种方法的实施例包括使用标准连接器将第一设备连接到第二设备,连接器包括多个引脚,以及检测第二设备是否以标准模式或替代模式操作。 如果第二设备在替代模式下操作,则切换用于替代模式的标准连接器的一个或多个引脚,以及通过标准连接器的多个引脚发送或接收替代模式的信号。