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61. 发明授权

US08126079B1 High-speed serial data signal interface circuitry with multi-data-rate switching capability 有权
标题翻译：具有多数据速率切换功能的高速串行数据信号接口电路
公开(公告)号：US08126079B1
公开(公告)日：2012-02-28
申请号：US11824862
申请日：2007-07-03
申请人： Thungoc M. Tran , Sergey Shumarayev , Tim Tri Hoang , Weiqi Ding , Wilson Wong , Allen Chan
发明人： Thungoc M. Tran , Sergey Shumarayev , Tim Tri Hoang , Weiqi Ding , Wilson Wong , Allen Chan
IPC分类号： H04L27/00
CPC分类号： H04L7/033 , H03L7/22 , H04L7/0008
摘要： High-speed serial data signal transmitter and/or receiver circuitry is able to dynamically switch between handling data at two (or more) different data rates. Such a switch can be made very rapidly and with no requirement for reprogramming or reconfiguring the circuitry. Circuitry for glitchlessly switching between clock signals having different frequencies is also provided and may be used in the above-mentioned transmitter and/or receiver circuitry.
摘要翻译：高速串行数据信号发射机和/或接收机电路能够以两种（或多种）不同的数据速率在处理数据之间动态切换。这样的开关可以非常快速地进行，并且不需要重新编程或重新配置电路。还提供了用于在具有不同频率的时钟信号之间无差错地切换的电路，并且可以在上述发射机和/或接收机电路中使用。

62. 发明授权

US07977984B1 High-speed charge pump circuits 有权
标题翻译：高速电荷泵电路
公开(公告)号：US07977984B1
公开(公告)日：2011-07-12
申请号：US11871994
申请日：2007-10-13
申请人： Lewelyn Mark D'Souza , Weiqi Ding
发明人： Lewelyn Mark D'Souza , Weiqi Ding
IPC分类号： H03L7/06
CPC分类号： H03L7/0807 , H03L7/0816 , H03L7/0896
摘要： A charge pump circuit includes at least one switching transistor and a level-shifter. The level-shifter has a cross-coupled pair of transistors. The level-shifter shifts a voltage of a first input signal to generate a level-shifted signal. The level-shifted signal controls a conductive state of the switching transistor to regulate an output voltage of the charge pump. A feedback loop circuit includes a detector and a charge pump. The detector compares an input signal to a feedback signal to generate first and second output signals. The charge pump includes at least two thin-oxide switching transistors and a level-shifter in another embodiment. The level-shifter shifts a voltage of the first output signal of the detector to generate a level-shifted signal. The two switching transistors are driven by the level-shifted signal and the second output signal of the detector to regulate an output voltage of the charge pump.
摘要翻译：电荷泵电路包括至少一个开关晶体管和电平转换器。电平移位器具有交叉耦合的晶体管对。电平移位器移位第一输入信号的电压以产生电平移位信号。电平移位信号控制开关晶体管的导通状态以调节电荷泵的输出电压。反馈回路电路包括检测器和电荷泵。检测器将输入信号与反馈信号进行比较，以产生第一和第二输出信号。电荷泵在另一实施例中包括至少两个薄氧化物开关晶体管和电平转换器。电平移位器移动检测器的第一输出信号的电压以产生电平移位信号。两个开关晶体管由电平移位信号和检测器的第二输出信号驱动，以调节电荷泵的输出电压。

63. 发明授权

US07899649B1 Signal detect for high-speed serial interface 有权
标题翻译：信号检测用于高速串行接口
公开(公告)号：US07899649B1
公开(公告)日：2011-03-01
申请号：US12053884
申请日：2008-03-24
申请人： Wilson Wong , Allen Chan , Sergey Shumarayev , Thungoc M. Tran , Tim Tri Hoang , Weiqi Ding
发明人： Wilson Wong , Allen Chan , Sergey Shumarayev , Thungoc M. Tran , Tim Tri Hoang , Weiqi Ding
IPC分类号： G06F19/00
CPC分类号： H03K5/19 , H03K19/1774 , H03K19/17744 , H03K19/1778
摘要： Signal detection circuitry for a serial interface oversamples the input—i.e., samples the input multiple times per clock cycle—so that the likelihood of missing a signal is reduced. Sampling may be done with a regenerative latch which has a large bandwidth and can latch a signal at high speed. The amplitude threshold for detection may be programmable, particularly in a programmable device. Thus, between the use of a regenerative latch which is likely to catch any signal that might be present, and the use of oversampling to avoid the problem of sampling at the wrong time, the likelihood of failing to detect a signal is greatly diminished. Logic, such as a state machine, may be used to determine whether the samples captured s do or do not represent a signal. That logic may be programmable, allowing a user to set various parameters for signal detection.
摘要翻译：串行接口的信号检测电路对输入进行过采样，即每个时钟周期对输入进行多次采样，从而减少信号丢失的可能性。可以使用具有大带宽的再生锁存器并且可以高速锁存信号来进行采样。用于检测的幅度阈值可以是可编程的，特别是在可编程器件中。因此，在可能捕获可能存在的任何信号的再生锁存器的使用之间以及使用过采样以避免在错误时间采样的问题，大大减少了不能检测信号的可能性。可以使用诸如状态机的逻辑来确定捕获的样本是否或不表示信号。该逻辑可以是可编程的，允许用户设置用于信号检测的各种参数。

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