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    • 1. 发明授权
    • Byte alignment for serial data receiver
    • 串行数据接收器的字节对齐
    • US07046174B1
    • 2006-05-16
    • US11147757
    • 2005-06-07
    • Henry Y. LuiChong H. LeeRakesh PatelRamanand VenkataJohn LamVinson ChanMalik Kabani
    • Henry Y. LuiChong H. LeeRakesh PatelRamanand VenkataJohn LamVinson ChanMalik Kabani
    • H03M9/00
    • H03M9/00H03K5/135H04L7/0331
    • A serial data interface for a programmable logic device includes a receiver that deserializes a plurality of channels of received serial data using a recovered clock signal or a phase-aligned received clock signal. Byte boundaries are initially assigned, perhaps arbitrarily, and the deserialized signal is sent to the programmable logic core of the programmable logic device. Programmable logic in the core monitors the byte boundaries on each channel based on the criteria, including any user-defined parameters, programmed into the logic. If a boundary misalignment is detected, a signal is send from the core to bit-slipping circuitry on that channel of the interface to adjust the boundary. The signal could instruct the bit-slipping circuitry to adjust the boundary by the number of bits needed to correct the alignment. Alternatively, the bit-slipping circuitry could operate iteratively, adjusting the boundary by one bit, each cycle, until the signal stops indicating misalignment.
    • 用于可编程逻辑器件的串行数据接口包括使用恢复的时钟信号或相位对准的接收时钟信号对接收的串行数据的多个信道反串行的接收器。 字节边界最初可以任意分配,反序列化信号被发送到可编程逻辑器件的可编程逻辑核心。 内核中的可编程逻辑基于标准(包括任何用户定义的参数)来监视每个通道上的字节边界,编程到逻辑中。 如果检测到边界未对准,则在该接口的该通道上将信号从核心发送到位滑动电路以调整边界。 信号可以指示位滑动电路将边界调整校正对准所需的位数。 或者,位打滑电路可以迭代地操作,每个周期将边界调整一个位,直到信号停止指示未对准。
    • 2. 发明授权
    • Byte alignment for serial data receiver
    • 串行数据接收器的字节对齐
    • US06724328B1
    • 2004-04-20
    • US10454626
    • 2003-06-03
    • Henry Y. LuiChong H. LeeRakesh PatelRamanand VenkataJohn LamVinson ChanMalik Kabani
    • Henry Y. LuiChong H. LeeRakesh PatelRamanand VenkataJohn LamVinson ChanMalik Kabani
    • H03M900
    • H04L7/0054H03M9/00
    • A serial data interface for a programmable logic device includes a receiver that deserializes a plurality of channels of received serial data using a recovered clock signal or a phase-aligned received clock signal. Byte boundaries are initially assigned, perhaps arbitrarily, and the deserialized signal is sent to the programmable logic core of the programmable logic device. Programmable logic in the core monitors the byte boundaries on each channel based on the criteria, including any user-defined parameters, programmed into the logic. If a boundary misalignment is detected, a signal is send from the core to bit-slipping circuitry on that channel of the interface to adjust the boundary. The signal could instruct the bit-slipping circuitry to adjust the boundary by the number of bits needed to correct the alignment. Alternatively, the bit-slipping circuitry could operate iteratively, adjusting the boundary by one bit, each cycle, until the signal stops indicating misalignment.
    • 用于可编程逻辑器件的串行数据接口包括使用恢复的时钟信号或相位对准的接收时钟信号对接收的串行数据的多个信道反串行的接收器。 字节边界最初可以任意分配,反序列化信号被发送到可编程逻辑器件的可编程逻辑核心。 内核中的可编程逻辑基于标准(包括任何用户定义的参数)来监视每个通道上的字节边界,编程到逻辑中。 如果检测到边界未对准,则在该接口的该通道上将信号从核心发送到位滑动电路以调整边界。 信号可以指示位滑动电路将边界调整校正对准所需的位数。 或者,位打滑电路可以迭代地操作,每个周期将边界调整一个位,直到信号停止指示未对准。
    • 3. 发明授权
    • Byte alignment for serial data receiver
    • 串行数据接收器的字节对齐
    • US06970117B1
    • 2005-11-29
    • US10789406
    • 2004-02-26
    • Henry Y. LuiChong H. LeeRakesh PatelRamanand VenkataJohn LamVinson ChanMalik Kabani
    • Henry Y. LuiChong H. LeeRakesh PatelRamanand VenkataJohn LamVinson ChanMalik Kabani
    • H03M9/00H04L7/02
    • H04L7/0054H03M9/00
    • A serial data interface for a programmable logic device includes a receiver that deserializes a plurality of channels of received serial data using a recovered clock signal or a phase-aligned received clock signal. Byte boundaries are initially assigned, perhaps arbitrarily, and the deserialized signal is sent to the programmable logic core of the programmable logic device. Programmable logic in the core monitors the byte boundaries on each channel based on the criteria, including any user-defined parameters, programmed into the logic. If a boundary misalignment is detected, a signal is send from the core to bit-slipping circuitry on that channel of the interface to adjust the boundary. The signal could instruct the bit-slipping circuitry to adjust the boundary by the number of bits needed to correct the alignment. Alternatively, the bit-slipping circuitry could operate iteratively, adjusting the boundary by one bit, each cycle, until the signal stops indicating misalignment.
    • 用于可编程逻辑器件的串行数据接口包括使用恢复的时钟信号或相位对准的接收时钟信号对接收的串行数据的多个信道反串行的接收器。 字节边界最初可以任意分配,反序列化信号被发送到可编程逻辑器件的可编程逻辑核心。 内核中的可编程逻辑基于标准(包括任何用户定义的参数)来监视每个通道上的字节边界,编程到逻辑中。 如果检测到边界未对准,则在该接口的该通道上将信号从核心发送到位滑动电路以调整边界。 信号可以指示位滑动电路将边界调整校正对准所需的位数。 或者,位打滑电路可以迭代地操作,每个周期将边界调整一个位,直到信号停止指示未对准。
    • 6. 发明授权
    • Data converter with multiple conversions for padded-protocol interface
    • 具有多个转换的数据转换器,用于填充协议接口
    • US07151470B1
    • 2006-12-19
    • US10969450
    • 2004-10-20
    • Ning XueRamanand VenkataChong H LeeRakesh Patel
    • Ning XueRamanand VenkataChong H LeeRakesh Patel
    • H03M7/00
    • H03M7/04
    • A data converter, or “gearbox,” for a padded protocol interface can perform a number of different conversions—e.g., between 64 and 66 bits, between 24 and 26 bits, or between 48 and 50 bits. This is accomplished by clocking the gearbox at different clock speeds, all derived from the same master clock (which may be recovered from the data in a receiver embodiment) using programmable dividers that allow the user to select the clock speed. When the conversion is not that one with the maximum width for which the gearbox is designed, unused bits are ignored. The converter can also find padding bits, for alignment purposes, in data of different widths, again ignoring unused bits when the data are not the widest for which the converter is designed.
    • 用于填充协议接口的数据转换器或“变速箱”可以执行多个不同的转换,例如在64位和66位之间,在24位和26位之间,或在48位和50位之间。 这是通过使用可允许用户选择时钟速度的可编程分频器从不同时钟速度对齿轮箱进行计时的,这些时钟速度全部来自相同的主时钟(可以从接收机实施例中的数据恢复)。 当转换不是设计齿轮箱的最大宽度的转换时,未使用的位将被忽略。 转换器还可以在不同宽度的数据中找到用于对齐目的的填充位,当数据不是设计转换器的最宽时,再次忽略未使用的位。
    • 7. 发明授权
    • Multiple data rates in programmable logic device serial interface
    • 可编程逻辑器件串行接口中的多个数据速率
    • US06888376B1
    • 2005-05-03
    • US10670845
    • 2003-09-24
    • Ramanand VenkataChong H. LeeRakesh Patel
    • Ramanand VenkataChong H. LeeRakesh Patel
    • H03K19/177
    • H03K19/17744H03K19/1778H03K19/17796
    • A serial interface for a programmable logic device supports a higher physical medium attachment (“PMA”) data rate than the available physical coding sublayer (“PCS”) data rate by using multiple PCS modules, operating in parallel, to support one PMA module. In a channel-based structure, the PMA module is supported by a PCS module in its own channel and at least one PCS module from a second channel. The second channel may include its own PMA module which, if provided, may operate at a lower rate, supportable by the PCS module in that channel. Optionally, two modes are provided. In one mode, two PCS modules in two channels support one higher-speed PMA module in one of the channels. In a second mode, each PCS module supports a PMA module in its own channel, with the higher-speed PMA module constrained to operate at the lower data rate of the PCS module.
    • 用于可编程逻辑器件的串行接口通过使用并行操作的多个PCS模块来支持比可用物理编码子层(“PCS”)数据速率更高的物理介质附加(“PMA”)数据速率,以支持一个PMA模块。 在基于通道的结构中,PMA模块由其自身通道中的PCS模块和来自第二通道的至少一个PCS模块支持。 第二通道可以包括其自己的PMA模块,如果提供的话,该模块可以以较低的速率操作,由PCS模块在该通道中支持。 可选地,提供两种模式。 在一种模式下,两个通道中的两个PCS模块在其中一个通道中支持一个更高速的PMA模块。 在第二种模式下,每个PCS模块都支持自己的通道中的PMA模块,而高速PMA模块则被限制在PCS模块的较低数据速率下工作。