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1. 发明授权

US09438453B2 Method and circuit for establishing network connection 有权
公开(公告)号：US09438453B2
公开(公告)日：2016-09-06
申请号：US14812233
申请日：2015-07-29
申请人： REALTEK SEMICONDUCTOR CORPORATION
发明人： Sheng-Fu Chuang , Liang-Wei Huang , Ching-Yao Su , Hsuan-Ting Ho
IPC分类号： H04L25/49 , H04L29/08
CPC分类号： H04L25/4919 , H04L67/12
摘要： The present invention discloses a network connection establishing method capable of preventing a link procedure from being strangled in a training state. An embodiment of the method comprises: a preceding step; a training step; and a following step. Said training step includes at least one of the following: counting a number, and returning to the preceding step if a local receiver is not yet ready after finishing counting the number; detecting a reception signal according to a signal detection level, and returning to the preceding step when none of the reception signal is detected; determining a number of level(s) of the reception signal, and returning to the preceding step if the number of level(s) is less than an expected level number; and comparing a signal-to-noise ratio of the reception signal with a signal-to-noise threshold, and returning to the preceding step when the signal-to-noise ratio fails to satisfy the signal-to-noise threshold.

2. 发明授权

US09973235B2 Signal receiving device for Ethernet and control method thereof 有权
公开(公告)号：US09973235B2
公开(公告)日：2018-05-15
申请号：US14799023
申请日：2015-07-14
申请人： REALTEK SEMICONDUCTOR CORPORATION
发明人： Sheng-Fu Chuang , Liang-Wei Huang , Ching-Yao Su , Hsuan-Ting Ho
IPC分类号： H04B3/32 , H04L25/03
CPC分类号： H04B3/32 , H04L25/03057
摘要： This invention discloses a signal receiving device for Ethernet and a control method thereof. The signal receiving device includes a gain control circuit, an alien near-end crosstalk canceller, a noise canceller, and a DFE. The gain control circuit adjusts an input signal of the signal receiving device according to a setting parameter. The alien near-end crosstalk canceller cancels an alien near-end crosstalk interference. The noise canceller uses a first filter to cancel noises. The DFE uses a second filter to cancel an inter-symbol interference of the input signal. The method includes steps of: temporarily stopping the gain control circuit from updating the setting parameter before a seed collision occurs, and temporarily stopping one of the noise canceller and the decision feedback canceller from updating the first filter coefficient of the first filter or the second filter coefficient of the second filter temporarily during the seed collision.

3. 发明申请

US20150185278A1 Temperature insensitive testing device and method 有权
标题翻译：温度不敏感的测试装置和方法
公开(公告)号：US20150185278A1
公开(公告)日：2015-07-02
申请号：US14531612
申请日：2014-11-03
申请人： REALTEK SEMICONDUCTOR CORPORATION
发明人： Ching-Yao Su , Liang-Wei Huang , Shih-Wei Wang , Sheng-Fu Chuang
IPC分类号： G01R31/28
CPC分类号： G01R31/2837 , G01R31/2841 , H04L1/243
摘要： The present invention discloses a temperature insensitive testing device comprising: a transmission-end test sequence generating circuit to generate a test sequence; a transmission circuit to process the test sequence according to a transmission clock and thereby generate a test signal; a reception circuit to process an echo of the test signal and generate a digital echo signal; a correlation-value generating circuit to generate correlation values including a maximum correlation value according to the test sequence and the digital echo signal; and a decision circuit to determine whether a relation between the maximum correlation value and at least one threshold satisfies a predetermined condition and thereby generate a decision result, wherein the frequency of the transmission clock is lower than a predetermined frequency which confines the variation of the maximum correlation value to a predetermined range provided that the temperature variation of the transmission cable is within a temperature variation range.
摘要翻译：本发明公开了一种温度不敏感测试装置，包括：发送端测试序列产生电路，用于产生测试序列; 传输电路，用于根据传输时钟处理测试序列，从而产生测试信号; 接收电路，用于处理测试信号的回波并产生数字回波信号; 相关值产生电路，用于产生包括根据测试序列和数字回声信号的最大相关值的相关值; 以及确定所述最大相关值和至少一个阈值之间的关系是否满足预定条件并由此产生判定结果的判定电路，其中所述传输时钟的频率低于限制所述最大相关值的最大值的变化的预定频率相关值为预定范围，前提是传输电缆的温度变化在温度变化范围内。

4. 发明授权

US08964917B2 Signal transmission device performing compensation by filtering characteristics and method thereof, and signal reception device offsetting compensation and method thereof 有权
标题翻译：信号传输装置通过滤波特性及其方法进行补偿，以及信号接收装置的补偿补偿及其方法
公开(公告)号：US08964917B2
公开(公告)日：2015-02-24
申请号：US14102083
申请日：2013-12-10
申请人： Realtek Semiconductor Corporation
发明人： Sheng-Fu Chuang , Liang-Wei Huang , Ching-Yao Su , Chun-Hung Liu , Hsuan-Ting Ho , Cheng-Han Lee
IPC分类号： H03K7/02 , H03K9/02 , H04L25/497 , H04L25/03 , H04L25/49
CPC分类号： H04L25/4975 , H04L25/03019 , H04L25/4917
摘要： The present invention discloses a signal transmission device performing compensation by filtering characteristics for generating a transmission signal according to a pulse amplitude modulation signal. The signal transmission device comprises: a filtering characteristic compensation circuit for generating a compensation signal according to the pulse amplitude modulation signal and a filtering function; a filter coupled to the filtering characteristic compensation circuit for generating a filtered signal through filtering the compensation signal according to the aforementioned filtering function; and an analog front-end circuit for generating the transmission signal according to the filtered signal.
摘要翻译：本发明公开了一种信号传输装置，根据脉冲幅度调制信号，通过滤波特性进行补偿，以生成发送信号。信号传输装置包括：滤波特性补偿电路，用于根据脉冲幅度调制信号和滤波函数产生补偿信号; 滤波器，耦合到滤波特性补偿电路，用于根据上述滤波函数对补偿信号进行滤波来产生滤波信号; 以及用于根据滤波信号产生发送信号的模拟前端电路。

5. 发明申请

US20150052181A1 PARAMETER GENERATING DEVICE AND METHOD 有权
标题翻译：参数生成装置和方法
公开(公告)号：US20150052181A1
公开(公告)日：2015-02-19
申请号：US14323411
申请日：2014-07-03
申请人： REALTEK SEMICONDUCTOR CORPORATION
发明人： Ching-Yao Su , Liang-Wei Huang , Shih-Wei Wang , Wan-Chun Huang
IPC分类号： G06F7/50
CPC分类号： G06F17/10
摘要： The present invention discloses a parameter generating device and the method thereof to generate a parameter for circuit operation in which the parameter corresponds to an N degree polynomial of a characteristic curve while said N is a positive integer. The parameter generating device comprises: a storage circuit to store at least N+1 initial values that are determined by a start value and a unit variation amount; and an parameter calculating circuit, coupled to the storage circuit, to carry out addition calculation for at least [(K−1)×N+1] time(s) if a multiple K is positive or subtraction calculation for at least −K×N time(s) if the multiple K is negative, so as to generate the aforementioned parameter, wherein the multiple K is derived from a difference divided by the unit variation amount while the difference is a current value minus the start value.
摘要翻译：本发明公开了一种参数产生装置及其产生用于电路操作的参数的方法，其中参数对应于特性曲线的N度多项式，而所述N是正整数。参数产生装置包括：存储电路，用于存储由起始值和单位变化量确定的至少N + 1个初始值; 以及耦合到存储电路的参数计算电路，如果多个K是至少-K×的正或减计算，则至少执行[（K-1）×N + 1]个时间的加法运算如果多个K为负，则产生N个时间，从而产生上述参数，其中多个K是根据除以单位变化量的差导出的，而该差是当前值减去起始值。

6. 发明授权

US11630503B2 Methods for multidrop network system 有权
公开(公告)号：US11630503B2
公开(公告)日：2023-04-18
申请号：US17462182
申请日：2021-08-31
申请人： Realtek Semiconductor Corporation
发明人： Ching-Yao Su , Yung-Le Chang , Yuan-Jih Chu , Ming-Jhe Du
IPC分类号： G06F1/32 , G06F1/3287 , G06F1/3206
摘要： A method for a multidrop network system is provided. The method includes the following steps: transmitting, by a first node, a sleep request message to a second node; and determining, by the first node, whether to enter a sleep state from a wakeup state according to the condition in which the second node transmits a sleep acknowledge message in response to the sleep request message.

7. 发明授权

US09471542B2 Parameter generating device and method 有权
标题翻译：参数生成装置及方法
公开(公告)号：US09471542B2
公开(公告)日：2016-10-18
申请号：US14323411
申请日：2014-07-03
申请人： REALTEK SEMICONDUCTOR CORPORATION
发明人： Ching-Yao Su , Liang-Wei Huang , Shih-Wei Wang , Wan-Chun Huang
IPC分类号： G06F17/10 , G06F7/50 , G06F17/13 , G06F7/64
CPC分类号： G06F17/10
摘要： The present invention discloses a parameter generating device and the method thereof to generate a parameter for circuit operation in which the parameter corresponds to an N degree polynomial of a characteristic curve while said N is a positive integer. The parameter generating device comprises: a storage circuit to store at least N+1 initial values that are determined by a start value and a unit variation amount; and a parameter calculating circuit, coupled to the storage circuit, to carry out addition calculation for at least [(K−1)×N+1] time(s) if a multiple K is positive or subtraction calculation for at least −K×N time(s) if the multiple K is negative, so as to generate the aforementioned parameter, wherein the multiple K is derived from a difference divided by the unit variation amount while the difference is a current value minus the start value.
摘要翻译：本发明公开了一种参数产生装置及其产生用于电路操作的参数的方法，其中参数对应于特性曲线的N度多项式，而所述N是正整数。参数产生装置包括：存储电路，用于存储由起始值和单位变化量确定的至少N + 1个初始值; 以及耦合到存储电路的参数计算电路，如果多个K是至少-K×的正或减计算，则对至少[（K-1）×N + 1]个时间（s）进行加法运算如果多个K为负，则产生N个时间，从而产生上述参数，其中多个K是根据除以单位变化量的差导出的，而该差是当前值减去起始值。

8. 发明申请

US20140177698A1 Signal transmission device performing compensation by filtering characteristics and method thereof, and signal reception device offsetting compensation and method thereof 有权
标题翻译：信号传输装置通过滤波特性及其方法进行补偿，以及信号接收装置的补偿补偿及其方法
公开(公告)号：US20140177698A1
公开(公告)日：2014-06-26
申请号：US14102083
申请日：2013-12-10
申请人： REALTEK SEMICONDUCTOR CORPORATION
发明人： Sheng-Fu Chuang , Liang-Wei Huang , Ching-Yao Su , Chun-Hung Liu , Hsuan-Ting Ho , Cheng-Han Lee
IPC分类号： H04L25/08 , H04L25/03 , H04L25/497
CPC分类号： H04L25/4975 , H04L25/03019 , H04L25/4917
摘要： The present invention discloses a signal transmission device performing compensation by filtering characteristics for generating a transmission signal according to a pulse amplitude modulation signal. The signal transmission device comprises: a filtering characteristic compensation circuit for generating a compensation signal according to the pulse amplitude modulation signal and a filtering function; a filter coupled to the filtering characteristic compensation circuit for generating a filtered signal through filtering the compensation signal according to the aforementioned filtering function; and an analog front-end circuit for generating the transmission signal according to the filtered signal.
摘要翻译：本发明公开了一种信号传输装置，根据脉冲幅度调制信号，通过滤波特性进行补偿，以生成发送信号。信号传输装置包括：滤波特性补偿电路，用于根据脉冲幅度调制信号和滤波函数产生补偿信号; 滤波器，耦合到滤波特性补偿电路，用于根据上述滤波函数对补偿信号进行滤波来产生滤波信号; 以及用于根据滤波信号产生发送信号的模拟前端电路。

9. 发明授权

US09678146B2 Temperature insensitive testing device and method 有权
公开(公告)号：US09678146B2
公开(公告)日：2017-06-13
申请号：US14531612
申请日：2014-11-03
申请人： REALTEK SEMICONDUCTOR CORPORATION
发明人： Ching-Yao Su , Liang-Wei Huang , Shih-Wei Wang , Sheng-Fu Chuang
IPC分类号： G01R31/28 , H04L1/24
CPC分类号： G01R31/2837 , G01R31/2841 , H04L1/243
摘要： The present invention discloses a temperature insensitive testing device comprising: a transmission-end test sequence generating circuit to generate a test sequence; a transmission circuit to process the test sequence according to a transmission clock and thereby generate a test signal; a reception circuit to process an echo of the test signal and generate a digital echo signal; a correlation-value generating circuit to generate correlation values including a maximum correlation value according to the test sequence and the digital echo signal; and a decision circuit to determine whether a relation between the maximum correlation value and at least one threshold satisfies a predetermined condition and thereby generate a decision result, wherein the frequency of the transmission clock is lower than a predetermined frequency which confines the variation of the maximum correlation value to a predetermined range provided that the temperature variation of the transmission cable is within a temperature variation range.

10. 发明授权

US09001937B2 Signal level decision device and method 有权
标题翻译：信号电平决策装置及方法
公开(公告)号：US09001937B2
公开(公告)日：2015-04-07
申请号：US14184594
申请日：2014-02-19
申请人： Realtek Semiconductor Corporation
发明人： Sheng-Fu Chuang , Liang-Wei Huang , Hsuan-Ting Ho , Ching-Yao Su
IPC分类号： H04L27/06 , H04L27/08 , H04L25/03
CPC分类号： H04L27/08 , H04L25/03828
摘要： The present invention discloses a signal level decision device to determine the level of a source signal. Said source signal comprises a plurality of source messages along a time axis; each source message corresponds to one of a plurality of normal levels; and each normal level is equivalent to at least one of a plurality of extension levels. The signal decision device comprises: a storage circuit to store the level information of the normal level(s) and the equivalent extension level(s) thereof in connection with some or all of the source messages; a transition parameter calculation circuit to calculate a plurality of transition parameters of the normal level and its equivalent extension level(s) in connection with each of the source messages according to the level information; and a decision circuit to determine the level of each of the source messages according to the plurality of transition parameters.
摘要翻译：本发明公开了一种用于确定源信号电平的信号电平判定装置。所述源信号包括沿着时间轴的多个源消息; 每个源消息对应于多个正常级中的一个; 并且每个正常级别等同于多个扩展级别中的至少一个。信号判定装置包括：存储电路，用于存储与某些或所有源消息相关的正常级别的级别信息及其等效扩展级别; 转换参数计算电路，根据电平信息，计算与每个源消息相关联的正常电平及其等效扩展电平的多个转换参数; 以及判定电路，用于根据多个转换参数来确定每个源消息的级别。

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