公开(公告)号：US20190149363A1

公开(公告)日：2019-05-16

申请号：US15969961

申请日：2018-05-03

申请人： MStar Semiconductor, Inc.

发明人： Tzu-Yi Yang ,  Ko-Yin Lai ,  Tai-Lai Tung

IPC分类号： H04L25/02 ,  H04J11/00

摘要： A channel estimation circuit includes a pilot buffer, an interference indication buffer and a channel information calculation circuit. The pilot buffer stores channel information of multiple pilot cells in multiple symbols. The interference indication buffer stores interference indication information, which indicates whether the multiple symbols are affected by interference. The channel information calculation circuit, coupled to the pilot buffer and the interference indication buffer, estimates, based on channel information of a part of the multiple pilot cells in the multiple symbols, channel information of a data cell in the multiple symbols according to the interference indication information. The part of the multiple pilot cells do not include pilot cells of any symbol affected by interference.

公开(公告)号：US10103760B1

公开(公告)日：2018-10-16

申请号：US15841402

申请日：2017-12-14

申请人： MStar Semiconductor, Inc.

发明人： Tzu-Yi Yang ,  Ko-Yin Lai ,  Tai-Lai Tung

IPC分类号： H04B3/46 ,  H04B1/10 ,  H04L27/26

摘要： A circuit applied to a display apparatus includes a front-end circuit, a conversion circuit and an impulsive interference detection circuit. The front-end circuit converts an analog input signal into a digital input signal. The conversion circuit, coupled to the front-end circuit, converts the digital input signal from a time domain to a frequency domain to generate a frequency-domain signal. The impulsive interference detection circuit, coupled to the conversion circuit, detects a noise intensity of the frequency-domain signal to generate a detection result, which is used to determine whether the analog input signal has impulsive interference.

公开(公告)号：US20170005737A1

公开(公告)日：2017-01-05

申请号：US15173973

申请日：2016-06-06

申请人： MStar Semiconductor, Inc.

发明人： Tzu-Yi Yang ,  Tai-Lai Tung

IPC分类号： H04B17/11

CPC分类号： H04B17/11 ,  H04L5/0007 ,  H04L27/0014 ,  H04L27/364 ,  H04L27/367 ,  H04L2027/0018

摘要： A mismatch compensating device includes: a signal generator, synchronously outputting first and second signal; a gain and phase compensator, processing the first and second signals according to a gain parameter and a phase parameter to generate compensated first and second signals; a DAC, performing a digital-to-analog conversion on the compensated first and second signals to generate first and second analog signals; an analog front-end circuit, processing the first and second analog signals to output a joint signal; a mismatch detecting circuit, detecting the power of the joint signal to generate a detection result; a frequency-dependent mismatch compensator, compensating at least one of the first and second signals; and a control circuit, setting the gain and phase parameters and a parameter of the frequency-dependent mismatch compensator according to the detection result to compensate frequency-independent gain and phase mismatch and a frequency-dependent mismatch response.

摘要翻译： 不对称补偿装置包括：信号发生器，同步输出第一和第二信号; 增益和相位补偿器，根据增益参数和相位参数处理第一和第二信号以产生补偿的第一和第二信号; DAC，对经补偿的第一和第二信号执行数模转换以产生第一和第二模拟信号; 模拟前端电路，处理第一和第二模拟信号以输出联合信号; 不匹配检测电路，检测联合信号的功率以产生检测结果; 频率相关失配补偿器，补偿第一和第二信号中的至少一个; 以及控制电路，根据检测结果设置增益和相位参数以及频率相关失配补偿器的参数，以补偿频率无关的增益和相位失配以及频率相关的不匹配响应。

公开(公告)号：US20160365971A1

公开(公告)日：2016-12-15

申请号：US15175121

申请日：2016-06-07

申请人： MStar Semiconductor, Inc.

发明人： Po-Hung Liu ,  Tzu-Yi Yang ,  Teng-Han Tsai ,  Tai-Lai Tung

IPC分类号： H04L7/033

CPC分类号： H04L27/3863 ,  H04L5/0092

摘要： A sampling phase difference compensation apparatus includes a signal generator, a signal analyzer and a compensator. The signal generator generates a first signal and a second signal, and outputs the first and second signals to a first path in a first time interval and a second path in a second time interval, respectively. The signal analyzer receives a transmitted first signal from the first path and a transmitted second signal from the second path, and performs a predetermined calculation on the transmitted first and second signals to determine a phase difference relationship, which is associated with a frequency-dependent phase difference and a sampling phase difference, between the transmitted first and second signals. The transmitted first signal is associated with the first signal, and the transmitted second signal is associated with the second signal. The compensator performs a phase difference compensation according to the phase difference relationship.

摘要翻译： 采样相位差补偿装置包括信号发生器，信号分析器和补偿器。 信号发生器产生第一信号和第二信号，并且分别在第一时间间隔和第二时间间隔中将第一和第二信号输出到第一路径和第二路径。 信号分析仪从第一路径接收所发送的第一信号和从第二路径发送的第二信号，并对发送的第一和第二信号执行预定的计算，以确定与频率相关相位相关的相位差关系 差异和采样相位差，在发送的第一和第二信号之间。 发送的第一信号与第一信号相关联，并且发送的第二信号与第二信号相关联。 补偿器根据相位差关系进行相位差补偿。

公开(公告)号：US20190199891A1

公开(公告)日：2019-06-27

申请号：US16132923

申请日：2018-09-17

申请人： MStar Semiconductor, Inc.

发明人： Tzu-Yi Yang ,  Ko-Yin Lai ,  TAI-LAI TUNG

IPC分类号： H04N5/21 ,  G09G3/20

CPC分类号： H04N5/21 ,  G09G3/2088

摘要： A circuit applied to a display apparatus includes a first noise variance estimation circuit, an impulsive interference determination circuit, a second noise variance circuit and a selection circuit. The first noise variance estimation circuit calculates a first noise variance of an input signal. The impulsive interference determination circuit determines whether the input signal has impulsive interference according to the first noise variance to generate a detection result. The second noise variance estimation circuit calculates a second noise variance based on the input signal. The selection circuit selectively outputs one of the first noise variance and the second noise variance according to the detection result.

公开(公告)号：US20190080638A1

公开(公告)日：2019-03-14

申请号：US15968792

申请日：2018-05-02

申请人： MStar Semiconductor, Inc.

发明人： Tzu-Yi Yang ,  Ko-Yin Lai ,  Tai-Lai Tung

IPC分类号： G09G3/00 ,  H04L25/08 ,  H04L25/03 ,  H04B17/336 ,  G09G3/20 ,  G06T3/40

摘要： A circuit applied to a display apparatus includes an analog-to-digital converter (ADC), a filter and impulsive interference detecting circuit. The ADC converts an analog input signal to a digital input signal. The filter filters out adjacent-channel interference (ACI) of the digital input signal to generate a filtered digital input signal. The impulsive interference detecting circuit detects a noise intensity of a part of a frequency range of the filtered digital input signal to generate a detection result. The part of the frequency range is smaller than a frequency band of the filter, and the detection result is used to determine whether the analog input signal has impulsive interference.

公开(公告)号：US20180302112A1

公开(公告)日：2018-10-18

申请号：US15841402

申请日：2017-12-14

申请人： MStar Semiconductor, Inc.

发明人： Tzu-Yi Yang ,  Ko-Yin Lai ,  Tai-Lai Tung

IPC分类号： H04B1/10 ,  H04L27/26

摘要： A circuit applied to a display apparatus includes a front-end circuit, a conversion circuit and an impulsive interference detection circuit. The front-end circuit converts an analog input signal into a digital input signal. The conversion circuit, coupled to the front-end circuit, converts the digital input signal from a time domain to a frequency domain to generate a frequency-domain signal. The impulsive interference detection circuit, coupled to the conversion circuit, detects a noise intensity of the frequency-domain signal to generate a detection result, which is used to determine whether the analog input signal has impulsive interference.

公开(公告)号：US09813282B2

公开(公告)日：2017-11-07

申请号：US15175121

申请日：2016-06-07

申请人： MStar Semiconductor, Inc.

发明人： Po-Hung Liu ,  Tzu-Yi Yang ,  Teng-Han Tsai ,  Tai-Lai Tung

IPC分类号： H04L7/00 ,  H04L27/38

CPC分类号： H04L27/3863 ,  H04L5/0092

摘要： A sampling phase difference compensation apparatus includes a signal generator, a signal analyzer and a compensator. The signal generator generates a first signal and a second signal, and outputs the first and second signals to a first path in a first time interval and a second path in a second time interval, respectively. The signal analyzer receives a transmitted first signal from the first path and a transmitted second signal from the second path, and performs a predetermined calculation on the transmitted first and second signals to determine a phase difference relationship, which is associated with a frequency-dependent phase difference and a sampling phase difference, between the transmitted first and second signals. The transmitted first signal is associated with the first signal, and the transmitted second signal is associated with the second signal. The compensator performs a phase difference compensation according to the phase difference relationship.

公开(公告)号：US09564979B2

公开(公告)日：2017-02-07

申请号：US15173973

申请日：2016-06-06

申请人： MStar Semiconductor, Inc.

发明人： Tzu-Yi Yang ,  Tai-Lai Tung

IPC分类号： H04B17/11

CPC分类号： H04B17/11 ,  H04L5/0007 ,  H04L27/0014 ,  H04L27/364 ,  H04L27/367 ,  H04L2027/0018

摘要： A mismatch compensating device includes: a signal generator, synchronously outputting first and second signal; a gain and phase compensator, processing the first and second signals according to a gain parameter and a phase parameter to generate compensated first and second signals; a DAC, performing a digital-to-analog conversion on the compensated first and second signals to generate first and second analog signals; an analog front-end circuit, processing the first and second analog signals to output a joint signal; a mismatch detecting circuit, detecting the power of the joint signal to generate a detection result; a frequency-dependent mismatch compensator, compensating at least one of the first and second signals; and a control circuit, setting the gain and phase parameters and a parameter of the frequency-dependent mismatch compensator according to the detection result to compensate frequency-independent gain and phase mismatch and a frequency-dependent mismatch response.

摘要翻译： 不对称补偿装置包括：信号发生器，同步输出第一和第二信号; 增益和相位补偿器，根据增益参数和相位参数处理第一和第二信号以产生补偿的第一和第二信号; DAC，对经补偿的第一和第二信号执行数模转换以产生第一和第二模拟信号; 模拟前端电路，处理第一和第二模拟信号以输出联合信号; 不匹配检测电路，检测联合信号的功率以产生检测结果; 频率相关失配补偿器，补偿第一和第二信号中的至少一个; 以及控制电路，根据检测结果设置增益和相位参数以及频率相关失配补偿器的参数，以补偿频率无关的增益和相位失配以及频率相关的不匹配响应。

公开(公告)号：US20190082081A1

公开(公告)日：2019-03-14

申请号：US15842071

申请日：2017-12-14

申请人： MStar Semiconductor, Inc.

发明人： Tzu-Yi Yang ,  Ko-Yin Lai ,  Tai-Lai Tung

IPC分类号： H04N5/213 ,  H04N5/44

摘要： A circuit applied to a receiver in a display apparatus includes a noise detecting circuit and a threshold determining circuit. The noise detecting circuit detects noise of a received signal to generate a plurality of noise intensity values. The threshold determining circuit determines a threshold according to the plurality of noise intensity values to accordingly determine whether the received signal has impulsive interference. The noise determining circuit includes a sorting circuit and a selecting circuit. The sorting circuit sorts an order of the plurality of noise intensity values. The selecting circuit selects, from the plurality of noise intensity values, the Mth noise intensity value as a predetermined noise intensity value. The threshold determining circuit determines the threshold according to the predetermined noise intensity value.