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1. 发明授权

US10298944B2 Decoding circuit applied to multimedia apparatus and associated decoding method 有权
公开(公告)号：US10298944B2
公开(公告)日：2019-05-21
申请号：US15841624
申请日：2017-12-14
申请人： MStar Semiconductor, Inc.
发明人： Kuan-Chou Lee , Kai-Wen Cheng , Tai-Lai Tung
IPC分类号： H03M7/00 , H04N19/44 , H03M13/00 , H04H40/90 , H04N5/455 , H04N21/40
摘要： A decoding circuit applied to a multimedia apparatus is provided. The decoding circuit is for decoding encoded data to generate system information, and includes multiple processing circuits and a determination circuit. The multiple processing circuits individually process the encoded data to generate multiple processed signals, and respectively correspond to multiple bit combinations of a part of the system information. The determination circuit determines the system information according to the multiple processed signals.

2. 发明授权

US10263813B1 Signal receiving apparatus and signal processing method thereof 有权
公开(公告)号：US10263813B1
公开(公告)日：2019-04-16
申请号：US15988110
申请日：2018-05-24
申请人： MStar Semiconductor, Inc.
发明人： Chia-Chun Hung , Ting-Nan Cho , Kai-Wen Cheng , Tai-Lai Tung
IPC分类号： H04L25/03 , H04L27/00
摘要： A signal receiving apparatus includes a phase recovery look, a phase estimation circuit, a phase noise detection circuit, and a bandwidth setting circuit. The phase recovery loop performs a phase recovery process on an input signal according to a bandwidth setting. The phase estimation circuit generates an estimated phase associated with the input signal. The phase noise detection circuit determines a phase noise amount according to the estimated phase. The bandwidth setting circuit calculates an average and a variance of the phase noise amounts, and adjusts the bandwidth setting of the phase recovery loop according to the average and the variance.

3. 发明授权

US10090937B2 Apparatus and method for eliminating impulse interference 有权
公开(公告)号：US10090937B2
公开(公告)日：2018-10-02
申请号：US14941795
申请日：2015-11-16
申请人： MStar Semiconductor, Inc.
发明人： You-Tsai Jeng , Fang-Ming Yang , Kuo-Yu Lee , Keng-Lon Lei , Tai-Lai Tung
IPC分类号： H04B15/00 , H04L1/00 , H04L1/20
摘要： An apparatus for eliminating impulse interference includes an impulse interference detecting unit, an impulse interference eliminating unit and a control unit. The impulse interference detecting unit detects whether impulse interference exists in an input signal according to a predetermined condition, and generates an impulse interference eliminating request when having detected that the input signal satisfies the predetermined condition. In response to the impulse interference eliminating request, the impulse interference eliminating unit performs an impulse interference eliminating process on the input signal to generate an output signal. According to an output signal quality index associated with the output signal, the control unit selectively adjusts the predetermined condition used for detecting whether the impulse interference exists.

4. 发明授权

US10075667B2 Signal receiving end of digital television and signal processing method thereof 有权
公开(公告)号：US10075667B2
公开(公告)日：2018-09-11
申请号：US15380055
申请日：2016-12-15
申请人： MStar Semiconductor, Inc.
发明人： You-Tsai Jeng , Tai-Lai Tung , keng-Lon Lei , Kuo-Yu Lee
IPC分类号： H04N5/52 , H03G3/30 , H04N5/21 , H04R3/04 , H04R3/00
CPC分类号： H04N5/52 , H03G3/3005 , H03G3/3089 , H04N5/21 , H04R3/00 , H04R3/04 , H04R2430/01 , H04R2499/15
摘要： A signal receiving end of a digital television includes: an analog-to-digital converter (ADC), converting an input signal from an analog format to a digital format, the input signal including a target signal and an interference signal; a digital gain control circuit, coupled to the ADC, adjusting an amplitude of the target signal according to a gain; a detecting module, coupled to the digital gain control circuit, detecting a variance in the gain to generate a detection value; and a control circuit, coupled to the digital gain control circuit, determining a gain setting parameter according to the detection value. Wherein, the digital gain control circuit further updates the gain according to the gain setting parameter.

5. 发明授权

US10075306B2 Echo detection circuit and method for multi-carrier system 有权
公开(公告)号：US10075306B2
公开(公告)日：2018-09-11
申请号：US15435592
申请日：2017-02-17
申请人： MStar Semiconductor, Inc.
发明人： Kun-Yu Wang , Ko-Yin Lai , Tai-Lai Tung
IPC分类号： H04L27/26 , H04L25/02
CPC分类号： H04L27/2628 , H04J11/0063 , H04L25/0212 , H04L25/0216 , H04L25/0232 , H04L27/2647
摘要： An echo detection circuit for a multi-carrier system includes a memory, a threshold generating circuit and an echo determining circuit. The memory stores a plurality of channel impulse response values of the multi-channel system. The channel impulse response values include a target channel impulse response value, a plurality of preceding channel impulse response values and a plurality of subsequent channel impulse response values; a threshold generating circuit, coupled to the memory, generating a threshold corresponding to the target channel impulse response according to the preceding channel impulse response values and the subsequent channel impulse response values; and an echo determining circuit, coupled to the threshold generating circuit and the memory, comparing the target channel impulse response value with the threshold to determine whether the target channel impulse response value corresponds to an echo path of the multi-carrier system.

6. 发明授权

US10028157B2 Device and method for handling bit allocation 有权
公开(公告)号：US10028157B2
公开(公告)日：2018-07-17
申请号：US15016406
申请日：2016-02-05
申请人： MStar Semiconductor, Inc.
发明人： Yu-Che Su , Tai-Lai Tung
IPC分类号： H04L12/26 , H04W24/08 , H04W72/08 , H04L5/00
摘要： A bit allocation device includes: a channel estimation unit, performing a channel estimation to generate a plurality of channel qualities of a plurality of subcarriers; a processing unit, coupled to the channel estimation unit, generating a first plurality of bit numbers of the plurality of subcarriers according to the plurality of channel qualities; and a control unit, coupled to the processing unit, generating a second plurality of bit numbers of the plurality of subcarriers according to the first plurality of bit numbers and an upper limit of a total bit number.

7. 发明申请

US20170222836A1 DEVICE AND METHOD FOR HANDLING SEQUENCE ESTIMATION 审中-公开
公开(公告)号：US20170222836A1
公开(公告)日：2017-08-03
申请号：US15272729
申请日：2016-09-22
申请人： MStar Semiconductor, Inc.
发明人： Yi-Ying Liao , Tai-Lai Tung
IPC分类号： H04L25/03 , H04B1/16
CPC分类号： H04L25/03057 , H04B1/16 , H04L25/03318
摘要： A sequence estimation device includes: a soft decision processing unit, generating a plurality of input signals including soft information according to a plurality of first equalized signals, an equalizer weight and a plurality of estimation signals corresponding to the equalizer weight; and a decoding unit, coupled to the soft decision processing unit, decoding the plurality of input signals including the soft information according to a decoding rule to generate a plurality of output signals.

8. 发明授权

US09674012B2 Decision feedback equalizer and control method thereof 有权
公开(公告)号：US09674012B2
公开(公告)日：2017-06-06
申请号：US15017976
申请日：2016-02-08
申请人： MStar Semiconductor, Inc.
发明人： Ching-Wen Ma , Tai-Lai Tung
IPC分类号： H04L25/03
CPC分类号： H04L25/03267 , H04L25/0212 , H04L25/03133 , H04L25/03292
摘要： A control method for a decision feedback equalizer (DFE) includes: generating a channel impulse response (CIR) estimation vector according to an input signal at a CIR estimation frequency; generating an FFE coefficient according to the CIR estimation vector at a first frequency; generating an FBE coefficient according to the CIR estimation vector, and the FFE coefficient at a second frequency; generating a feed-forward equalization filtered result according to the input signal and the FFE coefficient; generating a feed-backward equalization filtered result according to a decision signal and the FBE coefficient; and generating an updated decision signal according to the feed-forward equalization filtered result and the feed-backward equalization filtered result. At least one of the first frequency and the second frequency is smaller than the CIR estimation frequency.

9. 发明授权

US09674005B1 Device and method for handling channel estimation 有权
公开(公告)号：US09674005B1
公开(公告)日：2017-06-06
申请号：US15084159
申请日：2016-03-29
申请人： MStar Semiconductor, Inc.
发明人： Cheng-Han Wu , Fong-Shih Wei , Chien-Chih Yu , Tai-Lai Tung
IPC分类号： H04L1/02 , H04L25/02 , H04B1/06
CPC分类号： H04L25/025 , H04B1/06 , H04L25/0222 , H04L25/0258
摘要： A communication device includes: a detecting unit, performing a mobility detection in a time interval to generate a detection result; a selecting unit, selecting a channel estimation method from a plurality of channel estimation methods according to the detection result; and a channel estimating unit, coupled to the selecting unit, performing a channel estimation on a channel for receiving a signal according to the selected channel estimation method.

10. 发明申请

US20170063473A1 APPARATUS AND METHOD FOR ELIMINATING IMPULSE INTERFERENCE 审中-公开
标题翻译：消除干扰的装置和方法
公开(公告)号：US20170063473A1
公开(公告)日：2017-03-02
申请号：US14941795
申请日：2015-11-16
申请人： MStar Semiconductor, Inc.
发明人： You-Tsai Jeng , Fang-Ming Yang , Kuo-Yu Lee , Keng-Lon Lei , Tai-Lai Tung
IPC分类号： H04B15/00 , H04L1/00 , H04L12/26
CPC分类号： H04B15/00 , H04L1/0047 , H04L1/0057 , H04L1/20
摘要： An apparatus for eliminating impulse interference includes an impulse interference detecting unit, an impulse interference eliminating unit and a control unit. The impulse interference detecting unit detects whether impulse interference exists in an input signal according to a predetermined condition, and generates an impulse interference eliminating request when having detected that the input signal satisfies the predetermined condition. In response to the impulse interference eliminating request, the impulse interference eliminating unit performs an impulse interference eliminating process on the input signal to generate an output signal. According to an output signal quality index associated with the output signal, the control unit selectively adjusts the predetermined condition used for detecting whether the impulse interference exists.
摘要翻译：用于消除脉冲干扰的装置包括脉冲干扰检测单元，脉冲干扰消除单元和控制单元。冲击干扰检测单元根据预定条件检测输入信号中是否存在脉冲干扰，并且在检测到输入信号满足预定条件时产生脉冲干扰消除请求。脉冲干扰消除单元响应脉冲干扰消除请求，对输入信号进行脉冲干扰消除处理，生成输出信号。根据与输出信号相关联的输出信号质量指标，控制单元选择性地调整用于检测是否存在脉冲干扰的预定条件。

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