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公开(公告)号：US09883227B1
公开(公告)日：2018-01-30
申请号：US15459376
申请日：2017-03-15
Applicant: MStar Semiconductor, Inc.
Inventor： Ching-Fu Lan , Ying-Chao Chou , Chih-Ching Chao , Huang-Hsiang Lin , Jung-Kuei Chang
IPC: H04N7/173 , H04N21/426 , H04N21/439 , H04N21/44 , H04N7/01
CPC classification number: H04N21/42607 , H04N7/01 , H04N21/439 , H04N21/44
Abstract: A television signal processing circuit includes an audio/video (AV) signal generating circuit, an intermediate frequency (IF) mixer, a first filter, a radio-frequency (RF) mixer, a second filter and a digital-to-analog converter (DAC). The AV signal generator generates a digital AV signal. The IF mixer converts the digital AV signal to an IF AV signal. The first filter filters the IF AV signal to generate a filtered IF AV signal. The RF mixer converts the filtered IF AV signal to an RF AV signal. The second filter filters the RF AV signal to generate a filtered RF AV signal. The DAC converts the filtered RF AV signal to an analog AV signal and transmits the analog AV signal to an antenna.
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公开(公告)号：US09148309B2
公开(公告)日：2015-09-29
申请号：US14174007
申请日：2014-02-06
Applicant: MStar Semiconductor, Inc.
Inventor： Chun-Chi Su , Ching-Fu Lan , Chun-Chieh Wang , Tai-Lai Tung , Tung-Sheng Lin
CPC classification number: H04L25/0204 , H04L25/0232
Abstract: An apparatus for estimating channel effects is provided. A receiving module receives first data and first reference information arriving in a first time period, second data and second reference data arriving in a second time period, and third data and third reference data arriving in a third time period. An estimation module estimates channel effects corresponding to the first and third data, and the first, second and third reference data, respectively. A coefficient calculation module performs a Wiener filter coefficient calculation on the channel effects corresponding to the first, second and third reference data to generate a set of time-domain interpolation coefficients. An interpolation module interpolates the channel effects corresponding to the first third data according to the set of time-domain interpolation coefficients to generate a channel effect corresponding to the second data.
Abstract translation: 提供了一种用于估计信道效应的装置。 接收模块接收在第一时间段到达的第一数据和第一参考信息，在第二时间段到达的第二数据和第二参考数据，以及在第三时间段到达的第三数据和第三参考数据。 估计模块分别估计与第一和第三数据以及第一，第二和第三参考数据相对应的信道效应。 系数计算模块对与第一，第二和第三参考数据相对应的信道效应执行维纳滤波系数计算，以生成一组时域插值系数。 内插模块根据时域插值系数的集合内插与第一第三数据对应的信道效应，以产生与第二数据相对应的信道效应。
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公开(公告)号：US09094178B2
公开(公告)日：2015-07-28
申请号：US14299507
申请日：2014-06-09
Applicant: MStar Semiconductor, Inc.
Inventor： Chih-Cheng Kuo , Ching-Fu Lan , Tai-Lai Tung
CPC classification number: H04L7/0079 , H04L7/0016 , H04L7/0054 , H04L7/0062 , H04L7/027 , H04L25/0212 , H04L27/2663 , H04L27/2671 , H04L27/2675 , H04L27/2695
Abstract: A correcting apparatus for timing recovery of a receiver is provided. The receiver includes a timing recovery module that outputs a first symbol and a second symbol. The correcting apparatus includes: a channel impulse response module, configured to generate a first set of peak times and a second set of peak times according to the first symbol and the second symbol, respectively; and a calculation module, configured to calculate a correction signal according to a relationship between the first and second sets of peak times and to send the correction signal to the timing recovery module.
Abstract translation: 提供了一种用于接收器的定时恢复的校正装置。 接收机包括输出第一符号和第二符号的定时恢复模块。 校正装置包括：信道脉冲响应模块，用于分别根据第一符号和第二符号生成第一组峰值时间和第二组峰值时间; 以及计算模块，被配置为根据所述第一和第二峰值时间之间的关系来计算校正信号，并将所述校正信号发送到所述定时恢复模块。
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4.发明授权公开(公告)号：US09042494B2
公开(公告)日：2015-05-26
申请号：US14200664
申请日：2014-03-07
Applicant: MStar Semiconductor, Inc.
Inventor： Ching-Fu Lan , Hsin-Chuan Kuo , Tung-Sheng Lin , Tai-Lai Tung
CPC classification number: H04L27/2656 , H04L25/067 , H04L27/2672 , H04L27/2675 , H04L27/3881
Abstract: A digital broadcasting receiving system is provided. A receiving module receives an M number of symbols each carrying an N number of subcarriers of a control signal. A converting module performs FFT on respective kth subcarriers of an ith symbol and an (i+1)th symbol to generate an (i, k)th converted value and an (i+1, k)th converted value. A demodulating module performs differential demodulation on the (i, k)th and (i+1, k)th converted values to generate an (i, k)th demodulation value. A combining module soft-combines the (i, 1)th demodulation value through the (i, N)th demodulation value to generate an ith prediction value corresponding to the ith symbol. A determining module identifies a synchronization segment in the control signal according to the 1st prediction value to the (M−1)th prediction value.
Abstract translation: 提供数字广播接收系统。 接收模块接收M个符号，每个符号携带N个控制信号的子载波。 A转换模块对第i个符号和第（i + 1）个符号的第k个子载波执行FFT，以产生（i，k）转换值和第（i + 1，k）个转换值。 解调模块对（i，k）和（i + 1，k）个转换值执行差分解调，以产生（i，k）解调值。 组合模块通过（i，N）解调值对（i，1）解调值进行软组合，生成与第i个符号对应的第i个预测值。 确定模块根据第一预测值到第（M-1）个预测值来识别控制信号中的同步段。
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公开(公告)号：US20140219403A1
公开(公告)日：2014-08-07
申请号：US14174007
申请日：2014-02-06
Applicant: MSTAR SEMICONDUCTOR, INC.
Inventor： Chun-Chi Su , Ching-Fu Lan , Chun-Chieh Wang , Tai-Lai Tung , Tung-Sheng Lin
IPC: H04L25/02
CPC classification number: H04L25/0204 , H04L25/0232
Abstract: An apparatus for estimating channel effects is provided. A receiving module receives first data and first reference information arriving in a first time period, second data and second reference data arriving in a second time period, and third data and third reference data arriving in a third time period. An estimation module estimates channel effects corresponding to the first and third data, and the first, second and third reference data, respectively. A coefficient calculation module performs a Wiener filter coefficient calculation on the channel effects corresponding to the first, second and third reference data to generate a set of time-domain interpolation coefficients. An interpolation module interpolates the channel effects corresponding to the first third data according to the set of time-domain interpolation coefficients to generate a channel effect corresponding to the second data.
Abstract translation: 提供了一种用于估计信道效应的装置。 接收模块接收在第一时间段到达的第一数据和第一参考信息，在第二时间段到达的第二数据和第二参考数据，以及在第三时间段到达的第三数据和第三参考数据。 估计模块分别估计与第一和第三数据以及第一，第二和第三参考数据相对应的信道效应。 系数计算模块对与第一，第二和第三参考数据相对应的信道效应执行维纳滤波系数计算，以生成一组时域插值系数。 内插模块根据时域插值系数的集合内插与第一第三数据对应的信道效应，以产生与第二数据相对应的信道效应。
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Patent Agency Ranking
6.发明申请公开(公告)号：US20140362963A1
公开(公告)日：2014-12-11
申请号：US14299507
申请日：2014-06-09
Applicant: MStar Semiconductor, Inc.
Inventor： Chih-Cheng Kuo , Ching-Fu Lan , Tai-Lai Tung
CPC classification number: H04L7/0079 , H04L7/0016 , H04L7/0054 , H04L7/0062 , H04L7/027 , H04L25/0212 , H04L27/2663 , H04L27/2671 , H04L27/2675 , H04L27/2695
Abstract: A correcting apparatus for timing recovery of a receiver is provided. The receiver includes a timing recovery module that outputs a first symbol and a second symbol. The correcting apparatus includes: a channel impulse response module, configured to generate a first set of peak times and a second set of peak times according to the first symbol and the second symbol, respectively; and a calculation module, configured to calculate a correction signal according to a relationship between the first and second sets of peak times and to send the correction signal to the timing recovery module.
Abstract translation: 提供了一种用于接收器的定时恢复的校正装置。 接收机包括输出第一符号和第二符号的定时恢复模块。 校正装置包括：信道脉冲响应模块，用于分别根据第一符号和第二符号生成第一组峰值时间和第二组峰值时间; 以及计算模块，被配置为根据所述第一和第二峰值时间之间的关系来计算校正信号，并将所述校正信号发送到所述定时恢复模块。
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7.发明申请公开(公告)号：US20140254652A1
公开(公告)日：2014-09-11
申请号：US14200664
申请日：2014-03-07
Applicant: MStar Semiconductor, Inc.
Inventor： Ching-Fu Lan , Hsin-Chuan Kuo , Tung-Sheng Lin , Tai-Lai Tung
IPC: H04L27/26
CPC classification number: H04L27/2656 , H04L25/067 , H04L27/2672 , H04L27/2675 , H04L27/3881
Abstract: A digital broadcasting receiving system is provided. A receiving module receives an M number of symbols each carrying an N number of subcarriers of a control signal. A converting module performs FFT on respective kth subcarriers of an ith symbol and an (i+1)th symbol to generate an (i, k)th converted value and an (i+1, k)th converted value. A demodulating module performs differential demodulation on the (i, k)th and (i+1, k)th converted values to generate an (i, k)th demodulation value. A combining module soft-combines the (i, 1)th demodulation value through the (i, N)th demodulation value to generate an ith prediction value corresponding to the ith symbol. A determining module identifies a synchronization segment in the control signal according to the 1st prediction value to the (M−1)th prediction value.
Abstract translation: 提供数字广播接收系统。 接收模块接收M个符号，每个符号携带N个控制信号的子载波。 A转换模块对第i个符号和第（i + 1）个符号的第k个子载波执行FFT，以产生（i，k）转换值和第（i + 1，k）个转换值。 解调模块对（i，k）和（i + 1，k）个转换值执行差分解调，以产生（i，k）解调值。 组合模块通过（i，N）解调值对（i，1）解调值进行软组合，生成与第i个符号对应的第i个预测值。 确定模块根据第一预测值到第（M-1）个预测值来识别控制信号中的同步段。
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8.发明申请Soft Demapper, Calculating System, and Method for Calibrating Soft Data of Multimedia Data Stream 有权软解映射器，计算系统和校准多媒体数据流软数据的方法公开(公告)号：US20140204997A1
公开(公告)日：2014-07-24
申请号：US14140847
申请日：2013-12-26
Applicant: MStar Semiconductor, Inc.
Inventor： YOU-TSAI JENG , Tai-Lai Tung , Tung-Sheng Lin , Ching-Fu Lan
CPC classification number: H04L25/067 , H04N5/455 , H04N21/4382
Abstract: By determining a scaling factor for scaling signals according to a signal having low bit error rates, and by adjusting soft data using the scaling factor, when soft data are simulated using the Gaussian Model having obvious errors with respect to reality, impacts of signals having low bit error rates are effectively amplified so that impacts of signals having high bit error rates are effectively reduced on the contrary. As a result, the obvious errors introduced by using the Gaussian Model and a low broadcast quality of digital television signals caused by said obvious errors can be neutralized.
Abstract translation: 通过根据具有低误码率的信号确定缩放信号的缩放因子，并且通过使用缩放因子调整软数据，当使用具有相对于现实的明显错误的高斯模型来模拟软数据时，具有低的信号的影响 有效地放大了误比特率，从而有效地降低了具有高误码率的信号的影响。 结果，可以消除使用高斯模型引入的明显误差和由所述明显错误引起的数字电视信号的低广播质量。
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公开(公告)号：US20180027277A1
公开(公告)日：2018-01-25
申请号：US15459376
申请日：2017-03-15
Applicant: MStar Semiconductor, Inc.
Inventor： Ching-Fu Lan , Ying-Chao Chou , Chih-Ching Chao , HUANG-HSIANG LIN , JUNG-KUEI CHANG
IPC: H04N21/426 , H04N21/44 , H04N21/439
CPC classification number: H04N21/42607 , H04N7/01 , H04N21/439 , H04N21/44
Abstract: A television signal processing circuit includes an audio/video (AV) signal generating circuit, an intermediate frequency (IF) mixer, a first filter, a radio-frequency (RF) mixer, a second filter and a digital-to-analog converter (DAC). The AV signal generator generates a digital AV signal. The IF mixer converts the digital AV signal to an IF AV signal. The first filter filters the IF AV signal to generate a filtered IF AV signal. The RF mixer converts the filtered IF AV signal to an RF AV signal. The second filter filters the RF AV signal to generate a filtered RF AV signal. The DAC converts the filtered RF AV signal to an analog AV signal and transmits the analog AV signal to an antenna.
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公开(公告)号：US09673935B2
公开(公告)日：2017-06-06
申请号：US14138408
申请日：2013-12-23
Applicant: MStar Semiconductor, Inc.
Inventor： You-Tsai Jeng , Tai-Lai Tung , Tung-Sheng Lin , Ching-Fu Lan
CPC classification number: H04L1/0071 , H04L1/0047
Abstract: By inserting a symbol start tag at a start of a data segment corresponding to each symbol of a multimedia data stream, and by inserting frame start tags at starts of different frames in a start data segment, data signals belonging to different channels can be precisely and rapidly classified and decoded when the multimedia data stream is performed with demodulation.
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