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1. 发明授权

US09952828B2 WLAN player and WLAN system for synchronizing playing speed and method thereof 有权
公开(公告)号：US09952828B2
公开(公告)日：2018-04-24
申请号：US15291954
申请日：2016-10-12
申请人： ALi Corporation
发明人： Yue-Yong Chen
IPC分类号： G06F3/16 , H04W84/12
CPC分类号： G06F3/165 , G11B27/10 , H04W84/12
摘要： A WLAN player for synchronizing playing speed includes a speed adjusting module, which is adapted to adjust a speed that the WLAN player plays a medium according to a first playing-progress value and a first clock value of another WLAN player, so as to synchronously play the medium together with said another WLAN player. The WLAN player has a second playing-progress value and a second clock value. The speed adjusting module is configured to calculate a progress difference between the second playing-progress value and the first playing-progress value; calculate a time difference between the second clock value and the first clock value; calculate a specific progress difference according to the progress difference and the time difference; and adjust the speed that the WLAN player plays the medium according to the specific progress difference. In this way, a synchronization error between the WLAN players is effectively decreased.

2. 发明申请

US20170286054A1 WLAN PLAYER AND WLAN SYSTEM FOR SYNCHRONIZING PLAYING SPEED AND METHOD THEREOF 有权
公开(公告)号：US20170286054A1
公开(公告)日：2017-10-05
申请号：US15291954
申请日：2016-10-12
申请人： ALi Corporation
发明人： Yue-Yong Chen
IPC分类号： G06F3/16 , H04W84/12
CPC分类号： G06F3/165 , G11B27/10 , H04W84/12
摘要： A WLAN player for synchronizing playing speed includes a speed adjusting module, which is adapted to adjust a speed that the WLAN player plays a medium according to a first playing-progress value and a first clock value of another WLAN player, so as to synchronously play the medium together with said another WLAN player. The WLAN player has a second playing-progress value and a second clock value. The speed adjusting module is configured to calculate a progress difference between the second playing-progress value and the first playing-progress value; calculate a time difference between the second clock value and the first clock value; calculate a specific progress difference according to the progress difference and the time difference; and adjust the speed that the WLAN player plays the medium according to the specific progress difference. In this way, a synchronization error between the WLAN players is effectively decreased.

3. 发明授权

US09762336B2 Calibration method and calibration circuit 有权
公开(公告)号：US09762336B2
公开(公告)日：2017-09-12
申请号：US15298489
申请日：2016-10-20
申请人： ALI CORPORATION
发明人： Yue-Yong Chen
IPC分类号： H04L5/12 , H04L27/38 , H04B17/21 , H04B1/16 , H04L27/152
CPC分类号： H04B17/21 , H04B1/16 , H04B17/17 , H04L27/1525 , H04L27/3863
摘要： Disclosed are a calibration method and a calibration circuit. The calibration method and the calibration circuit effectively calibrate the mismatches between the first signal path and the second signal path of a receiver by calibrating a plurality of tap coefficients of a finite impulse response filter configured in the second signal path and optimizing the tap coefficients. The calibration and optimization for the tap coefficients of the finite impulse response filter is according to differences between the electrical characteristics the analog-to-digital convertor and the LPF in the first signal path and differences between the analog-to-digital convertor and the LPF in the second signal path. These differences are obtained when the data reception has not yet started by the receiver (that is, when the receiver is working in a training mode).

4. 发明申请

US20150085959A1 DIGITAL VIDEO BROADCAST RECEIVER 有权
标题翻译：数字视频广播接收器
公开(公告)号：US20150085959A1
公开(公告)日：2015-03-26
申请号：US14255434
申请日：2014-04-17
申请人： ALI CORPORATION
发明人： Hou-Kuan Sung , Chih-Yu Chuang , Yue-Yong Chen
IPC分类号： H04N5/44 , H03L7/00 , H04L27/22
CPC分类号： H04N5/44 , H03L7/00 , H04L27/22 , H04N5/455
摘要： A digital video broadcast receiver including a frequency synthesizer, a plurality of frequency dividing-phase shifting circuits, an antenna and a plurality of signal processing modules is provided. The frequency synthesizer synthesizes a first frequency signal. The frequency dividing-phase shifting circuits individually perform a frequency dividing-phase shifting operation on the first frequency signal to generate a plurality of first signals having different frequencies and a plurality of second signals corresponding to the first signals, where each of the first signals is orthogonal to the corresponding second signal. The antenna receives a radio frequency signal. The signal processing modules respectively obtain a plurality of signal components belonging to different sub-bands from the radio frequency signal according to the first signals and the second signals.
摘要翻译：提供了包括频率合成器，多个分频移相电路，天线和多个信号处理模块的数字视频广播接收机。频率合成器合成第一频率信号。分频移相电路分别对第一频率信号执行分频移相操作，以产生具有不同频率的多个第一信号和对应于第一信号的多个第二信号，其中每个第一信号为与相应的第二信号正交。天线接收射频信号。信号处理模块根据第一信号和第二信号分别从射频信号获得属于不同子带的多个信号分量。

5. 发明授权

US09806877B2 Calibration method and calibration circuit 有权
公开(公告)号：US09806877B2
公开(公告)日：2017-10-31
申请号：US15291938
申请日：2016-10-12
申请人： ALI CORPORATION
发明人： Yue-Yong Chen
IPC分类号： H04L7/00
CPC分类号： H04L7/0033 , H04L27/38
摘要： Disclosed are a calibration method and a calibration circuit. The calibration method and the calibration circuit effectively calibrate the mismatches between the first signal path and the second signal path of a transmitter by calibrating a plurality of tap coefficients of the FIR filter configured in the second signal path and optimizing the tap coefficients. The calibration and optimization for the tap coefficients of the FIR filter is according to differences between the electrical characteristics the DAC convertor and the LPF in the first signal path and differences between the DAC convertor and the LPF in the second signal path. These differences are obtained when the data transmission has not yet started by the transmitter (that is, when the transmitter is working in a training mode).

6. 发明授权

US09185322B2 Digital video broadcast receiver 有权
标题翻译：数字视频广播接收机
公开(公告)号：US09185322B2
公开(公告)日：2015-11-10
申请号：US14255434
申请日：2014-04-17
申请人： ALi Corporation
发明人： Hou-Kuan Sung , Chih-Yu Chuang , Yue-Yong Chen
IPC分类号： H03K9/00 , H04L27/00 , H04N5/44 , H04L27/22 , H03L7/00 , H04N5/455
CPC分类号： H04N5/44 , H03L7/00 , H04L27/22 , H04N5/455
摘要： A digital video broadcast receiver including a frequency synthesizer, a plurality of frequency dividing-phase shifting circuits, an antenna and a plurality of signal processing modules is provided. The frequency synthesizer synthesizes a first frequency signal. The frequency dividing-phase shifting circuits individually perform a frequency dividing-phase shifting operation on the first frequency signal to generate a plurality of first signals having different frequencies and a plurality of second signals corresponding to the first signals, where each of the first signals is orthogonal to the corresponding second signal. The antenna receives a radio frequency signal. The signal processing modules respectively obtain a plurality of signal components belonging to different sub-bands from the radio frequency signal according to the first signals and the second signals.
摘要翻译：提供了包括频率合成器，多个分频移相电路，天线和多个信号处理模块的数字视频广播接收机。频率合成器合成第一频率信号。分频移相电路分别对第一频率信号执行分频移相操作，以产生具有不同频率的多个第一信号和对应于第一信号的多个第二信号，其中每个第一信号为与相应的第二信号正交。天线接收射频信号。信号处理模块根据第一信号和第二信号分别从射频信号获得属于不同子带的多个信号分量。

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