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1. 发明申请

US20080123777A1 Direct digital frequency synthesizer with phase error correction, method therefor, and receiver using same 失效
标题翻译：具有相位误差校正的直接数字频率合成器，其方法和使用其的接收机
公开(公告)号：US20080123777A1
公开(公告)日：2008-05-29
申请号：US11442195
申请日：2006-05-26
申请人： David Trager , Mitchell Reid
发明人： David Trager , Mitchell Reid
IPC分类号： H03B5/08 , H03B5/18
CPC分类号： G06F1/0353 , G06F1/0335 , G06F1/0342
摘要： A receiver (1000) includes a direct digital frequency synthesizer (DDFS) (700) and first (1040) and second (1042) mixers. The DDFS (700) has a first output for providing a first local oscillator signal, and a second output for providing a second local oscillator signal offset from a quadrature relationship with the first local oscillator signal by a phase offset. The first mixer (1040) has a first input for receiving a radio frequency (RF) signal, a second input for receiving the first local oscillator signal, and an output for providing an in-phase signal at another frequency. The second mixer (1042) has a first input for receiving the RF signal, a second input for receiving the second local oscillator signal, and an output for providing a quadrature signal at the other frequency. The DDFS (700) may be implemented using first (702) and second (704) memories storing portions of a sinusoidal waveform and extra memories (706, 708) supporting the phase offset.
摘要翻译：接收器（1000）包括直接数字频率合成器（DDFS）（700）和第一（1040）和第二（1042）混频器。 DDFS（700）具有用于提供第一本地振荡器信号的第一输出和用于提供与第一本地振荡器信号的正交关系偏移相位偏移的第二本地振荡器信号的第二输出。第一混频器（1040）具有用于接收射频（RF）信号的第一输入端，用于接收第一本机振荡器信号的第二输入端和用于提供另一频率的同相信号的输出端。第二混频器（1042）具有用于接收RF信号的第一输入端，用于接收第二本机振荡器信号的第二输入端和用于以另一频率提供正交信号的输出端。 DDFS（700）可以使用存储正弦波形的部分的第一（702）和第二（704）存储器以及支持相位偏移的额外存储器（706,708）来实现。

2. 发明授权

US08599312B2 Digital signal processor (DSP) architecture for a hybrid television tuner 有权
公开(公告)号：US08599312B2
公开(公告)日：2013-12-03
申请号：US12603877
申请日：2009-10-22
申请人： Alan Hendrickson , David Trager , Mitch Reid , Li Gao , John Khoury
发明人： Alan Hendrickson , David Trager , Mitch Reid , Li Gao , John Khoury
IPC分类号： H04N3/27
CPC分类号： H04N5/46 , H03J1/0008 , H04N5/455 , H04N5/50 , H04N21/4263
摘要： According to one aspect, a mixed-signal tuner for analog and digital TV reception incorporates a demodulator for analog TV, employing various features for resolving limitations of the analog circuitry and for achieving compatibility with various global TV standards. Such features, which may be present in one or more embodiments, include the use of a variable sample rate in all digital clocks for frequency planning, and use of a microcontroller (MCU) to control various circuitry of the tuner.

3. 发明申请

US20100328536A1 Digital Signal Processor (DSP) Architecture For A Hybrid Television Tuner 有权
标题翻译：混合电视调谐器的数字信号处理器（DSP）架构
公开(公告)号：US20100328536A1
公开(公告)日：2010-12-30
申请号：US12493955
申请日：2009-06-29
申请人： Alan Hendrickson , David Trager , Mitch Reid , Li Gao , John Khoury
发明人： Alan Hendrickson , David Trager , Mitch Reid , Li Gao , John Khoury
IPC分类号： H04N5/00 , H04N5/50 , H04N5/455
CPC分类号： H04N5/46 , H03J1/0008 , H04N5/455 , H04N5/50 , H04N21/4263
摘要： According to one aspect, a mixed-signal tuner for analog and digital TV reception incorporates a demodulator for analog TV, employing various features for resolving limitations of the analog circuitry and for achieving compatibility with various global TV standards. Such features, which may be present in one or more embodiments, include the use of a variable sample rate in all digital clocks for frequency planning, and use of a microcontroller (MCU) to control various circuitry of the tuner.
摘要翻译：根据一个方面，用于模拟和数字电视接收的混合信号调谐器包括用于模拟电视的解调器，其采用各种特征来解决模拟电路的限制并实现与各种全球电视标准的兼容性。可以存在于一个或多个实施例中的这些特征包括在用于频率规划的所有数字时钟中使用可变采样率，以及使用微控制器（MCU）来控制调谐器的各种电路。

4. 发明授权

US08593526B1 Apparatus for measuring noise in an analog signal 有权
标题翻译：用于测量模拟信号中噪声的装置
公开(公告)号：US08593526B1
公开(公告)日：2013-11-26
申请号：US13586854
申请日：2012-08-15
申请人： Alan Hendrickson , David Trager , Zhongchun Liu
发明人： Alan Hendrickson , David Trager , Zhongchun Liu
IPC分类号： H04N17/02 , H04N5/08
CPC分类号： H04N5/213 , H04N5/21 , H04N17/045
摘要： Techniques are disclosed relating to video signal-to-noise ratio (VSNR) measurement. In one embodiment, an analog television signal receiver includes a measurement circuit configured to measure noise in a video signal over one or more intervals that correspond to a horizontal control signal of the video signal and a control unit configured to determine a VSNR based on the measurement. In another embodiment, a first noise calculation circuit is configured to determine first noise information from a video signal and a second noise calculation circuit is configured to determine second noise information from a video signal in a manner different from the first noise calculation circuit. A control unit may be configured to generate a VSNR based on one or both of the first noise information and the second noise information.
摘要翻译：公开了与视频信噪比（VSNR）测量有关的技术。在一个实施例中，模拟电视信号接收机包括测量电路，该测量电路经配置以在对应于视频信号的水平控制信号的一个或多个间隔上测量视频信号中的噪声;以及控制单元，被配置为基于测量来确定VSNR 。在另一个实施例中，第一噪声计算电路被配置为从视频信号确定第一噪声信息，并且第二噪声计算电路被配置为以与第一噪声计算电路不同的方式从视频信号确定第二噪声信息。控制单元可以被配置为基于第一噪声信息和第二噪声信息中的一个或两者来生成VSNR。

5. 发明授权

US07623601B2 Controlling gain in a satellite receiver 失效
标题翻译：控制卫星接收机的增益
公开(公告)号：US07623601B2
公开(公告)日：2009-11-24
申请号：US11247477
申请日：2005-10-11
申请人： Ramin Khoini-Poorfard , David Trager
发明人： Ramin Khoini-Poorfard , David Trager
IPC分类号： H04L27/08
CPC分类号： H04L27/3809 , H03G3/3068 , H03M1/185
摘要： In one embodiment, the present invention includes a method for digitally detecting a first signal strength corresponding to a multi-channel spectrum of an incoming radio frequency (RF) spectrum and digitally detecting a second signal strength corresponding to a selected channel of the incoming RF spectrum. Based on these values, one or more one gain stages of a receiver, such as a satellite television receiver for the incoming RF spectrum, may be controlled. Other embodiments are described and claimed.
摘要翻译：在一个实施例中，本发明包括一种用于数字检测对应于输入射频（RF）频谱的多信道频谱的第一信号强度的方法，并且数字地检测对应于输入RF频谱的选定信道的第二信号强度。基于这些值，可以控制接收机的一个或多个增益级，例如用于输入RF频谱的卫星电视接收机。描述和要求保护其他实施例。

6. 发明申请

US20090213275A1 Digital interface for tuner-demodulator communications 有权
标题翻译：用于调谐器 - 解调器通信的数字接口
公开(公告)号：US20090213275A1
公开(公告)日：2009-08-27
申请号：US12072642
申请日：2008-02-27
申请人： David Trager
发明人： David Trager
IPC分类号： H04L29/02 , H04N5/46 , H04B3/00
CPC分类号： H04N5/44 , H04N21/42638 , H04N21/4305 , H04N21/4342 , H04N21/4382
摘要： An apparatus may include analog tuner circuitry, a digital unit to process incoming data, an analog interface to receive the processed data for conversion back into analog signals, and a first pin to output the analog signals on a link. A separate digital interface may be present and can be enabled to receive the processed data and encode it into a serial bit stream for transmission via the first pin, avoiding the need for the analog interface to operate when the digital interface is enabled.
摘要翻译：一种装置可以包括模拟调谐器电路，用于处理输入数据的数字单元，用于接收经处理的数据以转换回模拟信号的模拟接口，以及第一引脚以在链路上输出模拟信号。可以存在单独的数字接口，并且可以使其能够接收经处理的数据并将其编码成串行比特流以经由第一引脚进行传输，避免了当数字接口被使能时模拟接口的操作需要。

7. 发明授权

US08605224B2 Digital interface for tuner-demodulator communications 有权
公开(公告)号：US08605224B2
公开(公告)日：2013-12-10
申请号：US12072642
申请日：2008-02-27
申请人： David Trager
发明人： David Trager
IPC分类号： H04N5/38 , H04N5/44 , H04N5/455
CPC分类号： H04N5/44 , H04N21/42638 , H04N21/4305 , H04N21/4342 , H04N21/4382
摘要： An apparatus may include analog tuner circuitry, a digital unit to process incoming data, an analog interface to receive the processed data for conversion back into analog signals, and a first pin to output the analog signals on a link. A separate digital interface may be present and can be enabled to receive the processed data and encode it into a serial bit stream for transmission via the first pin, avoiding the need for the analog interface to operate when the digital interface is enabled.

8. 发明授权

US08576343B2 Digital signal processor (DSP) architecture for a hybrid television tuner 有权
标题翻译：用于混合电视调谐器的数字信号处理器（DSP）架构
公开(公告)号：US08576343B2
公开(公告)日：2013-11-05
申请号：US12493955
申请日：2009-06-29
申请人： Alan Hendrickson , David Trager , Mitch Reid , Li Gao , John Khoury
发明人： Alan Hendrickson , David Trager , Mitch Reid , Li Gao , John Khoury
IPC分类号： H04N5/44
CPC分类号： H04N5/46 , H03J1/0008 , H04N5/455 , H04N5/50 , H04N21/4263
摘要： According to one aspect, a mixed-signal tuner for analog and digital TV reception incorporates a demodulator for analog TV, employing various features for resolving limitations of the analog circuitry and for achieving compatibility with various global TV standards. Such features, which may be present in one or more embodiments, include the use of a variable sample rate in all digital clocks for frequency planning, and use of a microcontroller (MCU) to control various circuitry of the tuner.
摘要翻译：根据一个方面，用于模拟和数字电视接收的混合信号调谐器包括用于模拟电视的解调器，其采用各种特征来解决模拟电路的限制并实现与各种全球电视标准的兼容性。可以存在于一个或多个实施例中的这些特征包括在用于频率规划的所有数字时钟中使用可变采样率，以及使用微控制器（MCU）来控制调谐器的各种电路。

9. 发明申请

US20100328544A1 Digital Signal Processor (DSP) Architecture For A Hybrid Television Tuner 有权
公开(公告)号：US20100328544A1
公开(公告)日：2010-12-30
申请号：US12603877
申请日：2009-10-22
申请人： Alan Hendrickson , David Trager , Mitch Reid , Li Gao , John Khoury
发明人： Alan Hendrickson , David Trager , Mitch Reid , Li Gao , John Khoury
IPC分类号： H04N5/455 , H04L27/08
CPC分类号： H04N5/46 , H03J1/0008 , H04N5/455 , H04N5/50 , H04N21/4263
摘要： According to one aspect, a mixed-signal tuner for analog and digital TV reception incorporates a demodulator for analog TV, employing various features for resolving limitations of the analog circuitry and for achieving compatibility with various global TV standards. Such features, which may be present in one or more embodiments, include the use of a variable sample rate in all digital clocks for frequency planning, and use of a microcontroller (MCU) to control various circuitry of the tuner.

10. 发明申请

US20070081615A1 Controlling gain in a satellite receiver 失效
标题翻译：控制卫星接收机的增益
公开(公告)号：US20070081615A1
公开(公告)日：2007-04-12
申请号：US11247477
申请日：2005-10-11
申请人： Ramin Khoini-Poorfard , David Trager
发明人： Ramin Khoini-Poorfard , David Trager
IPC分类号： H04L27/08 , H04B1/10
CPC分类号： H04L27/3809 , H03G3/3068 , H03M1/185
摘要： In one embodiment, the present invention includes a method for digitally detecting a first signal strength corresponding to a multi-channel spectrum of an incoming radio frequency (RF) spectrum and digitally detecting a second signal strength corresponding to a selected channel of the incoming RF spectrum. Based on these values, one or more one gain stages of a receiver, such as a satellite television receiver for the incoming RF spectrum, may be controlled. Other embodiments are described and claimed.
摘要翻译：在一个实施例中，本发明包括一种用于数字检测对应于输入射频（RF）频谱的多信道频谱的第一信号强度的方法，并且数字地检测对应于输入RF频谱的选定信道的第二信号强度。基于这些值，可以控制接收机的一个或多个增益级，例如用于输入RF频谱的卫星电视接收机。描述和要求保护其他实施例。

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