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1. 发明申请

US20050143039A1 Image rejection quadratic filter 失效
标题翻译：图像抑制二次滤波器
公开(公告)号：US20050143039A1
公开(公告)日：2005-06-30
申请号：US10448740
申请日：2003-05-29
申请人： Takatsugu Kamata , Kimitake Utsunomiya
发明人： Takatsugu Kamata , Kimitake Utsunomiya
IPC分类号： H04N5/44 , H03D7/18 , H03H11/04 , H03H11/12 , H04B1/26 , H04B1/10 , H04B1/18
CPC分类号： H03H11/1291 , H03H11/04 , H03H11/1213
摘要： An image rejection quadratic filter is tunable to filter image frequencies over a wide band. In one embodiment, the image rejection filter includes in-phase and quadrature phase mixers. The image rejection has a fractional transfer function. The image rejection filter has two sub-circuits, wherein the first sub-circuit produces the imaginary component of the transfer function, and the second sub-circuit produces the real component of the transfer function. The first sub-circuit receives the Q signal, and the second sub-circuit receives the I signal. In one embodiment, to create the fractional transfer function, a multi-feedback looped integrator is used.
摘要翻译：图像抑制二次滤波器是可调谐的，以过滤宽频带上的图像频率。在一个实施例中，镜像抑制滤波器包括同相和正交相位混频器。镜像抑制具有分数传递函数。图像抑制滤波器具有两个子电路，其中第一子电路产生传递函数的虚分量，第二子电路产生传递函数的实部分量。第一子电路接收Q信号，第二子电路接收I信号。在一个实施例中，为了创建分数传递函数，使用多反馈循环积分器。

2. 发明申请

US20070229716A1 Methods and apparatus for implementing a receiver on a monolithic integrated circuit 审中-公开
公开(公告)号：US20070229716A1
公开(公告)日：2007-10-04
申请号：US11700687
申请日：2007-01-30
申请人： Kimitake Utsunomiya , Takatsugu Kamata
发明人： Kimitake Utsunomiya , Takatsugu Kamata
IPC分类号： H04N5/50
CPC分类号： H04N5/4446 , H03D7/161 , H03J5/244 , H03J2200/10 , H04N21/426
摘要： A monolithic integrated circuit includes a tuner and a SAW filter function. The tuner receives a radio frequency (RF) television signal that has a range of fundamental frequencies from 55 mega hertz (Mhz) to 880 Mhz. The tuner down converts the RF television signal to an intermediate frequency (IF) television signal that has a low fundamental frequency. In one embodiment, the SAWF filter performs the SAW filter function on the IF television signal. In another embodiment, the SAWF filter performs the SAW filter function at baseband. An IF processor for processing the IF television signal to generate a video television signal and an audio television signal is disclosed.

3. 发明申请

US20070165143A1 Methods and apparatus for implementing a receiver on a monolithic integrated circuit 审中-公开
公开(公告)号：US20070165143A1
公开(公告)日：2007-07-19
申请号：US11700515
申请日：2007-01-30
申请人： Kimitake Utsunomiya , Takatsugu Kamata
发明人： Kimitake Utsunomiya , Takatsugu Kamata
IPC分类号： H04N5/50
CPC分类号： H04N5/4446 , H03D7/161 , H03J5/244 , H03J2200/10 , H04N21/426
摘要： A monolithic integrated circuit includes a tuner and a SAW filter function. The tuner receives a radio frequency (RF) television signal that has a range of fundamental frequencies from 55 mega hertz (Mhz) to 880 Mhz. The tuner down converts the RF television signal to an intermediate frequency (IF) television signal that has a low fundamental frequency. In one embodiment, the SAWF filter performs the SAW filter function on the IF television signal. In another embodiment, the SAWF filter performs the SAW filter function at baseband. An IF processor for processing the IF television signal to generate a video television signal and an audio television signal is disclosed.

4. 发明授权

US07199844B2 Quadratic nyquist slope filter 失效
标题翻译：二次奈奎斯特斜率滤波器
公开(公告)号：US07199844B2
公开(公告)日：2007-04-03
申请号：US10262514
申请日：2002-09-30
申请人： Kimitake Utsunomiya , Takatsugu Kamata
发明人： Kimitake Utsunomiya , Takatsugu Kamata
IPC分类号： H04N5/455
CPC分类号： H03D1/2245
摘要： A television demodulator circuit, for use in a television receiver, generates baseband video and audio outputs from a television signal, such as an intermediate frequency television signal. The I, Q demodulator circuit mixes the television signal with an in-phase (“I”) local oscillator signal and a quadrature phase (“Q”) local oscillator signal at the tuned frequency to generate baseband I and Q signals. The baseband I and Q signals are input to low pass filters and a Nyquist slope filter. The Nyquist slope filter generates, for the baseband I and Q signals, a Nyquist slope response and attenuates channels adjacent to the tuned television channel. The Nyquist slope filter comprises a transfer function with at least two zero crossings, so as to provide a notch filter response for attenuation of a television channel adjacent to the tuned television channel. For example, the transfer function may have three zero crossings to attenuate a sound carrier frequency, a color carrier frequency, and a picture frequency for the television channel adjacent to the tuned television channel. The transfer function, expressed in the S domain, comprises an all-pass fractional transfer function with a real number in the numerator and a complex number in the denominator. A television receiver that incorporates the I, Q demodulator circuit is disclosed.
摘要翻译：用于电视接收机的电视解调器电路从诸如中频电视信号的电视信号产生基带视频和音频输出。 I，Q解调器电路将电视信号与调谐频率的同相（“I”）本地振荡器信号和正交相位（“Q”）本地振荡器信号混合，以产生基带I和Q信号。基带I和Q信号被输入到低通滤波器和奈奎斯特斜率滤波器。奈奎斯特斜率滤波器为基带I和Q信号产生奈奎斯特斜率响应，并衰减与调谐电视频道相邻的频道。奈奎斯特斜率滤波器包括具有至少两个过零点的传递函数，以便为与调谐电视频道相邻的电视频道的衰减提供陷波滤波器响应。例如，传递函数可以具有三个过零点，以衰减与调谐的电视频道相邻的电视频道的声音载波频率，色彩载波频率和图像频率。在S域中表示的传递函数包括在分子中具有实数的全通分数传递函数和分母中的复数。公开了一种结合了I，Q解调电路的电视接收机。

5. 发明授权

US07102465B2 Frequency discrete LC filter bank 失效
公开(公告)号：US07102465B2
公开(公告)日：2006-09-05
申请号：US11041064
申请日：2005-01-21
申请人： Kimitake Utsunomiya , Takatsugu Kamata
发明人： Kimitake Utsunomiya , Takatsugu Kamata
IPC分类号： H03H7/01 , H01P1/15
CPC分类号： H03H7/0153 , H03H7/1775 , H03J2200/10 , H03J2200/15
摘要： An inductive (“L”)-capacitive (“C”) filter bank has application for use in a television receiver. The LC filter includes inductors configured in at least one inductive (“L”) bank, and capacitors configured in at least one capacitive (“C”) bank. The inductors and capacitors are selectively enabled so as to configure an LC filter with at least one inductor from the L bank and at least one capacitor from the C bank. A combination of inductors and capacitors are selected through the semiconductor switches so as to maximize a Q factor for the LC filter.

6. 发明授权

US07327406B2 Methods and apparatus for implementing a receiver on a monolithic integrated circuit 失效
标题翻译：在单片集成电路上实现接收机的方法和装置
公开(公告)号：US07327406B2
公开(公告)日：2008-02-05
申请号：US10273389
申请日：2002-10-16
申请人： Kimitake Utsunomiya , Takatsugu Kamata
发明人： Kimitake Utsunomiya , Takatsugu Kamata
IPC分类号： H04N5/50 , H04N5/44
CPC分类号： H04N5/4446 , H03D7/161 , H03J5/244 , H03J2200/10 , H04N21/426
摘要： A monolithic integrated circuit includes a tuner and a SAW filter function. The tuner receives a radio frequency (RF) television signal that has a range of fundamental frequencies from 55 mega hertz (Mhz) to 880 Mhz. The tuner down converts the RF television signal to an intermediate frequency (IF) television signal that has a low fundamental frequency. In one embodiment, the SAWF filter performs the SAW filter function on the IF television signal. In another embodiment, the SAWF filter performs the SAW filter function at baseband. An IF processor for processing the IF television signal to generate a video television signal and an audio television signal is disclosed.
摘要翻译：单片集成电路包括调谐器和SAW滤波器功能。调谐器接收射频（RF）电视信号，其基频范围为55兆赫兹（兆赫兹）至880兆赫兹。调谐器将RF电视信号转换成具有低基频的中频（IF）电视信号。在一个实施例中，SAWF滤波器在IF电视信号上执行SAW滤波器功能。在另一个实施例中，SAWF滤波器在基带处执行SAW滤波器功能。公开了一种用于处理IF电视信号以产生视频电视信号和音频电视信号的IF处理器。

7. 发明授权

US06750734B2 Methods and apparatus for tuning an LC filter 失效
标题翻译：用于调整LC滤波器的方法和装置
公开(公告)号：US06750734B2
公开(公告)日：2004-06-15
申请号：US10271689
申请日：2002-10-15
申请人： Kimitake Utsunomiya , Takatsugu Kamata
发明人： Kimitake Utsunomiya , Takatsugu Kamata
IPC分类号： H03H701
CPC分类号： H03H7/0153 , H03H3/00 , H03H7/1775 , H03J2200/10 , H03J2200/15
摘要： A receiver, such as a television receiver, tunes an inductive (“L”) and capacitive (“C”) filter based on a desired frequency. The LC filter includes a plurality of inductors, configured in at least one inductive (“L”) bank, and a plurality of capacitors configured in at least one capacitive (“C”) bank. The inductors are selectively enabled for the LC filter by an N code, and the capacitors are selectively enabled for the LC filter by an M code. The receiver uses a functional comparator to compare offset, capacitive, inductive and frequency values to tune the LC filter. Techniques for tuning the LC filter for operation in the VHF and UHF bands are disclosed.
摘要翻译：诸如电视接收机的接收机基于期望的频率来调谐感应（“L”）和电容（“C”）滤波器。 LC滤波器包括配置在至少一个电感（“L”）组中的多个电感器和配置在至少一个电容（“C”）组中的多个电容器。电感器通过N代码选择性地使能LC滤波器，并且通过M代码为LC滤波器选择性地使能电容器。接收机使用功能比较器来比较偏移，电容，电感和频率值来调整LC滤波器。公开了用于调谐在VHF和UHF频带中操作的LC滤波器的技术。

8. 发明授权

US07333155B2 Quadratic video demodulation with baseband nyquist filter 失效
标题翻译：用基带奈奎斯特滤波器进行二次视频解调
公开(公告)号：US07333155B2
公开(公告)日：2008-02-19
申请号：US10457056
申请日：2003-06-05
申请人： Takatsugu Kamata , Kimitake Utsunomiya
发明人： Takatsugu Kamata , Kimitake Utsunomiya
IPC分类号： H04N5/455 , H04N5/44
CPC分类号： H03H11/1213 , H03D3/007 , H03H11/0405
摘要： A television tuner is fully implemented on a monolithic integrated circuit. The television tuner includes a baseband SAWF function fully integrated in silicon. The SAWF function includes trap and bandpass filters. A video demodulation circuit includes an I, Q demodulation and a post Nyquist filter.
摘要翻译：电视调谐器完全实现在单片集成电路上。电视调谐器包括完全集成在硅中的基带SAWF功能。 SAWF功能包括陷波和带通滤波器。视频解调电路包括I，Q解调和后奈奎斯特滤波器。

9. 发明申请

US20070126937A1 Methods and apparatus for implementing a receiver on a monolithic integrated circuit 审中-公开
标题翻译：在单片集成电路上实现接收机的方法和装置
公开(公告)号：US20070126937A1
公开(公告)日：2007-06-07
申请号：US11700511
申请日：2007-01-30
申请人： Kimitake Utsunomiya , Takatsugu Kamata
发明人： Kimitake Utsunomiya , Takatsugu Kamata
IPC分类号： H04N5/50
CPC分类号： H04N5/4446 , H03D7/161 , H03J5/244 , H03J2200/10 , H04N21/426
摘要： A monolithic integrated circuit includes a tuner and a SAW filter function. The tuner receives a radio frequency (RF) television signal that has a range of fundamental frequencies from 55 mega hertz (Mhz) to 880 Mhz. The tuner down converts the RF television signal to an intermediate frequency (IF) television signal that has a low fundamental frequency. In one embodiment, the SAWF filter performs the SAW filter function on the IF television signal. In another embodiment, the SAWF filter performs the SAW filter function at baseband. An IF processor for processing the IF television signal to generate a video television signal and an audio television signal is disclosed.
摘要翻译：单片集成电路包括调谐器和SAW滤波器功能。调谐器接收射频（RF）电视信号，其基频范围为55兆赫兹（兆赫兹）至880兆赫兹。调谐器将RF电视信号转换成具有低基频的中频（IF）电视信号。在一个实施例中，SAWF滤波器在IF电视信号上执行SAW滤波器功能。在另一个实施例中，SAWF滤波器在基带处执行SAW滤波器功能。公开了一种用于处理IF电视信号以产生视频电视信号和音频电视信号的IF处理器。

10. 发明授权

US07116961B2 Image rejection quadratic filter 失效
标题翻译：图像抑制二次滤波器
公开(公告)号：US07116961B2
公开(公告)日：2006-10-03
申请号：US10448740
申请日：2003-05-29
申请人： Takatsugu Kamata , Kimitake Utsunomiya
发明人： Takatsugu Kamata , Kimitake Utsunomiya
IPC分类号： H04B1/10 , H04B1/18
CPC分类号： H03H11/1291 , H03H11/04 , H03H11/1213
摘要： An image rejection quadratic filter is tunable to filter image frequencies over a wide band. In one embodiment, the image rejection filter includes in-phase and quadrature phase mixers. The image rejection has a fractional transfer function. The image rejection filter has two sub-circuits, wherein the first sub-circuit produces the imaginary component of the transfer function, and the second sub-circuit produces the real component of the transfer function. The first sub-circuit receives the Q signal, and the second sub-circuit receives the I signal. In one embodiment, to create the fractional transfer function, a multi-feedback looped integrator is used.
摘要翻译：图像抑制二次滤波器是可调谐的，以过滤宽频带上的图像频率。在一个实施例中，镜像抑制滤波器包括同相和正交相位混频器。镜像抑制具有分数传递函数。图像抑制滤波器具有两个子电路，其中第一子电路产生传递函数的虚分量，第二子电路产生传递函数的实部分量。第一子电路接收Q信号，第二子电路接收I信号。在一个实施例中，为了创建分数传递函数，使用多反馈循环积分器。

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