-
公开(公告)号：US07315333B2
公开(公告)日：2008-01-01
申请号：US11001506
申请日：2004-11-30
Applicant: Shun-Chi Chuang
Inventor： Shun-Chi Chuang
IPC: H04N5/50
Abstract: TV tuners and methods thereof are provided. A TV tuner includes a first frequency converting circuit, a second frequency converting circuit, and a demodulator. The first frequency converting circuit, switchable between a first operating mode and a second operating mode, receives an RF signal and outputs a converted signal by performing high-side injection on the RF signal in the first operating mode and performing frequency addition on the RF signal in the second operating mode. The second frequency converting circuit performs a down conversion on the converted signal from the first frequency converting circuit to obtain an intermediate frequency signal. The demodulator demodulates the intermediate frequency signal and outputs a baseband frequency signal comprising video and audio signals.
Abstract translation: 提供电视调谐器及其方法。 电视调谐器包括第一频率转换电路，第二频率转换电路和解调器。 可在第一操作模式和第二操作模式之间切换的第一变频电路通过在第一操作模式下对RF信号执行高侧注入并在RF信号上执行频率相加来接收RF信号并输出转换信号 在第二种操作模式。 第二变频电路对来自第一变频电路的转换信号进行下变频，得到中频信号。 解调器解调中频信号并输出包括视频和音频信号的基带频率信号。
-
公开(公告)号：US20090066448A1
公开(公告)日：2009-03-12
申请号：US11939716
申请日：2007-11-14
Applicant: Wen-Po Ho , Shun-Chi Chuang
Inventor： Wen-Po Ho , Shun-Chi Chuang
Abstract: A tuner and a transformer formed by printed circuit board thereof are provided. The transformer includes a first winding and a second winding. In which, the first winding forms a first inductor and the second winding forms a second inductor. The transformer is formed by the first and the second inductors, wherein the first winding and the second winding are formed by conducting wires of a printed circuit board.
Abstract translation: 提供了由其印刷电路板形成的调谐器和变压器。 变压器包括第一绕组和第二绕组。 其中，第一绕组形成第一电感器，第二绕组形成第二电感器。 变压器由第一和第二电感器形成，其中第一绕组和第二绕组由印刷电路板的导线形成。
-
公开(公告)号：US08188806B2
公开(公告)日：2012-05-29
申请号：US11939716
申请日：2007-11-14
Applicant: Wen-Po Ho , Shun-Chi Chuang
Inventor： Wen-Po Ho , Shun-Chi Chuang
Abstract: A tuner and a transformer formed by printed circuit board thereof are provided. The transformer includes a first winding and a second winding. In which, the first winding forms a first inductor and the second winding forms a second inductor. The transformer is formed by the first and the second inductors, wherein the first winding and the second winding are formed by conducting wires of a printed circuit board.
Abstract translation: 提供了由其印刷电路板形成的调谐器和变压器。 变压器包括第一绕组和第二绕组。 其中，第一绕组形成第一电感器，第二绕组形成第二电感器。 变压器由第一和第二电感器形成，其中第一绕组和第二绕组由印刷电路板的导线形成。
-
公开(公告)号：US20050122437A1
公开(公告)日：2005-06-09
申请号：US11001506
申请日：2004-11-30
Applicant: Shun-Chi Chuang
Inventor： Shun-Chi Chuang
Abstract: TV tuners and methods thereof are provided. A TV tuner includes a first frequency converting circuit, a second frequency converting circuit, and a demodulator. The first frequency converting circuit, switchable between a first operating mode and a second operating mode, receives an RF signal and outputs a converted signal by performing high-side injection on the RF signal in the first operating mode and performing frequency addition on the RF signal in the second operating mode. The second frequency converting circuit performs a down conversion on the converted signal from the first frequency converting circuit to obtain an intermediate frequency signal. The demodulator demodulates the intermediate frequency signal and outputs a baseband frequency signal comprising video and audio signals.
Abstract translation: 提供电视调谐器及其方法。 电视调谐器包括第一频率转换电路，第二频率转换电路和解调器。 可在第一操作模式和第二操作模式之间切换的第一变频电路通过在第一操作模式下对RF信号执行高侧注入并在RF信号上执行频率相加来接收RF信号并输出转换信号 在第二种操作模式。 第二变频电路对来自第一变频电路的转换信号进行下变频，得到中频信号。 解调器解调中频信号并输出包括视频和音频信号的基带频率信号。
-
-
-
Search Results
4
records
(took 0.01 seconds)
