WO2017000732A1 - 一种电视信号处理的装置和电视机顶盒 - Google Patents

一种电视信号处理的装置和电视机顶盒 Download PDF

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Publication number
WO2017000732A1
WO2017000732A1 PCT/CN2016/084256 CN2016084256W WO2017000732A1 WO 2017000732 A1 WO2017000732 A1 WO 2017000732A1 CN 2016084256 W CN2016084256 W CN 2016084256W WO 2017000732 A1 WO2017000732 A1 WO 2017000732A1
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television signal
signal processing
satellite
television
pass filter
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PCT/CN2016/084256
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English (en)
French (fr)
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程树青
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深圳市九洲电器有限公司
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Publication of WO2017000732A1 publication Critical patent/WO2017000732A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/44—Receiver circuitry for the reception of television signals according to analogue transmission standards
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/41—Structure of client; Structure of client peripherals
    • H04N21/426—Internal components of the client ; Characteristics thereof
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/10—Adaptations for transmission by electrical cable

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  • the present invention relates to the field of signal processing technologies, and in particular, to a television signal processing device and a television set top box.
  • an embodiment of the present invention provides a device for processing television signals and a television set top box.
  • a television signal processing apparatus includes a power module, a signal receiver, a radio frequency choke, and a duplexer.
  • the power module is configured to provide power to a signal receiver and a duplexer
  • the signal receiver is configured to receive a satellite television signal or a terrestrial television signal
  • the RF choke is connected to the power module for filtering a terrestrial television signal or a satellite television signal, and controlling the power module to supply power to the signal receiver;
  • the duplexer is configured to separate the satellite television signal from the terrestrial television signal, and output the received satellite television signal and the terrestrial television signal, respectively.
  • the power module is an LNB low noise block power supply.
  • the RF choke includes a capacitor and an inductor, and the inductor is a hollow wound inductor.
  • the splitter further includes a low pass filter that separates and outputs the received terrestrial television signal, and the high pass filter that separates and outputs the received satellite television signal.
  • the low pass filter includes an eighth order elliptical filter
  • the high pass filter includes a seventh order elliptical filter
  • the television signal processing device further includes: a high pass filter, a low noise amplifier connected to the low pass filter output of the duplexer, including a third order elliptical filter for low frequency signal Filtering is performed; the low noise amplifier is used to amplify terrestrial television signals.
  • the television signal processing apparatus further includes an impedance matching network and a low noise amplifier, the impedance matching network being comprised of a microstrip line; the low noise amplifier for amplifying the satellite signal together with the impedance matching network.
  • the television signal processing apparatus further includes an unbalanced-balanced converter for converting the amplified terrestrial television signal or the single-ended signal of the satellite television signal into a differential signal for performing anti-interference processing.
  • the embodiment of the invention further provides a television set top box using the above television signal receiving device.
  • the television signal processing device and the television set top box provided by the embodiments of the present invention have the advantages of high gain, low noise system, high isolation, and good reflection loss by separating terrestrial television signals and satellite signals.
  • FIG. 1 is a structural diagram of a television signal receiver in the prior art
  • FIG. 2 is a structural diagram of a television signal processing apparatus according to Embodiment 1 of the present invention.
  • FIG. 3 is a circuit structural diagram of a radio frequency choke according to Embodiment 1 of the present invention.
  • FIG. 4 is a circuit structural diagram of a duplexer according to Embodiment 1 of the present invention.
  • FIG. 5 is a schematic diagram of signal simulation of a television signal processing apparatus according to Embodiment 1 of the present invention.
  • FIG. 6 is a structural diagram of a television signal processing apparatus according to Embodiment 2 of the present invention.
  • FIG. 7 is a structural diagram of a high-pass filter circuit according to Embodiment 2 of the present invention.
  • FIG. 8 is a structural diagram of a circuit of a low noise amplifier according to Embodiment 2 of the present invention.
  • FIG. 9 is a simulation diagram of a satellite television signal of a television signal processing apparatus according to Embodiment 2 of the present invention.
  • FIG. 10 is a structural diagram of a matching network and a low noise amplifier circuit according to Embodiment 2 of the present invention.
  • FIG. 11 is a schematic diagram of a terrestrial television signal of a television signal processing apparatus according to Embodiment 2 of the present invention.
  • a first embodiment of the present invention provides a television signal processing apparatus, including a power module 10, a signal receiver 11, a radio frequency choke 12, and a duplexer 13.
  • the power module 10 is configured to provide power to the signal receiver 11 and the duplexer 13;
  • the signal receiver 11 is configured to receive a satellite television signal or a terrestrial television signal
  • the RF choke 12 is connected to the power module 10 for filtering a terrestrial television signal or a satellite television signal, and controlling the power module to supply power to the signal receiver;
  • the duplexer 13 is configured to separate the satellite television signal from the terrestrial television signal and output the received satellite television signal and the terrestrial television signal, respectively.
  • the power module 10 is an LNB low noise block power supply.
  • the signal receiver 11 is a satellite television receiving antenna and a terrestrial television receiving cable, and has the content in the prior art, and details are not described herein again.
  • the RF choke 12 is used for blocking terrestrial television signals and satellite television signals, and supplies power to the antenna end of the signal receiver.
  • the circuit structure of the RF choke is shown in FIG. 3, and the LC circuit includes an inductor.
  • L1 and capacitor C6, the inductor uses a hollow winding inductor. Preferably, its parameters are: 12 turns, coil radius 2.2mm, length 5mm, wire diameter 0.4mm. Since the satellite television signal and the terrestrial television signal in the present invention have a wide frequency range of 170 MHz to 2150 MHz, the inductance of the RF choke must have a high resonance point, a high Q value, a large inductance value, etc., and at the same time For higher surge resistance, the inductor must have large current rating characteristics.
  • the duplexer 13 further includes a low pass filter 131 and a high pass filter 132 for separating the received television signals and filtering out the satellite television signals and the terrestrial television signals.
  • FIG. 4 it is a circuit configuration diagram of the duplexer 13.
  • PORT1 is a signal input port for receiving a television signal received by a signal receiver
  • PORT2 is a high-pass filter filtered satellite television signal output port
  • PORT3 is a low-pass filter filtered terrestrial television signal output port.
  • Figure 5 is a simulated S-parameter diagram, where S(1,1) expresses the reflection performance of the signal, which measures the reflection loss performance of the signal. The smaller the better, the experience is that the reflection loss of the system is less than 6 dB. The effect is small, but it is far from satisfactory in this design; S(2,1) indicates that the signal is input from PORT1, and the signal output from PORT2 is frequency response. It can be seen that it can have more than 40dB at ⁇ 900MHz.
  • the second embodiment of the present invention provides a television signal processing apparatus, further including a high pass filter 14, a low noise amplifier 15, the high pass filter 14 and the duplexer 13
  • the output of the low pass filter 131 is connected, including a third order elliptical filter for filtering the low frequency signal; the low noise amplifier 15 is coupled to the output of the high pass filter 14 for amplifying the terrestrial television signal.
  • the high-pass filter 14 is a third-order elliptic filter, and its circuit structure diagram is as shown in FIG. 7, including electricity.
  • the high-pass filter 14 has a starting frequency of 170 MHz, and its main function is to filter out signals above 170 MHz by more than 20 dB, including antenna-powered DC and 22 kHz signals in DisEqc control.
  • the low noise amplifier 15 is connected to the output end of the high pass filter 14 for amplifying the terrestrial television signal.
  • the circuit structure diagram is shown in FIG. 8 and is designed by the BFG540W. Narration.
  • FIG. 9 is a signal simulation diagram processed by the high-pass filter 14 and the low-noise amplifier 15.
  • the noise figure of the two-stage system is NF1+(NF2-1)/G1, where NF1 is the noise figure of the first stage, NF2 is the noise figure of the second stage, and G1 is the gain of the first stage amplifier.
  • NF1 is the noise figure of the amplifier
  • NF2 is the noise figure of the tuner
  • G1 is the gain of the low noise amplifier.
  • the television signal processing apparatus further includes an impedance matching network 17 and a low noise amplifier 18, the impedance matching network 17 being comprised of microstrip lines; the low noise amplifier 18 for amplifying the satellite signals together with the impedance matching network.
  • the circuit junction diagram of the impedance matching network 17 and the low noise amplifier 18 is as shown in FIG. 10.
  • the impedance matching network is composed of a microstrip line and is composed of a microstrip line having a characteristic impedance of 48 ohms and a length of 800 mils.
  • the low noise amplifier is designed with BFG425W and is a general-purpose design. It will not be described here.
  • the scheme has a lower noise figure, and the performance is reflected in the lower receiving sensitivity of the ground signal receiving.
  • the television signal processing apparatus further includes: an unbalanced-balanced converter for converting the amplified terrestrial television signal or the single-ended signal of the satellite television signal into a differential signal for performing anti-interference processing. Its main function is to convert the amplified single-ended signal into a differential signal to enhance the anti-interference ability of the circuit of the present invention.
  • a third embodiment of the present invention provides a television set top box using the television signal receiving apparatus according to the first embodiment and the second embodiment of the present invention.
  • the working principle is the same as above, and details are not described herein.
  • the present invention provides a television signal processing device and a television set top box, which have the advantages of high gain, low noise figure, high isolation, good reflection loss, etc., and are simple in design and low in price. Its isolation of up to 40dB allows satellite signals and ground signals to be unaffected by each other. The insertion loss of useful signals in the passband is less than 2dB. It has strong anti-interference signal output, simplifying the design of the back-end circuit and providing high-current DC. Signal coupling, support for DisEqc2.0, and compatibility with high surge protection, with very good technical results.

Abstract

本发明提供了一种电视信号处理装置，包括电源模块、信号接收器、射频扼流器和双工器，所述电源模块用于向信号接收器、双工器提供电源，所述信号接收器用于接收卫星电视信号或地面电视信号，所述射频扼流器和电源模块相连，用于过滤地面电视信号或卫星电视信号，并控制电源模块向信号接收器供电，所述双工器用于将卫星电视信号和地面电视信号进行分离，分别输出接收的卫星电视信号和地面电视信号。本发明实施例提供的电视信号处理装置和电视机顶盒通过分离地面电视信号和卫星信号的方式，具有高增益、低噪声系统、高隔离度和良好的反射损耗等优势。

Description

一种电视信号处理的装置和电视机顶盒 【技术领域】
本发明涉及信号处理技术领域，特别涉及一种电视信号处理的装置和电视机顶盒。
【背景技术】
目前市场上为了提供更多的电视节目源，前端上常常将本地的一些地面电视信号和卫星信号混合到有线线缆中，这要求接收机需要在一个端口中接收所有的信号.并且相互不受干扰和影响的将存在于两种波段的信号分离出来，然后各自解调。而传统的接收方案则是接收机器中采用两个输入端口，分别对地面和卫星信号直接接收，如图1所示，这种方案用户需要将信号通过功分器分别接收到机器，而功分器则具有较大的插损，同时彼此的隔离度取决于功分器的质量。
【发明内容】
为了解决现有技术中存在的问题，本发明实施例提供了一种电视信号处理的装置和电视机顶盒。
本发明实施例提供的一种电视信号处理装置，包括电源模块、信号接收器、射频扼流器和双工器，
所述电源模块用于向信号接收器、双工器提供电源；
所述信号接收器用于接收卫星电视信号或地面电视信号；
所述射频扼流器和电源模块相连，用于过滤地面电视信号或卫星电视信号，并控制电源模块向信号接收器供电；
所述双工器用于将卫星电视信号和地面电视信号进行分离，分别输出接收的卫星电视信号和地面电视信号。
所述电源模块为LNB低噪块电源。
所述射频扼流器包括电容和电感，所述电感为空心绕线电感。
所述分工器进一步包括：低通滤波器和高通滤波器，所述低通滤波器将接收到地面电视信号分离并输出；所述高通滤波器用于将接收到的卫星电视信号分离并输出。
所述低通滤波器包括八阶椭圆滤波器，所述高通滤波器包括七阶椭圆滤波器。
所述电视信号处理装置进一步包括：高通滤波器、低噪声放大器，所述高通滤波器和所述双工器中的低通滤波器输出端相连，包括三阶椭圆滤波器，用于将低频信号进行过滤；所述低噪声放大器用于将地面电视信号进行放大。
所述电视信号处理装置进一步包括：阻抗匹配网络和低噪声放大器，所述阻抗匹配网络由微带线组成；所述低噪声放大器用于和阻抗匹配网络一起对卫星信号进行放大。
所述电视信号处理装置更进一步包括：不平衡-平衡转换器，用于将放大后的地面电视信号或卫星电视信号的单端信号转成差分信号，进行抗干扰处理。
本发明实施例还提供了一种采用上述电视信号接收装置的电视机顶盒。
与现有技术相比，本发明实施例提供的电视信号处理装置和电视机顶盒通过分离地面电视信号和卫星信号的方式，具有高增益、低噪声系统、高隔离度和良好的反射损耗等优势。
【附图说明】
图1是现有技术中的电视信号接收器结构图；
图2是本发明实施例一提供的一种电视信号处理装置的结构图；
图3是本发明实施例一提供的射频扼流器的电路结构图；
图4为本发明实施例一提供双工器的电路结构图；
图5为本发明实施例一提供的电视信号处理装置的信号仿真图；
图6为本发明实施例二提供的电视信号处理装置结构图；
图7为本发明实施例二提供的高通滤波器电路结构图；
图8为本发明实施例二提供的低噪声放大器电路结构图；
图9为本发明实施例二提供的电视信号处理装置的卫星电视信号仿真图。
图10为本发明实施例二提供的匹配网络和低噪声放大器电路结构图；
图11为本发明实施例二提供的电视信号处理装置的地面电视信号仿真图。
【具体实施方式】
为了使本发明的目的、技术方案及优点更加清楚明白，以下结合附图及实施例，对本发明进行进一步详细说明。应当理解，此处所描述的具体实施例仅仅用以解释本发明，并不用于限定本发明。
本发明实施例一提供了一种电视信号处理装置，包括电源模块10、信号接收器11、射频扼流器12和双工器13。
所述电源模块10用于向信号接收器11、双工器13提供电源；
所述信号接收器11用于接收卫星电视信号或地面电视信号；
所述射频扼流器12和电源模块10相连，用于过滤地面电视信号或卫星电视信号，并控制电源模块向信号接收器供电；
所述双工器13用于将卫星电视信号和地面电视信号进行分离，分别输出接收的卫星电视信号和地面电视信号。
所述电源模块10为LNB低噪块电源。
所述信号接收器11为卫星电视接收天线和地面电视接收线缆，都有现有技术中的内容，在这里不再赘述。
所述射频扼流器12用于阻隔地面电视信号和卫星电视信号，同时将电源供应到信号接收器的天线端，射频扼流器的电路结构图如图3所示，由LC电路组成包括电感L1和电容C6，电感采用空心绕线电感，优选的，它的参数为：匝数12圈，线圈半径2.2mm，长度5mm，线径0.4mm。由于本发明中的卫星电视信号和地面电视信号的频率范围较宽，为170MHz～2150MHz，因此射频扼流器中的电感必须具有高谐振点、高Q值、大感值等特点，同时为了具备较高的抗浪涌性能，电感必须具有大的额定电流特性。
所述双工器13进一步包括低通滤波器131和高通滤波器132，用于将接收到的电视信号进行分离，过滤出卫星电视信号和地面电视信号。
如图4所示，为该双工器13的电路结构图。图4中PORT1为信号输入端口，用于接收信号接收器接收到的电视信号；PORT2为高通滤波器滤波后的卫星电视信号输出端口；PORT3为低通滤波器滤波后的地面电视信号输出端口。
所述低通滤波器131由八阶椭圆滤波器组成，其截至频率为900MHz，包括L1、C7、C4、C15、C6、LC1、LC2、LC6，其中L1＝18nH，C7＝2.7pF，C4＝1.8pF，C15＝2.2pF，C6＝0.5pF。LC1：L＝6.8nH，C＝3.6pF；LC2：L＝9.1nH，C＝2.4pF；LC6：L＝9.1nH，C＝1.8pF。
所述高通滤波器132由七阶椭圆滤波器组成，其起始频率为1000MHz，包括C3、C2、C1、C5、LC3、LC4、LC5，其中C3＝1.8pF；C1＝2.2pF；C2＝2.2pF；C5＝6.8pF；LC3:L＝12nH,C＝3.3pF；LC4:L＝18nH,C＝1.8pF；LC5:L＝12nH,C＝6.8pF。
图5为仿真的S参数图，其中S(1,1)表述信号的反射性能，它衡量了信号的反射损耗性能，它越小越好，根据经验，系统的反射损耗小于6dB后，对性能影响较小，而本设计中则远远满足；S(2,1)则表示信号从PORT1输入，PORT2输出的信号频响，从图中可以看到在<900MHz，能够具有多达40dB以上的衰减，而在>950MHz的信号损失则很小，也就是说端口2的输出中，卫星信号损失很小，而地面信号则被衰减达40dB以上；S(3,1)则表示信号从PORT1输入，PORT3输出的信号频响，图中仿真图中显示<900MHz的信号损失很小，而>1000MHz的信号则衰减有40dB，也就是说端口3的输出中，地面信号损失很小，而卫星信号则被衰减达40dB以上。由上述仿真图可见，通过分工器后，卫星电视信号和地面电视信号被很好的进行了过滤和分离，达到了很好的过滤效果。
进一步的，如图6所示，本发明实施例二提供了一种电视信号处理装置，进一步包括高通滤波器14、低噪声放大器15，所述高通滤波器14和所述双工器13中的低通滤波器131输出端相连，包括三阶椭圆滤波器，用于将低频信号进行过滤；所述低噪声放大器15和高通滤波器14的输出端相连，用于将地面电视信号进行放大。
所述高通滤波器14为三阶椭圆滤波器，其电路结构图如图7所示，包括电 容C1，C5和LC6，其中C1＝47pF，C5＝18pF，LC6：L＝68nH，C＝47pF。该高通滤波器14的起始频率为170MHz，它的主要作用是将170MHz以下信号进行一个20dB以上的滤除，包括天线供电的直流和DisEqc控制中的22KHz信号。
所述低噪声放大器15和高通滤波器14的输出端相连，用于将地面电视信号进行放大，其电路结构图如图8所示，采用BFG540W设计，因设计部分为通用设计，在此不再赘述。
如图9所示为经过所述高通滤波器14和所述低噪声放大器15处理后的信号仿真图，图9中显示信号经过12dB增益之后，它具有反射损耗小于6dB，而信号在1G的衰减则多达20dB，而滤波器的插损性能则被低噪声系数的低噪声放大器15弥补，总体大于传统方案系统噪声系数：>3dB(功分器的理论插损)+高频头接收噪声(3.6dB)＝6.6dB，而本方案的系统噪声系数：>1.4dB(滤波器插损)+低噪声放大器噪声系数(1.6dB)+高频头噪声((3.6-1)/12)＝3.2dB。对比上式，可以看到本方案具有更低的噪声系数，在性能上体现就是在卫星信号接收上具有更低的接收灵敏度。备注：两级系统的噪声系数为NF1+(NF2-1)/G1,其中NF1为第一级的噪声系数，NF2则为第二级的噪声系数，G1为第一级放大器的增益，在本设计中，NF1则为放大器的噪声系数，NF2则为调谐器的噪声系数，G1为低噪声放大器的增益。
所述电视信号处理装置进一步包括：阻抗匹配网络17和低噪声放大器18，所述阻抗匹配网络17由微带线组成；所述低噪声放大器18用于和阻抗匹配网络一起对卫星信号进行放大。
所述阻抗匹配网络17和低噪声放大器18的电路结图如图10所示，所述阻抗匹配网络采用微带线组成，由特征阻抗为48ohm，长度为800mils的微带线组成。低噪声放大器采用BFG425W设计，为通用设计，在此不作赘述。
如图11所示，为经过阻抗匹配网络17和低噪声放大器18处理后的卫星电视信号的仿真图，图11中显示信号经过10dB增益之后，它具有反射损耗小于6dB，而信号在1G的衰减则多达30dB，而滤波器的插损性能则被低噪声系数的LNA弥补，总体大于传统方案系统噪声系数：>3dB(功分器的理论插损)+高频头 接收噪声(3.6dB)＝6.6dB，而本方案的系统噪声系数：>1.2dB(滤波器插损)+低噪声放大器噪声系数(2.1dB)+高频头噪声((3.6-1)/12)＝3.5dB，对比上式，可以看到本方案具有更低的噪声系数，在性能上体现就是在地面信号接收上具有更低的接收灵敏度。
更进一步的，所述电视信号处理装置更进一步包括：不平衡-平衡转换器，用于将放大后的地面电视信号或卫星电视信号的单端信号转成差分信号，进行抗干扰处理。它的主要功能是将放大后的单端信号转成差分信号，增强本发明电路的抗干扰能力。
本发明实施例三提供了一种采用本发明实施例一和实施例二所述电视信号接收装置的电视机顶盒，其工作原理同上，在此不作赘述。
综上所述，本发明提供一种电视信号处理装置和电视机顶盒，具有高增益、低噪声系数、高隔离度、良好的反射损耗等性能优势，同时设计简便，价格低廉。其高达40dB以上的隔离度，让卫星信号和地面信号彼此不受影响，对通带内的有用信号插损小于2dB，具有强的抗干扰信号输出，简化后端电路的设计，提供大电流直流信号耦合，支持DisEqc2.0，同时兼容高浪涌防护功能，具有非常好的技术效果。
以上所述仅为本发明的较佳实施例而已，并不用以限制本发明，凡在本发明的精神和原则之内所作的任何修改、等同替换和改进等，均应包含在本发明的保护范围之内。

Claims (9)

  1. 一种电视信号处理装置，其特征在于，包括电源模块、信号接收器、射频扼流器和双工器，
    所述电源模块用于向信号接收器、双工器提供电源；
    所述信号接收器用于接收卫星电视信号或地面电视信号；
    所述射频扼流器和电源模块相连，用于过滤地面电视信号或卫星电视信号，并控制电源模块向信号接收器供电；
    所述双工器用于将卫星电视信号和地面电视信号进行分离，分别输出接收的卫星电视信号和地面电视信号。
  2. 如权利要求1所述的电视信号处理装置，其特征在于，所述电源模块为LNB低噪块电源。
  3. 如权利要求1所述的电视信号处理装置，其特征在于，所述射频扼流器包括电容和电感，所述电感为空心绕线电感。
  4. 如权利要求1所述的电视信号处理装置，其特征在于，所述分工器进一步包括：低通滤波器和高通滤波器，所述低通滤波器将接收到地面电视信号分离并输出；所述高通滤波器用于将接收到的卫星电视信号分离并输出。
  5. 如权利要求3所述的电视信号处理装置，其特征在于，所述低通滤波器包括八阶椭圆滤波器，所述高通滤波器包括七阶椭圆滤波器。
  6. 如权利要求1或4所述的电视信号处理装置，其特征在于，所述电视信号处理装置进一步包括：高通滤波器、低噪声放大器，所述高通滤波器和所述双工器中的低通滤波器输出端相连，包括三阶椭圆滤波器，用于将低频信号进行过滤；所述低噪声放大器用于将地面电视信号进行放大。
  7. 如权利要求1所述的电视信号处理装置，其特征在于，所述电视信号处理装置进一步包括：阻抗匹配网络和低噪声放大器1，所述阻抗匹配网络由微带线组成；所述低噪声放大器1用于和阻抗匹配网络一起对卫星信号进行放大。
  8. 如权利要求1所述的电视信号处理装置，其特征在于，所述电视信号处理装置更进一步包括：不平衡-平衡转换器，用于将放大后的地面电视信号或卫 星电视信号的单端信号转成差分信号，进行抗干扰处理。
  9. 一种采用权利要求1至8任意一项电视信号接收装置的电视机顶盒。
PCT/CN2016/084256 2015-06-30 2016-06-01 一种电视信号处理的装置和电视机顶盒 WO2017000732A1 (zh)

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Publication number Priority date Publication date Assignee Title
CN104994322B (zh) * 2015-06-30 2018-09-04 深圳市九洲电器有限公司 一种电视信号处理的装置和电视机顶盒
CN109309855A (zh) * 2017-07-27 2019-02-05 国基电子（上海）有限公司 信号分离器及前端电路
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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1308458A (zh) * 2000-01-19 2001-08-15 索尼株式会社 卫星调谐器的输入电路
US20020119805A1 (en) * 2001-02-27 2002-08-29 Smith Andrew D. Chilled transceiver
CN1747353A (zh) * 2004-09-08 2006-03-15 阿尔卡特公司 乡村宽带混合式卫星/地面解决方案
US20070118859A1 (en) * 2005-10-19 2007-05-24 Sony Corporation Front-end module and television set
JP2010288244A (ja) * 2009-06-12 2010-12-24 Pixela Corp Ｌｎｂインターフェース回路
CN203180959U (zh) * 2013-03-12 2013-09-04 深圳市同洲电子股份有限公司 一种信号接收装置和数字电视终端
CN104994322A (zh) * 2015-06-30 2015-10-21 深圳市九洲电器有限公司 一种电视信号处理的装置和电视机顶盒

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2401498B (en) * 2003-05-07 2006-02-22 Zarlink Semiconductor Ltd Tuner
CN2810069Y (zh) * 2005-07-25 2006-08-23 武汉电信器件有限公司 一种电视信号光接收模块
CN102301731B (zh) * 2009-01-30 2014-05-07 汤姆森特许公司 机顶盒中组合家庭网络通信和广播接收的系统和方法
EP2862275B1 (en) * 2012-06-18 2021-06-16 InterDigital Madison Patent Holdings, SAS Apparatus and method for inserting electrical power or control signals into a diplexer circuit
CN104601134B (zh) * 2015-01-30 2018-05-01 深圳市九洲电器有限公司 信号分支电路及装置

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1308458A (zh) * 2000-01-19 2001-08-15 索尼株式会社 卫星调谐器的输入电路
US20020119805A1 (en) * 2001-02-27 2002-08-29 Smith Andrew D. Chilled transceiver
CN1747353A (zh) * 2004-09-08 2006-03-15 阿尔卡特公司 乡村宽带混合式卫星/地面解决方案
US20070118859A1 (en) * 2005-10-19 2007-05-24 Sony Corporation Front-end module and television set
JP2010288244A (ja) * 2009-06-12 2010-12-24 Pixela Corp Ｌｎｂインターフェース回路
CN203180959U (zh) * 2013-03-12 2013-09-04 深圳市同洲电子股份有限公司 一种信号接收装置和数字电视终端
CN104994322A (zh) * 2015-06-30 2015-10-21 深圳市九洲电器有限公司 一种电视信号处理的装置和电视机顶盒

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