CN212752437U - All-in-one tuner and radio frequency signal receiving system - Google Patents
All-in-one tuner and radio frequency signal receiving system Download PDFInfo
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- CN212752437U CN212752437U CN202021990274.7U CN202021990274U CN212752437U CN 212752437 U CN212752437 U CN 212752437U CN 202021990274 U CN202021990274 U CN 202021990274U CN 212752437 U CN212752437 U CN 212752437U
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Abstract
The utility model discloses an all-in-one tuner and radio frequency signal receiving system. The all-in-one tuner comprises at least two radio frequency input connectors, at least two radio frequency low-noise amplifying circuits, at least two power distribution circuits and at least two radio frequency processing modules, wherein the radio frequency input connectors are used for receiving radio frequency signals; the radio frequency low-noise amplifying circuit is used for amplifying the radio frequency signals input by the corresponding radio frequency input joint; the power distribution circuit is used for equally distributing the radio-frequency signals input by the corresponding radio-frequency low-noise amplifying circuit to at least two output terminals of the power distribution circuit; the radio frequency processing module is used for receiving a control instruction input by the external main control computer, amplifying a part of a designated frequency in the control instruction from one or at least two radio frequency signals input by the corresponding power distribution module and then converting the amplified part into an intermediate frequency signal to be output, so that the simultaneous reception of multiple paths of radio frequency signals of different television standards is realized, and the technical index of the all-in-one tuner can meet the specified requirement.
Description
Technical Field
The embodiment of the utility model provides a relate to radio frequency signal reception technical field, especially relate to a tuner and radio frequency signal receiving system unify more.
Background
With the continuous development of multimedia technology, the functions of the television receiving system are gradually improved, and the types of radio frequency signals that can be received by the television receiving system are more and more, such as ISDB-T digital television signals with an operating frequency range of 51MHz-860MHz, ISDB-S digital television signals with an operating frequency range of 950MHz-2150MHz, and (satellite/terrestrial wave 4KUHD/8K UHD) two-in-one high definition television signals with an operating frequency range of 950MHz-3220MHz/51MHz-860MHz, and so on.
In the prior art, a television receiving system usually adopts a one-path receiving mode, and the problem that technical indexes are difficult to meet the specified requirements easily occurs in the case of simultaneous multi-path receiving.
SUMMERY OF THE UTILITY MODEL
The utility model provides an unify tuner and radio frequency signal receiving system more to make the unification tuner more can reach the regulation requirement.
In a first aspect, an embodiment of the present invention provides an all-in-one tuner, including:
the radio frequency input connectors are used for receiving radio frequency signals, and each radio frequency input connector receives the radio frequency signals of different television standards respectively;
the radio frequency low-noise amplifying circuits are connected with the radio frequency input connectors in a one-to-one correspondence mode and used for amplifying radio frequency signals input by the corresponding radio frequency input connectors;
the power distribution circuits are connected with the radio frequency low noise amplification circuits in a one-to-one corresponding mode; the power distribution circuit comprises at least two output terminals, and is used for equally distributing the radio-frequency signals input by the corresponding radio-frequency low-noise amplifying circuit to the at least two output terminals;
the system comprises at least two radio frequency processing modules, a first radio frequency processing module and a second radio frequency processing module, wherein the at least two radio frequency processing modules comprise at least one first radio frequency processing module and at least one second radio frequency processing module; the first radio frequency processing module comprises at least two input ends, and the at least two input ends are respectively connected with one output end of different power distribution circuits; the second radio frequency processing module comprises an input end which is connected with an output end of the power distribution circuit; the radio frequency processing module is used for receiving a control command input by an external main control machine, amplifying a part of a specified frequency in the control command from one or at least two radio frequency signals input by the corresponding power distribution module, and converting the amplified part into an intermediate frequency signal for output.
In a second aspect, the present invention further provides a radio frequency signal receiving system, which includes the all-in-one tuner of the first aspect.
The embodiment of the utility model provides an all-in-one tuner includes at least two radio frequency input connectors, at least two radio frequency low noise amplifier circuit, at least two power distribution circuit and at least two radio frequency processing module, wherein, radio frequency input connector is used for receiving radio frequency signal, radio frequency low noise amplifier circuit is used for enlargiing the radio frequency signal that is input by corresponding radio frequency input connector, power distribution circuit is used for equalling divide equally to its at least two output terminal the radio frequency signal that is input by corresponding radio frequency low noise amplifier circuit, radio frequency processing module is used for receiving the control command that outside main control machine input, and from one or at least two radio frequency signals that are input by corresponding power distribution module, convert the part of specified frequency in the control command into intermediate frequency signal output after amplifying, realized the simultaneous reception of the radio frequency signal of multichannel different television standards, and because mutual noninterference between each way signal, the technical index of the all-in-one tuner can meet the specified requirement, and the all-in-one tuner has good performance and high sensitivity.
Drawings
Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments made with reference to the following drawings:
fig. 1 is a schematic structural diagram of an all-in-one tuner according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of another all-in-one tuner according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a radio frequency signal receiving system according to an embodiment of the present invention.
Detailed Description
To further illustrate the technical means and effects of the present invention adopted to achieve the objectives of the present invention, the following detailed description will be given, with reference to the accompanying drawings and preferred embodiments, to the specific embodiments, structures, features and effects of an all-in-one tuner and rf signal receiving system according to the present invention.
The embodiment of the utility model provides an all-in-one tuner, include:
the radio frequency input connectors are used for receiving radio frequency signals, and each radio frequency input connector receives the radio frequency signals of different television standards respectively;
the radio frequency low-noise amplifying circuits are connected with the radio frequency input connectors in a one-to-one correspondence mode and used for amplifying radio frequency signals input by the corresponding radio frequency input connectors;
the power distribution circuits are connected with the radio frequency low noise amplification circuits in a one-to-one corresponding mode; the power distribution circuit comprises at least two output terminals, and is used for equally distributing the radio-frequency signals input by the corresponding radio-frequency low-noise amplifying circuit to the at least two output terminals;
the system comprises at least two radio frequency processing modules, a first radio frequency processing module and a second radio frequency processing module, wherein the at least two radio frequency processing modules comprise at least one first radio frequency processing module and at least one second radio frequency processing module; the first radio frequency processing module comprises at least two input ends, and the at least two input ends are respectively connected with one output end of different power distribution circuits; the second radio frequency processing module comprises an input end which is connected with an output end of the power distribution circuit; the radio frequency processing module is used for receiving a control command input by an external main control machine, amplifying a part of a specified frequency in the control command from one or at least two radio frequency signals input by the corresponding power distribution module, and converting the amplified part into an intermediate frequency signal for output. In a second aspect, embodiments of the present invention further provide.
The embodiment of the utility model provides an all-in-one tuner includes at least two radio frequency input connectors, at least two radio frequency low noise amplifier circuit, at least two power distribution circuit and at least two radio frequency processing module, wherein, radio frequency input connector is used for receiving radio frequency signal, radio frequency low noise amplifier circuit is used for enlargiing the radio frequency signal that is input by corresponding radio frequency input connector, power distribution circuit is used for equalling divide equally to its at least two output terminal the radio frequency signal that is input by corresponding radio frequency low noise amplifier circuit, radio frequency processing module is used for receiving the control command that outside main control machine input, and from one or at least two radio frequency signals that are input by corresponding power distribution module, convert the part of specified frequency in the control command into intermediate frequency signal output after amplifying, realized the simultaneous reception of the radio frequency signal of multichannel different television standards, and because mutual noninterference between each way signal, the technical index of the all-in-one tuner can meet the specified requirement, and the all-in-one tuner has good performance and high sensitivity.
The above is the core idea of the present application, and the technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, under the premise that creative work is not done by ordinary skilled in the art, all other embodiments obtained all belong to the protection scope of the present invention.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be practiced in other embodiments that depart from the specific details disclosed herein, and one skilled in the art may readily devise many other varied embodiments that are not limited to the specific details disclosed herein.
Next, the present invention will be described in detail with reference to the schematic drawings, and in the detailed description of the embodiments of the present invention, for convenience of explanation, the schematic drawings showing the structure of the device are not partially enlarged according to the general scale, and the schematic drawings are only examples, which should not limit the scope of the present invention. In addition, the three-dimensional dimensions of length, width and height should be included in the actual fabrication.
Fig. 1 is a schematic structural diagram of an all-in-one tuner according to an embodiment of the present invention. The all-in-one tuner is used for receiving radio frequency signals of different television standards in a multiplexing mode. As shown in fig. 1, the all-in-one tuner 1 includes at least two rf input connectors 100, at least two rf low-noise amplifier circuits 200, at least two power distribution circuits 300, and at least two rf processing modules 400.
The rf input connector 100 is configured to receive rf signals, and each rf input connector 100 receives rf signals of different tv standards. The radio frequency low noise amplification circuits 200 are connected to the radio frequency input connectors 100 in a one-to-one correspondence manner, and the radio frequency low noise amplification circuits 200 are configured to amplify radio frequency signals input by the corresponding radio frequency input connectors 100. The power distribution circuit 300 is connected to the rf low-noise amplifier circuits 200 in a one-to-one correspondence manner, the power distribution circuit 300 includes at least two output terminals, and the power distribution circuit 300 is configured to equally distribute the rf signals input by the corresponding rf low-noise amplifier circuits 200 to the at least two output terminals.
The at least two rf processing modules 400 include at least one first rf processing module 401 and at least one second rf processing module 402, the first rf processing module 401 includes at least two input terminals, the at least two input terminals are respectively connected to one output terminal of different power distribution circuits 300, the second rf processing module 402 includes one input terminal, the input terminal is connected to one output terminal of one power distribution circuit 300, the rf processing module 400 is configured to receive a control command input by an external main controller, and amplify and convert a part of a designated frequency in the control command into an intermediate frequency signal for output from one or at least two rf signals input by the corresponding power distribution module.
It can be understood that the number of the rf input connectors 100, the number of the rf low-noise amplifying circuits 200 and the number of the power dividing circuits 300 are equal, each rf input connector 100 is connected to one rf low-noise amplifying circuit 200, and each rf low-noise amplifying circuit 200 is connected to one power divider. In this embodiment, the number of the rf input connectors 100 is at least two, that is, two or more than two, and since the rf signals received by the rf input connectors 100 are different, the number of the rf input connectors 100 can be set according to the type of the rf signals to be received in the practical application.
It should be noted that the first rf processing module 401 is connected to the multiple power distribution circuits 300, and is capable of receiving rf signals of multiple different television standards, optionally, the first rf processing module 401 may receive rf signals output by all the power distribution circuits 300, or, when the number of the power distribution circuits 300 is greater than or equal to 3, may receive rf signals output by some of the power distribution circuits 300 in the multiple power distribution circuits 300, for example, the number of the power distribution circuits 300 is 3, and the first rf processing module 401 receives rf signals output by two of the power distribution circuits 300, so as to form corresponding two-in-one high-definition television signal output. In addition, when the number of the first rf processing modules 401 is greater than or equal to 2, the power distribution circuits 300 connected to the rf processing modules 400 may be the same, partially the same, or completely different, and may be set according to actual needs, which is not limited in this embodiment.
It should be noted that the structure of the all-in-one tuner 1 in fig. 1 is only an example and not a limitation, and any scheme satisfying the structural and functional limitations of the all-in-one tuner 1 is within the protection scope of the present embodiment.
Referring to fig. 1, at least two rf processing modules 400 are connected to a main controller 500, and the main controller 500 decodes the if signal output by the rf processing modules 400 to play the program corresponding to each channel of signal.
Specifically, the automatic gain control end IF AGC, the intermediate frequency signal output end IF, the serial clock input end SCL, and the serial data input end SDA of the rf processing module 401 are respectively connected to corresponding ports of the main controller 500, and the control instruction sent by the main controller 500 to the rf processing module 401 includes an automatic gain control instruction transmitted through the automatic gain control end IF AGC, a clock signal transmitted through the serial clock input end SCL, and a frequency selection control instruction transmitted through the serial data input end SDA, where the frequency selection control instruction is used to designate an amplified frequency from the rf signal, and the automatic gain control instruction is used to control the amplified multiple.
The all-in-one tuner 1 provided by this embodiment includes at least two rf input connectors 100, at least two rf low-noise amplifying circuits 200, at least two power distribution circuits 300, and at least two rf processing modules 400, wherein the rf input connector 100 is configured to receive rf signals, the rf low-noise amplifying circuits 200 are configured to amplify the rf signals input by the corresponding rf input connectors 100, the power distribution circuits 300 are configured to equally distribute the rf signals input by the corresponding rf low-noise amplifying circuits 200 to at least two output terminals thereof, the rf processing modules 400 are configured to receive a control command input by the external main controller 500, and convert a part of the control command with a specified frequency into an intermediate frequency signal from one or at least two rf signals input by the corresponding power distribution modules, so as to implement simultaneous reception of multiple rf signals of different tv standards, and because each path of signal does not interfere with each other, the technical index of the all-in-one tuner 1 can meet the specified requirement, and the all-in-one tuner has good performance and high sensitivity.
Referring to fig. 1, the at least two rf input connectors 100 include a first rf input connector 101 and a second rf input connector 102, the at least two rf low-noise amplifier circuits 200 include a first rf low-noise amplifier circuit 201 and a second rf low-noise amplifier circuit 202, the at least two power distribution circuits 300 include a first power distribution circuit 301 and a second power distribution circuit 302, the first rf input connector 101, the first rf low-noise amplifier circuit 201, and the first power distribution circuit 301 are sequentially connected, and the second rf input connector 102, the second rf low-noise amplifier circuit 202, and the second power distribution circuit 302 are sequentially connected.
Alternatively, the first rf input connector 101 may receive rf signals in the ISDB-S standard and the second rf input connector 102 may receive rf signals in the ISDB-T standard.
With reference to fig. 1, the number of the rf processing modules 400 is 4, wherein the number of the first rf processing modules 401 is 1, the number of the second rf processing modules 402 is 3, and two input terminals of the first rf processing modules 401 are respectively connected to one output terminal of the first power distribution circuit 301 and one output terminal of the second power distribution circuit 302.
Optionally, as shown in fig. 1, the second rf processing module 402 includes an a second rf processing module 411 and two b second rf processing modules 412, an input end of the a second rf processing module 411 is connected to one output end of the first power distribution circuit 301, and an input end of the b second rf processing module 412 is connected to a first output end of the second power distribution circuit 302.
Fig. 2 is a schematic structural diagram of another all-in-one tuner according to an embodiment of the present invention. The structure of the all-in-one tuner 1 shown in fig. 2 is similar to that of the all-in-one tuner 1 shown in fig. 1, except that, in fig. 2, the second rf processing module 402 includes two first and second rf processing modules 411 and 412, an input end of the first and second rf processing modules 411 is connected to one output end of the first power distribution circuit 301, and an input end of the second rf processing module 412 is connected to a first output end of the second power distribution circuit 302.
Illustratively, the model of the first radio frequency low noise amplifying circuit 201 may be MCH4020, and the model of the second radio frequency low noise amplifying circuit 202 may be BFP 196W.
Optionally, the model of the first and second rf processing modules 411 and 412 may be RDA5815M and SI2151, respectively.
In this embodiment, the model of the first rf processing module 401 may be E0001.
Illustratively, the power distribution circuit 300 is comprised of a resistor, a capacitor, and an inductor.
The working principle of the all-in-one tuner is described in detail below by taking an embodiment as an example:
1. structure of all-in-one tuner:
as shown in fig. 1, the all-in-one tuner 1 includes two rf input connectors 100, two rf low-noise amplifier circuits 200, two power distribution circuits 300, and four rf processing modules 400, where the two rf input connectors 100 include a first rf input connector 101 and a second rf input connector 102, the two rf low-noise amplifier circuits 200 include a first rf low-noise amplifier circuit 201 and a second rf low-noise amplifier circuit 202, the two power distribution circuits 300 include a first power distribution circuit 301 and a second power distribution circuit 302, the first rf input connector 101, the first rf low-noise amplifier circuit 201, and the first power distribution circuit 301 are sequentially connected, the second rf input connector 102, the second rf low-noise amplifier circuit 202, and the second power distribution circuit 302 are sequentially connected, the first rf input connector 101 receives an rf signal using ISDB-S standard, the second rf input connector 102 receives an rf signal using ISDB-T standard, the number of the rf processing modules 400 is 4, wherein the number of the first rf processing modules 401 is 1, the number of the second rf processing modules 402 is 3, two input terminals of the first rf processing modules 401 are respectively connected to one output terminal of the first power distribution circuit 301 and one output terminal of the second power distribution circuit 302, the second rf processing modules 402 include an a second rf processing module 411 and two b second rf processing modules 412, an input terminal of the a second rf processing module 411 is connected to one output terminal of the first power distribution circuit 301, an input terminal of the b second rf processing module 412 is connected to a first output terminal of the second power distribution circuit 302, specifically, 2-way ISDB-S, a five-in-one tuner for 1-path ISDB-T and 1-path (satellite/ground wave/4K UHD/8K UHD) two-in-one high-definition television programs.
2. The working principle of the all-in-one tuner with the structure in 1 is as follows:
first, a television signal (RF) from a ground wave is fed through a first radio frequency input connector 101, amplified by a first radio frequency low noise amplifier circuit 201, and input to a first power distribution circuit 301, and the first power distribution circuit 301 divides the radio frequency signal into two paths and inputs the two paths to a first radio frequency processing module 401 and a second radio frequency processing module 402 respectively. The corresponding rf processing module 400 converts the rf signal into an Intermediate Frequency (IF) signal that can be identified by the main controller 500, the rf processing module 400 and the main controller 500 are connected to corresponding ports, and the main controller 500 can control the rf processing module 400 through the I2C bus and the IF, thereby achieving the effect of watching different channels at will.
Second, a television signal (RF) from a satellite is fed through the second RF input connector 102, amplified by the second RF low-noise amplifier circuit 202, and then input to the first power distribution circuit 302, and the second power distribution circuit 302 divides the RF signal equally into three paths and inputs the three paths to the first RF processing module 401 and the two second RF processing modules 402, respectively. The corresponding rf processing module 400 converts the rf signal into an Intermediate Frequency (IF) signal that can be identified by the main controller 500, the rf processing module 400 and the main controller 500 are connected to corresponding ports, and the main controller 500 can control the rf processing module 400 through the I2C bus and the IFAGC, IF, to achieve the effect of watching different channels at will.
Fig. 3 is a schematic structural diagram of a radio frequency signal receiving system according to an embodiment of the present invention. As shown in fig. 3, the rf signal receiving system 2 includes an all-in-one tuner 1 according to any embodiment of the present invention. The embodiment of the utility model provides a radio frequency signal receiving system 2 includes the utility model discloses the all-in-one tuner 1 of arbitrary embodiment has the utility model discloses the technical characteristics of all-in-one tuner 1 that arbitrary embodiment provided, it has the same or corresponding beneficial effect of all-in-one tuner 1 that it includes, and it is no longer repeated here.
It should be noted that the foregoing is only a preferred embodiment of the present invention and the technical principles applied. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious modifications, rearrangements, combinations and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail with reference to the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the scope of the present invention.
Claims (11)
1. An all-in-one tuner, comprising:
the radio frequency input connectors are used for receiving radio frequency signals, and each radio frequency input connector receives the radio frequency signals of different television standards respectively;
the radio frequency low-noise amplifying circuits are connected with the radio frequency input connectors in a one-to-one correspondence mode and used for amplifying radio frequency signals input by the corresponding radio frequency input connectors;
the power distribution circuits are connected with the radio frequency low noise amplification circuits in a one-to-one corresponding mode; the power distribution circuit comprises at least two output terminals, and is used for equally distributing the radio-frequency signals input by the corresponding radio-frequency low-noise amplifying circuit to the at least two output terminals;
the system comprises at least two radio frequency processing modules, a first radio frequency processing module and a second radio frequency processing module, wherein the at least two radio frequency processing modules comprise at least one first radio frequency processing module and at least one second radio frequency processing module; the first radio frequency processing module comprises at least two input ends, and the at least two input ends are respectively connected with one output end of different power distribution circuits; the second radio frequency processing module comprises an input end which is connected with an output end of the power distribution circuit; the radio frequency processing module is used for receiving a control command input by an external main control machine, amplifying a part of a specified frequency in the control command from one or at least two radio frequency signals input by the corresponding power distribution module, and converting the amplified part into an intermediate frequency signal for output.
2. The all-in-one tuner as claimed in claim 1, wherein the at least two rf input connectors comprise a first rf input connector and a second rf input connector, the at least two rf low-noise amplifying circuits comprise a first rf low-noise amplifying circuit and a second rf low-noise amplifying circuit, and the at least two power distribution circuits comprise a first power distribution circuit and a second power distribution circuit;
the first radio frequency input joint, the first radio frequency low-noise amplifying circuit and the first power distribution circuit are sequentially connected, and the second radio frequency input joint, the second radio frequency low-noise amplifying circuit and the second power distribution circuit are sequentially connected.
3. The all-in-one tuner as claimed in claim 2, wherein the first rf input connector receives an rf signal in an ISDB-S standard, and the second rf input connector receives an rf signal in an ISDB-T standard.
4. The all-in-one tuner according to claim 2, wherein the number of the rf processing modules is 4, wherein the number of the first rf processing modules is 1, and the number of the second rf processing modules is 3;
two input ends of the first radio frequency processing module are respectively connected with one output end of the first power distribution circuit and one output end of the second power distribution circuit.
5. The all-in-one tuner as claimed in claim 4, wherein the second RF processing module comprises a first second RF processing module and two second RF processing modules;
the input end of the first radio frequency processing module is connected with one output end of the first power distribution circuit, and the input end of the second radio frequency processing module is connected with the first output end of the second power distribution circuit.
6. The all-in-one tuner as claimed in claim 4, wherein the second RF processing module comprises two A second RF processing modules and B second RF processing modules;
the input end of the first radio frequency processing module is connected with one output end of the first power distribution circuit, and the input end of the second radio frequency processing module is connected with the first output end of the second power distribution circuit.
7. The all-in-one tuner as claimed in claim 3, wherein the first radio frequency low noise amplifying circuit is of the type MCH4020, and the second radio frequency low noise amplifying circuit is of the type BFP 196W.
8. The all-in-one tuner as claimed in claim 5 or 6, wherein the first and second RF processing modules have model number RDA5815M, and the second RF processing module has model number SI 2151.
9. The all-in-one tuner as claimed in claim 4, wherein the first RF processing module has a model number E0001.
10. The all-in-one tuner as claimed in claim 1, wherein the power distribution circuit is composed of a resistor, a capacitor and an inductor.
11. A radio frequency signal receiving system comprising the all-in-one tuner of any one of claims 1 to 10.
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| CN202021990274.7U CN212752437U (en) | 2020-09-11 | 2020-09-11 | All-in-one tuner and radio frequency signal receiving system |
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