CN102694589A - Tuner, receiver and satellite receiving system - Google Patents
Tuner, receiver and satellite receiving system Download PDFInfo
- Publication number
- CN102694589A CN102694589A CN2012101608123A CN201210160812A CN102694589A CN 102694589 A CN102694589 A CN 102694589A CN 2012101608123 A CN2012101608123 A CN 2012101608123A CN 201210160812 A CN201210160812 A CN 201210160812A CN 102694589 A CN102694589 A CN 102694589A
- Authority
- CN
- China
- Prior art keywords
- receiver
- communication
- tuner
- control circuit
- key
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Abstract
The invention provides a tuner, a receiver and a satellite receiving system. The tuner comprises a low noise amplifier, a filter, a local oscillating circuit, a mixer, an intermediate frequency amplifying circuit and a receiver communication control circuit. Satellite signals received by an antenna are coupled through a probe and amplified in the low noise amplifier. Frequency band needed is selected by the filter. The satellite signals output by the filter and oscillating signals output by the local oscillating circuit are mixed in the mixer. Intermediate signals output by the mixer are amplified in the intermediate frequency amplifying circuit and output to the receiver through a coaxial cable. The receiver communication control circuit receives power supply from the receiver through the coaxial cable and supplies power to the low noise amplifier, the local oscillating circuit and the intermediate frequency amplifying circuit. The receiver communication control circuit is used for receiving first communication verification when the receiver powers up and/or after the receiver powers up. When the first communication verification fails, power supply of the receiver communication control circuit is cut off. Accordingly, security of satellite signal receiving is enhanced.
Description
Technical field
The application relates to technical field of satellite communication, particularly relates to a kind of tuner, receiver and satellite receiving system.
Background technology
Because have that message capacity is big, area coverage is wide, long transmission distance, do not receive advantages such as geographical conditions restriction and communication mode be flexible, satellite communication network broadcasting, TV and speech etc. professional aspect, favored by operator.For example, the satellite digital distribution is exactly to utilize satellite network directly to deliver digital products such as phonotape and videotape, electron reading, recreation, software, practical information to the user terminal with reception and playing function.
Because satellite network transmits data aloft through radio wave; Nearly all satellite communication user in the satellite beams overlay area can both touch these data; Just can obtain the data of being transmitted as long as have identical receive frequency, this is big potential safety hazard in the satellite communication.So the satellite digital distribution security requirement that distribution receives to satellite digital particularly will avoid the user to use the digital distribution receiving system to remove to receive other satellite-signals than higher.
The major function of existing digital distribution receiving system be with amplify from satellite-signal, after the frequency conversion; Be sent to receiver user; Concrete device range finishes from antenna to receiver delivery outlet, comprises antenna, tuner (tuner, Low Noise Block), receiver or the like.
Like this, use existing digital distribution receiving system, if change receiver, then the user just can use the professional antenna of digital distribution to receive other satellite-signals; Perhaps, if change other key component in the digital distribution receiving system, the user also can receive other satellite-signals; These all badly influence the fail safe that the satellite digital distribution receives.
In a word, need the urgent technical problem that solves of those skilled in the art to be exactly: how can improve the fail safe that the satellite digital distribution receives.
Summary of the invention
The application's technical problem to be solved provides a kind of tuner, receiver and satellite receiving system, can improve the fail safe that satellite-signal receives.
In order to address the above problem, the application discloses a kind of tuner, it is characterized in that, comprises low noise amplifier, filter, local oscillation circuit, frequency mixer, IF amplifier circuit and receiver communication control circuit;
Wherein, The satellite-signal that antenna receives is after probe is coupled into said low noise amplifier amplification; Select required frequency range by said filter; The oscillator signal of the satellite-signal of said filter output and local oscillation circuit output mixes at said frequency mixer, and the intermediate-freuqncy signal of said frequency mixer output outputs to receiver through coaxial wire after said IF amplifier circuit amplifies;
Said receiver communication control circuit; It accepts the power supply of said receiver through said coaxial cable; Simultaneously said low noise amplifier, local oscillation circuit and IF amplifier circuit are supplied power; Be used for accepting when receiver powers on and/or after powering on the first communication checking of receiver, when the first communication authentication failed, its power supply is cut off.
Preferably; Said receiver communication control circuit; Also be used for when first communication is verified successfully, accepting the power supply of said receiver; Through said coaxial cable said receiver is carried out the second communication checking when powering on and/or after powering on, and when the second communication authentication failed, cut off power supply said low noise amplifier, local oscillation circuit and IF amplifier circuit.
Preferably, said receiver communication control circuit comprises:
Preset module is used to preset first key and second key;
First receiver module is used to receive first enciphered data, and wherein, said first enciphered data is utilized said first key that first random number is encrypted by receiver and obtained;
First encrypting module is used to utilize said second key that said first enciphered data is encrypted, and obtains second enciphered data; And
First returns module; Be used for said second enciphered data is returned to receiver, utilize said second key and first key that said second enciphered data is deciphered successively by receiver and obtain second random number, and compare first random number and second random number; If it is identical; First communication of then thinking verify successfully, if difference is then thought first authentication failed of communicating by letter.
Preferably, said receiver communication control circuit also comprises:
First deciphering module is used to utilize said first key that said first enciphered data is deciphered, and obtains the 3rd random number;
Second receiver module is used to receive second communication checking request, and wherein, said second communication checking request is initiated when first communication is verified successfully by receiver;
Second encrypting module is used for when receiving said second communication checking request, utilizing said second key that said the 3rd random number is encrypted and obtaining the 3rd enciphered data;
Second returns module, is used for said the 3rd enciphered data is returned to receiver;
The 3rd receiver module is used to receive the 4th enciphered data, and wherein, said the 4th enciphered data is utilized said first key that said the 3rd enciphered data is encrypted by receiver and obtained;
The 3rd deciphering module is used for utilizing successively said first key and second key that said the 4th enciphered data is deciphered and obtains the 4th random number;
The second communication authentication module is used for comparison the 3rd random number and the 4th random number, if identical, thinks that then second communication verifies successfully, if different, then thinks the second communication authentication failed.
Preferably, said tuner also comprises:
The biasing power supply circuits; The one of which end links to each other with said receiver communication control circuit; In the other end and said low noise amplifier, local oscillation circuit and the IF amplifier circuit one or more links to each other; Be used to accept the power supply of said receiver communication control circuit, simultaneously in low noise amplifier, local oscillation circuit and the IF amplifier circuit one or more stated that links to each other supplied power;
At this moment; Said receiver communication control circuit; Said low noise amplifier, local oscillation circuit and IF amplifier circuit are supplied power, perhaps, to not supplying power in said low noise amplifier, local oscillation circuit and the IF amplifier circuit with said biasing power supply circuits link to each other.
On the other hand; Disclosed herein as well is a kind of receiver, comprise the tuner communication control circuit, it is supplied power to tuner through coaxial cable; Be used for when powering on and/or the first communication checking is carried out to tuner in the back that powers on, and when the first communication authentication failed, cut off power supply tuner.
Preferably; Said tuner communication control circuit; Also be used for when first communication is verified successfully, tuner being supplied power; When powering on and/or the back that powers on accept the second communication checking of tuner through said coaxial cable, cut off tuner by tuner when the second communication authentication failed in the power supply of low noise amplifier, local oscillation circuit and IF amplifier circuit.
Preferably, said tuner communication control circuit comprises:
Preset module is used to preset first key and second key;
First encrypting module is used to utilize said first key that first random number is encrypted and obtains first enciphered data;
First sending module is used for said first enciphered data is sent to tuner, utilizes said second key that said first enciphered data is encrypted by tuner, obtains second enciphered data;
First receiver module is used to receive said second enciphered data;
First deciphering module is used for utilizing successively said second key and first key that said second enciphered data is deciphered and obtains second random number; And
Authentication module is used for comparison first random number and second random number, if identical, first communication of then thinking verify successfully, if difference is then thought first authentication failed of communicating by letter.
On the one hand, disclosed herein as well is a kind of satellite receiving system again, comprise antenna, tuner and receiver, said tuner comprises low noise amplifier, filter, local oscillation circuit, frequency mixer, IF amplifier circuit and receiver communication control circuit;
Wherein, The satellite-signal that said antenna receives is after probe is coupled into said low noise amplifier amplification; Select required frequency range by said filter; The oscillator signal of the satellite-signal of said filter output and local oscillation circuit output mixes at said frequency mixer, and the intermediate-freuqncy signal of said frequency mixer output outputs to receiver through coaxial wire after said IF amplifier circuit amplifies;
Said receiver communication control circuit; It accepts the power supply of said receiver through said coaxial cable; Simultaneously said low noise amplifier, local oscillation circuit and IF amplifier circuit are supplied power; Be used for accepting when receiver powers on and/or after powering on the first communication checking of receiver, when the first communication authentication failed, its power supply is cut off;
Said receiver comprises the tuner communication control circuit; It is supplied power to said receiver communication control circuit through coaxial cable; Be used for when powering on and/or the first communication checking is carried out to said receiver communication control circuit in the back that powers on, and when the first communication authentication failed, cut off power supply tuner.
Preferably, said tuner communication control circuit also is used for when first communication is verified successfully, said receiver communication control circuit being supplied power;
Said receiver communication control circuit; Also be used for when first communication is verified successfully, accepting the power supply of said receiver; Through said coaxial cable said receiver is carried out the second communication checking when powering on and/or after powering on, and when the second communication authentication failed, cut off power supply said low noise amplifier, local oscillation circuit and IF amplifier circuit.
Compared with prior art, the application has the following advantages:
At first; The application is according to the first communication checking of receiver to tuner; The main purpose of the said first communication checking is to judge whether tuner is replaced, if be replaced, then receiver can in time cut off the power supply to the receiver communication control circuit; Because the power supply source of the active devices such as low noise amplifier, local oscillation circuit and IF amplifier circuit in the tuner is from the receiver communication control circuit, these active devices all can not be worked under off-position; Therefore, when the first communication checking showed that tuner is replaced, receiver can in time cut off the power supply to tuner; And under off-position; The inner active device of tuner is idle, so tuner can not exported satellite-signal to receiver, this just can realize being in off position through the whole digital distribution receiving system of mutual control; Avoid the user to use the digital distribution receiving system to remove to receive other satellite-signals, thereby can effectively improve the fail safe that the satellite digital distribution receives.
Whether secondly, when first communication was verified successfully, said receiver communication control circuit can also carry out the second communication checking to receiver, and the active device of tuner inside is supplied power according to corresponding second communication checking result control; Like this, verify and show that successfully tuner is not replaced, and the second communication checking shows when receiver is replaced that in time cut-out is to the power supply of tuner inside active device in first communication; Though the receiver communication control circuit was accepted the power supply of receiver and is in power supply state when first communication was verified successfully; But cause the inner active device cisco unity malfunction of tuner owing in time cut off power supply to tuner inside active device; Therefore; Tuner can not exported satellite-signal to receiver; This just can guarantee that whole digital distribution receiving system is in off position under the situation that receiver is replaced through mutual control, avoids the user to use the digital distribution receiving system to remove to receive other satellite-signals, thereby can effectively improve the fail safe that the satellite digital distribution receives.
Description of drawings
Fig. 1 is the structure chart of a kind of tuner embodiment 1 of the application;
Fig. 2 is the flow chart of a kind of first communication checking of the application;
Fig. 3 is the structure chart of a kind of tuner embodiment 2 of the application;
Fig. 4 is the flow chart of a kind of first communication checking of the application and second communication checking;
Fig. 5 is the structure chart of a kind of satellite receiving system embodiment of the application.
Embodiment
For above-mentioned purpose, the feature and advantage that make the application can be more obviously understandable, the application is done further detailed explanation below in conjunction with accompanying drawing and embodiment.
The application inventor finds under study for action; Changing receiver the user perhaps changes under the situation of other key physical device in the digital distribution receiving system; If can make whole digital distribution receiving system be in off position, then the user just can not use other other satellite-signals of part of not changing reception in the digital distribution receiving system; Also promptly, only if the user changes whole digital distribution receiving system, otherwise the user can not use the part physical device in the digital distribution receiving system to receive other satellite-signals, therefore, can improve the fail safe that the satellite digital distribution receives.
But, physical devices such as antenna, tuner, receiver in the existing digital distribution receiving system, being in the present technique field is general physical device, their function is a data processing function.Like this, for a certain physical device in the existing digital distribution receiving system, whether be unknown to other key physical device in the digital distribution receiving system if being replaced, and it just receives the data after data, deal with data and output are handled simply.For example, tuner mainly is responsible for satellite-signal in the conversion of physical layer and export to receiver, and receiver then mainly is transformed into logic aspect (analog-to-digital conversion) etc. with the satellite-signal of tuner output from physical layer.Like this, for the general physical device that only possesses at present data processing function, how to learn that whether other key physical device is replaced is a difficult point in the present technique field.
Even so; Even known other key physical device of a certain physical device is replaced in the digital distribution receiving system; How making whole digital distribution receiving system be in off position also is a difficult point to those skilled in the art; Because physical device is general physical device in the digital distribution receiving system, it just realizes some data processing functions simply.
Characteristics of above-mentioned general physical device are work uncontrollability and work independence; If can apply control to these general physical devices; Make it become the special-purpose physical device that possesses work controllability and interactivity; So, when known a certain physical device is replaced, can be in off position through the whole digital distribution receiving system of mutual control.
Usually; Key physical device in the satellite receiving system only comprises tuner and receiver; If the communication checking shows that tuner or receiver are replaced, then can control whole digital distribution receiving system and be in off position, like this; Only if change whole satellite receiving system, otherwise whole satellite receiving system can't be worked.
The application inventor has noticed this point, has therefore creatively proposed one of core idea of the application, and also promptly, according to the first communication checking of receiver to tuner, whether control supplies power to tuner; Because receiver connects through coaxial cable tuner is supplied power; Like this, when the first communication checking showed that tuner is replaced, receiver can in time cut off the power supply to tuner; And under off-position; The inner active device (like low noise amplifier, local oscillation circuit and IF amplifier circuit etc.) of tuner is idle, and tuner can not exported satellite-signal to receiver, and this just can realize being in off position through the whole digital distribution receiving system of mutual control; Avoid the user to use the digital distribution receiving system to remove to receive other satellite-signals, thereby can effectively improve the fail safe that the satellite digital distribution receives.
According to above-mentioned core idea, the application improves general tuner of the prior art and receiver, has proposed a kind of special-purpose tuner, special receiver and satellite receiving system, below provides respective embodiments respectively.
With reference to Fig. 1, show the structure chart of a kind of tuner embodiment 1 of the application, specifically can comprise low noise amplifier 101, filter 102, local oscillation circuit 103, frequency mixer 104, IF amplifier circuit 105 and receiver communication control circuit 106;
Wherein, The satellite-signal that antenna receives is after probe is coupled into said low noise amplifier 101 amplifications; Select required frequency range by said filter 102; The oscillator signal of the satellite-signal of said filter 102 outputs and local oscillation circuit 103 outputs mixes at said frequency mixer 104, and the intermediate-freuqncy signal of said frequency mixer 104 outputs outputs to receiver through coaxial wire after said IF amplifier circuit 105 amplifies;
Said receiver communication control circuit 106; It accepts the power supply of said receiver through said coaxial cable; Simultaneously said low noise amplifier 101, local oscillation circuit 103 and IF amplifier circuit 105 are supplied power; Be used for accepting when receiver powers on and/or after powering on the first communication checking of receiver, when the first communication authentication failed, its power supply is cut off.
Tuner among the application embodiment can be positioned at various satellite receiving systems such as satellite digital distribution receiving system, in order to the fail safe of raising satellite-signal reception, and does not influence the original stability of tuner, fail safe, ease for use.
When being used for receiving satellite signal, desire to make noise factor very low, the low noise amplifier 101 in the tuner can preferably carry out 2～3 grades of amplifications; In concrete the realization, can make amplifier tube adopt high-velocity electrons mobility transistors (HEMT, High Electron Mobility Transistor) device, match circuit adopts minimal noise coefficients match mode.
Suppose acceptance criteria Ku frequency band signals, so, can adopt the logical frequency range of band of 11.7GHz～12.2GHz; Because the Ku frequency band signals generally adopts the down-conversion pattern, its interference to low side is stronger, and this just requires the mirror image of filter 102 to suppress and will get well; In addition, because the circuit of Ku frequency band signals concentrates in the little cavity usually, its volume to filter has requirement, so in the application embodiment, preferably, can select small-sized interdigitated microstrip filter for use; Further, on the material of design Rogers (Rogers), also should satisfy the spacing of microstrip line and the requirement that line-spacing is very little and processing technology is good, bring difficulty with the exempt from customs examination debugging.In a kind of applying examples of the application, an index of filter 102 is: < 3dB, the band standing internal wave is than < 1.5, mirror image suppresses greater than 44dB for inband flatness.
Below introduce receiver communication control circuit 106 in detail; The application's receiver communication control circuit 106 mainly possesses two functions: function one, externally accept the power supply of said receiver through said coaxial cable; And, accept the first communication checking of receiver based on mutual communication; Function two, internally said low noise amplifier 101, local oscillation circuit 103 and IF amplifier circuit 105 are supplied power.
The main purpose of the said first communication checking is to judge whether tuner is replaced; If be replaced; Then receiver can in time cut off the power supply to receiver communication control circuit 106; Because the power supply source of the active devices such as low noise amplifier 101, local oscillation circuit 103 and IF amplifier circuit 105 in the tuner is from receiver communication control circuit 106, these active devices all can not be worked under off-position; Therefore, when the first communication checking showed that tuner is replaced, receiver can in time cut off the power supply to tuner; And under off-position; The inner active device of tuner is idle, so tuner can not exported satellite-signal to receiver, this just can realize being in off position through the whole digital distribution receiving system of mutual control; Avoid the user to use the digital distribution receiving system to remove to receive other satellite-signals, thereby can effectively improve the fail safe that the satellite digital distribution receives.
In concrete the realization, the mutual communication between tuner and the receiver should meet common apparatus standard, puppy parc, so that promote.
In a kind of preferred embodiment of the application, a kind of example of puppy parc is provided, correspondingly, said receiver communication control circuit 106 may further include:
Preset module is used to preset first key and second key;
First receiver module is used to receive first enciphered data, and wherein, said first enciphered data is utilized said first key that first random number is encrypted by receiver and obtained;
First encrypting module is used to utilize said second key that said first enciphered data is encrypted, and obtains second enciphered data; And
First returns module; Be used for said second enciphered data is returned to receiver, utilize said second key and first key that said second enciphered data is deciphered successively by receiver and obtain second random number, and compare first random number and second random number; If it is identical; First communication of then thinking verify successfully, if difference is then thought first authentication failed of communicating by letter.
With reference to Fig. 2, show the flow chart of a kind of first communication checking of the application, specifically can comprise:
Built-in 2 64 key A, B in step 201, receiver and the tuner, wherein, in 64 preceding 56 effectively, back 8 are used for parity check bit;
In concrete the realization; Those skilled in the art can adopt DES (data encryption standard; DataEncryption Standard), 3DES (Triple DES), IDEA (IDEA; International Data Encryption Algorithm), AES various algorithms such as (Advanced Encryption Standard AdvancedEncryption Standard) carry out encryption and decryption, the application does not limit concrete enciphering and deciphering algorithm.
In addition, 64 key is as an example among Fig. 2, in fact; Those skilled in the art can adopt the key of other figure place according to AES; Use 128 keys that very strong fail safe is provided like IDEA, or the like, the application does not limit the figure place of concrete key yet.
Among the application embodiment; The said low noise amplifier of 106 pairs of said receiver communication control circuits 101, local oscillation circuit 103 and IF amplifier circuit 105 are supplied power; The power supply here can be direct power supply; Also can be indirect power supply, the direct power supply here be directly to link to each other with an active device and supply power, and power supply is that said receiver communication control circuit 10 links to each other with an active device through indirect power supply circuits indirectly.
In a kind of preferred embodiment of the application, a kind of example of indirect power supply is provided, correspondingly, said tuner can also comprise:
The biasing power supply circuits; The one of which end links to each other with said receiver communication control circuit; In the other end and said low noise amplifier 101, local oscillation circuit 103 and the IF amplifier circuit 105 one or more links to each other; Be used to accept the power supply of said receiver communication control circuit, simultaneously in low noise amplifier, local oscillation circuit and the IF amplifier circuit one or more stated that links to each other supplied power;
At this moment; Said receiver communication control circuit 106; Can supply power to said low noise amplifier 101, local oscillation circuit 103 and IF amplifier circuit 105; Perhaps, can be to not supplying power in said low noise amplifier 101, local oscillation circuit 103 and the IF amplifier circuit 105 with said biasing power supply circuits link to each other.
With reference to Fig. 3; Show the structure chart of a kind of tuner embodiment 2 of the application; Its received RF input; And it is carried out intermediate frequency export, specifically can comprise low noise amplifier, filter, local oscillation circuit, frequency mixer, IF amplifier circuit, biasing power supply circuits and receiver communication control circuit; Wherein, said receiver communication control circuit directly links to each other so that it is directly supplied power with local oscillation circuit, IF amplifier circuit and biasing power supply circuits, and the biasing power supply circuits link to each other so that it is supplied power with low noise amplifier.
In the tuner shown in Figure 3, the receiver communication control circuit is supplied power to low noise amplifier through the biasing power supply circuits indirectly.In fact, the receiver communication control circuit can also be supplied power to local oscillation circuit or IF amplifier circuit through the biasing power supply circuits indirectly indirectly, and the application does not limit it.
The application also provides a kind of tuner embodiment 3, specifically can comprise low noise amplifier, filter, local oscillation circuit, frequency mixer, IF amplifier circuit and receiver communication control circuit;
Wherein, The satellite-signal that antenna receives is after probe is coupled into said low noise amplifier amplification; Select required frequency range by said filter; The oscillator signal of the satellite-signal of said filter output and local oscillation circuit output mixes at said frequency mixer, and the intermediate-freuqncy signal of said frequency mixer output outputs to receiver through coaxial wire after said IF amplifier circuit amplifies;
Said receiver communication control circuit; It accepts the power supply of said receiver through said coaxial cable; Simultaneously said low noise amplifier, local oscillation circuit and IF amplifier circuit are supplied power; Be used for accepting when receiver powers on and/or after powering on the first communication checking of receiver, when the first communication authentication failed, its power supply is cut off;
Said receiver communication control circuit; Also be used for when first communication is verified successfully, accepting the power supply of said receiver; Through said coaxial cable said receiver is carried out the second communication checking when powering on and/or after powering on, and when the second communication authentication failed, cut off power supply said low noise amplifier, local oscillation circuit and IF amplifier circuit.
Embodiment 3 is with the main distinction of embodiment 1; When first communication is verified successfully; Whether said receiver communication control circuit can also carry out the second communication checking according to receiver, and the active device of tuner inside is supplied power according to corresponding second communication checking result control; Like this, verify and show that successfully tuner is not replaced, and the second communication checking shows when receiver is replaced that in time cut-out is to the power supply of tuner inside active device in first communication; Though the receiver communication control circuit was accepted the power supply of receiver and is in power supply state when first communication was verified successfully; But cause the inner active device cisco unity malfunction of tuner owing in time cut off power supply to tuner inside active device; Therefore; Tuner can not exported satellite-signal to receiver; This just can guarantee that whole digital distribution receiving system is in off position under the situation that receiver is replaced through mutual control, avoids the user to use the digital distribution receiving system to remove to receive other satellite-signals, thereby can effectively improve the fail safe that the satellite digital distribution receives.
In a kind of preferred embodiment of the application, said receiver communication control circuit specifically can comprise:
Preset module is used to preset first key and second key;
First receiver module is used to receive first enciphered data, and wherein, said first enciphered data is utilized said first key that first random number is encrypted by receiver and obtained;
First encrypting module is used to utilize said second key that said first enciphered data is encrypted, and obtains second enciphered data; And
First returns module; Be used for said second enciphered data is returned to receiver, utilize said second key and first key that said second enciphered data is deciphered successively by receiver and obtain second random number, and compare first random number and second random number; If it is identical; First communication of then thinking verify successfully, if difference is then thought first authentication failed of communicating by letter;
First deciphering module is used to utilize said first key that said first enciphered data is deciphered, and obtains the 3rd random number;
Second receiver module is used to receive second communication checking request, and wherein, said second communication checking request is initiated when first communication is verified successfully by receiver;
Second encrypting module is used for when receiving said second communication checking request, utilizing said second key that said the 3rd random number is encrypted and obtaining the 3rd enciphered data;
Second returns module, is used for said the 3rd enciphered data is returned to receiver;
The 3rd receiver module is used to receive the 4th enciphered data, and wherein, said the 4th enciphered data is utilized said first key that said the 3rd enciphered data is encrypted by receiver and obtained;
The 3rd deciphering module is used for utilizing successively said first key and second key that said the 4th enciphered data is deciphered and obtains the 4th random number;
The second communication authentication module is used for comparison the 3rd random number and the 4th random number, if identical, thinks that then second communication verifies successfully, if different, then thinks the second communication authentication failed.
With reference to Fig. 4, show the flow chart of a kind of first communication checking of the application and second communication checking, specifically can comprise:
Built-in 2 64 key A, B in step 401, receiver and the tuner, wherein, in 64 preceding 56 effectively, back 8 are used for parity check bit;
Need to prove; When adopting the tuner scheme of embodiment 3; If receiver is not initiated second communication checking request within a certain period of time, then the receiver communication control circuit can think that also receiver is replaced, and in time cuts off the power supply to tuner inside active device; Perhaps; Tuner (for example can't be carried out the second communication checking within a certain period of time; Tuner and receiver can be arranged, and after the second communication checking was accomplished, tuner sent corresponding identification information to receiver); Then receiver can think that also tuner is replaced, and in time cuts off the power supply to the receiver communication control circuit.
Corresponding with aforementioned tuner embodiment; The application also provides a kind of receiver; Specifically can comprise the tuner communication control circuit; It is supplied power to tuner through coaxial cable, is used for when powering on and/or the first communication checking is carried out to tuner in the back that powers on, and when the first communication authentication failed, cuts off the power supply to tuner.
In a kind of preferred embodiment of the application; Said tuner communication control circuit; Also being used in first communication supplies power to tuner when verifying successfully; When powering on and/or the back that powers on accept the second communication checking of tuner through said coaxial cable, cut off tuner by tuner when the second communication authentication failed in the power supply of low noise amplifier, local oscillation circuit and IF amplifier circuit.
In the application's another kind of preferred embodiment, said tuner communication control circuit specifically can comprise:
Preset module is used to preset first key and second key;
First encrypting module is used to utilize said first key that first random number is encrypted and obtains first enciphered data;
First sending module is used for said first enciphered data is sent to tuner, utilizes said second key that said first enciphered data is encrypted by tuner, obtains second enciphered data;
First receiver module is used to receive said second enciphered data;
First deciphering module is used for utilizing successively said second key and first key that said second enciphered data is deciphered and obtains second random number; And
Authentication module is used for comparison first random number and second random number, if identical, first communication of then thinking verify successfully, if difference is then thought first authentication failed of communicating by letter.
Because receiver is communicated by letter based on mutual communication completion first with tuner and is verified and/or the second communication checking; So receiver embodiment is similar basically with tuner embodiment; So that describes is fairly simple, relevant part gets final product referring to the part explanation of tuner embodiment.
With reference to Fig. 5; Show the structure chart of a kind of satellite receiving system embodiment of the application; Specifically can comprise antenna 501, tuner 502 and receiver 503; Wherein, said tuner 502 may further include low noise amplifier 521, filter 522, local oscillation circuit 523, frequency mixer 524, IF amplifier circuit 525 and receiver communication control circuit 526;
Wherein, The satellite-signal that said antenna 501 receives is after probe is coupled into said low noise amplifier 521 amplifications; Select required frequency range by said filter 522; The oscillator signal of the satellite-signal of said filter 522 outputs and local oscillation circuit 523 outputs mixes at said frequency mixer 524, and the intermediate-freuqncy signal of said frequency mixer 524 outputs outputs to receiver through coaxial wire after said IF amplifier circuit 525 amplifies;
Said receiver communication control circuit 526; It accepts the power supply of said receiver through said coaxial cable; Simultaneously said low noise amplifier 521, local oscillation circuit 523 and IF amplifier circuit 525 are supplied power; Be used for accepting when receiver powers on and/or after powering on the first communication checking of receiver, when the first communication authentication failed, its power supply is cut off;
Said receiver 503 may further include tuner communication control circuit 531; It is supplied power to tuner 502 through coaxial cable; Be used for when powering on and/or the first communication checking is carried out to tuner 502 in the back that powers on, and when the first communication authentication failed, cut off power supply tuner.
In a kind of preferred embodiment of the application, said tuner communication control circuit 531 also is used in first communication and said receiver communication control circuit is supplied power when verifying successfully;
Said receiver communication control circuit 526; Also be used in the power supply of accepting said receiver when first communication is verified successfully; When powering on and/or the back that powers on through said coaxial cable said receiver is carried out second communication checking, and when the second communication authentication failed, cut off power supply to said low noise amplifier 521, local oscillation circuit 523 and IF amplifier circuit 525.
For satellite receiving system embodiment, because it is similar basically with tuner embodiment, so description is fairly simple, relevant part gets final product referring to the part explanation of tuner embodiment.
Each embodiment in this specification all adopts the mode of going forward one by one to describe, and what each embodiment stressed all is and the difference of other embodiment that identical similar part is mutually referring to getting final product between each embodiment.
More than to a kind of tuner, receiver and satellite receiving system that the application provided; Carried out detailed introduction; Used concrete example among this paper the application's principle and execution mode are set forth, the explanation of above embodiment just is used to help to understand the application's method and core concept thereof; Simultaneously, for one of ordinary skill in the art, according to the application's thought, the part that on embodiment and range of application, all can change, in sum, this description should not be construed as the restriction to the application.
Claims (10)
1. a tuner is characterized in that, comprises low noise amplifier, filter, local oscillation circuit, frequency mixer, IF amplifier circuit and receiver communication control circuit;
Wherein, The satellite-signal that antenna receives is after probe is coupled into said low noise amplifier amplification; Select required frequency range by said filter; The oscillator signal of the satellite-signal of said filter output and local oscillation circuit output mixes at said frequency mixer, and the intermediate-freuqncy signal of said frequency mixer output outputs to receiver through coaxial wire after said IF amplifier circuit amplifies;
Said receiver communication control circuit; It accepts the power supply of said receiver through said coaxial cable; Simultaneously said low noise amplifier, local oscillation circuit and IF amplifier circuit are supplied power; Be used for accepting when receiver powers on and/or after powering on the first communication checking of receiver, when the first communication authentication failed, its power supply is cut off.
2. tuner as claimed in claim 1; It is characterized in that; Said receiver communication control circuit; Also be used for when first communication is verified successfully, accepting the power supply of said receiver, through said coaxial cable said receiver carried out the second communication checking when powering on and/or after powering on, and when the second communication authentication failed, cut off power supply said low noise amplifier, local oscillation circuit and IF amplifier circuit.
3. according to claim 1 or claim 2 tuner is characterized in that said receiver communication control circuit comprises:
Preset module is used to preset first key and second key;
First receiver module is used to receive first enciphered data, and wherein, said first enciphered data is utilized said first key that first random number is encrypted by receiver and obtained;
First encrypting module is used to utilize said second key that said first enciphered data is encrypted, and obtains second enciphered data; And
First returns module; Be used for said second enciphered data is returned to receiver, utilize said second key and first key that said second enciphered data is deciphered successively by receiver and obtain second random number, and compare first random number and second random number; If it is identical; First communication of then thinking verify successfully, if difference is then thought first authentication failed of communicating by letter.
4. tuner as claimed in claim 3 is characterized in that, said receiver communication control circuit also comprises:
First deciphering module is used to utilize said first key that said first enciphered data is deciphered, and obtains the 3rd random number;
Second receiver module is used to receive second communication checking request, and wherein, said second communication checking request is initiated when first communication is verified successfully by receiver;
Second encrypting module is used for when receiving said second communication checking request, utilizing said second key that said the 3rd random number is encrypted and obtaining the 3rd enciphered data;
Second returns module, is used for said the 3rd enciphered data is returned to receiver;
The 3rd receiver module is used to receive the 4th enciphered data, and wherein, said the 4th enciphered data is utilized said first key that said the 3rd enciphered data is encrypted by receiver and obtained;
The 3rd deciphering module is used for utilizing successively said first key and second key that said the 4th enciphered data is deciphered and obtains the 4th random number;
The second communication authentication module is used for comparison the 3rd random number and the 4th random number, if identical, thinks that then second communication verifies successfully, if different, then thinks the second communication authentication failed.
5. like each described tuner in the claim 1 to 4, it is characterized in that, also comprise:
The biasing power supply circuits; The one of which end links to each other with said receiver communication control circuit; In the other end and said low noise amplifier, local oscillation circuit and the IF amplifier circuit one or more links to each other; Be used to accept the power supply of said receiver communication control circuit, simultaneously in low noise amplifier, local oscillation circuit and the IF amplifier circuit one or more stated that links to each other supplied power;
At this moment; Said receiver communication control circuit; Said low noise amplifier, local oscillation circuit and IF amplifier circuit are supplied power, perhaps, to not supplying power in said low noise amplifier, local oscillation circuit and the IF amplifier circuit with said biasing power supply circuits link to each other.
6. receiver; It is characterized in that comprise the tuner communication control circuit, it is supplied power to tuner through coaxial cable; Be used for when powering on and/or the first communication checking is carried out to tuner in the back that powers on, and when the first communication authentication failed, cut off power supply tuner.
7. receiver as claimed in claim 6; It is characterized in that; Said tuner communication control circuit; Also be used for tuner being supplied power when verify successfully in first communication, when powering on and/or the back that the powers on second communication of accepting tuner through said coaxial cable verify, by tuner when the second communication authentication failed cut-out to tuner in the power supply of low noise amplifier, local oscillation circuit and IF amplifier circuit.
8. like claim 6 or 7 described receivers, it is characterized in that said tuner communication control circuit comprises:
Preset module is used to preset first key and second key;
First encrypting module is used to utilize said first key that first random number is encrypted and obtains first enciphered data;
First sending module is used for said first enciphered data is sent to tuner, utilizes said second key that said first enciphered data is encrypted by tuner, obtains second enciphered data;
First receiver module is used to receive said second enciphered data;
First deciphering module is used for utilizing successively said second key and first key that said second enciphered data is deciphered and obtains second random number; And
Authentication module is used for comparison first random number and second random number, if identical, first communication of then thinking verify successfully, if difference is then thought first authentication failed of communicating by letter.
9. a satellite receiving system comprises antenna, tuner and receiver, it is characterized in that, said tuner comprises low noise amplifier, filter, local oscillation circuit, frequency mixer, IF amplifier circuit and receiver communication control circuit;
Wherein, The satellite-signal that said antenna receives is after probe is coupled into said low noise amplifier amplification; Select required frequency range by said filter; The oscillator signal of the satellite-signal of said filter output and local oscillation circuit output mixes at said frequency mixer, and the intermediate-freuqncy signal of said frequency mixer output outputs to receiver through coaxial wire after said IF amplifier circuit amplifies;
Said receiver communication control circuit; It accepts the power supply of said receiver through said coaxial cable; Simultaneously said low noise amplifier, local oscillation circuit and IF amplifier circuit are supplied power; Be used for accepting when receiver powers on and/or after powering on the first communication checking of receiver, when the first communication authentication failed, its power supply is cut off;
Said receiver comprises the tuner communication control circuit; It is supplied power to said receiver communication control circuit through coaxial cable; Be used for when powering on and/or the first communication checking is carried out to said receiver communication control circuit in the back that powers on, and when the first communication authentication failed, cut off power supply tuner.
10. satellite receiving system as claimed in claim 9 is characterized in that, said tuner communication control circuit also is used for when first communication is verified successfully, said receiver communication control circuit being supplied power;
Said receiver communication control circuit; Also be used for when first communication is verified successfully, accepting the power supply of said receiver; Through said coaxial cable said receiver is carried out the second communication checking when powering on and/or after powering on, and when the second communication authentication failed, cut off power supply said low noise amplifier, local oscillation circuit and IF amplifier circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210160812.3A CN102694589B (en) | 2012-05-22 | 2012-05-22 | A kind of tuner, receiver and satellite receiving system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210160812.3A CN102694589B (en) | 2012-05-22 | 2012-05-22 | A kind of tuner, receiver and satellite receiving system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102694589A true CN102694589A (en) | 2012-09-26 |
| CN102694589B CN102694589B (en) | 2015-09-02 |
Family
ID=46859884
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210160812.3A Expired - Fee Related CN102694589B (en) | 2012-05-22 | 2012-05-22 | A kind of tuner, receiver and satellite receiving system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102694589B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103167254A (en) * | 2013-03-29 | 2013-06-19 | 无锡盟欣智能科技有限公司 | Tuner circuit |
| CN104486601A (en) * | 2015-01-04 | 2015-04-01 | 安徽波维电子科技有限公司 | Anti-theft method of outdoor unit of satellite television receiving system |
| CN105657300A (en) * | 2016-03-18 | 2016-06-08 | 珠海迈科智能科技股份有限公司 | Satellite tuner circuit and satellite tuner |
| CN108736904A (en) * | 2017-04-17 | 2018-11-02 | 东莞百电子有限公司 | A kind of novel VSAT receivers and transmitter |
| CN111586374A (en) * | 2020-05-20 | 2020-08-25 | 江苏银河数字技术有限公司 | Satellite receiver system and control method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5890051A (en) * | 1997-11-19 | 1999-03-30 | Ericsson Inc. | On-channel transceiver architecture in a dual band mobile phone |
| CN1885710A (en) * | 2005-06-21 | 2006-12-27 | 启碁科技股份有限公司 | Low noise frequency demultiplier |
| CN1984318A (en) * | 2005-12-16 | 2007-06-20 | 厦门雅迅网络股份有限公司 | Method for processing on-line advertisement data on taxi |
| CN101977073A (en) * | 2010-10-28 | 2011-02-16 | 中国华录集团有限公司 | Bidirectional authentication system for satellite receiving terminal and receiving antenna |
-
2012
- 2012-05-22 CN CN201210160812.3A patent/CN102694589B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5890051A (en) * | 1997-11-19 | 1999-03-30 | Ericsson Inc. | On-channel transceiver architecture in a dual band mobile phone |
| CN1885710A (en) * | 2005-06-21 | 2006-12-27 | 启碁科技股份有限公司 | Low noise frequency demultiplier |
| CN1984318A (en) * | 2005-12-16 | 2007-06-20 | 厦门雅迅网络股份有限公司 | Method for processing on-line advertisement data on taxi |
| CN101977073A (en) * | 2010-10-28 | 2011-02-16 | 中国华录集团有限公司 | Bidirectional authentication system for satellite receiving terminal and receiving antenna |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103167254A (en) * | 2013-03-29 | 2013-06-19 | 无锡盟欣智能科技有限公司 | Tuner circuit |
| CN103167254B (en) * | 2013-03-29 | 2016-02-24 | 深圳英盟欣科技有限公司 | High frequency tuner circuit |
| CN104486601A (en) * | 2015-01-04 | 2015-04-01 | 安徽波维电子科技有限公司 | Anti-theft method of outdoor unit of satellite television receiving system |
| CN104486601B (en) * | 2015-01-04 | 2017-06-30 | 安徽波维电子科技有限公司 | The outdoor unit theft preventing method of satellite television receiving system |
| CN105657300A (en) * | 2016-03-18 | 2016-06-08 | 珠海迈科智能科技股份有限公司 | Satellite tuner circuit and satellite tuner |
| CN108736904A (en) * | 2017-04-17 | 2018-11-02 | 东莞百电子有限公司 | A kind of novel VSAT receivers and transmitter |
| CN111586374A (en) * | 2020-05-20 | 2020-08-25 | 江苏银河数字技术有限公司 | Satellite receiver system and control method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102694589B (en) | 2015-09-02 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Dinc et al. | A 60 GHz CMOS full-duplex transceiver and link with polarization-based antenna and RF cancellation | |
| TWI221358B (en) | Method and apparatus for signal power loss reduction in RF communication systems | |
| US20200099559A1 (en) | Systems and methods for combining signals from multiple active wireless receivers | |
| CN102694589B (en) | A kind of tuner, receiver and satellite receiving system | |
| US6798314B2 (en) | Transmit/receive combiner using shunt admittance elements for isolation | |
| US11862861B2 (en) | Hybrid wireless transceiver architecture that supports multiple antenna arrays | |
| WO2019114622A1 (en) | Antenna tuning circuit, antena apparatus and mobile terminal | |
| US9490749B2 (en) | Frequency translation device and wireless communication system using the same | |
| US10886612B2 (en) | Bi-directional active phase shifting | |
| CN103095330A (en) | Dual mode local area network transceiver and methods for use therewith | |
| JP2006324878A (en) | Radio communication apparatus | |
| CN107104696A (en) | Frequency communication devices and method | |
| NO842721L (en) | MIKROBOELGE-TELECOMMUNICATIONS SYSTEM | |
| US20140308892A1 (en) | Smart upconverter for broadband satellite communication | |
| CN110880942B (en) | Radio frequency circuit and communication equipment | |
| US9197309B2 (en) | Systems and methods for providing signals of multiple active wireless transmitters | |
| US20080182523A1 (en) | Radio | |
| KR100984838B1 (en) | Radio signal distribution device and reception system comprising said device | |
| CN101841669A (en) | Mobile multimedia broadcast receiving chip, device, and method, and baseband processing chip | |
| TWI618348B (en) | Low noise amplifier module with output coupler | |
| KR102516607B1 (en) | Broadband RF signal receiver and method | |
| JP6211740B1 (en) | Fixed intermediate frequency signal with tuned low frequency local oscillator reference for linear transmitters | |
| CN204272096U (en) | Two-way frequency down-converts control circuit | |
| JP4074807B2 (en) | Millimeter-wave transmission / reception system, transmission device, and reception device | |
| US20090028224A1 (en) | Semiconductor device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150902 |