CN1615017A - Remote controlled single channel outputting method for concentrating controller in digital analog Tv-set - Google Patents
Remote controlled single channel outputting method for concentrating controller in digital analog Tv-set Download PDFInfo
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- CN1615017A CN1615017A CN 200410040752 CN200410040752A CN1615017A CN 1615017 A CN1615017 A CN 1615017A CN 200410040752 CN200410040752 CN 200410040752 CN 200410040752 A CN200410040752 A CN 200410040752A CN 1615017 A CN1615017 A CN 1615017A
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Abstract
The invention consists of: TV station signal output device; HFC transmission network; hub and descramble controller; user terminal device. The remote control for single channel output at the mode of signal processing combining channel processing can make scramble/descramble of digital cable TV more efficiency, safety.
Description
Technical field:
The present invention relates to the CA Conditional Access control technology of a kind of digital cable TV (DVB-C) and analog catv compatibility, the method for the single channel output of particularly a kind of digital simulation TV line concentration controller remote control.
The present invention relates to a kind of new television system, be referred to as the integrated application of new and high technologies such as DVB digital video-audio broadcast technology, digital television transfer technology, Digital Signal Processing, computer software technology, DSP microprocessor technology, CA condition reception technique, modern data transmission technology, high frequency microelectric technique, network technology, The Interactive Multimedia Technology usually.
Background technology:
Existing broadcast television signal comprises Digital Television and anolog TV signals, and Digital Television becomes the developing direction of current broadcast television technique with its good signal image performance and transmission process performance.Simultaneously pay TV has also more satisfied the needs of different levels, but the harmful effect that problem is brought because problem of piracy, stealing signal, private are drawn disorderly and connect, malice is in arrears with etc. has seriously hindered the development of wired broadcasting TV network.
The arrival of Digital Television is rouse oneself for undoubtedly one of operator and wishes, and the CA encryption condition reception of all placing hope on numeral realizes the purpose of charging by top box of digital machine.The transmission of Digital Television still utilizes original cable TV network to be sent to huge numbers of families, the accepting device of user's receiving terminal all is simulated television basically, just impossible directly receiving digital signals, need special-purpose digital signal processing apparatus, convert the digital signal that receives to anolog TV signals again and just can make the simulated television of receiving terminal watch the TV signal that is transformed into simulation by numeral.The household electrical appliance that Here it is is referred to as usually " top box of digital machine " are finished this conversion work.In fact, Digital Television is carried out the reception of CA encryption condition and deposit big following problem: at first, the whole system Costco Wholesale is big, and particularly CA encryption condition receives very expensive.The price of the top box of digital machine in the second, one family is too high, and the user is difficult to accept.The 3rd, can suffer hacker's attack equally, appearance piracy is blocked and is cracked, and can private draw random connecing equally in user family, separates signal steathily, equally makes customer churn, and the unregistered household increases, and charge is difficulty equally.The 4th, increase maintenance capacity, owing to crack in the family or other factors are easy to generate human failure, make the cable television operator be busy with maintenance.The 5th, be unfavorable for transmitted in both directions.The reverse influx noise of " household electrical appliance " mode is big, oppositely converges balanced religion difficulty.
On the other hand, the concrete technical solution of the CA condition of simulated television reception can be divided into three major types:
1, passage processing mode: be exactly not scrambling of front end, turn-off endways or the addressable charge management system (rower GY/T153-2000) of scrambling, as shown in Figure 1.At front end TV signal is not done any processing and just transmit on main line, when signal arrives terminal distribution network, distribute by terminal hub, the decay that TV signal is carried out all-channel is turn-offed (or scrambling) and is reached control to the terminal use.This type systematic biggest advantage is with low cost, and only needing increases Subscriber Management System at cable TV station's front end, increases the address signal allocation matrix at user side.Because it is subscriber-coded that this type systematic just increases in cable TV signal, cable TV signal is not handled, but also therefore make this type systematic deposit big very big defective aspect fail safe and the reliability, because TV signal without any encryption measures, is directly obtained TV signal and is surreptitiously looked thereby the user can walk around the line concentration distributor.Other one big defective also occurs among the validated user man.For example handed over the license fee of 10 yuans in every month, he can be shared with this signal and neighbour's, even an amplifier is installed at home signal is amplified, and signal is provided for a sub-district, and everybody freely watches.This is difficult to the effect that the condition that plays receives, and practicality is relatively poor.
2, signal processing mode: carry out scrambling (rower GY/T141-1999) at front end exactly, as shown in Figure 2, promptly cable TV signal is added certain specific technology and disturb, form the scrambled television signal.Before entering user's television set, the user goes back original image and normally watches by special-purpose descrambler (or claiming set-top box) ability descrambling.Biggest advantage is exactly that original distribution network is not done any change, and user oneself can install a set-top box as long as mandate just can have been watched through cable TV, and is simple and convenient concerning wired TV station, can carry out the paying of increment channel and watch.Shortcoming is: (1) descrambling set-top box is on the high side, be subjected to cost restriction and be difficult in whole wired network carrying out, and investment is bigger, and wired TV station also can't bear.(2) set-top box that has (refer to group separate) also can spread, and after the reduction of set-top box descrambling, can watch or amplifies, expands to wider to neighbours equally.(3) no matter be that the set-top box that the group separates or singly separates also has top box of digital machine, all being a kind of " household electrical appliance " equipment, is to use in user family, and poor stability and maintenance difficulties are big, also cause easy deciphering because of occupation mode.(4) transmitted in both directions poor performance.
3, mixed processing mode: promptly " signal processing " adds " passage processing " mode, and as shown in Figure 3, this mode has open in Chinese patent: ZL01247209.3 and ZL01108710.2.This technology has overcome the shortcoming of above-mentioned dual mode, has developed their advantage.The set-top box of " household electrical appliance " has been become " network equipment ", at home can also can the descrambling rating without set-top box, but it does not still solve the compatibling problem that how to prevent diffusion signal problem and Digital Television as the first kind in user family, the use problem of top box of digital machine.
In sum, the charge that the CA condition of Digital Television or simulated television receives cable TV network all exists deficiency and defective, particularly progressively replace in the process of simulated television in Digital Television, under Digital Television and simulated television and the situation of depositing, to use the CA condition of analog-and digital-TV to receive two cover systems respectively, increased the input of cable TV station like this, can't reliable and effective charge and stop to connect steathily, surreptitiously look, crack numeral, analog catv signal anywhere.Can not more can not effectively carry out multiple value-added service control and management in mould, the compatible transmission control and management of number transitional period.
Summary of the invention:
The CA condition that the purpose of this invention is to provide a kind of digital cable TV (DVB-C) and analog catv compatibility receives control technology, the method for the single channel output of particularly a kind of digital simulation TV line concentration controller remote control.This method adds the method for the single channel output of remote control on the basis of " passage processing " mode in " signal processing ", make simulation, digital cable TV add descrambling more effectively, reliably, safety.Can not transmit diffusion arbitrarily especially in user family, it is impossible fully that attempt anywhere connects, surreptitiously looks, cracks TV signal steathily, and the condition that can really finish numeral and analog catv receives.Realized the smooth transition of simulation-to-digital cable TV simultaneously.Want to see that for the user numeral just opens numeral; Want to see that simulation just opens simulation; Number, mould with see can, personalized more, adapt to the selection of autonomy-oriented more, help digitized integral translation more.This can advance the development process of Digital Television greatly.
Concrete technical scheme of the present invention is as follows:
The method of the single channel output of a kind of digital simulation TV line concentration controller remote control comprises front end TV station signal output apparatus, HFC transmission network, line concentration descrambling controller, user terminal apparatus, it is characterized in that: comprise following process steps:
A, through the encoder of front end TV station signal output apparatus, to digital television signal is that vision signal is carried out mould, transformation of variables, press the Moving Picture Experts Group-2 encoding compression, form elementary stream, carry out again that the multiplexed formation data flow of multiplexer enters the QAM modulation and upconverter becomes the Digital Television radiofrequency signal;
B, through the Frame Synchro of front end TV station signal output apparatus, video signal source is made frame synchronization process, the synchronous head of multi-channel video signal is corrected into synchronously with frame synchronization and the multi-channel video signal of homophase and become the radiofrequency signal of different channel through modulators modulate;
C, through the blender of front end TV station signal output apparatus, digital signal, the analog signal of multichannel different channel is mixed into the cable TV radiofrequency signal;
D, through the scrambling machine of front end TV station signal output apparatus, simulation generates the trip field sync signal, and all radiofrequency signals are carried out the synchronizing signal compression that decays at random, to simulate, the scrambling of digital cable TV;
E, the supervisory computer by front end TV station signal output apparatus are sent user code, state of a control sign indicating number and the channel code of paying into data encryption modulator packaging ciphering modulation back and are formed radiofrequency signal and be mixed into one road cable TV signal with the cable TV radiofrequency signal of scrambling through blender again;
F, the cable TV signal of scrambling, by the HFC transmission network, enter line concentration terminal descrambling controller, independent respectively control and the above user in management at least 1 family, control to each user respectively by the corresponding coaxial cable of controlling number of users of line concentration controller output, by the management of front end mandate automation, in user terminal apparatus, each user independently adopts a remote controller to carry out the selection of channel.As shown in Figure 4.
Line concentration controller of the present invention comprises casing, input port, output port, integrated circuit, described integrated circuit comprises attenuator circuit, equalizing circuit, amplifying circuit, the distribution network matrix circuit, frequency-conversion circuit, the descrambling control circuit, the demodulation decrypt circuit, data separation circuit and singlechip CPU, wherein: described line concentration controller improves the cable TV signal that receives the flatness of cable TV signal behind attenuator circuit 201 and equalizing circuit 202, improve the effect that descrambling restores, enter amplifying circuit 203 again, cable TV signal after the amplification is divided into two road signals: the one tunnel enters distribution network matrix 206 distributes a plurality of users, send into frequency-conversion circuit 207 more respectively and carry out frequency translation with the total line traffic control of I2C, the cable television channels of 48.5-870MHz frequency range is transformed into single channel, when channel change is watched different program, by the remote controller in the user family 211, reception in the telecontrol room 210, receive head and receive the descrambling control circuit that is up to after the remote signal in the hub, send into separation and the shaping that data separation circuit 208 carries out control data signal again through the descrambling control circuit, amplification is sent into singlechip CPU (205) again and is handled; Another road cable TV signal is sent into demodulator 204 and is carried out demodulation and decrypt address signal, current this user's behaviour in service signal and descramble signal, the data-signal that enters CPU (205) and the isolated request channel change of earlier data respectively carries out after comprehensive distinguishing, the contrast making determining whether this user is implemented output and descrambling to the request channel program by CPU again, the paid in this way validated user that takes, then export the TV signal of descrambling reduction, otherwise do not export also not descrambling.The descrambling control action of line concentration controller is that digital and analog signaling is carried out the CA Conditional Access, thereby realizes the toll administration to Digital Television and simulated television.As Fig. 7.
Attenuator circuit of the present invention, equalizing circuit and amplifying circuit all are conventional electric signal processing circuits.
Distribution network matrix circuit of the present invention comprises distribution network matrix and switch gating matrix, the distribution network matrix circuit is connected with amplifying circuit with singlechip CPU, and be communicated with frequency-conversion circuit and descrambling control circuit, under the control of signal after attenuation equalization is amplified in singlechip CPU, what contrast distribution network matrix and singlechip CPU were sent carries out demodulation and decrypts address signal through the demodulation decrypt circuit, current this user's behaviour in service signal and descramble signal, singlechip CPU IC5-1 sends the instruction branch of whether carrying out descrambling and is clipped to the distribution network matrix circuit after examining, channel conversion circuit and descrambling control circuit, carrying out descrambling by the switch gating matrix in the distribution network matrix circuit instructs reduction TV programme or execution to close cut-off signal instruction, the descrambling control circuit relevant work descrambling or the not descrambling of not working.
Frequency-conversion circuit of the present invention comprises filter, amplifier, first frequency mixer, second frequency mixer, phase-locked loop, amplify through behind the filter from the signal after the processing of distribution network matrix circuit, cable TV signal with the 48.5-870MHz frequency range, again through first frequency mixer, under the control of singlechip CPU, high-frequency signal to phase-locked loop control back output 2000MHz, once more through filter, amplifier to second frequency mixer, the high-frequency signal with the 2000MHz frequency after filtering is amplified is downconverted into single channel output in the control of singlechip CPU.
Comprise IC9-1 and IC9-2 chip, VD9-1 and VD9-2 triode in the descrambling control circuit of the present invention, under the control of singlechip CPU, signal is imported data separation circuit carry out the separation of control data signal and shaping, amplification; And receive or transmission receives the remote signal of head from remote controller.
Data separation circuit of the present invention receives the control data signal of handling from through the descrambling control circuit, and will control data signal separates and shaping, be transferred in the singlechip CPU after amplifying.
Demodulator of the present invention is the demodulation decrypt circuit, and adopting model is the chip of IC4-1 and IC4-2, is transferred among the IC5-1 and IC5-2 of singlechip CPU after the signal demodulation deciphering after the balanced amplification of self damping in the future.
What each delivery outlet of line concentration controller of the present invention was exported is single channel, and a line concentration controller has 2 delivery outlets at least.Its process is, the cable TV signal of scrambling is divided into two-way, to wherein one the tunnel send into allocation matrix, lead up to data demodulates, solve address, conditional code and descramble signal respectively, meanwhile the remote controller by the user, remote control also enters the CPU microprocessor simultaneously to the data-signal of the channel of wanting to watch, confirm to judge that through CPU this channel user has paid the fees and can watch, CPU sent the descrambling instruction again and opened this user this moment, allowed its reduction watch.Otherwise send not this channel instruction of descrambling and turn-off this subscriber channel, make this user can not receive signal and can't watch.For digital television signal too, if remote control is this digital TV channel, is again validated user, then the Digital Television descrambling is reduced into the digital television signal of not scrambling, send into the top box of digital machine demultiplexing again, decompressing is reduced into analog signal and enters television set and can watch.If this user is the expense of intersection number word TV not,,, also can not receive digital television signal even there is top box of digital machine also of no use to this family descrambling no-output again neither.
Front end of the present invention TV station signal output apparatus is a front end scrambling part, comprise encoder, multiplexer, QAM modulator, upconverter, Frame Synchro, modulator, blender, scrambling machine, the cable TV signal that the digital simulation radiofrequency signal is formed is divided into two-way, one road signal is sent into scrambling circuit 104 and is carried out scrambling, i.e. become the cable TV signal of scrambling after the scramble decay compression; One the tunnel sends into demodulation 101 solves vision signal, through synchronizing separator circuit 102, from vision signal, separate a trip composite signal, and be that benchmark generates two paths of signals with synchronizing separator circuit 102, one the tunnel is that scrambling control circuit 103 is sent into scrambling circuit 104 and carried out the cable TV signal that scramble decay is collapsed into scrambling and enter hybrid circuit 107, another road is a descrambling control circuit 105, generation descrambling control signal is directly sent into data encryption modulator 106 and is modulated into radiofrequency signal, after entering hybrid circuit 107 with the cable TV signal of scrambling, amplify 108 again and send front end to the HFC transmission network.See Fig. 6.
The scrambling machine of front end of the present invention TV station signal output apparatus, synchronizing separator circuit, scrambling control circuit, descrambling control circuit, data encryption modulator, blender and again amplifying circuit all adopt the circuit theory of conventional processing television signals.
The advantage of the inventive method is:
(1) be scrambled signals (containing digital television signal) after carrying out scrambling by front end at the input signal of the input port of line concentration descrambling controller, rather than the TV signal of not scrambling.Walking around hub, attempt connect signal steathily and just becomes meaningless before the input port, because pick out the TV signal of not having (containing digital television signal) visuality that the signal that comes is scrambling steathily.
(2) in line concentration controller, to control and manage each user's rating.Be right of way management, the whether management of descrambling again, the double insurance of promptly usually said " signal processing mode " and " passage processing mode ".
(3) a coaxial line house lead in is only arranged in user family, do not exist " the pirate card " of omnipotent descrambling machine or Digital Television illegally to crack problem, it is the line concentration controller that the set-top box of " household electrical appliance " has been become " network equipment ", and this point has innovation, absolute dual fail-safe.
(4) have anti-theft feature, connecing signal does not anywhere steathily all have effect.Can not steal in user family again and connect, promptly be exactly that two or multiple TV set are arranged in the same user family, also can only watch same TV programme.Want every television set and see own favorite program, just must expand the family rating to two or many of operation cable administrative department applications, and after paying certain expansion user costs and increasing license fee, can open, it is not all right not paying certain expense to operation cable administrative department, is that the family is expanded in absolutely not appearance privately and the robber connects the phenomenon generation.This has just really thoroughly wiped out the administrative vulnerability at unregistered household and tame many families.
(5) the one, can realize the mouthpiece effect of Party and government, accomplish freely to watch as in 1, in 2 or economize platform; The 2nd, basic license fee can only be watched basic channel; The 3rd, pay TV can be sold or whole rating by channel; The 4th, same so management is real has like this realized what the operation cable manager dreamed of for Digital Television, and money the more sees, money sees less, no money do not see (in maybe can only watching 1, in 2 or province's platform program) control and management.This is an increment individual service truly, adapts to the selection of autonomy-oriented more.
(6) use line concentration descrambling controller mode itself just to solve " last kilometer problem ".It does not produce additional interference and noise.Collective noise can be reduced to minimum.Be easy to converge equilibrium.Thereby help bidirectional rebuilding and realize transmitted in both directions.
(7) compatible fully with Digital Television, realized the translation transition of simulated television to Digital Television, this can advance the universal process of Digital Television greatly.Exactly all digitlizations can equally use right of way control that the user is opened or turn-off management by descrambling too, implement dual control, production to top box of digital machine also becomes simply, opens, standard, also can be installed in the television set and form " integrated digital television ", this has epoch making significance.
(8) cost performance is high, and function is so powerful but price is not high, is easy to be accepted by the user.
Description of drawings:
Fig. 1 has passage processing mode addressable charge system principle diagram
The existing signal processing mode of Fig. 2 adds descrambling Fare Collection System theory diagram
The existing patent ZL01247209.3 hybrid mode of Fig. 3 adds descrambling Fare Collection System theory diagram
Fig. 4 is the flow chart of the single channel output intent of line concentration descrambling controller remote control of the present invention
Fig. 5 is that scrambling signal changes schematic diagram in the scrambling process of the present invention
Wherein: (a) the Digital Television waveform before the scrambling not;
(b) the synchronous head waveform of the simulated television before the scrambling not;
(c) be scrambling scrambling signal waveform;
(d) be the Digital Television waveform after the scrambling;
(e) be the simulated television synchronous head waveform after the scrambling.
Fig. 6 numeral of the present invention, simulation scrambling flow chart
Fig. 7 digital simulation descrambling of the present invention flow chart
Fig. 8 demodulator circuit schematic diagram of the present invention
Fig. 9 separated in synchronization of the present invention adds the descrambling pulse data and forms electrical schematic diagram
Figure 10 the present invention adds the descrambling circuit electrical schematic diagram
Figure 11 data-modulated of the present invention, mixing, amplification electrical schematic diagram
Figure 12 decay of the present invention, equilibrium, amplification electrical schematic diagram
Figure 13 distribution network matrix of the present invention, switch gating matrix theory diagram
Figure 14 distribution network electrical schematic diagram of the present invention
Figure 15 control switch electrical schematic diagram of the present invention
Figure 16 frequency translation electrical schematic diagram of the present invention
Figure 17 descrambling control of the present invention ReSet Circuit schematic diagram
Figure 18 data separating control of the present invention electrical schematic diagram
Figure 19 demodulation deciphering of the present invention and CPU control electrical schematic diagram
Figure 20 data encryption modulator of the present invention electrical schematic diagram
Embodiment:
Embodiment 1:
The present invention adopts unified scrambling mode to have innovative point to Digital Television and simulated television, for Digital Television is a kind of scramble mode scramble pulse signal at random that promptly superposes, upset control in real time, make its digital television signal sound, image completely without or image mosaic phenomenon appears, basic do not have visual.As shown in Figure 5, wherein (a) is the digital modulation signals before the scramble, (c) for upsetting control signal, (d) is the digital modulation signals after upsetting.For simulated television is the scrambling mode of compressing synchronously, as shown in Figure 5, wherein (b) is the synchronous head signal before the scrambling, (e) be the synchronous head signal after the scrambling, because the synchronous head scrambling is compressed, television set just can't obtain synchronizing signal, and at this moment serious distortion appears in image, can't watch.
Scrambling flow process in the inventive method is shown in Fig. 4 and 6.Vision signal is multiplexed through the digital coding compression, be split into the Digital Television radiofrequency signal after becoming mixing in the QAM modulation, multi-channel video signal is synchronous through Frame Synchro in addition, again after Video processing is distributed, the row of these signals with head frequently be corrected synchronously and homophase, promptly the capable field synchronization of all signals is all at same position, and the multiple signals that are corrected enter modulator and are mixed into one road cable TV signal with the multi-path digital TV signal again and enter the scrambling machine.As accompanying drawing 8,9,10,11.In the scrambling machine, generate scrambling control signal DATA3, finish (d), (e) the scrambled signals shape that Fig. 5 is upset in TV signal compressions all on the radio frequency by IC41, by 5 outputs of IC41.The CATV signal of scrambling does not enter another road of distributor via F11 sound surface filtering, be amplified into IC11 and carry out demodulation, solve vision signal, output to J3 by 7 of IC11, enter synchronizing separator circuit IC21, output to scrambling process chip IC23 and single-chip microcomputer IC27 respectively by 1 and 3 of IC21 again, IC24, IC25 work forms data state signal, control signal, it is scrambled signals, descramble signal, produce of 80 outputs of one road descrambling control signal by IC23, simultaneously with the state of supervisory computer, the signal address signal, control signal enters the data encryption modulator together and modulates to mix with the radiofrequency signal of scrambling and send into the cable TV HFC network.
Adopt line concentration descrambling controller at user side, be installed in the unit of Lou Dong, control 2-24 user, in user family, there is not analog set top, have only the top box of digital machine of standardization, openingization (to produce the digital television that just has only integration together if top box of digital machine is placed in the television set, just do not had top box of digital machine yet), this has just become outdoor " network equipment " to all set-top box (household electrical appliance) of descrambling part.Referring to Figure 10,12,13,14,15,16,17,18,19.Line concentration descrambling controller is received the address signal and the state of front end, control signal is uncommitted user, IC5-1 sent to instruct and closed the 206-2 no-output this moment, descrambling control circuit IC41 does not have the descrambling control signal, frequency changer circuit is not worked and no-output yet simultaneously, at this moment just can't see Digital Television and anolog TV signals, its effect is no signal output.Have only the user who pays dues in accordance with regulations just can use a teleswitch, by this root cable of registering one's residence, the remote controller remote control receives 210 the channel signals reception that will watch is passed back in the line concentration descrambling controller, distinguish respectively through channel-splitting filter, go different ways, send into cpu chip IC5-1 after 2 foot channels that the channel data signal of passback enters the IC8-1A comparison amplifier are relatively amplified and carry out the information processing contrast, by this user of CPU identification decision is the authorized user of having paid dues, then CPU sends descrambling information DALA2 through L41, enters descrambling reduction IC circuit 41 and is output as this channel signals of descrambling by 5 foots.Analog signal is then recovered compressed synchronous head signal and is opened the reduction rating in this way, shown in Fig. 5 it (a).Digital signal is then recovered (finishing) after the compressed digital signal in line concentration controller in this way, shown in Fig. 5 it (a), again through general top box of digital machine demultiplexing, decompression, behind the recovering signal, just can watch distinct image.
Embodiment 2:
The cable TV signal of the digital simulation radiofrequency signal being formed as Fig. 6 front end scrambling part is divided into two-way, referring again to Fig. 8,9,10,11.One road signal is sent into scrambling circuit 104 and is entered the IC41 chip through capacitor C 41 resistance R 41 and carry out scrambling, i.e. become the cable TV signal of scrambling after the scramble decay compression, outputs to blenders 107 by 5 foots of IC41.Demodulation 101 is sent on another road, see that Fig. 8 solves vision signal through IC11, through synchronizing separator circuit 102 (see figure 9)s, from vision signal, separate a trip composite signal, generate two paths of signals as benchmark, the one tunnel is that scrambling control circuit 103 is sent into scrambling circuit 104 (see figure 10)s and carried out the cable TV signal that the scramble decay is collapsed into scrambling and enter hybrid circuit 107.One the tunnel is descrambling control TV 105, generate the descrambling control signal, the address information that computer is sent simultaneously, state informations etc. are sent into data encryption modulator 106 together and are modulated into one tunnel radiofrequency signal, after the cable TV signal of scrambling mixes (107), amplify (108) again and send front end, as shown in figure 11.The disposable unified scrambling of having finished numeral, simulated television.
As Fig. 7 descrambling part: the effect of descrambling is that digital and analog signaling is carried out the CA Conditional Access, thereby realizes the toll administration to Digital Television and simulated television, referring to Figure 10,12,13,14,15,16,17,18,19.Cable TV signal enters in the line concentration descrambling controller and after 201 equilibriums 202 that decay the cable TV signal flatness is improved, and improves the effect that descrambling restores.Enter and amplify 203 (seeing Figure 12), the cable TV signal after the amplification is divided into two-way, and one the tunnel enters distribution network matrix 206 (seeing Figure 13,14,15) distributes the 2-24 family, sends into respectively to have I again
2The frequency-conversion circuit 207 (seeing Figure 16) of the total line traffic control of C carries out frequency translation, and the cable television channels of 48.5-870MHz frequency range is transformed into single channel, exports as 1 channel (48.556.5MHz).When watching different program as changing channel change, by the remote controller in the user family 211, reception in the telecontrol room 210 (seeing Figure 18), the reception head receives the descrambling that is up in the line concentration controller after the remote signal and controls channel splitting circuit, send into data separating 208 again through channel splitting circuit and carry out the separation of control data signal, isolated channel information is sent into singlechip CPU (205) again and is handled through shaping, amplification.Another road cable TV signal is sent into demodulator 204 and is carried out demodulation and decrypt address signal, and current this user's behaviour in service signal and descramble signal enter the output and the descrambling of the isolated request channel program of CPU IC5-1 and earlier data respectively.If the validated user of having authorized, then CPU makes and determines whether this user is implemented output and descrambling to the request channel program.If the validated user of having authorized, then CPU IC5-1 sends the instruction branch and is clipped to distribution network 206, and channel conversion circuit 207 and descrambling control circuit 209 are carried out descrambling instruction reduction TV programme, and this user normally watches.Otherwise distribution network 206 is carried out and is closed cut-off signal, and this moment, the channel conversion circuit 207 was also closed undelegated channel program simultaneously, and descrambling control circuit 209 do not work yet, descrambling not, and this moment, this user then selected less than seeing channel.At this moment the signal of disturbing is not still understood in output, and does not just have signal output at all.Want to use other omnipotent descrambling set-top box or top box of digital machine all not to have effect, definitely do not crack.So long as the disabled user does not definitely illegally see TV yet, unique want to see TV definitely to pay dues become validated user can the descrambling rating.
Embodiment 3:
Cable TV scrambling front end constitutes with embodiment 1.
Adopt line concentration descrambling controller at user side, be installed in the unit of Lou Dong, control 2-24 user, in user family, there is not analog set top, have only the top box of digital machine of standardization, openingization (to produce the digital television that just has only integration together if top box of digital machine is placed in the television set, just do not had top box of digital machine yet), this has just become outdoor " network equipment " to all set-top box (household electrical appliance) of descrambling part.Referring to Figure 10,12,13,14,15,16,17,18,19.Line concentration descrambling controller is received the address signal and the state of front end, control signal is uncommitted user, IC5-1 sent to instruct and closed the 206-2 no-output this moment, descrambling control circuit IC41 does not have the descrambling control signal, frequency changer circuit is not worked and no-output yet simultaneously, at this moment just can't see Digital Television and anolog TV signals, its effect is no signal output.Have only the user who pays dues in accordance with regulations just can use a teleswitch, by this root cable of registering one's residence, the remote controller remote control receives 210 the channel signals reception that will watch is passed back in the line concentration descrambling controller, send into CPUIC5-1 after 2 foot channels that enter the IC8-1A comparison amplifier are relatively amplified and carry out the information processing contrast, this user is the unauthorized user of not paying dues by the CPU identification decision, then CPU does not send descrambling information DALA2 through L41, do not enter reduction IC circuit 41 and be output as not this channel signals of descrambling by 5 foots, analog signal then remains compressed synchronous head signal and can not reduce rating in this way, shown in Fig. 5 it (e), and off switch gating matrix no-output, can't see any TV signal.Digital signal is not then recovered compressed digital signal in this way, shown in Fig. 5 it (d), and again through top box of digital machine demultiplexing, decompression, can not recovering signal, can not watch any image.
The inventive method characteristics and innovative point technically is all multisignal sources that are the digital signal and the analog signal of front end, is unified in simultaneously on the radio frequency all-channel is carried out the scrambling processing.Unification is that the scrambled signals in cycle is carried out scramble decay compression processing with the synchronizing signal.This technology is oversimplified scrambling equipment, function is but very strong, particularly to the scrambling CA condition of Digital Television receive numerous and diverse, cost is high can give it up, also no copyright and Intellectual Property Rights Issues, whatsoever what standard of standard and Digital Television all can conveniently be used.This CA condition receives can not only management simulation, and can administering digital, with low cost, price be homemade CA condition receive 1/20th.The 2nd, do not lie in front end and adopt what mode or technology scrambling, but the necessary scrambling of front end, and be that set-top box with " household electrical appliance " is transformed into and has " network equipment " that public (amplifier on circuit) also can control each user's descrambling, this mode that can a control and management 2-24 user has distinctive feature, and this mode and method are unprecedented.The 3rd, be single channel output at each port of line concentration controller, all the time export single channel, by the content among the remote control conversion 1ch of remote controller, be numeral or analog program, can realize that the user wants to see that numeral just opens numeral, want to see that simulation just opens simulation, numeral and simulation are all seen all passable, personalized more, adapt to the selection of autonomy-oriented more.The way of output of single channel and method are that utilization is an innovation in the line concentration descrambling controller at " network equipment ".Stopped fully thus all can't steal signal Anywhere at network.Cost is more much lower than set-top box per family.
The technical characterstic of the inventive method also is all can't surreptitiously look TV signal Anywhere in the front of line concentration controller and the back of registering one's residence.Reach General Bureau of Radio, Film and Television fully, the ideal functionality of calling for many years that the home and abroad colleague dreams of: the one, can open up several channel available for frees, this is the mouthpiece's of Party and government needs; The 2nd, open up the basic rate channel, the user must pay basic license fee and can watch; The 3rd, carry out the pay television channel service, press pay per channel, greatly develop value-added service; The 4th, adapt to the transmission of Digital Television fully, can DA compatibility, do not need expensive digital CA condition to receive the complete standardization of top box of digital machine, openingization, need not the plug-in card mandate, also need not separation between machine and card, the set-top box partial circuit can be held in the television set, form integrated digital television, any set-top box has not all been wanted in user family like this, the cost of whole Digital Television reduces greatly, has realized the balance transition of modulus, helps digitized integral translation more.This can advance the universal process of Digital Television greatly.
Claims (9)
1, the method for the single channel output of a kind of digital simulation TV line concentration controller remote control, comprise front end TV station signal output apparatus, HFC transmission network, line concentration descrambling controller, user terminal distribution network device, it is characterized in that: comprise following process steps:
A, through the encoder of front end TV station signal output apparatus, to digital television signal is that vision signal is carried out mould, transformation of variables, press the Moving Picture Experts Group-2 encoding compression, form elementary stream, carry out again that the multiplexed formation data flow of multiplexer enters the QAM modulation and upconverter becomes the Digital Television radiofrequency signal;
B, through the Frame Synchro of front end TV station signal output apparatus, video signal source is made frame synchronization process, the synchronous head of multi-channel video signal is corrected into synchronously with frame synchronization and the multi-channel video signal of homophase and become the radiofrequency signal of different channel through modulators modulate;
C, through the blender of front end TV station signal output apparatus, digital signal, the analog signal of multichannel different channel is mixed into the cable TV radiofrequency signal;
D, through the scrambling machine of front end TV station signal output apparatus, simulation generates the trip field sync signal, and all radiofrequency signals are carried out the synchronizing signal compression that decays at random, to simulate, the scrambling of digital cable TV;
E, the supervisory computer by front end TV station signal output apparatus are sent user code, state of a control sign indicating number and the channel code of paying into data encryption modulator packaging ciphering modulation back and are formed radiofrequency signal and be mixed into one road cable TV signal with the cable TV radiofrequency signal of scrambling through blender again;
F, the cable TV signal of scrambling, by the HFC transmission network, enter line concentration terminal descrambling controller, independent respectively control and the above user in management at least 1 family, control to each user respectively by the corresponding coaxial cable of controlling number of users of line concentration controller output, by the management of front end mandate automation, in user terminal apparatus, each user independently adopts a remote controller to carry out the selection of channel.
2, the method of the single channel output of a kind of digital simulation TV line concentration controller according to claim 1 remote control, it is characterized in that: described line concentration controller comprises casing, input port, output port, integrated circuit, described integrated circuit comprises attenuator circuit, equalizing circuit, amplifying circuit, the distribution network matrix circuit, frequency-conversion circuit, the descrambling control circuit, the demodulation decrypt circuit, data separation circuit and singlechip CPU, wherein: described line concentration controller is with behind the flatness of cable TV signal through improving cable TV signal that receives and the attenuator circuit and equalizing circuit that improve the descrambling recovery effect, enter amplifying circuit again, cable TV signal after the amplification is divided into two road signals: the one tunnel enters the distribution network matrix circuit distributes a plurality of users, sends into respectively to have I again
2The frequency-conversion circuit of the total line traffic control of C carries out frequency translation, the cable television channels of 48.5-870MHz frequency range is transformed into single channel to be exported to user terminal distribution network device, the reception head of the remote controller in the user terminal distribution network device receives the descrambling control circuit that is up to after the remote signal in the hub, sends into through the descrambling control circuit that data separation circuit carries out the separation of control data signal and shaping, amplification is sent into singlechip CPU again and handled again; Another road cable TV signal is sent into demodulator and is carried out demodulation and decrypt: address signal, current this user's behaviour in service signal and descramble signal, the data-signal that enters the isolated request channel change of singlechip CPU and earlier data respectively carries out after comprehensive distinguishing, the contrast making determining whether this user is implemented output and descrambling to the request channel program by singlechip CPU again, then export the TV signal of descrambling reduction as paying the fees, as do not pay the fees and then do not export also the not TV signal of descrambling encryption.
3, the method of the single channel output of a kind of digital simulation TV line concentration controller according to claim 1 and 2 remote control, it is characterized in that: described distribution network matrix circuit comprises distribution network matrix and switch gating matrix, the distribution network matrix circuit is connected with amplifying circuit with singlechip CPU, and be communicated with frequency-conversion circuit and descrambling control circuit, under the control of signal after attenuation equalization is amplified in singlechip CPU, what contrast distribution network matrix and singlechip CPU were sent carries out demodulation and decrypts address signal through the demodulation decrypt circuit, current this user's behaviour in service signal and descramble signal, singlechip CPU IC5-1 sends the instruction branch of whether carrying out descrambling and is clipped to the distribution network matrix circuit after examining, channel conversion circuit and descrambling control circuit, carrying out descrambling by the switch gating matrix in the distribution network matrix circuit instructs reduction TV programme or execution to close cut-off signal instruction, the descrambling control circuit relevant work descrambling or the not descrambling of not working.
4, the method of the single channel output of a kind of digital simulation TV line concentration controller according to claim 1 and 2 remote control, it is characterized in that: described frequency-conversion circuit comprises filter, amplifier, first frequency mixer, second frequency mixer, phase-locked loop, amplify through behind the filter from the signal after the processing of distribution network matrix circuit, cable TV signal with the 48.5-870MHz frequency range, again through first frequency mixer, under the control of singlechip CPU, high-frequency signal to phase-locked loop control back output 2000MHz, once more through filter, amplifier is to second frequency mixer, and the high-frequency signal with the 2000MHz frequency after filtering is amplified is downconverted into single channel output in the control of singlechip CPU.
5, the method for the single channel output of a kind of digital simulation TV line concentration controller according to claim 1 and 2 remote control, it is characterized in that: described descrambling control circuit comprises IC9-1 and IC9-2 chip, VD9-1 and VD9-2 triode, under the control of singlechip CPU, signal is imported data separation circuit carry out the separation of control data signal and shaping, amplification; And accept or transmission receives the remote signal of head from remote controller.
6, the method for the single channel output of a kind of digital simulation TV line concentration controller according to claim 1 and 2 remote control, it is characterized in that: the described data separation circuit of described data separation circuit receives the control data signal of handling from through the descrambling control circuit, and will control data signal separates and shaping, be transferred in the singlechip CPU after amplifying.
7, the method for the single channel output of according to claim 1, a kind of digital simulation TV line concentration controller remote control, it is characterized in that: described demodulator is the demodulation decrypt circuit, adopting model is the chip of IC4-1 and IC4-2, is transferred among the IC5-1 and IC5-2 of singlechip CPU after the signal demodulation deciphering after the balanced amplification of self damping in the future.
8, the method for the single channel output of a kind of digital simulation TV line concentration controller according to claim 1 remote control, it is characterized in that: what each delivery outlet of described line concentration controller was exported is single channel signals, and a line concentration controller has 2 delivery outlets at least.
9, the method for the single channel output of a kind of digital simulation TV line concentration controller according to claim 1 remote control, it is characterized in that: described front end TV station signal output apparatus is a front end scrambling part, comprise encoder, multiplexer, QAM modulator, upconverter, Frame Synchro, modulator, blender, scrambling machine, the cable TV signal that the digital simulation radiofrequency signal is formed is divided into two-way, one road signal is sent into scrambling circuit and is carried out scrambling, i.e. become the cable TV signal of scrambling after the scramble decay compression; One the tunnel sends into demodulator solves vision signal, through synchronizing separator circuit, from vision signal, separate a trip composite signal, and be that benchmark generates two paths of signals with the synchronizing separator circuit, one the tunnel sends into scrambling circuit for the scrambling control circuit carries out the cable TV signal that scramble decay is collapsed into scrambling and enters hybrid circuit, another road is the descrambling control circuit, generation descrambling control signal is directly sent into the data encryption modulator and is modulated into radiofrequency signal, after entering hybrid circuit with the cable TV signal of scrambling, amplify again and send front end to the HFC transmission network.
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