CN1615016A - Wired Tv-set programm transmitting controlling method and system - Google Patents
Wired Tv-set programm transmitting controlling method and system Download PDFInfo
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- CN1615016A CN1615016A CN 200310112054 CN200310112054A CN1615016A CN 1615016 A CN1615016 A CN 1615016A CN 200310112054 CN200310112054 CN 200310112054 CN 200310112054 A CN200310112054 A CN 200310112054A CN 1615016 A CN1615016 A CN 1615016A
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Abstract
At hub head end, the modulated program and control signals are mixed and transmitted. At house gateway, the mixed signals are received and demodulated out its control signal. The control signals are used to make on-off control and channel interference, and then the frequency domain is divided into first and second frequency range and is transmitted to the branch unit. The branch unit controls first, second frequency range radio frequency signals and generates interference signal, and then makes signal synthesis. The synthesis signals are outputted to the terminal users.
Description
Technical field
The present invention relates to cable TV transmission, propagation and reception technique, more particularly, relate to a kind of cable television program transfer control method and system that can be used for distributing and monitoring the cable television program distribution.
Background technology
The appearance of communication satellite, making becomes possibility in the TV programme that transmits simultaneously on the coaxial cable more than 50 covers.Whether the abundant catv charge of program is accepted by people, but existing charging mode is to impose uniformity without examining individual cases, and will pay dues by the expense standard of fixing as long as insert, and watch irrelevantly, has nothing to do with programme content.To the TV publisher of program is provided by cable TV network,, all can not obtain any repayment economically there from the spectator of TV programme regardless of audience ratings.Therefore the television program designing merchant can only make a profit from advertisement operation and can not acquire an advantage from program itself.This makes specialized, personalized high-quality program nobody be ready to make.The reasonable way that solves this contradiction is exactly that the cable television program content is carried out paying individuation rather than that impose uniformity without examining individual cases, solve the cable TV rating billing scheme of content-based/channel, mainly contain top box of digital machine, analog set top, and frequency-division section turn-offs three class schemes.Top box of digital machine is a kind of transitional product from the simulated television to the Digital Television in fact, Digital Television is the trend that develops in the future certainly, but digital cable customers is few at present, can not constitute public users, and pay TV needs great user base group, if do not have great customer group as the basis, the spectators of specialized, personalized channel are just fewer, and specialized, personalized program can not obtain income.The development of this several years Digital Television, top box of digital machine really can not be satisfactory, also exist standard not determine, significant problems such as the copyright royalty of foreign vendor, rely on top box of digital machine to realize that the integral body profit distance of pay TV is too remote, wherein Zui Da problem is that spectators are not positive, holds the repulsion attitude for the top box of digital machine of transition.Analog set top is not also had an optimistic view of owing to conflict with the developing direction of Digital Television always, and past promotion experience has for many years also proved the degree of difficulty of its popularization.Frequency-division section turn-offs because therefore infringement cable television channels quantity do not have successful story yet.Particularly spectators spend dozens of yuan to see a frequency range, wherein have much is that spectators are unwanted, therefore spectators have the sensation of being cheated or having gone out the unjust money that should not go out, and this sensation is very unfavorable to promoting pay TV, and frequency-division section turn-offs the demand that can not satisfy the programmer simultaneously.
Summary of the invention
The technical problem to be solved in the present invention is the method and system that proposes a kind of cable television program transmission control, and can meet the following conditions: the user is subscription programs as required; The program publisher subscribes to the transmission of control piped program according to the user; Do not increase the subscriber equipment expenditure with the existing system compatibility, thereby realize the program transmission of rational and orderly.
The above-mentioned technical problem of the present invention solves like this, construct a kind of cable television program transfer control method, between grouping front end and residential gateway, carry out the transmission of program and data mixing signal and between residential gateway and terminal use, carry out the programme signal transmission, it is characterized in that, carry out following steps at the grouping front end: 1) one or more programme signals and control signal are modulated respectively; 2) the one or more programme signals after will modulating are mixed, and with this mixed signal with mix through the modulated control signal; 3) send mixed modulation signal by wireline communication network; Carry out following steps at the residential gateway receiving terminal: 4) receive control signal and programme signal, and control signal is carried out demodulation process from the mixing of wireline communication network; 5) with the control signal that receives cable television program is carried out break-make control and channel interference; 6) the cable television program signal is divided into first frequency range and second frequency range according to frequency domain, is sent to a plurality of branch unitss arranged side by side respectively; In each branch units execution in step 7)-step 10): 7) radiofrequency signal of first frequency range is carried out switch control, will deliver to the first input end of synthesizer through the first frequency range radiofrequency signal of switch control according to control signal; 8) according to control signal the radiofrequency signal of second frequency range is carried out switch control, will deliver to second input of synthesizer through the second frequency range radiofrequency signal of switch control; 9) produce the channel interference signal under the control of control signal, and the channel interference signal is delivered to the 3rd input of synthesizer, it is synthetic to carry out signal at described synthesizer; 10) output port of described synthesizer provides through control and is arrived the terminal use by the radiofrequency signal of scramble.
Above-mentioned according to method of the present invention in, described first frequency range is 49-550MHZ, described second frequency range is 49-860MHZ.
Above-mentioned according to method of the present invention in, the described control signal of each branch units comes from described grouping front end, wherein, whether control signal not only points out to allow the user of this branch to receive the program of each channel in first frequency range at current time; Point out whether to allow the user of this branch to receive the program of each channel in second frequency range simultaneously, and comprise the data of pointing out to carry out respectively independent control for the channel of independent charge at current time.
Above-mentioned according to method of the present invention in, described residential gateway receives program inquiry when instruction, inquire about each branch port each charging channel, each frequency range on off state and Query Result is transmitted back to the query statement transmitting terminal.
Above-mentioned according to method of the present invention in, when described residential gateway receives the data query instruction, by the FPDP on the residential gateway, inquiry and read on the digital device on each port data and through ovennodulation, send the data to data query statement transmitting terminal that is collected by cable TV network.
Above-mentioned another technical problem of the present invention solves like this, construct a kind of cable television program transmission control system, it is characterized in that, comprise, TV programme transmitting terminal, a plurality of by carrying out residential gateway up, descending two-way communication between cable TV network and the transmitting terminal, each residential gateway is connected with one or more cable TV terminal devices, wherein, comprise with lower device at described TV programme transmitting terminal: the program modulating device that one or more programme signals is carried out the fundamental frequency modulation respectively; Control signal is carried out the data-modulated device of fundamental frequency modulation, the mixing arrangement that one or more programme signals after the modulation of control signal after the data-modulated device modulates and program modulating device are mixed, and the dispensing device that sends mixed signal by wireline communication network; Described residential gateway comprises with lower device: be used to receive the receiving system from the modulation signal of the mixing of wireline communication network; The modulation signal that is used for control signal that receiving system is received goes to encrypt with demodulation and is added to and controls the device that each is connected to the branch port of cable TV terminal device; The cable television program signal that receiving system is received is added in each branch that is connected to cable TV terminal device, be connected to the branch of cable TV terminal device for each, requirement according to institute's increase control signal instruction is carried out switch control to radiofrequency signal, to channel stack scrambling signal that wherein needs scrambling and the device that synthesizes.
In above-mentioned cable television program transmission control system, also comprise the signal frequency splitting device that the radiofrequency signal frequency range is divided into two frequency ranges, described control signal comprises the switching signal that is used for first frequency range, is used for the switching signal to second frequency range, and charging channel produced the control signal of interference signal, described control signal is produced by described TV programme transmitting terminal.
In above-mentioned cable television program transmission control system, each branch port comprises a synthesizer, an input of described synthesizer is used to import first frequency band signals through control, another input of described synthesizer is used to import second frequency band signals through control, the 3rd input of described synthesizer is used to import the scrambling signal through the charging channel of control, carry out signal with the Third Road signal after described synthesizer synthesizes first, second frequency band signals and synthesize, offer cable TV terminal device.
In above-mentioned cable television program transmission control system, also comprise the charging end that to communicate by letter with residential gateway.
In above-mentioned cable television program transmission control system, described residential gateway comprises that signal amplification module, power division module, control signaling reception and sending module, data processing module, frequency range cut apart and channel control module and power module, wherein, the signal amplification module comprises and is used for unidirectional amplifier that downstream signal is amplified or simultaneously to two-way amplifier up, that downstream signal carries out power adjustments; The power division module comprises the isolation and the power division that realize signal between each user, cable TV signal is distributed to each user, and the control signaling receives with sending module and is used for the uplink and downlink signal is carried out modulation and demodulation; Data processing module receives the order that provides from sub-headend, explains and carry out the order of sub-headend; Channel is cut apart and the channel control module realizes 1) to the shutoff of all TV signal full frequency bands and open-minded; 2) frequency range is divided into basic frequency range, extended frequency band and uplink band and some channel independently disturbed.
In above-mentioned cable television program transmission control system, described TV programme transmitting terminal comprises data encryption modulator-demodulator, network decoder and computer local network, the instruction that the data encryption modulator-demodulator is used for that sub-headend is provided is carried out packing data, is modulated to suitable downstream frequency, and is broadcast to residential gateway 1 by cable TV network; After described residential gateway receives the instruction of sub-headend, carry out these instructions, the modulator-demodulator of data encryption simultaneously receives answer and the data that residential gateway provides, with data demodulates and be sent to the computer local network of sub-headend, network decoder receives the decoding key from computer local network, to being decrypted from cable television program aerial or that backbone network receives, thereby the analog or digital programme signal that output is open, this program is modulated to fixing cable television channels, be transferred to residential gateway by cable TV network, described residential gateway receives the order that sub-headend provides, realization is let pass to this program and is blocked, realize order and the cancellation of user thus, and then realize pay TV cable television program; Can change the decruption key of program at any time by network decoder, so different keys can be set, thereby reach the effect of the program that oneself draws oneself up different programs to programmer or program succedaneum.Computer local network is at first realized local user's management of information, the essential information and the program ordering information that comprise the local user, accept work such as the opening an account of user, service handling, the user can carry out the order and the cancellation of program by phone (moving with fixing), voice access server in the sub-headend local network is replied user's request, and ordering information is input in the local user database.The user also can directly directly fill in a form to each service handling point, is input in the local user database by the telework platform by waiter.
Enforcement is according to cable television program transfer control method provided by the invention and system, be based on that simulated television realizes, take into account the transformation of present cable TV network and the appearance of Digital Television simultaneously, therefore huge user base is arranged, on lower cost, address the above problem.Specifically, Networking Solutions ﹠ provisioned of the present invention, compared with existing terminal solution, the significant advantage with the following aspects: 1) with low cost; 2) because the user does not do any paying, so user's acceptance height; 3) support high-end user, can enter Digital Television very naturally and need not top box of digital machine; 4) can carry out pay TV earlier, reboot the user and enter Digital Television, make the realization of pay TV need not to rely on Digital Television; 5) can conveniently realize relevant with the cable TV feature three tables business of making a copy for; 6) since equipment on cable TV network, operator is controlled, and does not resemble the terminal solution because equipment is at user's family, uncontrollable factor is a lot; 7) system can use in simulated television, Digital Television period for a long time, and the terminal solution is a transitional product.More particularly, utilize method and system of the present invention, one) catv charge can be divided into four echelons, can independently select for the user: 1) user hands over basic cable network maintenance expense to watch existing free TV programme (A section); 2) user hands over basic maintenance expense and extended channel expense (A+B section).The user watches the program overseas in free TV programme and the extended channel; 3) user hands over basic maintenance expense and extended channel expense, orders some pay channel simultaneously; 4) user hands over basic maintenance expense and extended channel expense, orders the program of some pay channel and some pay-per-view simultaneously.Two) can finish the compatibility of simulated television and Digital Television in the cable TV network: because existing cable television channels resource is abundanter, do analog television program at a part of channel resource, another part resource is done digital television program, utilize the channel control technology again, the part digital television signal is controlled, must introduce complicated CA control system the early stage that just can avoid carrying out digital television program at cable TV, thereby can allow the user select not have fully the digital television of CA, so also avoid various standards and patent royalties.When the user has also avoided moving from one place to another, the obsolete worry of digital television.Three) can carry out the pay TV business immediately: the desired user base number of pay TV is huger, if pay TV is based upon on the basis of Digital Television, may need just can commence business later in several years, and can carry out the pay TV business behind the introduction residential gateway immediately, because the introduction of pay TV business, the user has had substantial demand to the increase of television channel, therefore the user has reason and the motivation of buying digital television, and digital television has just had actual value in the heart the user's; Four) can carry out three immediately and show the business of making a copy for.Because water, electricity, gas are requirement of resident living, be the call parameter of weighing living standard.Because weather warms in recent years, weather sweltering heat in summer, peak valley appears in residential electricity consumption, the problems such as power supply that cause limiting the quantity of in limited time, in the middle of 1 year, only operation peak period hundreds of hours, all the other times all were in idle state in the installation that the whole nation is more than 2,000 ten thousand kilowatts in fact.So China's Electric Power Industry begins to introduce " Utilities Electric Co.'s dsm method " (DemandSide Management: refer to Utilities Electric Co. in order to influence or to change the load shape that user's electricity consumption is wished its generation supplier of electricity, and take effective excitation, induce measure and suitable operational mode).But the prediction electricity consumption need be gathered in real time to a large amount of ammeter datas, can finish this work easily by the RS-485 interface of residential gateway in the system of the present invention.
Description of drawings
Fig. 1 is the composition frame chart of system embodiment of the present invention;
Fig. 2 utilizes the inventive method to carry out the schematic flow sheet of cable television program transmission control;
Fig. 3 is the logic diagram of grouping front end in the system of the present invention;
Fig. 4 is the logic diagram of residential gateway in the system of the present invention;
Embodiment
As shown in Figure 1, system of the present invention mainly comprises residential gateway 200 that is installed in user's corridor and the sub-headend control system 100 that is installed in each TV station or relay base, and both connect by cable TV fiber optic network 300.Wherein, sub-headend control system 100 has program to send part and a LAN system that is used to control the program transmission, and voice access server 101, user's accounting management computer 102, data delivery server 103, network management server 104, network device management computer 105, workstation1 06 and authorization message supervisory computer 107 are arranged on the LAN system; Program sending part branch comprises the network decoder 108 that is used for pay TV, pay TV programs and ordinary tv programme are carried out video encoder 109, the modulator battle array 110 of video coding, to the data encryption modulator-demodulator of handling from the data of network device management computer 111, and, also comprise the descending optical sender 113 and the up optical receiver 114 that are connected with fiber optic network with the blender 112 that modulator array and data encryption modem signal mix.Mixed signal by blender 112 outputs sends to each residential gateway by descending optical sender 113 by optical networking 300, and being connected with many residential gateway 200 that are installed in residential building by optical node 400, two-way amplifier 500 in the fibre system, each residential gateway 200 can be connected with a plurality of television receivers 600 that are installed in the resident family room.Residential gateway provides equipment on the supervision and management cable TV network and user's means for the cable television operator, simultaneously can utilize gateway that cable TV is divided into two frequency ranges of A/B, A frequency range (first frequency range) continues to play existing free TV programme, B frequency range (second frequency range) can increase some reasonable TV programme, but needs to increase some fixing license fees.On this, from A frequency range or B frequency range, tell some channel again and do pay television channel, can do by channel and charge (PPC), also can do pay-per-use (PPV).
Carry out in the schematic flow sheet of cable television program transmission control in the inventive method of utilizing shown in Fig. 2, user data changes from two aspects, the one, operational order, for example open an account, people such as detection is the instruction of sending, the 2nd, user's request changes, and this variation can reach to wait and produce by phone, Internet and date; After user data changes, will on the local area network (LAN) of grouping front end, produce user control command, this control command can be by data encryption, modulation, be sent to residential gateway by fiber optic network, at residential gateway demodulation is carried out in the order that receives, and, comprising: 1) first frequency range is carried out switch control according to data content execution corresponding actions; 2) second frequency range is carried out switch control; 3) pay channel is carried out switch control; 4) apparatus is detected, after detection is finished testing result is sent back to; 5) port data is gathered and is returned the data that collect.
In the logic diagram of the grouping front end in the system of the present invention shown in Fig. 3, comprise the device that ordinary tv programme is encoded, modulated, the device that charging TV program is decrypted, encodes, modulates, and the mixing arrangement that pay TV and normal tv signal are mixed and mix dispensing device, also comprise customer data base and the device that the user data database data is encrypted and modulated, the passback data from residential gateway also are provided with passback separate and receiving system.The grouping front end mainly is made up of data encryption modulator-demodulator, network decoder and computer local network and application software.The data encryption modulator-demodulator is mainly finished the instruction that sub-headend provides and is carried out packing data, is modulated to suitable downstream frequency, and is broadcast to residential gateway by cable TV network, after residential gateway receives the instruction of sub-headend, carries out these instructions.Simultaneously the data encryption modulator-demodulator receives answer and the data that residential gateway provides, with data demodulates and be sent to the computer local network of sub-headend.Network decoder receives the decoding key from the computer local area network, to being decrypted from cable television program aerial or that backbone network receives, thereby the programme signal that output is open, this signal can be the simulation also can be digital, this program is modulated to fixing cable television channels, be transferred to residential gateway by cable TV network, residential gateway receives the order that sub-headend provides, realization is let pass to this program and is blocked, realize order and the cancellation of user thus, and then realize pay TV cable television program.Can change the decruption key of program at any time by network decoder, so different keys can be set, thereby reach the effect of the program that oneself draws oneself up different programs to programmer or program succedaneum.Computer local network is at first realized local user's management of information, the essential information and the program ordering information that comprise the local user, accept work such as the opening an account of user, service handling, the user can carry out the order and the cancellation of program by phone (moving with fixing), voice access server in the sub-headend local network is replied user's request, and ordering information is input in the local user database.The user also can directly directly fill in a form to each service handling point, is input in the local user database by the telework platform by waiter.If the user expires and do not pay dues or the user orders program temporarily, can cause that all the database of sub-headend changes.Computer local network is the variation of monitor database constantly, when the customer data base state changes, generation is to the control command of residential gateway, output a control signal to the data encryption modulator-demodulator by network equipment management server, thereby realize control and generation corresponding action residential gateway.Pass through customer data base, sub-headend can be provided with the rate of different programs, preferential on some period in other words conj.or perhaps to some client also can be set, account software will produce detailed charge information according to being provided with of sub-headend, this charge information not only provides the expense that some users should hand over what is, simultaneously also comprise the object of collecting of being paid dues, as the investor of certain program distributing and releasing corporation, certain program agent and networking.This information is submitted to corresponding bank, can realizes the withholing of user account number realized giving out money according to a certain proportion of some expense simultaneously.Concentrate and the off-line management of data realize at system end, realizes that by a data delivery server backup of data and long-range off-line submit at sub-headend.Just can what be from the order situation of a place (system end) understanding program and the income that should obtain in the concentrated area for a program provider or program agent like this.
Fig. 4 has illustrated the logical construction of residential gateway among the present invention, because residential gateway in use 7 * 24 hours is online, simultaneously be again to connect resident family, therefore, can finish the data collection task relevant with resident family by the RS-485 interface on the residential gateway on the one hand, the most direct is exactly the collection of water meter, ammeter, gas meter data and the collection of house safety information; Residential gateway is realized the two-way reliable transmission of control signal on the other hand.Because residential gateway is cable TV last equipment before registering one's residence, traditional cable TV tree structure is transformed into tree-star structure, therefore residential gateway has replaced traditional branch distributor, and simultaneously residential gateway has added the function that network management, user channel control etc. meet modern cable TV trend.Its position in system of the present invention goes out as shown in Figure 1.
Residential gateway hardware description is mainly cut apart with channel control module, power module by signal amplification module, power division module, control signaling reception and sending module, data processing module, frequency range and is formed jointly as shown in Figure 4.
The functional description of each module is as follows:
1, signal amplification module (can select) is according to the concrete condition of cable TV network, can be unidirectional amplification, also can be two-way amplification, if two-way amplification, can realize upward signal is carried out power adjustments, reach the effect of control data feedback channel level and return noise.The signal amplification module also compensates the loss of residential gateway to cable TV signal itself simultaneously, and assurance enters the quality and the level of the cable TV signal of user's family.
2, power division module
Cable TV signal is distributed to each user, realize the isolation and the power division of signal between each user.
3, the control signaling receives and sending module
The transmission of control signaling mainly is a fsk signal, and concrete coded format can have a variety of, for example adopts international CCIR#1, the pocsag code agreement.This module is mainly carried out modulation and demodulation to the uplink and downlink signal, and converts the signal format that microprocessor can receive and send to.
4, data processing module
Data processing module is the core of residential gateway, and it receives the order that sub-headend provides, and explains and carry out the order of sub-headend, and to the desired test command of cable TV network safety, and the instruction that needs to answer is answered.Sub-headend is tested certain equipment does not have answer signal in a period of time, show that this equipment may break away from network, need manually scout and handle, therefore all residential gateway that can monitor on the cable TV network in 7 * 24 hours of sub-headend, simultaneously because residential gateway is the end-equipment of cable TV, as long as residential gateway energy operate as normal, the proof circuit is normal, if some residential gateway are undesired, illustrating near this gateway has problem, just can monitor cable TV network in 7 * 24 hours by these sub-headends.
Data processing module also has 485 interfaces of a standard, the security detection equipment of water meter, ammeter, gas meter or resident family in its inquiry and the control corridor, these information are sent to sub-headend by cable TV, and sub-headend sends corresponding mechanism to after these data are concluded, put in order.
5, channel is cut apart and the channel control module
This module at first is to realize that shutoff to all TV signal full frequency bands with open-minded, carries out the full frequency band shutoff for the user who does not pay the fees.Next is that the realization frequency range is cut apart, be divided into basic frequency range, extended frequency band and uplink band, can realize shutoff (perhaps signal attenuation) to extended frequency band and uplink band, the user does not pay the fees to extended frequency band and just can close extended frequency band, the user does not carry out the business of uplink band and just can close uplink band, reduces the noise of uplink band.The 3rd function is independently to disturb some channel, what play on these channels is pay TV, if the user has ordered certain channel, the signal of this channel just directly passes through, the user just can watch this channel, if the user does not order or do not pay the fees, just the signal with this channel disturbs, and the user can't normally watch this channel.
6, power module
Power module can pass through the 220V civil power, and perhaps the 60V of cable TV band itself exchanges, and powers for whole residential gateway.
Residential gateway has been finished the control to cable TV subscriber's end, and as required the TV signal content is managed, it has solved can't be to the problem of content of TV program charge and the problem of management of cable TV network, also will arrive the center simultaneously, expand the professional and income of TV station with the closely-related data acquisition of resident family.
The system end of cable television program distribution system has a large database, comprises real-time copyright authorization and charging center, externally is a website.The program supplier can recognize from the website, how many spectators the program that oneself provides has in a certain place, there are how many people ordering, how many overall lot-sizes is, how many available incomes is, the program supplier can also set preferential situation, in the information such as preferential strategy of what period, what area, what program.Database backups (offline backup) to the data of various places, is organized into whole database simultaneously, practical working situation that can remote inquiry various places residential gateway.System end manages the copyright of each program simultaneously, and the decruption key of program is sent to each sub-headend by existing network, and programme content is distributed to each sub-headend after encrypting, and both approach can be consistent, also can be inconsistent.
Claims (10)
1, a kind of cable television program transfer control method, between grouping front end and residential gateway, carry out the transmission of program and data mixing signal and between residential gateway and terminal use, carry out the programme signal transmission, it is characterized in that, carry out following steps: 1) one or more programme signals and control signal are carried out the fundamental frequency modulation respectively at the grouping front end; 2) the one or more programme signals after will modulating are mixed, and with this mixed signal with mix through the modulated control signal; 3) send mixed modulation signal by wireline communication network; Carry out following steps at the residential gateway receiving terminal: 4) receive control signal and programme signal, and control signal is carried out demodulation process from the mixing of wireline communication network; 5) with the control signal that receives cable television program is carried out break-make control and channel interference; 6) the cable television program signal frequency domain is divided into first frequency range and second frequency range, is sent to a plurality of branch unitss arranged side by side respectively; In each branch units execution in step 7)-step 10): 7) radiofrequency signal of first frequency range is carried out switch control, will deliver to the first input end of synthesizer through the first frequency range radiofrequency signal of switch control according to control signal; 8) according to control signal the radiofrequency signal of second frequency range is carried out switch control, will deliver to second input of synthesizer through the second frequency range radiofrequency signal of switch control; 9) produce the channel interference signal under the control of control signal, and the channel interference signal is delivered to the 3rd input of synthesizer, it is synthetic to carry out signal at described synthesizer; 10) output port of described synthesizer provides through control and is arrived the terminal use by the radiofrequency signal of scramble.
According to the described method of claim 1, it is characterized in that 2, described first frequency range is 49-550MHZ, described second frequency range is 49-860MHZ.
3, according to the described method of claim 1, it is characterized in that, the described control signal of each branch units comes from described grouping front end, and wherein, whether control signal not only points out to allow the user of this branch to receive the program of each channel in first frequency range at current time; Point out whether to allow the user of this branch to receive the program of each channel in second frequency range simultaneously, and comprise the data of pointing out to carry out respectively independent control for the channel of independent charge at current time.
According to the described method of claim 1, it is characterized in that 4, described residential gateway receives program inquiry when instruction, inquire about each branch port each charging channel, each frequency range on off state and Query Result is transmitted back to the query statement transmitting terminal.
5, according to the described method of claim 1, it is characterized in that, when described residential gateway receives the data query instruction, by the FPDP on the residential gateway, inquiry and read on the digital device on each port data and through ovennodulation, send the data to data query statement transmitting terminal that is collected by cable TV network.
6, a kind of cable television program transmission control system, it is characterized in that, comprise, grouping front end, a plurality of by carrying out residential gateway up, descending two-way communication between cable TV network and the transmitting terminal, each residential gateway is connected with one or more cable TV terminal devices, wherein, comprise with lower device at described grouping front end: the program modulating device that one or more programme signals is carried out the fundamental frequency modulation respectively; Control signal is carried out the data-modulated device of fundamental frequency modulation, the mixing arrangement that one or more programme signals after the modulation of control signal after the data-modulated device modulates and program modulating device are mixed, and the dispensing device that sends mixed signal by wireline communication network; Described residential gateway comprises with lower device: be used to receive the receiving system from the modulation signal of the mixing of wireline communication network; The modulation signal that is used for control signal that receiving system is received goes to encrypt with demodulation and is added to and controls the device that each is connected to the branch port of cable TV terminal device; The cable television program signal that receiving system is received is added in each branch that is connected to cable TV terminal device, be connected to the branch of cable TV terminal device for each, requirement according to institute's increase control signal instruction is carried out switch control to radiofrequency signal, to channel stack scrambling signal that wherein needs scrambling and the device that synthesizes.
7, cable television program transmission control system according to claim 6, it is characterized in that, also comprise the signal frequency splitting device that the radiofrequency signal frequency range is divided into two frequency ranges, described control signal comprises the switching signal that is used for first frequency range, is used for the switching signal to second frequency range, and charging channel produced the control signal of interference signal, described control signal is produced by described grouping front end.
8, cable television program transmission control system according to claim 7, it is characterized in that, each branch port comprises a synthesizer, an input of described synthesizer is used to import first frequency band signals through control, another input of described synthesizer is used to import second frequency band signals through control, the 3rd input of described synthesizer is used to import the scrambling signal through the charging channel of control, described synthesizer is with first, carry out signal with the Third Road signal after second frequency band signals synthesizes and synthesize, offer cable TV terminal device.
9, according to any one described cable television program transmission control system of claim 6-8, it is characterized in that, also comprise the charging end that to communicate by letter with residential gateway, described residential gateway comprises that signal amplification module, power division module, control signaling reception and sending module, data processing module, frequency range cut apart and channel control module and power module, wherein, the signal amplification module comprises and is used for unidirectional amplifier that downstream signal is amplified or simultaneously to two-way amplifier up, that downstream signal carries out power adjustments; The power division module comprises the isolation and the power division that realize signal between each user, cable TV signal is distributed to each user, and the control signaling receives with sending module and is used for the uplink and downlink signal is carried out modulation and demodulation; Data processing module receives the order that provides from sub-headend, explains and carry out the order of sub-headend; Channel is cut apart and the channel control module realizes 1) to the shutoff of all TV signal full frequency bands and open-minded; 2) frequency range is divided into basic frequency range, extended frequency band and uplink band and some channel independently disturbed.
10, according to any one described cable television program transmission control system of claim 6-8, it is characterized in that, described grouping front end comprises data encryption modulator-demodulator, network decoder and computer local network, the data encryption modulator-demodulator is used for the instruction that the grouping front end provides is carried out packing data, is modulated to suitable downstream frequency, and is broadcast to residential gateway by cable TV network; After described residential gateway receives the instruction of sub-headend, carry out these instructions, the modulator-demodulator of data encryption simultaneously receives answer and the data that residential gateway provides, with data demodulates and be sent to the computer local network of sub-headend, network decoder receives the decoding key from computer local network, to being decrypted from cable television program aerial or that backbone network receives, thereby the analog or digital programme signal that output is open, this program is modulated to fixing cable television channels, be transferred to residential gateway by cable TV network, described residential gateway receives the order that sub-headend provides, realization is let pass to this program and is blocked, realize order and the cancellation of user thus, and then realize pay TV cable television program; Can change the decruption key of program at any time by network decoder, so different keys can be set, thereby reach the effect of the program that oneself draws oneself up different programs to programmer or program succedaneum.Computer local network 203 is at first realized local user's management of information, the essential information and the program ordering information that comprise the local user, accept work such as the opening an account of user, service handling, the user can carry out the order and the cancellation of program by phone (moving with fixing), voice access server in the sub-headend local network is replied user's request, and ordering information is input in the local user database.The user also can directly directly fill in a form to each service handling point, is input in the local user database by the telework platform by waiter.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 200310112054 CN1615016A (en) | 2003-11-03 | 2003-11-03 | Wired Tv-set programm transmitting controlling method and system |
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| CN 200310112054 CN1615016A (en) | 2003-11-03 | 2003-11-03 | Wired Tv-set programm transmitting controlling method and system |
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| CN1615016A true CN1615016A (en) | 2005-05-11 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105898393A (en) * | 2015-12-29 | 2016-08-24 | 乐视网信息技术（北京）股份有限公司 | Media data play control method and system, client and server |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105898393A (en) * | 2015-12-29 | 2016-08-24 | 乐视网信息技术（北京）股份有限公司 | Media data play control method and system, client and server |
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