CN101790028B - System and method for returning data - Google Patents
System and method for returning data Download PDFInfo
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- CN101790028B CN101790028B CN2010101125241A CN201010112524A CN101790028B CN 101790028 B CN101790028 B CN 101790028B CN 2010101125241 A CN2010101125241 A CN 2010101125241A CN 201010112524 A CN201010112524 A CN 201010112524A CN 101790028 B CN101790028 B CN 101790028B
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Abstract
The embodiment of the invention discloses a system and a method for returning data, belonging to the field of cable television. The system comprises a set-top box provided with an IC (integrated circuit) card interface, and a cable modem, wherein the set-top box is used for generating data to be returned according to the service requirement and sending the data to be returned to the cable modem via the IC card interface; and the cable modem is used for modulating or demodulating the data to be returned into radio-frequency signals and returning the radio-frequency signals via a radio-frequency port. The method comprises the following steps that: the set-top box generates data to be returned according to the service requirement and sends the data to be returned to the cable modem via the IC card interface; and the cable modem modulates or demodulates the received data to be returned into radio-frequency signals and returns the radio-frequency signals via a radio-frequency port. The scheme of the invention has the advantages of convenient transformation and low cost and rapidly promotes the existing network bidirectional transformation.
Description
Technical field
The present invention relates to the cable TV field, particularly a kind of system and method for data passback.
Background technology
At present, the development of China's cable television network is increasing with the speed at nearly 1000 general-purpose families in every year, makes cable television network become one of largest network of China.Along with the continuous development of science and technology, the type service that cable television network offers the user is also more and more, can carry out the program request etc. of program by set-top box as the user.But in the prior art, the set-top box great majority that exist in the cable TV network all are the set-top box that is added when the Digital Television translation, mostly be unidirectional set-top box, do not possess the passage of data such as passback user program request, make the user of a lot of use one-way set-top boxes can not get due service.
The passage that if desired one-way set-top box in the existing TV network is added the passback data, the following several method of general employing: operator reclaims existing set-top box from each user, and the generation manufacturer that transfers to set-top box handles the set-top box that reclaims, again deliver to operator after increasing return path, deliver to each user place again; Perhaps, can also resend new bi-directional set-top box and give the user, replace original one-way set-top box.But above-mentioned prior art all exists great drawback, and long, cost of, cycle loaded down with trivial details as the enforcement process is than problems such as height.
Summary of the invention
In order to make existing one-way set-top box also possess the function of passback data, and simple and easy to do as far as possible, with low cost, the embodiment of the invention provides a kind of system and method for data passback.
On the one hand, the embodiment of the invention provides a kind of system of data passback, and described system comprises: the set-top box and the cable modem that have the IC-card interface;
Described set-top box is used for producing data to be returned according to business demand, and by described IC-card interface data described to be returned is sent to described cable modem;
Described cable modem is used to receive data described to be returned, and after its modulation is radiofrequency signal, by its prevention at radio-frequency port described radiofrequency signal is returned.
Described cable modem comprises IC-card keyset, processor module and rf modulations demodulation module;
Described IC-card keyset links to each other with the IC-card interface of described set-top box, and draws power supply signal line, ground signalling line and input/output signal line at least from the IC-card interface of described set-top box;
Described processor module is used for receiving data to be returned from described input/output signal line, sends to described rf modulations demodulation module after data described to be returned are handled;
Described rf modulations demodulation module is used for obtaining power supply signal from described power supply signal line, and obtain ground signalling from described ground signalling line, when receiving the data of described processor module transmission, with the described data modem that receives is radiofrequency signal, and by its prevention at radio-frequency port described radiofrequency signal is returned.
Described system also comprises IC-card;
Accordingly, described cable modem also comprises the IC-card interface, and described IC-card links to each other with described cable modem by the IC-card interface of described cable modem;
Described IC-card keyset is also drawn reseting signal line and clock cable from the IC-card interface of described set-top box, and the IC-card interface of described cable modem links to each other with clock cable with described power supply signal line, ground signalling line, reseting signal line, input/output signal line respectively;
Described IC-card is used for obtaining from described reseting signal line by the IC-card interface of described cable modem the reset signal of described set-top box, when described reset signal indicated described IC-card to receive data, described IC-card received data from described input/output signal line.
Described processor module also is used for: the reset signal that obtains described set-top box from described reseting signal line;
Accordingly, when described reset signal indicates described processor module to carry out data communication, receive data to be returned from described input/output signal line.
Described reset signal is a logic level;
When described logic level is high level, be used to indicate described processor module to carry out data communication; When described logic level is low level, be used to indicate described IC-card to carry out data communication;
Perhaps,
When described logic level is low level, be used to indicate described processor module to carry out data communication; When described logic level is high level, be used to indicate described IC-card to carry out data communication.
On the other hand, the embodiment of the invention provides a kind of method of utilizing said system to carry out the data passback, and described method comprises:
Described set-top box produces data to be returned according to business demand, and by described IC-card interface data described to be returned is sent to described cable modem;
After the data modem described to be returned that described cable modem will receive is radiofrequency signal, described radiofrequency signal is returned by its prevention at radio-frequency port.
Describedly data described to be returned are sent to described cable modem, specifically comprise by described IC-card interface:
Described set-top box is sent to described IC-card interface with data described to be returned;
Control the reseting signal line that described cable modem is drawn from described IC-card interface, make the reset signal on the described reseting signal line indicate the processor module of described cable modem to receive data;
And the input/output signal line that data described to be returned are drawn from described IC-card interface at described cable modem is sent to the processor module of described cable modem.
Described reset signal is a logic level;
When described logic level is high level, be used to indicate described processor module to carry out data communication; Perhaps,
When described logic level is low level, be used to indicate described processor module to carry out data communication.
The data modem described to be returned that described cable modem will receive is a radiofrequency signal, specifically comprises:
The data to be returned that the processing module of described cable modem will receive send to the rf modulations demodulation module of described cable modem, and the data modem to be returned that described rf modulations demodulation module will receive becomes radiofrequency signal.
Described method also comprises:
Described cable modem passes through its prevention at radio-frequency port downlink data receiving, and by described IC-card interface described downlink data is sent to described set-top box.
The beneficial effect of the technical scheme that the embodiment of the invention provides:
IC-card interface by set-top box will be to be returned data send to cable modem, and after being radiofrequency signal by the data modem that cable modem will be to be returned, return by its prevention at radio-frequency port.This method of utilizing IC-card interface striking machine top box passback path need not to change the hardware of existing one-way set-top box, only needs an external cable modem get final product, have transform conveniently, cost is low, promotes advantages such as existing network bi-directionalization fast.Simultaneously, can also realize the reception of downlink data, realize the both-way communication of one-way set-top box.
Description of drawings
Fig. 1 is the system configuration schematic diagram of the data passback that provides of one embodiment of the present of invention;
Fig. 2 is the structural representation of the cable modem that provides of an alternative embodiment of the invention;
Fig. 3 is the cable modem that provides of an alternative embodiment of the invention and the structural representation of IC-card;
Fig. 4 is the system configuration schematic diagram of the data passback that provides of an alternative embodiment of the invention;
Fig. 5 is the method flow diagram of the data passback that provides of an alternative embodiment of the invention;
Fig. 6 is the system configuration schematic diagram of the data passback that provides of an alternative embodiment of the invention.
Embodiment
For making the purpose, technical solutions and advantages of the present invention clearer, embodiment of the present invention is described further in detail below in conjunction with accompanying drawing.
Embodiment 1
First embodiment of the present invention provides a kind of system of data passback, and referring to Fig. 1, this system comprises: the set-top box 101 and the cable modem 102 that have the IC-card interface;
Wherein, set-top box 101 is used for producing data to be returned according to business demand, and sends to cable modem 102 by the data that the IC-card interface will be to be returned;
Here said " passback " can be understood as user side and sends data to the TV network side.
First embodiment of the present invention provides a kind of system of data passback, IC-card interface by set-top box will be to be returned data send to cable modem, and after being radiofrequency signal by the data modem that cable modem will be to be returned, return by its prevention at radio-frequency port.This method of utilizing IC-card interface striking machine top box passback path need not to change the hardware of existing one-way set-top box, only needs an external cable modem get final product, have transform conveniently, cost is low, promotes advantages such as existing network bi-directionalization fast.
Embodiment 2
Second embodiment of the present invention implements on the basis of first embodiment, second embodiment of the present invention provides a kind of system of data passback, referring to shown in Figure 1, this system can comprise: the set-top box 101 and the cable modem 102 that have the IC-card interface;
Wherein, set-top box 101 produces data to be returned according to business demand, and sends to cable modem 102 by the data that the IC-card interface will be to be returned;
Under a kind of execution mode, referring to Fig. 2, cable modem 102 can comprise: IC-card keyset 102A, processor module 102B and rf modulations demodulation module 102C;
Wherein, IC-card keyset 102A links to each other with the IC-card interface of set-top box 101, and draws power supply signal line (VCC), ground signalling line (GND) and input/output signal line (I/O) at least from the IC-card interface of set-top box 101;
Rf modulations demodulation module 102C obtains power supply signal from the power supply signal line, and obtain ground signalling from the ground signalling line, when receiving the data of processor module 102B transmission, be radiofrequency signal with the data modem that receives, and radiofrequency signal returned by its prevention at radio-frequency port.
Under a kind of execution mode, referring to Fig. 3, the system of this data passback can also comprise IC-card 103;
Accordingly, cable modem 102 also comprises IC-card interface 102D, and this IC-card 103 links to each other with cable modem 102 by the IC-card interface 102D of cable modem 102;
IC-card keyset 102A from the IC-card interface of set-top box 101 also need to draw, reseting signal line (RST) and clock cable (CLK), the IC-card interface 102D of cable modem 102 links to each other with clock cable with power supply signal line, ground signalling line, reseting signal line, input/output signal line;
IC-card 103 obtains the reset signal that set-top box 101 sends by the IC-card interface 102D of cable modem 102, and when reset signal indication IC-card 103 received data, IC-card received data from the input/output signal line.
Accordingly, processor module 102B also is used for: the reset signal that obtains set-top box 101 from reseting signal line; When if reset signal instruction processorunit module 101B carries out data communication, then receive data to be returned from the input/output signal line.
Wherein, in embodiment provided by the invention, reset signal is a logic level;
When logic level is high level, be used to indicate set-top box and processor module 102B to carry out data communication; When logic level is low level, be used to indicate set-top box and IC-card 103 to carry out data communication;
Perhaps,
When logic level is low level, be used to indicate set-top box and processor module 102B to carry out data communication; When logic level is high level, be used to indicate set-top box and IC-card 103 to carry out data communication.
Second embodiment of the present invention provides a kind of system of data passback, IC-card interface by set-top box will be to be returned data send to cable modem, and after being radiofrequency signal by the data modem that cable modem will be to be returned, return by its prevention at radio-frequency port; Simultaneously, provide the IC-card interface to IC-card by cable modem, and can be by the reset signal on the multiplexing reseting signal line, the co-ordination between realization and the cable modem.This method of utilizing IC-card interface striking machine top box to return path need not to change the hardware of existing one-way set-top box, on the function basis that guarantees original set-top box and IC-card exchanges data, only need an external cable modem to get final product, have transform convenient, cost is low, promotes advantages such as existing network bi-directionalization fast.
Embodiment 3
Third embodiment of the invention is to implement on the basis of first embodiment or second embodiment, a kind of system of data passback is provided, referring to Fig. 4, this system comprises: the set-top box 101, cable modem 102 and the IC-card 103 that have the IC-card interface;
Wherein, set-top box 101 comprises host CPU 101A and IC-card interface 101B at least; Cable modem 102 comprises IC-card keyset 102A, IC-card interface 102B, processor module 102C and rf modulations demodulation module 102D at least.
IC-card 103 links to each other with cable modem 102 by the IC-card interface 102B of cable modem 102, and cable modem 102 links to each other with the IC-card interface 101B of set-top box 101 by its IC-card keyset 102A.The IC-card keyset 102A of cable modem 102 draws following holding wire: VCC (power supply), GND (ground connection), RST (resetting), CLK (clock) and I/O (inputoutput data) from the IC-card interface 101B of set-top box 101.The holding wire of wherein, drawing all links to each other with VCC, GND, RST, CLK and the I/O holding wire of the IC-card interface 102B of cable modem 102; The processor module 102C of cable modem 102 links to each other with the I/O holding wire with the RST holding wire, and output signal to rf modulations demodulation module 102D, rf modulations demodulation module 102D links to each other with the VCC holding wire with the GND holding wire, and can pass through its prevention at radio-frequency port emitting radio frequency signal.
When this system carries out the data passback, set-top box 101 is a main frame, the processor module 102C of cable modem 102, IC-card 103 are slave, it is to carry out communication with IC-card 103 that the host CPU 101A of set-top box 101 indicates by the level of control RST signal, and still the processor module 102C with cable modem 102 carries out communication.
For example, when the RST signal was high level 1, host CPU 101A provided CLK signal for IC-card 103, was carrying out communication by I/O mouth and IC-card 103; And the processor module 102C of cable modem 102 detects the RST signal when being high level 1, discharges the I/O mouth that is connected on its communication pin, not with host CPU 101A communication.
When the RST signal was low level 0, IC-card 103 was in reset mode automatically, discharged the I/O mouth that is connected on its communication pin, not with host CPU 101A communication; And the processor module 102C of cable modem 102 detects the RST signal when being low level 0, take over the I/O mouth that its communication pin connects, carry out communication with host CPU 101A, and the data that receive are sent to rf modulations demodulation module 102D, after rf modulations demodulation module 102D is modulated into radiofrequency signal with the signal that receives, be transferred to headend equipment by its prevention at radio-frequency port, realize the retransmission function of data on the set-top box 101.And, the radiofrequency signal that prevention at radio-frequency port can also receiving front-end equipment transmits, and undertaken being transferred to host CPU 101A after the demodulation by rf modulations demodulation module 102D, thereby the host CPU 101A of set-top box 101 and the data interaction between the headend equipment finished.Headend equipment wherein can be the general designation of gateway, optical fiber, ethernet device, front-end server equipment etc.
Certainly, when also can the RST signal being low level, host CPU 101A is that IC-card 103 carries out communication, the processor module 102C of cable modem 102 not with host CPU 101A communication; When the RST signal was high level, host CPU 101A and processor module 102C carried out communication, did not carry out communication with IC-card 103.
What also need to further specify is, because host CPU 101A can obtain its ROMPaq from headend equipment or other remote service equipment by existing television network, the user can obtain the method for corresponding data passback by the program of upgrading CPU101A.
The 3rd embodiment of the present invention provides a kind of system of data passback, IC-card interface by set-top box will be to be returned data send to cable modem, and after being radiofrequency signal by the data modem that cable modem will be to be returned, return by its prevention at radio-frequency port; Simultaneously, provide the IC-card interface to IC-card by cable modem, and can be by the reset signal on the multiplexing reseting signal line, the co-ordination between realization and the cable modem.This method of utilizing IC-card interface striking machine top box passback path need not to change the hardware of existing one-way set-top box, only needs an external cable modem get final product, have transform conveniently, cost is low, promotes advantages such as existing network bi-directionalization fast.
Embodiment 4
The 4th embodiment of the present invention realizes on the system-based that any embodiment provides in first three embodiment, and a kind of method of data passback is provided, and referring to Fig. 5, this method comprises:
501: set-top box produces data to be returned according to business demand, and sends to cable modem by the data that its IC-card interface will be to be returned;
502: after the data modem to be returned that cable modem will receive is radiofrequency signal, radiofrequency signal is returned by its prevention at radio-frequency port.
Under a kind of execution mode, the data that the IC-card interface will be to be returned of passing through in the step 501 send to cable modem, specifically comprise:
(1) data that set-top box will be to be returned are sent to its IC-card interface;
(2) the control line cable modem reseting signal line of drawing from the IC-card interface makes the processor module of the reset signal index line cable modem on the reseting signal line receive data;
(3) and online data cable modem that will be the to be returned input/output signal line of drawing from the IC-card interface send to the processor module of cable modem.
Wherein, reset signal is a logic level;
When logic level is high level, be used to indicate processor module to carry out data communication; Perhaps,
When logic level is low level, be used to indicate processor module to carry out data communication.
Under a kind of execution mode, the data modem to be returned that the cable modem in the step 502 will receive is a radiofrequency signal, specifically comprises:
The data to be returned that the processing module of cable modem will receive send to the rf modulations demodulation module of cable modem, and the data modem to be returned that the rf modulations demodulation module will receive becomes radiofrequency signal.
Under a kind of execution mode, be compared in the prior art by the tuner downlink data receiving on the set-top box, the method that present embodiment provides can also comprise the steps:
Cable modem passes through its prevention at radio-frequency port downlink data receiving, and by the IC-card interface downlink data is sent to set-top box.Wherein, downlink data specifically refers to the data that headend equipment is handed down to set-top box.
This just makes the method for the data passback that the embodiment of the invention provides not only can realize the data passback, can also realize the descending reception of data, and for set-top box, the binary channels that has realized downlink data receives, referring to Fig. 6, the tuner that the big data on flows signal of common cable TV downlink broadcast signal and two-way services (for example VOD program request etc.) can pass through on cable modem prevention at radio-frequency port, cable modem, cable modem radio-frequency (RF) output end mouth, the set-top box receives; And the downlink data of two-way interactive business (for example VOD program request etc.) can reach set-top box through the IC-card interface of the prevention at radio-frequency port of cable modem, cable modem, set-top box.
The 4th embodiment of the present invention provides a kind of method of data passback, IC-card interface by set-top box will be to be returned data send to cable modem, and after being radiofrequency signal by the data modem that cable modem will be to be returned, return by its prevention at radio-frequency port.This method of utilizing IC-card interface striking machine top box passback path need not to change the hardware of existing one-way set-top box, only needs an external cable modem get final product, have transform conveniently, cost is low, promotes advantages such as existing network bi-directionalization fast.Simultaneously, can also realize the reception of downlink data, realize the both-way communication of one-way set-top box.
The above only is preferred embodiment of the present invention, and is in order to restriction the present invention, within the spirit and principles in the present invention not all, any modification of being done, is equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. the system of a data passback is characterized in that described system comprises: the set-top box and the cable modem that have the IC-card interface;
Described set-top box is used for producing data to be returned according to business demand, and by described IC-card interface data described to be returned is sent to described cable modem;
Described cable modem is used to receive data described to be returned, and after it is modulated to radiofrequency signal, by its prevention at radio-frequency port described radiofrequency signal is returned.
2. the system as claimed in claim 1 is characterized in that, described cable modem comprises IC-card keyset, processor module and rf modulations demodulation module;
Described IC-card keyset links to each other with the IC-card interface of described set-top box, and draws power supply signal line, ground signalling line and input/output signal line at least from the IC-card interface of described set-top box;
Described processor module is used for receiving data to be returned from described input/output signal line, sends to described rf modulations demodulation module after data described to be returned are handled;
Described rf modulations demodulation module is used for obtaining power supply signal from described power supply signal line, and obtain ground signalling from described ground signalling line, when receiving the data of described processor module transmission, with the described data-modulated that receives is radiofrequency signal, and by its prevention at radio-frequency port described radiofrequency signal is returned.
3. system as claimed in claim 2 is characterized in that described system also comprises IC-card;
Accordingly, described cable modem also comprises the IC-card interface, and described IC-card links to each other with described cable modem by the IC-card interface of described cable modem;
Described IC-card keyset is also drawn reseting signal line and clock cable from the IC-card interface of described set-top box, and the IC-card interface of described cable modem links to each other with clock cable with described power supply signal line, ground signalling line, reseting signal line, input/output signal line respectively;
Described IC-card is used for obtaining from described reseting signal line by the IC-card interface of described cable modem the reset signal of described set-top box, when described reset signal indicated described IC-card to receive data, described IC-card received data from described input/output signal line.
4. system as claimed in claim 3 is characterized in that, described processor module also is used for: the reset signal that obtains described set-top box from described reseting signal line; If described reset signal indicates described processor module to carry out data communication, receive data to be returned on the then described input/output signal line.
5. as claim 3 or 4 described systems, it is characterized in that described reset signal is a logic level;
When described logic level is high level, be used to indicate described processor module to carry out data communication; When described logic level is low level, be used to indicate described IC-card to carry out data communication;
Perhaps,
When described logic level is low level, be used to indicate described processor module to carry out data communication; When described logic level is high level, be used to indicate described IC-card to carry out data communication.
6. one kind is utilized the described system of claim 1 to carry out the method that data return, and it is characterized in that described method comprises:
Described set-top box produces data to be returned according to business demand, and by described IC-card interface data described to be returned is sent to described cable modem;
After the data-modulated described to be returned that described cable modem will receive is radiofrequency signal, described radiofrequency signal is returned by its prevention at radio-frequency port.
7. method as claimed in claim 6 is characterized in that, describedly by described IC-card interface data described to be returned is sent to described cable modem, specifically comprises:
Described set-top box is sent to described IC-card interface with data described to be returned;
Control the reseting signal line that described cable modem is drawn from described IC-card interface, make the reset signal on the described reseting signal line indicate the processor module of described cable modem to receive data;
And the input/output signal line that data described to be returned are drawn from described IC-card interface at described cable modem is sent to the processor module of described cable modem.
8. method as claimed in claim 7 is characterized in that, described reset signal is a logic level;
When described logic level is high level, be used to indicate described processor module to carry out data communication; Perhaps,
When described logic level is low level, be used to indicate described processor module to carry out data communication.
9. method as claimed in claim 7 is characterized in that, the data-modulated described to be returned that described cable modem will receive is a radiofrequency signal, specifically comprises:
The data to be returned that the processing module of described cable modem will receive send to the rf modulations demodulation module of described cable modem, and the data-modulated to be returned that described rf modulations demodulation module will receive becomes radiofrequency signal.
10. method as claimed in claim 7 is characterized in that, described method also comprises:
Described cable modem passes through its prevention at radio-frequency port downlink data receiving, and by described IC-card interface described downlink data is sent to described set-top box.
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| CN2010101125241A CN101790028B (en) | 2010-02-12 | 2010-02-12 | System and method for returning data |
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| CN100464512C (en) * | 2006-11-21 | 2009-02-25 | 金纯� | Two-way incremental service realizing method based on digital TV one-way set-top box |
| CN100579017C (en) * | 2007-01-12 | 2010-01-06 | 深圳市同洲电子股份有限公司 | User terminal system of cable modem and its data transmission method |
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