CN103227943B - The guard method of a kind of Set Top Box, equipment and system - Google Patents
The guard method of a kind of Set Top Box, equipment and system Download PDFInfo
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- CN103227943B CN103227943B CN201310129394.6A CN201310129394A CN103227943B CN 103227943 B CN103227943 B CN 103227943B CN 201310129394 A CN201310129394 A CN 201310129394A CN 103227943 B CN103227943 B CN 103227943B
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Abstract
The embodiment of the present invention provides the guard method of a kind of Set Top Box, equipment and system, the method comprise the steps that the first control signal that tuner LNB charger receiving set up box sends;Resolve described first control signal according to the communication protocol between described LNB charger and described Set Top Box and obtain first and perform instruction；Performing described first perform instruction and generate described second control signal, described second control signal supports the communication protocol between signal receiver and described LNB charger；Described second control signal is sent to described signal receiver.The embodiment of the present invention can improve the safety and reliability during Set Top Box uses, and reduces the heat radiation cost of Set Top Box.
Description
Technical field
The present invention relates to the communications field, particularly relate to the guard method of a kind of Set Top Box, equipment and system.
Background technology
Satellite set top box is during work, and its internal tuner LNB electric supply installation easily draws because of short circuit
Rise overcurrent problem and be damaged, cause the work that can not normally support satellite set top box.Additionally, defend
When star Set Top Box uses for a long time, electric supply installation and the LNB electric supply installation of Set Top Box self can produce the biggest
Heat, existing heat dissipation technology scheme needs to use large volume, the heat abstractor of high cost solves Set Top Box
Heat dissipation problem, hinders satellite set top box towards miniaturization, and consumes the energy.
Prior art proposes the side of a kind of LNB electric supply installation protected in satellite set top box for short circuit problem
Method, increases the current detecting for detecting LNB electric supply installation in the LNB electric supply installation of satellite set top box
Short block, when current detecting short block detects short circuit phenomenon, prompting controller stops LNB immediately
Electric supply installation is powered.The LNB electric supply installation that the method for prior art protects in satellite set top box is not damaged by
While, also have impact on the normal use of user, the short circuit phenomenon no matter current detecting short block detects
The most really can damage LNB electric supply installation, satellite set top box will because LNB electric supply installation does not works not yet
Equipment can be received with outdoor signal and carry out communication, directly result in user and cannot watch TV programme.Additionally, it is existing
Technology is had to also fail to provide and can be used for that volume within satellite set top box is little and the heat sink conception of low cost.
Summary of the invention
The embodiment of the present invention can improve the safety and reliability during Set Top Box uses, and reduces machine
The heat radiation cost of top box.
Concrete, the guard method of the Set Top Box of the embodiment of the present invention, it may include:
The first control signal that tuner LNB charger receiving set up box sends；
Described first control signal is resolved according to the communication protocol between described LNB charger and described Set Top Box
And obtain first and perform instruction；
Perform described first perform instruction and generate described second control signal, described second control signal support
Communication protocol between signal receiver and described LNB charger；
Described second control signal is sent to described signal receiver.
It is also preferred that the left described first control signal carries d. c. voltage signal.
It is also preferred that the left described second control signal carries polarizing voltage signal, square wave control signal or multiple antennas control
In device DISEQC control signal processed one or more.
Perform to instruct and generate described second control signal to include it is also preferred that the left perform described first:
Extract and isolate the described d. c. voltage signal carried in described first control signal；
Under power protection state, described d. c. voltage signal is carried out polarization process, generate described polarizing voltage
Signal also keeps the isolation of described polarizing voltage signal；
Under power protection state, perform instruction according to first generate described square wave control signal and described
DISEQC control signal, and by the described square wave control signal generated and described DISEQC control signal
Remain isolation；
Obtain described polarizing voltage signal, described square wave control signal and described DISEQC control signal also
Synthesize described second control signal.
It is also preferred that the left described second control signal is sent to described signal receiver, also include:
Described LNB charger receives the intermediate frequency satellite-signal that described signal receiver sends, and described intermediate frequency is defended
Star signal be described signal receiver by described signal receiver according to described signal receiver with described
Communication protocol between LNB charger resolve and perform described second control signal corresponding second perform instruction
After the high frequency satellite-signal that receives be amplified, obtain after frequency-conversion processing；
Described intermediate frequency satellite-signal is sent to described Set Top Box.
Accordingly, the tuner LNB charger that the embodiment of the present invention provides, it may include:
Receiver module, the first control signal sent for receiving set up box；
Parsing module, for resolving institute according to the communication protocol between described LNB charger and described Set Top Box
State the first control signal, obtain the first execution instruction and send to performing module；
Perform module, described first performs instruction from what described parsing module received for performing, generation institute
Stating the second control signal, described second control signal is supported between signal receiver and described LNB charger
Communication protocol；
Sending module, sends to described signal for described second control signal described execution module generated
Reception equipment.
It is also preferred that the left described first control signal that described receiver module receives carries d. c. voltage signal.
It is also preferred that the left described second control signal that described execution module generates carries polarizing voltage signal, square wave
In control signal and antenna controller DISEQC control signal one or more.
It is also preferred that the left described execution module includes:
First isolated location, for extracting and isolating the described DC voltage carried in described first control signal
Signal；
Polarizing voltage unit, described first isolated location keeps under isolation, for described DC voltage
Signal carries out polarization process, generates described polarizing voltage signal and sends to signal synthesis unit；
Subsignal signal generating unit, generates described square wave control signal and described for performing instruction according to first
DISEQC control signal also sends to described signal synthesis unit；
Second isolated location, for isolate described subsignal signal generating unit generate described square wave control signal with
And described DISEQC control signal；
Protected location, is used for protecting described polarizing voltage unit and described subsignal signal generating unit；
Signal synthesis unit, for receiving described polarizing voltage signal, the institute that described polarizing voltage unit sends
State described square wave control signal and described DISEQC control signal that subsignal signal generating unit sends, synthesis
And generate the second control signal.
It is also preferred that the left described receiver module is additionally operable to receive the intermediate frequency satellite-signal that described signal receiver sends,
Described intermediate frequency satellite-signal is that described signal receiver is received by described signal receiver according to described signal
Communication protocol between equipment with described LNB charger resolves and performs that described second control signal is corresponding
Two perform instruction after the high frequency satellite-signal that receives be amplified, obtain after frequency-conversion processing；
Described sending module is additionally operable to described intermediate frequency satellite-signal is sent to described Set Top Box.
Accordingly, the Set Top Box protection system that the embodiment of the present invention provides, it may include:
Set Top Box, controls signal to tuner LNB charger, described first control signal for sending first
Support the communication protocol between described Set Top Box and described LNB charger；
Signal receiver, for receiving the second control signal that described LNB charger sends, described second
Control signal supports the communication protocol between described signal receiver and described LNB charger；
Tuner LNB charger, for aforesaid LNB charger.
It is also preferred that the left
Described Set Top Box, is additionally operable to according to the communication protocol between described Set Top Box and described LNB charger raw
Become the first control signal；It is additionally operable to receive the intermediate frequency satellite-signal that described LNB charger sends；
Described signal receiver, is additionally operable to according between described signal receiver and described LNB charger
Communication protocol resolve and perform described second control signal corresponding second perform instruction；It is additionally operable to perform
After two perform instruction, receive corresponding high frequency satellite-signal；It is additionally operable to described high frequency satellite-signal is put
Greatly, frequency-conversion processing, generate intermediate frequency satellite-signal and send extremely described LNB charger；
Described LNB charger, for aforesaid LNB charger.
The embodiment of the present invention can improve the safety and reliability during Set Top Box uses, and reduces machine
The heat radiation cost of top box.
Accompanying drawing explanation
In order to be illustrated more clearly that the technical scheme of the embodiment of the present invention, will make required in embodiment below
Accompanying drawing be briefly described, it should be apparent that, below describe in accompanying drawing be only the embodiment of the present invention
Some embodiments, for those of ordinary skill in the art, on the premise of not paying creative work,
Other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is an embodiment schematic flow sheet of the guard method of the Set Top Box of the present invention；
Fig. 2 is an example structure composition schematic diagram of the tuner LNB charger of the present invention；
Fig. 3 is another example structure composition schematic diagram of the tuner LNB charger of the present invention；
Fig. 4 is an embodiment schematic flow sheet of the protection system of the Set Top Box of the present invention.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clearly
Chu, be fully described by, it is clear that described embodiment be only a part of embodiment of the present invention rather than
Whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art are not making creation
The every other embodiment obtained under property work premise, broadly falls into the scope of protection of the invention.
Embodiments providing the guard method of a kind of Set Top Box, it comprises the steps that tuner LNB powers
Device is set up with Set Top Box, signal receiver and is connected；Described LNB charger receives what described Set Top Box sent
First control signal；Described the is resolved according to the communication protocol between described LNB charger and described Set Top Box
One control signal also obtains first and performs instruction；Perform described first perform instruction and generate described second control
Signal, described second control signal supports the communication between described signal receiver and described LNB charger
Agreement；Described second control signal is sent to described signal receiver.The tuner of the embodiment of the present invention
LNB charger can preferably support that Set Top Box works, can avoid processing and generate during control signal because of
The Set Top Box infringement that overcurrent causes.
Below in conjunction with the accompanying drawings and detailed description of the invention, the technical scheme of the embodiment of the present invention is described in detail.
As it is shown in figure 1, an embodiment of the guard method of the Set Top Box of present invention offer can comprise the following steps that
Step S110, the first control signal that tuner LNB charger receiving set up box sends.Wherein, originally
The LNB charger mentioned in inventive embodiments be a kind of for coordinate and perform Set Top Box control command, can
Compatible existing Set Top Box is used for control signal with signal receiver communication protocol and according to this protocol generation
The novel device of the control signal of reception equipment, described existing communication agreement can include 13/18V control signal
Processing method, 0/22Hz control signal processing method and Diseqc control signal processing method；The present invention is real
Executing the Set Top Box mentioned in example is a kind of Set Top Box being received equipment by LNB charger control signal, its
And there is the communication protocol pre-seted between LNB charger；The first control letter mentioned by the embodiment of the present invention
It number it is the control signal of a kind of the first communication protocol supported between LNB charger and Set Top Box.The present invention is real
Executing the first communication protocol that example mentions is the communication protocol that supplier is pre-defined according to service condition and arranges,
Set Top Box can formulate and send the first control signal by this agreement, and LNB charger will be able to be connect by this agreement
The first control signal received carries out resolving and obtain need to perform first and performs instruction.Additionally, this
In bright embodiment, the first control signal that LNB charger receives is generally used to indicate that LNB charger generates
Receive the second control signal of equipment for control signal, and the second control signal specified comprises polarization electricity
Pressure signal, therefore the first control signal of Set Top Box transmission carries d. c. voltage signal and enters for LNB charger
Row voltage signal processes.
Step S111, resolves the first control signal also according to the communication protocol between LNB charger and Set Top Box
Obtain first and perform instruction.The first control signal mentioned such as step S110, this step is used for passing through LNB
Communication protocol between charger with Set Top Box obtains with the first control signal corresponding first and performs instruction,
First execution instruction can be that polarizing voltage signal, square wave control signal or multiple antennas controller are carried in generation
Second control signal of DISEQC control signal.Such as, in this step, LNB charger can get generation
Carry the second control signal of horizontal polarization voltage signal, square wave control signal and DISEQC control signal also
Sending to the first of signal receiver and performs instruction, wherein, horizontal polarization voltage signal can be by process the
The d. c. voltage signal carried in one control signal obtains.The signal receiver mentioned in the embodiment of the present invention
It is the satellite reception forwarding unit of a kind of broad sense, including the antenna system (feed) for receiving satellite-signal, incites somebody to action
The satellite-signal received carries out low noise block downconverter LNB and the relevant various types of signal switch processed.
Step S112, performs the first execution instruction and generates the second control signal.Wherein, the second control signal
Carry in polarizing voltage signal, square wave control signal or multiple antennas controller DISEQC control signal a kind of or
Multiple.Being embodied as of this step comprises the steps that extraction and isolates the DC voltage carried in the first control signal
Signal；Under power protection state, d. c. voltage signal is carried out polarization process, generates polarizing voltage signal also
Keep the isolation of polarizing voltage signal；Under power protection state, perform instruction according to first generate square wave
Control signal and DISEQC control signal, and the square wave control signal generated and DISEQC are controlled
Signal remains isolation；Obtain polarizing voltage signal, square wave control signal and DISEQC and control letter
Number and synthesize the second control signal.
In implementing, extract and isolate the d. c. voltage signal carried in the first control signal and be mainly intended to
Processing this d. c. voltage signal under isolation, the effect of isolation is to avoid this d. c. voltage signal to disturb LNB
Other control signals that charger generates.
In implementing, owing to the communication protocol between existing signal receiver and Set Top Box includes
The polarizing voltage control signal of 13/18V, therefore the direct current that will be able to extract according to the first execution instruction got
Voltage control signal carries out polarization process under isolation, such as, if first performs instruction for by this direct current
Voltage signal carries out the instruction of horizontal polarization, then under isolation, this d. c. voltage signal is carried out level pole
Change processes, and generates the horizontal polarization voltage signal of 18V.Additionally, this step is to enter under power protection state
Row, the heavy current produced due to polarization process may cause the overcurrent damage of LNB charger, therefore this
Apparatus for protecting power supply is also contains inside the LNB charger of inventive embodiments.
In implementing, under power protection state according to first perform instruction generate square wave control signal and
DISEQC control signal, and the square wave control signal of generation and DISEQC control signal are remained every
From state, wherein, square wave control signal or DISEQC control signal be actually a kind of height change,
For being modulated at the square wave in the second control signal.Due to the square wave control signal generated and DISEQC control
Pickup electrode processed is vulnerable to LNB charger internal high frequency voltage influence, may produce the nonstandard hidden danger of waveform,
Therefore the signal generated also need to be protected under isolation.May draw during producing due to waveshape signal
Play the overcurrent damage of LNB charger, therefore the power protection within the LNB charger of the embodiment of the present invention
Device plays a protective role in this process too.
In implementing, obtain polarizing voltage signal, square wave control signal and DISEQC control signal also
Synthesize the second control signal.This process is the process of a kind of Signal averaging, will be used for prompting and control letter
Number receive equipment control signal be superimposed upon on polarizing voltage signal and synthesize the second control signal.
Step S113, sends the second control signal to signal receiver.In as mentioned by abovementioned steps
Holding, the second control signal of the embodiment of the present invention is a kind of support between LNB charger and signal receiver
The control signal of the second communication protocol, and the compatible existing Set Top Box of described second communication protocol and signal
Reception equipment communication protocol, therefore after signal receiver receives the second control signal that LNB charger sends,
Can be according to the second control signal described in the parsing of existing communication protocol the corresponding instruction of execution.As the aforementioned
Step, the LNB charger of the embodiment of the present invention will carry polarizing voltage signal, square wave control signal and
Second control signal of DISEQC control signal sends to signal receiver, and signal receiver can be according to existing
Protocols having resolves this second control signal, operates according to execution instruction therein.Such as, second controls
Carry horizontal polarization voltage signal and DISEQC control signal in signal, then signal receiver needs root
Open corresponding switch according to the horizontal polarization voltage signal received, make phase according to DISEQC control signal
The process answered.
Additionally, the intermediate frequency that the LNB charger of the embodiment of the present invention can also receive signal receiver transmission is defended
Star signal, and this intermediate-freuqncy signal is sent to Set Top Box.Wherein, this intermediate frequency satellite-signal is that signal reception sets
The standby high frequency satellite-signal performing to resolve and perform to receive after the second execution corresponding to the second control signal instructs
It is amplified, obtains after frequency-conversion processing.Set Top Box receives the described intermediate frequency satellite that LNB charger transmits
After after signal, this intermediate frequency satellite-signal can being carried out frequency modulation, demodulation, spatially selecting filtering, decoding, demultiplex,
Export each assonance, video signal.
The embodiment of the present invention is that Set Top Box adds one by Set Top Box in the transmission line of signal receiver
Control, can generate the LNB charger of the control signal receiving equipment for control signal, power at LNB
Device is carried out generate control signal process, efficiently avoid the infringement that Set Top Box is produced by the factors such as overcurrent,
Compared to prior art propose in Set Top Box increase overcurrent protection avoid signal receiver
The method of damage factor during control signal generation, the embodiment of the present invention performs letter by LNB charger
Number receive equipment controling signal method protect Set Top Box more to have security reliability and practicality.
Accordingly, it is a kind of for protecting the tuner LNB charger of Set Top Box that the embodiment of the present invention provides,
It can include receiver module, the first control signal sent for receiving set up box；Parsing module, for root
Resolve described first control signal according to the communication protocol between described LNB charger and described Set Top Box, obtain
First performs instruction and sends to performing module；Perform module, receive from described parsing module for execution
Described first perform instruction, generate described second control signal, described second control signal supports that signal connects
Communication protocol between receiving unit and described LNB charger；Sending module, for raw by described execution module
Described second control signal become sends to described signal receiver.The tuner LNB of the embodiment of the present invention
Charger can preferably support that Set Top Box works, and Set Top Box can be made to avoid generating signal receiver control
Signal process suffers damage, there is security reliability and practicality.
Below in conjunction with the accompanying drawings and detailed description of the invention, the technical scheme of device in the embodiment of the present invention is carried out in detail
Describe in detail bright.
Fig. 2 is the structure composition schematic diagram of the tuner LNB charger of the embodiment of the present invention.This embodiment
Device can be used for implementing the way shown in Fig. 1, and concrete, the device of this embodiment includes: receiver module 21,
Parsing module 22, execution module 23 and sending module 24, can implement with reference to the present invention shown in Fig. 3 in the lump
Wherein, performing module 23 can wrap another structure composition schematic diagram of the tuner LNB charger of example further
Include the first isolated location 231, polarizing voltage unit 232, subsignal signal generating unit the 233, second isolated location
234, signal synthesis unit 235 and protected location 236, wherein:
Receiver module 21, the first control signal sent for receiving set up box.Wherein, the first control signal
Carry the d. c. voltage signal for generating polarizing voltage voltage signal；First control signal is a kind of to support the
The control signal of one communication protocol；First communication protocol be a kind of supplier pre-defined according to service condition and
Communication protocol that arrange, that be present between LNB charger and Set Top Box, Set Top Box can be according to the first communication
Agreement compiles the first control signal, and LNB charger can resolve the first control signal according to the first control protocol.
Additionally, the LNB charger of the embodiment of the present invention is connected with Set Top Box by coaxial cable, therefore receive
The first control signal that module 21 receives is transmitted by coaxial cable.
Parsing module 22, for resolving the first control according to the communication protocol between LNB charger and Set Top Box
Signal, obtains the first execution instruction and sends to performing module 23.This module can be comprised by LNB charger
Hardware circuit in microprocessor unit MCU carry out dissection process；Additionally, the present embodiment gets
One execution instruction can be that polarizing voltage signal, square wave control signal or multiple antennas controller are carried in generation
Second control signal of DISEQC control signal.
Performing module 23, first received for performing analytically module 22 performs instruction, generates the second control
Signal processed.This module can farther include the first isolated location 231, polarizing voltage unit 232, subsignal life
Become unit the 233, second isolated location 234, signal synthesis unit 235 and protected location 236.
First isolated location 231, for extracting and isolating the d. c. voltage signal carried in the first control signal.
In implementing, isolate the d. c. voltage signal carried in the first control signal and can be entered by high-frequency isolation device
Row insulation blocking, it is to avoid d. c. voltage signal affects the work of other devices in LNB charger.
Polarizing voltage unit 232, the first isolated location 231 keeps under isolation, for believing DC voltage
Number carry out polarization process, generate polarizing voltage signal and also send to signal synthesis unit 235.In implementing,
Polarizations process can be carried out, such as, when first performs polarization control in instruction by a kind of programmable power supply device
When system instruction is for level, d. c. voltage signal can be carried out horizontal polarization process by programmable power supply device, raw
Become the horizontal polarization voltage signal of 18VLNB voltage.
Subsignal signal generating unit 233, for according to first perform instruction generate square wave control signal and
DISEQC control signal also sends to signal synthesis unit 235.In implementing, square wave control signal and
DISEQC control signal is a kind of also can to carry out signal by the apparatus for regulating within a kind of programmable power supply device
Conciliation and output, subsignal signal generating unit 233 can be stable by the output of programmable power supply device, specification
Square wave control signal and DISEQC control signal.
Second isolated location 234, for separaant signal signal generating unit 233 generate square wave control signal and
DISEQC control signal.In implementing, the square wave control signal that separaant signal signal generating unit 233 generates
And DISEQC control signal can also carry out insulation blocking by high-frequency isolation device, it is to avoid DC voltage is believed
Number or polarizing voltage effect of signals subsignal signal generating unit 233 output square wave control signal and DISEQC
Control signal.
Signal synthesis unit 235, for receiving polarizing voltage signal, the sub-letter that polarization voltage cell 232 sends
Square wave control signal that number signal generating unit 233 sends and DISEQC control signal, synthesize and generate second
Control signal.In implementing, signal synthesis unit 235 can be a kind of signal superposition device, can pass through
It is overlapped multiple control signals that polarizing voltage unit 232 and subsignal signal generating unit 233 generate processing,
Generate the second control signal receiving equipment for control signal.
Protected location 236, is used for protecting polarizing voltage unit 232 and subsignal signal generating unit 233.Protection is single
Unit 236 can be a kind of protection circuit device, is mainly used to protection for generating polarizing voltage signal, square wave
The polarizing voltage unit 232 of control signal and DISEQC control signal and subsignal signal generating unit 233, make
Avoided the occurrence of stream during generating signal, overvoltage is damaged.
Sending module 24, for sending the second control signal that execution module 23 generates to signal receiver.
In implementing, LNB charger is connected with signal receiver by coaxial cable, therefore sends mould
Second control signal is also sent to signal receiver by block 24 by coaxial cable.Signal receiver
Corresponding instruction will be performed according to agreement after receiving this second control signal.
Additionally, the LNB charger of the embodiment of the present invention is additionally operable to the intermediate frequency satellite sent by signal receiver
Signal transmits to Set Top Box.In implementing, when signal receiver performs second that LNB charger sends
After the second control instruction corresponding to control signal, the height carrying audio, video data that can will receive from base station
Frequently satellite-signal be amplified, after frequency-conversion processing, the intermediate frequency satellite-signal carrying audio, video data that will generate
Transmission is to LNB charger, then after the receiver module 21 of LNB charger receives this intermediate frequency satellite-signal,
Also by sending module 24, this intermediate frequency satellite-signal carrying audio, video data will be sent to Set Top Box, use
Family can obtain audio, video data information by Set Top Box.
Additionally, the embodiment of the present invention is mentioned as polarizing voltage unit 232 and subsignal signal generating unit 233
Programmable power supply device be also simultaneously used for as powering as the MCU of parsing module 22；Owing to the present invention implements
In example, all transmitted by coaxial cable during LNB supply module output signal, therefore also need corresponding signal
Coupling device, needs the signal of transmission to transmit after ac signal couples.
The LNB charger of the embodiment of the present invention is mainly supported and Set Top Box, signal by the control of MCU
Reception equipment mutual: there is new host-host protocol between itself and Set Top Box, and retain and set with signal reception
Signal transfer protocol between Bei, is resolved by new host-host protocol and generates signal receiver control signal,
Can preferably protect Set Top Box, make Set Top Box be damaged during avoiding generating signal receiver control signal
Evil；MCU in LNB charger is owing to having preferably analysis, calculating, memory function, therefore makes LNB
Charger has stronger compatibility, can resolve multiple machine top by writing multiple transport protocols in MCU
The control signal of box the corresponding instruction of execution；It connects specification, debugging conveniently, can be in insulation blocking
Stable polarizing voltage signal, square wave control signal and DISEQC control signal, specification is generated under state
Output signal receiver control signal after Signal averaging, there is reliability；Its circuit arrangement structure
Simply, low cost, there is broad applicability, practicality, and can have higher product degree of recognition.
Accordingly, a kind of Set Top Box protection system that the embodiment of the present invention provides, can refer to the machine shown in Fig. 4
Top box protection system structure composition schematic diagram, the Set Top Box protection system of the embodiment of the present invention can include Set Top Box
41, tuner LNB charger 42 and signal receiver 43, it is characterised in that including:
Set Top Box 41, sends first and controls signal to LNB charger 42.Wherein, Set Top Box 41 generates
First control signal supports the communication protocol between Set Top Box 41 and LNB charger 42.Such as previous embodiment
Mentioned content, Set Top Box 41 can be according to the communication protocol between Set Top Box 41 and LNB charger 42
Generating the first control signal, instruction LNB charger 42 performs corresponding first and performs instruction.
Tuner LNB charger 42, the first control signal sent for receiving set up box 41；It is additionally operable to
Resolve the first control signal according to the communication protocol between Set Top Box 41 and LNB charger 42, obtain first
Control instruction；It is additionally operable to perform the first control instruction, according to LNB charger 42 and signal receiver 43
Between communication protocol generate for control signal receive equipment 43 the second control signal.
Signal receiver 43, for receiving the second control signal that LNB charger 42 sends.It is additionally operable to
In the system of the embodiment of the present invention, when Set Top Box 41 is intended to the satellite-signal obtaining a certain frequency range, first root
Generate the first control signal according to the communication protocol between Set Top Box 41 and LNB charger 42 and send to LNB
Charger 42；After LNB charger 42 receives this first control signal, by between itself and Set Top Box 41
Communication protocol resolve the first control signal, and obtain the first control instruction, this instruction is used for indicating LNB to supply
Electrical equipment 42 generates according to the communication protocol between LNB charger 42 and signal receiver 43 and is used for controlling
Second control signal of signal receiver 43, makes signal receiver 43 perform accordingly and instructs and obtain
The satellite-signal of corresponding band, wherein, in the second control signal, portability polarizing voltage signal, square wave control
In signal or multiple antennas controller DISEQC control signal one or more；Signal receiver 43 receives
After the second control signal that LNB charger 42 sends, according to LNB charger 42 and signal receiver
Communication protocol between 43 resolves the second control signal, and obtains the second control instruction, and this instruction is used for indicating
Signal receiver 43 obtains the satellite-signal of corresponding band.
In the system of the embodiment of the present invention, signal receiver 43 performs the second control instruction and according to getting
After the high frequency satellite-signal of corresponding band, also high frequency satellite-signal is amplified, frequency-conversion processing, in generation
Frequently satellite-signal sending to LNB charger 42；LNB charger 42 receives signal receiver 43
After the intermediate frequency satellite-signal sent, also by this intermediate frequency satellite signal transit to Set Top Box 41；Set Top Box 41 receives
After this intermediate frequency satellite-signal, this intermediate frequency satellite-signal can be carried out frequency modulation, demodulation, spatially selecting filtering, decoding,
After demultiplexing, export each assonance, video signal.
In implementing, owing to, in the system of the embodiment of the present invention, Set Top Box 41 only need to be by output the first control
Signal processed can make LNB charger 42 generate corresponding signal receiver 43 control signal, therefore the present invention
Embodiment proposes the most simultaneously and have employed a kind of Novel STB not comprising LNB supply module, this Novel machine
With the communication protocol preset between itself and LNB charger 42, this Novel machine top in the primary processor of top box
Box comprises the coupling device that the first control signal is carried out with alternating current couple.Set Top Box with prior art
Comparing, the Set Top Box 41 of the embodiment of the present invention is not owing to containing LNB supply module and LNB supply module
Heat abstractor, thus production cost is relatively low, can have the feature that volume is little, it is also possible to avoid owing to LNB supplies
The overcurrent of generation, over-voltage protection in electricity module running, coordinate with aforesaid LNB charger 42
Use, there is preferable reliability, wide applicability.
In implementing, in the system of the embodiment of the present invention, LNB charger 42 is due to can be according to Set Top Box 41
The first control signal obtain the first control instruction after generate the second control signal, therefore produce in the course of the work
Overcurrent risk all can be undertaken by LNB charger 42, there is security reliability；LNB charger 42 exists
Being prone to debugging in production process, production cost is low, and writable and preservation various protocols, such as existing communication agreement
And the new communication protocol being likely to occur, there is preferable compatibility；LNB charger 42 is in the mistake used
Cheng Zhong, maintenance is convenient, and is easily changed, and does not cause use inconvenience or the wasting of resources, has practicality.
The system of the embodiment of the present invention can ensure the safe handling of Set Top Box 41 during work；Due to this
In the system of inventive embodiments, LNB charger 42 has stronger compatibility, therefore the embodiment of the present invention is
System also has stronger compatibility, can support multiple by sending control signal control LNB charger 42
Set Top Box；The convenient maintenance of LNB charger 42 in embodiment of the present invention system and replacing, therefore system work
During there is stronger reliability.
One of ordinary skill in the art will appreciate that all or part of flow process realizing in above-described embodiment method,
Can be by computer program and complete to instruct relevant hardware, described program can be stored in a calculating
In machine read/write memory medium, this program is upon execution, it may include such as the flow process of the embodiment of above-mentioned each method.
Wherein, described storage medium can be magnetic disc, CD, read-only store-memory body (Read-Only Memory,
Or random store-memory body (Random Access Memory, RAM) etc. ROM).
Above disclosed be only present pre-ferred embodiments, certainly can not with this limit the present invention it
Interest field, one of ordinary skill in the art will appreciate that all or part of flow process realizing above-described embodiment,
And according to the equivalent variations that the claims in the present invention are made, still fall within the scope that invention is contained.
Claims (12)
1. the guard method of a Set Top Box, it is characterised in that including:
The first control signal that tuner LNB charger receiving set up box sends；
Described first control signal is resolved according to the communication protocol between described LNB charger and described Set Top Box
And obtain first and perform instruction；
Performing described first perform instruction and generate the second control signal, described second control signal supports signal
Communication protocol between reception equipment and described LNB charger；
Described second control signal is sent to described signal receiver.
2. guard method as claimed in claim 1, it is characterised in that described first control signal is carried directly
Stream voltage signal.
3. guard method as claimed in claim 2, it is characterised in that described second control signal carries pole
Change one or more in voltage signal, square wave control signal or multiple antennas controller DISEQC control signal.
4. guard method as claimed in claim 3, it is characterised in that perform described first and perform instruction also
Generate described second control signal to include:
Extract and isolate the described d. c. voltage signal carried in described first control signal；
Under power protection state, described d. c. voltage signal is carried out polarization process, generate described polarizing voltage
Signal also keeps the isolation of described polarizing voltage signal；
Under power protection state, perform instruction according to first generate described square wave control signal and described
DISEQC control signal, and by the described square wave control signal generated and described DISEQC control signal
Remain isolation；
Obtain described polarizing voltage signal, described square wave control signal and described DISEQC control signal also
Synthesize described second control signal.
5. guard method as claimed in claim 1, it is characterised in that described second control signal is sent
To described signal receiver, also include:
Described LNB charger receives the intermediate frequency satellite-signal that described signal receiver sends, and described intermediate frequency is defended
Star signal be described signal receiver by described signal receiver according to described signal receiver with described
Communication protocol between LNB charger resolve and perform described second control signal corresponding second perform instruction
After the high frequency satellite-signal that receives be amplified, obtain after frequency-conversion processing；
Described intermediate frequency satellite-signal is sent to described Set Top Box.
6. a tuner LNB charger, it is characterised in that including:
Receiver module, the first control signal sent for receiving set up box；
Parsing module, for resolving institute according to the communication protocol between described LNB charger and described Set Top Box
State the first control signal, obtain the first execution instruction and send to performing module；
Perform module, described first performs instruction from what described parsing module received for performing, generation the
Two control signals, described second control signal supports leading between signal receiver and described LNB charger
Letter agreement；
Sending module, sends to described signal for described second control signal described execution module generated
Reception equipment.
7. tuner LNB charger as claimed in claim 6, it is characterised in that described receiver module
Described first control signal received carries d. c. voltage signal.
8. tuner LNB charger as claimed in claim 7, it is characterised in that described execution module
Described second control signal generated carries polarizing voltage signal, square wave control signal and antenna controller
In DISEQC control signal one or more.
9. tuner LNB charger as claimed in claim 8, it is characterised in that described execution module
Including:
First isolated location, for extracting and isolating the described DC voltage carried in described first control signal
Signal；
Polarizing voltage unit, described first isolated location keeps under isolation, for described DC voltage
Signal carries out polarization process, generates described polarizing voltage signal and sends to signal synthesis unit；
Subsignal signal generating unit, generates described square wave control signal and described for performing instruction according to first
DISEQC control signal also sends to described signal synthesis unit；
Second isolated location, for isolate described subsignal signal generating unit generate described square wave control signal with
And described DISEQC control signal；
Protected location, is used for protecting described polarizing voltage unit and described subsignal signal generating unit；
Signal synthesis unit, for receiving described polarizing voltage signal, the institute that described polarizing voltage unit sends
State described square wave control signal and described DISEQC control signal that subsignal signal generating unit sends, synthesis
And generate the second control signal.
10. tuner LNB charger as claimed in claim 6, it is characterised in that
Described receiver module, is additionally operable to receive the intermediate frequency satellite-signal that described signal receiver sends, described
Intermediate frequency satellite-signal be described signal receiver by described signal receiver according to described signal receiver
Corresponding second the holding of described second control signal is resolved and performs with the communication protocol between described LNB charger
After row instruction, the high frequency satellite-signal that receives is amplified, obtains after frequency-conversion processing；
Described sending module, is additionally operable to described intermediate frequency satellite-signal is sent to described Set Top Box.
11. 1 kinds of Set Top Box protection systems, it is characterised in that including:
Set Top Box, controls signal to tuner LNB charger, described first control signal for sending first
Support the communication protocol between described Set Top Box and described LNB charger；
Signal receiver, for receiving the second control signal that described LNB charger sends, described second
Control signal supports the communication protocol between described signal receiver and described LNB charger；
Tuner LNB charger, for the LNB charger described in claim 6.
12. Set Top Box as claimed in claim 11 protection systems, it is characterised in that
Described Set Top Box, is additionally operable to according to the communication protocol between described Set Top Box and described LNB charger raw
Become the first control signal；It is additionally operable to receive the intermediate frequency satellite-signal that described LNB charger sends；
Described signal receiver, is additionally operable to according between described signal receiver and described LNB charger
Communication protocol resolve and perform described second control signal corresponding second perform instruction；It is additionally operable to perform
After two perform instruction, receive corresponding high frequency satellite-signal；It is additionally operable to described high frequency satellite-signal is put
Greatly, frequency-conversion processing, generate intermediate frequency satellite-signal and send extremely described LNB charger；
Described LNB charger, for the LNB charger described in any one of claim 7-10.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310129394.6A CN103227943B (en) | 2013-04-15 | 2013-04-15 | The guard method of a kind of Set Top Box, equipment and system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310129394.6A CN103227943B (en) | 2013-04-15 | 2013-04-15 | The guard method of a kind of Set Top Box, equipment and system |
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| CN103227943A CN103227943A (en) | 2013-07-31 |
| CN103227943B true CN103227943B (en) | 2016-08-24 |
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| CN112954427A (en) * | 2021-02-10 | 2021-06-11 | 深圳市智博通电子有限公司 | Method for controlling IPTV set-top box through mobile terminal |
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| CN102811327A (en) * | 2011-06-02 | 2012-12-05 | 深圳市视维科技有限公司 | LNB (Low Noise Block) power supply control circuit in digital television set top box |
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| CN201533345U (en) * | 2009-10-22 | 2010-07-21 | 深圳市同洲电子股份有限公司 | LNB switching circuit of satellite set-top box |
| CN101741055A (en) * | 2009-12-31 | 2010-06-16 | 成都东银信息技术股份有限公司 | Method for protecting satellite television LNB from short circuit |
| CN201986058U (en) * | 2011-01-10 | 2011-09-21 | 青岛海信电器股份有限公司 | LNB power supply circuit and television |
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| CN103227943A (en) | 2013-07-31 |
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