CN103442274A - Satellite signal receiving device and method - Google Patents
Satellite signal receiving device and method Download PDFInfo
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- CN103442274A CN103442274A CN2013103763185A CN201310376318A CN103442274A CN 103442274 A CN103442274 A CN 103442274A CN 2013103763185 A CN2013103763185 A CN 2013103763185A CN 201310376318 A CN201310376318 A CN 201310376318A CN 103442274 A CN103442274 A CN 103442274A
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Abstract
The invention is suitable for the field of satellite communications, and particularly relates to a satellite signal receiving device and method. The method comprises the following steps that when a first tuning demodulator receives satellite signals for playing and a second tuning demodulator does not need to record or recorded signals come from a satellite whose signals are received by the first tuning demodulator, the second tuning demodulator stops receiving the satellite signals, and the satellite signals received by the first tuning demodulator are ringed to the second tuning demodulator. According to the satellite signal receiving device and method, the same or different programs from the same satellite are received by using only one signal source, and the programs are played and recorded.
Description
Technical field
The invention belongs to satellite communication field, relate in particular to a kind of satellite signal receiving apparatus and method.
Background technology
In routine use, the user has recording function more and more to pay attention to the satellite receiver utensil, if the program of the program of imprinting and broadcasting is not on a frequency in existing satellite receiver, just need to use the machine of double tunning modulator, in the double tunning modulator, one of them tuning modulator is for being play, and the tuning modulator of another one is for carrying out imprinting.In actual use, satellite receiver be mostly adopt two-way independently tuning modulator modulated, two paths of signals is actually fully independently in this case, be equivalent to that two tuning modulators are parallel independently carries out work, if two tuning modulator receptions is different satellite-signals, being also now that two tuning modulators are parallel independently carries out work, while is because two tuning modulators receptions is identical satellite-signal, easily when receiving signal, produce larger interference, to the user, bring great inconvenience.
Summary of the invention
The purpose of the embodiment of the present invention is to provide a kind of satellite signal receiving apparatus and method, easily produce and disturb while for the tuning modulator of above-mentioned two-way, receiving same satellite-signal, effectively imprinting and the problem of playing the different programs of same satellite-signal, by only using a tuning modulator in road to receive the signal from same satellite signal source, and then effectively play and imprinting.
The embodiment of the present invention is to realize like this, a kind of satellite signal receiving apparatus, comprise the first tuning modulator and the tuning modulator of second tune modulator two-way, described device also comprises the commutation circuit be connected with the tuning modulator of two-way respectively, when the first tuning demodulator receiving satellite signal is play, when the second tune modulator does not need to carry out satellite that the signal of imprinting or imprinting receives from the first tuning modulator, close the satellite signal receiving of second tune modulator, the satellite-signal ring cutting that described commutation circuit receives the first tuning modulator is to the second tune modulator.
Further, when described device needs the different satellite-signal of imprinting, the second tune modulator reopens satellite signal receiving, and the signal that described commutation circuit receives the second tune modulator switches back the second tune modulator.
Further, the tuning modulator in each road includes: signal source, power supply circuits, tuner, modulation circuit, wherein said signal source, tuner, modulation circuit connect successively, described power supply circuits are connected with signal source, signal source is powered or cut off the power supply, by controlling the power supply start signal source satellite signal receiving to signal source, by controlling, satellite signal receiving is closed in the outage control signal source of signal source.
Further, described commutation circuit is two, be respectively the first commutation circuit and the second commutation circuit, wherein the first commutation circuit is connected between the signal source and tuner of the first tuning modulator, and be connected with the power supply circuits of the first tuning modulator and the tuner of second tune modulator, when described the first commutation circuit is cut off the power supply to signal source at the power supply circuits of described the first tuning modulator, switch to the tuner of second tune modulator;
The second commutation circuit is connected between the signal source and tuner of second tune modulator, and be connected with the power supply circuits of second tune modulator and the tuner of the first tuning modulator, when described the second commutation circuit is cut off the power supply to signal source at the power supply circuits of described second tune modulator, switch to the tuner of the first tuning modulator.
Further, described device also comprises central processing unit, described central processing unit is connected with tuner, modulator and the power supply circuits of the tuning modulator of two-way respectively by the I2C bus, when described central processing unit does not need to carry out at the second tune modulator satellite that the signal of imprinting or imprinting receives from the first tuning modulator, the power supply circuits of controlling the second tune modulator cut off the power supply to signal source, when described central processing unit needs the different satellite-signal of imprinting at the second tune modulator, control the power supply circuits of second tune modulator signal source is powered again.
Further, described commutation circuit is the single-pole double-throw switch (SPDT) integrated circuit.
Another purpose of the embodiment of the present invention is to provide a kind of satellite signal reception method, and this satellite signal receiving adopts the first tuning modulator and the tuning modulator of second tune modulator two-way, and described method comprises the steps:
When the first tuning demodulator receiving satellite signal is play, when the second tune modulator does not need to carry out satellite that the signal of imprinting or imprinting receives from the first tuning modulator, close the satellite signal receiving of second tune modulator, the satellite-signal ring cutting that the first tuning modulator is received is to the second tune modulator.
Further, also comprise the steps: that the second tune modulator is receiving satellite signal again when needing the different satellite-signal of imprinting, the signal that the second tune modulator receives switches back the second tune modulator.
Further.Described the first tuning demodulator receiving satellite signal is play and is comprised: receive same programme signal under same satellite and the different programme signals under same satellite.
Further, described method also comprises after the second tune modulator is switched to the satellite-signal step that receives the first tuning modulator:
The first tuning modulator receives the signal input of satellite;
The first tuning modulator and second tune modulator complete respectively the parsing to signal, and the signal after resolving is play respectively and imprinting.
The present invention is by a kind of satellite signal receiving apparatus and method, by changing the signal connected mode of original satellite receiver, make at imprinting program and broadcast program during from same satellite signal source, receive signal by a tuning device processed in road, afterwards a tuning device processed in road is received to the identical or different TV programme signal of coming and divide other broadcasting and imprinting, reduce the power consumption of double tunning modulator, more stable and reliable while making the TV programme of double tunning modulator under receiving same satellite.
The accompanying drawing explanation
Fig. 1 is the structure chart of a kind of satellite signal receiving apparatus of providing of first embodiment of the invention;
Fig. 2 is the structure chart of the rectification circuit schematic diagram of a kind of satellite signal receiving apparatus commutation circuit of providing of first embodiment of the invention; And
Fig. 3 is the realization flow figure of a kind of satellite signal reception method of providing of second embodiment of the invention.
Embodiment
In order to make purpose of the present invention, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein, only in order to explain the present invention, is not intended to limit the present invention.This satellite signal receiving apparatus, comprise the first tuning modulator and the tuning modulator of second tune modulator two-way, also comprises the commutation circuit be connected with the tuning modulator of two-way respectively.This satellite signal receiving apparatus, when the first tuning demodulator receiving satellite signal is play, when the second tune modulator does not need to carry out satellite that the signal of imprinting or imprinting receives from the first tuning modulator, close the satellite signal receiving of second tune modulator, the satellite-signal ring cutting that commutation circuit receives the first tuning modulator is to the second tune modulator.
In addition, when satellite signal receiving apparatus needs the different satellite-signal of imprinting, be that the second tune modulator is need to receive other satellite-signals and carry out imprinting the time, the second tune modulator reopens satellite signal receiving, and the signal that commutation circuit receives the second tune modulator switches back the second tune modulator.
Certainly, the first tuning modulator and second tune modulator can exchange, be that second tune modulator receiving satellite signal is play, the first tuning modulator imprinting, commutation circuit is according to the situation of the first tuning modulator imprinting, by the first tuning modulator ring cutting to the second tune modulator or switch back the first tuning modulator.
Below in conjunction with specific embodiment, specific implementation of the present invention is described in detail:
embodiment mono-:
Fig. 1 shows the structure chart of a kind of satellite signal receiving apparatus that first embodiment of the invention provides, and for convenience of explanation, only shows the part relevant to the embodiment of the present invention.
Satellite signal receiving apparatus comprises respectively the tuning modulator of two-way, is the first tuning modulator and second tune modulator, and wherein the tuning modulator in each road comprises signal source, tuner, modulation circuit and power supply circuits.The signal source of each tuning modulator in road, tuner, modulation circuit connect successively.Power supply circuits are connected with signal source, and signal source is powered or cut off the power supply, and by controlling the power supply start signal source satellite signal receiving to signal source, by controlling, satellite signal receiving are closed in the outage control signal source of signal source.The first concrete tuning modulator comprises: signal source 1, power supply circuits 1, tuner 1, modulation circuit 1.The second tune modulator comprises: signal source 2, power supply circuits 2, tuner 2, modulation circuit 2.
The commutation circuit of satellite signal receiving apparatus is two, is respectively the first commutation circuit 1 and the second commutation circuit 2.Concrete, the first commutation circuit 1 is connected between the signal source 1 and tuner 1 of the first tuning modulator, and is connected with the power supply circuits 1 of the first tuning modulator and the tuner 2 of second tune modulator.The first commutation circuit 1, when 1 pair of signal source of power supply circuits 1 outage of the first tuning modulator, switches to the tuner 2 of second tune modulator, by the satellite-signal ring cutting of tuner 2 to tuner 1.The second commutation circuit 2 is connected between the signal source 2 and tuner 2 of second tune modulator, and is connected with the power supply circuits 2 of second tune modulator and the tuner 1 of the first tuning modulator.The second commutation circuit 2, when 2 pairs of signal sources of power supply circuits 2 outage of second tune modulator, switches to the tuner 1 of the first tuning modulator, by the satellite-signal ring cutting of tuner 1 to tuner 2.
In the specific implementation process of the present invention design, commutation circuit is automatically to select diverter switch according to the electric power thus supplied of signal source, and whether according to, imprinting or which kind of satellite-signal of imprinting determine the electric power thus supplied of signal source.To the judgement of the electric power thus supplied of signal source, be wherein power supply or the outage to signal source according to power supply circuits.In the situation that power supply circuits are powered to signal source, signal source can directly receive the signal that satellite sends, and signal source transfers signals to the commutation circuit of connection later at the signal that receives the satellite transmission, then be transferred to tuner and modulation circuit again; In the situation that power supply circuits are to signal source outage, the signal source of outage is receiving satellite signal no longer, and the commutation circuit be connected with this signal source switches on the tuner on another road, receives the signal that the tuner ring cutting of another tuning modulator in road goes out.
Play and illustrate with the first tuning modulator receiving satellite signal, when the first tuning modulator receiving satellite signal is play, 1 power supply of 1 pair of signal source of the power supply circuits of the first tuning modulator, signal source 1 receiving satellite signal.When the second tune modulator does not need to carry out satellite that the signal of imprinting or imprinting receives from the first tuning modulator, just close the satellite signal receiving of second tune modulator, now power supply circuits 2 are accepted to control to signal source 2 outages, commutation circuit 2 is when signal source 2 outage, switch to tuner 1, with tuner 1, be communicated with, the tuner 2 by the satellite-signal ring cutting of tuner 1 to the second tune modulator, with the satellite-signal of the shared signal source of the first tuning modulator.
When the second tune modulator needs the different satellite-signal of imprinting, now need to open the satellite reception of second tune modulator, power supply circuits 2 are accepted to control signal source 2 are restarted to power supply, and signal source 2 starts receiving satellite signals.Commutation circuit 2 detects signal source 2 while again powering, and by being connected with tuner 1 again to switch back with signal source 2, is connected, and the second tune modulator carries out imprinting to different satellite-signals.。
The commutation circuit in use input of commutation circuit only is connected with signal source or only is connected with another road tuner, the signal source connected when commutation circuit is during without power supply, commutation circuit automatically switches on the tuner of another the tuning modulator in road be connected with commutation circuit, carry out the signal reception from another road tuner, and when the signal source of commutation circuit connection has power supply, commutation circuit is connected on the signal source of the tuning modulator in place, from the signal source connected, carries out the signal reception.
In the specific implementation process of the present invention's design, this satellite receiver also comprises central processing unit, and central processing unit is connected with tuner, modulator and the power supply circuits of the tuning modulator of two-way respectively by the I2C bus.When central processing unit does not need to carry out at the second tune modulator satellite that the signal of imprinting or imprinting receives from the first tuning modulator, the power supply circuits of controlling the second tune modulator cut off the power supply to signal source.When central processing unit needs the different satellite-signal of imprinting at the second tune modulator, control the power supply circuits of second tune modulator signal source is powered again.
In further execution mode, commutation circuit can be selected radio frequency single-pole double-throw switch (SPDT) integrated circuit (SPDT), the logic of controlling needs to convert to by the power supply 13V/18V by signal source the 3.3V of digital logic signal, and need to be by the 22KHz target signal filter.The rectification circuit of concrete commutation circuit as shown in Figure 2, the signal of power supply circuits is through the resistance current limliting, capacitor filtering, the voltage-stabiliser tube voltage stabilizing, the d. c. voltage signal of final stable output is in order to connect commutation circuit, when inputting 1 input that is set to signal source, realize that like this signal source has signal to automatically switch to the signal source, receive signal of telecommunication input by connecting tuner during the signal source no signal, in the present invention, in concrete implementation procedure, power supply circuits can adopt the A8292 of Allegro company as design vector, this pair of low noise frequency reducing conversion pressurizer is monolithic linear/switching regulator, be exclusively used in by coaxial cable power and interface signal are passed to two power supply circuits step-down conversions.By less outer member, there is the boosted switch and the compensating circuit that are integrated in device simultaneously.Select a higher switching frequency, to minimize the size of passive filter element, further can reduce costs.By adopting, high level element is integrated guarantees extremely low noise and the figure of pulsing.Control system adopts the I2C control bus to control the duplex feeding circuit and realizes independently power supply, and A8292 supports inside and outside generation 22KHz mode, for realizing DiSEqC(Digital Satellite Equipment Control) digital satellite equipment control, adopt the outside DiSEqC of generation in the design, and A8292 just is applied to the DiSEqC order in power supply as bypass functionality, can simplify Software for Design like this, increase the flexibility of controlling.In embodiments of the present invention, tuner and modulation circuit are used control bus I2C, intermediate-freuqncy signal IQ, automatic gain to control the AGC signal, and can carry out different hardware designs in conjunction with different tuners and modulation circuit.
In the present invention in concrete signal controlling implementation process, system is controlled by adopting I2C to carry out signal controlling, carrying out the signal empty packet by the mode of I2C can save extra I/O interface and control commutation circuit and carry out the circuit switching, when whole system is controlled, if during the signal in play signal source 1, signal source 1 power supply is in the normal power supply state, as normal satellite receiver, whole satellite receiver is also supported the orders such as DisEqc1.0/1.1/1.2/2.0, if do not need to carry out imprinting, the power supply circuits 2 of signal source 2 are closed the power supply to signal source 2, if need to carry out imprinting in progress program, the power supply of 2 pairs of signal sources 2 of power supply circuits is also in closed condition, and commutation circuit 2 automatically switches to tuner 1 according to the electric power thus supplied of signal source 2 and gets on to carry out the signal reception, realize playing the function of imprinting same satellite signal source, if and while needing the program of another road signal under the same satellite of imprinting, the power supply of 2 pairs of signal sources 2 of power supply circuits is in closed condition, commutation circuit 2 is switched to tuner 1 according to the RST of signal source 2 and gets on to carry out the signal reception, realize the function of the different programs of broadcasting imprinting same satellite signal source, the different programs of playing under the different satellites of imprinting when needs are the power supply of 2 pairs of signal sources 2 of power supply circuits to be opened, now can realize playing the function of the different programs of the different satellite signal sources of imprinting.
The embodiment of the present invention by the way, a kind of satellite signal receiving apparatus, when the first tuning demodulator receiving satellite signal, play, when the second tune modulator does not need to carry out satellite that the signal of imprinting or imprinting receives from the first tuning modulator, receive the signal input under same satellite by the signal source of only using one of them tuning modulator of double tunning modulator, do not use the commutation circuit of the tuning modulator of signal source to be connected on the tuner of another tuning modulator in road, carry out the signal reception from the tuner connected, final two travel permit telegons complete respectively the parsing to signal, and the signal after resolving is play respectively and imprinting, make and only need a signal source to carry out work, when a signal source is carried out the work reception from the identical or different program of same satellite signal source, produce the problem of disturbing in the time of two signal sources can not occur receiving from same satellite-signal simultaneously, the identical or different program simultaneously received from same satellite signal source by a signal source also can reduce the power consumption of double tunning modulator, close a signal source realize to reduce power consumption not needing to carry out imprinting when the second tune modulator.
embodiment bis-:
Fig. 3 shows the realization flow of a kind of satellite signal reception method that second embodiment of the invention provides, and details are as follows:
S301, when the first tuning demodulator receiving satellite signal is play, when the second tune modulator does not need to carry out satellite that the signal of imprinting or imprinting receives from the first tuning modulator, close the satellite signal receiving of second tune modulator.
Detection wants whether the program of imprinting and the program of broadcasting are that signal or the second tune modulator sent by same satellite do not need to carry out imprinting, when the first tuning demodulator receiving satellite signal being detected, play, when the second tune modulator does not need to carry out satellite that the signal of imprinting or imprinting receives from the first tuning modulator, be that imprinting program and broadcast program are when same signal source, close the power supply of second tune modulator to the secondary signal source, wherein it should be noted that the numbering between the tuning modulator of two-way can exchange, preferably, close the second tune modulator mode of the power supply in secondary signal source is closed to the power supply of the power supply circuits of second tune modulator to the secondary signal source for by central processing unit, controlling power supply circuits, in the satellite reception machine equipment of double tunning modulator, each tuning modulator has independent power supply circuits, when tuning modulator normal operation, independent power supply circuits are powered to the signal source of tuning modulator, and when signal source is not powered, signal source can't receive signal, now signal source is no signal condition.
S302, the satellite-signal ring cutting that the first tuning modulator is received is to the second tune modulator.
The commutation circuit of second tune modulator automatically switches to the tuner of the first tuning modulator and is connected, now the second tune modulator can pass through commutation circuit, receive the signal input from the tuner of the first tuning modulator.
S303, the first tuning modulator receives the signal input of satellite; The first tuning modulator and second tune modulator complete respectively the parsing to signal, and the signal after resolving is play respectively and imprinting.
The first tuning modulator receives the signal input under same satellite by the first signal source; Signal input under the same satellite that wherein optional the first modulator receives comprises: receive same programme signal input under same satellite and the different programme signals under same satellite and input.The first tuner is distributed to respectively the first tuner by signal and the second tune device is processed afterwards, the mode of distributing can be assigned to respectively modulator by different input signals by central processing unit and carry out, perhaps central processing unit is assigned to different modulators by identical signal and is play and imprinting, also can automatically distribute according to information such as frequencies, tuner and the demodulator circuit of the first tuning modulator and second tune modulator complete respectively the parsing to signal, and respectively the signal after resolving is play and imprinting, realize only by a signal source, receiving the identical or different programme signal under same satellite, identical or different programme signal is carried out to synchronous broadcasting and recording function.
The embodiment of the present invention by the way, a kind of satellite signal reception method, a kind of satellite signal reception method is provided, when the first tuning demodulator receiving satellite signal is play, when the second tune modulator does not need to carry out satellite that the signal of imprinting or imprinting receives from the first tuning modulator, by only using a signal source to receive from the identical or different program under same satellite, in the situation that only have a signal source to be worked to broadcasting and the imprinting of program, making by mixing two modes of coordinating to realize only having a signal source also can carry out synchronous RW and broadcasting to the program under same satellite.
One of ordinary skill in the art will appreciate that all or part of step realized in above-described embodiment method is to come the hardware that instruction is relevant to complete by program, described program can be stored in computer read/write memory medium, described storage medium, as ROM/RAM, disk, CD etc.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any modifications of doing within the spirit and principles in the present invention, be equal to and replace and improvement etc., within all should being included in protection scope of the present invention.
Claims (10)
1. a satellite signal receiving apparatus, comprise the first tuning modulator and the tuning modulator of second tune modulator two-way, it is characterized in that, described device also comprises the commutation circuit be connected with the tuning modulator of two-way respectively, when the first tuning demodulator receiving satellite signal is play, when the second tune modulator does not need to carry out satellite that the signal of imprinting or imprinting receives from the first tuning modulator, close the satellite signal receiving of second tune modulator, the satellite-signal ring cutting that described commutation circuit receives the first tuning modulator is to the second tune modulator.
2. satellite signal receiving apparatus as claimed in claim 1, it is characterized in that, when described device needs the different satellite-signal of imprinting, the second tune modulator reopens satellite signal receiving, and the signal that described commutation circuit receives the second tune modulator switches back the second tune modulator.
3. satellite signal receiving apparatus as claimed in claim 2, it is characterized in that, the tuning modulator in each road includes: signal source, power supply circuits, tuner, modulation circuit, wherein said signal source, tuner, modulation circuit connect successively, described power supply circuits are connected with signal source, signal source is powered or cut off the power supply, by controlling the power supply start signal source satellite signal receiving to signal source, by controlling, satellite signal receiving is closed in the outage control signal source of signal source.
4. satellite signal receiving apparatus as claimed in claim 3, it is characterized in that, described commutation circuit is two, be respectively the first commutation circuit and the second commutation circuit, wherein the first commutation circuit is connected between the signal source and tuner of the first tuning modulator, and be connected with the power supply circuits of the first tuning modulator and the tuner of second tune modulator, when described the first commutation circuit is cut off the power supply to signal source at the power supply circuits of described the first tuning modulator, switch to the tuner of second tune modulator;
The second commutation circuit is connected between the signal source and tuner of second tune modulator, and be connected with the power supply circuits of second tune modulator and the tuner of the first tuning modulator, when described the second commutation circuit is cut off the power supply to signal source at the power supply circuits of described second tune modulator, switch to the tuner of the first tuning modulator.
5. device as claimed in claim 4, it is characterized in that, described device also comprises central processing unit, described central processing unit by the I2C bus respectively with the tuner of the tuning modulator of two-way, modulator and power supply circuits connect, when described central processing unit does not need to carry out at the second tune modulator satellite that the signal of imprinting or imprinting receives from the first tuning modulator, the power supply circuits of controlling the second tune modulator cut off the power supply to signal source, when described central processing unit needs the different satellite-signal of imprinting at the second tune modulator, controlling the power supply circuits of second tune modulator powers again to signal source.
6. described device as arbitrary as claim 1 to 5, is characterized in that, described commutation circuit is the single-pole double-throw switch (SPDT) integrated circuit.
7. a satellite signal reception method, this satellite signal receiving adopts the first tuning modulator and the tuning modulator of second tune modulator two-way, it is characterized in that, and described method comprises the steps:
When the first tuning demodulator receiving satellite signal is play, when the second tune modulator does not need to carry out satellite that the signal of imprinting or imprinting receives from the first tuning modulator, close the satellite signal receiving of second tune modulator, the satellite-signal ring cutting that the first tuning modulator is received is to the second tune modulator.
8. satellite signal reception method as claimed in claim 7, it is characterized in that, also comprise the steps: that the second tune modulator is receiving satellite signal again when needing the different satellite-signal of imprinting, the signal that the second tune modulator receives switches back the second tune modulator.
9. method as claimed in claim 7, is characterized in that, described the first tuning demodulator receiving satellite signal is play and comprised: receive same programme signal under same satellite and the different programme signals under same satellite.
10. method as claimed in claim 7, is characterized in that, described method also comprises after the second tune modulator is switched to the satellite-signal step that receives the first tuning modulator:
The first tuning modulator receives the signal input of satellite;
The first tuning modulator and second tune modulator complete respectively the parsing to signal, and the signal after resolving is play respectively and imprinting.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114025223A (en) * | 2021-11-15 | 2022-02-08 | 海信电子科技（深圳）有限公司 | Channel switching method in video recording state and display equipment |
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| CN103442274B (en) | 2017-11-07 |
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