CN102510460B - Digital television satellite receiver and user band (UB) installation method thereof - Google Patents
Digital television satellite receiver and user band (UB) installation method thereof Download PDFInfo
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Abstract
The invention provides a user band (UB) installation method of a digital television satellite receiver and the digital television satellite receiver. In the user band installation method of the digital television satellite receiver, the UB of the receiver is installed through the UB which is used in the last installation of the receiver and is vacant or interacts with Uinicable equipment to obtain the UB information that the vacant UB corresponds, and then the UB of the receiver is installed according to the UB information corresponding to the vacant UB, so that the condition that the user band is seized to enable a program not to be normally watched when a plurality of receivers simultaneously specify the same UB to cause installation conflict can be avoided, each receiver corresponds to one UB, and further, a system is stable. Correspondingly, the invention also provides the digital television satellite receiver.
Description
Technical field
The present invention relates to satellite television and receive field, a kind of method that relates in particular to Digital Television satellite receiver and user's frequency band is installed.
Background technology
Along with the requirement of growing satellite television subscribers to content of multimedia and HDTV (High-Definition Television) ease for use, the digital VTR (Digital Video Recorder, DVR) of satellite high definition receiver and multi-tuner is extensively adopted in the family.But, at traditional direct broadcasting satellite (Direct Broadcasting Satellite, DBS) in installing, in the face of the satellite receiver of a plurality of high-frequency tuners (Tuner) is housed, or a plurality of satellite receiver, in order to make DBS outdoor unit (ODU, Out-door Unit) be connected with these tuners, need many independently cables, make like this complexity of installation higher, and cable laying cost is higher.
At present, the technology that is transmitted and distributed Ku band satellite signal by a coaxial cable has been developed in Europe, it is Unicable technology, and in 2007, formally become European industry standard-Cenelec EB50494, full name is " Satellite signal distribution over a single coaxial cable in single dwelling installation ".Unicable technology provides open software platform, as long as satellite receiver can receive 950-2150MHz normal range (NR) internal intermediate frequency frequency, and there is DiSEqC(Digital Satellite Equipment Control, digital satellite equipment control) support function, then revise software program, can become Unicable receiver.By the mono-cable of Unicable() coaxial cable having laid of technology utilization, coordinate Unicable equipment, make simple installation, and cost.Wherein, DiSEqC is the standard of an opening, and it has defined the standardization bus protocol that only uses existing coaxial cable communication between satellite receiver and satellite peripheral hardware.
The general maximum of Unicable equipment can be supported 8 or 12 user's frequency ranges (user band, UB), and each UB can only be used by a satellite receiver or a Tuner.And the mono-cable of this Unicable() mounting means between equipment and satellite receiver is generally static mode, and each Tunner of user's specified satellite receiver or satellite receiver is used some UB of Unicable.This mounting means is simple, is conventionally applicable to single family, and each family is used a Unicable.Yet, when a Unicable equipment is shared by a plurality of families, because user does not know which UB on unicable is idle (or available), thereby occur that a plurality of satellite receiver are used same UB's, produce conflict is installed, and then cause normally TV reception of receiver.
Summary of the invention
Embodiment of the present invention technical problem to be solved is, a kind of method that Digital Television satellite receiver is provided and user's frequency band is installed, can avoid a plurality of receivers to specify a UB simultaneously and produce installation conflict, there is seizing the situation that UB causes normally watching program, thus the stability of the system of assurance.
In order to solve the problems of the technologies described above, the embodiment of the present invention provides a kind of Digital Television satellite receiver that the method for user's frequency band is installed, and comprising:
Carry out alternately with single cable machinery, whether the user's frequency band using while judging the last installation of receiver is idle, obtains the first judged result,
Judgment result is that while being when described first, the user's frequency band using while installing according to this last time carries out user's frequency band of this receiver and installs;
When described first when the determination result is NO, carry out alternately, obtaining user's band information that free subscriber frequency band is corresponding with single cable machinery;
According to user's band information corresponding to described free subscriber frequency band, carrying out user's frequency band of this receiver installs.
Wherein, described and single cable machinery carries out alternately, and whether the user's frequency band using while judging the last installation of receiver is idle, and the step that obtains the first judged result comprises:
The corresponding user's band information of user's frequency band that the last time of obtaining this receiver from the local storage of this receiver is used while installing, this user's band information comprises user's reel number frequently, and with this user center frequency point that reel number mates frequently;
The corresponding user's band information of user's frequency band using during according to described last installation, carries out alternately with single cable machinery, and whether the user's frequency band using while judging the last installation of receiver is idle, obtains the first judged result.
Wherein, the described corresponding user's band information of user's frequency band using during according to described last installation, carry out alternately with single cable machinery, whether the user's frequency band using while judging the last installation of receiver is idle, and the step that obtains the first judged result comprises:
Whether the corresponding user's band information of user's frequency band using while detecting described last installation is effective, obtains testing result,
When described testing result is while being effective, carry out alternately with single cable machinery, whether the user's frequency band using when judging that receiver is last and installing is idle, obtains the first judged result;
When described testing result is while being invalid, carry out alternately, obtaining user's band information that free subscriber frequency band is corresponding with single cable machinery.
Wherein, when described first when the determination result is NO, carry out alternately with single cable machinery, the step of obtaining user's band information that free subscriber frequency band is corresponding comprises:
Carry out alternately with described single cable machinery, whether the user's frequency band using while judging the last installation of this receiver is that vacation takies, and obtains the second judged result,
Judgment result is that while being when described second, seize described user's frequency band;
When described second when the determination result is NO, carry out alternately, obtaining user's band information that free subscriber frequency band is corresponding with single cable machinery.
Wherein, describedly when described second when the determination result is NO, carry out alternately, obtaining the step of user's band information that free subscriber frequency band is corresponding with single cable machinery, specifically comprise:
To center frequency point corresponding to all free subscriber frequency bands of described single cable machinery request;
From center frequency point corresponding to all free subscriber frequency bands, select an effective center frequency point;
According to described effective center frequency point, the user of mating with described effective center frequency point to described single cable machinery request is reel number frequently.
Wherein, the method for Digital Television satellite receiver installation user frequency band of the present invention also comprises:
When carrying out user's frequency band of this receiver according to user's band information corresponding to described free subscriber frequency band while installing unsuccessfully, travel through all user's frequency bands, carry out user's frequency band of this receiver and install.
Wherein, user's frequency band that described direct traversal is all, the step of carrying out user's frequency band installation of this receiver, comprising:
Directly to user's frequency band of single cable machinery request;
Whether user's frequency band that judgement is asked is idle, obtains the 3rd judged result,
Judgment result is that while being when the described the 3rd, according to asked user's frequency band, carry out the installation of user's frequency band of this receiver;
When the described the 3rd when the determination result is NO, directly to the next user's frequency band of described single cable machinery request, and judge with single cable machinery that alternately whether described next user's frequency band is idle, if described next user's frequency band is idle, according to this next one user frequency band, carry out the installation of user's frequency band of this receiver, if described next user's frequency band is not idle, to single cable machinery request next user's frequency band again, until find idle user's frequency band.
Wherein, described when the described the 3rd when the determination result is NO, directly to the next user's frequency band of described single cable machinery request, and judge with single cable machinery that alternately whether described next user's frequency band is idle, if described next user's frequency band is idle, according to this next one user frequency band, carry out the installation of user's frequency band of this receiver, if described next user's frequency band is not idle, to single cable machinery request next user's frequency band again, until find the step of idle user's frequency band, specifically comprise:
Carry out alternately with described single cable machinery, whether user's frequency band that judgement is asked is that vacation takies, and obtains the 4th judged result,
Judgment result is that while being when the described the 4th, seize described user's frequency band;
When the described the 4th when the determination result is NO, directly to the next user's frequency band of described single cable machinery request, and judge with single cable machinery that alternately whether described next user's frequency band is idle, if described next user's frequency band is idle, according to this next one user frequency band, carry out the installation of user's frequency band of this receiver, if described next user's frequency band is not idle, carry out alternately with described single cable machinery, judge whether described next user's frequency band is that vacation takies, if described next user's frequency band is that vacation takies, seize described next user's frequency band, if not being vacation, described next user's frequency band do not take, to single cable machinery request next user's frequency band again, until find idle user's frequency band.
Wherein, the method for Digital Television satellite receiver installation user frequency band of the present invention also comprises:
The user's frequency band using when installing according to this last time carries out after user's frequency band successful installation of this receiver, or when carrying out according to user's band information corresponding to described free subscriber frequency band after user's frequency band successful installation of this receiver, to described single cable machinery, send zapping request command
Carry out alternately, judging whether to occur the conflict of zapping request command with described single cable machinery, if resend described zapping request command.
The embodiment of the present invention also provides a kind of Digital Television satellite receiver, comprising:
The first judge module, for carrying out alternately with single cable machinery, whether the user's frequency band using while judging the last installation of this receiver is idle, obtains the first judged result;
The first installation module, for judgment result is that while being described first, the user's frequency band using while installing according to this last time carries out user's frequency band of this receiver and installs;
User's band information acquisition module, for, carrying out alternately, obtaining user's band information that free subscriber frequency band is corresponding with single cable machinery when the determination result is NO described first;
The second installation module, carries out user's frequency band of this receiver and installs for user's band information corresponding to free subscriber frequency band obtaining according to described user's band information acquisition module.
Wherein, described Digital Television satellite receiver also comprises:
Memory module, for storing user's band information corresponding to user's frequency band using when this receiver is last to be installed, described user's band information comprises user's reel number frequently, and the center frequency point of mating with this user's frequency reel number;
Described the first judge module comprises:
Local information is obtained submodule, for obtain the corresponding user's band information of user's frequency band using when this receiver is last to be installed from described memory module;
Judgement submodule, for obtain the corresponding user's band information of user's frequency band that last time that submodule obtains used while installing according to described local information, carry out alternately with single cable machinery, whether the user's frequency band using while judging the last installation of receiver is idle, obtains the first judged result.
Wherein, described judgement submodule comprises:
Whether effective detecting unit, obtain for detection of described local information user's band information that user's frequency band that last time that submodule obtains from described memory module used while installing is corresponding, obtains testing result;
Idle determination unit, while being effective for the testing result at described detecting unit, carries out alternately with single cable machinery, and whether the user's frequency band using while judging the last installation of receiver is idle, obtains the first judged result;
When user's band information acquisition module is also invalid for the testing result at described detecting unit, carry out alternately, obtaining user's band information that free subscriber frequency band is corresponding with single cable machinery.
Wherein, described Digital Television satellite receiver also comprises:
Vacation takies judge module, in first when the determination result is NO of described the first judge module, carries out alternately with single cable machinery, and whether user's frequency band that judgement is last to be used while installing is that vacation takies, and obtains the second judged result;
Seize module, for take second of judge module when described vacation, judgment result is that while being, seize this user's frequency band;
User's band information acquisition module also, for take second when the determination result is NO of judge module when described vacation, carries out alternately, obtaining user's band information that free subscriber frequency band is corresponding with single cable machinery.
Wherein, described user's band information acquisition module comprises:
Center frequency point request unit, for to center frequency point corresponding to all free subscriber frequency bands of single cable machinery request;
Center frequency point selected cell, selects an effective center frequency point for center frequency point corresponding to user's frequency band from available free;
User is reel number request unit frequently, for according to the selected effective center frequency point of described selected cell, and the user of mating with this center frequency point to single cable machinery request frequency reel number.
Wherein, the Digital Television satellite receiver described in this also comprises:
The 3rd installation module, when the user's frequency band that carries out this receiver for user's band information corresponding to free subscriber frequency band that obtain according to user's band information acquisition module at described the second installation module is installed unsuccessfully, directly all user's frequency bands of traversal, carry out user's frequency band of this receiver and install.
Wherein, described the 3rd installation module comprises:
Request submodule, when the user's frequency band that carries out this receiver for user's band information corresponding to free subscriber frequency band that obtain according to user's band information acquisition module at described the second installation module is installed unsuccessfully, directly to user's frequency band of single cable machinery request;
The 3rd judgement submodule, whether idle for judging user's frequency band that described request submodule asks, obtain the 3rd judged result;
First installs submodule, for obtain the 3rd when described the 3rd judgement submodule, judgment result is that while being, direct user's frequency band of asking according to described request submodule carries out the installation of user's frequency band of this receiver;
Second installs submodule, for judging when obtaining the 3rd by submodule the determination result is NO when the described the 3rd, directly to the next user's frequency band of single cable machinery request, and judge that whether it is idle, if described next user's frequency band is idle, according to this next one user frequency band, carry out the installation of user's frequency band of this receiver, if described next user's frequency band is not idle, to single cable machinery request next user's frequency band again, until find idle user's frequency band.
Wherein, described vacation takies judge module also in the 3rd when the determination result is NO of described the 3rd judgement submodule, carries out alternately with single cable machinery, judges whether user's frequency band of asking is that vacation takies, and obtains the 4th judged result;
The described module of seizing, judgment result is that while being for take the 4th of judge module when described vacation, seizes this user's frequency band;
Described second installs submodule, also for when the 4th when the determination result is NO, directly to the next user's frequency band of described single cable machinery request, and judge with single cable machinery that alternately whether described next user's frequency band is idle, if described next user's frequency band is idle, according to this next one user frequency band, carry out the installation of user's frequency band of this receiver, if described next user's frequency band is not idle, carry out alternately with described single cable machinery, judge whether described next user's frequency band is that vacation takies, if described next user's frequency band is that vacation takies, seize described next user's frequency band, if not being vacation, described next user's frequency band do not take, to single cable machinery request next user's frequency band again, until find idle user's frequency band.
Wherein, described Digital Television satellite receiver also comprises:
Control module, the user's frequency band using while being used for once installing in described the first installation module basis carries out after user's frequency band successful installation of this receiver, or described the second installation module carries out after user's frequency band successful installation of this receiver according to user's band information corresponding to free subscriber frequency band that obtain, to single cable machinery, send zapping command request;
Collision detection module, for sending after zapping command request to single cable machinery in described control module, carries out alternately with single cable machinery, detects whether zapping command collision occurs;
Retransmit module, while there is zapping command collision for detecting in described collision detection module, sends zapping command request to single cable machinery again.
Implement the embodiment of the present invention, there is following beneficial effect:
Receiver installation method of the present invention and receiver, whether the UB using when judging alternately that this receiver is last and install with Unicable equipment is idle, when the free time, directly according to this UB, carry out the UB installation of this receiver, otherwise continue with this Unicable equipment mutual, obtain the UB information that idle UB is corresponding, and install according to the UB that the UB information getting is alternately carried out this receiver, the situation that occurs conflict be installed while having avoided a plurality of receivers to use idle user's frequency band simultaneously and cause normally watching program, thereby guaranteed the corresponding UB of each receiver, and then make system stability, and intelligent.
In receiver installation method of the present invention, the UB using when also the last time is installed carries out the judgement that vacation takies, avoid the impact due to interference signal, and cause wrong idle user's frequency band being thought to occupied user's frequency band, thereby guaranteed the high usage of user's frequency band of system, and then made system more stable and intelligent.
In receiver installation method of the present invention, after installation, when receiver sends zapping order, also carry out the detection of zapping command collision and Restoration Mechanism, make it possible to whether system command collision is occurred to and detect, and take appropriate measures, thereby make user can normally watch program.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the flow chart of an embodiment of a kind of Digital Television satellite receiver of the present invention method that user's frequency band is installed;
Fig. 2 is that a kind of Digital Television satellite receiver of the present invention is installed in the method for user's frequency band the flow chart whether UB that uses when judgement is last installs is the embodiment that takies of vacation;
It is mutual with Unicable equipment that Fig. 3 is that a kind of Digital Television satellite receiver of the present invention is installed in the method for user's frequency band, obtains the flow chart of an embodiment of the UB information that idle UB is corresponding;
Fig. 4 is the flow chart of the another embodiment of a kind of Digital Television satellite receiver of the present invention method that user's frequency band is installed;
Fig. 5 is that a kind of Digital Television satellite receiver of the present invention is installed the flow chart of an embodiment again of the method for user's frequency band;
Fig. 6 is the functional block diagram of the embodiment mono-of a kind of Digital Television satellite receiver of the present invention;
Fig. 7 is the structured flowchart of an embodiment of the first judge module of a kind of Digital Television satellite receiver of the present invention;
Fig. 8 is the structured flowchart of embodiment mono-of the judgement submodule of a kind of Digital Television satellite receiver of the present invention;
Fig. 9 is the structured flowchart of the embodiment bis-of a kind of Digital Television satellite receiver of the present invention;
Figure 10 is the functional block diagram of the embodiment tri-of a kind of Digital Television satellite receiver of the present invention;
Figure 11 is the functional block diagram of the embodiment tetra-of a kind of Digital Television satellite receiver of the present invention.
Embodiment
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 clearly and completely described, obviously, described embodiment is only the present invention's part embodiment, rather than whole embodiment.Embodiment based in the present invention, those of ordinary skills, not making the every other embodiment obtaining under creative work prerequisite, belong to the scope of protection of the invention.
The invention provides the installation method of a kind of Digital Television satellite receiver and user's frequency band thereof, mutual by between Digital Television satellite receiver and Unicable equipment, the UB that realizes receiver installs, and guarantee each receiver UB of a corresponding free time, while having avoided manual installation, a plurality of receivers are selected when not knowing those UB for the free time same UB to cause conflict is installed, thereby made system more reliable and more stable, simultaneously this system intelligent.
Referring to Fig. 1, for a kind of Digital Television satellite receiver of the present invention is installed the flow chart of an embodiment of the method for user's frequency band.The specific implementation process of the method for the Digital Television satellite receiver installation UB of the present embodiment is as follows:
S101, carries out alternately with Unicable equipment, and whether the UB using when judging that receiver is last and installing idle, obtains the first judged result, if this first judgment result is that and be, perform step S102, if first the determination result is NO for this, perform step S103.Conventionally, the corresponding UB of receiver in system, when this receiver is during in closed condition, its corresponding UB is idle, unless accessed new receiver in this system, this UB is taken by other receivers.
S102, the UB that the UB using while installing according to this last time carries out this receiver installs.The prerequisite of carrying out this step is that step S101 obtains first and judgment result is that and be.During concrete enforcement, the state of the UB that the receiver request ODU last time is used while installing is set to " taking ", and ODU returns to response results " YES ", successful installation.
S103, carries out alternately, obtaining the UB information that idle UB is corresponding with Unicable equipment.UB information corresponding to this free time UB in the present embodiment comprises No. UB, and the center frequency point corresponding with this No. UB.
S104, carries out the installation of the UB of this receiver according to the UB information that the idle UB obtaining is corresponding.During concrete enforcement, receiver is according to the UB information of the idle UB obtaining, and to ODU request, by be set to " taking " of this free time UB, ODU returns to this receiver response results " YES ", successful installation.
In another specific embodiment, carry out alternately with Unicable equipment, whether the UB using while judging receiver one installation last time is idle, and the step that obtains the first judged result also comprises before:
From the local storage of this receiver, obtain UB information corresponding to UB of using when this receiver is last to be installed, this UB information comprises No. UB and/or the center frequency point corresponding with this No. UB.In one embodiment, receiver obtains last mount message from the storage of this locality, UB information corresponding to UB that this mount message has been used while having comprised last installation, comprise No. UB and/or the center frequency point corresponding with this No. UB, thus UB information corresponding to UB of using when receiver can obtain last installation from this last time mount message.
In another specific embodiment, after the UB information that while obtaining the last installation of this receiver when the local storage from this receiver, the UB of use is corresponding, also comprise:
Whether the UB information that the UB that uses while installing of this that detection is obtained corresponding last time is effective, obtain testing result, if this testing result is effective, carry out alternately with Unicable equipment, whether the UB using while judging the last installation of this receiver is idle, obtains the first judged result, if this testing result is invalid, mutual with Unicable equipment, obtain the UB information that idle UB is corresponding.Because the general maximum of Unicable equipment can be supported 8 or 12 UB, satellite receiver can receive 950-2150MHz normal range (NR) internal intermediate frequency frequency, therefore, during concrete enforcement, whether what judgement was obtained has surpassed 8 or 12 No. UB, or whether corresponding centre frequency is in effective frequency range 950-2150MHz, if this No. UB does not surpass 8 or 12, and corresponding center frequency point is also in effective frequency range 950-2150MHz, show that the UB information of obtaining is effective, otherwise, show that the UB information of obtaining is invalid.In one embodiment, receiver, according to this effective center frequency point and No. UB, is asked this UB to ODU, if this UB is idle, ODU returns to " YES " to receiver, and the state of this UB of receiver request ODU is set to take; If this UB is not idle, ODU returns to " NO " to receiver, and receiver and ODU are mutual, obtain the UB information that idle UB is corresponding.
In a specific embodiment again, when this receiver is not received any response results, resend the UB that request command is used when ODU asks this last time to be installed, until receive response results, be that the present embodiment also provides time delay immediately and retransmission mechanism, thereby upper two order interval <67.5mS due to single cable have been avoided, while there is command collision between receiver and ODU communication, ODU will can not return to response results to receiver, and cause this UB to be considered as occupied UB, and then guaranteed the corresponding idle UB of each receiver, further guaranteed the stability of system.
In another specific embodiment, Digital Television satellite receiver is installed in the method for UB, mutual with Unicable equipment, take to obtain and also comprise that the UB that judge use when this last time installs is whether as vacation takies before the step of the UB information that idle UB is corresponding, when the UB of use is not idle when judging that obtaining this last time installs, further judge whether this UB is that vacation takies.Referring to Fig. 2, while specifically implementing, judge that whether the UB that uses when this installs last time is that the specific implementation process that takies of vacation is as follows:
S201, carry out alternately with Unicable equipment, whether the UB using while judging the last installation of this receiver is that vacation takies, obtain the second judged result, if this second judgment result is that while being, perform step S202, if this is second when the determination result is NO, carry out alternately, obtaining the UB information that idle UB is corresponding with Unicable equipment.The UB using when the prerequisite of carrying out this step obtains last installation for the mutual judgement of this receiver and Unicable equipment is not idle,, when judging UB that this last time used while installing when not idle, just judges whether this UB is that vacation takies.In one embodiment, when with the mutual judgement of ODU obtain UB that this last time installs and uses not idle after, receiver request ODU forces to discharge this UB.If not being vacation, this UB do not take, ODU forces to discharge after this UB, the real receiver of this UB that uses will can't lock signal, i.e. losing lock, after losing lock this receiver can be automatically frequency locking again, ODU is use state by this UB equipment again, now, when this receiver is asked this UB to this ODU again, ODU returns to a response results " NO ", show that this UB is not that vacation takies, execution step S103; Otherwise ODU forces to discharge after this UB, and this receiver is asked this UB to ODU again, and ODU can return to a response results " YES ", shows that this UB is that vacation takies, execution step S202.
S202, seizes the UB that this vacation takies, and installs and finishes.During concrete enforcement, the state of request ODU this free time UB is set to " taking ", and ODU returns to a response results " YES ", successful installation to this receiver.In the present embodiment, after successful installation, upgrade the state of this UB.Whether the present embodiment is that vacation takies by detecting this UB, avoids the wrong UB that vacation is taken to be considered as occupied, thereby guarantees that each receiver can a corresponding UB, improves the utilance of the UB of system, and then makes system more intelligent.
Referring to Fig. 3, for of the present invention mutual with Unicable equipment, obtain the flow chart of an embodiment of the UB information that idle UB is corresponding.During concrete enforcement, mutual with Unicable equipment, the specific implementation process of obtaining the UB information that idle UB is corresponding is as follows:
S301, to the center frequency point of the available free UB of ODU request.In one embodiment, this receiver is to the center frequency point of the available free UB of ODU request, this ODU receives after this request, can in the center frequency point of available free UB, produce RF Tone signal, this receiver is by effective this RF Tone signal of frequency range (being 950-2150MHz) interscan, thereby can obtain the center frequency point of available free UB;
S302 selects an effective center frequency point from the center frequency point of available free UB.Owing to being difficult to distinguish between RF tone signal in practical application and true programme signal or interference signal, be this receiver effective frequency range interscan to a plurality of RF Tone signals in, may there is true programme signal or interference signal, therefore, in specific implementation process, receiver scanning obtains after a plurality of RF Tone signals, to ODU request, remove all RF Tone signals, ODU receives after this request, can remove the RF Tone signal that it produces in the center frequency point of idle to some extent UB, the RF Tone not being eliminated is for being really programme signal or interference signal, thereby really obtain the center frequency point that idle UB is corresponding, it is validated user frequency, therefrom select again an effective center frequency point f1 to carry out follow-up operation, in the present embodiment, this receiver can from the center frequency point of available free UB according to selective sequential center frequency point from high to low, can certainly select at random, or according to selective sequential from low to high.
S303, according to this effective center frequency point, to ODU request, mate with this center frequency point No. UB.In one embodiment, when this receiver has been selected after an effective center frequency point f1, adopt the mode of poll to mate with this center frequency point to ODU request No. UB, be that this receiver is first by a UB(i) and this center frequency point send out f1 and give ODU, request ODU judges this UB(i) whether mate with emerging frequency f1 in this, if coupling, ODU returns to a response results " YES ", execution step S104; If do not mate, return to a response results " NO ", and this receiver sends next UB(i+1) and this center frequency point f1 to ODU, judge, until find No. UB that mates with this center frequency point f1.If do not find No. UB that mates with this center frequency point, this receiver reselects a center frequency point f2, and No. UB of mating to the center frequency point f2 that ODU request reselects with this, as do not found No. UB of coupling, reselect again a center frequency point f3, until find No. UB of coupling.In the present embodiment, this receiver according to selective sequential center frequency point is from high to low; F1>f2>f3.
In another specific embodiment, this receiver is after selecting a center frequency point f1, directly according to this f1 in built-in the searching No. UB that mates with this center frequency point f1 with center frequency point look-up table (lookup table) for No. UB of this receiver, thereby avoided obtaining No. UB that mates with selected f1 by the mode of poll, and then saved the time, and further guarantee the stability of a system.
Referring to Fig. 4, for Digital Television satellite receiver of the present invention is installed the flow chart of another embodiment of the method for user's frequency band.In the present embodiment, receiver installation method is except comprising that step S101 in above-described embodiment, to step S104, also comprises step:
S401, when carrying out the UB of this receiver according to UB information corresponding to idle UB obtained alternately with Unicable equipment while installing unsuccessfully, travels through all UB, carries out the installation of the UB of this receiver.During concrete enforcement, the implementation procedure of this step S401 is as follows:
This receiver is directly to a UB of ODU request; In one embodiment, the UB that receiver is directly 1 No. UB to ODU request;
Judge whether the UB that this No. UB is 1 is idle, obtains the 3rd judged result; In one embodiment, receiver is asked after this UB to ODU, if this UB is idle, ODU returns to this receiver response results " YES ", shows that this UB is idle; If this UB is not idle, ODU returns to receiver response results " NO ", shows that this UB is not idle;
Judgment result is that while being when the 3rd, the UB that carries out this receiver according to this No. UB UB that is 1 installs; In one embodiment, ODU directly the state of this UB be set to " taking ", i.e. successful installation;
When the 3rd when the determination result is NO, directly to ODU, ask next UB, and judge that whether it is idle, if idle, according to this next one UB, install, if not idle, to ODU request next UB again, until find idle UB; In one embodiment, when this is second when the determination result is NO, the UB that this receiver is directly 2 No. UB to ODU request, if this UB is idle, ODU returns to this receiver response results " YES ", and the UB that receiver carries out this receiver according to this No. UB UB that is 2 installs; If not idle, return to response results " NO ", receiver to ODU request at next UB, i.e. No. UB UB that is 3, so circulation, until find idle UB or travel through all UB.
In another specific embodiment, when the 3rd when the determination result is NO, show to be for No. UB 1 UB when not idle, receiver also judges that with ODU whether this UB is that vacation takies, and obtains the 4th judged result alternately, if the 4th judgment result is that while being, seize this UB, if the 4th when the determination result is NO, the UB that is directly 2 No. UB to ODU request, if this UB is idle, according to this UB, install; If this UB is not idle, judge with ODU alternately whether it is that vacation takies, if vacation takies, seizes this UB, if not vacation takies, to ODU, asks next UB again, until find idle UB, or till having traveled through all UB.
In the present embodiment, in step S104, the UB of receiver installs unsuccessfully, refer in step S103 and do not find No. UB that mates with selected center frequency point in receiver, or all RF Tone is interference signal (or true programme signal).
Referring to Fig. 5, for Digital Television satellite receiver of the present invention is installed the flow chart of an embodiment again of the method for user's frequency band.The method that in the embodiment of the present invention, Digital Television satellite receiver is installed UB is except comprising that step S101 in above-described embodiment, to step S104, also comprises step:
S501, sends zapping command request to Unicable equipment.
S502, carries out alternately, judging whether to occur the conflict of zapping command request with Unicable equipment, if clash, and execution step S503, otherwise, execution step S504.
After receiver is installed, because two receivers may be in synchronization zapping, two receivers send zapping request command to ODU simultaneously, thereby there is zapping command collision, make correctly resolve command of ODU, cause the success of receiver zapping successful frequency locking, but do not receive corresponding audio, video data, if this ODU receives this zapping request command, it is processed, and return to PAT and the pmt table of next program.Therefore, while specifically implementing, this receiver receives PAT and the pmt table that ODU sends, and judges that whether this PAT is identical with PAT and the pmt table of a upper program with pmt table, determines the conflict of zapping request command occurs, execution step S503 if identical; If not identical, perform step S504.
S503, resends zapping command request, execution step S502.
S504, receives audio, video data.
Whether the UB that the receiver installation method of the embodiment of the present invention is used when judging alternately that this receiver is last and install with Unicable equipment is idle, when the free time, directly according to this UB, carry out the UB installation of this receiver, otherwise continue with this Unicable equipment mutual, obtain the UB information that idle UB is corresponding, and install according to the UB that the UB information getting is alternately carried out this receiver, the situation that occurs conflict be installed while having avoided a plurality of receivers to use idle user's frequency band simultaneously and cause normally watching program, thereby guaranteed the corresponding UB of each receiver, and then make system stability, and intelligent.
Receiver installation method based on above-mentioned, the present invention also provides a kind of Digital Television satellite receiver, below in conjunction with Fig. 6, Fig. 7, Fig. 8, Fig. 9, Figure 10 and Figure 11, introduces in detail the receiver structure corresponding with said method.
Referring to Fig. 6, it is the functional block diagram of the embodiment mono-of receiver of the present invention.The receiver of the present embodiment comprises:
Memory module 700, for storing UB information corresponding to UB of using when this receiver is last to be installed;
The first judge module 701, for carrying out alternately with Unicable equipment, whether the UB using while judging the last installation of this receiver is idle, obtains the first judged result;
The first installation module 702, first judgment result is that while being, the UB using while installing according to this receiver is last carries out the installation of the UB of this receiver for what obtain in 701 judgements of this first judge module;
User's band information acquisition module 703, in first when the determination result is NO of this first judge module 701, carries out alternately, obtaining the UB information that idle UB is corresponding with Unicable equipment; During concrete enforcement, this user's band information acquisition module 703 comprises:
Center frequency point request unit, for to center frequency point corresponding to all free subscriber frequency bands of single cable machinery request;
Center frequency point selected cell, selects an effective center frequency point for center frequency point corresponding to user's frequency band from available free;
User is reel number request unit frequently, for according to the selected effective center frequency point of described selected cell, and the user of mating with this center frequency point to single cable machinery request frequency reel number.
The second installation module 704, for according to UB information corresponding to mutual the obtained idle UB of user's band information acquisition module and Unicable equipment, carries out the UB installation of this receiver.
Referring to Fig. 7, while specifically implementing, the first judge module 701 of the Digital Television satellite receiver of the present embodiment comprises:
Local information is obtained submodule 801, for obtain UB information corresponding to UB of using when this receiver is last to be installed from receiver memory module;
Judgement submodule 802, for obtain UB information corresponding to UB that last time that submodule 801 obtains used while installing according to this local information, carry out alternately with Unicable equipment, whether the UB using while judging the last installation of this receiver is idle, obtains the first judged result.
Referring to Fig. 8, while specifically implementing, in the present embodiment, the judgement submodule 802 of this receiver comprises:
Whether effective detecting unit 901, obtain for detection of local information the UB information that UB that last time that submodule 801 obtains from memory module used while installing is corresponding, obtains testing result;
Idle determination unit 902, while being effective for the testing result at this detecting unit 901, carries out alternately with Uincable equipment, and whether the UB using while judging the last installation of receiver is idle, obtains the first judged result;
When user's band information acquisition module 703 is also invalid for the testing result at this detecting unit 901, carry out alternately, obtaining the UB information that idle UB is corresponding with Unicable equipment.
Referring to Fig. 9, it is the functional block diagram of the embodiment bis-of Digital Television satellite reception of the present invention.The Digital Television satellite receiver of the embodiment of the present invention comprises the memory module identical with receiver shown in Fig. 7 700, the first judge module 701, the first installation module 702, user's band information acquisition module 703 and the second installation module 704, and the receiver of the present embodiment also comprises:
Vacation takies judge module 705, in first when the determination result is NO of the first judge module, carries out alternately with Unicable equipment, and whether the UB that judgement is last to be used while installing is that vacation takies, and obtains the second judged result;
Seize module 706, for take second of judge module 705 in vacation, judgment result is that while being, seize this UB;
User's band information acquisition module 703 in the present embodiment also, for take second when the determination result is NO of judge module 705 in vacation, carries out alternately, obtaining the UB information that idle UB is corresponding with Unicable equipment.
Referring to Figure 10, it is the functional block diagram of the embodiment tri-of Digital Television satellite receiver of the present invention.The receiver of the present embodiment comprises that the memory module identical with receiver shown in Fig. 7 700, the first judge module 701, the first installation module 702, user's band information acquisition module 703, the second installation module 704, vacation take module 705 and seize module 706, and the receiver of the present embodiment also comprises:
The 3rd installation module 707, when the UB that carries out this receiver for UB information corresponding to idle UB of obtaining according to user's band information acquisition module 703 at the second installation module 704 installs unsuccessfully, travels through all UB, and the UB that carries out this receiver installs.During concrete enforcement, the 3rd installation module 707 comprises:
Request submodule, when the UB that carries out this receiver for UB information corresponding to idle UB of obtaining according to user's band information acquisition module 703 at the second installation module 704 installs unsuccessfully, directly to UB of Unicable device request;
The 3rd judgement submodule, for mutual with Unicable equipment, whether user's frequency band that judgement request submodule is asked is idle, obtains the 3rd judged result;
First installs submodule, for obtain the 3rd when the 3rd judgement submodule, judgment result is that while being, directly according to the UB that asks submodule to be asked, carries out the installation of the UB of this receiver;
Second installs submodule, for judging when obtaining the 3rd by submodule the determination result is NO when the 3rd, directly to the next UB of Unicable device request, and judge that whether it is idle, if this next one UB is idle, according to this next one UB, carry out the UB installation of this receiver, if this next one UB is not idle, to ODU, ask next UB again, until find idle user's frequency band or traveled through all UB.
In another specific embodiment, the Digital Television satellite receiver of the embodiment of the present invention has also comprised the modules in above-described embodiment, the vacation that different is in the embodiment of the present invention takies judge module also for when the 3rd when the determination result is NO of the 3rd installation module 707, carry out alternately with single cable machinery, whether user's frequency band that judgement is asked is that vacation takies, and obtains the 4th judged result;
Seize module, also, for judgment result is that while being when false the 4th of the judge module that takies, seize this user's frequency band;
Second installs submodule also for when the 4th when the determination result is NO, directly to the next user's frequency band of single cable machinery request, and judge with single cable machinery that alternately whether next user's frequency band is idle, if next user's frequency band is idle, according to this next one user frequency band, carry out the installation of user's frequency band of this receiver, if next user's frequency band is not idle, carry out alternately with single cable machinery, judge whether next user's frequency band is that vacation takies, if being vacation, next user's frequency band takies, seize next user's frequency band, if not being vacation, next user's frequency band do not take, to single cable machinery request next user's frequency band again, until find idle user's frequency band.
Referring to Figure 11, it is the functional block diagram of the embodiment tetra-of Digital Television satellite receiver of the present invention.The receiver of the present embodiment comprises the first judge module 701, the first installation module 702, user's band information acquisition module 703 and the second installation module 704 same with the above-mentioned embodiment, and the receiver of the present embodiment also comprises:
Control module 708, the UB using while being used for once installing in the first installation module 701 bases carries out after the UB successful installation of this receiver, or second installation module 704 according to UB information corresponding to idle UB of obtaining, carry out after the UB successful installation of this receiver, to Unicable equipment, send zapping command request;
Collision detection module 709, for sending after zapping command request to Unicable equipment in control module 708, carries out alternately with Unicable equipment, detects whether zapping command collision occurs;
Retransmit module 710, while there is zapping command collision for detecting in collision detection module 709, sends zapping command request to Unicable equipment again.
Above disclosed is only preferred embodiment of the present invention, certainly can not limit with this interest field of the present invention, one of ordinary skill in the art will appreciate that all or part of flow process that realizes above-described embodiment, and the equivalent variations of doing according to the claims in the present invention, still belong to the scope that invention is contained.
Claims (14)
1. Digital Television satellite receiver is installed a method for user's frequency band, it is characterized in that, comprising:
Carry out alternately with single cable machinery, whether the user's frequency band using while judging the last installation of this receiver is idle, obtains the first judged result,
Judgment result is that while being when described first, the user's frequency band using while installing according to this last time carries out user's frequency band of this receiver and installs;
When described first when the determination result is NO, carry out alternately, obtaining user's band information that free subscriber frequency band is corresponding with single cable machinery;
According to user's band information corresponding to described free subscriber frequency band, carrying out user's frequency band of this receiver installs;
Described and single cable machinery carries out alternately, and whether the user's frequency band using while judging the last installation of this receiver is idle, and the step that obtains the first judged result comprises:
The corresponding user's band information of user's frequency band that the last time of obtaining this receiver from the local storage of this receiver is used while installing, this user's band information comprise user frequently reel number and with this user center frequency point that reel number mates frequently;
The corresponding user's band information of user's frequency band using during according to described last installation, carries out alternately with single cable machinery, and whether the user's frequency band using while judging the last installation of this receiver is idle, obtains the first judged result;
When described first when the determination result is NO, to carry out alternately with single cable machinery, the step of obtaining user's band information that free subscriber frequency band is corresponding comprises:
Carry out alternately with described single cable machinery, whether the user's frequency band using while judging the last installation of this receiver is that vacation takies, and obtains the second judged result,
Judgment result is that while being when described second, seize described user's frequency band;
When described second when the determination result is NO, carry out alternately, obtaining user's band information that free subscriber frequency band is corresponding with single cable machinery.
2. the method for claim 1, it is characterized in that, the described corresponding user's band information of user's frequency band using during according to described last installation, carry out alternately with single cable machinery, whether the user's frequency band using while judging the last installation of this receiver is idle, and the step that obtains the first judged result comprises:
Whether the corresponding user's band information of user's frequency band using while detecting described last installation is effective, obtains testing result,
When described testing result is while being effective, carry out alternately with single cable machinery, whether the user's frequency band using when judging that this receiver is last and installing is idle, obtains the first judged result;
When described testing result is while being invalid, carry out alternately, obtaining user's band information that free subscriber frequency band is corresponding with single cable machinery.
3. the method as described in any one in claim 1 to 2, is characterized in that, described and single cable machinery carries out alternately, obtaining the step of user's band information that free subscriber frequency band is corresponding, specifically comprises:
To center frequency point corresponding to all free subscriber frequency bands of described single cable machinery request;
From center frequency point corresponding to all free subscriber frequency bands, select an effective center frequency point;
According to described effective center frequency point, the user of mating with described effective center frequency point to described single cable machinery request is reel number frequently.
4. method as claimed in claim 3, is characterized in that, also comprises:
When carrying out user's frequency band of this receiver according to user's band information corresponding to described free subscriber frequency band while installing unsuccessfully, directly travel through all user's frequency bands, carry out user's frequency band of this receiver and install.
5. method as claimed in claim 4, is characterized in that, user's frequency band that described direct traversal is all, and the step of carrying out user's frequency band installation of this receiver, comprising:
Directly to user's frequency band of single cable machinery request;
Whether user's frequency band that judgement is asked is idle, obtains the 3rd judged result,
Judgment result is that while being when the described the 3rd, according to asked user's frequency band, carry out the installation of user's frequency band of this receiver;
When the described the 3rd when the determination result is NO, directly to the next user's frequency band of described single cable machinery request, and judge with single cable machinery that alternately whether described next user's frequency band is idle, if described next user's frequency band is idle, according to this next one user frequency band, carry out the installation of user's frequency band of this receiver, if described next user's frequency band is not idle, to single cable machinery request next user's frequency band again, until find idle user's frequency band.
6. method as claimed in claim 5, it is characterized in that, described when the described the 3rd when the determination result is NO, directly to the next user's frequency band of described single cable machinery request, and judge with single cable machinery that alternately whether described next user's frequency band is idle, if described next user's frequency band is idle, according to this next one user frequency band, carry out the installation of user's frequency band of this receiver, if described next user's frequency band is not idle, to single cable machinery request next user's frequency band again, until find the step of idle user's frequency band, specifically comprise:
Carry out alternately with described single cable machinery, whether user's frequency band that judgement is asked is that vacation takies, and obtains the 4th judged result,
Judgment result is that while being when the described the 4th, seize described user's frequency band;
When the described the 4th when the determination result is NO, directly to the next user's frequency band of described single cable machinery request, and judge with single cable machinery that alternately whether described next user's frequency band is idle, if described next user's frequency band is idle, according to this next one user frequency band, carry out the installation of user's frequency band of this receiver, if described next user's frequency band is not idle, carry out alternately with described single cable machinery, judge whether described next user's frequency band is that vacation takies, if described next user's frequency band is that vacation takies, seize described next user's frequency band, if not being vacation, described next user's frequency band do not take, to single cable machinery request next user's frequency band again, until find idle user's frequency band.
7. method as claimed in claim 4, is characterized in that, also comprises:
The user's frequency band using when installing according to this last time carries out after user's frequency band successful installation of this receiver, or when carrying out according to user's band information corresponding to described free subscriber frequency band after user's frequency band successful installation of this receiver, to described single cable machinery, send zapping request command
Carry out alternately, judging whether to occur the conflict of zapping request command with described single cable machinery, if resend described zapping request command.
8. a Digital Television satellite receiver, is characterized in that, comprising:
The first judge module, for carrying out alternately with single cable machinery, whether the user's frequency band using while judging the last installation of this receiver is idle, obtains the first judged result;
The first installation module, for judgment result is that while being described first, the user's frequency band using while installing according to this last time carries out user's frequency band of this receiver and installs;
User's band information acquisition module, for, carrying out alternately, obtaining user's band information that free subscriber frequency band is corresponding with single cable machinery when the determination result is NO described first;
The second installation module, carries out user's frequency band of this receiver and installs for user's band information corresponding to free subscriber frequency band obtaining according to described user's band information acquisition module;
Memory module, for storing user's band information corresponding to user's frequency band using when this receiver is last to be installed, described user's band information comprises user's reel number frequently, and the center frequency point of mating with this user's frequency reel number;
Vacation takies judge module, in first when the determination result is NO of described the first judge module, carries out alternately with single cable machinery, and whether user's frequency band that judgement is last to be used while installing is that vacation takies, and obtains the second judged result;
Seize module, for take second of judge module when described vacation, judgment result is that while being, seize this user's frequency band;
Described user's band information acquisition module also, for take second when the determination result is NO of judge module when described vacation, carries out alternately, obtaining user's band information that free subscriber frequency band is corresponding with single cable machinery;
Described the first judge module comprises:
Local information is obtained submodule, for obtain the corresponding user's band information of user's frequency band using when this receiver is last to be installed from described memory module;
Judgement submodule, for obtain the corresponding user's band information of user's frequency band that last time that submodule obtains used while installing according to described local information, carry out alternately with single cable machinery, whether the user's frequency band using while judging the last installation of this receiver is idle, obtains the first judged result.
9. Digital Television satellite receiver as claimed in claim 8, is characterized in that,
Described judgement submodule comprises:
Whether effective detecting unit, obtain for detection of described local information user's band information that user's frequency band that last time that submodule obtains from described memory module used while installing is corresponding, obtains testing result;
Idle determination unit, while being effective for the testing result at described detecting unit, carries out alternately with single cable machinery, and whether the user's frequency band using while judging the last installation of this receiver is idle, obtains the first judged result;
When user's band information acquisition module is also invalid for the testing result at described detecting unit, carry out alternately, obtaining user's band information that free subscriber frequency band is corresponding with single cable machinery.
10. the Digital Television satellite receiver as described in any one in claim 8 to 9, is characterized in that, described user's band information acquisition module comprises:
Center frequency point request unit, for to center frequency point corresponding to all free subscriber frequency bands of single cable machinery request;
Center frequency point selected cell, selects an effective center frequency point for center frequency point corresponding to user's frequency band from available free;
User is reel number request unit frequently, for according to the selected effective center frequency point of described center frequency point selected cell, and the user of mating with this center frequency point to single cable machinery request frequency reel number.
11. Digital Television satellite receiver as described in any one in claim 8 to 9, is characterized in that, also comprise:
The 3rd installation module, when the user's frequency band that carries out this receiver for user's band information corresponding to free subscriber frequency band that obtain according to user's band information acquisition module at described the second installation module is installed unsuccessfully, directly all user's frequency bands of traversal, carry out user's frequency band of this receiver and install.
12. Digital Television satellite receiver as claimed in claim 11, is characterized in that, described the 3rd installation module comprises:
Request submodule, when the user's frequency band that carries out this receiver for user's band information corresponding to free subscriber frequency band that obtain according to user's band information acquisition module at described the second installation module is installed unsuccessfully, directly to user's frequency band of single cable machinery request;
The 3rd judgement submodule, whether idle for judging user's frequency band that described request submodule asks, obtain the 3rd judged result;
First installs submodule, for obtain the 3rd when described the 3rd judgement submodule, judgment result is that while being, direct user's frequency band of asking according to described request submodule carries out the installation of user's frequency band of this receiver;
Second installs submodule, for judging when obtaining the 3rd by submodule the determination result is NO when the described the 3rd, directly to the next user's frequency band of single cable machinery request, and judge that whether it is idle, if described next user's frequency band is idle, according to this next one user frequency band, carry out the installation of user's frequency band of this receiver, if described next user's frequency band is not idle, to single cable machinery request next user's frequency band again, until find idle user's frequency band.
13. Digital Television satellite receiver as claimed in claim 12, is characterized in that,
Described vacation takies judge module also in the 3rd when the determination result is NO of described the 3rd judgement submodule, carries out alternately with single cable machinery, judges whether user's frequency band of asking is that vacation takies, and obtains the 4th judged result;
The described module of seizing, judgment result is that while being for take the 4th of judge module when described vacation, seizes this user's frequency band;
Described second installs submodule, also for when the 4th when the determination result is NO, directly to the next user's frequency band of described single cable machinery request, and judge with single cable machinery that alternately whether described next user's frequency band is idle, if described next user's frequency band is idle, according to this next one user frequency band, carry out the installation of user's frequency band of this receiver, if described next user's frequency band is not idle, carry out alternately with described single cable machinery, judge whether described next user's frequency band is that vacation takies, if described next user's frequency band is that vacation takies, seize described next user's frequency band, if not being vacation, described next user's frequency band do not take, to single cable machinery request next user's frequency band again, until find idle user's frequency band.
14. receivers as described in any one in claim 8 to 9, is characterized in that, also comprise:
Control module, the user's frequency band using while being used for once installing in described the first installation module basis carries out after user's frequency band successful installation of this receiver, or described the second installation module carries out after user's frequency band successful installation of this receiver according to user's band information corresponding to free subscriber frequency band that obtain, to single cable machinery, send zapping command request;
Collision detection module, for sending after zapping command request to single cable machinery in described control module, carries out alternately with single cable machinery, detects whether zapping command collision occurs;
Retransmit module, while there is zapping command collision for detecting in described collision detection module, sends zapping command request to single cable machinery again.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201110370514.2A CN102510460B (en) | 2011-11-21 | 2011-11-21 | Digital television satellite receiver and user band (UB) installation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201110370514.2A CN102510460B (en) | 2011-11-21 | 2011-11-21 | Digital television satellite receiver and user band (UB) installation method thereof |
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| CN102510460A CN102510460A (en) | 2012-06-20 |
| CN102510460B true CN102510460B (en) | 2014-11-26 |
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| CN104363432B (en) * | 2014-10-29 | 2017-10-13 | 珠海市肯普电子科技有限公司 | A kind of single cable combination switch system |
| CN111741296A (en) * | 2020-07-03 | 2020-10-02 | 珠海迈科智能科技股份有限公司 | Method for detecting video channel frequency of Unicable tuner and set top box |
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| FR2835368A1 (en) * | 2002-01-29 | 2003-08-01 | St Microelectronics Sa | TRANSMISSION OF SIGNALS ON A COAXIAL CABLE |
| WO2006120203A2 (en) * | 2005-05-09 | 2006-11-16 | Unitron | Priority switch for solving collision problems with signalling on a bus |
| CN101345574B (en) * | 2008-08-22 | 2010-08-11 | 北京航空航天大学 | Carrier channel selection method in MF-TDMA satellite system |
| FR2936920B1 (en) * | 2008-10-06 | 2016-01-15 | Eutelsat | INSTALLATION FOR RECEIVING SATELLITE HYPERFREQUENCY SIGNALS. |
| DE202008015500U1 (en) * | 2008-11-21 | 2009-02-12 | Christian Schwaiger Gmbh | Satellite reception and distribution system as headend with programmable transponder conversion of transponder blocks |
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