CN1092927A - Interior formula satellite broadcast tuner of machine and the community receiving system that uses it - Google Patents
Interior formula satellite broadcast tuner of machine and the community receiving system that uses it Download PDFInfo
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- CN1092927A CN1092927A CN 93121696 CN93121696A CN1092927A CN 1092927 A CN1092927 A CN 1092927A CN 93121696 CN93121696 CN 93121696 CN 93121696 A CN93121696 A CN 93121696A CN 1092927 A CN1092927 A CN 1092927A
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Abstract
A kind of satellite broadcasting tuner is contained on the circuit board, is used for same standard TV receiver and is connected.This satellite broadcast tuner comprises frequency band selection and demodulator circuit, a video separation and treatment circuit, and a sound separates and demodulator circuit, a control signal generation circuit and the signal selecting switch that connects a standard TV receiver easily.Therefore become the whole part of this standard TV receiver, be used for going to select one with reference to a TV signal and a satellite broadcast signal according to a TV control signal.Thus, the present invention can under the equitable price condition easily be installed in the television set compactly.
Description
The application with reference to and admit under 35U.S.C. § 119 conditions owing to number be the application of NO 92-23663 in Korea S's industry and trademark office at the transfer of first to file and all benefits of causing for the application of 93-3107 of the transfer of applying in this innings on March 3rd, 1993 number on December 9th, 1992.
The present invention relates to a kind of satellite broadcast receiver, interior formula satellite broadcast tuner of particularly a kind of machine and the community receiving system that uses it, it can be installed in the receiver of a standard.
At present, it is in vogue that family expenses satellite broadcasting receives, and almost increasing as the drama, and usually, this equipment comprises a paraboloidal antenna, a satellite broadcasting converter and a satellite broadcast tuner.It is outdoor that this parabolic antenna and this satellite broadcasting converter are installed in, and that this satellite broadcast tuner is installed in is indoor.Afterwards, satellite broadcasting converter and satellite broadcast tuner are connected to each other by coaxial cable.Usually this satellite broadcast tuner externally is installed to this television set (this method is called as a kind of RF method of attachment) by the RF cable, perhaps connects (this method is called as a kind of AV method of attachment) by the audio frequency and video line.
For the RF method of attachment, satellite channel is tuning in satellite broadcast tuner, thereby finishes frequency inverted.Detect this afterwards by the Voice ﹠ Video signal of tuning satellite channel.Then, detected Voice ﹠ Video signal carries out frequency inverted once more, and for use in connecting television set, afterwards, the audio/video signal of this frequency converter is added to this television set.This television set detects the Voice ﹠ Video information of the RF signal that receives once more, so that the final image that produces band sound.Therefore, owing in this satellite broadcast tuner and television set, repeatedly handle the modulation and demodulation signal, make that the mass ratio of final pictures and sounds is relatively poor.
For the AV method of attachment, signal quality is poor unlike the RF method of attachment.But this method is limited in the television set with AV link and uses.Yet, because satellite broadcast tuner and the common use of television set will be inconvenient so the user uses this additional controller respectively by a plurality of remote controllers that separate of user's control.
As mentioned above, because the structure of conventional satellite broadcasting tuner should be held above-mentioned two kinds of methods of attachment, and comprise that the controller of opening in a minute appends to this television set, so equipment price is high.Equally, in order to be connected with common TV, this conventional satellite broadcasting tuner has been used as the outside tuner of installing and provides.
By TadashiKurita etc. at US-5,251, " satellite broadcast tuner " discussed in 010 provides and is similar to above-mentioned a kind of satellite broadcast tuner, and wherein, a switch elements is used to receive video or the audio signal from respective handling unit or descrambling unit.One CPU is controlled by a long distance commanding or by a plurality of knobs on the broadcasting tuner, so that control this switch element selectively, to export from the video of this processing unit or this descrambling unit or a signal in the audio signal.This selected signal outputs to a televimonitor.This long distance commanding is used for controlling this satellite broadcast tuner specially, and this satellite broadcast tuner is separated with televimonitor.This satellite broadcast tuner with CPU is very expensive except that some registers.
On the other hand, introduced a kind of television receiver with satellite broadcast receiver of installing in inside.At US-5, the color television set of " the having the satellite broadcast receiver of installing in inside " of discussing in 166,798 provides a kind of like this satellite broadcast receiver of installing in inside by Seong J.cho.But the color television set that gives the cho of system has comprised a satellite broadcast tuner that improves this technicolo receiver price.Therefore, if the people of a satellite broadcast receiver that has had the accurate colored TV receiver of a station symbol and adorned in not having thinks receiving satellite broadcast, then he just should buy new a colored TV receiver or an independent satellite broadcast tuner as the cho design.
By Harold Blatter etc. at US-4,667, disclosed in 243 " television receiver that is used for the direct broadcasting satellite signal " discussed a kind of direct broadcasting satellite (DBS) television receiver, it has the attachment plug with many Connection Elements or lead-in wire, and a direct broadcasting satellite receives and inserts, the unit is connected to these Connection Elements or lead-in wire.This DBS inserts the unit and is equipped with a multiplexer, is used for providing the video and audio signal that receives from television receiver by attachment plug selectively, or the video and audio signal that inserts the frequency discriminator reception of unit from DBS is provided.This multiplexer is controlled by a mode select signal, and this mode select signal is produced by a selector switch on the connection television receiver and is added to this multiplexer by attachment plug.Selected video and audio signal utilizes the attachment plug input television receiver of being handled by sound and video signal processing unit in the television receiver.
Therefore, for the problems referred to above of deblocking, the purpose of this invention is to provide a kind of satellite broadcasting tuner that is installed to the miniaturization in the standard TV receiver easily.
Another object of the present invention provides a kind of satellite broadcast tuner equipment that can use the control of standard TV receiver remote manipulator.
A further object of the present invention provides a kind of satellite broadcast tuner equipment of spending few.
A further object of the present invention provides a kind of satellite broadcasting community receiving system of economy.
For achieving the above object by the principle of the invention, formula satellite broadcasting tuner in a kind of machine that is used in the satellite broadcasting receiving equipment is provided here, it offers standard television broadcasting receiver satellite radio television signal, and formula satellite broadcast tuner equipment entirely comprises in this machine:
Be used for selecting and the TV signal of demodulation one predetermined channel and export the device of a baseband signal from the first intermediate-freuqncy signal mid band of the satellite broadcasting by outdoor satellite broadcasting receiving antenna, transducer and cable connector input;
Be used for separating and exporting the device of a vision signal from this baseband signal;
Be used for separating one pair of carrier signal and paying the demodulation of ripple signal and exporting the device of an audio signal from this separation from this base band item;
Control signal generator means is used to produce a receiving mode and selects signal, and it is selected between a standard television broadcast mode and a satellite broadcasting pattern according to a mode select signal that is provided by the standard television broadcasting receiver; And
Signal selecting, the vision signal of the separation that will provide by receiver and the video amplifier circuit that the standard television vision signal is added to this receiver selectively, simultaneously, demodulated audio signal that will provide by receiver and the standard television audio signal audio output circuit that is added to this receiver selectively, select signal according to this receiving mode, this satellite broadcast tuner equipment is mounted in this receiver.
The present invention also provides a kind of satellite broadcasting community receiving system that comprises a satellite broadcasting receiving antenna;
At least one is installed in the transducer of the accumulation point of this satellite broadcasting receiving antenna, the satellite broadcast signal that receives is transformed into one first midband signal, so that export the signal that this is converted; One front end be used to receive each first midband signal of providing from least one transducer and from a standard broadcasting reception antenna provide-the RF signal, and the signal that this receives is provided to many cable tv networks; And
Many television receivers, all have formula satellite broadcast tuner in the machine, be used for mode select signal according to TV/SAT, export the video and audio signal of the satellite television broadcasting of selecting from the first midband signal selectively, and the video and audio signal of this standard television broadcasting of selecting from the RF signal of output.
Better with reference to understanding from describing in detail down, more fully estimate the present invention when in conjunction with the accompanying drawings, many additional advantages of the present invention will be conspicuous, and same numeral is represented identical or similar element in the accompanying drawing:
Fig. 1 is the view of conventional satellite broadcasting accepting device;
Fig. 2 is the syndeton view between expression conventional satellite apparatus for receiving broadcasting and the general TV receiver;
Fig. 3 is the syndeton view between an expression conventional satellite apparatus for receiving broadcasting and the AV television receiver;
Fig. 4 is the system view of a kind of common community receiving system of expression;
Fig. 5 is the calcspar by a kind of satellite tuner of principle of the invention formation:
Fig. 6 is the circuit diagram by the most preferred embodiment of a kind of satellite tuner of principle of the invention formation; And
Fig. 7 is the system view by a kind of community receiving system of principle of the invention formation.
Describe a most preferred embodiment of the present invention in detail hereinafter with reference to accompanying drawing.
With reference to Fig. 1, a kind of common satellite broadcasting receiving equipment of externally installing comprises 10, one satellite broadcasting converters 12 of a parabolic antenna, and a satellite broadcast tuner 14.The electromagnetic wave polished object shape antenna 10 that is provided by a broadcasting satellite reflects, and is collected in the satellite broadcasting converter 12, and this transducer is placed on the focus point of this antenna.Satellite broadcasting converter 12 will convert line polarization wave at the circularly polarised ripple that first reflector 16 is collected.The line polarization wave of conversion is put 18 before by 12GHZ and is amplified, and the 12GHZ signal of its output and the 10.678GHZ signal of local oscillator 20 carry out mixing in frequency mixer 22, convert the 1GHZ signal to.The 1GHZ signal that this frequency is converted is called first intermediate-freuqncy signal (BF-IF).This BF-IF signal amplifies and output by one first intermediate frequency amplifier 24.Satellite broadcasting converter 12 is connected to satellite broadcast tuner 14 by cable 28, also by the DC driving voltage that is subjected to from voltage source 26, so that provide necessary various dc voltages to each element and the cable 28 of first intermediate frequency amplifier 24.Satellite broadcasting converter 12 is installed on the focus of parabolic antenna 10, and the both is installed in outdoor.
In tuner and demodulator circuit 30, first intermediate-freuqncy signal is amplified in amplifier 46, and the signal that is exaggerated is with oscillator signal mixing in frequency mixer 50 of local oscillator 48.Afterwards, desired channel signals is converted into second intermediate-freuqncy signal of 130MHZ or 400MHZ.Second intermediate-freuqncy signal that is converted is amplified in second intermediate frequency amplifier 52, and has only the 27MHZ signal to be added to FM demodulator 54, so that export a FM-demodulated baseband signal.
When so a kind of conventional satellite broadcasting tuner 14 is connected to as shown in Figure 2 general television set 60, the RF output of general television broadcasting signal will adopt 3-channel or 4-channel UV frequency mixer 62 to be connected with feeder.Mixed frequency signal is connected to this television antenna input by UV wavelength-division orchestration 64.Equally, as shown in Figure 3, when being connected to an AV television set, the Voice ﹠ Video output of satellite broadcast tuner 14 is connected to the Voice ﹠ Video input of AV TV 70 separately.
As mentioned above, when the satellite broadcast tuner of common outdoor mounted was connected to general television receiver 60, if compare with terrestrial broadcasting, the user can observe a kind of image, can eliminate folded shape in this image.Since with resemble with voice signal by frequent transitions, send to then in the television receiver again by demodulation, the user can not appreciate and watch high-quality Voice ﹠ Video information, and characteristics of Here it is satellite broadcasting.Equally, when being connected to the AV/TV receiver, might enjoy high-quality pictures and sounds.
But as shown in Figure 3, because satellite broadcast tuner separates with television receiver, they need divide switch power supply and controller.Equally, it will be unusual inconvenient controlling the satellite broadcast tuner and the television receiver that separate independently with remote manipulator separately, and therefore, equipment price height, installing space are also big significantly.
With reference to Fig. 4, conventional satellite broadcasting community receiving system receives first intermediate-freuqncy signal of 1GHZ, its reception antenna reception via satellite and down-conversion.This common community receiving system is divided into channel signals 1-n to input signal by separator 200, and exports signal separately respectively.Afterwards, the channel signals that separates separately passes through the receiver 210 of corresponding each channel by demodulation.Be carried out modulation by the frequency range of the signal of demodulation by modulator 220 usefulness standard television channels or CATV channel separately, so that be added to the TV end separately.Here, the signal of this modulation amplifies by amplifier 230, so that be added to input 240.On the other hand, standard television signal receives by ground-plane antenna, and amplifies by TV signal amplifier 250, also is added to input 240, and in input 240, each inputting channel signal is added to the cable tv network.The general television set that is connected to each node 260 of cable tv network receives the TV signal of a standard.
In this common community receiving system, because many receivers of respective satellite broadcasting channel, modulator and amplifier are used to receiving satellite broadcast, and the satellite relay transmitter section of community receiving system is very complicated, therefore, and the product price height.
In order to solve the above-mentioned defective of conventional satellite broadcasting tuner, the invention provides a kind of satellite broadcast tuner, it can be installed in the machine of a television receiver, thereby the observer can enjoy high-quality pictures and sounds output, and no matter the television receiver type, and do not need big installing space, thereby reduced price.The present invention also controls satellite broadcast tuner by means of the transmitter that allows far distance controlled to be used for this television receiver, and be reduced in the existing television receiver and in inside the method for satellite broadcast tuner be installed and make things convenient for the user, this existing television receiver can not receiving satellite broadcast.
With reference to Fig. 5, mainly comprise a tuner and 110, one audio frequency separators of demodulator circuit 100, one video separation circuit and demodulator circuit 120 by satellite broadcast tuner of the present invention, a control signal oscillator 130, and a signal selector 140 on institute's printed circuit board.In addition, be feature by satellite broadcast tuner of the present invention to be installed in a standard TV receiver inside.
Tuner and demodulator circuit 100 are to be connected to by coaxial cable connector 112 to be contained in outdoor satellite broadcasting converter 12.Afterwards, tuner and demodulator circuit 100 receive first intermediate frequency of 1GHZ, so that select a channel signals that requires, and selected second intermediate-freuqncy signal of FM-demodulation, so that export a wide band baseband signal.
Video separator and demodulator circuit 120 receive and amplify baseband signal, and only the logical filtering 5.73MHZ audio frequency of band is paid carrier signal, pays carrier wave so that separate this audio frequency.Afterwards, the audio frequency of this separation is paid and is carried by signal by 4 phase difference offset keying demodulation, the PCM decoding, and by the D/A conversion, to export an audio signal.
DC power source apparatus 160 receives for example dc voltage of 18-19V from television receiver, and according to horizontal or vertical polarity (VH) be provided with select signal-selectivity ground to apply 13V for example or 18V dc voltage as a dc voltage, this voltage is added to satellite broadcasting converter 12 by selection and demodulator circuit 100.Have the situation of horizontal polarization for this satellite broadcasting converter, this voltage that applies is 13V, and has the situation of perpendicular polarization for this satellite broadcasting converter, and this voltage that applies is 18V.Here, for the situation that has horizontal polarization at satellite broadcasting converter, the VH signalization is logic " height " signal.Promptly the signal from television receiver+5V is added to T
2End, and have the situation of vertical polarization for satellite broadcasting converter, a logic " low " signal, for example OV or earth potential are added to T
2End.This polarity or can be provided with when satellite broadcast tuner PCB is installed in the standard TV receiver perhaps can be used tuning voltage, and polarity is selected to depend on and selected the channel that is used to observe.In addition, some television receiver depends on the receiver use occasion, has had the ability of using tuning voltage to select between level and vertical polarization.For example at the U.S. Pat .4 of such as the title that belongs to Edwin T.Horton etc., the use of level and vertical polarization has been discussed in 761,827 for " polarity switch that is used for television receiver ".
Other label T
1And T
3-T
uThe link of the terminal jockey T of representative between satellite broadcast tuner of the present invention and TV set circuit.End points T
2Connection is from the 12V dc voltage of television receiver, so that provide operating voltage to the various integrated electric device of satellite broadcast tuner PBC.End points T
3The voltage source of the 18-19V of television receiver is connected to DC power source apparatus 160.End points T
4To be connected to an input of switch 142 by the vision signal that standard TV receiver produces, the output of switch 142 is by end points T simultaneously
5From providing the vision signal of television receiver, or provide vision signal output, be used for the display video image to television receiver video processor 110.End points T
6To be connected to an input of switch 144 by the audio signal that standard TV receiver produces, the output of switch 144 passes through T
7End or be provided to television receiver with the television receiver audio signal or with the audio signal output of audio process 120 provides the usefulness of sound for the corresponding video image that shows.T
8End response selects to be connected to the audio/video mode signal that produces at television receiver or the audio frequency and video knob that is used on the television receiver remote control in television receiver.On the other hand, T
8End response is connected to a tone squelch signal that produces in the television receiver in the selection that television receiver or the selection that is used for a tone squelch knob on the television receiver remote control are connected to a tone squelch knob that produces in the television receiver.T
9End is connected to switch 152(multiplexer with the AFC on signal of television receiver) a control end.T
10End is connected to tuning selection supply unit 154 with the tuning voltage Vtunning that television receiver produces.And T
11End is used for providing earth potential to the integrated circuit that forms satellite broadcast tuner PBC.
Fig. 6 represents the most preferred embodiment by an inner satellite broadcast tuner of installing of the present invention.Video separator circuit 110 comprises transistor Q
1-Q
9, limit frequency surpasses the low pass filter LPF of 4.5MHE, and a lot of resistance and electric capacity.The video separator circuit receives a baseband signal BB, and exports a vision signal.
Audio frequency separator and demodulator circuit 120 comprise a transistor Q
10, pay the band pass filter BPF of carrier signal, an audio demodulator integrated circuit U by an audio frequency for one
1(for example TBA120S), and various resistance and capacitor.
Audio frequency separator and demodulator circuit 120 receiving baseband signal BB export an audio frequency and pay and carry a signal, and the audio frequency of this separation of demodulation pays carrier signal, export an audio signal.
Control-signals generator 130 is by d type flip flop U
3Clock end receive the TV/AV mode select signal of television receiver.As a result, during receiving television broadcasting, when importing this AV pattern by the TV/AV options button and be selected to the TV pattern, d type flip flop U
3Q be output as high level, thus, allow each switching device 142 and 142 of signal selecting 140 select the Voice ﹠ Video signal of satellite broadcastings, to form switch control.Here, because receiver is pressed the AV model selection, if TV/AV options button signal is imported once more, so that pattern changes to the TV pattern by the AV pattern, then receiving mode is set for satellite broadcasting.
On the other hand, when selecting in the satellite broadcasting accepting state on the TV pattern to select the AV pattern twice, signal selecting 140 is controlled to be provided with receiving mode and is used for standard television broadcasting.Be d type flip flop U
3The signal that removes this reception of receiving TV/AV options button signal and using in its clock termination.Therefore, the TV/AV options button is selected twice at any time, and the SAT pattern can be pressed the AV pattern, the TV pattern, and the AV pattern is that the SAT mode sequence is selected then.
Like this,, or depress the TV/AV options button that is placed among the TV remote BB for twice, can select the satellite broadcasting pattern by means of the AV switch of depressing existing television set continuously.When it is not an AV television set, can use the tone squelch switch or the tone squelch key of TV remote controller.Therefore, the SAT pattern can be by quiet mode, the audio frequency output mode, and quiet mode is that the SAT mode sequence is selected then.
Therefore, when use is of the present invention, as long as signal if necessary is connected to console panel of the present invention and does not need to change existing television receiver system, satellite broadcasting receiving function then, for example satellite broadcasting model selection, channel selection, AFC function etc. can be controlled on television set itself by means of the remote controller of the existing television set of operation.Therefore, the present invention is easily mounted in the existing television set, and the user operation is very easy.
Continuous-current plant 160 comprises transistor Q
12And Q
13, here, continuous-current plant 160 receives a direct current voltage from television receiver, and is provided with optionally or provides 13V or 18V is provided level by the VH that television set provides.When the VH signalization is low level, transistor Q
13End, therefore, provide 18V voltage, and when the VH signalization is high level, transistor Q
13Therefore conducting provides 13V voltage.Here, the VH signalization is selected horizontal polarization key or vertical polarization ripple according to the satellite broadcasting that receives.
With reference to Fig. 7, adopt satellite broadcasting community receiving system of the present invention partly to constitute with broadcasting-satellite transponder simply.When promptly the television set of satellite broadcast tuner of the present invention being installed when portion within it was used, channel can directly be selected by television set.Therefore needn't be by channel repeater satellite broadcasting separately.Like this, satellite broadcasting is transmitted part and will be gone to disappear, and uses a simple wide-band amplifier and replace.Therefore simplified the structure of community receiving system and saved expense.
As mentioned above, in satellite broadcast tuner, eliminated power supply for the television set redundancy, the RF transducer of controller and this satellite broadcast tuner, thereby reduced the space of occupying of conventional equipment, and satellite broadcast tuner can be controlled by the remote controller of Management Television machine, thereby has guaranteed that satellite broadcast tuner also is contained in the television receiver easily simply.Therefore, there is no need to consider to be used for the installing space of satellite broadcast tuner separately, and the television receiver of the standard of giving provides the satellite broadcasting of spending few receiving function.Equally, be used for the restaurant, using the inner television set that comprises satellite tuner of the present invention in the system of apartment building etc., therefore, simplifying the structure of community receiving system, and saved expense.
Claims (19)
1, be used in satellite broadcast tuner equipment in the satellite broadcasting receiving equipment, a satellite radio television signal be provided for the standard television broadcasting receiver, said satellite broadcast tuner equipment entirely comprises:
Be used for from by outdoor satellite earth antenna, transducer is connected a TV signal of the one first intermediate-freuqncy signal mid band selection of satellite broadcasting of input and demodulation one predetermined channel and exports the device of a baseband signal with cable;
Be used for separating and exporting the device of a vision signal from said baseband signal;
Be used for separating one pair of carrier signal and paying the ripple signal that carries from said separation and separate to be in harmonious proportion the device of an audio signal is provided from said baseband signal;
The control signal generating means is used to respond a mode select signal of said standard television broadcasting receiver, is created in the receiving mode of selecting between standard television broadcast mode and the satellite broadcasting pattern and selects signal; And
Signal selecting, selectively said receiver said separated the video amplifier circuit that signal and said standard television vision signal frequently are added to said receiver, simultaneously, respond said receiving mode and select signal, the audio output circuit that the demodulated audio signal and the said standard television audio signal of said receiver is added to said receiver selectively
Said satellite broadcast tuner equipment is installed in the said receiver.
2, by the satellite broadcast tuner equipment of claim 1, also comprise:
Be used to receive baseband signal by said selection and demodulator circuit unit feeding, and the device of detection automatic frequency control signal;
Switching device is used to respond the automatic frequency control that is provided by said receiver and selects signal, and the automatic frequency control signal of said detection is provided selectively, and
The channel selection supply unit, according to automatic frequency control signal output from said switching device, handle the channel selection voltage signal of said receiver, and the signal that will handle is selected and demodulating equipment as selecting voltage signal to offer said satellite broadcast channel.
3, by the satellite broadcast tuner of claim 1, also comprise DC power source apparatus, be used for voltage being set, a predetermined DC driving voltage is added to said satellite broadcasting converter by said cable from said receiver according to the horizontal/vertical of said transducer.
4, the satellite broadcast tuner by claim 1 also comprises the said mode select signal that is added to said control signal generating means, it is a tv audio/video selector switch signal, be used to select the operation of television set, or select the operation of audio/video devices.
5, according to the satellite broadcast tuner equipment of claim 4, also comprise said receiving mode selection signal, whenever described television audio/when video selector switch signal is produced for the second time, described receiving mode selects signal to press the audio/video pattern, television mode, the audio/video pattern, the described satellite broadcasting pattern of the selective sequential of satellite broadcasting pattern then.
6, the said said mode select signal that is provided by said control signal generating means also is provided the satellite broadcast tuner equipment by claim 1, and it is a tone squelch selector switch signal of said receiver.
7, a kind of satellite broadcasting community receiving system comprises:
One satellite broadcasting receiving antenna;
At least one is installed in the transducer on the satellite broadcasting receiving antenna focus, the satellite broadcast signal that receives is converted to the first midband signal, so that export the signal that this is converted;
At least first a medium-frequency band signal that provides by this transducer and a RF signal that provides by a standard broadcasting reception antenna, and the signal that receives is added to many cable tv networks; And
Many television receivers, every receives formula satellite broadcast tuner in the facility machine, response TV/satellite mode selects signal to be used for optionally exporting the video and audio signal of the satellite television broadcasting of selecting from this first medium-frequency band signal, and the video and audio signal of the standard television broadcasting of selecting from this RF signal.
8, a kind of equipment that is installed in vision signal broadcasting inside, that be used for satellite of standard TV receiver comprises:
-tuner/FM-demodulator, be used for selecting and the required channel signals of FM-demodulation from an intermediate-freuqncy signal that receives, and be used to provide a wideband baseband signal, said tuner/FM-demodulator has the first input end that receives a tuning voltage, receive second input of a DC power supply, and a coaxial cable joint;
-video processor is used for receiving, and amplifies and the said wideband baseband signal of postemphasising, and eliminates pair carrier wave composition of said wideband baseband signal, and output-the first vision signal;
-audio process is used to receive with amplifying said wideband baseband signal and producing a wideband baseband signal of amplifying and separates said pair of carrier component, and is used for said pair of carrier component is converted to an audio signal;
-audio frequency control wave detector is used to receive said wideband baseband signal, and is used for detection and output one automatic frequency control signal;
Tuning voltage is selected generator, is used to respond said automatic frequency control signal, and reception is produced-tuning voltage by said tv tuner receiver, and said tuning voltage is added to the said first input end of said tuner/FM-demodulator;
The control signal generating means is used to respond the mode select signal by the parts generation of said standard TV receiver, produces a receiving mode control signal;
-the first switch, its first termination is received said first vision signal, second termination is received from-second vision signal of said standard TV receiver output, said first switch is controlled selectively by said receiving mode control signal, so that provide said first and second vision signals to be used to be presented at said standard TV receiver; And
-second switch, its first termination is received said first audio signal, second termination is received from second audio signal of said standard TV receiver output, said second switch is controlled selectively by said receiving mode control signal, so that provide said first and second audio signals to be used to provide the voice output of said standard TV receiver.
9, by the equipment of claim 8, also comprise a terminal jockey, said terminal jockey comprises:
-the first terminal is used to receive said DC power supply;
-the second terminal is connected to said first switch, is used to receive said second vision signal;
-Di three terminals are used for receiving one of said first and second vision signals by said first switch output signal;
-Di four terminals are connected to said second switch, are used to receive said second audio signal;
-Di five terminals are used for receiving one of said first and second audio signals by a said second switch output signal;
-Di six terminals are connected to said control signal generator means, are used to receive said mode select signal;
-Di seven terminals are connected to said tuning voltage and select generator, are used to receive the automatic frequency control that is produced by said standard TV receiver and lead to/new signal; And
-Di eight terminals are connected to said tuning voltage and select generator, are used to receive the said tuning voltage that is produced by said standard TV receiver.
10, by the equipment of claim 8, also comprise:
DC power source apparatus is used for response-polarity selection signal, and said dc voltage is added to said tuner/FM-demodulator.
11, by the equipment of claim 9, also comprise:
-DC power source apparatus is used to respond a polarity selection signal, and said dc voltage is added to said tuner/FM-demodulator; And
The-the 9th terminal of said terminal jockey is used for said polarity selection signal is provided to said DC power source apparatus.
12, by the equipment of claim 11, said DC power source apparatus is used to respond into-horizontal polarization to be selected the said polarity selection signal of signal, 13VDC voltage is added to said tuner/FM-demodulator
13, press the equipment of claim 11, said DC power source apparatus, being used to respond is the said polarity selection signal that a perpendicular polarization is selected signal, and 18VDC voltage is added to said tuner/FM-demodulator.
14, by the equipment of claim 8, said voltage selects generator to comprise:
-Di three switches have first end and second end opened, receive said automatic frequency control signal, said the 3rd switching response by said standard TV receiver produce-automatic frequency control on/off signal exports said automatic frequency control signal selectively; And
-tuning power supply is used for when said the 3rd switch is optionally exported said automatic frequency control signal said tuning voltage being added to said tuner/FM-demodulator.
15, by the equipment of claim 9, said tuning voltage selects generator to comprise:
-Di three switches have first end and second end opened and respond said automatic frequency control on/off signal, receive said automatic frequency control signal; And
-tuning power supply is connected to described the 8th terminal, when said the 3rd switch is exported said automatic frequency control signal selectively, said tuning voltage is added to said tuner/FM-demodulator.
16, by the equipment of claim 8, said mode select signal is an audio/video mode select signal.
17, by the equipment of claim 8, said mode select signal is a tone squelch mode select signal.
18, by the equipment of claim 16, said audio/video mode select signal responds an output of the remote controller that is used for said standard TV receiver and produces.
19, by the equipment of claim 17, said tone squelch mode select signal responds an output of the remote controller that is used for said standard TV receiver and produces.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR920023663 | 1992-12-09 | ||
| KR23663/92 | 1992-12-09 | ||
| KR93003107A KR960008067B1 (en) | 1992-12-09 | 1993-03-03 | Bs tuner apparatus & community receiving system |
| KR3107/93 | 1993-03-03 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1092927A true CN1092927A (en) | 1994-09-28 |
Family
ID=26629416
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 93121696 Pending CN1092927A (en) | 1992-12-09 | 1993-12-09 | Interior formula satellite broadcast tuner of machine and the community receiving system that uses it |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1092927A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100433839C (en) * | 1996-12-17 | 2008-11-12 | 株式会社日立制作所 | Receiving apparatus for digital broadcasting signal and receiving/recording/reproducing apparatus thereof |
| CN102625062A (en) * | 2012-03-20 | 2012-08-01 | 华为终端有限公司 | Transport stream migration equipment and satellite master antenna television system |
| CN101159880B (en) * | 1996-12-17 | 2012-09-05 | 株式会社日立制作所 | Receiving apparatus for digital broadcasting signal and receiving/recording/reproducing apparatus thereof |
-
1993
- 1993-12-09 CN CN 93121696 patent/CN1092927A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100433839C (en) * | 1996-12-17 | 2008-11-12 | 株式会社日立制作所 | Receiving apparatus for digital broadcasting signal and receiving/recording/reproducing apparatus thereof |
| CN101159880B (en) * | 1996-12-17 | 2012-09-05 | 株式会社日立制作所 | Receiving apparatus for digital broadcasting signal and receiving/recording/reproducing apparatus thereof |
| CN102625062A (en) * | 2012-03-20 | 2012-08-01 | 华为终端有限公司 | Transport stream migration equipment and satellite master antenna television system |
| CN102625062B (en) * | 2012-03-20 | 2014-10-08 | 华为终端有限公司 | Transport stream migration equipment and satellite master antenna television system |
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| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
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