CN201910780U - Satellite receiving one-out-of-four chip structure - Google Patents
Satellite receiving one-out-of-four chip structure Download PDFInfo
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- CN201910780U CN201910780U CN2010206783657U CN201020678365U CN201910780U CN 201910780 U CN201910780 U CN 201910780U CN 2010206783657 U CN2010206783657 U CN 2010206783657U CN 201020678365 U CN201020678365 U CN 201020678365U CN 201910780 U CN201910780 U CN 201910780U
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Abstract
The utility model relates to a satellite receiving one-out-of-four chip structure, which comprises a switch tube module, a selecting module, an amplifying module and a power supply module. The switch tube module, the selecting module, the amplifying module and the power supply module are arranged integrally. A DiSEqC (digital satellite equipment control) signal sent from a satellite receiver is amplified by the amplifying module, decoded to form a control signal by an MCU (micro control unit) or special signal processing integrated circuit, and then inputted to the switch tube module so that a corresponding switch tube is gated, current is transmitted to a selected port in a plurality of LNB (low-noise block-down converter) ports from a VDD ( voltage drain device), needed satellite signals are output from a gated high-frequency head by the selecting module and then are processed by the satellite receiver, the power supply module provides voltage lower than the VDD to serve as a ground signal of the MCU or special signal processing integrated circuit, and the VDD is a power source of the MCU or special signal processing integrated circuit. According to the integrated technical scheme, the chip structure is simpler and easier to maintain, the total number of components of the chip structure is reduced greatly, cost is reduced greatly, and the requirement of batch production is met.
Description
Technical field
The utility model is particularly related to a kind of four of satellite receiving system that is applied to of technical field of integrated circuits and selects a special chip.
Background technology
At present DiSEqC four selects one to switch the switching system signal processing is with a MCU or special signal processing integrated circuit in the satellite receiver that exists, and other switching tube module, tuner outputs to four and selects a satellite-signal that switches switching system to select module, the supply module of above-mentioned signal processing MCU or special signal processing integrated circuit and receiver to four select a DiSEqC signal amplification module that switches switching system (part special signal processing integrated circuit is integrated receiver to four selects a DiSEqC signal amplification module that switches switching system) all to form (consulting Fig. 1) by discrete device, after the DiSEqC signal that sends from satellite receiver closes by capacitor C 1 lotus root through triode Q1 and resistance R 1, R2, after amplifying, the amplifying circuit that R3 forms just obtains to supply the directly signal of processing of MCU (or part special signal processing integrated circuit); Voltage stabilizing didoe Z1 and resistance R 4 formed the supply module of above-mentioned signal processing MCU or special signal processing integrated circuit, and wherein VDD is as the power supply of supply module, the VSS ground as supply module; Diode D1, D2, D3, D4, D5, D6 and resistance R 5 and capacitor C 2 composition tuners output to four and select a satellite-signal that switches switching system to select module; Triode Q2, Q3, Q4, Q5 and resistance R 6, R7, R8, R9 form the switching tube module.This satellite receives four and selects a switching switching device sum various, is not easy to maintenance, is difficult to realize producing in enormous quantities.
The utility model content
The purpose of this utility model is to propose a kind of satellite reception four and selects a chip structure, it is by integrated design, make the structure of chip more succinct, for ease of maintenaince and component count significantly reduce, cost significantly reduces, be fit to the demand of production in enormous quantities, thereby overcome deficiency of the prior art.
For realizing above-mentioned utility model purpose, the utility model has adopted following technical scheme:
A kind of satellite receives four and selects a chip structure, it is characterized in that, described chip structure comprises the switching tube module of integrated setting, select module, amplification module and supply module, the DiSEqC signal that sends from satellite receiver is after the amplification module processing and amplifying, form control signal by MCU or the decoding of special signal processing integrated circuit again, then be transfused to the corresponding switching tube of switching tube module gating, and electric current is delivered to a selected port several LNB ports from VDD, select module that the satellite-signal of needs is handled from being exported for satellite receiver by the gating tuner simultaneously, supply module provides one to be lower than the earth signal of the voltage of VDD as MCU or special signal processing integrated circuit, and described VDD is the power supply of MCU or special signal processing integrated circuit.
Particularly, described switching tube module has four and above input, described LNB port be four and more than.
Described chip structure comprises first to the 5th triode, the first to the 20 diode, voltage stabilizing didoe, first and second electric capacity and first to the tenth resistance;
Described first electric capacity, first, second and third resistance and first triode are formed amplification module;
The signal that first electric capacity, one termination is sent from satellite receiver, another termination first resistance, another termination first transistor base of first resistance and second resistance, one end, the collector electrode of first triode meet the second resistance other end, the 3rd resistance one end and defeated end, another termination of the 3rd resistance VDD;
Described voltage stabilizing didoe, fourth, fifth resistance and first, second diode are formed supply module provides a ground that is lower than the voltage of VDD as above-mentioned MCU or special signal processing integrated circuit;
The voltage stabilizing didoe negative pole connects VDD and the 5th resistance one end, and negative pole connects the 4th resistance one end, VSS and second diode cathode, another termination first diode cathode of the 5th resistance, and first diode cathode connects second diode cathode, the 4th resistance other end ground connection;
Described the 3rd～20 diode and the 6th resistance second electric capacity are formed the selection module, second electric capacity, one termination VDD, another termination the 6th resistance one end and the 3rd, the negative pole of four diodes, the 6th resistance other end ground connection, the five～eight diode both positive and negative polarity respectively links to each other, the the 9th～12 diode both positive and negative polarity respectively links to each other, the the 13～16 diode both positive and negative polarity respectively links to each other, the the 17～20 diode both positive and negative polarity respectively links to each other, the 5th, the 9th, the 13, the 17 diode cathode connects the collector electrode of second to the 5th triode respectively, the positive pole of the 3rd diode connects the 8th and the negative pole of the 12 diode, and the 4th diode cathode connects the 16 and the negative pole of the 20 diode;
Second to the 5th triode and the 7th to the tenth resistance are formed the switching tube module, the the 7th to the tenth resistance one end meets input signal B1, B2, B3, B4 respectively, the the 7th to the tenth resistance other end connects the base stage of second to the 5th triode respectively, the emitter-base bandgap grading of second to the 5th triode meets VDD, and the collector electrode of second to the 5th triode connects the 5th, nine, 13,17 diode cathodes respectively and LNB1, LNB2, LNB3, LNB4 hold.
Description of drawings
Fig. 1 selects the circuit diagram of a switching switching system for DiSEqC four in the prior art;
Fig. 2 selects the structured flowchart of a chip for the utility model satellite reception four;
Fig. 3 is the circuit diagram of a preferred embodiment of the present utility model.
Embodiment
Select the defective of a switching switching system at DiSEqC four in the existing satellite receiver, the utility model has adopted following technical scheme, that is: switching tube module, tuner outputs to four and selects a satellite-signal that switches switching system to select module, the supply module of signal processing MCU or special signal processing integrated circuit and receiver to four select a DiSEqC signal amplification module that switches switching system (part special signal processing integrated circuit is integrated receiver to four selects a DiSEqC signal amplification module that switches switching system), supply module, be based on the application-specific integrated circuit (ASIC) scheme made from Bipolar technology, can reduce system cost greatly, circuit system is more for ease of maintenaince succinct, the device sum significantly reduces suitable production in enormous quantities the in enormous quantities.
As shown in Figure 2, the DiSEqC signal that sends from receiver is delivered to B1, B2, the corresponding switching tube of B3, B4 end gating of switching tube module with control signal after by MCU or the decoding of special signal processing integrated circuit, electric current is delivered to a port LNB1, LNB2, these four ports of LNB3, LNB4 from VDD, select module that the corresponding tuner of this port is outputed to four simultaneously and select a satellite-signal that switches switching system to deliver to the Y2 port to handle for receiver.Receiver to four selects once the DiSEqC signal that switches switching system and delivers to the A end obtains supplying the direct processing of MCU (or part special signal processing integrated circuit) after amplification module amplifies signal, provide one simultaneously than the earth signal of the low voltage of VDD as above-mentioned MCU or special signal processing integrated circuit, and the power supply of VDD as above-mentioned MCU or special signal processing integrated circuit.When not needing function corresponding, need only corresponding module is removed.
Below in conjunction with a preferred embodiment and accompanying drawing the technical solution of the utility model is further described.
Consult Fig. 3, present embodiment is formed (device of frame of broken lines is exactly the device that is made in IC interior) by an integrated circuit and a small amount of peripheral components, the DiSEqC signal that sends from receiver is delivered to the B1 of switching tube module with control signal after by MCU or the decoding of special signal processing integrated circuit, B2, B3, the corresponding switching tube of B4 end gating, electric current is delivered to LNB1 from VDD, LNB2, LNB3, a port in these four ports of LNB4, simultaneously the corresponding tuner of this port being outputed to four selects one to switch the satellite-signal of switching system from LNB1, LNB2, LNB3, that port of gating in these four ports of LNB4, through delivering to the Y2 port behind the diode network, R6 and C2 makeup time network also are coupled to vdd terminal to this satellite-signal, deliver to receiver by cable then and handle.
Receiver to four select a DiSEqC signal that switches switching system deliver to the A1 end through and be coupled to by capacitor C 1 the A end after the amplifying circuit that R1, R2, R3, Q1 form amplifies, deliver to Y1 can be for the direct signal of processing of MCU (or part special signal processing integrated circuit).Voltage stabilizing didoe Z1, resistance R 4, resistance R 5, diode D1, diode D2 form power supply circuits, this circuit can provide one than the voltage of the low 5V of the VDD ground as above-mentioned MCU or special signal processing integrated circuit, and the power supply of VDD as above-mentioned MCU or special signal processing integrated circuit.
Obviously, present embodiment has substituted discrete device dispersion of the prior art, large batch of fully by integrated circuit shown in Figure 3 and a small amount of peripheral components, reduces greatly that system cost, circuit system are more succinct for ease of maintenaince, the device sum significantly reduces and be fit to produce in enormous quantities.
Below only be concrete exemplary applications of the present utility model, protection range of the present utility model is not constituted any limitation.All employing equivalents or equivalence are replaced and the technical scheme that forms, all drop on the utility model rights protection scope it.
Claims (1)
1. a satellite receives four and selects a chip structure, it is characterized in that, described chip structure comprises switching tube module, selection module, amplification module and the supply module of integrated setting;
Described amplification module is by first electric capacity, and first, second and third resistance and first triode are formed;
The signal that first electric capacity, one termination is sent from satellite receiver, another termination first resistance, another termination first transistor base of first resistance and second resistance, one end, the collector electrode of first triode connects the second resistance other end, the 3rd resistance one end and output, another termination of the 3rd resistance VDD;
Described supply module is by voltage stabilizing didoe, and fourth, fifth resistance and first, second diode are formed, and it provides a ground that is lower than the voltage of VDD as above-mentioned MCU or special signal processing integrated circuit;
Described voltage stabilizing didoe negative pole connects VDD and the 5th resistance one end, negative pole connects the 4th resistance one end, VSS and second diode cathode, another termination first diode cathode of the 5th resistance, first diode cathode connects second diode cathode, the 4th resistance other end ground connection;
Described selection module is made up of the 3rd～20 diode and the 6th resistance and second electric capacity, second electric capacity, one termination VDD, another termination the 6th resistance one end and the 3rd, the negative pole of four diodes, the 6th resistance other end ground connection, the five～eight diode both positive and negative polarity respectively links to each other, the the 9th～12 diode both positive and negative polarity respectively links to each other, the the 13～16 diode both positive and negative polarity respectively links to each other, the the 17～20 diode both positive and negative polarity respectively links to each other, the 5th, the 9th, the 13, the 17 diode cathode connects the collector electrode of second to the 5th triode respectively, the positive pole of the 3rd diode connects the 8th and the negative pole of the 12 diode, and the 4th diode cathode connects the 16 and the negative pole of the 20 diode;
Described switching tube module is made up of the second～five triode and the 7th to the tenth resistance, the the 7th to the tenth resistance one end meets input signal B1, B2, B3, B4 respectively, the the 7th to the tenth resistance other end connects the base stage of second to the 5th triode respectively, the emitter-base bandgap grading of the second～five triode meets VDD, and the collector electrode of the second～five triode connects the 5th, nine, 13,17 diode cathodes respectively and LNB1, LNB2, LNB3, LNB4 hold.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206783657U CN201910780U (en) | 2010-12-24 | 2010-12-24 | Satellite receiving one-out-of-four chip structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206783657U CN201910780U (en) | 2010-12-24 | 2010-12-24 | Satellite receiving one-out-of-four chip structure |
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| Publication Number | Publication Date |
|---|---|
| CN201910780U true CN201910780U (en) | 2011-07-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206783657U Expired - Lifetime CN201910780U (en) | 2010-12-24 | 2010-12-24 | Satellite receiving one-out-of-four chip structure |
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| CN (1) | CN201910780U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102136833A (en) * | 2010-12-24 | 2011-07-27 | 苏州华芯微电子股份有限公司 | Satellite receiving four-to-one selective chip structure |
-
2010
- 2010-12-24 CN CN2010206783657U patent/CN201910780U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102136833A (en) * | 2010-12-24 | 2011-07-27 | 苏州华芯微电子股份有限公司 | Satellite receiving four-to-one selective chip structure |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110727 |