CN202496031U - Four-way integrated satellite stream receiver used in digital TV front end - Google Patents
Four-way integrated satellite stream receiver used in digital TV front end Download PDFInfo
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- CN202496031U CN202496031U CN2012201214555U CN201220121455U CN202496031U CN 202496031 U CN202496031 U CN 202496031U CN 2012201214555 U CN2012201214555 U CN 2012201214555U CN 201220121455 U CN201220121455 U CN 201220121455U CN 202496031 U CN202496031 U CN 202496031U
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Abstract
The utility model discloses a four-way integrated satellite stream receiver used in a digital TV front end. The receiver comprises an engine body. The receiver is characterized in that: four low noise block modules, CPLD stream processing modules, an embedded CPU control module and a switch power supply module are provided inside the engine body; and the front panel of the engine body is provided with a liquid crystal display and a keyboard. According to the utility model, by providing four low noise block modules, downlink frequencies of four satellites can be simultaneously received. In addition, the receiver has the advantages of simple operation, low power consumption, stable and reliable performance, high receiving sensitivity, high performance-price ratio, and greatly reduced requirements for a signal source. The receiver can be widely used for front-end program stream receiving and processing of various CATV cable digital TVs, MMDS wireless digital TVs and the like.
Description
Technical field
The utility model belongs to broadcast satellite code stream receiving equipment field, is specifically related to a kind of four road integrated form satellite code stream receivers that are used for digital TV front-end.
Background technology
In the digital TV front-end system building; Often adopt single channel satellite code stream receiver that the free program on the satellite is received line of numbers code stream (TS) conversion of going forward side by side; It is one of visual plant of the system of building; The separate unit receiver can only receive the program bag of a satellite downlink frequency; In the digital television transmission system based on DVB-C, forming a digital television transfer program bag generally needs the satellite code stream receiver more than 4 to work simultaneously, the code stream after the conversion (TS) signal get into the multiplexer packing handle generate one the tunnel meet DVB-C system standard (ISO/IEC13818) MPTS (TS) output.This system configuration framework tends to cause engineering construction complicated, and equipment is too many on the frame, and power consumption is big, safeguards shortcomings such as debugging trouble.
In order to solve above-mentioned deficiency of the prior art, the utility model provides a kind of new solution.
The utility model content
The technical problem that the utility model will solve is: be directed to the deficiency of prior art, a kind of four road integrated form satellite code stream receivers that can receive four satellite downlink frequencies simultaneously are provided.
For reaching the foregoing invention purpose; The technical scheme that the utility model adopted is: a kind of four road integrated form satellite code stream receivers that are used for digital TV front-end are provided; Comprise body; It is characterized in that: be provided with four tuner modules, CPLD code stream processing module, embedded type CPU control module, switch power module in the said body, the front panel of said body is provided with LCDs and keyboard;
Said four tuner modules are respectively passage one tuner module, passage two tuner modules, passage three tuner modules, passage four tuner modules; The tuner module of said each passage is respectively equipped with the RF input/output end port; Said CPLD code stream processing module is provided with TS stream output port; The tuner module of each passage is connected with satellite antenna through the RF input/output end port respectively; The parallel TS stream signal output part of the tuner module of each passage is connected with the input of CPLD code stream processing module, and the tuner module of each passage is connected with the embedded type CPU control module through the Data Control bus respectively; Said LCDs is connected with the CPU control module respectively with keyboard.
Said tuner module is for can directly demodulating the GSNM-01R type tuner of the parallel TS traffic spike that meets the DVB standard.
The chip that said CPLD code stream control module adopts is MAXII series of programmable logic integrated chip EPM3064ATC44.
The chip that said embedded type CPU control module adopts is 32 ARM nuclear IC chip LM3S6911.
Said LCDs is 160 * 32 a dot matrix Chinese and English LCDs, and said keyboard is 7 * 1 matrix keyboards.
Four road integrated form satellite code stream receivers that are used for digital TV front-end that the utility model provided compared with prior art have following beneficial effect:
1) the utility model is through being provided with four tuner modules; Can receive four satellite downlink frequencies simultaneously; One of the utility model just can be replaced four of traditional single channel satellite code stream receiving equipments, solves the many problems of chassis equipment, significantly reduces chassis equipment and takes up room.
2) the utility model is provided with 160 * 32 dot matrix Chinese and English LCDs and keyboard, and all four road satellites receive parameter all can pass through LCDs and keyboard setting, and is simple to operate easy, alleviated the workload that this machine is safeguarded greatly.
3) the utility model is simple to operate, and power consumption is little, and is stable and reliable for performance; Receiving sensitivity is high; Cost performance is high, and the requirement of signal source is reduced greatly, and the reception that can be widely used in satellite programming code streams such as various CATV cable digital TVs, MMDS digital TV front-end is handled.
Description of drawings
Fig. 1 is the complete machine principle assumption diagram that is used for four road integrated form satellite code stream receivers of digital TV front-end.
Embodiment
Below in conjunction with accompanying drawing the embodiment of the utility model is done and to be described in detail:
As shown in Figure 1; Four road integrated form satellite code stream receivers that the utility model is used for digital TV front-end comprise body; Be provided with four tuner modules, CPLD code stream processing module, embedded type CPU control module, switch power module in the said body, the front panel of said body is provided with LCDs and keyboard;
Said four tuner modules are respectively passage one tuner module, passage two tuner modules, passage three tuner modules, passage four tuner modules; The tuner module of said each passage is respectively equipped with the RF input/output end port; Said CPLD code stream processing module is provided with TS stream output port; The tuner module of each passage is connected with satellite antenna through the RF input/output end port respectively; The parallel TS stream signal output part of the tuner module of each passage is connected with the input of CPLD code stream processing module, and the tuner module of each passage is connected with the embedded type CPU control module through the Data Control bus respectively; Said LCDs is connected with the CPU control module respectively with keyboard.
Said tuner module is for can directly demodulating the GSNM-01R type tuner of the parallel TS traffic spike that meets the DVB standard.
The chip that said CPLD code stream control module adopts is MAXII series of programmable logic integrated chip EPM3064ATC44.
The chip that said embedded type CPU control module adopts is 32 ARM nuclear IC chip LM3S6911.
Said LCDs is 160 * 32 a dot matrix Chinese and English LCDs, and said keyboard is 7 * 1 matrix keyboards.
The course of work of four road integrated form satellite code stream receivers that the utility model is used for digital TV front-end is following:
Satellite antenna LNB output radio frequency (RF) signal; The frequency range of signal is 950MHz-2150MHz; Radiofrequency signal directly or the tuner module through each passage of power splitter output port feed-in; Simultaneously can also go out (RF OUT) port and the FD feed source is provided to next stage tuner module through the radio frequency ring of tuner module; The tuner module of each passage is communicated by letter with the embedded type CPU control module through IIC Data Control bus; Acceptance is from the control command signal of CPU control module, and the control command of CPU control module comprises that receive frequency parameter, symbol rate parameter, horizontal/vertical (H/V) polarization control voltage, the satellite antenna LNB supply power voltage of tuner are provided with etc.
The tuner that the utility model is selected for use is the GSNM-01R type tuner of the band signal demodulation integrated circuit of Gauss Bel numeral science and technology Co., Ltd production; Can directly demodulate the parallel TS traffic spike that meets the DVB standard; When tuner receive from the CPU control module instruction is set after; Promptly can automatically become locked to this receive frequency; And inform the working condition of this unit of CPU control module through inquiry/answer-mode, because parallel TS stream signal is unfavorable for system transmissions, therefore; Also need the parallel TS stream signal of tuner output be sent into CPLD code stream processing module and carry out parallel/serial conversion; Handle the signal that obtains meeting ASI standard serial transmission mode at last, output signal end of CPLD code stream processing module is for meeting the BNC physical interface of DVB standard, and the tuner signal processing flow and the operation principle of four passages of the utility model receiver are identical.
CPLD code stream control module adopts be the MAXII series of programmable logic integrated chip EPM3064ATC44 of altera corp as data-interface, advantage such as that this chip has is low in energy consumption, speed fast, moderate, stable and reliable for performance.
The embedded type CPU control module is the core of the utility model receiver; This module has adopted 32 ARM nuclear IC chip LM3S6911 of TI (Texas Instrument), and this chip is 32 a Cortex-M3v7M processor cores, has low in energy consumption; The speed of service fast (supporting the 50MHz system clock); Advantages such as instruction execution cycle is short, and the I/O mouth is abundant, and integrated peripheral hardware is numerous.We have adopted ripe this chip program of real time operating system uC/OS II exploitation in this receiver, and then have shortened the Development of Software cycle, and the flexibility of system is improved, and software debugging is simply easy, stable and reliable operation.
The power supply of the utility model has adopted the modular switch power supply of mature and reliable, two groups of voltage outputs altogether, one group of 5V 2.5A; Supply system board, another group 24V 0.5A supplies satellite antenna LNB power output circuit, whole power module band metallic shield square; Effectively the shielded power supply noise is to the interference of system; This power supply is through long-play test, proves reliable and stablely, and failure rate is extremely low.
The utility model is not limited to above-mentioned instance, in claims institute restricted portion of the utility model, and various distortion that those skilled in the art can make without creative work or revise the protection that all receives this patent.
Claims (5)
1. four road integrated form satellite code stream receivers that are used for digital TV front-end; Comprise body; It is characterized in that: be provided with four tuner modules, CPLD code stream processing module, embedded type CPU control module, switch power module in the said body, the front panel of said body is provided with LCDs and keyboard;
Said four tuner modules are respectively passage one tuner module, passage two tuner modules, passage three tuner modules, passage four tuner modules; The tuner module of said each passage is respectively equipped with the RF input/output end port; Said CPLD code stream processing module is provided with TS stream output port; The tuner module of each passage is connected with satellite antenna LNB through the RF input/output end port respectively; The parallel TS stream signal output part of the tuner module of each passage is connected with the input of CPLD code stream processing module, and the tuner module of each passage is connected with the embedded type CPU control module through the Data Control bus respectively; Said LCDs is connected with the CPU control module respectively with keyboard.
2. four road integrated form satellite code stream receivers that are used for digital TV front-end according to claim 1 is characterized in that: said tuner module is for can directly demodulating the GSNM-01R type tuner of the parallel TS traffic spike that meets the DVB standard.
3. four road integrated form satellite code stream receivers that are used for digital TV front-end according to claim 1 is characterized in that: the chip that said CPLD code stream control module adopts is MAXII series of programmable logic integrated chip EPM3064ATC44.
4. four road integrated form satellite code stream receivers that are used for digital TV front-end according to claim 1 is characterized in that: the chip that said embedded type CPU control module adopts is 32 ARM nuclear IC chip LM3S6911.
5. four road integrated form satellite code stream receivers that are used for digital TV front-end according to claim 1 is characterized in that: said LCDs is 160 * 32 a dot matrix Chinese and English LCDs, and said keyboard is 7 * 1 matrix keyboards.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201214555U CN202496031U (en) | 2012-03-28 | 2012-03-28 | Four-way integrated satellite stream receiver used in digital TV front end |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201214555U CN202496031U (en) | 2012-03-28 | 2012-03-28 | Four-way integrated satellite stream receiver used in digital TV front end |
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| Publication Number | Publication Date |
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| CN202496031U true CN202496031U (en) | 2012-10-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012201214555U Expired - Fee Related CN202496031U (en) | 2012-03-28 | 2012-03-28 | Four-way integrated satellite stream receiver used in digital TV front end |
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| CN (1) | CN202496031U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016041417A1 (en) * | 2014-09-16 | 2016-03-24 | 深圳市九洲电器有限公司 | Circuit and device for controlling lnb loop polarization voltage switching |
| CN106603089A (en) * | 2017-01-16 | 2017-04-26 | 北京星网卫通科技开发有限公司 | Multi-LNB multi-local-oscillation control method and device |
-
2012
- 2012-03-28 CN CN2012201214555U patent/CN202496031U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016041417A1 (en) * | 2014-09-16 | 2016-03-24 | 深圳市九洲电器有限公司 | Circuit and device for controlling lnb loop polarization voltage switching |
| CN106603089A (en) * | 2017-01-16 | 2017-04-26 | 北京星网卫通科技开发有限公司 | Multi-LNB multi-local-oscillation control method and device |
| CN106603089B (en) * | 2017-01-16 | 2018-10-16 | 北京星网卫通科技开发有限公司 | A kind of more local oscillator control method and device of more LNB |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121017 Termination date: 20160328 |
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| CF01 | Termination of patent right due to non-payment of annual fee |