CN103702165A - Set top box with receiving and processing functions for KA waveband satellite signals - Google Patents
Set top box with receiving and processing functions for KA waveband satellite signals Download PDFInfo
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- CN103702165A CN103702165A CN201410009715.3A CN201410009715A CN103702165A CN 103702165 A CN103702165 A CN 103702165A CN 201410009715 A CN201410009715 A CN 201410009715A CN 103702165 A CN103702165 A CN 103702165A
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Abstract
The invention provides a set top box with receiving and processing functions for KA waveband satellite signals. The set top box comprises a KA waveband receiving processing module arranged in the set top box; the KA waveband receiving processing module comprises a receiving front-end for receiving signals with downlink frequencies, a judging module for performing segment processing on the receiving frequencies and judging the number of the local frequency belonging to the current frequency band, and a conversion module for converting a medium frequency, locking the signals and finally outputting a transport stream (TS) according with the MPEG-2 standard, wherein the transport stream is provided for a CPU (central processing unit) to be analyzed. The invention also provides a processing method for the KA waveband signals in the set top box. The KA waveband signal receiving processing module is arranged in the set top box, so the set top box can receive and process KA waveband television signals and can modulate the same, a user can view KA waveband television shows and the television shows are enriched.
Description
Technical field
The present invention relates to a kind ofly for changing the Set Top Box of satellite TV signal, particularly relate to a kind of Set Top Box having KA band satellite signal reception & disposal function.
Background technology
Digital television signal of today is generally all propagated via satellite, and in prior art, the wave band of digital television signal transmission generally concentrates on C-band and KU wave band, the band limits of C-band: 3.4-4.2GHz, the band limits of Ku wave band: 10.75-12.75GHz; And along with the rolling up of TV programme signal, above-mentioned two wave bands can't bear the heavy load, the deficiency of bandwidth becomes a bottleneck of the digital Polarizations for Target Discrimination in Clutter of restriction.And that the KA wave band that spectral range is 18.2-21.2GHz has available bandwidth is wide, to disturb less, the advantage such as communication apparatus volume is little, is more and more subject to people's attention, and is applied to more and more widely in satellite television communication.In addition, KA frequency range satellite communication system can be high speed satellite communication, the transmission of gigabit level wideband digital, high definition TV (HDTV), SNG (SNG), VSAT business, directly to new business such as family's (DTH) business and individual satellite communications, provides a kind of brand-new means.It is larger that the shortcoming of KA frequency range is that rain declines, demand to device and technique is higher, but these can take correlation technique means to be overcome, KA frequency range satellite communication system has greater advantage providing aspect two-way multimedia service, and the trend that the TV programme of KA wave band increases is day by day obvious, 19.2 ° of E of Astra 1KR/1L/1M/2C at for example.Along with the KA wave band tv programme source rolling up, to this KA wave band TV programme signal to accept processing demands market also increasing, therefore, accelerating research and development can efficiently accept, process the Set Top Box of KA wave band TV signal and also become digital video broadcasting DVB(Digital Video Broadcasting) task of top priority of industry.
Summary of the invention
The invention provides a kind of Set Top Box having KA band satellite signal reception & disposal function, described Set Top Box comprises the KA wave band receiving processing module being built in Set Top Box, and described KA wave band receiving processing module comprises: for receiving the front end of accepting of downstream frequency signal; For receive frequency is carried out to segment processing, judge the judge module of the local frequency numerical value of current affiliated frequency range, conversion module, for the intermediate frequency that converts; Be used for carrying out semaphore lock, the parsing module that CPU resolves.Judge module in the built-in KA wave band receiving processing module of Set Top Box is according to the frequency point information at satellite acquisition interface, according to signal in band scope, judgement is C-band satellite, KU band satellite or KA band satellite, judge after KA wave band, the signal of KA wave band is divided and does three sections of processing, (1): 18.20-19.20; (2): 19.20-20.20; (3) 20.20-21.20.Described judge module can be according to different segmentations, adopt different local frequencies to remove the intermediate frequency numerical value that converts corresponding, and then show that correct locked frequency point value offers front end and processes, incoming frequency (Input frequency) is (GHz): 18.20-19.20, and its L.O. frequency (GHz) is: 17.25; Incoming frequency (Input frequency) is (GHz): 19.20 to 20.200, and its L.O. frequency (GHz) is 18.25; Incoming frequency (Input frequency) is (GHz): 20.20 to 21.20, its L.O. frequency (GHz) is 19.25.Incoming frequency in described conversion module (Input frequency) is (GHz) 18.539 (GHz), corresponding L.O. Frequency is 17.25 (GHz), and conversing intermediate frequency is 18.539 (GHz)-17.25 (GHz)=1.289 (GHz).Also comprise that the intermediate frequency that conversion module is conversed imports tuning demodulator (Tuner-Demodulator) end into and carries out frequency locking, the transport stream (TS) that finally output meets Moving Picture Experts Group-2 offers CPU parsing, completes program searching work.
The present invention also provides a kind of KA band signal processing method that is built in Set Top Box, and described method comprises: S1: Set Top Box receives downstream frequency signal; S2: frequency segmentation is processed, judges the local frequency numerical value of current affiliated frequency range; S3: conversion intermediate frequency; S4: carry out semaphore lock, CPU resolves.Step S2 also comprises: according to signal in band scope, judgement is C-band satellite, and KU band satellite or KA band satellite, judge after KA wave band, and the signal of KA wave band is divided and does three sections of processing, (1): 18.20-19.20; (2): 19.20-20.20; (3) 20.20-21.20.
Described step S3 also wraps the different segmentations in step S2, adopt different local frequencies to remove the intermediate frequency numerical value that converts corresponding, and then show that correct locked frequency point value offers front end and processes, incoming frequency (Input frequency) is (GHz): 18.20-19.20, and its L.O. frequency (GHz) is: 17.25; Incoming frequency (Input frequency) is (GHz): 19.20 to 20.200, and its L.O. frequency (GHz) is 18.25; Incoming frequency (Input frequency) is (GHz): 20.20 to 21.20, its L.O. frequency (GHz) is 19.25.Incoming frequency (Input frequency) is (GHz) 18.539 (GHz), and corresponding L.O. Frequency is 17.25 (GHz), and conversing intermediate frequency is 18.539 (GHz)-17.25 (GHz)=1.289 (GHz).Step S4 also comprises that the intermediate frequency converting is imported into tuning demodulator (Tuner-Demodulator) end carries out frequency locking, and the transport stream (TS) that finally output meets Moving Picture Experts Group-2 offers CPU parsing, completes program searching work.
With respect to prior art, the present invention has the following advantages:
The present invention accepts processing module by built-in KA band signal in Set Top Box, makes Set Top Box can accept and process KA wave band TV signal, and can watch KA wave band TV programme to its modulation /demodulation, has enriched TV programme.
figure of description
Fig. 1 is the flow chart of the KA band signal processing method of the embodiment of the present invention.
Specific embodiment
Invention thinking of the present invention is: in Set Top Box, by putting KA wave band of the present invention, accept processing module, solve acceptance, the processing of KA band signal, corresponding intermediate frequency converts, make Set Top Box accept front end locking signal effectively accurately, provide correct stable signal source to resolve to CPU, and then the audio, video data obtaining is play in real time.
Now by describing technical scheme of the present invention in detail in conjunction with Figure of description and specific embodiment.
The Set Top Box of the present embodiment is a kind of Set Top Box having KA band satellite signal reception & disposal function: described Set Top Box comprises the KA wave band receiving processing module being built in Set Top Box, and described KA wave band receiving processing module comprises: for receiving the front end of accepting of downstream frequency signal; For receive frequency is carried out to segment processing, judge the judge module of the local frequency numerical value of current affiliated frequency range, conversion module, for the intermediate frequency that converts; Be used for carrying out semaphore lock, the parsing module that CPU resolves.
The KA band signal processing method of the Set Top Box of the present embodiment as shown in Figure 1, comprises the following steps S1: Set Top Box receives downstream frequency signal; S2: frequency segmentation is processed, judges the local frequency numerical value of current affiliated frequency range; S3: conversion intermediate frequency; S4: carry out semaphore lock, CPU resolves.Be specifically described as follows: S1: Set Top Box is obtained downstream frequency signal; S2: with the judge module in the built-in KA wave band receiving processing module of Set Top Box according to the frequency point information at satellite acquisition interface, according to signal in band scope, judgement is C-band satellite, KU band satellite or KA band satellite, general downstream frequency scope is divided into C-band: 3.4-4.2GHz; Ku wave band: 10.75-12.75GHz; KA wave band; 18.2-21.2GHz; Judge after KA wave band, the signal of KA wave band is divided and does three sections of processing, (1): 18.20-19.20; (2): 19.20-20.20; (3) 20.20-21.20; S3: to different segmentations, conversion module adopts different local frequencies to remove the intermediate frequency numerical value that converts corresponding, and then show that correct locked frequency point value offers front end and processes, incoming frequency (Input frequency) is (GHz): 18.20-19.20, and its L.O. frequency (GHz) is: 17.25; Incoming frequency (Input frequency) is (GHz): 19.20 to 20.200, and its L.O. frequency (GHz) is 18.25; Incoming frequency (Input frequency) is (GHz): 20.20 to 21.20, its L.O. frequency (GHz) is 19.25.This program of Penthouse 3D under Astra satellite for example, incoming frequency (Input frequency) is (GHz) 18.539 (GHz), corresponding L.O. Frequency is 17.25 (GHz), and conversing intermediate frequency is 18.539 (GHz)-17.25 (GHz)=1.289 (GHz).S4: the intermediate frequency converting is imported into tuning demodulator (Tuner-Demodulator) end and carry out frequency locking, the transport stream (TS) that finally output meets Moving Picture Experts Group-2 offers CPU parsing, completes program searching work.
Set Top Box of the prior art can only be searched for the signal program of C-band and KU wave band, cannot realize the modulation /demodulation of KA band signal, and the Set Top Box of application the present embodiment can be to KA band satellite signal reception & disposal, make Set Top Box can adapt to the signal source of diversification, enriched the program source of terminal client.
Claims (10)
1. the Set Top Box having KA band satellite signal reception & disposal function, it is characterized in that:, described Set Top Box comprises the KA wave band receiving processing module being built in Set Top Box, and described KA wave band receiving processing module comprises: for receiving the front end of accepting of downstream frequency signal; For receive frequency is carried out to segment processing, judge the judge module of the local frequency numerical value of current affiliated frequency range, conversion module, for the intermediate frequency that converts; Be used for carrying out semaphore lock, finally output meets the transport stream (TS) of Moving Picture Experts Group-2 and then offers CPU resolves.
2. Set Top Box as claimed in claim 1: it is characterized in that, judge module in the built-in KA wave band receiving processing module of Set Top Box is according to the frequency point information at satellite acquisition interface, according to signal in band scope, judgement is C-band satellite, KU band satellite or KA band satellite, judge after KA wave band, the signal of KA wave band is divided and does three sections of processing, (1): 18.20-19.20; (2): 19.20-20.20; (3) 20.20-21.20.
3. Set Top Box as claimed in claim 2: it is characterized in that, described judge module can be according to different segmentations, adopt different local frequencies to remove the intermediate frequency numerical value that converts corresponding, and then show that correct locked frequency point value offers front end and processes, incoming frequency (Input frequency) is (GHz): 18.20-19.20, and its L.O. frequency (GHz) is: 17.25; Incoming frequency (Input frequency) is (GHz): 19.20 to 20.200, and its L.O. frequency (GHz) is 18.25; Incoming frequency (Input frequency) is (GHz): 20.20 to 21.20, its L.O. frequency (GHz) is 19.25.
4. method as claimed in claim 3, it is characterized in that, incoming frequency in described conversion module (Input frequency) is (GHz) 18.539 (GHz), corresponding L.O. Frequency is 17.25 (GHz), and conversing intermediate frequency is 18.539 (GHz)-17.25 (GHz)=1.289 (GHz).
5. the method for claim 1, is characterized in that, also comprises that the intermediate frequency that conversion module is conversed imports tuner (TUNER) end into and carries out frequency locking, and CPU resolves, and completes program searching work.
6. a KA band signal processing method that is built in Set Top Box, is characterized in that, described method comprises: S1: Set Top Box receives downstream frequency signal; S2: frequency segmentation is processed, judges the local frequency numerical value of current affiliated frequency range; S3: conversion intermediate frequency; S4: carry out semaphore lock, CPU resolves.
7. method as claimed in claim 6, is characterized in that, step S2 also comprises: according to signal in band scope, judgement is C-band satellite, KU band satellite or KA band satellite, judge after KA wave band, the signal of KA wave band is divided and does three sections of processing, (1): 18.20-19.20; (2): 19.20-20.20; (3) 20.20-21.20.
8. method as claimed in claim 6, it is characterized in that, step S3 also wraps the different segmentations in step S2, adopt different local frequencies to remove the intermediate frequency numerical value that converts corresponding, and then show that correct locked frequency point value offers front end and processes, incoming frequency (Input frequency) is (GHz): 18.20-19.20, and its L.O. frequency (GHz) is: 17.25; Incoming frequency (Input frequency) is (GHz): 19.20 to 20.200, and its L.O. frequency (GHz) is 18.25; Incoming frequency (Input frequency) is (GHz): 20.20 to 21.20, its L.O. frequency (GHz) is 19.25.
9. method as claimed in claim 8, it is characterized in that, incoming frequency (Input frequency) is (GHz) 18.539 (GHz), corresponding L.O. Frequency is 17.25 (GHz), and conversing intermediate frequency is 18.539 (GHz)-17.25 (GHz)=1.289 (GHz).
10. method as claimed in claim 6, it is characterized in that, step S4 also comprises that the intermediate frequency converting is imported into tuning demodulator (Tuner-Demodulator) end carries out frequency locking, and the transport stream (TS) that finally output meets Moving Picture Experts Group-2 offers CPU parsing, completes program searching work.
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| CN201410009715.3A CN103702165A (en) | 2014-01-09 | 2014-01-09 | Set top box with receiving and processing functions for KA waveband satellite signals |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105959779A (en) * | 2016-06-16 | 2016-09-21 | 珠海迈科智能科技股份有限公司 | Method and device for updating satellite frequency points in set top box |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1329403A (en) * | 2000-06-08 | 2002-01-02 | 汤姆森许可贸易公司 | Radio frequency transmitter and/or receiver |
| US20070018900A1 (en) * | 2003-09-10 | 2007-01-25 | Rao Sudhakar K | Multi-beam and multi-band antenna system for communication satellites |
| CN101252637A (en) * | 2008-03-05 | 2008-08-27 | 浪潮电子信息产业股份有限公司 | Combined digital set top boxes based on software radio |
| CN101682437A (en) * | 2007-05-29 | 2010-03-24 | 直视集团公司 | Integrated multi-sat LNB and frequency translation module |
| CN102904529A (en) * | 2011-07-28 | 2013-01-30 | Nxp股份有限公司 | Frequency down-converter |
-
2014
- 2014-01-09 CN CN201410009715.3A patent/CN103702165A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1329403A (en) * | 2000-06-08 | 2002-01-02 | 汤姆森许可贸易公司 | Radio frequency transmitter and/or receiver |
| US20070018900A1 (en) * | 2003-09-10 | 2007-01-25 | Rao Sudhakar K | Multi-beam and multi-band antenna system for communication satellites |
| CN101682437A (en) * | 2007-05-29 | 2010-03-24 | 直视集团公司 | Integrated multi-sat LNB and frequency translation module |
| CN101252637A (en) * | 2008-03-05 | 2008-08-27 | 浪潮电子信息产业股份有限公司 | Combined digital set top boxes based on software radio |
| CN102904529A (en) * | 2011-07-28 | 2013-01-30 | Nxp股份有限公司 | Frequency down-converter |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105959779A (en) * | 2016-06-16 | 2016-09-21 | 珠海迈科智能科技股份有限公司 | Method and device for updating satellite frequency points in set top box |
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Address after: 519000 Guangdong city in Zhuhai Province town of Red Bay Area Yongda Road No. 66 No. 2 building Applicant after: ZHUHAI MAIKE INTELLIGENT TECHNOLOGY CO., LTD. Address before: 519000 Guangdong city in Zhuhai Province town of Red Bay Area Yongda Road No. 66 Applicant before: Zhuhai Gotech Electronic Technology Co., Ltd. |
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