CN105450952A - FM (Frequency Modulation), CDR (China Digital Radio) and DTMB (Digital Television Terrestrial Multimedia Broadcasting) receiving terminal and implementing method thereof - Google Patents
FM (Frequency Modulation), CDR (China Digital Radio) and DTMB (Digital Television Terrestrial Multimedia Broadcasting) receiving terminal and implementing method thereof Download PDFInfo
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- CN105450952A CN105450952A CN201510923659.9A CN201510923659A CN105450952A CN 105450952 A CN105450952 A CN 105450952A CN 201510923659 A CN201510923659 A CN 201510923659A CN 105450952 A CN105450952 A CN 105450952A
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Abstract
The invention provides a terminal with frequency modulation (FM), China digital radio (CDR) and digital television terrestrial multimedia broadcasting (DTMB) receiving functions. The terminal comprises a first antenna, a second antenna, a first tuning module, a second tuning module, an FM/CDR demodulation module, a DTMB demodulation module, a storage module, a decoding driving module, a touch screen input and output module and an audio input and output module. The terminal is provided with two wireless signal receiving and demodulating channels, and meanwhile, is provided with common decoding unit, storage unit, touch screen input and output module and audio input and output module. According to the terminal provided by the invention, by integrating three broadcasting receiving functions onto one terminal, FM/CDR/DTMB signal receiving can be controlled to be selected in various modes, so that different requirements of a user in different places and at different time can be met.
Description
Technical field
The present invention relates to communication broadcast, particularly relate to a kind of terminal and its implementation of possessing FM, CDR and DTMB receiving function.
Background technology
Chinese Digital audio broadcasting (ChinaDigitalRadio, CDR) with digital television ground broadcast transmission system (DigitalTelevisionTerrestrialMultimediaBroadcasting, DTMB) the own standard of China is all, wherein, CDR is Chinese Digital Audio Broadcasting standard, DTMB is Chinese ground digital television broadcast standard, and frequency modulation (FM) is Audio Broadcasting standard all very ripe both at home and abroad.These three kinds of standards are all received radio signals by antenna, and CDR broadcast adopts the frequency range identical with FM, by these three function i ntegration on a receiving terminal, can meet the different demands of user in different occasion, time.
Summary of the invention
The object of this invention is to provide a kind of terminal possessing FM, CDR and DTMB receiving function and its implementation that can overcome above-mentioned defect.
In first aspect, the invention provides a kind of terminal possessing the receiving function of modulating FM, Chinese Digital audio broadcasting CDR and Chinese ground TV broadcast DTMB, comprise the first antenna, the second antenna, the first tuner module, second tune module, FM/CDR demodulation module, DTMB demodulation module, memory module and decoding driver module, wherein: described first antenna is connected to described first tuner module, for selecting to receive FM/CDR signal and by the FM/CDR Signal transmissions that receives to described first tuner module; Described first tuner module is connected to described FM/CDR demodulation module, for carrying out tuning to described FM/CDR signal, then by the FM/CDR Signal transmissions after tuning to described FM/CDR demodulation module; Described second antenna is connected to described second tune module, for selecting to receive DTMB signal and by the DTMB Signal transmissions that receives to described second tune module; Described second tune model calling, to described DTMB demodulation module, carries out tuning for the DTMB signal received described second antenna, then by the DTMB Signal transmissions after tuning to described DTMB demodulation module; Described FM/CDR demodulation module and described DTMB demodulation module are also connected to described decoding driver module, be respectively used to carry out demodulation to the FM/CDR signal after tuning or DTMB signal, more respectively by the FM/CDR signal after demodulation or DTMB Signal transmissions to described decoding driver module; Described decoding driver module exports after decoding to the FM/CDR/DTMB signal after demodulation.
Preferably, described terminal also comprises: touch-screen input/output module, it is connected with described decoding driver module, for by decoded FM/CDR/DTMB Signal aspects to user, and the touch input receiving user receives one of FM/CDR/DTMB signal for terminal for selecting.
Preferably, described terminal also comprises: audio frequency input/output module, it is connected with described decoding driver module, and for decoded FM/CDR/DTMB signal is exported to user, and the phonetic entry receiving user receives one of FM/CDR/DTMB signal for terminal for selecting.
Preferably, described terminal also comprises: memory module, and it is connected with described decoding driver module, for storing intermediate data in decode procedure and decoded FM/CDR/DTMB signal.
Preferably, described memory module is NorFlash, TF card, one of NandFlash, DDR2.
Preferably, described terminal also comprises: remote control module and infrared receiver module, wherein: described remote control module by infrared ray to terminal transmission code signal; Described infrared receiving module receives described code signal, and this code signal receives one of FM/CDR/DTMB signal for selecting after demodulating and decoding.
In second aspect, the invention provides a kind of method receiving modulating FM, Chinese Digital audio broadcasting CDR and Chinese ground TV broadcast DTMB signal, comprise: receive one of FM/CDR/DTMB signal by two sky line options, one of them antenna receives FM/CDR signal, and another antenna receives DTMB signal; Carry out tuning to the FM/CDR signal received or DTMB signal respectively by two tuner modules, one of them tuner module carries out tuning to the FM/CDR signal received, and another tuner module carries out tuning to the DTMB signal received; Carry out demodulation to the FM/CDR signal after tuning or DTMB signal respectively by two demodulation modules, one of them demodulation module carries out demodulation to the FM/CDR signal after tuning, and another demodulation module carries out tuning to the DTMB signal after tuning; By the decoding driver module shared, the FM/CDR/DTMB signal after demodulation is decoded.
Preferably, described method also comprises: by touch-screen input/output module by decoded FM/CDR/DTMB Signal aspects to user; Select to receive one of FM/CDR/DTMB signal by the touch input of user in described touch-screen input/output module.
Preferably, described method also comprises: by audio frequency input/output module, decoded FM/CDR/DTMB signal is exported to user; Select to receive one of FM/CDR/DTMB signal by the phonetic entry of user in described audio frequency input/output module.
Preferably, described method also comprises: by remote control module via infrared ray to terminal transmission code signal; Receive described code signal by infrared receiving module, this code signal receives one of FM/CDR/DTMB signal for selecting after demodulating and decoding.
Terminal of the present invention has possessed the receiving function of FM, CDR and DTMB simultaneously, and user can facilitate and freely switch between three kinds of functions, can meet the different demands of user at different occasion, different time.
Accompanying drawing explanation
Fig. 1 is the functional block diagram possessing the terminal of FM, CDR and DTMB receiving function according to the embodiment of the present invention;
Fig. 2 is the flow chart possessing the implementation method of the terminal of FM, CDR and DTMB receiving function according to the embodiment of the present invention.
Embodiment
Below by drawings and Examples, technical scheme of the present invention is described in further detail.
Fig. 1 is the functional block diagram possessing the terminal of FM, CDR and DTMB receiving function according to the embodiment of the present invention.
As shown in Figure 1, this terminal comprises the first antenna, the second antenna, the first tuner module, second tune module, FM/CDR demodulation module, DTMB demodulation module, memory module, decoding driver module, touch-screen input/output module and audio frequency input/output module.
As can be seen from Figure 1, what this terminal had two wireless signals receives and demodulates passage, has shared decoding unit, memory cell, touch-screen input/output module and audio frequency input/output module simultaneously.
First antenna is connected to the first tuner module, for select to receive FM or CDR wireless signal and by the transmission of wireless signals that receives to the first tuner module.First tuner module is also connected to FM/CDR demodulation module, carries out tuning for the wireless signal received by the first antenna, then by the transmission of wireless signals after tuning to FM/CDR demodulation module.FM/CDR demodulation module is also connected to decoding driver module, for carrying out demodulation to the broadcast singal after tuning, and by the Signal transmissions after demodulation to decoding driver module.
Second antenna is connected to second tune module, for select to receive DTMB wireless signal and by the transmission of wireless signals that receives to second tune module.Second tune module is also connected to DTMB demodulation module, carries out tuning for the wireless signal received by the second antenna, then by the transmission of wireless signals after tuning to DTMB demodulation module.Second demodulation module is also connected to decoding driver module, for carrying out demodulation to the broadcast singal after tuning, and by the Signal transmissions after demodulation to decoding driver module.
Decoding driver module is connected with audio frequency input/output module with memory module, touch-screen input/output module respectively, for decoding to the signal after demodulation and carrying out display screen driving to display module, then decoded audio signal is exported to user by audio frequency input/output module, or decoded vision signal is presented in touch-screen input/output module.
Memory module can adopt various form, include but not limited to NorFlash, TF card, NandFlash, DDR2, it is connected with decoding driver module, after storing demodulation, the related data of the FM/CDR/DTMB needed for decoder, these data can be such as audio-frequency multiplex layer data, decoding layer frame packed data, decoding intermediate data, PCM data/video/audio etc. after decoding.
Should be appreciated that this terminal can also comprise remote control module and infrared receiver module, wherein: described remote control module by infrared ray to terminal transmission code signal; Described infrared receiving module receives described code signal, and this code signal receives one of FM/CDR/DTMB signal for terminal for selecting after demodulating and decoding.
Fig. 2 is the flow chart possessing the implementation method of the terminal of FM, CDR and DTMB receiving function according to the embodiment of the present invention.
In step 201, receive FM/CDR signal or DTMB signal respectively by antenna.At this, by two independently antenna receive radio broadcasting signal, one of them antenna is for receiving FM/CDR signal, and another antenna is for receiving DTMB signal.
In step 202, carry out tuning to the FM/CDR signal received or DTMB signal respectively.At this, by two independently tuner module carry out tuning work, one of them tuner module be used for carry out tuning to the FM/CDR signal received, another tuner module be used for carry out tuning to the DTMB signal received.
In step 203, respectively demodulation is carried out to the FM/CDR signal after tuning or DTMB signal.At this, by two independently demodulation module carry out demodulation work, one of them demodulation module is used for carrying out demodulation to the FM/CDR signal after tuning, and another demodulation module is used for carrying out tuning to the DTMB signal after tuning.
In step 204, the FM/CDR/DTMB signal after demodulation is decoded.At this, a common decoding driver module can be adopted to decode to the FM/CDR/DTMB signal after demodulation.Decoding driver module can read required data and drive to help decoding and display screen from memory, and the data after the intermediate data in decode procedure and decoding terminate also can be stored in memory.These above-mentioned data such as have audio-frequency multiplex layer data, decoding layer frame packed data, decoding intermediate data, PCM data etc. after decoding.
In step 205, by decoded FM/CDR/DTMB Signal aspects to user.Such as, by display screen or loudspeaker, video or audio signal can be presented to user by decoded FM/CDR/DTMB signal.
User can switch in several ways between these three kinds of functions of reception FM, CDR or DTMB signal.Such as, can be inputted by touch-screen input/output module, controlled by the phonetic entry of audio frequency input/output module, selected by the button (not shown) in terminal, even can carry out selection function by a remote control module.Such as, this terminal also comprises infrared receiver module, remote controller/remote controller module can by the key information of coding by infrared ray to terminal transmission, infrared receiving module receives infrared signal, and decoding demodulation was carried out above-mentioned selection afterwards and controlled.Should be appreciated that and will realize this function, infrared receiving module should be connected with one of two demodulators in described decoding driver module and an extra demodulation module or Fig. 1.
Terminal of the present invention can realize in a variety of manners, can be such as the portable terminal that can carried with by user or dress, and also can be car-mounted terminal etc.Terminal of the present invention by by three function i ntegration on a station terminal, the different demands of user in different occasion, time can be met.
Illustrate, the implication of the symbol "/" in present specification refer to "or" or " with ".
Professional should recognize further, in conjunction with unit and the algorithm steps of each example of embodiment disclosed herein description, can realize with electronic hardware, computer software or the combination of the two, in order to the interchangeability of hardware and software is clearly described, generally describe composition and the step of each example in the above description according to function.These functions perform with hardware or software mode actually, depend on application-specific and the design constraint of technical scheme.Professional and technical personnel can use distinct methods to realize described function to each specifically should being used for, but this realization should not thought and exceeds scope of the present invention.
The software module that the method described in conjunction with embodiment disclosed herein or the step of algorithm can use hardware, processor to perform, or the combination of the two is implemented.Software module can be placed in the storage medium of other form any known in random asccess memory (RAM), internal memory, read-only memory (ROM), electrically programmable ROM, electrically erasable ROM, register, hard disk, moveable magnetic disc, CD-ROM or technical field.
Above-described embodiment, further describes object of the present invention, technical scheme and beneficial effect.Be understood that; the foregoing is only the specific embodiment of the present invention, the protection range be not intended to limit the present invention, within the spirit and principles in the present invention all; any amendment of making, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. one kind possesses the terminal of the receiving function of modulating FM, Chinese Digital audio broadcasting CDR and Chinese ground TV broadcast DTMB, comprise the first antenna, the second antenna, the first tuner module, second tune module, FM/CDR demodulation module, DTMB demodulation module, memory module and decoding driver module, wherein:
Described first antenna is connected to described first tuner module, for selecting to receive FM/CDR signal and by the FM/CDR Signal transmissions that receives to described first tuner module;
Described first tuner module is connected to described FM/CDR demodulation module, for carrying out tuning to described FM/CDR signal, then by the FM/CDR Signal transmissions after tuning to described FM/CDR demodulation module;
Described second antenna is connected to described second tune module, for selecting to receive DTMB signal and by the DTMB Signal transmissions that receives to described second tune module;
Described second tune model calling, to described DTMB demodulation module, carries out tuning for the DTMB signal received described second antenna, then by the DTMB Signal transmissions after tuning to described DTMB demodulation module;
Described FM/CDR demodulation module and described DTMB demodulation module are also connected to described decoding driver module, be respectively used to carry out demodulation to the FM/CDR signal after tuning or DTMB signal, more respectively by the FM/CDR signal after demodulation or DTMB Signal transmissions to described decoding driver module;
Described decoding driver module exports after decoding to the FM/CDR/DTMB signal after demodulation.
2. terminal according to claim 1, also comprises:
Touch-screen input/output module, it is connected with described decoding driver module, for by decoded FM/CDR/DTMB Signal aspects to user, and the touch input receiving user receives one of FM/CDR/DTMB signal for terminal for selecting.
3. terminal according to claim 1, also comprises:
Audio frequency input/output module, it is connected with described decoding driver module, and for decoded FM/CDR/DTMB signal is exported to user, and the phonetic entry receiving user receives one of FM/CDR/DTMB signal for terminal for selecting.
4. terminal according to claim 1, also comprises:
Memory module, it is connected with described decoding driver module, for storing intermediate data in decode procedure and decoded FM/CDR/DTMB signal.
5. terminal according to claim 4, wherein, described memory module is NorFlash, TF card, one of NandFlash, DDR2.
6. terminal according to claim 1, also comprises remote control module and infrared receiver module, wherein:
Described remote control module by infrared ray to terminal transmission code signal;
Described infrared receiving module receives described code signal, and this code signal receives one of FM/CDR/DTMB signal for terminal for selecting after demodulating and decoding.
7. receive a method for modulating FM, Chinese Digital audio broadcasting CDR and Chinese ground TV broadcast DTMB signal, comprising:
Receive one of FM/CDR/DTMB signal by two sky line options, one of them antenna receives FM/CDR signal, and another antenna receives DTMB signal;
Carry out tuning to the FM/CDR signal received or DTMB signal respectively by two tuner modules, one of them tuner module carries out tuning to the FM/CDR signal received, and another tuner module carries out tuning to the DTMB signal received;
Carry out demodulation to the FM/CDR signal after tuning or DTMB signal respectively by two demodulation modules, one of them demodulation module carries out demodulation to the FM/CDR signal after tuning, and another demodulation module carries out tuning to the DTMB signal after tuning;
By the decoding driver module shared, the FM/CDR/DTMB signal after demodulation is decoded.
8. method according to claim 7, also comprises:
By touch-screen input/output module by decoded FM/CDR/DTMB Signal aspects to user;
Select to receive one of FM/CDR/DTMB signal by the touch input of user in described touch-screen input/output module.
9. method according to claim 7, also comprises:
By audio frequency input/output module, decoded FM/CDR/DTMB signal is exported to user;
Select to receive one of FM/CDR/DTMB signal by the phonetic entry of user in described audio frequency input/output module.
10. method according to claim 7, also comprises:
By remote control module via infrared ray to terminal transmission code signal;
Receive described code signal by infrared receiving module, this code signal receives one of FM/CDR/DTMB signal for selecting after demodulating and decoding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510923659.9A CN105450952A (en) | 2015-12-14 | 2015-12-14 | FM (Frequency Modulation), CDR (China Digital Radio) and DTMB (Digital Television Terrestrial Multimedia Broadcasting) receiving terminal and implementing method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510923659.9A CN105450952A (en) | 2015-12-14 | 2015-12-14 | FM (Frequency Modulation), CDR (China Digital Radio) and DTMB (Digital Television Terrestrial Multimedia Broadcasting) receiving terminal and implementing method thereof |
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| CN105450952A true CN105450952A (en) | 2016-03-30 |
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| CN201510923659.9A Pending CN105450952A (en) | 2015-12-14 | 2015-12-14 | FM (Frequency Modulation), CDR (China Digital Radio) and DTMB (Digital Television Terrestrial Multimedia Broadcasting) receiving terminal and implementing method thereof |
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| CN105915306A (en) * | 2016-06-14 | 2016-08-31 | 北京海尔集成电路设计有限公司 | China digital radio CDR receiving terminal and realization method of the receiving terminal |
| CN107070470A (en) * | 2017-03-03 | 2017-08-18 | 北京海尔集成电路设计有限公司 | A kind of CDR data output circuits and data output method |
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Application publication date: 20160330 |