CN201039216Y - Digital multi-media broadcast receiving and transmission device based on quick card interface - Google Patents
Digital multi-media broadcast receiving and transmission device based on quick card interface Download PDFInfo
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- CN201039216Y CN201039216Y CNU2007200690591U CN200720069059U CN201039216Y CN 201039216 Y CN201039216 Y CN 201039216Y CN U2007200690591 U CNU2007200690591 U CN U2007200690591U CN 200720069059 U CN200720069059 U CN 200720069059U CN 201039216 Y CN201039216 Y CN 201039216Y
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Abstract
The utility model relates to a signal transferring and receiving device in the mobile communication, in particular to a digital multimedia radio receiving and transferring device based on the shortcut card interface, mainly solving the technical problem that the existing mobile apparatus with the shortcut card expansion interface cannot receive the digital multimedia radio. The device with the digital multimedia radio reception function is characterized in that the device includes a control module which controls the normal work of the whole device, and a demodulation module, a tune module, an interface module of the digital multimedia radio which are connected with the control module, wherein, the tune module and the demodulation module form the receiving part of the whole device; the interface module is a USB interface module which form the transferring part and is connected with the main apparatus digital sound frequency or multimedia radio receiver through the shortcut card interface. The utility model is mainly used for the reception and transference of the digital multimedia radio.
Description
Technical field: the utility model relates to a kind of moving communicating field signal transmission and receiving system, and particularly a kind of DMB based on quick card (Express Card) interface receives and transmitting device.
Background technology: digital audio broadcasting (DAB, Digital Audio Broadcasting) and DMB (DMB, Digital Multimedia Broadcasting) technology is all to adopt the brand-new broadcast system of digital processing from the collection of program, service, editing to transmission, transmission and the reception of signal, utilizes the broadcast technology of new generation of advanced digital image compression technology, digital signal error correction coding, digital signal modulation technique development efficiently.Contrast traditional analog television broadcast and AM/FM broadcasting, DMB has the following advantages:
One, image transmission quality height: signal is in transmission course, and the clutter amplitude is no more than rated value, and by shaping, digital model can be restored fully.Even overrate causes error code, also can utilize the code correction technology, correct at receiving terminal.So can keep the signal to noise ratio of image and data-signal constant in transmission, the image of receiving terminal keeps consistent with transmitting terminal substantially with data signal quality;
Two, many information, multi-functional: allow the signal of different medium (literal, data, sound, image), different brackets (HDTV, SDTV, LDTV), different systems (different aspect ratios, different channel number) in same channel, to transmit, receive with same receiver, realize the multiple data service of telling;
Three, equipment is reliable, and safeguard simple: digital signal is not subjected to power-supply fluctuation, device effect of nonlinear, can keep stablizing, reliably.Simultaneously, digital device does not need to regulate, and safeguards simple, easy to use;
Four, save transmitted power, wide coverage is in identical covering service area, the average power that the digital multimedia transmitter is required, peak power than analog transmissions equipment is low, so the coverage of digital multimedia transmitter is than big several times of the analog machine coverage of equal-wattage;
Five, being easy to realization condition receives: digital signal is encrypted easily, scrambling, helps information security, is convenient to realize pay TV.
Therefore, along with the development of digital information technology, digital audio broadcasting and DMB replace traditional AM/FM broadcasting and television broadcasting just gradually, and the data, services of how suitable broadcast mode is provided.
The structure diagram of digital audio or multimedia broadcast receiver as shown in Figure 1.In this receiver, signal receives, channel processing module comprises tuning (Tuner) module and demodulation (Demodulator) module, is responsible for base band data is made in high-frequency signal conversion, demodulation; Message source process module is responsible for base band data is carried out demultiplexing, descrambling and decoding processing, is reduced into the data that application program can be handled.Application module is responsible for using data to realize concrete application such as the broadcast of audio/video or the realization of data service.
Different according to channel modulation mode and data multiplex, compression, organizational form have been released numerous digital television broadcasting standards both at home and abroad.DVB-T/H is abroad arranged; DAB, DAB-IP, T-DMB; ISDB-T; Standards such as MediaFlo; The domestic DMB-TH that also released; TMMB; Numerous standards such as CMMB.
Quick card (Express Card) interface specification is a kind of new plug and play I/O calliper model.2003, Intel on the IDF Fall2003 that the U.S. holds formally next generation PC card called after Express Card; Developed quick card standard by the PCMCIA tissue together with PCMCIA member company.Block fast that not only volume is tiny, and transmission speed is faster, is suitable for moving or the desktop plateform system.The design of quick card has been adopted the most fast, and PCI Express and USB are that transport interface makes quick card can be directly connected to the core of PC chipset in the most unobstructed mode, support also has the ability of hot plug and power management, and the user need not see through traditional hardware control and other software again come starting drive.
The size standard of quick card module has two kinds: one, 34mm 75mm wide and lower limit length grows (ExpressCard/34); Two, for cooperating some specific function extended technology (as: smart card, CF adapter and digital television card etc.), defined alternative size and extended to 54mm wide (ExpressCard/54).As for thickness.But the 5mm specification that two kinds of quick calliper lattice have all been followed TypeII PC Card on length than PC Card short and small 10.6mm.
Because the volume of quick card is little, the transport interface definition is flexible, cost is low, not only under the PC environment, also has applicability in mobile device.
A lot of digital multimedia broadcast receiving apparatus by USB interface, SD I/O interface or pcmcia interface standard have appearred now.PC Card interface is replaced to quick card on new at present computer of releasing and the notebook computer.
Along with popularizing of digital television broadcasting, numerous portable equipments comprise that notebook computer (Laptop PC), hand-hold multimedia player (PMP), PDA(Personal Digital Assistant), smart mobile phone (Smart Phone), MP3 player, MP4 player etc. have on the equipment of quick card, if the playing function of DMB can be provided, will bring huge convenience and experience to the user.
The utility model content: the purpose of this utility model provides a kind of digital multimedia broadcasting signal of quick card that uses and receives and transmitting device.Make the user when use has the mobile device of quick card expansion interface, can obtain the service that DMB brings by this device.Mainly solve the technical problem that the mobile device have quick card expansion interface at present can't receiving digital multimedia broadcastinging.
The technical solution of the utility model is: a kind of DMB based on quick card receives and transmitting device, comprising:
The control module of a whole device normal operation of control, it is the core of whole device; And demodulation module, tuner module, the interface module of the DMB that links to each other with this control module.
Tuner module and demodulation module shape constitute the receiving unit of whole device, and described interface module is a usb interface module, and usb interface module constitutes hop.
Control module receives the instruction of mobile device to this device by usb interface module, and then other modules are controlled, and coordinates to finish from signal to receive transfer of data and other work.
Usb interface module is finished the transfer of data of carrying out to main equipment (Host) and is responded the command request of main equipment to this device that is slave unit (Client) by quick card interface under the control of control module.
Whole device is itself to be powered by quick card.
Further, described usb interface module also can be a PCI Express interface module;
Further, described control module and usb interface module are assembled in a module or the chip;
Further, described tuner module and demodulation module are assembled in a module or the chip;
Further, the module of described usb interface module or USB module and control module merging formation can be assembled in a module or the chip with demodulation module;
Further, the module of described PCI Express interface module or PCI Express interface module and control module merging formation can be assembled in a module or the chip with demodulation module;
Further, described control module, demodulation module, tuner module and usb interface module or PCIExpress interface module can be assembled in a module or the chip.
Further, based on the DMB standard of DAB (such as T-DMB, T-MMB, DAB-IP etc.) in the device, also can comprise an audio processing modules, under the control of above-mentioned control module, demodulation module sends to audio processing modules with DAB voice data (MSC stream mode audio frequency), audio processing modules to signal decode, analog-to-digital conversion, and output to outside sound-producing device.
Further, above-mentioned DAB audio frequency also can transfer to main equipment via quick card interface, carries out Audio Processing by main equipment.Main equipment by quick card interface receive said apparatus as slave unit with USB or PCI Express transport interface, through USB or PCI Express control module, (content of transmission can comprise the data of transmission: digital audio, digital video and sound accompaniment, and other data, services), through message source process module and application module data-signal being carried out respective handling then finally plays on display module.
Main equipment is by quick card interface simultaneously, with USB or PCI Express transport interface control command is sent to said apparatus, realize control requirements such as control command processing, tuning control, zero-signal detection, Synchronization Control, audio frequency control, subchannel selection.
The beneficial effects of the utility model are: the DMB with quick card interface described in the utility model receives and transmitting device, in the structure of ordinary numbers multi-media broadcasting device, introduce quick card interface, make that existing numerous terminal equipment that has quick card interface can be by the support of this connection interface realization to digital MBMS service; Device of the present invention in addition not only can carry out the reception and the transmission of DMB, also can on this device, play AM/FM and digital multimedia audio broadcasting in real time simultaneously, reduce the resource consumption of main equipment, adapted to the reasonable assignment of task under the mobile device limited resources.
Description of drawings:
Fig. 1 is the structure diagram of existing digital audio or multimedia broadcast receiver
Fig. 2 is that the utility model is connected block diagram with digital audio or multimedia broadcast receiver structural representation
Embodiment: with reference to Fig. 2, embodiment 1, and a kind of DMB based on quick card receives and transmitting device, comprising:
The control module of a whole device normal operation of control, it is the core of whole device; And the demodulation module of the DMB that links to each other with this control module, tuner module (being the radio-frequency module of Fig. 2), usb interface module.
Tuner module and demodulation module shape constitute the receiving unit of whole device, and usb interface module constitutes hop.
Control module receives the instruction of mobile device to this device by usb interface module, and then other modules are controlled, and coordinates to finish from signal to receive transfer of data and other work.
Usb interface module is finished the transfer of data of carrying out to main equipment digital audio or multimedia broadcast receiver (Host) and the response main equipment command request to this device that is slave unit (Client) by quick card interface under the control of control module.
Whole device is itself to be powered by quick card.
Embodiment 2, and usb interface module is substituted by PCI Express interface module, and all the other are identical with embodiment 1.
Embodiment 3, and described control module and usb interface module are assembled in a module or the chip, and all the other are identical with embodiment 1.
Embodiment 4, and described tuner module and demodulation module are assembled in a module or the chip, and all the other are identical with embodiment 1.
Embodiment 5, and described usb interface module or USB module and control module merge the module that forms and can be assembled in a module or the chip with demodulation module, and all the other are identical with embodiment 1.
Embodiment 6, and described PCI Express interface module or PCI Express interface module and control module merge the module that forms and can be assembled in a module or the chip with demodulation module, and all the other are identical with embodiment 1.
Embodiment 7, and described control module, demodulation module, tuner module and usb interface module or PCI Express interface module can be assembled in a module or the chip, and all the other are identical with embodiment 1.
Embodiment 8, install descrambling module additional between control module and demodulation module, and all the other are identical with embodiment 1.
Embodiment 9, based on the DMB standard of DAB (such as T-DMB, T-MMB, DAB-IP etc.) in the device, also can comprise an audio processing modules, under the control of above-mentioned control module, demodulation module sends to audio processing modules with DAB voice data (MSC stream mode audio frequency), audio processing modules to signal decode, analog-to-digital conversion, and output to outside sound-producing device, all the other are identical with embodiment 1.
Embodiment 10, and above-mentioned DAB audio frequency also can transfer to main equipment via quick card interface, carries out Audio Processing by main equipment.Main equipment by quick card interface receive said apparatus as slave unit with USB or PCI Express transport interface, through USB or PCI Express control module, (content of transmission can comprise the data of transmission: digital audio, digital video and sound accompaniment, and other data, services), through message source process module and application module data-signal being carried out respective handling then finally plays on display module.Main equipment is by quick card interface simultaneously, with USB or PCI Express transport interface control command is sent to said apparatus, realize control requirements such as control command processing, tuning control, zero-signal detection, Synchronization Control, audio frequency control, subchannel selection.
Among the embodiment, control module can be selected common 8 single-chip microcomputers of 51 types for use; The USB interface chip can adopt the PDIUSBD12 of Philips company; The tuned radio-frequency module adopts the ITD3020 of Integrant company; Demodulation module is then selected the PN3020 of PnpNetwork company for use; Descrambling module can be selected the scheme of CoreTrust company or irdeto company for use; Audio processing modules then can adopt the WM87xx series of wolfson company.
Claims (10)
1. the DMB based on quick card receives and transmitting device, and it is characterized in that: this device comprises:
The control module of a whole device normal operation of control, and demodulation module, tuner module, the interface module of the DMB that links to each other with this control module, tuner module and demodulation module shape constitute the receiving unit of whole device, described interface module is a usb interface module, usb interface module constitutes hop, and usb interface module is connected with main equipment digital audio or multimedia broadcast receiver by quick card.
2. a kind of DMB based on quick card according to claim 1 receives and transmitting device, and it is characterized in that: this device is connect by quick card.
3. a kind of DMB based on quick card according to claim 1 receives and transmitting device, it is characterized in that: between control module and demodulation module, install descrambling module additional, also comprise an audio processing modules, its input termination control module, the sound-producing device of output termination outside, demodulation module sends to audio processing modules with the DAB voice data, audio processing modules to signal decode, analog-to-digital conversion, and output to sound-producing device.
4. a kind of DMB based on quick card according to claim 1 receives and transmitting device, and it is characterized in that: described interface module is a PCI Express interface module.
5. a kind of DMB based on quick card according to claim 1 receives and transmitting device, and it is characterized in that: described control module and usb interface module are assembled in a module or the chip.
6. a kind of DMB based on quick card according to claim 1 receives and transmitting device, and it is characterized in that: described tuner module and demodulation module are assembled in a module or the chip.
7. a kind of DMB based on quick card according to claim 1 receives and transmitting device, and it is characterized in that: described usb interface module or USB module and control module merge the module and the demodulation module that form and be assembled in a module or the chip.
8. a kind of DMB based on quick card according to claim 4 receives and transmitting device, and it is characterized in that: described PCI Express interface module or PCI Express interface module and control module merge the module and the demodulation module that form and be assembled in a module or the chip.
9. a kind of DMB based on quick card according to claim 1 receives and transmitting device, and it is characterized in that: described control module, demodulation module, tuner module and usb interface module are assembled in a module or the chip.
10. a kind of DMB based on quick card according to claim 4 receives and transmitting device, and it is characterized in that: described control module, demodulation module, tuner module and PCI Express interface module are assembled in a module or the chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200690591U CN201039216Y (en) | 2007-04-18 | 2007-04-18 | Digital multi-media broadcast receiving and transmission device based on quick card interface |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200690591U CN201039216Y (en) | 2007-04-18 | 2007-04-18 | Digital multi-media broadcast receiving and transmission device based on quick card interface |
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| CN201039216Y true CN201039216Y (en) | 2008-03-19 |
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| CNU2007200690591U Expired - Fee Related CN201039216Y (en) | 2007-04-18 | 2007-04-18 | Digital multi-media broadcast receiving and transmission device based on quick card interface |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101340253B (en) * | 2008-08-07 | 2010-05-12 | 北京创毅视讯科技有限公司 | Mobile multimedia broadcast receiving apparatus, receiving card and receiving terminal |
| CN101908901A (en) * | 2009-06-04 | 2010-12-08 | 启碁科技股份有限公司 | Signal transmission interface and digital broadcast receiving device |
-
2007
- 2007-04-18 CN CNU2007200690591U patent/CN201039216Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101340253B (en) * | 2008-08-07 | 2010-05-12 | 北京创毅视讯科技有限公司 | Mobile multimedia broadcast receiving apparatus, receiving card and receiving terminal |
| CN101908901A (en) * | 2009-06-04 | 2010-12-08 | 启碁科技股份有限公司 | Signal transmission interface and digital broadcast receiving device |
| CN101908901B (en) * | 2009-06-04 | 2013-04-17 | 启碁科技股份有限公司 | Signal transmission interface and digital broadcast receiving device |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080319 Termination date: 20100418 |