CN201388207Y - Data card for receiving broadcast signals - Google Patents
Data card for receiving broadcast signals Download PDFInfo
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- CN201388207Y CN201388207Y CN200820134230U CN200820134230U CN201388207Y CN 201388207 Y CN201388207 Y CN 201388207Y CN 200820134230 U CN200820134230 U CN 200820134230U CN 200820134230 U CN200820134230 U CN 200820134230U CN 201388207 Y CN201388207 Y CN 201388207Y
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Abstract
The utility model discloses a data card for receiving broadcast signals, which can conveniently receive the broadcast signals. The data card comprises a multimedia receiving device receiving mobile multimedia broadcast signals, a network broadcast receiving device receiving network broadcast signals, a data storage chip storing the start-up procedures and initialization parameters of the multimedia receiving device and the network broadcast receiving device, a microprocessor controlling the working state and the work schedule of the multimedia receiving device, and a power circuit supplying power to the whole data card. The utility model has the characteristics of mobile equipment, thereby meeting the requirements of users on watching TV and listening to radio broadcast in a mobile environment.
Description
Technical field
The utility model relates to a kind of communication equipment, relates in particular to a kind of data card that inserts broadcast singal.
Background technology
At present, the method that the notebook computer user watched, listened to TV, broadcasting mainly contains two kinds: a kind of is to watch or listen to TV, broadcast program by broadband network, as Web TV (IPTV) etc.; Another kind is to utilize the bimodulus TV card to receive anolog TV signals or limited digital television signal, plays on personal computer.
Fig. 1 is used to illustrate aforementioned first method be the system composition schematic diagram of personal computer user in the prior art by ADSL (Asymmetric Digital Subscriber Line) (ADSL) loading IPTV.Insert domestic consumer's phone service wire, through splitter 110 narrow band voice signal and baseband data signals are separated earlier, narrow band voice signal is directly delivered to phone 120, and baseband data signals is imported set-top box 140 into through twin-channel ADSL Modem (Modem) 130, and digital signal is delivered to television set 150 after processing such as set-top box 140 decoding decompress(ion)s.Broadcasting data signal then inserts personal computer 160 by network interface card behind Modem 130, playing network broadcasting then.Receiving network broadcast then needs to arrive specified web downloading and playing software by network, arrives specific website then and downloads program of radio station.As can be seen, this technology need be built complicated perimeter network equipment, obtains data message by the Internet approach.This not only increases hardware cost and network rate for the user, and the simultaneity factor complexity can't satisfy simply and easily that the user televiews, the demand of broadcast listening in mobile environment.
With regard to the IPTV technology itself, this technology is to be IP bag with video, audio/video program or conversion of signals, transmits or be distributed to different user then.Therefore this technology is to network bandwidth requirement harshness (at least more than the 1M), and restricted to number of network users, increase as number of users, can cause data transmission rate to descend, phenomenons such as the delay of generation picture, mosaic or voice are interrupted directly influence the user and watch, listen to experience.And online broadcast listening except exist with broadband network TV contention Internet resources, most online program is not real-time, but pre-edit, the program that records, can not satisfy the demand of the real-time broadcast listening program of user like this.
Fig. 2 is used to illustrate aforementioned second method be the system configuration schematic diagram of bimodulus TV card in the prior art.After the user delivers to TV card 220 with cable TV signal by coaxial cable interface 210, if what receive is anolog TV signals, then earlier by analog signal processing circuit 222 with analog signal amplify, processing such as filtering, the anolog TV signals that obtain amplifying, vision signal decoder module 224 is converted to digital television signal with anolog TV signals then, and be sent to interface circuit 226 (as USB interface), deliver on the personal computer 230 by network interface card at last; If what receive is digital catv signal, then need not to carry out the analog-to-digital conversion of signal, directly deliver to vision signal decoder module 224 and handle, and be sent to interface circuit 226, deliver at last on the personal computer 230.And the approach of broadcast listening is identical with method one,, arrives specific website then and downloads program of radio station to specified web downloading and playing software by network.
Though method two is compared with method one, system configuration is comparatively simple, and this method still needs to take Internet resources to realize the demand of broadcast listening program.In addition, the various places standard difference of present cable digital TV, this must cause using restricted.
The utility model content
Technical problem to be solved in the utility model is to be to provide a kind of ancillary equipment simple data card, with the convenient broadcast singal that inserts.
In order to solve the problems of the technologies described above, the utility model provides a kind of data card that inserts broadcast singal, is positioned at the multimedia terminal, comprises multimedia receiving system, Web broadcast receiving system, pin-saving chip, microprocessor and power circuit, wherein:
The multimedia receiving system receives mobile multimedia broadcast signal, with described multimedia broadcast signal demodulation, decoding, obtains multimedia video signal and multimedia audio signal;
The Web broadcast receiving system receives the Web broadcast signal, with the demodulation of described Web broadcast signal, obtains broadcast voice signal;
Microprocessor is connected with described multimedia receiving system, Web broadcast receiving system and described multimedia terminal;
Pin-saving chip links to each other with described multimedia receiving system and Web broadcast receiving system; And
Power circuit links to each other with described multimedia receiving system, Web broadcast receiving system, microprocessor and pin-saving chip, is described multimedia receiving system, Web broadcast receiving system, microprocessor and the power supply of storage core by external power source.
In the aforesaid data card, described multimedia receiving system can comprise S-band antenna, S-band antenna-matching circuit, S-band low noise amplifier, filter, demodulation chip and multimedia reference clock, wherein:
The S-band antenna receives the S-band broadcast singal;
The S-band antenna-matching circuit links to each other with described S-band antenna, and described S-band broadcast singal is mated, and reduces link load;
The S-band low noise amplifier links to each other with described S-band antenna-matching circuit, and described S-band broadcast singal is amplified, and improves the carrier-to-noise ratio of described S-band broadcast singal;
Filter links to each other with described S-band low noise amplifier, and the described S-band broadcast singal after amplifying is carried out filtering;
Demodulation chip links to each other with described filter, and described S-band broadcast singal is carried out demodulation, decoding, obtains S-band multimedia audio signal and multimedia video signal; And
The multimedia reference clock links to each other with described demodulation chip, for described demodulation chip provides local clock.
Further, described multimedia receiving system may further include shf band antenna and shf band match circuit, wherein:
The shf band antenna receives the shf band broadcast singal;
The shf band match circuit links to each other with described shf band antenna, and described shf band broadcast singal is mated, and reduces link load;
Described demodulation chip further links to each other with described shf band match circuit, and described shf band broadcast singal is carried out demodulation, decoding, obtains shf band multimedia audio signal and multimedia video signal.
And described demodulation chip can link to each other with described microprocessor by the I2C interface, receives the control of described microprocessor to described operating state and work schedule.
And described demodulation chip can link to each other with described pin-saving chip by serial peripheral interface.
In the aforesaid data card, described Web broadcast receiving system can comprise FM reception antenna, frequency modulation match circuit, FM demodulator and broadcasting reference clock, wherein:
The FM reception antenna receives fm broadcast signal;
The frequency modulation match circuit links to each other with described FM reception antenna, and described fm broadcast signal is mated, and reduces link load;
FM demodulator links to each other with described frequency modulation match circuit, with described fm broadcast signal demodulation, obtains described broadcast voice signal;
The broadcasting reference clock links to each other with described FM demodulator, for described FM demodulator provides local clock.
Further, described FM demodulator can link to each other with described microprocessor by serial peripheral interface, receives the control of described microprocessor to described operating state and work schedule.
And described FM demodulator can link to each other with described pin-saving chip.
The utility model can receive, handle mobile multimedia broadcast signal and traditional F M signal, compared with prior art, has the feature of mobile device, satisfies the user and watch the demand of listening to TV, broadcasting in mobile environment.
Description of drawings
Fig. 1 is a system configuration schematic diagram of watching or listen to TV, broadcast program in the prior art by broadband network.
Fig. 2 utilizes the bimodulus TV card to receive the system configuration schematic diagram of anolog TV signals or limited digital television signal in the prior art.
Fig. 3 is a structural representation of the present utility model.
Fig. 4 is the structural representation of multimedia receiving system embodiment in the utility model.
Fig. 5 is the structural representation of Web broadcast receiving system embodiment in the utility model.
Fig. 6 is the utility model method flow schematic diagram in use.
Embodiment
For making the purpose of this utility model, technical scheme and advantage clearer, the utility model is described in further detail below in conjunction with accompanying drawing.
Fig. 3 shows structural representation of the present utility model, and this embodiment 300 mainly comprises multimedia receiving system 310, Web broadcast receiving system 320, pin-saving chip 340, microprocessor 330 and power circuit 350, wherein:
Web broadcast receiving system 320 receives the Web broadcast signal, such as the broadcast singal of frequency modulation (FM) frequency range, with the demodulation of Web broadcast signal, obtains broadcast voice signal;
Pin-saving chip 340, link to each other with multimedia receiving system 310 and Web broadcast receiving system 320, the start-up routine and the initiation parameter of storage multimedia receiving system 310 and Web broadcast receiving system 320 enter normal mode of operation after guiding multimedia receiving system 310 and Web broadcast receiving system 320 are resetting under microprocessor 330 controls; And
Fig. 4 shows an embodiment of aforementioned multimedia receiving system 310, this embodiment mainly comprises S-band antenna 311, S-band antenna-matching circuit 312, S-band low noise amplifier 313, filter 314, hyperfrequency (UHF) wave band antenna 316, UHF wave band match circuit 317, demodulation chip 318 and multimedia reference clock 319, wherein:
S-band antenna 311, the broadcast singal of reception S-band is such as the CMMB signal of S-band;
S-band antenna-matching circuit 312 links to each other with S-band antenna 311, and the broadcast singal that S-band antenna 311 is received mates, and finishes the impedance conversion of circuit, reduces because the signal reflex that impedance does not match and causes reduces link load;
S-band low noise amplifier 313 links to each other with S-band antenna-matching circuit 312, and the S-band broadcast singal that S-band antenna 311 is received amplifies, and improves the carrier-to-noise ratio of broadcast singal;
Filter 314 links to each other with S-band low noise amplifier 313, and the S-band broadcast singal after amplifying is carried out filtering, removes noise, clutter in the front end signal circuit;
UHF wave band antenna 316, the broadcast singal of reception UHF wave band is such as the CMMB signal of UHF wave band;
UHF wave band match circuit 317 links to each other with UHF wave band antenna 316, and the broadcast singal that UHF wave band antenna 316 is received mates, and finishes the impedance conversion of circuit, reduces because the signal reflex that impedance does not match and causes reduces link load;
In addition, demodulation chip 318 links to each other with microprocessor 330 by the I2C interface, accepts the control of 330 pairs of operating states of microprocessor and work schedule; Demodulation chip 318 links to each other with pin-saving chip 340 by serial peripheral interface (SPI) interface, also link to each other with power circuit 350, under the power supply of power circuit 350, start-up routine and initiation parameter according to pin-saving chip 340 is stored enter normal mode of operation.
Fig. 5 shows an embodiment of aforementioned network broadcast receiver 320, and this embodiment mainly comprises FM reception antenna 321, FM match circuit 322, FM demodulator 323 and broadcasting reference clock 324, wherein:
FM antenna 321, the broadcast singal of reception FM;
FM match circuit 322 links to each other with FM antenna 321, and the broadcast singal that FM antenna 321 is received mates, and finishes the impedance conversion of circuit, reduces because the signal reflex that impedance does not match and causes reduces link load;
FM demodulator 323 links to each other with FM match circuit 322, and the broadcast singal of FM is demodulated to broadcast voice signal;
Broadcasting reference clock 324 links to each other with FM demodulator 323, for FM demodulator 323 provides local clock.
In addition, FM demodulator 323 links to each other with microprocessor 330 by the SPI interface, accepts the control of 330 pairs of operating states of microprocessor and work schedule.FM demodulator 323 also links to each other with pin-saving chip 340, power circuit 350, and under the power supply of power circuit 350, start-up routine and initiation parameter according to pin-saving chip 340 is stored enter normal mode of operation.
Among the embodiment shown in Fig. 3, microprocessor 330 and multimedia terminal 390 are connected by interface circuit, this interface circuit is such as being usb circuit, and usb circuit can pass through SPI interface or secure digital input and output (SDIO) interface receiving video signals.Multimedia terminal 390 is such as being notebook computer, receive multimedia video signal, multimedia audio signal and broadcast voice signal by interface circuit from microprocessor 330, and by laptop computer displays demonstration multimedia video content, by notebook computer loud speaker or earphone play multimedia audio content and/or broadcast audio content.
Above-mentioned S-band antenna 311, UHF wave band antenna 316 and FM antenna 321 more preferably adopt built-in aerial to be convenient for carrying, and change the antenna of the usefulness earphone of extensive employing in the prior art as the FM received signal, have reduced the inconvenience that the user need additionally carry earphone.
Fig. 6 shows the utility model method flow signal in use, and this method mainly may further comprise the steps:
Put FM demodulator 323, microprocessor 330 and pin-saving chip 340 in 320;
If user A need watch certain channel TV program, then send command adapted thereto as the application program on the notebook computer 113, and pass to microprocessor 330 through USB interface by multimedia terminal 390.Microprocessor 330 will instruct and pass to demodulation chip 318 by the I2C bus.After demodulation chip 318 receives user instruction, revise to receive frequency, the relevant work pattern is set, changes the resonance point of reception antenna by the user instruction requirement, thus the programme signal of this channel of receiving from antenna.This programme signal is delivered to microprocessor 330 through demodulation chip 318 demodulation, decoding back by the parallel port, and while microprocessor 330 is delivered to notebook computer after data are converted to the signal that USB interface can receive.Video information and audio-frequency information present video information by display screen after corresponding application programs decompresses, by the loudspeaker plays audio-frequency information, user A watches the TV programme of this channel.
And when user A need listen to the FM radio broadcasting of a certain frequency, then can send command adapted thereto as the application program on the notebook computer 113, and pass to microprocessor 330 through USB interface by multimedia terminal 390.Microprocessor 330 passes to FM demodulator 323 by the I2C bus with this instruction, FM demodulator 323 is provided with working frequency points by this instruction, to be demodulated into audio signal from this frequency FM signal that FM antenna 321 receives, from the earphone or the loud speaker output of notebook computer, the program of radio station of this frequency of user A uppick.
The data card that the utility model proposes can receive, handle mobile multimedia broadcast signal and traditional F M signal, solved the ancillary equipment complexity, the mobility that exist in the prior art poor, take Internet resources, Web broadcast program non real-time and the little problem of the scope of application.Compared with prior art, the utlity model has the feature of mobile device, satisfy the user and in mobile environment, watch the demand of listening to TV, broadcasting.Do not take Internet resources, and wireless video and these two kinds of application of radio broadcasting take different wireless signal frequency ranges, the user can enjoy the enjoyment of TV and broadcasting simultaneously.
Though the disclosed execution mode of the utility model as above, the execution mode that described content just adopts for the ease of understanding the utility model is not in order to limit the utility model.Technical staff under any the utility model in the technical field; under the prerequisite that does not break away from the disclosed spirit and scope of the utility model; can do any modification and variation what implement in form and on the details; but scope of patent protection of the present utility model still must be as the criterion with the scope that appending claims was defined.
Claims (8)
1, a kind of data card that inserts broadcast singal is positioned at the multimedia terminal, it is characterized in that, comprises multimedia receiving system, Web broadcast receiving system, pin-saving chip, microprocessor and power circuit, wherein:
The multimedia receiving system receives mobile multimedia broadcast signal, with described multimedia broadcast signal demodulation, decoding, obtains multimedia video signal and multimedia audio signal;
The Web broadcast receiving system receives the Web broadcast signal, with the demodulation of described Web broadcast signal, obtains broadcast voice signal;
Microprocessor is connected with described multimedia receiving system, Web broadcast receiving system and described multimedia terminal;
Pin-saving chip links to each other with described multimedia receiving system and Web broadcast receiving system; And
Power circuit links to each other with described multimedia receiving system, Web broadcast receiving system, microprocessor and pin-saving chip, is described multimedia receiving system, Web broadcast receiving system, microprocessor and the power supply of storage core by external power source.
2, data card as claimed in claim 1 is characterized in that, described multimedia receiving system comprises S-band antenna, S-band antenna-matching circuit, S-band low noise amplifier, filter, demodulation chip and multimedia reference clock, wherein:
The S-band antenna receives the S-band broadcast singal;
The S-band antenna-matching circuit links to each other with described S-band antenna, and described S-band broadcast singal is mated, and reduces link load;
The S-band low noise amplifier links to each other with described S-band antenna-matching circuit, and described S-band broadcast singal is amplified, and improves the carrier-to-noise ratio of described S-band broadcast singal;
Filter links to each other with described S-band low noise amplifier, and the described S-band broadcast singal after amplifying is carried out filtering;
Demodulation chip links to each other with described filter, and described S-band broadcast singal is carried out demodulation, decoding, obtains S-band multimedia audio signal and multimedia video signal; And
The multimedia reference clock links to each other with described demodulation chip, for described demodulation chip provides local clock.
3, data card as claimed in claim 2 is characterized in that, described multimedia receiving system further comprises shf band antenna and shf band match circuit, wherein:
The shf band antenna receives the shf band broadcast singal;
The shf band match circuit links to each other with described shf band antenna, and described shf band broadcast singal is mated, and reduces link load;
Described demodulation chip further links to each other with described shf band match circuit, and described shf band broadcast singal is carried out demodulation, decoding, obtains shf band multimedia audio signal and multimedia video signal.
4, as claim 2 or 3 described data cards, it is characterized in that:
Described demodulation chip links to each other with described microprocessor by the I2C interface, receives the control of described microprocessor to described operating state and work schedule.
5, as claim 2 or 3 described data cards, it is characterized in that:
Described demodulation chip links to each other with described pin-saving chip by serial peripheral interface.
6, data card as claimed in claim 1 is characterized in that, described Web broadcast receiving system comprises FM reception antenna, frequency modulation match circuit, FM demodulator and broadcasting reference clock, wherein:
The FM reception antenna receives fm broadcast signal;
The frequency modulation match circuit links to each other with described FM reception antenna, and described fm broadcast signal is mated, and reduces link load;
FM demodulator links to each other with described frequency modulation match circuit, with described fm broadcast signal demodulation, obtains described broadcast voice signal;
The broadcasting reference clock links to each other with described FM demodulator, for described FM demodulator provides local clock.
7, data card as claimed in claim 6 is characterized in that:
Described FM demodulator links to each other with described microprocessor by serial peripheral interface, receives the control of described microprocessor to described operating state and work schedule.
8, data card as claimed in claim 6 is characterized in that:
Described FM demodulator links to each other with described pin-saving chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200820134230U CN201388207Y (en) | 2008-09-17 | 2008-09-17 | Data card for receiving broadcast signals |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200820134230U CN201388207Y (en) | 2008-09-17 | 2008-09-17 | Data card for receiving broadcast signals |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201388207Y true CN201388207Y (en) | 2010-01-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200820134230U Expired - Fee Related CN201388207Y (en) | 2008-09-17 | 2008-09-17 | Data card for receiving broadcast signals |
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| CN (1) | CN201388207Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106302823A (en) * | 2016-10-21 | 2017-01-04 | 过冬 | A kind of data delivery system based on Internet of Things and dispatching method thereof |
-
2008
- 2008-09-17 CN CN200820134230U patent/CN201388207Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106302823A (en) * | 2016-10-21 | 2017-01-04 | 过冬 | A kind of data delivery system based on Internet of Things and dispatching method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20100120 Termination date: 20130917 |