CN201878290U - Mobile digital television stick device - Google Patents
Mobile digital television stick device Download PDFInfo
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- CN201878290U CN201878290U CN2010206594246U CN201020659424U CN201878290U CN 201878290 U CN201878290 U CN 201878290U CN 2010206594246 U CN2010206594246 U CN 2010206594246U CN 201020659424 U CN201020659424 U CN 201020659424U CN 201878290 U CN201878290 U CN 201878290U
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Abstract
The utility model provides a mobile digital television stick device, comprising a shell and a control circuit board packaged in the shell. The control circuit board comprises a power supply module, a signal receiving module, a signal processing module, an SMD decrypting module and a communication interface. The power supply module is used for providing working power supply. The signal receiving module is connected with an external antenna and is used for receiving and filtering China mobile multimedia broadcasting (CMMB) signals. The signal processing module is connected with the signal receiving module and is used for tuning and demodulating the filtered CMMB signals. The SMD decrypting module is connected with the signal processing module and is used for decrypting and descrambling demodulated CMMB signals. One end of the communication interface is connected with the signal processing module, and the other end is connected with a display terminal, and the communication interface is used for transmitting the processed CMMB signals to a display terminal. The mobile digital television stick device has the functions of receiving, tuning, demodulating, decrypting and descrambling the CMMB signals, has a small volume and low power consumption, and is convenient for users to operate.
Description
Technical field
The utility model relates to the mobile TV bar device, especially refers to the TV rod of built-in SMD deciphering module.
Background technology
CMMB is the abbreviation of China Mobile multimedia broadcasting (China Mobile MultimediaBroadcasting).It is domestic independent research first the cover move the system that receiving terminal provides high-quality broadcast TV program and information service towards 7 inches following the small screen, the technical advantage of this system just is to solve admirably the problem of portable terminal wireless receiving TV signal smoothness.Consider problems such as CMMB charge and profit model, make the development trend of CMMB finally will add CA (Certification Authority) card, it is CMMB deciphering card, it comprises three kinds of manner of decryption, be respectively CA kilocalorie, CA lesser calorie, the built-in deciphering of SMD (Surface Mounted Devices, surface mount device).
Wherein, the CA kilocalorie is meant simultaneously integrated deciphering and descrambling function in the deciphering card, mobile TV terminal only is responsible for receiving and playing the CMMB program in this scheme, the mobile TV terminal that has designed in this scheme only need be done the simple software upgrading, inserts the CA kilocalorie and just can receive the CMMB TV programme of encrypting in newly-built city; The CA lesser calorie is meant only integrated decipher function in deciphering card, the descrambling function need be finished by means of mobile TV terminal, this kind scheme cost is lower than kilocalorie, but it is higher than kilocalorie to implement difficulty, mobile TV terminal receives and plays the CMMB program except that being responsible in this scheme, also comprises the decipher function of part to scrambled program stream; The built-in deciphering of SMD is meant that with deciphering and descrambling unit package be SMD chip and directly welded and installed is on the master control circuit board of mobile digital TV rod, and the mobile digital TV rod utilizes this SMD chip to obtain key, utilizes this key to be decrypted descrambling then.That is to say adopt the SMD scheme the mobile digital TV rod in addition plug-in card just can watch ciphered program, easy to use, and saved the expense of purchase CA kilocalorie, CA lesser calorie.In addition, CA kilocalorie, CA lesser calorie do not have SMD convenient yet in actual use, often plug CA kilocalorie or CA lesser calorie, long-time after, deciphering card or draw-in groove may damage, the deciphering card also may be lost.
In view of this, designer in the utility model relies on it to be engaged in the experience and the practice of relevant industries for many years, and through concentrating on studies and developing, finally by select correct chip and circuit design scheme create a kind of promptly have can receive, the CMMB signal of tuning, demodulation, decoding clear stream program, can add mobile digital TV rod (CMMBUSB dongle) device of the CMMB signal of CA again by the deciphering of SMD mode descrambling.This mobile digital TV bar device have excellent performance, reliable and stable, manufacturing cost is relatively low, can fully satisfy advantages such as present practical application and development trend.
Summary of the invention
Proposition purpose of the present utility model is, a kind of mobile digital TV bar device with reception, tuning, demodulation, deciphering and descrambling CMMB semiotic function is provided.
The technical solution of the utility model: for reaching above purpose, mobile digital TV bar device of the present utility model comprises:
One shell and one is packaged in the control circuit board in the described shell; Wherein, described control circuit board comprises:
One power module, it is used to each module on the described control circuit board that required operating voltage is provided;
One signal receiving module, it is connected with an external antenna, is used to receive a CMMB signal and it is carried out Filtering Processing;
One signal processing module, it is connected with described signal receiving module, is used for filtered CMMB signal is carried out tuning and demodulation process;
One SMD deciphering module, it is connected with described signal processing module, is used for the CMMB signal after the demodulation is decrypted and scramble process; And
One communication interface, the one end is connected with described signal processing module, and the other end is connected with a display terminal, is used for transfer of data with the CMMB signal after handling to described display terminal.
Wherein, described external antenna adopts MCX (Media Center Extender) interface.
Wherein, described signal processing module is SMS 1180 chips.
Wherein, described power module is the RT8020 chip.
Wherein, described SMD deciphering module is the Nagra2 chip.
Wherein, described communication interface is USB interface, SPI interface, blue tooth interface or infrared interface etc.
Wherein, described display terminal can be computer, notebook computer, mobile phone or Digital Television etc.
Preferably, the utility model also comprises an indicating lamp module, and it is used to show the operating state of described control circuit board.
The beneficial effects of the utility model: mobile digital TV bar device of the present utility model not only has the function of the CMMB signal of general reception, tuning, demodulation, the general clear stream program of decoding, can also be decrypted and scramble process the CMMB signal of encrypting by the SMD deciphering module;
The utlity model has that volume is little, low in energy consumption, the advantage of user's simple operation etc., can satisfy the market demand and the development trend of present broadcasting and TV CMMB playing programs.
Description of drawings
Fig. 1 is an internal structure schematic diagram of the present utility model;
Fig. 2 is the structural representation of an embodiment of the present utility model.
Description of reference numerals: 1-shell; The 2-control circuit board; The 21-signal receiving module; The 22-signal processing module; The 23-SMD deciphering module; The 24-communication interface; The 25-power module; The 26-indicating lamp module; The 3-external antenna; The 4-display terminal.
Embodiment
For feature and advantage of the present utility model can be become apparent more, the utility model is described in further detail below in conjunction with the drawings and specific embodiments.Obviously, described embodiment only is the utility model part embodiment, rather than whole embodiment.
See also Fig. 1, mobile digital TV bar device of the present utility model comprises:
One shell 1 and one is packaged in the control circuit board 2 in the described shell; Wherein, described control circuit board 2 comprises:
One signal receiving module 21, it is connected with an external antenna 3, is used to receive a CMMB signal and it is carried out Filtering Processing;
One signal processing module 22, it is connected with described signal receiving module 21, is used for filtered CMMB signal is carried out tuning and demodulation process;
One SMD deciphering module 23, it is connected with described signal processing module 22, is used for the CMMB signal after the demodulation is decrypted and scramble process;
One communication interface 24, the one end is connected with described signal processing module 22, the other end is connected 4 with a display terminal, be used for the transfer of data of the CMMB signal after handling to described display terminal 4 to play; And
One power module 25, it is used to each module of described control circuit board 2 that required operating voltage is provided.
Wherein, described external antenna 3 adopts MCX (Media Center Extender) interface.
Wherein, described signal processing module 22 is SMS 1180 chips.
Wherein, described power module 25 is the RT8020 chip.
Wherein, described SMD deciphering module 23 is the Nagra2 chip.Because the integrated level height of used chip, thereby significantly reduced the volume of this mobile digital TV bar device, and its cost and power consumption are all very low, make that the performance of this device is more reliable and more stable.
Wherein, described communication interface 24 is USB interface, SPI interface, blue tooth interface or infrared interface etc.
Wherein, described display terminal 4 can be computer, notebook computer, mobile phone or Digital Television etc.
Preferably, the utility model also comprises an indicating lamp module 26, and it is used to show the operating state of described control circuit board 2.
See also Fig. 2, the utility model in use, receive a CMMB signal and it is carried out Filtering Processing by external antenna 3, if the user just hopes the clear stream program of watching the CMMB signal, then 22 of signal processing modules carry out tuning to it and correct Frequency point are set, and again the CMMB signal behind this Frequency point tuning are carried out demodulation process, and the data code flow of generation clear stream program, at last, be transferred to display terminal 4 by communication interface 24, SMD deciphering module 23 is inoperative in this case; If the user wants to watch the program of the encryption scrambling of CMMB signal, then signal processing module 22 carries out tuning to it earlier and correct Frequency point is set, again the CMMB signal behind this Frequency point tuning is carried out demodulation process, and the data flow of scrambling is encrypted in generation, signal processing module 22 obtains key by connected SMD deciphering module 23 then, utilize this key that the data flow of the encryption scrambling that demodulates is decrypted descrambling, and generation does not have the data flow of encrypting no scrambling, at last, be transferred to display terminal 4 by communication interface 24; Display terminal 4 is used for the data of the CMMB signal after the playback process.
Wherein, the input power supply of power module 25 can provide by civil power, also can provide by display terminal 4, and it becomes the power supply of different magnitudes of voltage with the power source conversion that receives, to satisfy the working power of each module on the control circuit board 2.
Obviously, above embodiment only in order to the explanation the technical solution of the utility model, but not limits it; Those of ordinary skill in the art can make amendment to the technical scheme of utility model, perhaps part technical characterictic wherein is equal to replacement; And these modifications or replacement do not make the essence of appropriate technical solution break away from the spirit and scope of the utility model embodiment technical scheme.Like this, if of the present utility model these are revised and modification belongs within the scope of the utility model claim and equivalent technologies thereof, then the utility model also comprises these changes and modification interior.
Claims (6)
1. a mobile digital TV bar device is characterized in that, comprising:
One shell and one is packaged in the control circuit board in the described shell; Wherein, described control circuit board comprises:
One power module, it is used to provide working power;
One signal receiving module, it is connected with an external antenna, and described signal receiving module is used to receive a CMMB signal and it is carried out Filtering Processing;
One signal processing module, it is connected with described signal receiving module, and described signal processing module is used for filtered CMMB signal is carried out tuning and demodulation process;
One SMD deciphering module, it is connected with described signal processing module, and described SMD deciphering module is used for the CMMB signal after the demodulation is decrypted and scramble process; And
One communication interface, the one end is connected with described signal processing module, and the other end of described communication interface is connected with a display terminal, and described communication interface is used for transfer of data with the CMMB signal after handling to described display terminal.
2. a kind of mobile digital TV bar device according to claim 1 is characterized in that also comprise an indicating lamp module, it is used to show the operating state of described control circuit board.
3. a kind of mobile digital TV bar device according to claim 1 is characterized in that described signal processing module is the SMS1180 chip.
4. a kind of mobile digital TV bar device according to claim 2 is characterized in that described power module is the RT8020 chip.
5. a kind of mobile digital TV bar device according to claim 3 is characterized in that described SMD deciphering module is the Nagra2 chip.
6. a kind of mobile digital TV bar device according to claim 4 is characterized in that, described communication interface is USB interface, SPI interface, blue tooth interface or infrared interface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206594246U CN201878290U (en) | 2010-12-14 | 2010-12-14 | Mobile digital television stick device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206594246U CN201878290U (en) | 2010-12-14 | 2010-12-14 | Mobile digital television stick device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201878290U true CN201878290U (en) | 2011-06-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206594246U Expired - Lifetime CN201878290U (en) | 2010-12-14 | 2010-12-14 | Mobile digital television stick device |
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| CN (1) | CN201878290U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102497583A (en) * | 2011-12-12 | 2012-06-13 | 上海华勤通讯技术有限公司 | Analogue television (ATV)/digital television (DTV) device and mobile terminal |
| CN102497217A (en) * | 2011-11-28 | 2012-06-13 | 北京乾图方园软件技术有限公司 | Method for enhancing receiving signal of China mobile multimedia broadcasting (CMMB) chip |
| CN103124371A (en) * | 2013-01-23 | 2013-05-29 | 南京熊猫电子股份有限公司 | Conditional access device based on SMD (scheduling management display) mode |
| CN103237256A (en) * | 2013-04-25 | 2013-08-07 | 郑州威科姆科技股份有限公司 | Digital television signal descrambling method based on USB (Universal Serial Bus) interface |
| CN103248954A (en) * | 2012-02-14 | 2013-08-14 | 国民技术股份有限公司 | Receiving device of digital television |
| CN105025329A (en) * | 2015-07-28 | 2015-11-04 | 苏州南光电子科技有限公司 | Download device of digital television mobile data |
| CN112004130A (en) * | 2019-05-27 | 2020-11-27 | 深圳市亿泉电子有限公司 | Mobile television stick |
-
2010
- 2010-12-14 CN CN2010206594246U patent/CN201878290U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102497217A (en) * | 2011-11-28 | 2012-06-13 | 北京乾图方园软件技术有限公司 | Method for enhancing receiving signal of China mobile multimedia broadcasting (CMMB) chip |
| CN102497583A (en) * | 2011-12-12 | 2012-06-13 | 上海华勤通讯技术有限公司 | Analogue television (ATV)/digital television (DTV) device and mobile terminal |
| CN103248954A (en) * | 2012-02-14 | 2013-08-14 | 国民技术股份有限公司 | Receiving device of digital television |
| CN103124371A (en) * | 2013-01-23 | 2013-05-29 | 南京熊猫电子股份有限公司 | Conditional access device based on SMD (scheduling management display) mode |
| CN103237256A (en) * | 2013-04-25 | 2013-08-07 | 郑州威科姆科技股份有限公司 | Digital television signal descrambling method based on USB (Universal Serial Bus) interface |
| CN105025329A (en) * | 2015-07-28 | 2015-11-04 | 苏州南光电子科技有限公司 | Download device of digital television mobile data |
| CN112004130A (en) * | 2019-05-27 | 2020-11-27 | 深圳市亿泉电子有限公司 | Mobile television stick |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110622 |
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| CX01 | Expiry of patent term |