CN201838330U - MP3 (moving picture experts group audio layer-3) player capable of receiving mobile television signals - Google Patents
MP3 (moving picture experts group audio layer-3) player capable of receiving mobile television signals Download PDFInfo
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- CN201838330U CN201838330U CN2010205694124U CN201020569412U CN201838330U CN 201838330 U CN201838330 U CN 201838330U CN 2010205694124 U CN2010205694124 U CN 2010205694124U CN 201020569412 U CN201020569412 U CN 201020569412U CN 201838330 U CN201838330 U CN 201838330U
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- mobile television
- cmmb
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- player
- digital signal
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Abstract
The utility model discloses an MP3 player capable of receiving mobile television signals, which comprises a display module, a microprocessor, a digital signal processor, a CMMB (China mobile multimedia broadcasting) mobile television receiving module, an antenna, a radiofrequency tuner and a demodulator. The antenna is connected with the radiofrequency tuner, the radiofrequency tuner is connected with the CMMB mobile television receiving module through the demodulator, the CMMB mobile television receiving module is connected with the digital signal processor through the microprocessor, and the digital signal processor is connected with a display screen through the display module. The CMMB mobile television receiving module is added in the MP3 player, mobile signals received by the radiofrequency turner are sent to the demodulator after processes of frequency mixing, correction low-pass filtering and gaining, and TS (transport stream) in standard format is formed and sent to the CMMB mobile television receiving module after channel demodulation and forward error correction of the demodulator. Compared with the prior art, the MP3 player can receive stable and clear mobile television signals.
Description
Technical field
The utility model relates to the MP3 player, and what be specifically related to is a kind of MP3 player that receives mobile television signal.
Background technology
China Mobile multimedia broadcasting (CMMB, China Mobile Multimedia Broadcasting) is a kind of high-power S-band satellite-signal covering whole nation that utilizes, utilize ground supplement translator to cover the satellite-signal blind area with mending point with content repeater satellite signal simultaneously frequently, utilize mobile radio networks to make up return path, thus the mobile media broadcasting network that composition One-to-All Broadcast and two-way interactive combine.
CMMB adopts digital technologies such as advanced coding, compression, modulation, aims at the portable receiving terminal of small-size screen below 7 cun the broadcast TV program service is provided, and has the not available technical characterstics of conventional digital TV such as the reception of moving, efficient power saving.
Present MP3 player only is used for functions such as music, video-see and e-book reading, and it can not realize receiving mobile television signal, and its function is comparatively single.
The utility model content
For this reason, the utility model proposes a kind of MP3 player that receives mobile television signal, the built-in CMMB mobile TV of this MP3 player module can receive mobile television signal.
For achieving the above object, the utility model is mainly by the following technical solutions:
A kind of MP3 player that receives mobile television signal, comprise display module, microprocessor, digital signal processor, CMMB mobile TV receiver module, antenna, radio-frequency tuner and detuner, described antenna is connected with radio-frequency tuner, radio-frequency tuner is connected with CMMB mobile TV receiver module by detuner, CMMB mobile TV receiver module is connected with digital signal processor by microprocessor, and digital signal processor is connected with display screen by display module.
Wherein also comprise a decoder module, described microprocessor is connected with CMMB mobile TV receiver module by this decoder module.
The utility model increases by a CMMB mobile TV receiver module in the MP3 player, the mobile television signal that receives by radio-frequency tuner carries out sending to detuner after mixing, correction, low-pass filtering and the gain process, through behind the channel demodulation and forward error correction of detuner, the TS that forms standard format sends to CMMB mobile TV receiver module.Compared with prior art, the utility model MP3 player can receive stable, mobile television signal clearly.
Description of drawings
Fig. 1 is a system chart of the present utility model.
Embodiment
For setting forth thought of the present utility model and purpose, the utility model is described further below in conjunction with the drawings and specific embodiments.
See also shown in Figure 1ly, Fig. 1 is a system chart of the present utility model.The utility model provides a kind of MP3 player that receives mobile television signal, and it mainly includes display screen, display module, microprocessor, digital signal processor, CMMB mobile TV receiver module, antenna, radio-frequency tuner and detuner.
Wherein said antenna is connected with radio-frequency tuner, radio-frequency tuner is connected with CMMB mobile TV receiver module by detuner, CMMB mobile TV receiver module is connected with digital signal processor by microprocessor, and digital signal processor is connected with display screen by display module.
Antenna is connected with radio-frequency tuner, radio-frequency tuner is connected with detuner, and the radio-frequency tuner here is a front-end chip, can receive the radiofrequency signal of a plurality of wave bands (VHFIII/UHF/L1/L2/S), these radiofrequency signals are given detuner after amplifying through noise amplifier LNA, mixing, DC correction, low-pass filtering and gain, radio-frequency tuner also is built-in with the clock shaping synchronousing circuit and at sheet LDO circuit, therefore can directly imports external clock and operating voltage (1.8V) in addition.
Detuner receives the zero intermediate frequency signals from radio-frequency tuner, and after channel demodulation and forward error correction, the TS that forms standard format gives the reduction of decoding of CMMB mobile TV receiver module and decoder module.The built-in programmable DSP hardware system of detuner has multiple interfaces function (USB, SDIO, SPI and BUS bus), and built-in MPE-FEC internal memory.Detuner is to realize that by loading different firmwares many interfaces then are to select by built-in configuration pin to the selection of many standards, in addition can also be by the control of I2C bus realization to radio-frequency tuner.
CMMB mobile TV receiver module receives the CMMB TV signal by radio-frequency tuner, detuner and antenna, the MFS of outputting standard flows to the decoder module of rear end after treatment, wherein the MFS stream by the output of CMMB mobile TV receiver module adopts SDIO or SPI mode, external interface is simple, can support multiple demoder.
Be input to microprocessor by MFS stream signal behind the decoder module, send to digital signal processor, and on display screen, show, thereby finish the reception and the broadcast of CMMB signal by digital signal processor and display module processing back by microprocessor processes.
More than be that a kind of MP3 player that receives mobile television signal provided by the utility model is described in detail, used specific case herein structural principle of the present utility model and embodiment are set forth, above embodiment just is used for helping to understand method of the present utility model and core concept thereof; Simultaneously, for one of ordinary skill in the art, according to thought of the present utility model, the part that all can change in specific embodiments and applications, in sum, this description should not be construed as restriction of the present utility model.
Claims (2)
1. MP3 player that can receive mobile television signal, it is characterized in that comprising display module, microprocessor, digital signal processor, CMMB mobile TV receiver module, antenna, radio-frequency tuner and detuner, described antenna is connected with radio-frequency tuner, radio-frequency tuner is connected with CMMB mobile TV receiver module by detuner, CMMB mobile TV receiver module is connected with digital signal processor by microprocessor, and digital signal processor is connected with display screen by display module.
2. the MP3 player that receives mobile television signal according to claim 1 is characterized in that also comprising a decoder module, and described microprocessor is connected with CMMB mobile TV receiver module by this decoder module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205694124U CN201838330U (en) | 2010-10-19 | 2010-10-19 | MP3 (moving picture experts group audio layer-3) player capable of receiving mobile television signals |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205694124U CN201838330U (en) | 2010-10-19 | 2010-10-19 | MP3 (moving picture experts group audio layer-3) player capable of receiving mobile television signals |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201838330U true CN201838330U (en) | 2011-05-18 |
Family
ID=44008433
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205694124U Expired - Fee Related CN201838330U (en) | 2010-10-19 | 2010-10-19 | MP3 (moving picture experts group audio layer-3) player capable of receiving mobile television signals |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201838330U (en) |
-
2010
- 2010-10-19 CN CN2010205694124U patent/CN201838330U/en not_active Expired - Fee Related
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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: 20110518 Termination date: 20121019 |