CN202127441U - Projection mobile terminal capable of supporting real media variable bitrate (RMVB) video format - Google Patents
Projection mobile terminal capable of supporting real media variable bitrate (RMVB) video format Download PDFInfo
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- CN202127441U CN202127441U CN2010206837479U CN201020683747U CN202127441U CN 202127441 U CN202127441 U CN 202127441U CN 2010206837479 U CN2010206837479 U CN 2010206837479U CN 201020683747 U CN201020683747 U CN 201020683747U CN 202127441 U CN202127441 U CN 202127441U
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Abstract
The utility model discloses a projection mobile terminal capable of supporting a real media variable bitrate (RMVB) video format, which comprises a base band module, a storage module, a multi-media processing module, a liquid crystal module (LCM), a projector interface module and an audio module. The base band module is used for reading RMVB video files, controlling a related multi-media module and driving the LCM to display and output. The multi-media processing module is used for decoding audio and video of the RMVB video files, the projector interface module comprises a signal switching circuit and a video interface, and the signal switching circuit is used for outputting and switching video signals between the LCM and a projector. The video interface is connected with the projector and enables the video to be output to the projector so as to be output and displayed, and the audio module is used for outputting the audio. The projection mobile terminal capable of supporting the RMVB video format can directly play the RMVB video files and is connected with the projector through the video interface, thereby completing video projection and overcoming the drawback that the mobile terminal is less in screen.
Description
Technical field
The utility model relates to a kind of portable terminal, especially a kind of projection portable terminal of supporting the RMVB video format.
Background technology
Along with mobile communication, development of multimedia technology, people require increasingly high to the mobile terminal video play multimedia, mainly show the size of screen, four aspects of the size of video playback definition, video file and the versatility of video file format.
Common portable terminal is basically all supported the MPEG-4 video format at present.MPEG-4 is custom-designed for the high-quality video of playing streaming video, its very narrow band width capable of using, and through the frame reconstruction technique, compression and transmission data obtain best picture quality in the hope of using minimum data.When but the video file of this type of form was play on TV with portable terminal, the picture quality of video did not generally reach the level of normal viewing, had influenced the effect of watching video.
RMVB is a kind of by the RM video format extended new video format of upgrading; Its mode of having broken the sort of average compression sampling of original RM form; On the basis that guarantees average compression ratio, rationally utilize the bit rate resource; The static in other words picture scene employing lower code rate few with the action scene can reserve the more bandwidth space like this, and these bandwidth can be utilized when the picture scene of rapid movement occurring.Under the prerequisite that has guaranteed the still frame quality, improve the image quality of moving image significantly like this, thereby just reached delicate balance between picture quality and the file size.With respect to the DVD form, the RMVB video also has than remarkable advantages, and a size is the DVD film about 700MB, if it is transcribed into the RMVB form of same audiovisual quality, its stature is at most also with regard to about 400MB.Because the RMVB file but can obtain the definition of similar DVD video with the compression ratio that is higher than DVD, RMVB video file resource rich on the network at present.
But support on the portable terminal market that the product of RMVB video playback is less, main product all is to support the MP4 form.A handful of adopts the high terminal of TI (Texas Instrument) scheme, and cost is higher comparatively speaking, belongs to the ranks of high terminal, on middle and low-end market, does not support the portable terminal that RMVB plays basically.
In addition; RMVB portable terminal on the market is only limited in this machine sowing and shows a film; Sharing is lower, and viewing effect is not good, and the portable terminal that minority has the TVOUT video output interface can connect TV or projecting apparatus through video line; But output is to need built-in video decoding chip mostly, has increased this machine cost.
The utility model content
The technical problem that the utility model will solve provides a kind of projection portable terminal of the RMVB of support video format, can play-over the RMVB video file and can carry out video-projection through projecting apparatus.
For achieving the above object, the utility model provides a kind of projection portable terminal of the RMVB of support video format, comprising: baseband module, memory module, multimedia processing module, LCM module, projecting apparatus interface module, audio-frequency module.
Said baseband module is accomplished the control of the reading of RMVB video file, associated multimedia module and is driven the LCM module and shows output; Said memory module is used to store the RMVB video file, and said multimedia processing module is used to accomplish the audio/video decoding of RMVB video file, outputting video signal and audio signal; Said LCM module is a LCD display; Said projecting apparatus interface module comprises signal switching circuit and video interface, and signal switching circuit is used to accomplish the output of vision signal between LCM module and projecting apparatus and switches, and video interface links to each other with projecting apparatus; Video is outputed to projecting apparatus output show that said audio-frequency module is used for audio frequency output.
Further, said baseband module reads RMVB video file through I80 interface, SPI interface or SD parallel interface from memory module through said baseband module, and file data is transferred to the multimedia processing module through the SPI interface.
Said memory module is inner flash or an outside extended menory of portable terminal, and the T-flash of outside expansion is adopted in the utility model preferred embodiment.
Said multimedia processing module is decoded to the RMVB video file data that receive; Export yuv video signal and audio signal respectively; Wherein the yuv video signal is transferred to baseband module through the CCIR interface; Audio signal is given baseband module through inner ADC output IIS data, and baseband module outputs to the yuv video signal that receives that the LCM module shows, the IIS data send to the audio-frequency module output sound behind DAC with the RGB form.
The signal switching circuit of said projecting apparatus interface module adopts the highway switching of high bandwidth; Under the portable terminal normal operating conditions; Highway switching conducting on LCM module direction switches under the projecting apparatus operating state at portable terminal, highway switching conducting on the projecting apparatus direction.
The video interface of said projecting apparatus interface module adopts a kind of parallel bus video interface of supporting hot plug; This interface improves the I80 parallel bus interface of existing standard; Keep original choosing of bus, reset, the data-signal of data/order, reading and writing control signal and parallel bus, increase access detection signal and synchronizing signal.The access of said video interface detects the pull-up resistor that a 100k is arranged on the pin; Insert detection signal and be defaulted as high level, after projecting apparatus inserted portable terminal, projecting apparatus inserted this and detects the pin output low level; After baseband module detects this access signal; Through signal switching circuit total line traffic control and data/address bus are switched to the interface of projecting apparatus from the LCM module, to projecting apparatus output reset signal, after projecting apparatus detects this reset signal; Carry out system initialization, start the back and communicate according to the I80 bus communication protocol.Synchronizing signal is the synchronous control signal that projecting apparatus sends portable terminal.
The utility model is supported the projection portable terminal of RMVB video format; It can play-over the RMVB video file, and links to each other with projecting apparatus through video interface, accomplishes video-projection; Exempted the less drawback of mobile terminal screen, made the user have better audio visual environment to watch video.
Description of drawings
Fig. 1 is the system block diagram that the utility model is supported the projection portable terminal of RMVB video format.
Fig. 2 is a parallel bus video interface communication scheme.
Fig. 3 is the electric power system block diagram of MV6600C.
Embodiment
Below in conjunction with accompanying drawing the utility model is done further to set forth.
As shown in Figure 1, the utility model provides a kind of projection portable terminal of the RMVB of support video format, comprising: baseband module 101, memory module 102, multimedia processing module 103, LCM module 104, projecting apparatus interface module 105, audio-frequency module 106.
Said baseband module 101 is accomplished the control of the reading of RMVB video files, associated multimedia module and is driven LCM module 104 and shows output; Said memory module 102 is used to store the RMVB video file; Said multimedia processing module 103 is used to accomplish the audio/video decoding of RMVB video file; Outputting video signal and audio signal, said LCM module 104 is a LCD display, said projecting apparatus interface module 105 comprises signal switching circuit and video interface; Be used to accomplish the output of vision signal between LCM module 104 and projecting apparatus and switch, said audio-frequency module 106 is used for audio frequency output.
Said baseband module 101 reads the RMVB video file through I80 interface, SPI interface or SD parallel interface from memory module 102, and file data is transferred to multimedia processing module 103 through the SPI interface.
Said memory module 102 is inner flash or an outside extended menory of portable terminal, and the T-flash of outside expansion is adopted in the utility model preferred embodiment.
The RMVB video file data that 103 pairs of said multimedia processing modules receive are decoded; Export yuv video signal and audio signal respectively; Wherein the yuv video signal is transferred to baseband module 101 through the CCIR interface; Audio signal is given baseband module 101 through inner ADC output IIS data, and baseband module 101 outputs to the yuv video signal that receives that LCM module 104 shows, the IIS data send to audio-frequency module 106 output sounds behind DAC with the RGB form.
As shown in Figure 2; The signal switching circuit of said projecting apparatus interface module 105 adopts the highway switching of high bandwidth; FSA2457 is adopted in the utility model preferred embodiment, under the portable terminal normal operating conditions, and highway switching conducting on LCM module 104 directions; Switch under the projecting apparatus operating state highway switching conducting on the projecting apparatus direction at portable terminal.
The video interface of said projecting apparatus interface module 105 adopts a kind of parallel bus video interface of supporting hot plug; This interface improves the I80 parallel bus interface of existing standard; Keep original choosing of bus, reset, the data-signal of data/order, reading and writing control signal and parallel bus, increase access detection signal and synchronizing signal.The access of said video interface detects the pull-up resistor that a 100k is arranged on the pin; Insert detection signal and be defaulted as high level, after projecting apparatus inserted portable terminal, projecting apparatus inserted this and detects the pin output low level; After baseband module 101 detects this access signal; Through signal switching circuit total line traffic control and data/address bus are switched to the interface of projecting apparatus from LCM module 104, to projecting apparatus output reset signal, after projecting apparatus detects this reset signal; Carry out system initialization, start the back and communicate according to the I80 bus communication protocol.Synchronizing signal is the synchronous control signal that projecting apparatus sends portable terminal.
In the utility model preferred embodiment, be that projection mobile phone describes with the projection portable terminal: said baseband module 101 is spreadtrum baseband chip SC6600R, and said multimedia processing module 103 is the multimedia processor MV6600C of the prestige of rubbing.SC6600R reads the RMVB video file on the memory module through SPI1, sends MV6600C to through SPI2.
The clock of MV6600C is provided by external 26MHz crystal, and reset signal comes from baseband chip SC6600C.The electric power system block diagram of MV6600C is as shown in Figure 3; Wherein this power supply and ADC power supply provide 1.2V power supply by the adjustable DC-DC RT8009 of voltage; PLL power supply PLL1.2V and SDPLL power supply SDPLL1.2V are provided by the LDO RP103N121D of 1.2V; SD power supply VCC_SD is provided by the LDO RT919325PU5 of 2.5V, and I/O power supply MVCC and analog power AVCC are provided by the LDORT919328PU5 of 2.8V.The MV6600C electrifying timing sequence requires the 1.2V power supply to be not later than 2.5V and 2.8V power supply, and the last electric control signal MV_PO of MV6600C comes from the GPIO of baseband chip SC 6600R.Because the power-on time of DC-DC RT8009 is long for about 200us, and other 3 LDO power-on times are about 20us, and is errorless for guaranteeing electrifying timing sequence, needs to increase a RC delay circuit.Get R=10k Ω, C=1uF, delay time Td=R*C=10ms.Like this, the MV_PO signal directly links to each other with the pin that enables of RT8009 and RP103N121D, and links to each other through the pin that enables of RC delay circuit with RT919325PU5 and RT919328PU5 then, can guarantee effectively powering on of MV6600C.
Through the foregoing description, the purpose of the utility model is by in full force and effect having reached.The personage who is familiar with this skill should be understood that the utility model includes but not limited to the content of describing in the top embodiment.Anyly do not depart from the function of the utility model and the modification of structural principle all will be included in the scope of claims.
Claims (9)
1. a projection portable terminal of supporting the RMVB video format comprises baseband module, memory module, LCM module, audio-frequency module, it is characterized in that, also comprises: multimedia processing module and projecting apparatus interface module, wherein,
Said baseband module is used to accomplish the control of the reading of RMVB video file, associated multimedia module and drives the LCM module and shows output;
Said memory module is used to store the RMVB video file;
Said audio-frequency module is used for audio frequency output;
Said multimedia processing module is used to accomplish the audio/video decoding of RMVB video file, outputting video signal and audio signal;
Said projecting apparatus interface module comprises signal switching circuit and video interface, and wherein, signal switching circuit is used to accomplish the output of vision signal between LCM module and projecting apparatus and switches, and video interface links to each other with projecting apparatus, video is outputed to projecting apparatus output show.
2. the projection portable terminal of support RMVB video format as claimed in claim 1; It is characterized in that; Said baseband module reads the RMVB video file through I80 interface, SPI interface or SD parallel interface from memory module, and RMVB video file data are transferred to the multimedia processing module through the SPI interface.
3. according to claim 1 or claim 2 the projection portable terminal of support RMVB video format; It is characterized in that; Said multimedia processing module is decoded to the RMVB video file data that receive, and exports yuv video signal and audio signal respectively, wherein; The yuv video signal is transferred to baseband module through the CCIR interface, and baseband module outputs to the LCM module with the yuv video signal that receives with the RGB form and shows.
4. the projection portable terminal of support RMVB video format as claimed in claim 3 is characterized in that the signal switching circuit of said projecting apparatus interface module adopts the highway switching of high bandwidth.
5. the projection portable terminal of support RMVB video format as claimed in claim 4 is characterized in that the video interface of said projecting apparatus interface module adopts a kind of parallel bus video interface of supporting hot plug.
6. the projection portable terminal of support RMVB video format as claimed in claim 5; It is characterized in that; Said parallel bus video interface improves the I80 parallel bus interface of existing standard; Keep original choosing of I80 parallel bus, reset, the data-signal of data/order, reading and writing control signal and parallel bus, and increase access detection signal and synchronizing signal.
7. like claim 1, the projection portable terminal of 2,4,5 or 6 described support RMVB video formats is characterized in that said memory module is the T-flash of outside expansion.
8. the projection portable terminal of support RMVB video format as claimed in claim 3 is characterized in that said memory module is the T-flash of outside expansion.
9. the projection portable terminal of support RMVB video format as claimed in claim 7 is characterized in that said projection portable terminal is a mobile phone.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206837479U CN202127441U (en) | 2010-12-23 | 2010-12-23 | Projection mobile terminal capable of supporting real media variable bitrate (RMVB) video format |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206837479U CN202127441U (en) | 2010-12-23 | 2010-12-23 | Projection mobile terminal capable of supporting real media variable bitrate (RMVB) video format |
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| CN202127441U true CN202127441U (en) | 2012-01-25 |
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| CN2010206837479U Expired - Fee Related CN202127441U (en) | 2010-12-23 | 2010-12-23 | Projection mobile terminal capable of supporting real media variable bitrate (RMVB) video format |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103176935A (en) * | 2011-12-23 | 2013-06-26 | 闻泰通讯股份有限公司 | Parallel bus interface communication method supporting hot plugging |
| CN103365620A (en) * | 2013-06-03 | 2013-10-23 | 陈飞生 | Intelligent split screen display available mobile terminal |
| CN106060492A (en) * | 2016-06-28 | 2016-10-26 | 联想(北京)有限公司 | Projection method and device |
-
2010
- 2010-12-23 CN CN2010206837479U patent/CN202127441U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103176935A (en) * | 2011-12-23 | 2013-06-26 | 闻泰通讯股份有限公司 | Parallel bus interface communication method supporting hot plugging |
| CN103365620A (en) * | 2013-06-03 | 2013-10-23 | 陈飞生 | Intelligent split screen display available mobile terminal |
| CN106060492A (en) * | 2016-06-28 | 2016-10-26 | 联想(北京)有限公司 | Projection method and device |
| CN106060492B (en) * | 2016-06-28 | 2018-11-13 | 联想(北京)有限公司 | A kind of projecting method and device |
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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: 20120125 Termination date: 20131223 |