CN102377891A - Method for achieving high definition function on low end mobile phone platform - Google Patents
Method for achieving high definition function on low end mobile phone platform Download PDFInfo
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- CN102377891A CN102377891A CN2010102504669A CN201010250466A CN102377891A CN 102377891 A CN102377891 A CN 102377891A CN 2010102504669 A CN2010102504669 A CN 2010102504669A CN 201010250466 A CN201010250466 A CN 201010250466A CN 102377891 A CN102377891 A CN 102377891A
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Abstract
The invention discloses a method for achieving a high definition function on a low end mobile phone platform. The FM (frequency modulation) is connected with a mobile phone base band chip BB by an I2C interface; a camera lens is connected with the mobile phone base band chip BB by a CAMERA dedicated interface and a Bluetooth PCM (Pulse-Code Modulation) interface; a USB (Universal Serial Bus) is connected with the mobile phone base band chip BB by a USB interface; WIFI (Wireless Fidelity) is connected with the mobile phone base band chip BB by a SDIO (Secure Data Input and Output) interface; a microphone is connected with the mobile phone base band chip BB by a MIC (Microphone) interface; a memory card is connected with the mobile phone base band chip BB by a SDIO port; and a screen and a memory are respectively connected with the mobile phone base band chip BB by a CPU (Central Processing Unit) interface. Furthermore, a HDMI (High-Definition Multimedia Interface) interface employs the CPU interface, so the HDMI interface can be multiplexed with a screen interface or a memory interface; and a HDMI interface chip is controlled by the I2C interface or a SPI (serial peripheral interface). In the invention, with regard to the HDMI interface function achieved on the low end mobile phone platform, a consumer mobile phone can employ all the advantages brought by Ethernet connection through the interface; and simultaneously, the problem in slow speed of surfing the internet on the mobile phone, in particular on the low end mobile phone is solved.
Description
Technical field
The present invention relates to the method for the high cleaning function of a kind of low-end mobile phone Platform Implementation, relate in particular to a kind of method that can on the low-end mobile phone platform, realize mobile phone and height cleaning functions such as DTV, projecting apparatus.
Background technology
Along with HD high-definition format gained popularity, can see the various films of HDTV high definition form everywhere, all panel TVs, computer main board, projecting apparatus all have the HDMI interface configuration.The household video camera of the main flow of each up-to-date release of big image company has all been stamped " Full-HD " printed words.High definition, the life that these two words have been deep into us has suffered.And have the very big market as maximum popularization the in the whole world after the darkest digital product also only has the few high-end smart mobile phone to have the HDMI interface obviously at present as HDMI tie-mobile phone.The platform that at present exhausted big portion mobile phone still compares low side does not also have scheme to realize this interface function at present.This scheme is exactly on the low-end mobile phone platform, to realize the HDMI interface function possessing following advantage.
1, make the exportable audio frequency and video of low-end mobile phone see to the DTV high-definition movie simultaneously the audio frequency and video of computer also can be transferred to mobile phone and see a film simultaneously that video files can be kept in the mobile phone memory card again.Mobile phone also can with digital camera, projecting apparatus etc. or even vehicle electronics on have the HDMI interface equipment and join and carry out the transmission of video voice data.
2, consumer's mobile phone can utilize HDMI interface online to solve the present stage mobile phone slow problem of low-end mobile phone networking speed especially.
3, the transfer function, the mobile phone peripheral hardware expanded function that have improved low-end mobile phone multimedia function, particularly video, audio frequency aspect greatly are greatly improved.
4, the relative TV-OUT function of mobile phone analog signal form before, more the fast quality is higher more stable to allow transmission speed.
5, make mobile phone and apparatus such as computer cooperate closelyr, promoted user's experience greatly.
6, relative TV-OUT and DVI interface connecting line before will still less user-friendly operation.
7, adopt the relative TV-OUT of hot plug technology, DVI interface more user-friendly.
8, lower with respect to plug-in video card chip of middle and high end mobile phone or mobile phone base band chip BB integrated digital Presentation Function modular design scheme cost, design simple possible more.
9, the backward compatible DVI interface of HDMI that is to say that you can use HDMI equipment to connect DVI (Digital Visual Interface) equipment, and a patchcord only need be used in the centre.After the user rose comprehensively and arrives new HDMI system, former DVI equipment still can continue to use.
Summary of the invention
To the deficiency of prior art, the object of the present invention is to provide and a kind ofly can realize on the low-end mobile phone platform that the ancillary equipment of mobile phone and band HDMI interfaces such as DTV, projecting apparatus is connected.Farthest reduced conventional audio video transmission process transmission line quantity; Exportable audio frequency and video is seen high-definition movie to DTV; The audio frequency and video of while computer also can be transferred to mobile phone and see a film, and video files can be kept in the mobile phone memory card again simultaneously.Mobile phone also can with digital camera, projecting apparatus etc. or even vehicle electronics on have the HDMI interface equipment and join and carry out the transmission of video voice data.Make consumer's mobile phone can utilize HDMI interface online to solve the present stage mobile phone slow problem of low-end mobile phone networking speed especially.
The present invention realizes through following technical scheme:
The method of the high cleaning function of low-end mobile phone Platform Implementation, described FM joins through MIC interface and mobile phone base band chip BB through SDIO interface, microphone through USB interface, WIFI through CAMERA special purpose interface, bluetooth pcm interface, USB through I2C interface, camera; Storage card joins with mobile phone base band chip BB respectively through cpu i/f through SDIO mouth, screen and memory.And the HDMI interface can be multiple shared with screen interface or memory interface with cpu i/f, through I2C or SPI interface control HDMI interface chip.Data flow has two kinds of forms: 1, mobile phone base band chip BB changes into the HDMI data stream format to transfer of data to the HDMI interface chip from the cpu i/f (cpu i/f of screen also can depend on that cpu i/f shared) of T card reading video data through memory, is transferred on the HDMI ancillary equipment through the HDMI interface connector again; 2, from HDMI equipment transmitting data to the HDMI interface chip again to cpu i/f deposit the mobile phone storage card through mobile phone base band chip BB or directly video playback to the mobile phone screen.
The HDMI interface realizes that on the low-end mobile phone platform groundwork principle is following:
What 1, described data-signal in the HDMI interface adopted is TMDS (Transition Minimized Differential Signaling) transition minimized differential signaling agreement.This Data Transport Protocol once was widely used on the DVI interface.And the data-signal on the HDMI interface has also been continued to use this agreement.This consultation converts standard 8 bit data into 10 signals, and in transfer process, uses differential to transmit.Differential transmits this technology and also once was widely used in the transfer of data of gigabit Ethernet.When the transmission of HDMI interface sound intermediate frequency, video data, can use three TMDS data channel.Video information is changed 24 continuous pixel datas of city when transmitting, each clock cycle can be transmitted 10 data.Pixel clock periodic transfer ratio is greatly about between the 25MHz to 165MHz.In general the pixel clock transmission ratio of standard N TSC (National Television Standards Committee) 480i interlace signal is approximately 13.5MHz.If the ratio of transmission signals is less than 25MHz, HDMI can adopt the Automatic Cycle technology to fill up code check, the code check of signal is risen to the level of 25MHz.And the highest per second of HDMI interface can transmit the data volume of 165M pixel.In following a period of time, be enough to deal with high code check, the signal transformation task of high data flow household electrical appliance.
2, the coded system of the described vision signal that in HDMI, is adopted is a rgb format, and like YCbCr 4:4:4 or YCbCr 4:2:2 form, their each pixel all is 24.YCbCr is a kind of form of digital video signal, and it and YPbPr form are similar.(component of DVD player output at present all is to use the YCbCr/YPbPr form) this video signal standard just we often said " YUY ".The meaning of Y is brightness, and it does not have the information of color of image.Just be responsible for black and white information in the document image.Cb is the difference value (B-Y) of image Smalt and brightness, and Cr is the difference value (R-Y) between redness and the brightness.Y, Cb, the sample rate when these three values of Cr have just defined video coding so.And the sample rate when using NTSC or pal mode, i.e. 13.5MHz are represented in " 4 " in the preceding text.Our 4:4:4 of seeing so, the meaning be exactly the coded sample rate of Y, Cb, Cr respectively be 13.5MHz.And the sample rate of Cb, Cr respectively is 6.75MHz in the 4:2:2 form that we see.It is better just clearly to distinguish in top two YCbCr forms which video quality so now.
3, described in the HDMI interface, audio signal can be used 2 to 8 sound channels, and the sample rate of each sound channel is 192KHz.The HDMI interface also provides DDC (Display DataChannel) DDC in addition, and it can send configuration information and data format information to video receiving apparatus.Receiving system can read these information that strengthens expanded display recognition data (E-EDID).Last HDMI interface also provides CEC (Consumer Electronics Control) consumer electronics control channel, can control the work of audio-visual equipment through this passage.
4, described HDMI Ethernet passage: for the HDMI link increases the express network function, need not use other Ethernet cables, can make full use of IP-based equipment.HDMI Ethernet passage adds special-purpose data channel in HDMI connects; Provide bidirectional high speed network function (to use HDMI interface DLNA (DIGITAL LIVING NETWORKALLIANCE) before up to 100Mb/sec; UPnP (Universal Plug and Play); IPTV (Internet ProtocolTelevision), LiquidHD
TMMust just can be connected to the Internet through the grid line of special use, for using HDMI interface DLNA afterwards, UPnP, IPTV, LiquidHD
TMCan directly surf the Net through the netting twine of DTV through the HDMI interface).
The present invention is for realizing the HDMI interface function on the low-end mobile phone platform, consumer's mobile phone has solved the especially slow problem of low-end mobile phone networking speed of existing solution mobile phone simultaneously again through all advantages that this interface can utilize the Ethernet connection to bring.Compatible existing and the various IP-based network solutions of consumption electronic product from now on comprise DLNA, IPTV, LiquidHD and UPnP.Several associated devices can be shared a Internet line.The scheme of the overwhelming majority in the market all is that plug-in video card chip or mobile phone base band chip (BB) integrated digital Presentation Function module are implemented on the high-end cell phone platform; The very high software of these two kinds of scheme costs is realized comparatively difficulty of more difficult marketing; And cost of the present invention has more advantage; Realize simplyr, the multimedia function of greatly having enriched low-end mobile phone has improved the autgmentability of mobile phone.
Description of drawings
Fig. 1 realizes HDMI interface function system block diagram on the low-end mobile phone platform of the present invention.
Embodiment
How further specify the present invention below in conjunction with accompanying drawing realizes:
The method of the high cleaning function of low-end mobile phone Platform Implementation, described FM joins through MIC interface and mobile phone base band chip BB through SDIO interface, microphone through USB interface, WIFI through CAMERA special purpose interface, bluetooth pcm interface, USB through I2C interface, camera; Storage card joins with mobile phone base band chip BB respectively through cpu i/f through SDIO mouth, screen and memory.And the HDMI interface therefore can be multiple shared with screen interface or memory interface with cpu i/f, through I2C or SPI interface control HDMI interface chip.Data flow has two kinds of forms: 1, mobile phone base band chip BB changes into the HDMI data stream format to transfer of data to the HDMI interface chip from the cpu i/f (cpu i/f of screen also can depend on that cpu i/f shared) of T card reading video data through memory, is transferred on the HDMI ancillary equipment through the HDMI interface connector again; 2, from HDMI equipment transmitting data to the HDMI interface chip again to cpu i/f deposit the mobile phone storage card through mobile phone base band chip BB or directly video playback to the mobile phone screen.
The present invention is for realizing the HDMI interface function on the low-end mobile phone platform, consumer's mobile phone has solved the especially slow problem of low-end mobile phone networking speed of existing solution mobile phone simultaneously again through all advantages that this interface can utilize the Ethernet connection to bring.Compatible existing and the various IP-based network solutions of consumption electronic product from now on comprise DLNA, IPTV, LiquidHD and UPnP.Several associated devices can be shared a Internet line.
Claims (6)
1. the method for the high cleaning function of low-end mobile phone Platform Implementation, it is characterized in that: described FM joins through MIC interface and mobile phone base band chip BB through SDIO interface, microphone through USB interface, WIFI through CAMERA special purpose interface, bluetooth pcm interface, USB through I2C interface, camera; Storage card joins with mobile phone base band chip BB respectively through cpu i/f through SDIO mouth, screen and memory.
2. the method for the high cleaning function of low-end mobile phone Platform Implementation according to claim 1 is characterized in that: described HDMI interface can be multiple shared with screen interface or memory interface with cpu i/f, through I2C or SPI interface control HDMI interface chip.
3. the method for the high cleaning function of low-end mobile phone Platform Implementation according to claim 1; It is characterized in that: the method data flow of the high cleaning function of described realization has two kinds of forms: 1, mobile phone base band chip BB changes into the HDMI data stream format to transfer of data to the HDMI interface chip from the cpu i/f (cpu i/f of screen also can depend on that cpu i/f shared) of T card reading video data through memory, is transferred on the HDMI ancillary equipment through the HDMI interface connector again; 2, from HDMI equipment transmitting data to the HDMI interface chip again to cpu i/f deposit the mobile phone storage card through mobile phone base band chip BB or directly video playback to the mobile phone screen.
4. the method for the high cleaning function of low-end mobile phone Platform Implementation according to claim 1 is characterized in that: describedly when the transmission of HDMI interface sound intermediate frequency, video data, can use three TMDS data channel.
5. the method for the high cleaning function of low-end mobile phone Platform Implementation according to claim 1; It is characterized in that: described video information is converted into 24 continuous pixel datas when transmitting; Each clock cycle can be transmitted 10 data, and pixel clock periodic transfer ratio is greatly about between the 25MHz to 165MHz.
6. the method for the high cleaning function of low-end mobile phone Platform Implementation according to claim 1 is characterized in that: described several associated devices can be shared a Internet line.
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| CN2010102504669A CN102377891A (en) | 2010-08-11 | 2010-08-11 | Method for achieving high definition function on low end mobile phone platform |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102857805A (en) * | 2012-09-18 | 2013-01-02 | 深圳市路畅科技股份有限公司 | Method and device for processing signals of mobile terminal |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101030029A (en) * | 2006-03-03 | 2007-09-05 | 乐金电子(中国)研究开发中心有限公司 | Mobile telecommunication equipment with projection function |
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- 2010-08-11 CN CN2010102504669A patent/CN102377891A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101030029A (en) * | 2006-03-03 | 2007-09-05 | 乐金电子(中国)研究开发中心有限公司 | Mobile telecommunication equipment with projection function |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102857805A (en) * | 2012-09-18 | 2013-01-02 | 深圳市路畅科技股份有限公司 | Method and device for processing signals of mobile terminal |
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Application publication date: 20120314 |