Summary of the invention
The technical problem to be solved in the present invention provides a kind of multi-function TV set, and this multi-function TV set has printing function and expandability preferably.
Specifically, a kind of multi-function TV set provided by the invention, comprise video channel, voice-grade channel and signal processor, it is characterized in that, also comprise the Streaming Media controller that is used to handle the multifunctional digital data flow that is connected respectively with described video channel, voice-grade channel; And, the digital-code printer that is connected with described Streaming Media controller;
Described Streaming Media controller further comprises:
Internal bus, and by the interconnective controller of described internal bus, USB interface, USB-OTG interface, Video Decoder and audio decoder;
By described internal bus, the audio frequency and video digital signal that described controller reads in described USB interface or USB-OTG interface is behind described Video Decoder and audio decoder decode, by described video channel and/or voice-grade channel output; Described video signal also can be printed by the digital-code printer that is connected with described USB-OTG interface after described video decoder decodes.
For above-mentioned multi-function TV set, can handle media signal in the following manner: described controller detects described USB interface and/or USB-OTG interface, judge whether described USB interface and/or USB-OTG interface have the USB device of connection or card reader whether to be connected with digital card, when having the USB device connected and/or digital card, judge whether to support this equipment and/or digital card, when this equipment of support and/or digital card, read in digital audio-video signal from described USB device and/or digital card.
Described multi-function TV set is in specific implementation process, and described Streaming Media controller also comprises the memory that is connected to described internal bus, is used to store the control program that offers described controller and/or stores the data that described controller is handled.
Above-mentioned memory comprises random asccess memory and program storage, and wherein, described program storage is used for storage control program, and described random asccess memory is used to store the data that described controller is handled.
Described Streaming Media controller also comprises first digital to analog converter that is connected to described audio decoder, is used for the digital audio and video signals of described audio decoder output is converted into simulated audio signal.
Described Streaming Media controller also comprises second digital to analog converter that is connected to described Video Decoder, is used for the digital video signal of described Video Decoder output is converted into analog video signal.
For realizing Energy Saving Control, described multi-function TV set also comprises the power-supply controller of electric that is connected between described multi-function TV set power supply and the described Streaming Media controller, the control end of described power-supply controller of electric connects described radio frequency signal processing equipment, by the break-make of described radio frequency signal processing equipment control by the described Streaming Media controller of described power controller controls power supply circuits.
In addition, for above-mentioned any multi-function TV set, described Streaming Media controller also comprises the receiver of remote-control sytem that is connected to described internal bus, is used to receive the remote signal of the described multi-function TV set of control.
In practice, described internal bus, and controller, Video Decoder and audio decoder are integrated into a chip.More particularly, described chip employing model is the chip of AML3278; It is the chip of OTG242LP that described USB interface adopts model.
Above-mentioned any multi-function TV set, described video channel, voice-grade channel and signal processor are respectively video channel, voice-grade channel and the signal processor of Analog signals or digital signal.
Compared with prior art, have the following advantages owing to multi-function TV set of the present invention:
1, has printing function.Support the PictBridge agreement, directly the linking number code printer can be printed digital photograph.
2, the high definition of demonstration of the high definition of picture and video is play and is shown.The present invention adopts the up-conversion process of video, for picture file, directly exports with the pixel of 1920*1080 and 1280*720; To the video file of common VCD/DVD image quality, through the up-conversion process of Scaler, with the image quality output of 720P or 1080i.
3, has extensibility.Adopt the USB-OTG technology to realize multiplexed port on TV, both can connect printer and also can connect the USB memory device, realized the versatility of port; Adopt USB Hub technology, make television set can possess 3 USB interface and 1 digital card, thus can realize between a plurality of equipment file duplicate unloading.
Embodiment
Technical scheme provided by the invention can make the multi-function TV set in the present family realize decoding and broadcast to the video file in the various USB of the being stored in mobile devices, and the photo of digital camera browse printing.
At first with reference to figure 2, this figure is in a plurality of embodiment block diagrams of multi-function TV set provided by the invention.The multi-function TV set that Fig. 2 describes comprises video channel 12, voice-grade channel 13, signal processor 11 and the radio frequency interface 10 that is used to import normal tv signal, and these unit are features that existing television set all has.Yet, the multi-function TV set that Fig. 2 describes also comprises the Streaming Media controller 20 that is used to handle the multifunctional digital data flow that is connected respectively with described video channel 12, voice-grade channel 13, the key of this Streaming Media controller 20 has provided can read in the data of the audio and video stream media of various forms or protocol encapsulation by the USB device of present extensive use, thereby makes described multi-function TV set have more function.And these Streaming Media controller 20 all right printing device that directly connect realize the photo printing function to the digital camera that is connected such as digital-code printer.
Streaming Media controller 20 in this example can be understood with reference to figure 3.It further comprises internal bus 210 and by described internal bus 210 interconnective controllers 201, USB interface 203, USB-OTG interface 204, Video Decoder 207 and audio decoder 208, program storage 205, random asccess memory 206 and digital to analog converter 209.
USB interface 203, USB-OTG interface 204 can connect card reader, can read in the audio-video signal of in the number card of coupling, storing with this card reader by described card reader, it is media signal, modal card reader such as HDD disk read-write device, DVD reader etc., this card reader can directly be exported usb signal in this example.Therefore, for present embodiment, if on described USB interface, be connected with USB device, for example, USB flash disk or MP3 player just can pass through described internal bus, the audio frequency and video digital signal of described USB interface 203 being read in by described controller 201, after described Video Decoder 207 and audio decoder 208 decodings, by described video channel 12 and voice-grade channel 13 outputs, certainly also can be in the reality only by corresponding video or the audio signal of one of them passage output.USB interface connects usb hub (HUB), draws a plurality of USB interface and a card reader interface by usb hub.Thereby can realize between a plurality of equipment file duplicate unloading.
Be a Streaming Media controls playing process instance provided by the invention below.This process is with reference to Figure 11.At first Streaming Media controller 20 initialization, display background and operating function interface on screen, this moment, the user can use the function key on the television set to select the streaming media playing operation.Then the terminal of controller 201 by USB interface detects and judges whether described USB interface 203 has the USB device of connection, when the USB device that connects to some extent, continue to judge whether to support this equipment, whether support this equipment to realize by the type of judgment device or the agreement or the form of storage The data.When supporting this equipment, read in digital audio-video signal from described equipment, reading in just can be according to its form to its decoding broadcast behind the digital audio-video signal.Otherwise the prompting nonrecognition is also released this equipment.Also can select the chance play to the user this moment, and for example, the file of MP3, JPEG and WMA form can be discerned and play to control, just can select for the user provides broadcast format, selected the form broadcast of playing by the user.When the USB device that connects to some extent is digital camera, to read in digital video signal and, export according to the PrictBridge agreement to its broadcasts of decoding, the user also can the selective printing digital photograph.
Need explanation, the startup of playing can trigger beginning by USB interface, promptly when described USB interface connects USB device, described USB interface sends notification signal to described controller, this signal can transmit by the interrupt signal line of controller 201 or transmit by certain bar data wire, and at this moment whether controller 201 will be inquired about certain bar data wire and be arrived by signal.After described controller receives described notification signal, judge whether to support this equipment, when this equipment of support, read in digital audio-video signal from described USB device, decoding is play then.
Equally, also can send signal enabling to described controller 201 by the card reader that connects USB device or digital card, under this state, the notification signal that described USB interface 203 sends separately to described controller 201, after described controller 201 receives described notification signal, judge whether to support this equipment and/or digital card, when this equipment of support and/or digital card, read in digital audio-video signal from described USB device and/or digital card.Certainly, the above-mentioned signal that reads in also can be selected to play, and also can play simultaneously, plays if there is memory also can store the back certainly.Can also selective printing for described vision signal.
In other embodiments of the invention, do not have program storage 205, random asccess memory 206 and digital to analog converter 209 in the described Streaming Media controller 20, still, in the described embodiment of Fig. 3, increased these unit.Wherein, program storage 205 is used for storage control program, makes things convenient for the upgrading of control program like this, for example when increasing the Media Stream of the extended formatting that can play or agreement, just needs the control program audit can discern and play the Streaming Media of this form; In this example, described program storage 205 also is used to deposit important and/or fixing parameter, and for example protocol parameter although these parameters can be stored together with control program, also can be deposited separately, with convenient upgrading; Described random asccess memory 206 is used to store the data that described controller is handled, and promptly uses as the memory in the common computer.
It is to be noted, described multi-function TV set can be the television set of present Analog signals, it also can be the television set of processing digital signal, described like this video channel 12, voice-grade channel 13 and signal processor 11 can be video channel, voice-grade channel and the signal processors of Analog signals signal, also can be video channel, voice-grade channel and the signal processor of processing digital signal signal.In the embodiment shown in fig. 3, belong to the previous case, therefore, signal processor 11 is a radiofrequency signal processor 11 accordingly just.But the audio decoder 208 in should example is the digital audio decoding device, therefore, in this example, described Streaming Media controller 20 also comprises the digital to analog converter 209 that is connected to described audio decoder 208, is used for that the digital audio and video signals that described audio decoder is exported is converted into simulated audio signal and is exporting to described voice-grade channel 13.The signal of the Video Decoder output in this example is an analog signal, so can directly be connected with described video channel 12.In another embodiment of the present invention, the signal of Video Decoder 207 outputs is a digital signal, at this moment, another digital to analog converter (not drawing among Fig. 3) that is connected to described Video Decoder 207 also is set in described Streaming Media controller 20, is used for the digital video signal of described Video Decoder output is converted into analog video signal.
Consider the convenience of actual use, traditional remote-receiver also is set among the embodiment shown in Figure 3, this device in the conventional mode, remote-receiver directly is set in the signal processing apparatus 11, but in this example, be operationally connected to the USB device of described USB interface 203 for convenience, another remote-receiver also is arranged in the described Streaming Media controller simultaneously, it is the receiver of remote-control sytem that is connected to described internal bus 210 202 shown in Fig. 3, be used to receive the Streaming Media remote signal of the described multi-function TV set of control that the remote controller 30 beyond the television set transmits, the basic remote control of the realization of this distant control function and television set partly walks abreast, and works simultaneously.If specific to the chip of Fig. 4, remote signal is handled in AML 3278, directly controls every function of AML 3278.Because it is conventional art that television set adopts telecontrol engineering, this no longer auspicious stating.
The multi-function TV set of the described embodiment of Fig. 3 both can be used as general television set and had used, and also can be used as multi-function TV set and used.Like this, when using as general television set, the equipment work that does not just need described Streaming Media controller and connection thereof is to save electric energy.For this reason, in this example, between described multi-function TV set power supply 18 and described Streaming Media controller 20, one power-supply controller of electric 19 is set also, consider that radio frequency signal processing equipment 11 belongs to essential part, therefore the control end with described power-supply controller of electric 19 connects described radio frequency signal processing equipment 11, pass through described power-supply controller of electric 19 by described radio frequency signal processing equipment 11 controls, and then control the break-make of described Streaming Media controller 19 power supply circuits, thereby determine whether described Streaming Media controller 20 works.Power-supply controller of electric 19 in this example adopts relay, also can adopt logic drive circuit, because these technology belong to current techique, this no longer auspicious stating.
When the present invention specifically uses, can adopt the higher chip of integrated degree to realize, for example can be with described internal bus 210, and controller 201, Video Decoder 207 and audio decoder 208 just are integrated into a chip, in the reality, integrated level is high more, the chip that promptly integrated function is many more, ancillary circuit functionality is perfect more, helps more improving the new function of described multi-function TV set and reducing cost.For example concrete realization is with reference to figure 4, the embodiment logical circuitry of Streaming Media controller 20 promptly shown in Figure 3.Fig. 4 can derive a lot of concrete examples, and Fig. 3 has just described an example of specific implementation.The Core Feature of scheme shown in Figure 4 is the MPEG1/MPEG2/MPEG4 decoding, JPEG/MP3/WMA decoding, USB 2.0 interfaces (being not limited to aforesaid way in other embodiments of the invention), multiple digital reading of blocking.AML 3278 chips in this scheme realize that the OTG242LP chip is the interface chip of USB 2.0 versions to the decoding of data and the coding of audio frequency and video.
Described AML 3278 is a fully-integrated media processing chips, and its reference logic Fig. 5 on the basis of conventional flow media play system, has further realized the high definition playing function of digital photo print and picture.It can support the audio/video decoding of many types to use, and the support to hard disk, digital camera, MP3 player and other external digital consumer products for example is provided.AML 3278 has integrated Full Featured MPEG-1, MPEG-2 and MPEG-4 decoding function.Controller is built-in 32 bit CPUs and two built-in AMASIC risc processors, has special equipment and handles the audio frequency and video digital signal.Provide a high-speed interface simultaneously, to support USB 2.0 chips, to connect popular USB device, as hard disk, flash disk, digital camera and MP3 player.
AML 3278 has inherited high performance processing system for video, is used for the enhancement process and the up-conversion process of video, support DVD up-convert into 720p and 1080i to television system ground solution.The up-conversion process of video for picture file, is directly exported with the pixel of 1920*1080 and 1280*720; For the video file of common VCD/DVD image quality,,, make the high definition demonstration of picture and the high definition of video play demonstration with the image quality output of 720P or 1080i through the up-conversion process of Scaler.AML 3278 has adopted audio A MRISCTM compacting instruction set processor, thereby can support digital audio decoding.The audio frequency that microprocessor is supported all existence is form frequently, MPEG for example, and LPCM, DolbyAC-35.1, HDCD, MP-3 and WMA etc. have enough flexibilities simultaneously and deacclimatize new audio standard.Adopt 64 dsp processor, improve parallel processing capability, in the unit interval, handle more data, guarantee to handle in time the mass data file.
Simultaneously, AML 3278 has initialization, DVD driving and other the system applies of 32 embedded host CPU control system.The interface of AML 3278A/V processor special use is connected with all external devices, comprises ATAPI, and USB interface chip, audio frequency are counted film conversion and memory.A large amount of GPI/O mouths can be used for controlling prepass demonstration and other various tasks.Program storage allows to be shared to alleviate design cost by the equipment of front and back.Simultaneously, built-in 32 bit CPUs and two built-in AMASIC risc processors have special equipment and have alleviated design cost in various media application.
USB interface provides sufficiently high speed to remove to connect outside USB interface chip.External USB interface chip can be supported the interface of 2 high speed USBs.AML 3278 firmwares have comprised that basic USB drives, and can support digital equipment with oneself, HUB, MS equipment, PTP agreement and PictBridge agreement.Can print picture by coupled digital-code printer.AML 3278 firmwares are also supported the document copying unloading between multifile system and a plurality of USB device.
Among Fig. 4, AML 3278 is connected with TDOTG242LP's, with reference to figure 6.Behind the external USB equipment access system, send interrupt signal by TDOTG242LP to AML 3278, AML 3278 starts working, reading of data, and the type of the peripheral hardware of judgement access, for example portable hard drive or digital camera etc. read data in the circumscribed USB equipment by TDOTG242LP then.TDOTG242LP is connected with extraneous USB device, with reference to Figure 10.Native system adopts USB-OTG technology and HUB switching technique.The USB-OTG technology realizes multiplexed port, not only can connect printer but also can connect the USB memory device.Under the prerequisite that port does not increase, realized the versatility of port.USB Hub technology realizes the switching of port, makes television set can possess 3 USB interface and 1 digital card.Thereby can realize between a plurality of equipment file duplicate unloading.
Among Fig. 4, AM3278 is connected with reference to figure 7, Fig. 8 with random asccess memory SDRAM and program storage, and Fig. 7 adopts the random asccess memory SDRAM of single 4M*16 position, and Fig. 8 adopts the program storage of 1M*16Bit.Decoder and host CPU (AML 3278 is built-in) are by external synchronous random access memory SDRAM, and it can receive M1_SDRAM interface or M2_SDRAM interface, realize decoding and handle MPEG video and voice data.
Among Fig. 4, the output of audio frequency adopts the CS4334 analog-digital chip to realize the digital-to-analogue conversion of audio frequency, and AML 3278 realizes left and right acoustic channels, stereo and quiet control by internal bus control CS4334.The connected mode of AML 3278 and CS4334 is with reference to figure 9.
Among Fig. 4, UTC4558 or LM833 are as audio-frequency power amplifier.
Manipulate process for one that is the multi-function TV set shown in the embodiment of the invention below.Press remote controller,, the state of TV is switched to the streaming media playing state, promptly connect the power supply and the audio frequency and video passage of Streaming Media module by the software control of TV.After USB device inserted USB interface, can show the subregion situation of this USB device, if there is not subregion, then directly Show Picture, music, film, sound draw unification and 5 options are set etc.By " affirmation ", enter the file or the file of next stage in each grade menu, filename can then by " affirmation ", can be realized the broadcast of above various files with Chinese character or English display.When browsing the JPEG picture, access actions menu, click Printing Qptions, can realize the printing of digital photograph.
From the above, utilize scheme provided by the invention, in conjunction with known technology, make multi-function TV set provided by the invention can realize various function, for example watch JPEG PNG TIFF GIF the BMP picture, listen MP3 and WMA music, the limit sees that the picture limit listens the MP3 music, see MPEG1 MPEG2 the movie file of MPEG4, for example comprise * .MP3 * .WMA * .JPG * .JPEG * .AVI * .DIVX * .MPG * .DAT * .VOB etc., watch text.Realize the demonstration of high definition digital photograph, the output format of 1080i makes digital photograph have higher resolution.When having realized a plurality of USB device and digital card, the HUB built-up circuit supports that the USB-OTG circuit has guaranteed that LPT not only can connect printer but also can connect the digital memory device of USB.Support multiple usb protocol, for example Mass Storage, PTP agreement and USB-PictBridge agreement, the mobile device of the multiple USB that can plug into comprises: flash disk, portable hard drive, digital camera, card reader, MP3 player, digital-code printer.Can be by the connecting line of USB, the linking number code printer, and print colored photo.Can stick into row to multiple number and read, the card reader that carries by TV realize the reading and play of multiple digital card (comprise SD MMC CF XD MS MS pro MS Pro Duo RSMMC Ms Duo Mini SD MD SM).
The above only is a preferred implementation of the present invention; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Chip shown in Figure 4, AML 3278 detailed performance and use data are with reference to the specification of U.S. Amlogic company; The particulars of chips such as OTG242LP also see also corresponding specification.