CN102137255B - Portable decoder as well as display method and display system thereof - Google Patents
Portable decoder as well as display method and display system thereof Download PDFInfo
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Abstract
A video decoder is connected with external equipment and comprises an interface module, a video decoding module and a video output module, wherein the interface module is used for interacting with the external equipment and receiving video files from the external equipment; the video encoding module is used for obtaining the video files from the interface module and converting the video files into video signals which can be directly broadcast by the external display equipment; and the video output module is used for receiving the video signals from the video encoding module and outputting the video signals to the external displaying equipment.
Description
Technical field
The present invention relates to a kind of portable codec device, for display packing and the display system of decoder.Particularly, the present invention relates to a kind of portable codec device of the video file for the exterior terminal equipment of decoding, for display packing and the display system of decoder.
Background technology
Current, because the portable terminal such as net book is very light and be easy to carry about with one, be therefore subject to users' favor.Owing to having taken into account the portability of portable terminal, therefore cause the computing capability relative deficiency of central processing unit and the display driver of portable terminal.Yet the broadcasting of high definition film has very high requirement to the hardware configuration of portable terminal, therefore common portable terminal allows to play high definition film, its broadcasting is also discontinuous, even occur pausing, and this has become a key factor of the sales volume of restriction portable terminal.
For above-mentioned situation, the various technical schemes that address the above problem have been proposed.Technical scheme is to promote the central processing unit of portable terminal and a performance for display driver, enables to reach the degree of playing high definition film.Another technical scheme is to use external video card, and the disposal ability of using external display card makes portable terminal can play glibly relevant high definition film.Also having a kind of technical scheme is a built-in hardware decoder in portable terminal, then by the decode video file of high definition hard disk of hardware decoder, reduces the burden to the central processing unit of portable terminal and display driver.
Yet still there is variety of issue in technique scheme.For example, promote the central processing unit of portable terminal and the performance of display driver and cause the cost of net book to uprise, and make the size of portable terminal become large, thereby affect the portability of portable terminal.In addition, the cost of external video card is higher, and thermal diffusivity is poor and be not easy to carry.Therefore, use external video card also can affect cost and the portability of portable terminal.In addition, the display driver of hardware decoder of the prior art and portable terminal (, video card) connect, and decoded vision signal is outputed to the display driver of portable terminal, then by this display driver, complete demonstration work.This configuration can not reduce the burden of central processing unit and the display driver of portable terminal effectively.
Summary of the invention
Therefore, the invention provides a kind of portable codec device, for display packing and the display system of decoder, overcome the problems referred to above of the prior art.
According to an aspect of the present invention, provide a kind of video decoder, this video decoder is connected to external equipment, and comprises: interface module, for mutual with external equipment, and receives the video file from external equipment; Video decode module, for obtaining video file from interface module, and is converted to by video file the vision signal that external display device can be play-overed; With video output module, for receiving the vision signal from video decode module, and vision signal is outputed to external display device.
In addition, according to a further aspect in the invention, provide a kind of display packing, described display packing is used for being connected to the video decoder of external equipment, and comprises: mutual with external equipment, and receive the video file from external equipment; Received video file is converted to the vision signal that external display device can be play-overed; With changed vision signal is outputed to external display device.
In addition, according to a further aspect in the invention, a kind of video display system, comprising: terminal equipment, and this terminal equipment comprises: memory, for store video files; Image driver, for carrying out image processing to produce vision signal to video file; Display, shows for the vision signal to produced; Controller, for controlling the memory of terminal equipment, image-driven equipment and display device; Decoding device with being connected with terminal equipment, comprising: interface module, for mutual with terminal equipment, and receives the video file from terminal equipment; Video decode module, for obtaining the video file from interface module, and is converted to by video file the vision signal that display device can be play-overed; With video output module, for receiving the vision signal from video decode module, and vision signal is outputed to display device.
According to above-mentioned configuration, can video file be converted to the vision signal that display device can directly use by portable codec device, thereby make portable terminal can play the video file such as high definition film.In addition, because this portable codec device is special-purpose hardware device, so it is small-sized, does not affect thus the portability of portable terminal.
Accompanying drawing explanation
Fig. 1 is that diagram is according to the block diagram of the example of the display system of first embodiment of the invention;
Fig. 2 is according to the flow chart of the decode procedure of the display system of first embodiment of the invention;
Fig. 3 is the block diagram that illustrates the structure of video decoder according to another embodiment of the invention;
Fig. 4 is the block diagram that illustrates the structure of video decoder according to another embodiment of the invention;
Fig. 5 is that diagram is according to the block diagram of the structure of the display system of a revision for execution example of the present invention;
Embodiment
Each embodiment of the present invention is described with reference to the accompanying drawings.In the accompanying drawings, identical Reference numeral represents same or similar element or part, and omits being as required repeated in this description of they.
Below, with reference to Fig. 1, briefly describe according to the display system of the first embodiment of the present invention.
Fig. 1 is that diagram is according to the block diagram of the example of the display system of first embodiment of the invention.
As shown in Figure 1, according to the display system 10 of first embodiment of the invention, comprise terminal equipment 100, portable video decoding device 200 and display device 300.
For example, according in the display system 10 of the present embodiment, terminal equipment 100 comprises memory unit 101, control assembly (as, central processing unit) 102, display driver parts 103, display unit 104 and input/output interface 105.
The memory unit 101 of terminal equipment 100 for store carry out various operations with realize the routine data (as, operating system) of the various functions of terminal equipment 100 and user data (as, text, video file and audio file).The frequency operation of control assembly 102 to be scheduled to, and according to the routine data being stored in memory unit 101, all parts in terminal equipment 100 is controlled, to carry out corresponding operation.Display driver parts 103 for to view data (as, picture and video file) carry out image processing, to produce picture signal, and by produced image signal output to display unit 104.The picture signal that display unit 104 provides according to display driver parts 103 shows.Input/output interface 105 is for the external device (ED) with terminal equipment 100 (as, video decoder 200) communication, and sends or receive data from external device (ED) to external device (ED).
Portable video decoding device 200 in display system 10 comprises interface module 201, memory module 202, video decode module 203 and video output module 204.
In video decoder 200, interface module 201 is docked with terminal equipment 100, and receives the video file from terminal equipment 100.Memory module 202 is stored the video file being received from terminal equipment 100 by interface module 210 therein.Video decode module 203 obtains video file from memory module 202, and the translative mode based on predetermined is converted to by video file the vision signal that display device 300 can be play-overed, and produced vision signal is sent to video output module 204.The vision signal that video output module 204 receives from video decode module 203, and this vision signal is outputed to display device 300.
Display device 300 in display system 10 (as, TV) comprises video input/output interface 301 and display floater 302.The vision signal that this video input/output interface 301 receives from video decoder 200.Vision signal based on received, display floater 302 shows the image corresponding with vision signal.
Below, will describe in detail according to the display operation of the display system 10 of first embodiment of the invention.
Fig. 2 is according to the flow chart of the procedure for displaying of the display system 10 of first embodiment of the invention.
As shown in Figure 2, first, user is inserted into video decoder 200 on terminal equipment 100.Interface standard between terminal equipment 100 video decoders 200 can comprise the general-purpose interface such as USB, HDMI and PCI-E.Yet, can use other interface that can realize the mutual and exchanges data between video decoder 200 and terminal equipment 100.In the present embodiment, by USB interface, as example, be described.
After user is inserted on terminal equipment 100 by video decoder 200, terminal equipment 100 is identified it.Particularly, at step S101, at terminal equipment 100, by input/output interface 105 (as, USB interface), detect after video decoder 200 (as USB peripheral hardware) inserts, video decoder 200 is resetted.
After the reset of video decoder, at step S102, terminal equipment 100 sends the request of acquisition device descriptor.Then, at step S103, the interface module 201 of video decoder 200 returns to terminal equipment 100 by unit describe symbol.
Afterwards, at step S104, terminal equipment 100 is distributed to video decoder 200 by a unique address, thereby makes this video decoder 200 carry out subsequent communications with this unique address and terminal equipment 100.
Then the video file that user plays hope copies to video decoder 200.At step S105, the video file that the interface module 201 of video decoder 200 receives from terminal equipment 100, and be stored in memory module 202.
Then, at step S106, video decode module 203 reads video file from memory module 202, and at step S107, according to default decoding process, file is decoded, the vision signal that generation can be play-overed by display device 300 simultaneously (as, the vision signal based on VGA, DVI, HDMI etc.), and produced vision signal is sent to video output module 204.
Then, at step S108, video output module 204 judges whether to be connected with display device 300.If judging video decoder 200, video output module 204 is connected with display device 300, video output module 204 outputs to display device 300 to show the video file decoded (as, high definition film) on display device 300 by the vision signal receiving.
In the present embodiment, video decoder 200 comprises wired and wireless mode with display device 300 connected modes.If video decoder 200 is connected to display device 300 with wired mode, directly video signal is sent to display 300 by corresponding video transmission line, and if video decoder 200 is connected to display device 300 with wireless mode, video signal can be encapsulated according to corresponding wireless protocols, then produced packet be sent to display device 300.
In addition, alternatively, video decoder 200 can be used as main equipment (master) work.Particularly, for example, the control module 205 of video decoder 200 sends the request of acquisition device descriptor to terminal equipment 100 by interface module 201, and obtaining the read-write right to the memory unit 101 of terminal equipment, the video file in while detection of stored parts 101 also provides the list about detected video file to user.Then user selects to need the media file of broadcasting.Now, video decoder 200 can directly read the video file that user selects, and it carries out corresponding decode operation.
According to above-mentioned configuration, by 200 pairs of video files of video decoder, decode, and produce the vision signal that display device 300 can be play-overed.In this case, because the control assembly 102 of terminal equipment 100 and display driver parts 103 are without video file is decoded, therefore effectively reduce the burden of control assembly 102 and display driver parts 103.Utilize above-mentioned video decoder 200, even if the performance of terminal equipment 100 is lower, also can on display device 300, play glibly the video file such as high definition film.In addition,, because this video decoder 200 is the hardware that is exclusively used in video decode, therefore can effectively control its size, thereby not affect the portability of this video decoder 200.
Alternatively, for example, video decoder 200 can also be included between video decode module 203 and video output module 204 buffer that arranges (as, DDR memory), for cushioning the vision signal by 203 decodings of video decode module.
In addition, for example, in the situation that the interface module 201 in video decoder 200 and video decode module 203 have high data processing speed, or the in the situation that of displaying video files in stream media, can memory module 202 be set in video decoder 200 with further cost-saving.
In addition, for example, video decoder 200 can also allow user that the decoding function that whether starts video decoder 200 is set, wherein in the situation that do not enable the decoding function of video decoder 200, this video decoder 200 can also be used as mobile memory (as, USB flash disk).
The structure of video decoder according to another embodiment of the present invention will be described in detail below.
Fig. 3 is the block diagram that illustrates the structure of video decoder according to another embodiment of the present invention.As shown in Figure 3, according to the difference between the decoder 200 in the video decoder 200 ' of the present embodiment and above-described embodiment, be: video decoder 200 ' also comprises control module 205, writes switch 206 and read switch 207, and memory module 202 comprises two storage medium 202a and 202b.Due to identical with the corresponding component of video decoder 200 in above-described embodiment according to the 26S Proteasome Structure and Function of other parts of the video decoder 200 ' of the present embodiment, therefore in order to make specification simpler and clearer, utilize identical Reference numeral to represent these parts, and omitted being repeated in this description about these parts.
According in the video decoder 200 ' of the present embodiment, control module 205 is controlled and is write switch 206 and read switch 207, makes to control as required the storage order of two storage medium 202a and 202b and the reading order of storage medium 202a and 202b.
To in the decode procedure of video decoder 200 ', the flow process that control module 205 is controlled two storage medium 202a and the storage order of 202b and the reading order of this two 202a and 202b storage medium is elaborated below.Because current video such as high definition film has a plurality of video files conventionally, therefore, the situation that hypothesis exists a plurality of video files to play here.
When starting a plurality of video files to copy to video decoder 200 ' from terminal equipment 100, first control module 205 sends to control command and writes switch 206, thereby control and to write switch 206 video file (as, video file 1) is copied to storage medium 202a.Therebetween, control module 205 is according to the attribute information of video file and the attribute information of storage medium 202a from terminal equipment 100, judge the size of video file and storage medium 202a can memory space between relation to determine whether storage medium 202a is fully written.
In the situation that storage medium 202a is not fully written, control module 205 by write switch 206 allow by the further part of video file (as, video file 2,3... etc.) be stored in storage medium 202a to make full use of memory space.In this case, if after having copied of all video files, storage medium 202a is not fully written yet, and control module 205 instructions are read switch 207 selection storage medium 202a as reading the storage medium of video file to decode from it, and do not use storage medium 202b.
The size of video file be greater than storage medium 202a can memory space and cause storage medium 202a to be fully written; or in the situation that storage medium 202a writes a plurality of video files and causes storage medium 202a to be fully written; control module 205 storage medium 202a are set to a read states;; can not store new video file to storage medium 202a, thereby the video file that protection will be play is not by other data cover.
Then, control module 205 sends control command to writing controller 206, the further part of video file is copied in storage medium 202b by writing controller 206.
Therebetween, for example first video file (as, video file 1) be written in storage medium 202a, or after storage medium 202a is set to a read states, control module 205 sends control commands to reading switch 207, thereby allows video decode module 203 to read the video file that will play to decode from storage medium 202a.
Then, when storage medium 202b is also fully written, control module 205 detects the decoding work whether video decode module 203 has completed for the video file in storage medium 202a.
If completed the decoding work for the video file in storage medium 202a, control module can be set to a read states by storage medium 202b, storage medium 202a is set to write state simultaneously, thereby allows by writing switch 206, the further part of video file to be written in storage medium 202a.Meanwhile, control module 205 selects storage medium 202b as reading the storage medium of video file to decode from it to reading switch 207 transmission instructions, and video decode module 203 can continue to read video file from storage medium 202b by reading switch 207 thus.
If also do not complete the decoding work for the video file in storage medium 202a, control module 205 sends to writing selector 206 transmission that order suspends video file.Then, after the decoding work of the video file in storage medium 202a completes, control module 205 storage medium 202a are set to write state, and instruction writes selector 206 further part of video file is copied in storage medium 202a, to recover (transmission) work that copies of video file.
When all video files that will play all decode complete after, control module 205 is removed the video file in all storage mediums (201a, 202a), and all storage mediums are set to write state.
Pass through aforesaid operations, control module 205 is according to the read/write status of storage medium (202a, 202b) and the decoding situation of video file, in storage medium 202a and storage medium 202b, switch, thereby can realize the consecutive access of file and play continuously with limited memory space.For example, during the broadcasting of the video file in storage medium 202a, the further part of store video files in storage medium 202b, and during the broadcasting of the video file in storage medium 202b, the further part of store video files in storage medium 202a, thus the broadcasting of video file can not interrupted.
In addition, it should be noted that, although described control module 205 control store medium 202a and the storage order of 202b and the flow process of reading order thereof with said sequence, also can carry out for control store medium 202a and the storage order of 202b and the operation of reading order thereof not according to said sequence.For example, can start by first video file (as, while video file 1) copying to storage medium 202a, just start the decoding work of this video file, and needn't wait until that this video file is written in storage medium 202a, or storage medium 202a is set to the decoding work that a read states starts this video file afterwards again.
In addition, whether control module 205 completes without the decoding work that just checks storage medium 202a when storage medium 202b is fully written, once the decoding work of storage medium 202a completes, control module 205 just immediately storage medium 202a be set to write state, thereby allow the writing of further part of video file.
Below by the video decoder 200 of describing according to another embodiment of the invention " structure and operation.Fig. 4 is the video decoder 200 illustrating according to another embodiment of the invention " the block diagram of structure.As shown in Figure 4, memory module 202 comprises three storage medium 202a, 202b and 202c.
With the above-mentioned video decoder 200 that comprises two storage mediums " access control procedure similar, control module 205 judges in the ablation process of video file whether current storage medium is fully written.
Particularly, if storage medium 202a is fully written, control module 205 storage medium 202a are set to a read states, and by writing switch 206, the further part of video file are written in storage medium 202b.Then, if storage medium 202b is also fully written, control module 205 is also set to a read states by storage medium 202b, and by writing switch 206, the further part of video file is written in storage medium 202c.
Therebetween, reading in process of video file, control module 205, based on playing sequence, is selected the storage medium that will be read by video decode module by reading switch 207.
Particularly, for example, control module 205, based on playing sequence, selects storage medium 202a to be used as the reading object of video decode module 203 by reading switch 207, and judge whether storage medium 202a is in a read states (that is, whether this storage medium 202a is fully written).If this storage medium 202a is in a read states, after the decoding of all video files of this storage medium 202a completes, control module 205 this storage medium 202a are set to write state, and select storage medium 202b as reading object by reading switch 207.Similarly, control module 205 judges whether storage medium 202b and 203b are in a read states (that is, whether storage medium 202b and 203b are fully written) successively.Then, control module 205 is carried out with the processing of carrying out for storage medium 202a and is similarly processed for storage medium 202b, 203b.
In addition, if after storage medium 202c being write completely, also have the video file that needs broadcasting, whether the memory state of control module 203 detection of stored medium 202a is a read states, and whether the namely decoding work for all video datas in storage medium 202a completes.If storage medium 202a is for can write state, represent to have completed the decoding work of all video datas in storage medium 202a.Therefore, control module 203 can continue the further part of video file to copy in storage medium 202a by writing controller 206.In addition,, if storage medium 202a is a read states, control module 203 instruction writing controllers 206 suspend copying of video file, until completed the decoding work of all video datas in storage medium 202a.In addition, similarly, if storage medium 202b and 202c also in a read states, control module 205 can also be carried out identical processing to storage medium 202b and 202c and allow to continue to write video data.
In the present embodiment, with sequential storage and order reading manner, carry out storage and the decoding work of video file, yet, alternatively, as long as control module 205 can obtain the corresponding relation of video file and memory location (which storage medium), just can video file be stored in the storage medium that can write arbitrarily by writing switch 206, and be set to a read states after this storage medium is write completely.In addition, in reading process, according to the corresponding relation between playing sequence and video file and storage medium, control module 205 can by read switch 207 select the storage medium corresponding with the video file that will decode as reading object to carry out the decoding of video file, and this storage medium is set to write state to allow the further part of further store video files after the decoding of video file completes.
In addition, in the above-described embodiments, control module 205 by arrange storage medium read-only/state of can writing forbids/allows writing storage medium.Alternatively, control module 205 can be relevant with each storage medium by setting up, represent that information that whether this storage medium can write is by writing switch 206 controls writing each storage medium.For example, if this information is " 1 ", represent that the storage medium corresponding with this information is not fully written, and, can write video file to this storage medium that is.On the contrary, this information is " 0 ", represents that the storage medium corresponding with this information is fully written,, cannot continue to write video file to this storage medium that is.Similarly, control module 205 can also be crossed and read the read operation that switch 207 is controlled each storage medium according to this information exchange.For example, complete for after the reading of particular memory medium, control module 205 can be set to corresponding to the information of this storage medium " 1 " to allow to this storage medium data writing.The information whether format management that in addition, control module 205 can also list can be write about each storage medium.
In the above-described embodiments, describe the example that memory module 202 has two storage mediums and three storage mediums, alternatively, according to the video decoder of the embodiment of the present invention, can also comprise more storage medium so that larger memory capacity to be provided.
The following describes according to the structure of the display system 10 ' of a revision for execution example of the present invention.
Fig. 5 is that diagram is according to the block diagram of the structure of the display system 10 ' of a revision for execution example of the present invention.Display system 10 ' shown in Fig. 5 and being according to the difference between the display system 10 of first embodiment of the invention: the terminal equipment 100 ' in display system 10 ' also comprises external video input interface 106, vision signal memory unit 107 and MUX 108.In addition, alternatively, video decoder 200 can also return to terminal equipment 100 ' by vision signal.Because other parts of the display system 10 ' in the present embodiment are with identical according to the corresponding component of the display system 10 of first embodiment of the invention, therefore with identical Reference numeral, represent these parts, and omit being repeated in this description of they.
Describe the structure of the terminal equipment 100 ' shown in Fig. 5 below in detail.As shown in Figure 5, in terminal equipment 100 ', control assembly 102, display driver parts 103 are connected to MUX 108, and external video input interface 106 is connected to MUX 108 by vision signal memory unit 107.MUX 108 selects data from one of control assembly 102, display driver parts 103 and vision signal memory unit 107 as output, and selected data are outputed to display unit 104.
Be described in detail in video decoder 200 below and decoded vision signal returned to the processing of terminal equipment 100 '.
In the present embodiment, video decoder 200 can be connected with the external video input interface 106 of terminal equipment 100 ' by video output module 204, and decoded vision signal is returned to external video input interface 106.The vision signal that external video input interface 106 receives from video decoder 200, and be stored in vision signal memory unit 107.Alternatively, if the processing speed of external video input interface 106 and MUX 108 is enough fast, terminal equipment 100 ' can not comprise vision signal memory unit 107, and external video input interface 106 directly outputs to MUX 108 by received vision signal.
When MUX 108 receives vision signal or other data, the received data of MUX 108 judgement are local datas or from outside vision signal.If received data be from outside (as, video decoder 200) vision signal, MUX 108 select received, from outside vision signal as output, to output to the content of playing video file on display unit 104.Because the vision signal from video decoder 200 is the vision signal that can play-over, therefore do not need to pass through again control assembly 102 (as, CPU) and the processing of display driver 103 (as, video card), and can play-over.Alleviated like this, to a great extent the burden to terminal equipment 100 '.Therefore,, even if the hardware configuration of terminal equipment 100 ' is lower, also can on this terminal equipment 100 ', play glibly the video file such as high definition film.
As mentioned above, describe particularly each embodiment of the present invention in the above, but the invention is not restricted to this.It should be appreciated by those skilled in the art, can carry out various modifications, combination, sub-portfolio or replacement according to designing requirement or other factors, and they are in the scope of claims and equivalent thereof.
Claims (9)
1. a video decoder, described video decoder is connected to external equipment, and comprises:
Interface module, for mutual with described external equipment, and receives the video file from described external equipment;
Video decode module, for obtaining video file from described interface module, and is converted to by described video file the vision signal that external display device can be play-overed; With
Video output module, for receiving the described vision signal from described video decode module, and outputs to described external display device by described vision signal, and wherein said external display device is TV;
Memory module, for storing the described video file being received from described external equipment by interface module, described memory module comprises:
At least two storage mediums;
Write switch, for selecting for writing the storage medium of described video file from described at least two storage mediums;
Read switch, for selecting storage medium to read described video file from described at least two storage mediums; And
Control module, the storage order of at least two storage mediums and the reading order of described at least two storage mediums described in being used for controlling, wherein during the decoding of described video file, described in described control module detects at least two storage mediums, writing the state of the storage medium of described video file, if writing the storage medium of described video file is fully written, the described storage medium of described control module is set to a read states, and by said write switch, described in the further part of described video file is stored at least two storage mediums, be not set in another storage medium of a read states.
2. video decoder according to claim 1, is characterized in that:
Described control module is based on playing sequence, by read switch select described in storage mediums at least two storage mediums, that will be read by video decode module,
If wherein the current storage medium reading is set to a read states,, after having read, the described storage medium that is set to a read states of described control module is set to write state.
3. according to the video decoder described in any one in claim 1 to 2, it is characterized in that:
When being connected with described external equipment, described control module is by the video file of storing in external equipment described in described interface module active detecting.
4. according to the video decoder described in any one in claim 1 to 2, it is characterized in that:
Described video decoder is further included in the buffer arranging between described video decode module and described video output module, for cushioning the described vision signal by described video decode module decoding.
5. a display packing, described display packing is applied to be connected in the video decoder of external equipment, and described video decoder comprises at least two storage mediums, and described display packing comprises:
Mutual with described external equipment, and receive the video file from described external equipment;
Received described video file is converted to the vision signal that external display device can be play-overed;
Changed described vision signal is outputed to external display device, and wherein said external display device is TV; And
The storage order of at least two storage mediums and the reading order of described at least two storage mediums described in control, wherein in the storage order of at least two storage mediums described in controlling, during the decoding of described video file, described in detection at least two storage mediums, writing the state of the storage medium of described video file, if writing the storage medium of described video file is fully written, described storage medium is set to a read states, and described in the further part of described video file is stored at least two storage mediums, be not set in another storage medium of a read states.
6. display packing according to claim 5, is characterized in that:
Based on playing sequence, storage mediums at least two storage mediums, that will therefrom read described video file described in selection,
If wherein the current storage medium reading is set to a read states,, after having read, the described storage medium that is set to a read states is set to write state.
7. according to the display packing described in any one in claim 5 to 6, it is characterized in that:
When being connected with described external equipment, the video file of storing in external equipment described in active detecting.
8. a video display system, comprising:
Terminal equipment, described terminal equipment comprises:
Memory, for store video files;
Image driver, for carrying out image processing to produce vision signal to video file;
Controller, for controlling the described memory of terminal equipment and image-driven equipment;
Display device, for showing the vision signal receiving; And
The decoding device being connected with terminal equipment, comprising:
Interface module, for mutual with described terminal equipment, and receives the video file from described terminal equipment;
Video decode module, for obtaining the video file from described interface module, and is converted to by described video file the vision signal that described display device can be play-overed; With
Video output module, for receiving the described vision signal from described video decode module, and outputs to described display device by described vision signal,
Memory module, for storing the described video file being received from described terminal equipment by interface module, described memory module comprises:
At least two storage mediums;
Write switch, for selecting for writing the storage medium of described video file from described at least two storage mediums;
Read switch, for selecting storage medium to read described video file from described at least two storage mediums; And
Control module, the storage order of at least two storage mediums and the reading order of described at least two storage mediums described in being used for controlling, wherein during the decoding of described video file, described in described control module detects at least two storage mediums, writing the state of the storage medium of described video file, if writing the storage medium of described video file is fully written, the described storage medium of described control module is set to a read states, and by said write switch, described in the further part of described video file is stored at least two storage mediums, be not set in another storage medium of a read states.
9. video display system according to claim 8, is characterized in that:
Described display device is connected with the display driver of described terminal equipment, and
Described terminal equipment further comprises:
External video input interface, for receiving the described vision signal from described decoding device; With
MUX, described MUX is connected to described external video input interface, described display driver and described controller, and for selecting vision signal from one of described external video input interface, described display driver and described controller as output, to output to described display device
Wherein MUX judges whether its vision signal receiving is the vision signal from described decoding device, if received described vision signal is the vision signal from described decoding device, described MUX receives vision signal from external video input interface to output to described display device.
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| CN102419447A (en) * | 2011-08-26 | 2012-04-18 | 深圳市索菱实业股份有限公司 | Multifunctional automobile navigator |
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