CN101557274A - Streaming medium data processing method, storage equipment and digital equipment - Google Patents
Streaming medium data processing method, storage equipment and digital equipment Download PDFInfo
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- CN101557274A CN101557274A CNA2008101034743A CN200810103474A CN101557274A CN 101557274 A CN101557274 A CN 101557274A CN A2008101034743 A CNA2008101034743 A CN A2008101034743A CN 200810103474 A CN200810103474 A CN 200810103474A CN 101557274 A CN101557274 A CN 101557274A
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Abstract
The invention provides a streaming medium data processing method, storage equipment and digital equipment, wherein the streaming medium data processing method comprises the steps: at least two streaming medium data packets are received,; the streaming medium data packets are stored in a cache,; the position information of each streaming medium data packet is obtained; the streaming medium data packets are spliced into a second streaming medium data module according to the position information of each streaming medium data packet; and the second streaming medium data module is invoked from the cache and played, wherein the streaming medium data packets belong to a first streaming medium data module, each streaming medium data packet has unique position information, and the volume of the cache is at least larger than that of the largest streaming medium data packet in the streaming medium data packets. The scheme of the invention ensures that a streaming medium file is normally played when streaming medium data is transmitted on the basis of an SATA interface or an eSATA interface.
Description
Technical field
The present invention relates to a kind of transmission of flow media data technology, be meant streaming medium data processing method and memory device and digital device especially based on SATA interface or eSATA interface.
Background technology
Off-line coordination technique among the IGRS (information equipment resource-sharing cooperation with service standard) requires offline storage equipment (as portable hard drive etc.) can support the stream medium data of digital devices such as Digital Television is pushed, and the operation of personalized files in stream media.At present, consider the transmission speed etc. of compatibility, market popularization value and the data of offline storage equipment and digital device, off-line coordination technique acquiescence adopts the eSATA interface to realize the transfer of data of digital devices such as offline storage equipment and Digital Television, the eSATA interface is the extension of SATA (serial advanced technology attachment) interface, be usually used in offline storage equipment such as hard disk, the eSATA interface can provide transmission rate faster.
In the prior art, when utilizing eSATA interface transport stream media file, all be with on files in stream media is intactly from the disk copy to the digital device, and then play.But files in stream media is bigger usually, not every digital device all possesses so big memory capacity, for example Digital Television does not just possess the memory space of a high definition film of complete storage, and all files copy also needs the long time, if document copying is imperfect, film just can not be play, and destroys user's experience.
And in the above-mentioned process of utilizing eSATA interface transport stream media file, flow media data packet is that order sends to digital device, at eSATA interface based on SATAII (SATA2.5 after the standard), because SATA II possesses NCQ (Native Command Queuing) native command queue technology, may interiorly among a small circle optimize the read-write order of disk, thus the entanglement of packet arrival order in causing among a small circle.In addition, if pile up the flow media data packet transmission of (promptly transmitting a files in stream media simultaneously) under the form, there is the uncertainty of interior among a small circle data arrival order too by a plurality of eSATA interfaces.For files in stream media, need in chronological sequence order to transmit and plays, so the incorrect in proper order files in stream media that causes of flow media data packet arrival can not normal play, therefore, the data packet arrival sequencing problem is a problem demanding prompt solution.
Summary of the invention
Embodiments of the invention provide a kind of streaming medium data processing method and memory device and digital device, based on SATA interface or eSATA interface transport stream media data the time, have guaranteed the splicing order of flow media data packet and the normal play of files in stream media.
For solving the problems of the technologies described above, a kind of streaming medium data processing method is provided, comprising:
Receive at least two flow media data packet, described at least two flow media data packet belong to first-class media data module, and each described at least two flow media data packet has unique positional information;
At least one described at least two flow media data packet is deposited in the buffer memory, and the size of described buffer memory is at least greater than the size of flow media data packet maximum in described at least two flow media data packet;
Obtain the positional information of each described at least one described at least two flow media data packet;
According to the positional information of described each described at least one described at least two flow media data packet, it is the second stream medium data module that described at least one described at least two flow media data packet are spliced to form;
From described buffer memory, call the described second stream medium data module and play.
Preferably, the step of at least two flow media data packet of described reception is specially: receive at least two flow media data packet by SATA interface or eSATA interface.
Preferably, described positional information is: the length information of flow media data packet or bag serial number information;
According to the positional information of described each described at least one described at least two flow media data packet, it is that the step of the second stream medium data module is specially that described at least one described at least two flow media data packet are spliced to form:
According to the length information of described each described at least one described at least two flow media data packet or bag serial number information, search described stream medium data and wrap in position in the described stream medium data module;
Described flow media data packet is spliced to relevant position in the described stream medium data module;
According to the order that arrives first elder generation's splicing described at least two flow media data packet being spliced to form is the second stream medium data module.
Preferably, will described at least two flow media data packet being spliced to form according to the order that arrives first splicing earlier is that the step of the second stream medium data module also comprises step afterwards:
The described second stream medium data module is counted.
For solving the problems of the technologies described above, a kind of memory device also is provided, comprising:
Shell,
Interface is arranged on the described shell;
Memory cell is used for the stored stream media data;
Division unit, be used for described stream medium data is divided at least two stream medium data modules, each described at least two stream medium data module comprises at least two flow media data packet, and each described at least two flow media data packet has unique positional information;
Transmitting element is used for by described interface described at least two flow media data packet being sent.
Preferably, described interface is SATA interface or eSATA interface.
Preferably, described flow media data packet comprises: opening flag position information, stream medium data wrap in positional information, bag content and the bag tail information in the described stream medium data module.
Preferably, described positional information is specially: the bag serial number information of the length information of flow media data packet or flow media data packet.
Preferably, above-mentioned memory device also comprises: counting unit, described at least two the stream medium data modules of at least one that is used for described transmitting element is sent are counted.
For solving the problems of the technologies described above, a kind of digital device also is provided, comprising:
Device housings,
Interface is arranged on the described device housings;
Receiving element, place described device housings, be used for receiving at least two flow media data packet by described interface, described at least two flow media data packet belong to first-class media data module, and each described at least two flow media data packet has unique positional information;
Buffer unit is used to store at least one described at least two flow media data packet, and the size of described buffer unit is at least greater than the size of flow media data packet maximum in described at least two flow media data packet;
Acquiring unit is used for obtaining the positional information that each described at least one described at least two stream medium data wraps in described stream medium data module;
Concatenation unit, be used for the positional information according to described each described at least one described at least two flow media data packet, according to the order that arrives first elder generation's splicing described at least one described at least two flow media data packet being spliced to form is the second stream medium data module;
Broadcast unit is used for the described second stream medium data module is play.
Preferably, described interface is SATA interface or eSATA interface.
Preferably, described positional information is: the length information of flow media data packet or bag serial number information;
Described concatenation unit is according to the length information or the bag serial number information of described each described at least one described at least two flow media data packet, search described stream medium data and wrap in position in the described stream medium data module, and described flow media data packet is spliced to relevant position in the described stream medium data module, be the second stream medium data module according to arriving first earlier that the order of splicing is spliced to form described at least two flow media data packet.
Preferably, above-mentioned digital device also comprises: counting unit is used for the described second stream medium data module that described concatenation unit is spliced to form is counted.
Technique scheme belongs at least two flow media data packet of a stream medium data module by reception, when flow media data packet arrives the receiving terminal digital device, if the order that flow media data packet arrives is entanglement, digital device can correctly be spliced into a complete stream medium data module with a plurality of flow media data packet again according to the positional information of flow media data packet, then spliced stream medium data module is play, guarantee the splicing order of flow media data packet, and then guaranteed the normal play of files in stream media.
Description of drawings
Fig. 1 is an embodiments of the invention streaming medium data processing method schematic flow sheet;
Fig. 2 is the flow media data packet structural representation;
Fig. 3 is a stream medium data modular structure schematic diagram;
Fig. 4 constantly is spliced into the process schematic diagram of a stream medium data module for a plurality of flow media data packet;
Fig. 5 is the structural representation of embodiments of the invention memory device;
Fig. 6 is the structural representation of embodiments of the invention digital device.
Embodiment
For technical problem, technical scheme and advantage that embodiments of the invention will be solved is clearer, be described in detail below in conjunction with the accompanying drawings and the specific embodiments.
Embodiments of the invention are in the prior art, when utilizing SATA interface or eSATA interface transport stream media file, the entanglement of flow media data packet arrival order, problem that can not the normal play files in stream media provides a kind of streaming medium data processing method and memory device and digital device.
In the embodiments of the invention, system based on SATA interface or eSATA interface transport stream media file can comprise: have the offline storage equipment (as portable hard drive etc.) of SATA interface or eSATA interface and have the digital device (as digital TV etc.) of SATA interface or eSATA interface, the offline storage equipment that the IGRS regulation has SATA interface or an eSATA interface can be supported the streaming media data transmission to digital device.How between offline storage equipment and digital device, to transmit below in conjunction with specific embodiment explanation Streaming Media.
As shown in Figure 1, be the schematic flow sheet of embodiments of the invention streaming medium data processing method:
At first, memory device and digital device connect, and consult transmission policy.
Wherein, transmission policy comprises: tell memory device with the buffer memory capacity size of digital device, both stipulate the stream medium data block size according to the buffer memory capacity size, flow media data packet length is stipulated, to can comprising in each stream medium data module that what flow media data packet stipulate, and exchange protocol information that both all support etc.After transmission policy is consulted to finish, begin to carry out transfer of data:
Said method is by memory device and digital device both sides' negotiation, files in stream media is divided into a plurality of first-class media data modules, each stream medium data module comprises a plurality of flow media data packet, and the size of stream medium data module is stipulated according to the cache size of receiving terminal digital device, when flow media data packet arrives the receiving terminal digital device, if the order that flow media data packet arrives is entanglement, digital device can correctly be spliced into second a complete stream medium data module with a plurality of flow media data packet again according to the positional information of flow media data packet, then the spliced second stream medium data module is play, guarantee the splicing order of flow media data packet, and then guaranteed the normal play of files in stream media.
As shown in Figure 2, structural representation for flow media data packet, in the above-mentioned steps 13, to obtaining after the flow media data packet parsing that receives: the opening flag position of flow media data packet, positional information part, bag content part and bag portion, wherein, the protocol type of this transmission of flow media data of opening flag bit representation, positional information represents that this stream medium data wraps in the particular location in the stream medium data module, the multimedia data information of bag content representation reality, bag tail are represented the end mark position of this flow media data packet and packet check information etc.;
When the specific design flow media data packet, above-mentioned positional information can be the length information and/or the bag serial number information of flow media data packet;
Above-mentioned steps 14 is specially: digital device is according to the length information and/or the bag serial number information of flow media data packet, search stream medium data and wrap in position in the stream medium data module, and flow media data packet is spliced in the relevant position in the stream medium data module, be the second stream medium data module according to arriving first earlier that the order of splicing is spliced to form a plurality of flow media data packet then.
As shown in Figure 3, it is the structural representation of a stream medium data module, this stream medium data module comprises 10 flow media data packet, the length of each flow media data packet is all inequality, therefore, digital device can be determined the memory location of this flow media data packet according to the length information that receives flow media data packet, if under the individual cases, the length of two flow media data packet is identical, then carries out according to the principle that arrives first the splicing of packet elder generation; Also can compile a bag sequence number and determine that this stream medium data wraps in the memory location in the stream medium data module for each flow media data packet, whether so no matter the identical packet of length arranged, all can determine that this stream medium data wraps in the position in the stream medium data module with the bag sequence number is unique.
As shown in Figure 4, for a plurality of flow media data packet constantly arrive digital device, the process that digital device splices a plurality of flow media data packet that receive.
Said method can also comprise step: the second stream medium data module of having spliced broadcast is counted; Be mainly used in the function of supporting breakpoint transmission, if stream medium data in the process of transmission, interrupts because of fortuitous event causes transmission, when playing again, memory device and digital device exchange the number of each self-recording stream medium data module, get the smaller and restart the transport stream media data packet; For the synchronism of guaranteeing that digital device is play, can confirm once that after receiving the stream medium data module of some memory device and digital device are compared the number of each self-recording stream medium data module, get the smaller and play again.
In addition, the module serial number information that can also partly add this flow media data packet place in the positional information of flow media data packet, under the individual cases, if the stream medium data packet loss is arranged, digital device can require memory device to retransmit, repeat requests must be in time, request only need inform that the bag sequence number of the length of the module sequence number of flow media data packet of memory device disappearance or flow media data packet or flow media data packet can realize the correct splicing of flow media data packet, in fact, also the module serial number information can be do not comprised in the flow media data packet, the transfer bandwidth utilance can be improved like this.
As shown in Figure 5, embodiments of the invention also provide a kind of memory device, comprising:
Shell 51,
Interface 52 is arranged on the shell 51;
Memory cell 53 is used for the stored stream media data;
Division unit 54 is used for stream medium data is divided into a plurality of stream medium data modules, and each stream medium data module comprises a plurality of flow media data packet, and each flow media data packet has unique positional information;
Transmitting element 55 is used for sending by a plurality of flow media data packet of interface with at least two stream medium data modules;
Counting unit 56, the stream medium data module that is used for transmitting element 55 is sent is counted.
Wherein, above-mentioned interface 52 can be SATA interface or eSATA interface;
The structure of above-mentioned flow media data packet comprises as shown in Figure 3: opening flag position information, stream medium data wrap in positional information, bag content and the bag tail information in the stream medium data module.
The positional information that above-mentioned stream medium data wraps in the stream medium data module is specially: the bag sequence number of the length information of flow media data packet or flow media data packet.The stream medium data pack arrangement in the present embodiment and the size of stream medium data module are according to relevant host-host protocol (as the SATA consensus standard) agreement when memory device connects with digital device.
As shown in Figure 6, embodiments of the invention also provide a kind of digital device, comprising:
Receiving element 63 places described device housings, is used for receiving a plurality of flow media data packet by interface 62, and these flow media data packet belong to first-class media data module, and each flow media data packet has unique positional information;
Acquiring unit 65 is used for the flow media data packet that receives is resolved, and obtains the positional information of flow media data packet;
Wherein, above-mentioned interface 62 can be SATA interface or eSATA interface;
The flow media data packet that 65 pairs of above-mentioned acquiring units receive obtains after resolving: the opening flag position of flow media data packet, this stream medium data wrap in positional information part, bag content part and the bag portion in the stream medium data module, wherein, positional information comprises: the length information of flow media data packet and/or bag serial number information;
Above-mentioned concatenation unit 66 is according to the length information or the bag serial number information of flow media data packet, search stream medium data and wrap in position in the stream medium data module, and flow media data packet is spliced to relevant position in the stream medium data module, according to arriving first earlier that the order of splicing is spliced to form a plurality of flow media data packet is the second stream medium data module, and will splice the second stream medium data module of getting well and consign to broadcast unit 67 and play.
Because stream medium data is that unit transmits with the flow media data packet in the process of transmission, but in an embodiment of the present invention, the receiving terminal digital device is when receiving flow media data packet, do not play at once, but play again after being spliced into a stream medium data module according to a plurality of flow media data packet that certain rule will receive, in splicing, even the arrival reversed order of flow media data packet is arranged, concatenation unit 66 also can be spliced to correct position with flow media data packet according to the positional information that flow media data packet is carried, so guaranteed the normal play of stream medium data.
Above-mentioned stream medium data module is to be stored in the buffer unit 64 of digital device, therefore, the size of the memory capacity of the buffer unit 64 of digital device is at least greater than the size of the flow media data packet of the maximum in the second stream medium data module, preferably equal the size of the second stream medium data module, what a can after splicing stream medium data module, play immediately like this, promptly do not waste spatial cache, improved the efficient of playing and transmitting again.
Above-mentioned digital device also comprises a counting unit 68, be used for the good stream medium data module of concatenation unit 66 splicings is counted, be mainly used in the function of supporting breakpoint transmission, if stream medium data is in the process of transmission, interrupt because of fortuitous event causes transmission, when playing again, memory device and digital device exchange the number of each self-recording stream medium data module, get the smaller and restart the transport stream media data packet, guarantee the normal play of files in stream media.
In sum, adopt SATA interface or eSATA interface to carry out transmission of flow media data in the embodiments of the invention, guaranteed that not only stream medium data wraps in the storage order on the receiving terminal digital device, can make the files in stream media normal play, and because the link layer of SATA or eSATA possesses wrong retransmission mechanism, transmission reliability for each packet, the link layer from SATA or eSATA solves, so can think that the arrival of individual data bag is reliable fully, the eSATA interface also has the high characteristics of transmission rate, therefore utilize SATA interface or eSATA interface transport stream media file, transmission speed is fast, stable and reliable, raising user's experience;
Again because SATA interface or eSATA interface have 2 pairs of differential serial data circuits, wherein, the a pair of transmitting uplink data that is used for, another is to being used for downlink data transmission, what utilize is point-to-point transmission technology, can easily realize the two-way communication relevant with medium, therefore, the user can be written to some users' personal management information in the multimedia file in the memory device (hard disk) and go, think that as the user certain part of film oneself enjoys a lot, the user can collect certain broadcast point (as the serial number information of certain data module) of this film, perhaps collect some fragment of film, perhaps film is carried out personalized montage, perhaps the characteristic that presents of film is made amendment and (for example revised brightness, contrast, colour temperature etc.) or the like, the broadcast point that these are collected, information such as fragment will be written in the memory device, next time is these fragments or the montage of transmission user collection directly, and need not transmit whole files in stream media, these operations all will improve the experience of user when enjoying audio-visual multimedia greatly.
Again because SATA interface or eSATA interface are standard interfaces commonly used at present, be convenient to promote, and SATA interface or eSATA mouth can also easily be realized cascade and pile up, make up jumbo multimedia platform, under the situation for cascade, play when can support a plurality of multimedia data flow, easily realize functions such as picture-in-picture, for example, after a portable hard drive and a Digital Television connect, this Digital Television some Digital Television of connecting again, these Digital Television are play the multimedia file in the portable hard drive simultaneously.
Under the situation of piling up (digital device has a plurality of SATA interfaces or eSATA interface), can support single multimedia data flow to import digital device from different SATA interfaces or eSATA mouth, thereby improve bandwidth greatly, for the high definition film provides big flow support.
In addition; embodiments of the invention memory device and digital device and the method for transport stream media file between the two; can also be applied in some application that present of maintaining secrecy; protected by copyright as the film file of storing in the portable hard drive; so when portable hard drive and digital device connect; if digital device can not provide copyright protection sign indicating number or anti-fake certificate sign indicating number; and the size information of correct stream medium data module and the length information of flow media data packet, then this film can't carry out correct broadcast.
The above 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 principle of the present invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (15)
1. a streaming medium data processing method is characterized in that, comprising:
Receive at least two flow media data packet, described at least two flow media data packet belong to first-class media data module, and each described at least two flow media data packet has unique positional information;
At least one described at least two flow media data packet is deposited in the buffer memory, and the size of described buffer memory is at least greater than the size of flow media data packet maximum in described at least two flow media data packet;
Obtain the positional information of each described at least one described at least two flow media data packet;
According to the positional information of described each described at least one described at least two flow media data packet, it is the second stream medium data module that described at least one described at least two flow media data packet are spliced to form;
From described buffer memory, call the described second stream medium data module and play.
2. streaming medium data processing method according to claim 1 is characterized in that, the step of at least two flow media data packet of described reception is specially:
Receive at least two flow media data packet by SATA interface or eSATA interface.
3. streaming medium data processing method according to claim 1 and 2 is characterized in that, described positional information is: the length information of flow media data packet or bag serial number information.
4. streaming medium data processing method according to claim 3, it is characterized in that, described positional information according to described each described at least one described at least two flow media data packet, it is that the step of the second stream medium data module is specially that described at least one described at least two flow media data packet are spliced to form:
According to the length information of described each described at least one described at least two flow media data packet or bag serial number information, search described stream medium data and wrap in position in the described stream medium data module;
Described flow media data packet is spliced to relevant position in the described stream medium data module;
According to the order that arrives first elder generation's splicing described at least two flow media data packet being spliced to form is the second stream medium data module.
5. streaming medium data processing method according to claim 4 is characterized in that, will described at least two flow media data packet being spliced to form according to the order that arrives first splicing earlier is that the step of the second stream medium data module also comprises step afterwards:
The described second stream medium data module is counted.
6. memory device comprises:
Shell,
Interface is arranged on the described shell;
Memory cell is used for the stored stream media data;
Division unit, be used for described stream medium data is divided at least two stream medium data modules, each described at least two stream medium data module comprises at least two flow media data packet, and each described at least two flow media data packet has unique positional information;
Transmitting element is used for by described interface described at least two flow media data packet being sent.
7. memory device according to claim 6 is characterized in that, described interface is SATA interface or eSATA interface.
8. memory device according to claim 6 is characterized in that, described flow media data packet comprises: opening flag position information, stream medium data wrap in positional information, bag content and the bag tail information in the described stream medium data module.
9. memory device according to claim 8 is characterized in that, described positional information is specially: the bag serial number information of the length information of flow media data packet or flow media data packet.
10. memory device according to claim 6 is characterized in that, also comprises:
Counting unit, the stream medium data module that is used for described transmitting element is sent is counted.
11. a digital device comprises:
Device housings,
Interface is arranged on the described device housings;
Receiving element, place described device housings, be used for receiving at least two flow media data packet by described interface, described at least two flow media data packet belong to first-class media data module, and each described at least two flow media data packet has unique positional information;
Buffer unit is used to store at least one described at least two flow media data packet, and the size of described buffer unit is at least greater than the size of flow media data packet maximum in described at least two flow media data packet;
Acquiring unit is used to obtain the positional information of each described at least one described at least two flow media data packet;
Concatenation unit is used for the positional information according to each described at least one described at least two flow media data packet, and according to the order that arrives first elder generation's splicing described at least one described at least two flow media data packet being spliced to form is the second stream medium data module;
Broadcast unit is used for the described second stream medium data module is play.
12. digital device according to claim 11 is characterized in that, described interface is SATA interface or eSATA interface.
13. digital device according to claim 11 is characterized in that, described positional information is: the length information of flow media data packet or bag serial number information.
14. digital device according to claim 13, it is characterized in that, described concatenation unit is according to the length information or the bag serial number information of described each described at least one described at least two flow media data packet, search described stream medium data and wrap in position in the described stream medium data module, and described flow media data packet is spliced to relevant position in the described stream medium data module, be the second stream medium data module according to arriving first earlier that the order of splicing is spliced to form described at least two flow media data packet.
15. digital device according to claim 11 is characterized in that, also comprises:
Counting unit is used for the described second stream medium data module that described concatenation unit is spliced to form is counted.
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| CNA2008101034743A CN101557274A (en) | 2008-04-07 | 2008-04-07 | Streaming medium data processing method, storage equipment and digital equipment |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105516109A (en) * | 2015-11-30 | 2016-04-20 | 长安大学 | Transmission scheduling method for ensuring video transmission service quality of wireless multi-hop network |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105516109A (en) * | 2015-11-30 | 2016-04-20 | 长安大学 | Transmission scheduling method for ensuring video transmission service quality of wireless multi-hop network |
| CN105516109B (en) * | 2015-11-30 | 2018-08-07 | 长安大学 | A kind of transmission dispatching method ensureing wireless multi-hop network transmission of video service quality |
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Application publication date: 20091014 |