CN101098476A - Method of optimizing video information output of data reading in magnetic disk array - Google Patents
Method of optimizing video information output of data reading in magnetic disk array Download PDFInfo
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- CN101098476A CN101098476A CN 200710118696 CN200710118696A CN101098476A CN 101098476 A CN101098476 A CN 101098476A CN 200710118696 CN200710118696 CN 200710118696 CN 200710118696 A CN200710118696 A CN 200710118696A CN 101098476 A CN101098476 A CN 101098476A
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Abstract
The invention disclose an optimize method for reading and outputting the data of disc array as video, which comprises that a plurality of disc arrays output data information to a decoder, to be decoded to output source data to a data checker, the data checker processes video percentage threshold value judgment on the received source data, and outputs the source data not lower than the threshold value to a video unit to display image and voice information, and not display the source data lower than the threshold value at video, and the processor of the disc array reuses the decoder to read data. The inventive optimize method utilizes the frame format of output video information, and the continuous display permission on the output data of disc array at some allowance.
Description
Technical field
The present invention relates to a kind of method that data message is carried out video information output demonstration, more particularly say, be meant a kind of optimization method that is applicable to that data read is carried out video information output in the disk array.
Background technology
Disk array generally adopts Intel or Power PC class CPU to carry out computing, add that interface chips such as FC, SAS, SCSI, SATA finish the connection of hard disk, main frame adopts SCSI, FC, ISCSI interface to satisfy the high speed data transfer requirement, so hardware cost is just very high; And because the now embedded systems that adopt of field of video monitoring, external interface is generally IDE or SATA interface, also has no idea to realize on being connected with SCSI, FC, ISCSI more.Disk array generally is applied in the high place of data security degree, so when transfer of data data have been carried out strict verification, finds wrong back until till the verification correctly.But, in field of video monitoring, because video output data information includes image and audio data, allow to exist certain redundancy, present disc array system is not done too many design in this respect and is solved, and more than is exactly the main cause why disc array system is not used widely in field of video monitoring.
Referring to shown in Figure 2, existing disk array carries out the flow process that video shows to the data message of output, at first a plurality of disk array dateout information are given decoder, the output source data are given the data check unit behind decoder decode, after the data check unit carries out the verification of correctness to the source data that receives, correct data will be used for video and show, and incorrect or incomplete correct data will not carried out the video demonstration.When no correct data, disk array will be shown as " free of data " and show or " data read ".Data are not stopped repeats to read, and has reduced the useful life of disk array.
Summary of the invention
The objective of the invention is to propose a kind of optimization method that data read in the disk array is carried out video information output, adopt the mode of setting certain redundancy to carry out threshold decision from the data message of data check output, video unit carries out image and audio data shows to exporting to more than or equal to the data volume of threshold value then, the data volume less than threshold value is come back to repeat in the decoder to read.Solve existing disk array and necessarily required to export the defective that shows under the correct condition of data, enlarged the application of disk array in field of video monitoring.
The present invention is a kind of optimization method that data read in the disk array is carried out video information output, a plurality of disk array dateout information are given decoder, the output source data are given the data check unit after decoder decode is handled, the data check unit carries out the video percentage threshold to the source data that receives and judges, video unit carries out image and audio data shows to exporting to more than or equal to the source data amount of threshold value, do not show then do not carry out video less than the source data amount of threshold value, and the processor of disk array will carry out the repeating step of decoder reading of data again.
The optimization method that the present invention carries out video information output to data read in the disk array has following advantage: (1) does not change the data storage method of existing disk array, has improved its versatility; (2) adopt the percentage mode of data message amount to carry out the data volume judgement, the video output continuity is good; (3) the guest room end is easy to operate, only needs to set in processor the ratio 60～80% of correlated judgment data volume, as definite value 60%, 65%, 70%, 80% etc.
Description of drawings
Fig. 1 is the present invention carries out the optimization of video information output to data read in the disk array a FB(flow block).
Fig. 2 is the FB(flow block) that data read is carried out video information output in the existing disk array.
Embodiment
The present invention is described in further detail below in conjunction with drawings and Examples.
The present invention is a kind of optimization method that data read in the disk array is carried out video information output, be to have utilized video information to be output as frame format and allowed to export to have under the condition of certain redundancy the optimization method that the data that disk array is exported show continuously.The data of exporting, the continuity video that carries out demonstration are judged, finished to optimization method of the present invention by carry out the video percentage threshold in the data of data check unit output from disk array.
The hardware of general disk array includes a plurality of disks, a processor at least, and disk array involved in the present invention not only comprises conventional hardware, but also be provided with video output threshold value by software mode in processor the unit is set.Setting video percentage threshold has solved the defective that the disk array dateout must can both be carried out the video demonstration fully in the unit by being provided with in video output threshold value.
In the present invention, the video percentage threshold of setting in the unit is set can be that 60～80% source data can be carried out video and shown continuously to video output threshold value; Also can be a definite value between 60～80% source datas, the source data as 60%, 65% source data, 70% source data, 80% source data etc. be provided with the requirement of video quality according to the user.
Referring to shown in Figure 1, a plurality of disk array dateout information are given decoder, the output source data are given the data check unit after decoder decode is handled, the data check unit carries out the video percentage threshold to the source data that receives and judges, video unit carries out image and audio data shows to exporting to more than or equal to the source data amount of threshold value, do not show then do not carry out video less than the source data amount of threshold value, and the processor of disk array will carry out the repeating step of decoder reading of data again.
The optimization that video data of the present invention is read is write program, characteristics according to video data, under the situation that guarantees video playback, the correctness of data has been set redundancy solved the screens that data are read, just the standstill state of video image guarantees the continuity of playing, realize by software parameter, can certainly guarantee that data are first, just the same with the disk array read-write mode, whole like this dish battle array just can be applied in other field.
This overall plan is exactly to adopt the technology of disk array, at the concrete achievement of using of video monitoring industry, make disk array technology can well be applied in field of video monitoring, and in order to improve practicality, the hot plug of hard disk is provided, can change faulty disk in non-stop-machine situation, guarantee the reliability of data, and design such as temperature alarming, fan are reported to the police, gui management or the like is used in disk array option; The stability of assurance system.
Embodiment 1
Video shows that the source data amount is the continuity video output of carrying out more than 80%
Disk array hardware: adopt single asic chip, finish the RAID function by the algorithm that solidifies RAID5 with interface chip and be connected, support RAID, 1,10,5,5+Spare, internal 4 SATAII hard disks, external 1 E-sata interface with interface.
Adopt video percentage threshold optimization method of the present invention to having carried out the source data of threshold setting 80% in the processor, from opening disk array, demonstrated video data after 5 seconds, continuity is better, clear picture.
To not adopting optimization method of the present invention, from opening disk array, no video data output did not still have the output of video data through 15 seconds after 5 seconds.After there is seldom partial data loss in verification in the source data of decoder output, the data that read in the data check unit are incorrect data, so can not normally carry out video output.
Claims (3)
1, data read is carried out the optimization method of video information output in a kind of disk array, it is characterized in that: a plurality of disk array dateout information are given decoder, the output source data are given the data check unit after decoder decode is handled, the data check unit carries out the video percentage threshold to the source data that receives and judges, video unit carries out image and audio data shows to exporting to more than or equal to the source data amount of threshold value, do not show then do not carry out video less than the source data amount of threshold value, and the processor of disk array will carry out the repeating step of decoder reading of data again.
2, the optimization method of video information output according to claim 1, it is characterized in that: the video percentage threshold is 60～80% source data.
3, the optimization method of video information output according to claim 1, it is characterized in that: the video percentage threshold is a definite value between 60～80% source data.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN 200710118696 CN101098476A (en) | 2007-07-12 | 2007-07-12 | Method of optimizing video information output of data reading in magnetic disk array |
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| CN 200710118696 CN101098476A (en) | 2007-07-12 | 2007-07-12 | Method of optimizing video information output of data reading in magnetic disk array |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101976176A (en) * | 2010-08-19 | 2011-02-16 | 北京同有飞骥科技有限公司 | Method for constructing disk array of horizontal grouping parallel distribution check |
| CN102196230A (en) * | 2010-03-18 | 2011-09-21 | 佳能株式会社 | Chapter information creation apparatus and control method therefor |
| CN101753411B (en) * | 2008-11-28 | 2012-04-18 | 英业达集团(天津)电子技术有限公司 | Method for retrieving disc information of storage area network |
-
2007
- 2007-07-12 CN CN 200710118696 patent/CN101098476A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101753411B (en) * | 2008-11-28 | 2012-04-18 | 英业达集团(天津)电子技术有限公司 | Method for retrieving disc information of storage area network |
| CN102196230A (en) * | 2010-03-18 | 2011-09-21 | 佳能株式会社 | Chapter information creation apparatus and control method therefor |
| CN102196230B (en) * | 2010-03-18 | 2013-07-31 | 佳能株式会社 | Chapter information creation apparatus and control method therefor |
| CN101976176A (en) * | 2010-08-19 | 2011-02-16 | 北京同有飞骥科技有限公司 | Method for constructing disk array of horizontal grouping parallel distribution check |
| CN101976176B (en) * | 2010-08-19 | 2011-12-14 | 北京同有飞骥科技股份有限公司 | Method for constructing disk array of horizontal grouping parallel distribution check |
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