CN107547815A - The method of network hard disk video recorder delay preview - Google Patents
The method of network hard disk video recorder delay preview Download PDFInfo
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- CN107547815A CN107547815A CN201710629912.9A CN201710629912A CN107547815A CN 107547815 A CN107547815 A CN 107547815A CN 201710629912 A CN201710629912 A CN 201710629912A CN 107547815 A CN107547815 A CN 107547815A
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- preview
- delay
- hard disk
- circular buffer
- video recorder
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- Television Signal Processing For Recording (AREA)
- Management Or Editing Of Information On Record Carriers (AREA)
Abstract
The method of the network hard disk video recorder delay preview of the present invention, it is characterised in that：It is that first video data is saved in internal memory, waits the effect for preview of again toward sending in decoder, accomplishing to be delayed after a while；Specifically include following steps：Network hard disk video recorder initialization flow is that it is internal memory initialization first to carry out circular buffer, then enters line delay preview control thread initialization；Network hard disk video recorder delay preview controls the thread flow to be, start to receive code stream, ask whether open time delay preview, decoding shows that video carries out live preview if it need not open, if desired open, code stream is write into circular buffer, then asks whether to meet preview conditions, circular buffer is re-write if not meeting, data are read from circular buffer if meeting, decoding is then carried out and shows video.The present invention can be good at being applied to training teaching, eliminate cumbersome operation, facilitate coach's teaching and student's self-correcting mistake.
Description
Technical field
The invention belongs to monitoring equipment field, is related to a kind of method of network hard disk video recorder delay preview.
Background technology
In modern society, monitoring device is widely used in social production, the various aspects of life, is made for security protection cause
Tremendous contribution.There is NVR than more typical monitoring device（Network Video Recorder are network hard disk video recorder）,
IPC（IP Camera are web camera）.Want that allowing student to complete diving moves in diving training centre of training centre of Administration of Sports of Shanxi Province, Shandong
After work, oneself action before tens seconds can be seen with that by swimming out of the water surface.They want to carry out using a set of monitoring device
The teaching of diving training, the action to student carry out error correction guidance.Because the NVR of current market will enter playback function every time
The video file dived just now is found to play, operation is troublesome, and their big display screen be it is endways put be difficult to it is normal
Mouse action.
The content of the invention
The present invention is in order to make up the deficiencies in the prior art, there is provided a kind of network hard disc record simple in construction, easy to use
The method of camera delay preview.
The present invention is achieved through the following technical solutions：
The method of the network hard disk video recorder delay preview of the present invention, it is characterised in that：It is that video data is first saved in internal memory
In, wait the effect of preview of again toward sending in decoder, accomplishing to be delayed after a while；Specifically include following steps：Network hard disc is recorded
Camera initialization flow is that it is internal memory initialization first to carry out circular buffer, then enters line delay preview control thread initialization；
It is to start to receive code stream that network hard disk video recorder delay preview, which controls thread flow, open time delay preview is asked whether, if being not required to
Open then decoding and show that video carries out live preview, if desired open, code stream is write into circular buffer, then inquiry is
It is no to meet preview conditions, circular buffer is re-write if not meeting, reads data from circular buffer if meeting, then
Carry out decoding and show video.
User is according to the duration of the self-defined delay of actual conditions of oneself.
The duration of self-defined delay, was set between 0-40 seconds.
The invention has the advantages that can be good at being applied to training teaching, the action to student carries out error correction guidance.
Cumbersome operation is eliminated, facilitates coach's teaching and student's self-correcting mistake.
Brief description of the drawings
Fig. 1, Fig. 2 are followed successively by the NVR initialization flowcharts of the present invention, NVR delay preview control thread flow chart schematic diagrames.
Embodiment
Accompanying drawing is a kind of specific embodiment of the invention.
The method of the network hard disk video recorder delay preview of the present invention, is that first video data is saved in internal memory, waited
A period of time again toward giving in decoder, the effect for preview of accomplishing to be delayed；Specifically include following steps：Network hard disk video recorder is initial
Changing flow is, it is internal memory initialization first to carry out circular buffer, then enters line delay preview control thread initialization；Network hard disc
It is to start to receive code stream that video recorder delay preview, which controls thread flow, open time delay preview is asked whether, if it need not open
Decoding shows that video carries out live preview, if desired opens, code stream is write into circular buffer, then asks whether to meet pre-
Look at condition, circular buffer is re-write if not meeting, read data from circular buffer if meeting, then decoded
Show video.
User is according to the duration of the self-defined delay of actual conditions of oneself.
The duration of self-defined delay, was set between 0-40 seconds.
NVR adds the function of delay preview according to demand.NVR is the code stream that live preview IPC is transmitted under regular situation
Data.This method can first be saved in video data in internal memory to wait accomplishes the preview that is delayed toward sending in decoder again after a while
Effect, thus eliminate cumbersome operation, facilitate coach teaching and student's self-correcting mistake.Shandong Province's athletic training
Center is mounted with the NVR with delay preview function that we research and develop, and perfectly solves their demand.
Because application scenarios are different, client does not have the demand of live preview, the demand for the preview that is only delayed, just have developed and prolongs
When preview function.The duration for the self-defined delay of actual conditions that coach can train according to oneself, the code stream number for the preview that is delayed
Realized according to by the way of internal memory is saved in.Because the limitation of internal memory and the demand of client only allowed client between 0-40 seconds
Set.Other clients preview can that need not be delayed is not provided with this function, can normal live preview.
Claims (3)
- A kind of 1. method of network hard disk video recorder delay preview, it is characterised in that：It is that first video data is saved in internal memory, Deng after a while again toward sending in decoder, the effect for preview of accomplishing to be delayed；Specifically include following steps：Network hard disk video recorder Initialization flow is that it is internal memory initialization first to carry out circular buffer, then enters line delay preview control thread initialization；Network It is to start to receive code stream that DVR delay preview, which controls thread flow, open time delay preview is asked whether, if need not open Qi Ze decodings show that video carries out live preview, if desired open, code stream is write into circular buffer, then asks whether to accord with Preview conditions are closed, circular buffer is re-write if not meeting, data is read from circular buffer if meeting, then carries out Decoding shows video.
- 2. the method for network hard disk video recorder delay preview according to claim 1, it is characterised in that：User is according to oneself The self-defined delay of actual conditions duration.
- 3. the method for network hard disk video recorder delay preview according to claim 2, it is characterised in that：Self-defined delay Duration, set between 0-40 seconds.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710629912.9A CN107547815A (en) | 2017-07-28 | 2017-07-28 | The method of network hard disk video recorder delay preview |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710629912.9A CN107547815A (en) | 2017-07-28 | 2017-07-28 | The method of network hard disk video recorder delay preview |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107547815A true CN107547815A (en) | 2018-01-05 |
Family
ID=60971151
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710629912.9A Pending CN107547815A (en) | 2017-07-28 | 2017-07-28 | The method of network hard disk video recorder delay preview |
Country Status (1)
| Country | Link |
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| CN (1) | CN107547815A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1282178A (en) * | 1999-07-23 | 2001-01-31 | 三星电子株式会社 | Broadcasting television receiving system with delayed watching and recording scheduled function and control method |
| CN1536506A (en) * | 2003-04-08 | 2004-10-13 | 陈绍华 | Intelligent audio-video server and recording and playback method |
| CN1825460A (en) * | 2005-02-22 | 2006-08-30 | 株式会社东芝 | Information storage medium, information recording method, and information playback method |
| US7221852B2 (en) * | 2001-05-10 | 2007-05-22 | Yamaha Corporation | Motion picture playback apparatus and motion picture playback method |
| CN101753947A (en) * | 2008-12-08 | 2010-06-23 | 北京中星微电子有限公司 | Method and device for video-on-demand playback of video monitoring recording |
| CN202496009U (en) * | 2012-04-10 | 2012-10-17 | 毛振刚 | High definition no-time-delay hard disk video recorder |
-
2017
- 2017-07-28 CN CN201710629912.9A patent/CN107547815A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1282178A (en) * | 1999-07-23 | 2001-01-31 | 三星电子株式会社 | Broadcasting television receiving system with delayed watching and recording scheduled function and control method |
| US7221852B2 (en) * | 2001-05-10 | 2007-05-22 | Yamaha Corporation | Motion picture playback apparatus and motion picture playback method |
| CN1536506A (en) * | 2003-04-08 | 2004-10-13 | 陈绍华 | Intelligent audio-video server and recording and playback method |
| CN1825460A (en) * | 2005-02-22 | 2006-08-30 | 株式会社东芝 | Information storage medium, information recording method, and information playback method |
| CN101753947A (en) * | 2008-12-08 | 2010-06-23 | 北京中星微电子有限公司 | Method and device for video-on-demand playback of video monitoring recording |
| CN202496009U (en) * | 2012-04-10 | 2012-10-17 | 毛振刚 | High definition no-time-delay hard disk video recorder |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180105 |
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| RJ01 | Rejection of invention patent application after publication |