CN101931774A - 数字视频录像***及其检测方法 - Google Patents
数字视频录像***及其检测方法 Download PDFInfo
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- CN101931774A CN101931774A CN200910303663XA CN200910303663A CN101931774A CN 101931774 A CN101931774 A CN 101931774A CN 200910303663X A CN200910303663X A CN 200910303663XA CN 200910303663 A CN200910303663 A CN 200910303663A CN 101931774 A CN101931774 A CN 101931774A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/18—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast
- H04N7/181—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast for receiving images from a plurality of remote sources
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N17/00—Diagnosis, testing or measuring for television systems or their details
- H04N17/06—Diagnosis, testing or measuring for television systems or their details for recorders
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/41—Structure of client; Structure of client peripherals
- H04N21/422—Input-only peripherals, i.e. input devices connected to specially adapted client devices, e.g. global positioning system [GPS]
- H04N21/4223—Cameras
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/433—Content storage operation, e.g. storage operation in response to a pause request, caching operations
- H04N21/4334—Recording operations
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/442—Monitoring of processes or resources, e.g. detecting the failure of a recording device, monitoring the downstream bandwidth, the number of times a movie has been viewed, the storage space available from the internal hard disk
- H04N21/4425—Monitoring of client processing errors or hardware failure
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/76—Television signal recording
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/79—Processing of colour television signals in connection with recording
- H04N9/80—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback
- H04N9/82—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback the individual colour picture signal components being recorded simultaneously only
- H04N9/8205—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback the individual colour picture signal components being recorded simultaneously only involving the multiplexing of an additional signal and the colour video signal
- H04N9/8227—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback the individual colour picture signal components being recorded simultaneously only involving the multiplexing of an additional signal and the colour video signal the additional signal being at least another television signal
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- Databases & Information Systems (AREA)
- Television Signal Processing For Recording (AREA)
- Closed-Circuit Television Systems (AREA)
- Testing, Inspecting, Measuring Of Stereoscopic Televisions And Televisions (AREA)
Abstract
一种数字视频录像***,包括若干摄像头、一影像解码器、一影像多工器、一影像流压缩单元、一处理器、一存储单元、一影像流解压缩单元、一影像编码器及若干开关单元,所述影像解码器、影像多工器、影像流压缩单元、处理器及存储单元依次相连,所述处理器还通过所述影像流解压缩单元与影像编码器相连,每一开关单元的第一端连接于一摄像头,第二端均连接于所述影像编码器,第三端均连接于所述影像解码器,所述开关单元用于选择性的将所述摄像头与影像解码器连通或者将所述影像编码器与影像解码器连通。上述数字视频录像***可以进行自我检测。本发明还提供了一种数字视频录像***的检测方法。
Description
技术领域
本发明涉及一种数字视频录像***及其检测方法。
背景技术
数字视频录像(Digital Video Recorder,DVR)***广泛应用于环境及人员的安全监控,以提供即时监控及事后影像查阅。由于应用的特殊性,数字视频录像***通常为长时间的不间断工作,且其安装环境较为恶劣。因此,需要时常对所述数字视频录像***进行检测,以确保其能正常工作。
发明内容
鉴于以上内容,有必要提供一种数字视频录像***及其检测方法,其可方便的对自身进行检查,以得知自身是否可以正常工作。
一种数字视频录像***,包括若干摄像头、一影像解码器、一影像多工器、一影像流压缩单元、一处理器、一存储单元、一影像流解压缩单元、一影像编码器及若干开关单元,所述影像解码器、影像多工器、影像流压缩单元、处理器及存储单元依次相连,所述处理器还通过所述影像流解压缩单元与影像编码器相连,每一开关单元的第一端连接于一摄像头,第二端均连接于所述影像编码器,第三端均连接于所述影像解码器,所述开关单元用于选择性的将所述摄像头与影像解码器连通或者将所述影像编码器与影像解码器连通。
一种数字视频录像***的检测方法,包括:
一处理器读取一标准压缩影像数据并将其传送给一影像流解压缩单元;
所述标准压缩影像数据经所述影像流解压缩单元处理之后,依次经过一影像编码器、一影像解码器、一影像多工器及一影像流压缩单元处理以得到一影像压缩数据;以及
所述处理器将影像压缩数据与标准压缩影像数据进行比较,并根据两者之间的差异是否在一设定范围之内判断所述数字视频录像***是否正常工作。
上述数字视频录像***在检测时通过开关单元连通所述影像编码器与影像解码器,并将事先存储的标准压缩视频数据依次经过处理器、影像流解压缩单元、影像编码器、影像解码器、影像多工器、影像流压缩单元处理之后再传送至所述处理器,由所述处理器将得到的视频数据与标准压缩视频数据进行比较,以得之此时所述数字视频录像***是否正常工作。
附图说明
图1是本发明数字视频录像***的较佳实施方式的方框图。
图2是本发明数字视频录像***的检测方法的较佳实施方式的流程图。
具体实施方式
下面结合附图及较佳实施方式对本发明作进一步详细描述:
请参考图1,本发明数字视频录像***包括若干摄像头10、若干开关单元20、一影像解码器(Video Decoder)30、一影像多工器(Video Multiplexer)40、一影像流压缩单元(Video Stream Compressor)50、一处理器60、一存储单元70、一影像流解压缩单元(VideoStream De-Compressor)80及一影像编码器(Video Encoder)90。
每一摄像头10均通过一开关单元20与所述影像解码器30的输入端相连,所述影像解码器30的输出端依次通过所述影像多工器40、影像流压缩单元50、处理器60后与存储单元70相连。所述存储单元70还依次通过所述处理器60、影像流解压缩单元80与所述影像编码器90的输入端相连,所述影像编码器90的输出端与所述开关单元20均相连。其中,每一开关单元20可选择性的将所述摄像头10与影像解码器30连通或者将所述影像编码器90与影像解码器30连通。所述开关单元20可为逻辑开关,其根据用户的选择连通对应的设备。
当所述数字视频录像***处于正常工作模式时,所述开关单元20将摄像头10与所述影像解码器30连通:
所述若干摄像头10得到若干影像,并将其传送给所述影像解码器30。所述影像解码器30将得到的影像进行处理以得到对应的影像数字信号,并传送给所述影像多工器40。所述影像多工器40通过总线与所述影像流压缩单元50相连,可将由若干摄像头10取得的影像所对应的影像数字信号单独或者按不同组合传送至所述影像流压缩单元50。所述影像流压缩单元50通过影像压缩演算法,如Mpeg4等对影像数字信号进行压缩处理,以得到压缩影像数据。所述压缩影像数据被传送至所述处理器60中,并由所述处理器60将压缩影像数据存储于所述存储单元70中。
所述处理器60读取存储于所述存储单元70内部的压缩影像数据,并将其传送至所述影像流解压缩单元80。所述影像解压缩单元80对所述压缩影像数据进行解压缩以将其恢复成原始影像数字信号。所述原始影像数字信号经过所述影像编码器90处理之后得到的影像被传送至显示器进行显示。
当所述数字视频录像***处于自我检测模式时,开关单元20将所述影像编码器90与所述影像解码器30连通:
所述存储单元70中事先存储一段预录之标准压缩影像数据。所述处理器60读取所述标准压缩影像数据并将其传送给所述影像流解压缩单元80。所述标准压缩影像数据依次经过所述影像流解压缩单元80、影像编码器90、影像解码器30、影像多工器40、影像流压缩单元50处理之后传送至所述处理器60。所述处理器60将得到的影像压缩数据与事先存储的标准压缩影像数据进行比较,如果该影像压缩数据与标准压缩影像数据之间的差异超过一设定范围,则判断此时所述数字视频录像***不能正常工作。相反,如果该影像压缩数据与标准压缩影像数据之间的差异未超过该设定范围,则判断此时所述数字视频录像***正常工作。其中,所述设定范围可由用户根据需要的数字视频录像***的工作精度进行设定,如当需要所述数字视频录像***的工作精度较低时,则所述设定范围较大;相反,当需要所述数字视频录像***的工作精度较高时,则所述设定范围较小。
请参考图2,本发明数字视频录像***的检测方法包括以下步骤:
步骤S1:所述处理器60读取所述标准压缩影像数据并将其传送给所述影像流解压缩单元80。
步骤S2:所述标准压缩影像数据依次经过所述影像流解压缩单元80、影像编码器90、影像解码器30、影像多工器40、影像流压缩单元50处理之后传送至所述处理器60。
步骤S3:所述处理器60将得到的影像压缩数据与事先存储的标准压缩影像数据进行比较,并根据两者之间的差异是否在所述设定范围之内判断所述数字视频录像***是否正常工作。
上述数字视频录像***在正常工作时通过开关单元20将所述影像编码器90与所述影像解码器30连通,并将所述影像依次经过所述影像解码器30、影像多工器40、影像流压缩单元50处理之后传送至处理器60,由所述处理器60存储至存储单元70中;在检测时则通过开关单元20连通所述影像编码器90与影像解码器30,并将事先存储的标准压缩视频数据依次经过处理器60、影像流解压缩单元80、影像编码器90、影像解码器30、影像多工器40、影像流压缩单元50处理之后再传送至所述处理器60,由所述处理器60将得到的视频数据与标准压缩视频数据进行比较,以得之此时所述数字视频录像***是否正常工作。
Claims (6)
1.一种数字视频录像***,包括若干摄像头、一影像解码器、一影像多工器、一影像流压缩单元、一处理器、一存储单元、一影像流解压缩单元及一影像编码器,所述影像解码器、影像多工器、影像流压缩单元、处理器及存储单元依次相连,所述处理器还通过所述影像流解压缩单元与影像编码器相连,其特征在于:所述数字视频录像***还包括若干开关单元,每一开关单元的第一端连接于一摄像头,第二端均连接于所述影像编码器,第三端均连接于所述影像解码器,所述开关单元用于选择性的将所述摄像头与影像解码器连通或者将所述影像编码器与影像解码器连通。
2.如权利要求1所述的数字视频录像***,其特征在于:所述开关单元为逻辑开关。
3.如权利要求1所述的数字视频录像***,其特征在于:所述存储单元中事先存储一预录之标准压缩影像数据。
4.一种数字视频录像***的检测方法,包括:
一处理器读取一标准压缩影像数据并将其传送给一影像流解压缩单元;
所述标准压缩影像数据经所述影像流解压缩单元处理之后,依次经过一影像编码器、一影像解码器、一影像多工器及一影像流压缩单元处理以得到一影像压缩数据;以及
所述处理器将影像压缩数据与标准压缩影像数据进行比较,并根据两者之间的差异是否在一设定范围之内判断所述数字视频录像***是否正常工作。
5.如权利要求4所述的数字视频录像***的检测方法,其特征在于:
如果所述影像压缩数据与标准压缩影像数据之间的差异超过所述设定范围,则判断所述数字视频录像***不能正常工作。
6.如权利要求4所述的数字视频录像***的检测方法,其特征在于:
如果所述影像压缩数据与标准压缩影像数据之间的差异未超过所述设定范围,则判断所述数字视频录像***正常工作。
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US12/547,496 US20100329631A1 (en) | 2009-06-25 | 2009-08-26 | Digital video recording system and detecting method thereof |
EP09171652A EP2267673A3 (en) | 2009-06-25 | 2009-09-29 | Digital video recording system and self-test method thereof |
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Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108156452A (zh) * | 2017-12-22 | 2018-06-12 | 深圳怡化电脑股份有限公司 | 一种检测传感器的方法、装置、设备及存储介质 |
CN109379588A (zh) * | 2018-12-29 | 2019-02-22 | 广州敏视数码科技有限公司 | 一种用于高清dvr的自动化测试方法及*** |
CN112019837A (zh) * | 2020-08-27 | 2020-12-01 | 珠海大横琴科技发展有限公司 | 一种视频压缩*** |
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JPH05211673A (ja) * | 1991-06-27 | 1993-08-20 | Mitsubishi Electric Corp | 画像伝送装置 |
US5497419A (en) * | 1994-04-19 | 1996-03-05 | Prima Facie, Inc. | Method and apparatus for recording sensor data |
GB9607591D0 (en) * | 1996-04-12 | 1996-06-12 | Snell & Wilcox Ltd | Playback and monitoring of compressed bitstreams |
US6400400B1 (en) * | 1997-07-30 | 2002-06-04 | Sarnoff Corporation | Method and apparatus for automated testing of a video decoder |
KR100322485B1 (ko) * | 2001-07-05 | 2002-02-07 | 이동욱 | 다중채널 영상신호 부호화 장치 및 그 방법 |
JP4362248B2 (ja) * | 2001-09-03 | 2009-11-11 | パイオニア株式会社 | 情報記録再生装置およびコンピュータプログラム |
JP2004145482A (ja) * | 2002-10-22 | 2004-05-20 | Matsushita Electric Ind Co Ltd | 画像検索装置 |
JP2004282283A (ja) * | 2003-03-14 | 2004-10-07 | Toshiba Corp | Cctv画像配信システム、およびその通信制御方法 |
TWI309948B (en) * | 2006-06-27 | 2009-05-11 | Realtek Semiconductor Corp | Method of generating video driving signal and apparatus thereof |
US8559499B2 (en) * | 2007-10-26 | 2013-10-15 | Zoran (France) S.A. | Frame buffer compression for video processing devices |
-
2009
- 2009-06-25 CN CN200910303663XA patent/CN101931774A/zh active Pending
- 2009-08-26 US US12/547,496 patent/US20100329631A1/en not_active Abandoned
- 2009-09-29 EP EP09171652A patent/EP2267673A3/en not_active Withdrawn
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108156452A (zh) * | 2017-12-22 | 2018-06-12 | 深圳怡化电脑股份有限公司 | 一种检测传感器的方法、装置、设备及存储介质 |
CN109379588A (zh) * | 2018-12-29 | 2019-02-22 | 广州敏视数码科技有限公司 | 一种用于高清dvr的自动化测试方法及*** |
CN112019837A (zh) * | 2020-08-27 | 2020-12-01 | 珠海大横琴科技发展有限公司 | 一种视频压缩*** |
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EP2267673A3 (en) | 2011-12-14 |
EP2267673A2 (en) | 2010-12-29 |
US20100329631A1 (en) | 2010-12-30 |
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