CN101212701B - Self-diagnosing method for digital video recorder - Google Patents
Self-diagnosing method for digital video recorder Download PDFInfo
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- CN101212701B CN101212701B CN2006101479292A CN200610147929A CN101212701B CN 101212701 B CN101212701 B CN 101212701B CN 2006101479292 A CN2006101479292 A CN 2006101479292A CN 200610147929 A CN200610147929 A CN 200610147929A CN 101212701 B CN101212701 B CN 101212701B
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Abstract
The invention relates to a self-diagnostic method for a digital video recorder. When in execution of self-diagnostic operation on the digital video recorder connected with a plurality of cameras used for monitoring, the invention can detect particular channels chosen by users or whether influencing signals of every channel are wrong or not; meanwhile, the invention can be continuously connected with a Decoder Chip, a MUX Chip, a PCI Bridge Chip and other electronic elements. The invention only filters and resets the malfunctioned electronic elements which minimize the frequency of restarting a system for a long time. Therefore, the self-diagnostic method of the invention can stably maintain the monitoring function of the digital video recorder.
Description
Technical field
The invention relates to OBD (the for self diagnosis) method of digital video recorder.Such as, accept the image signal of shooting according to a plurality of camera for monitoring, this image signal is represented through monitor, perhaps waits the self-diagnosing method that on recording medium, writes down the digital video recorder of image signal through hard disk (HDD).
Background technology
Ordinary circumstance is provided with camera for monitoring at particular place and imagines the relevant range.Such as, as illustrated that kind on Fig. 1,16 camera for monitoring (1～16) 100 that are provided with in each zone
1-100
16The quilt shooting body of shooting relevant range is to digital video recorder 200 output informations remotely.
In addition, digital video recorder recited above (200) is according to the supervision reflection of top said camera for monitoring shooting; Be presented at picture through monitor (Monitor) 300; Decode to keeping watch on reflection simultaneously, above the hard disk that in equipment, comprises (HDD) etc., utilize frame to come record.And, on the described digital video recorder 200, possessed ' guarder (Watch Dog) ' function in the above.This ' when guarder (Watch Dog) ' function has the defective on hardware or software take place, restarting systems (Re-Booting), the function of execution normal running can be restored system mistake effectively.
But, on the described in the above digital video recorder, carry out common ' guarder ' function after, if all restart all systems, need a very long time during system restart.Therefore, at this moment between the section generation that can not show the supervision reflection of acceptance on the inherent monitor or problem points such as can not on hard disk, write down.
Summary of the invention
Therefore, the present invention proposes in order to solve problem points recited above.The self-diagnosing method that the purpose of this invention is to provide a kind of digital video recorder; When carrying out the OBD operation on the digital video recorder that a plurality of camera for monitoring are connected; The mistake that influences signal that can detect special channels that the user selects or each channel whether; Simultaneously carry out continuously and be connected with coding chip (Decoder Chip), multichannel access node chip (MUX Chip), pci bridge chip circuit elements such as (PCI Bridge Chip); Only the circuit element that makes a mistake is screened replacement (Reset); The long system restart number of times of needs is minimized, with the function for monitoring of keeping digital video recorder that can be stable.
To achieve these goals, the self-diagnosing method according to digital video recorder of the present invention has following architectural feature:
The 1st step: when setting the OBD pattern; Whether the mistake of the special channels that the detection user selects or the image signal of each channel; If when on channel arbitrarily, detecting mistake, converting digital image signal and signal processing to the simulation image signal is that the coding chip of digital image signal is connected; If when often carrying out, reset after only screening coding chip with the malunion of described coding chip;
The 2nd step: if when normally carrying out with being connected of described coding chip; Be connected with the chaotic multichannel access node chip of a plurality of digital image signals; If in the time of can normally carrying out with being connected of described multichannel access node chip, be connected with the pci bridge chip of catching chaotic digital image signal; If with being connected of described multichannel access node chip during abnormal the execution, reset after only screening multichannel access node chip;
The 3rd step: if when normally carrying out with being connected of described pci bridge chip, just executive system does not restart operation; If when often carrying out with the malunion of described pci bridge chip, executive system restarts operation.
And described the 3rd step has also comprised following structure as characteristic.If when normally carrying out with being connected of described pci bridge chip, restart under the state of operation in executive system not, just show the descriptive information of confirming channel correlation video camera connection status.
And; The whether detection of the mistake of described image signal; Be that executive program according to device driver (Device Driver) carries out, described coding chip, multichannel access node chip, pci bridge chip are connected communication with device driver through I2C.
Effect of the present invention:
Self-diagnosing method as foundation recited above digital video recorder of the present invention; When carrying out the OBD operation on the digital video recorder that a plurality of camera for monitoring are connected; The mistake that influences signal that can detect special channels that the user selects or each channel whether; Simultaneously carry out continuously and be connected with coding chip (Decoder Chip), multichannel access node chip (MUX Chip), pci bridge chip circuit elements such as (PCI Bridge Chip); Only the circuit element that makes a mistake is screened replacement (Reset), the long system restart number of times of needs is minimized.Therefore the present invention is an invention that practicality is arranged very much of the function for monitoring of keeping digital video recorder that can be stable.
For further specifying above-mentioned purpose of the present invention, design feature and effect, below will combine accompanying drawing figure that the present invention is carried out detailed description.
Description of drawings
Fig. 1 representes, on common digital video recorder, connects the embodiment of a plurality of camera for monitoring.
Fig. 2 representes, is suitable for the structure of digital video recorder of the present invention.
Fig. 3 representes, the operational flowchart of the self-diagnosing method of foundation digital video recorder of the present invention.
The symbol description of major part in the accompanying drawing:
100: camera for monitoring 200: digital video recorder
11-14: coding chip 20: multichannel access node chip
30:PCI bridge chip 40: device driver (program)
Embodiment
Below, with reference to accompanying drawing, the embodiment according to the self-diagnosing method of digital video recorder of the present invention is elaborated.
At first, the digital video recorder that is suitable for according to self-diagnosing method of the present invention is to be formed by following structure.Such as illustrated that kind in Fig. 2, also has pci bridge chip (PCI Bridge Chip) 30 and device driver (comprising driver) 40 at 11～14 and 1 multichannel access node chips of 4 coding chips (Decoder Chip) (MUX Chip) 20.
In addition, on described in the above 4 coding chip 11-14,, change and signal processing to digital image signal from the simulation image signal that 4 camera for monitoring that connect transmit through each 4 channel (CH1-4, CH5-8, CH9-12, CH13-16).Described in the above multichannel access node chip 20 according to 4 coding chip 11-14 recited above, after 16 digital image signal confusions of output, outputs to pci bridge chip 30 recited above.
Such as; Described in the above multichannel access node chip 20; According to controling of device driver recited above (comprising driver) 40, after 16 whole confusions of digital image signal recited above, output to pci bridge chip 30 recited above; After only part being screened confusion in perhaps described 16 digital image signals in the above, output to pci bridge chip 30 recited above.
And; Pci bridge chip 30 recited above is through multichannel access node chip 20 recited above; Catch the digital image signal of (Capture) output; 16 canal digital image signals output to device driver 40 recited above to the chaotic reflection of the digital image signal screening of part in chaotic reflection or 16 channels, are showing on the monitor or are recording on the recording medium as the hard disk.
In addition, executive program has following process on the described in the above device driver 40.
Whether are the special channels that the monitoring user selects or the image signal mistake of each channel; Simultaneously with coding chip recited above, multichannel access node chip, pci bridge chip (PCI Bridge Chip) is carried out continuous being connected in addition; Only the circuit element screening that defective takes place is reset, perhaps restarting systems is whole.For the detailed description of this process, please with reference to following.
Fig. 3 representes, the operational flowchart of the self-diagnosing method of foundation digital video recorder of the present invention.
S10, S11; For example; If the user is provided with and has selected and during the OBD pattern of the special channels of appointment or each channel; On the executive program of the device driver 40 of telling a story in the above, video loss (Video Loss) in the reflection of confirming whether to take place to be caught by pci bridge chip 30 recited above is also just had a talk about affirmation whether on image signal, make a mistake (Error).
S12, S13, in addition, described in the above affirmation result is if in special channels that the user selects or when monitoring out video loss on the channel arbitrarily, will begin to carry out the coding chip of channel correlation and the operation that is connected.Such as if when the not normal monitoring of the image signal of the 1st channel is not come out, the image signal that will begin to carry out the 1st channel recited above is treated to the 1st coding chip 11 and I2C attended operation S13 of digital signal.
S14, and, through I2C attended operation recited above, judge whether normal response of the 1st coding chip 11.
If S15 when the 1st coding chip 11 recited above receives a reply, on the executive program of described device driver (program) 40, carries out multichannel access node chip 20 recited above and I2C attended operation in the above.
S17 still, if when the 1st coding chip 11 recited above is received no reply, carries out the operation of resetting to the 1st coding chip recited above 11 screening backs.If when multichannel access node chip 20 recited above is received no reply, screen multichannel access node chip recited above 20 backs and carry out the operation of resetting.
S16, above-mentioned S15 continued is differentiated whether normal response of the 1st coding chip 11 and multichannel access node chip 20, does not reply, to above-mentioned flow process S17.
S18 still, if when the 1st coding chip 11 recited above normally receives a reply with multichannel access node chip 20, will begin to carry out the I2C attended operation with pci bridge chip 30 recited above.
S19 differentiates whether normal response of pci bridge chip.
S20, if when pci bridge chip recited above 30 is received no reply, as generally ' guarder (Watch Dog) ' function such, all operations of restarting systems.
S21; On the contrary; If receive a reply, but when executive system does not restart the state of operation, will export the information frame that requires that shows the connection status of confirming associated camera (as: Cameral) from pci bridge chip 30 recited above; Except on the coding chip of pci bridge chip 30 recited above or the multichannel access node chip 20 during defectiveness, reset in screening associated translation chip 11-14 or multichannel access node chip 20 backs.So just can the number of starts of restarting systems be minimized.
Those of ordinary skill in the art will be appreciated that; Above embodiment is used for explaining the present invention; And be not to be used as qualification of the present invention; As long as in connotation scope of the present invention, all will drop in the scope of claims of the present invention variation, the modification of the above embodiment.
Claims (3)
1. the self-diagnosing method of a digital video recorder is characterized in that comprising:
The 1st step: when setting the OBD pattern; Whether the mistake of the special channels that the detection user selects or the image signal of each channel; If when on channel arbitrarily, detecting mistake, carrying out the simulation image signal, to convert digital image signal and signal processing to be that the coding chip of digital image signal is connected with I2C; When if described coding chip and I2C malunion are often carried out, reset after only screening coding chip;
The 2nd step: if described coding chip is connected with I2C when normally carrying out; Carrying out the chaotic multichannel access node chip of a plurality of digital image signals is connected with I2C; If described multichannel access node chip is connected with I2C in the time of can normally carrying out, carries out the pci bridge chip of catching chaotic digital image signal and be connected with I2C; When if described multichannel access node chip is connected abnormal the execution with I2C, reset after only screening multichannel access node chip;
The 3rd step: if described pci bridge chip is connected with I2C when normally carrying out, just executive system does not restart operation; If when described pci bridge chip and I2C malunion were often carried out, executive system restarted operation.
2. the self-diagnosing method of digital video recorder as claimed in claim 1 is characterized in that also having:
In described the 3rd step, if when described pci bridge chip is connected normal the execution with I2C, restart under the state of operation in executive system not, just show the descriptive information of confirming channel correlation video camera connection status.
3. the self-diagnosing method of digital video recorder as claimed in claim 1 is characterized in that also having:
The whether detection of the mistake of described image signal is that the executive program according to device driver carries out, and described coding chip, multichannel access node chip, pci bridge chip are connected communication with device driver through I2C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2006101479292A CN101212701B (en) | 2006-12-25 | 2006-12-25 | Self-diagnosing method for digital video recorder |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2006101479292A CN101212701B (en) | 2006-12-25 | 2006-12-25 | Self-diagnosing method for digital video recorder |
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| CN101212701A CN101212701A (en) | 2008-07-02 |
| CN101212701B true CN101212701B (en) | 2012-07-18 |
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| CN2006101479292A Expired - Fee Related CN101212701B (en) | 2006-12-25 | 2006-12-25 | Self-diagnosing method for digital video recorder |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102999460A (en) * | 2011-09-09 | 2013-03-27 | 昆达电脑科技(昆山)有限公司 | Resetting system of Peripheral Command Indicator (PCI) groups |
| US9282413B2 (en) * | 2013-07-16 | 2016-03-08 | Intel Corporation | Apparatus and method for automatic audio system and recovery from unexpected behaviors |
| CN109769114B (en) * | 2018-12-19 | 2020-03-20 | 广州亚美信息科技有限公司 | Vehicle-mounted camera output guarantee circuit and guarantee method |
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| CN1229321A (en) * | 1996-02-02 | 1999-09-22 | 汤姆森消费电子有限公司 | Digital video recorder error recovery method |
| CN2679930Y (en) * | 2004-03-18 | 2005-02-16 | 上海博超科技有限公司 | Embedded net hard disk vedio player |
| CN1601482A (en) * | 2003-09-27 | 2005-03-30 | 鸿富锦精密工业（深圳）有限公司 | Backing plate diagnostic system and method thereof |
| CN2812444Y (en) * | 2005-04-19 | 2006-08-30 | 广州金鹏集团有限公司 | Video recorder with large-capacity embedded digital harddisk |
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2006
- 2006-12-25 CN CN2006101479292A patent/CN101212701B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1229321A (en) * | 1996-02-02 | 1999-09-22 | 汤姆森消费电子有限公司 | Digital video recorder error recovery method |
| CN1601482A (en) * | 2003-09-27 | 2005-03-30 | 鸿富锦精密工业（深圳）有限公司 | Backing plate diagnostic system and method thereof |
| CN2679930Y (en) * | 2004-03-18 | 2005-02-16 | 上海博超科技有限公司 | Embedded net hard disk vedio player |
| CN2812444Y (en) * | 2005-04-19 | 2006-08-30 | 广州金鹏集团有限公司 | Video recorder with large-capacity embedded digital harddisk |
Non-Patent Citations (2)
| Title |
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| 李山德等.基于WinDriver看门狗在电力自动化***中的实现.《电力自动化设备》.2006,第26卷(第4期),84-86. * |
| 章立等.基于嵌入式Linux的数字视频录像机的设计与实现.《微型电脑应用》.2005,第21卷(第6期),19-21. * |
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Granted publication date: 20120718 Termination date: 20131225 |