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Another Great wireless network camera Article
Security Camera Recording Systems - An Introduction to Current Technology
In this day and age, most people are very familiar with Video Surveillance systems. From small two and four camera systems used to monitor homes and convenience stores to gigantic systems with hundreds and perhaps thousands of cameras, the use of video surveillance is increasing daily. Some studies have shown that an average person will be recorded on a video surveillance system at least four times every day.
So you want to install your own Video Surveillance System? Ten years ago, I would have never supported the idea, but recent innovations in Video Surveillance Technology have made it relatively easy to install your own surveillance system. The first step is to understand the different technologies available for recording video.
The effectiveness of your Video Surveillance system is based around one thing, the quality of the recorded images. There are currently three types of head end recording solutions currently being offered in the video surveillance market. They are the Analog/Time Lapse Recorder (VCR) Systems, the Digital Hard Drive Recording Systems which operate like a VCR but utilize hard-drives to store video and the top of the line PC Based Digital Video Recording Systems or DVR?s.
The use of Time Lapse Video Tape Recorders in the video surveillance industry started a little over 25 years ago. The first systems required a Video Recorder and a monitor for every camera. Innovations in the industry included the video multiplexer and splitters that allowed multiple cameras to be viewed and recorded on a single video tape. Until 4 or 5 years ago, this technology was still the most prevalent form of recording video.
A Time Lapse Recorder has a single video input that allows you to record the incoming video signal. A standard VCR records and plays back video at about 30 frames per second, which on a standard T-160 video tape allows you to record 2-hours of video. A time lapse video recorder slows down the rate at which the images are recorded. Some Recorders allow you to extend the recording up to 960 hours onto a single video tape.
Be aware that when you are recording 960 hours on one VCR tape you are only recording 1 frame or picture every 9 seconds. When programming a time lapse recorder I strongly recommend you do not set the recording duration for more than 3 days or 72 hours. This setting allows you to record over a weekend without changing the tape. Three days of recording on one tape records 1.5 frames or pictures per second. Not great, but not bad considering this is a 20 year old technology.
This works O.K. for a single camera system. Let?s say for example you need 4, 8 or even 16 cameras to watch your property. You could either purchase a monitor and a time lapse recorder for each camera, or you can add a video multiplexer.
A video multiplexer allows you to view and record multiple cameras on a single time lapse recorder and video monitor. Multiplexers are offered in color or black & white in 4, 9 or 16 camera configurations. A video multiplexer works by digitally separating the incoming video signals and dividing them out, one at a time, to a time lapse recorder. It sends the image from camera 1 to frame 1, camera 2 to frame 2, camera 3 to frame 3 and so on. An added benefit of multiplexers is the ability to view multiple cameras simultaneously on a single CCTV Monitor.
A major drawback is that during the digitizing of the incoming video signals, about ? of the information contained in the image is lost. Also remember that you are now limiting the total number of images per second for any given number of cameras. With 16 cameras recording on a single video tape for 72 hours, you are now getting about 1 frame of video from each camera about every 3 seconds.
If a video is recorded on a time lapse recorder through a multiplexer, you must use a time lapse recorder and a multiplexer for playback. A standard VCR cannot process the digital multiplexing encoded in the time lapse format and will not provide a useful playback.
With the advent of the digital age, manufacturers soon devised a way to combine the best features of the Time Lapse Recorder and the Video Multiplexer into a single system that utilizes hard drives rather than VCR tapes to store the recorded images.
Hardware based digital video recorders operate much like a VCR, complete with shuttle and jog controls. Most will utilize some type of traditional CCTV or SVGA Video monitor to view the video.
These units are built from the ground up to perform one specific function, record video. While they do operate some software internally, the video processing is hardware based. It is this hardware which provides the live viewing and high resolution recording. Many of these systems can record high resolution video from 16 or more cameras at up to 160 images per second.
No more VCR tapes are required as all of the video is recorded onto hard drives. How long the video can be stored is merely a function of the total images per second being recorded, the size of the image files and the total size of the installed hard drive(s).
In addition, these recorders utilize a process called first-in first-out to process video (FIFO). They will record video until the designated amount of disk space has been used. Then the system will delete the oldest clips and record the new video. This provides a continuous loop of recordings at anytime.
Some other interesting benefits of digitally processing the video are features such as motion or event based recording options and advanced playback capabilities. In the old days of VCR?s & Multiplexers, it could literally take many hours to try and find an event that occurred overnight. Now, the advanced digital search functions allow you to find archived video in seconds, not hours.
A PC based DVR is comprised of a computer, video capture cards and a software package that allows full motion video to be recorded and played back on a standard personal computer. Due to their superior processing speeds, some of these 16 camera systems are capable of recording up to 480 images per second, which equates to 30 images per second, or real time video for every camera connected to the system.
Many people consider the PC based Digital Video Recorders to be much easier to use and more flexible than the Digital Hard Drive Recorders, and they offer selectable recording resolution that is up to 4 times greater than the resolution of the old Time Lapse Recorders.
PC based DVR's are programmed and operated with a keyboard and mouse. The video is recorded to the computers hard drive in a compressed format. This compression allows a huge amount of video to be stored. On average, a four camera system recording continuously will record about 30 days of video on one single 80 gig hard drive. To double the recording days simply add another 80 gig hard drive.
PC based DVR?s are designed so they do not require any scheduled actions or maintenance to provide uninterrupted video recordings. Recorded video is played back on the computer monitor and it can be printed, saved to a floppy disk or burned to a CD. These systems allow you to view and playback any combination of cameras without interrupting the systems recording process.
A very popular feature of the PC Based Digital Video Recorders is that most of them support remote viewing from any PC that is properly equipped by using Windows Media Player or other remote viewing software. This can allow you to check on your home or office from a remote location via the internet.
Which system is right for you? The final choice might come down to budget, or custom features that you can?t live without, but whether you choose a tried and true Time Lapse Recorder, or opt for a state of the art Digital Video Recorder, you are sure to improve the safety and security of your home or office by installing a Video Surveillance System.
Roy Stephenson has many years of experience designing and installing high end Integrated Security Systems. He is currently the VP of Marketing at http://www.Security-Kits.Com |
Recommended wireless network camera Items
Fenix L2D-CE (Cree Edition LED) Digital LED Flashlight (6 Output levels) - 135 Lumens; uses 2 x AA batteries
Fenix L2D-CE (Cree Edition LED) Digital LED Flashlight (6 Output levels) - 135 Lumens; uses 2 x AA batteries
The Fenix L2D-CE - the mini flashlight with brilliant brightness. The L2D-CE is brighter than a 5W Surefire L2 on high, and is brighter than a Streamlight Stinger, too. These new Cree LEDs are amazing. The flashlight with a digital circuit with 2 output modes and 6 output levels can be easily and conveniently slipped in your pocket/Belt holster. The Maximum output is 135 Lumens and it lasts 2.4 hours with 2 AA alkaline batteries (batteries not included). At the lowest mode, it is 9 lumens at 55 hours. There are two modes of outputs - selected by turning the bezel (patented). The brightness can be adjusted by lightly pressing the tail switch. With the characteristic inbuilt current regulation circuit and stable high brightness, the Fenix L2D-CE is able to meet all your lighting needs whether you're a police officer, outdoor enthusiast or a person who appreciates a quality flashlight.
Circuit Digitally Regulated for Constant Brightness. New ability to aid in an emergency. Super High brightness, Long Runtime, Compact size. Push button tail cap switch. Input voltage: 1.5V~4V;
5.85 inch(L) x 0.83 inch(Dia). 56-gram (excluding batteries);
Available Color: Black only
(batteries not included)
Customer Review: Surprisingly bright, good strong beam, but beware battery use
I've used a handful of different LED flashlights for my job (appliance repair) and this is easily the most powerful so far. It uses AA batteries so you can pick some up just about anywhere - which is good, because it eats through batteries pretty fast. I use the light daily, and during one particularly busy work week I had to replace the batteries twice (as opposed to replacing batteries perhaps once or twice a month with other lights, but then they were nowhere near as bright).
I've tried different types of batteries but have seen no appreciable difference in how long they last. Also, when the flashlight is left on for long periods of time, it does get quite warm to the touch. Nevertheless, I like this light and the ability to select the level of brightness is a useful feature. I bought one for a coworker and he likes it too, but also noticed that it needs batteries frequently.
If you will be using it occasionally or don't mind the expense of batteries this is a pretty slick little flashlight.
Customer Review: Nothing Comes Close - Simply The Best
So bright you cannot look at the beam, 2x AA battery and runs at full power longer than any other light I have used. I have both the L2D & L1D. Keep one at work, home, and in each glove box.
These lights are absolutely worth every cent. You will not be disapointed, better than Surefire and use off the shelf battery to boot.
I have had several months of daily use with no issues.
Canon SD500 Digital Camera Accessory Bundle
Canon SD500 Digital Camera Accessory Bundle
SanDisk SDCFH-004G-A11 4GB/15MB Ultra II CF Card ( US Retail Package )
SanDisk SDCFH-004G-A11 4GB/15MB Ultra II CF Card ( US Retail Package )
Delivers high performance you can trust with your precious memories / Fast 15 MB/sec Read/Write speeds / Higher capacity for capturing photos and video
Customer Review: COMPACT FLASH CARD
This product works extremely well. And compared to my Extreme III, I didn't notice any differance on Burst mode "Large".
On RAW + Large, there was very little of a differance.
Great Product.
Customer Review: Do you know how many pics this card
holds? A HUGE amount. Get it. It's a great price. I've never had a problem with these cards.
Canon Digital Elph Accessory Kit for Canon SD950 IS, SD900, SD870 IS & SD850 IS Digital Cameras
Canon Digital Elph Accessory Kit for Canon SD950 IS, SD900, SD870 IS & SD850 IS Digital Cameras
designed for use with Canon PowerShot SD700 IS * genuine leather carrying case (PSC-55) * leather hand strap * NB-5L lithium ion rechargeable battery * plastic-coated braided metal neck strap *
Customer Review: Except the battery, nothing I can use.
I bought this pack mainly for the battery since it is only a couple dollars more and I'm getting a leather case as well which I might be able to use.
However, the only thing I can use from this pack is the battery. The metal neck strap will eventually scratch the camera if I use it since it is METAL! Plus I've never seen anyone hanging their camera in this size on their neck and have it bouncing on your chest when you walk.
With the case, it doesn't fit my Canon SD870 in their. It is just way too tight. When I pull out the camera, either I have to pull the attached strap so hard that I'm afraid it will break, or if I grab the camera, my thumb will pull and break the battery compartment door.
I would recommend either PSC-50 or PSC-90. Try it at your local store to see which one fit the best of your camera and order it online for a cheaper price.
Customer Review: Canon leather case + battery kit
You never know when your battery is going to die...and it may happen when you really need it! Furthermore the quality/price ratio is extremely interesting. I'd strongly reccomend to buy this kit.
News about wireless network camera
HP 3G Smartphone Delivers Productivity On the Go - RedOrbit
Sun, 03 Aug 2008 11:35:24 GMT
HP 3G Smartphone Delivers Productivity On the Go RedOrbit, TX - Wireless transmission speeds may vary based upon network capabilities and other conditions. Establishment and continuation of a wireless connection depends ... |
Wireless Network Security
Thu, 24 Jul 2008 10:51:38 -0700
It seems that everything is going wireless these days. Though this is very convenient, it does bring up some issues about safety and security of personal information. Some like to break into wireless networks in order to get information that may allow an identity to be stolen or to simply drain someone of all of ...]
Wi-Fi network expansion could be a walk in the park
Sun, 03 Aug 2008 23:06:27 GMT
David Hands goes to uptown Normal about an hour or so every weekday to use the Wi-Fi connections at The Coffee Hound or The Coffeehouse and Deli.
Another Great wireless network camera Article
Security Camera Recording Systems - An Introduction to Current Technology
In this day and age, most people are very familiar with Video Surveillance systems. From small two and four camera systems used to monitor homes and convenience stores to gigantic systems with hundreds and perhaps thousands of cameras, the use of video surveillance is increasing daily. Some studies have shown that an average person will be recorded on a video surveillance system at least four times every day.
So you want to install your own Video Surveillance System? Ten years ago, I would have never supported the idea, but recent innovations in Video Surveillance Technology have made it relatively easy to install your own surveillance system. The first step is to understand the different technologies available for recording video.
The effectiveness of your Video Surveillance system is based around one thing, the quality of the recorded images. There are currently three types of head end recording solutions currently being offered in the video surveillance market. They are the Analog/Time Lapse Recorder (VCR) Systems, the Digital Hard Drive Recording Systems which operate like a VCR but utilize hard-drives to store video and the top of the line PC Based Digital Video Recording Systems or DVR?s.
The use of Time Lapse Video Tape Recorders in the video surveillance industry started a little over 25 years ago. The first systems required a Video Recorder and a monitor for every camera. Innovations in the industry included the video multiplexer and splitters that allowed multiple cameras to be viewed and recorded on a single video tape. Until 4 or 5 years ago, this technology was still the most prevalent form of recording video.
A Time Lapse Recorder has a single video input that allows you to record the incoming video signal. A standard VCR records and plays back video at about 30 frames per second, which on a standard T-160 video tape allows you to record 2-hours of video. A time lapse video recorder slows down the rate at which the images are recorded. Some Recorders allow you to extend the recording up to 960 hours onto a single video tape.
Be aware that when you are recording 960 hours on one VCR tape you are only recording 1 frame or picture every 9 seconds. When programming a time lapse recorder I strongly recommend you do not set the recording duration for more than 3 days or 72 hours. This setting allows you to record over a weekend without changing the tape. Three days of recording on one tape records 1.5 frames or pictures per second. Not great, but not bad considering this is a 20 year old technology.
This works O.K. for a single camera system. Let?s say for example you need 4, 8 or even 16 cameras to watch your property. You could either purchase a monitor and a time lapse recorder for each camera, or you can add a video multiplexer.
A video multiplexer allows you to view and record multiple cameras on a single time lapse recorder and video monitor. Multiplexers are offered in color or black & white in 4, 9 or 16 camera configurations. A video multiplexer works by digitally separating the incoming video signals and dividing them out, one at a time, to a time lapse recorder. It sends the image from camera 1 to frame 1, camera 2 to frame 2, camera 3 to frame 3 and so on. An added benefit of multiplexers is the ability to view multiple cameras simultaneously on a single CCTV Monitor.
A major drawback is that during the digitizing of the incoming video signals, about ? of the information contained in the image is lost. Also remember that you are now limiting the total number of images per second for any given number of cameras. With 16 cameras recording on a single video tape for 72 hours, you are now getting about 1 frame of video from each camera about every 3 seconds.
If a video is recorded on a time lapse recorder through a multiplexer, you must use a time lapse recorder and a multiplexer for playback. A standard VCR cannot process the digital multiplexing encoded in the time lapse format and will not provide a useful playback.
With the advent of the digital age, manufacturers soon devised a way to combine the best features of the Time Lapse Recorder and the Video Multiplexer into a single system that utilizes hard drives rather than VCR tapes to store the recorded images.
Hardware based digital video recorders operate much like a VCR, complete with shuttle and jog controls. Most will utilize some type of traditional CCTV or SVGA Video monitor to view the video.
These units are built from the ground up to perform one specific function, record video. While they do operate some software internally, the video processing is hardware based. It is this hardware which provides the live viewing and high resolution recording. Many of these systems can record high resolution video from 16 or more cameras at up to 160 images per second.
No more VCR tapes are required as all of the video is recorded onto hard drives. How long the video can be stored is merely a function of the total images per second being recorded, the size of the image files and the total size of the installed hard drive(s).
In addition, these recorders utilize a process called first-in first-out to process video (FIFO). They will record video until the designated amount of disk space has been used. Then the system will delete the oldest clips and record the new video. This provides a continuous loop of recordings at anytime.
Some other interesting benefits of digitally processing the video are features such as motion or event based recording options and advanced playback capabilities. In the old days of VCR?s & Multiplexers, it could literally take many hours to try and find an event that occurred overnight. Now, the advanced digital search functions allow you to find archived video in seconds, not hours.
A PC based DVR is comprised of a computer, video capture cards and a software package that allows full motion video to be recorded and played back on a standard personal computer. Due to their superior processing speeds, some of these 16 camera systems are capable of recording up to 480 images per second, which equates to 30 images per second, or real time video for every camera connected to the system.
Many people consider the PC based Digital Video Recorders to be much easier to use and more flexible than the Digital Hard Drive Recorders, and they offer selectable recording resolution that is up to 4 times greater than the resolution of the old Time Lapse Recorders.
PC based DVR's are programmed and operated with a keyboard and mouse. The video is recorded to the computers hard drive in a compressed format. This compression allows a huge amount of video to be stored. On average, a four camera system recording continuously will record about 30 days of video on one single 80 gig hard drive. To double the recording days simply add another 80 gig hard drive.
PC based DVR?s are designed so they do not require any scheduled actions or maintenance to provide uninterrupted video recordings. Recorded video is played back on the computer monitor and it can be printed, saved to a floppy disk or burned to a CD. These systems allow you to view and playback any combination of cameras without interrupting the systems recording process.
A very popular feature of the PC Based Digital Video Recorders is that most of them support remote viewing from any PC that is properly equipped by using Windows Media Player or other remote viewing software. This can allow you to check on your home or office from a remote location via the internet.
Which system is right for you? The final choice might come down to budget, or custom features that you can?t live without, but whether you choose a tried and true Time Lapse Recorder, or opt for a state of the art Digital Video Recorder, you are sure to improve the safety and security of your home or office by installing a Video Surveillance System.
Roy Stephenson has many years of experience designing and installing high end Integrated Security Systems. He is currently the VP of Marketing at http://www.Security-Kits.Com |
Recommended wireless network camera Items
Fenix L2D-CE (Cree Edition LED) Digital LED Flashlight (6 Output levels) - 135 Lumens; uses 2 x AA batteries
Fenix L2D-CE (Cree Edition LED) Digital LED Flashlight (6 Output levels) - 135 Lumens; uses 2 x AA batteries
The Fenix L2D-CE - the mini flashlight with brilliant brightness. The L2D-CE is brighter than a 5W Surefire L2 on high, and is brighter than a Streamlight Stinger, too. These new Cree LEDs are amazing. The flashlight with a digital circuit with 2 output modes and 6 output levels can be easily and conveniently slipped in your pocket/Belt holster. The Maximum output is 135 Lumens and it lasts 2.4 hours with 2 AA alkaline batteries (batteries not included). At the lowest mode, it is 9 lumens at 55 hours. There are two modes of outputs - selected by turning the bezel (patented). The brightness can be adjusted by lightly pressing the tail switch. With the characteristic inbuilt current regulation circuit and stable high brightness, the Fenix L2D-CE is able to meet all your lighting needs whether you're a police officer, outdoor enthusiast or a person who appreciates a quality flashlight.
Circuit Digitally Regulated for Constant Brightness. New ability to aid in an emergency. Super High brightness, Long Runtime, Compact size. Push button tail cap switch. Input voltage: 1.5V~4V;
5.85 inch(L) x 0.83 inch(Dia). 56-gram (excluding batteries);
Available Color: Black only
(batteries not included)
Customer Review: Surprisingly bright, good strong beam, but beware battery use
I've used a handful of different LED flashlights for my job (appliance repair) and this is easily the most powerful so far. It uses AA batteries so you can pick some up just about anywhere - which is good, because it eats through batteries pretty fast. I use the light daily, and during one particularly busy work week I had to replace the batteries twice (as opposed to replacing batteries perhaps once or twice a month with other lights, but then they were nowhere near as bright).
I've tried different types of batteries but have seen no appreciable difference in how long they last. Also, when the flashlight is left on for long periods of time, it does get quite warm to the touch. Nevertheless, I like this light and the ability to select the level of brightness is a useful feature. I bought one for a coworker and he likes it too, but also noticed that it needs batteries frequently.
If you will be using it occasionally or don't mind the expense of batteries this is a pretty slick little flashlight.
Customer Review: Nothing Comes Close - Simply The Best
So bright you cannot look at the beam, 2x AA battery and runs at full power longer than any other light I have used. I have both the L2D & L1D. Keep one at work, home, and in each glove box.
These lights are absolutely worth every cent. You will not be disapointed, better than Surefire and use off the shelf battery to boot.
I have had several months of daily use with no issues.
Canon SD500 Digital Camera Accessory Bundle
Canon SD500 Digital Camera Accessory Bundle
SanDisk SDCFH-004G-A11 4GB/15MB Ultra II CF Card ( US Retail Package )
SanDisk SDCFH-004G-A11 4GB/15MB Ultra II CF Card ( US Retail Package )
Delivers high performance you can trust with your precious memories / Fast 15 MB/sec Read/Write speeds / Higher capacity for capturing photos and video
Customer Review: COMPACT FLASH CARD
This product works extremely well. And compared to my Extreme III, I didn't notice any differance on Burst mode "Large".
On RAW + Large, there was very little of a differance.
Great Product.
Customer Review: Do you know how many pics this card
holds? A HUGE amount. Get it. It's a great price. I've never had a problem with these cards.
Canon Digital Elph Accessory Kit for Canon SD950 IS, SD900, SD870 IS & SD850 IS Digital Cameras
Canon Digital Elph Accessory Kit for Canon SD950 IS, SD900, SD870 IS & SD850 IS Digital Cameras
designed for use with Canon PowerShot SD700 IS * genuine leather carrying case (PSC-55) * leather hand strap * NB-5L lithium ion rechargeable battery * plastic-coated braided metal neck strap *
Customer Review: Except the battery, nothing I can use.
I bought this pack mainly for the battery since it is only a couple dollars more and I'm getting a leather case as well which I might be able to use.
However, the only thing I can use from this pack is the battery. The metal neck strap will eventually scratch the camera if I use it since it is METAL! Plus I've never seen anyone hanging their camera in this size on their neck and have it bouncing on your chest when you walk.
With the case, it doesn't fit my Canon SD870 in their. It is just way too tight. When I pull out the camera, either I have to pull the attached strap so hard that I'm afraid it will break, or if I grab the camera, my thumb will pull and break the battery compartment door.
I would recommend either PSC-50 or PSC-90. Try it at your local store to see which one fit the best of your camera and order it online for a cheaper price.
Customer Review: Canon leather case + battery kit
You never know when your battery is going to die...and it may happen when you really need it! Furthermore the quality/price ratio is extremely interesting. I'd strongly reccomend to buy this kit.
News about wireless network camera
HP 3G Smartphone Delivers Productivity On the Go - RedOrbit
Sun, 03 Aug 2008 11:35:24 GMT
HP 3G Smartphone Delivers Productivity On the Go RedOrbit, TX - Wireless transmission speeds may vary based upon network capabilities and other conditions. Establishment and continuation of a wireless connection depends ... |
Wireless Network Security
Thu, 24 Jul 2008 10:51:38 -0700
It seems that everything is going wireless these days. Though this is very convenient, it does bring up some issues about safety and security of personal information. Some like to break into wireless networks in order to get information that may allow an identity to be stolen or to simply drain someone of all of ...]
Wi-Fi network expansion could be a walk in the park
Sun, 03 Aug 2008 23:06:27 GMT
David Hands goes to uptown Normal about an hour or so every weekday to use the Wi-Fi connections at The Coffee Hound or The Coffeehouse and Deli.
posted by Matt Jones @
11:30 PM
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