Tag: CCD

Given the nature of video these days, it’s no surprise that greater numbers of security cameras and the kits they come with are moving to high definition, just as televisions have been moving to high-definition for several years.

These new security systems like TVs now are able to handle both 720p and 1080i, which is the standard for high-def video.

Basically, “1080” refers to the number of horizontal scan lines that the video device can display.

This is a huge increase from older standard definition video monitors and TVs which could at most, display 420 horizontal scan lines and low refresh rates.

The “I” in the 1080i means “interlaced”. Interlaced is defined as a process where the frames are mixed together to prove a smoother picture and less flicker.

Most security video camera kits are come in either 720p or 1080i. 720P, if not figured out by now, designates 720 horizontal scan lines, while the “p”stands for “progressive.”

It can sometimes mean “non-interlaced.”720p is excellent at eliminating flicker, which is normally a problem when it comes to horizontal scan lines, the lower down the ladder (from 1080 to 720 to 420) one gets.

Because 720 does so well at dampening flicker, the resolution of the picture can actually approach that of 1080i, the true high-definition standard for video (1080p is true high-def for televisions).

This is one reason why security camera manufacturers go with 720p, because it can approach the level of true high-definition yet not cost anywhere near as much.

Environments that call for extreme levels of security can also benefit from security camera systems featuring 720p capabilities.

They have an ability to capture images and then display them that are much more “real time,”meaning the time lag between the image being captured by the camera and translated into signals that can be decoded by the security monitors will be super short.

Keep in mind that both 720p and 1080i systems are priced as high-definition systems, meaning they’ll cost more than older-style standard definition sets.

A standard kit, with four cameras (nicely rigged with CCD cameras (CCD stands for “charge coupled device”) and infrared capability along with a tuned digital video recorder and TV cables is likely to cost twice as much (or even more) than a comparative standard definition system that uses an equal number of cameras.

There are plenty of advantages to a 1080i and 720p digital security camera system, for sure. They can capture and display much higher quality pictures under even no-light conditions (when equipped with infrared) and their ability to “see”and then display detail is truly impressive.

Introduction Cameras are used to capture the lovely moments of your life.Cameras are available in various brands with different models and features and in attractive colours.Panasonic is one such company that manufactures cameras.

Brief Description on Panasonic

Panasonic is a public company that is into the industry of manufacturing of electronics, semiconductors and home appliances.It was established in the year 1918 by its founder Konosuke Matsushita.The headquarters of this company is located in Kadoma, Osaka, Japan.It serves its customers throughout the world. The current chairman of this company is Kunio Nakamura, the vice chairman is Masayuki Matsushita.The President of this company is Kazuhiro Tsuga.The revenue of this company is 7.8 Trillion Yen.There are more than 3000000 working with this company currently.

Panasonic Lumix DMC FH25 Reviews

This model of camera from Panasonic is liked by its customers.It is a 16.1 mega pixel camera that has a CCD image sensor.It has facility of HD recording and has 8x optical zoom and 4x digital zoom.It has a 2.7 inch TFT screen and the focal length is 28 224mm.The dimension of this camera is 99.2*56.5*27.8mm and it weighs about 152 grams.The image display resolution is 230000 dots.The type of sensor is CCD and the size of the sensor is 1 /2.33 inch.It has an auto focus lens and the type of lens is LEICA DC VARIO-ELMAR.It has a primary color filter.The type of battery used is Li ion battery pack. It has a mono microphone and the USB cable used is USB 2.0 high speed.

The audio video interface is AV output.It has an inbuilt memory of 70MB and the type of memory card is SD/ SDHC/ SDXC memory card.The various flash modes in this are auto, auto/red eye reduction, slow sync/ red eye reduction, forced on and forced off.Normally the manufacturer would provide a warranty of 3 years along with this model of camera.The sales package would include battery charger, battery pack, USB cable, AC cable, hand strap and CD ROM.

Panasonic digital camera price list 2012

Panasonic Lumix DMC FH25 Price in India is Rs.9000 making it the most economical camera for the people of our country.

ConclusionThis camera is very famous for its appearance and quality.This model of camera is available in leading electronic showrooms throughout our country and in all the Panasonic showrooms.It can also be easily bought through online shopping. Buy this model of Panasonic camera to enjoy its durability. The easy to use features of this model of camera have made it a favourite camera among its customers.

This writeup is the second in a series depicting how to convert a simple webcam, also known as an IP camera, into a total security and surveillance system. Add lightings, movement detectors, outside enclosures, wireless adapters and other electronic devices to an Internet (IP) camera – and you now have a prestigious, yet cost-effective electronic security guard. Surveillance systems such as these can be ideal for watching over vacation homes and RV’s, distant job locales, faraway businesses, or anything which needs monitoring. First step to achieve this was to connect a PIR sensor to the camera to trigger it to send alerts and to get images or videos of the events which triggered the detector. Next is to attach a floodlight to dissuade would-be wrongdoing or thievery.

Quality Article From: ICS, Provider of Solar Video Portable Camera

A web camera is a video camera which feeds its images in real time to a computer or computer network, via utilizing different transmission devices. Their favorite use is the establishment of video links, granting local or faraway PC’s to act as Digital Video Recorder (DVR), or particularly, Network Video Recorder (NVR) stations. This common use as a camera for the web gives the webcam its nbickname “webcam”. Webcams usually have a lens, photo sensor, and several support devices. Diverse lenses are available, the most common in consumer-grade Internet cameras being a plastic lens that can be jockeyed in and out to set the camera’s default focus. Fixed focus lenses, which have no room for alteration, are also obtainable. As a camera’s astuteness of sphere is broader for little image formats and is grander for lenses having a large f-number (small aperture), the systems used in webcams have sufficiently large deepness of field that the employment of a fixed focus lens does not bear upon image sharpness much. Image detectors can be CCD or CMOS, with CMOS being dominant for affordable cameras, but CCD cameras do not really surpass CMOS-supported cameras in the low-cost price range. Most consumer-type webcams are capable of providing VGA-resolution video at a frame rate of 30 frames per second. Many newer devices can produce video in big pixel resolutions.

Support devices installed within read the photo from the detecting device and convey it to a local host computer via Ethernet cable or other connectivity. If a server is not available, the cameras can be connected to the Internet directly, using the common wireless Internet cards, such as 3G and 4G cards from diverse suppliers. Some more high-end cameras include built-in processors that add multiple features, such as motion sensing transmission, email transmission, scheduled sending of stationary pictures and videos. There are those which can likewise include pictures within emails. Virtually all webcams have built-in microphones.

Connect a powerful floodlight to the web camera. The floodlight can be activated by the PIR sensor. Alternatively, other cameras are already capable of turning on the lights remotely using the remote-viewing application, making them useful for different monitoring functions. Some cameras have the support electronics to turn on lighting to not only illuminate the area under surveillance, but also serve as a thievery determent. Most trespassers like the shadows and will generally take flight when strong lights are turned on in reaction to their movements. One such webcam is available from Offsite Commander Systems.

Quality Article From: ICS, Provider of Solar Powered Security Cameras

By awareness the function of megapixel in a digital camera, you will be able to buy the finest option at the cheapest rate. Even beginners will be able to opt a better camera.

Higher the megapixel count, better is photo-quality?

This is one of the most misunderstood impression about rating of digital camera and their photo excellence. Consider a mosaic of tiles, each megapixel is like a tile and a mosaic of these tiles make a picture clearer. That is all right, but it doesn’t mean that picture taken by a 10 or 12 or 50 megapixel camera will be more sharp than a 3 megapixel camera, because for most practical purposes, 3 megapixel quality is good enough. At the most you may require 6 – 8 megapixel for photo-quality as appears in magazines. Anything ahead of that isn’t of much use to a non-professional photographer.
One megapixel is like one tile. When a picture is taken, the CCD or CMOS sensor in the camera receives an array of such tiles to create an image. It then converts it to electrical signals which are processed to deliver a picture. An array of 2048*1536 generates a pixel count of 31,45,728 pixel which is amount to to 3.1 megapixel.

What affects the quality of pictures then?

The quality of the lens, the algorithms used to make the photo from raw data composed by the sensor and the focusing mechanism are some of the other factors that affect the final result.
It should also be considered, how large is the sensor in the camera. Consumer digital cameras have tiny image sensors. They are measured in microns. A micron is a millionth of a meter. Most sensors in consumer cameras are less than 10 microns. It is kept so so as to decrease the size of the camera so you can carry it in your pocket.

DSLR cameras have larger sensors. The main disadvantages of a smaller sensor is that it generate images with more noise than a large sensor. If you have to focus on a small area, it is difficult to do with a small sensor. Further, any shaking in handling the camera is blown up in a small sensor.

That means in right hand, with a appropriate sized sensor, a 6 MP camera is also good enough. In few scenarios a larger megapixel count may be useful, but for general purposes, it is not required.

In what scenario is a higher megapixel beneficial?

If you have to take the photograph of an airplane or a bird flying at a distance and you starting zooming with a digital camera, use digital zoom to reach it, the picture becomes granular. This is a typical defect of the digital zoom. In such a case, if you have a higher megapixel count, you won’t need the digital zoom.

Buy wisely choosing the appropriate megapixel rating you will be able to get a cheapest yet a better digital camera.

For those really into security systems that can handle serious levels of high technology, going with cameras that can capture an image and turn it into a high-definition display might be the way to go.

Prices of very nice kits have taken a hit recently, thanks to the entry of China wholesale security cameras suppliers. Typically, those kits feature video cameras capable of presenting images in what’s called 720p.

Now, most of what 720p has to do with is the resolution, or quality, of the picture that will be displayed on a monitor capable of converting that signal to high-definition pictures.

“720” stands for the 720 horizontal scan lines of display resolution. The “p” stands for “progressive scan,” though it’s sometimes also meant to mean “non-interlaced.”

Basically, 720p with its progressive scan lines can actually come much closer in terms of resolution to 1080i than most people might believe. It filters out flicker quite well and it’s fairly sharp because it because it works so well at preventing that screen flicker. 1080 is so-called “true” high-definition and the number refers to the number of scan lines (1,080 of them) while the “I” stands for “interlaced.”

“1080i” is the high-definition video mode, while high-def TVs usually feature 1080p, meaning that 1,080 horizontal scan lines are progressively scanned.

Both 720 and 1080 present pictures and displays that are generally superior to regular (or “standard definition”) footage across every measurable criteria.

At any rate, most security professionals rate the ability to deliver displays in high-definition to be a desirable element in any good system.

Keep in mind, though, that a system able to capture and then display images in high-def is going to cost more, sometimes by many hundreds of dollars.

If getting one, make sure all the cameras are either all “I” or all “p,” because the receiving equipment is only set up to handle one or the other.

These systems are considered, at present, to be the “gold standard” for home security kits.

Make sure any set being considered has a well-designed digital video recorder and security cameras that feature CCD (charge coupled devices) cameras that can make use of infra-red so that they can work well under all light conditions.

It’s important that all cameras and equipment be matched up to match the resolution capabilities of the cameras because a 720p and a 1080i set of cameras normally can’t be mixed together without a great deal of difficulty and a lot of adapter-type components.