In recent years, a large majority of success in the electronics business is part of a technological breakthrough that has shown a revolution in global markets of the audiovisual sector. If you think about it, CDs, DVDs, MP3 players, digital video recorders, etc. are built around the same basic process: converting conventional analog information (represented as a fluctuating wave) into digital information (represented by zeros and ones, or bits). The foundation of modern technology has completely changed the way we handle visual and audio information – completely redefines what is possible with this type of data.
The digital camera is one of the most notable of these changes faster than its predecessor, the difference is huge. Conventional cameras depend entirely on chemical and mechanical processes – do not even need to use electricity. On the other hand, digital cameras have a “computer” inside, so it captures images electronically.
This approach has been a resounding success. Offer the “film” traditional continues to improve image quality; digital cameras have not completely replaced conventional cameras. But after developing the imaging technology, digital cameras are becoming more popular, and it is assumed that at some point, be of similar or superior to its predecessor.
Understanding the basics
Suppose you want a picture and send it by e-mail to a friend. You must be the image shown in the language that computers recognize – bits and bytes. In essence, a digital image is just a long series of zeros and ones as the color dots on the screen, called pixels, to form the image.
If you look at an image of this form, you have two options:
* You can make an image chemically with a conventional camera, process film, print on photo paper, then use a digital scanner to save the photo.
* You can directly capture the light bounces original photograph the object, instantly transforming the form of light in a series of numerical values – in other words, you can use a digital camera.
At the lowest level, which is everything a digital camera? Like a conventional camera, a number of lenses, light in a sequence should focus we see. But instead of light on a piece of film making a semiconductor device those records light electronically. In other words, a digital camera with a sensor, light is converted into electric charges. The image sensor is used in many of these rooms as a CCD (Charge Coupled Device). Other cameras use technology instead of CMOS (Complementary Metal Oxide Semiconductor), although the two methods of converting light into electrons.
A very simple way to think about how these sensors is a collection of thousands of millions of tiny solar cells today. Once the sensor converts light into electrons, which reads the value of each cell image (accumulated charge). You can make the difference between the two types of sensors:
- A CCD transports the charge across the chip and the bed in a corner of the training. An ADC or analog-digital converts the value of each pixel of a digital value by measuring the amount of charge on each point, and convert that measurement into a binary form.
- CMOS devices use several transistors at each pixel to amplify and shift the burden, with more traditional forms of wiring. The CMOS signal is digital, so it does not need ADC.
