Basically, all digitally operative
mechanisms function on the basic premise of the
ability to: Convert the conventional analog
information into digital information. This
basically implies converting the information
represented by a fluctuating wave into
information represented by ones and zeros, or
bits. This entire technology has actually
altered the way audio and visual information is
handled and has taken the of the following:
• Compact Discs – CDs
• Digital Video Discs – DVDs
• HDTV
• MP3s
• Digital Video Recorders - DVRs
• Digital cameras
• cctv digital video security cameras (These are
being used in a large number of commercial
places to prevent shop-lifting, as well as in
companies where data theft is on the rise and
close monitoring of staff is required)
One of the major advancements in technology is
the digital camera. While the original film
cameras depended on chemical and mechanical
process, the digital ones have a built-in
computer. And this cameras record the images
electronically.
How do digital cameras work? This is one
question that leaves many stunned by the
technological advancements of this gadget. At
the base the digital camera records the picture
and stores it in the form of bits and bytes.
Hence, the digital image produced is a strong of
1s and 0s, which represent the tiny colored
dots, also known as pixels.
Operating the digital camera is like operating
any of the conventional photographing gadgets.
Like the conventional counterparts, the digital
gadget has a a series of lenses, which focus
light in order to create an image of the scene.
However, instead of focusing this light onto a
film, it is focused onto a semiconductor device.
This device records the light entering
electronically. The computer installed inside
breaks the electronic information down into what
is known as digital data.
Most digital cameras have an image sensor, which
is a charge coupled device (CCD). However, there
are some cameras that use a complementary metal
oxide semiconductor (CMOS) technology as an
alternative device. It should be noted that both
CCD and CMOS image sensors bring about
conversion of light into electrons. Once this
conversion takes place the accumulated charge
value is read. |
