Scitech’s Weblog

Providing the Information for the TECHNOLOGY Industry

The Camera and the Influence of Digital Technology

Posted by scitech11 on March 28, 2008

In the study of the camera, digital technology influence comes from a variety of different sources to give rise to modern digital photographic capabilities. Some of these technologies are then advanced in special niches to create new advances in science. One of the best examples of this exchange of digital technology is the CCD or Charge-coupled device. This is the digital technology breakthrough that made the digital camera possible.

When light strikes the CCD surface, it frees electrons to move around and those electrons accumulate in capacitors. Those electrons are “counted” at regular intervals by a circuit which dumps the electrons from each point on the CCD surface. When all of these measurements are combined, a picture can be instantly reproduced as a “virtual mosaic” of the individual point measurements. This is the picture we see. The more points of measurement found on the CCD, the higher the “resolution” of the resulting picture.

When building a highly specialized camera, digital technology such as this opens new doors which are not possible with film based technology.

In dentistry, an X-ray machine can be converted to a digital camera with a CCD which is sensitive to the photons that make up the X-ray spectrum. Instead of imprinting an image of X-ray on film, developing the film and finally reviewing the tiny film image, modern X-ray cameras can instantly display an X-ray image on a computer screen as the CCD processes the array of photon measurements. This not only saves time, but also produces no waste in the form of exposed film and development chemicals. So with this frequently used, specialized camera, digital technology creates improvements in a dentist’s practice and protects the environment.

Another specialized camera that benefits from digital technology is the telescope. Traditional cameras, mounted to telescopes collect points of light and expose the film. This can provide more sensitivity than the human eye to faint points of light, but brighter points of light can also obscure fainter ones by “washing out” the image. With the application of digital technology the film camera is replaced by a digital camera using a CCD. The CCD can continue to receive and measure photons indefinitely. This means the process is a continuous measurement in contrast to the more simple exposure of a piece of film. Computers can then electronically filter out brighter sources of light making possible the detection of very faint points of light in the sky and even the study of celestial objects by the detection of the shadows they cast instead of the light they give off. By comparing the light collected over time, digital technology also allows this digital camera to detect distant objects by inferring their presence.

These are just two examples of how cameras are influenced by digital technology. New applications and even new science can result from such seemingly small advances in technologies that don’t seem to be related at all. Think on this the next time you examine your own digital camera.

Source: Free Articles


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Toshiba 815T PB

Posted by scitech11 on March 19, 2008

What you see is what you get. Apparently, these Toshiba 815T PB phones have come in contact with the Allspark Cube from the Transformers movie and now have bodies of their own. Now all they need are guns and missiles like that one crazy Nokia phone.

Apparently, this is all part of promo for a new show called Ketai Sousakan 7. To be honest, I don’t know how anyone could make a show about transforming cell phones, but how can you not, really? Especially ones with faces like those. I wonder what the plot will be about. Maybe it’s about cell phones that want to be human. Very silly, really.

By the way, these Toshiba 815T PB phones are fully functional as they are 3G network enabled, and come with a 3.2 megapixel camera.

All right, those are the facts. Now here comes the part where I make fun of this concept. This time, it is just too easy. Do we need phones that can transform, even if their limbs did work? If so, they had better have more of an Autobot rather than Decepticon streak.

So far, there is no set availability date but sometime in April. There is also no set price, and it is predicted that this will only be in Japan.


February 27th, 2008 by Mark R in Coolest Mobile News, Robot Gadgets

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