Japan's NHK-STRL New Technology

Take a look on Japan's NHK Science & Technical Research Laboratories new Technology that they are developing. Here is the URL;

http://www.nhk.or.jp/strl/publica/rd/rd110/rd110.html

Some facts about CCD and CMOS image sensors in a digital camera

• CCD sensors, create high-quality, low-noise images. CMOS sensors, traditionally, are more susceptible to noise.
• Because each pixel on a CMOS sensor has several transistors located next to it, the light sensitivity of a CMOS chip tends to be lower. Many of the photons hitting the chip hit the transistors instead of the photodiode.
• CMOS traditionally consumes little power. Implementing a sensor in CMOS yields a low-power sensor.
• CCDs use a process that consumes lots of power. CCDs consume as much as 100 times more power than an equivalent CMOS sensor.
• CMOS chips can be fabricated on just about any standard silicon production line, so they tend to be extremely inexpensive compared to CCD sensors.
• CCD sensors have been mass produced for a longer period of time, so they are more mature. They tend to have higher quality and more pixels.

Computer Memory

Computer memory refers to any recording media that retains electronic data used for computing. Memory can be clasiffied into the following:

1. Temporary or primary - inludes the RAM
2. Permanent or secondary - includes the hard disk, ROM/BIOS, optical and magnetic drives
3. Off-line or tertiary - includes memory media like USB memory, memory sticks,
CompactFlash, SmartMedia, etc.

A better understanding of Interlace

This animation demonstrates the interline twitter effect. The two interlaced images use half the bandwidth of the progressive one. The interlaced scan (second from left) precisely duplicates the pixels of the progressive image (far left), but interlace causes details to twitter. Real interlaced video blurs such details to prevent twitter, as seen in the third image from the left, but such softening (or anti-aliasing) comes at the cost of resolution. A line doubler could never restore the third image to the full resolution of the progressive image.

Note – Because the frame rate has been slowed down, you will notice additional flicker in simulated interlaced portions of this image.

The Ultimate Guide to Anamorphic

http://tinyurl.com/9968

Anamorphic widescreen DVD is all about giving you the most lines of picture resolution (and thus quality), while still allowing you to watch widescreen movies as they were meant to be seen.












Non-anamorphic video as it appears on a Digital 16x9 TV. The gray bars are generated by the TV to fill in the unused portions of the screen. Using the TV's "zoom" mode, you can magnify the image to fill the screen electronically, but at the cost of degrading the image quality significantly.












Anamorphic video as it appears on a Digital 16x9 TV. The "squished" image recorded on the disc (seen at top) is sent directly to the TV, which stretches the video signal horizontally until the correct aspect ratio is achieved. As you can see, the image fills the frame, while retaining its full vertical resolution. The picture quality is stunning.

In essence, as I understand, (I could be wrong, you know), anamorphic is done for the purpose of preserving the whole image as it was produced so that it can be viewed in all kinds of aspect ratios.

For a detailed article on this pls click the tinyurl link.

Cheers,
t2riki

Digital TV Standards Comparison

Please click on table to view larger image.

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