Canon S230 manual Block diagram, VGA-size movies that achieve higher picture quality

DIGIC

(Digital Imaging

Processor)

Flash

PROM

CF

Card

2-3 High Image Quality

-1/2.7-inch CCD with approximately 3.2 million camera effective pixels (total of about 3.3 million pixels)

The IXY DIGITAL 320 is equipped with a newly developed 1/2.7-inch 3.3 million pixel CCD (about 3.2 million camera effective pixels). The pixel pitch of this CCD is 2.575mm by 2.575mm, achieving a huge 39 percent size reduction in the area ratio of the chip when compared to conventional 1/1.8-inch three-megapixel-class CCDs (found on the PowerShot G1/S30). Because of this, it is possible to appropriate the optical system and body of the previous IXY DIGITAL 200a, resulting in an ultra-compact three-megapixel-class digital camera.

- High definition and fast processing with the newly developed “DIGIC (Digital Imaging Processor)”

The IXY DIGITAL 320 comes equipped with the “DIGIC (Digital Imaging Processor)”, a newly developed image processor. DIGIC (Digital Imaging Processor) achieves enhanced high picture quality by improving signal processing algorithms as the

successor of prior processor.

The following* are the main advances

of the DIGIC (Digital Imaging Processor).

•Improved picture quality

•Improved AF accuracy

•Improved processing speed

Lens/CCD

USB

CPU AUDIO VIDEO

*The DIGIC (Digital Imaging Processor) features many improvements, but the three

points above are the principle contributions to the Ixy digital 320.

SDRAM LCD

Figure 2–5 Block diagram

- VGA-size movies that achieve higher picture quality

The new 3-megapixel CCD of the IXY DIGITAL 320 can read 1 line of every 3 lines in the lengthwise direction due to a change in the electrode structure (charge reading method). Because of this innovation, a moving image with 524 lines per frame can be created resulting in a huge step forward in quality in comparison to VGA-size movies of previous models (pixel interpolation* types).

However, with the increase in the number of CCD pixels, the frame rate is reduced to 15 frames per second from the IXY DIGITAL 200a’s 20 frames per second.

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