احتمالا سنسور سی 905 اینه ---محصول جدید سونی 8.1 مگاپیکسل :
High-Resolution Diagonal 7.183 mm (Type 1/2.5) 8.15M-Effective Pixel and Diagonal 9.299 mm (Type 1/1.7) 12.19M-Effective Pixel Color CCDs for Consumer Digital Still Cameras Support VGA Resolution Moving Picture Imaging

ICX636/646 Series
. . * Diagonal 7.183 mm (Type 1/2.5) 8.15M effective pixels
* Pixel size: 1.75 μm unit pixel
* Five-field readout
* Horizontal divided into thirds output
* Horizontal 3-phase drive
(The ICX646 Series devices use horizontal 2-phase drive)
ICX612CQZ
. . * Diagonal 9.299 mm (Type 1/1.7) 12.19M effective pixels
* Pixel size: 1.85 μm unit pixel
* Six-field readout
* Horizontal divided into thirds output
* Horizontal 3-phase drive
CCD with a 1.75 μm Unit Pixels, the Industry’s Smallest
Sony has now released the ICX636/646 Series, which feature a 1.75 μm unit pixels, the industry’s smallest. To achieve at the same time superb performance in the sensitivity characteristics, the saturation signal level, and the smear characteristics, Sony switched to a finer feature size in the vertical transfer registers and optimized the aperture area. Sony increased the aperture ratio per unit pixel by 9% from the existing ICX629 (see CX-NEWS Vol. 45).
These technologies allowed Sony to achieve equivalent levels of sensitivity, saturation signal level, and smear characteristics as the existing ICX629 despite the reduced pixel size.
Low Power Consumption
Sony achieved a 57% reduction in the horizontal transfer register power consumption compared to the existing Sony ICX629 by developing and adopting two new drive methods.
Load Reduction of 50% Due to Horizontal Divided into Thirds Output Method
In earlier methods, a single signal line was transferred to the horizontal transfer register at the same time. In the divided into thirds output method newly developed for this product, a single unit consists of three pixels and a single signal line is divided into lines consisting of every three pixels for transfer to the horizontal transfer register. (See figure 1.) By adopting this structure, Sony was able to radically reduce the number of electrodes and reduce the capacitance between clocks by 50%.
Also, by increasing the area per single electrode, Sony achieved a charge amount handled by the horizontal transfer register about three times larger than that of earlier technologies. Additionally, in moving picture imaging mode, as opposed to the earlier technique in which two pixels were added horizontally, in this new technique, three pixels are added horizontally. This makes it possible to increase the frame rate.
2.3 V Low-Amplitude Drive Horizontal Three-Phase Driver
In the earlier horizontal two-phase drive method, it was necessary to transfer charge while overcoming a potential barrier for preventing color mixing, and a large amplitude was required. In horizontal three-phase drive, since charge is transferred sequentially as shown in figure 2, no potential barrier is required and transfer at low amplitudes becomes possible. By switching from horizontal two-phase drive to horizontal three-phase drive, Sony reduced the required amplitude by about 1 V.
*: The ICX646 Series products use the same horizontal two-phase drive as Sony’s existing ICX629, and are therefore used with the same drive specifications as that existing product.
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