http://www.sony.net/Products/SC-HP/cx_news/vol49/np_icx636_646.html
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`5 captures
`10 Jan 2008 - 25 Jun 2012
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`Go DEC JAN AUG
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`2007 2008 2009
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`HOME > CX-NEWS > Back Number > CX-NEWS Vol.49> New Products
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`New Product_image
`
` 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
`ICX612CQZ
`
`In the compact consumer digital still camera market, in addition to the
`earlier desire for higher pixel counts, there are increasing needs for
`improved high ISO sensitivity and lower power.
`By taking advantage of Sony’s unique fine pixel fabrication
`technologies, by optimizing circuit designs, and by other efforts, Sony
`has now developed the ICX636/646 Series of 1.75 μm unit pixel CCDs
`which achieve the industry’s smallest pixel size while maintaining high
`picture quality. Sony has also developed at the same time the
`ICX612CQZ, which achieves a recorded pixel count of 12M pixels in
`compact consumer digital still cameras.
`Additionally, both the ICX636 Series and the ICX612CQZ achieve lower
`power consumption through the adoption of new drive methods.
`
` 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).
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`APPL-1031 / Page 1 of 2
`APPLE INC. v. COREPHOTONICS LTD.
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`These technologies allowed Sony to achieve equivalent levels of sensitivity,
`Go DEC JAN AUG
`http://www.sony.net/Products/SC-HP/cx_news/vol49/np_icx636_646.html
`10
`saturation signal level, and smear characteristics as the existing ICX629 despite the
`5 captures
`reduced pixel size.
` Low Power Consumption
`2007 2008 2009
`10 Jan 2008 - 25 Jun 2012
`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.
`
`Face
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`•••• Mr. SHIRAISHI ••••
`The members of our group are unanimous in our conviction that we
`have achieved the industry’s highest picture quality. We also worked
`both to improve the frame rate and to lower power consumption,
`which are two critical issues for CCD products, and we also
`established a new CCD drive technique.
`I strongly hope that you will take advantage of the industry-leading
`ICX636/646 Series and ICX612CQZ CCD products.
`
`See all articles with figures and tables.
`
` Vol.49
`
`[ Back ]
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