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LC82104 Schematic ( PDF Datasheet ) - Sanyo Semicon Device

Teilenummer LC82104
Beschreibung Color Image Processing IC for Fax and Scanner Applications
Hersteller Sanyo Semicon Device
Logo Sanyo Semicon Device Logo 




Gesamt 6 Seiten
LC82104 Datasheet, Funktion
Ordering number : EN*5685
Preliminary
COMS IC
LC82104
Color Image Processing IC for Fax
and Scanner Applications
Overview
The LC82104 converts analog image signals from a CCD
and contact image sensor to precise multi-valued image
data using a built-in 8-bit A/D converter and internal
image-processing functions. The LC82104 includes a 6-bit
reference potential setting D/A converter for the 8-bit A/D
converter and CDS function, and produces high-quality
multi-valued data by performing shading correction for all
pixels, color balance adjustment, and gamma conversion
with support for arbitrary gamma curves. It also includes a
multi-value data resolution conversion function, and thus
can support input from and output to systems with
different resolutions. Furthermore, it can perform high-
quality conversion to two-valued images from the green
signal. The LC82104 can process up to 5400 pixels by
three lines and requires no external memory whatsoever
for use in distortion correction and other processing. Thus
this IC can implement the image processing required for
color scanners, FAX, copiers, OCRs and similar
applications.
Features
• Number of pixels processed:
2700 pixels × 3 lines
(Both bright and dark correction applied to all pixels)
5400 pixels × 3 lines
(Only bright correction applied to all pixels)
• Processing speed:
1,200 ns/pixel maximum (3-color CCD) (When CLKIN
is 20 MHz)
400 ns/pixel maximum (CIS and black-and-white CCD)
(When CLKIN is 20 MHz)
• 8-bit A/D converter
(Includes a sensor signal timing adjustment function.)
• 6-bit D/A converter for setting the A/D converter
reference potential
• Sensor drive circuit
(Supports all types of CCD and CIS sensors)
• Digital CDS (Correlated double sampling)
• Digital clamp circuit
(Single-point clamping, even field clamping)
• Shading correction
(Bright correction: all-pixel correction, dark correction:
either all-pixel correction or set dark correction
attenuation data)
• Gamma correction
(Supports user-defined curves for each of R, G, and B
using 8-bit data)
• Color balance (Gain control)
• Main scan direction multi-value resolution conversion
(From 2/1 to 1/2, in units of 1/256)
• Binary coding
(Simple binary coding (slicing), and 64-level error
diffusion)
*: The green signal is converted to a binary signal.
• Memory manager
(Image data buffer memory controller)
• Fabricated in a CMOS process for 5-V single-voltage
power supply operation.
Package Dimensions
unit: mm
3181B-SQFP100
[LC82104]
SANYO: SQFP100
SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN
30698RM(OT) No. 5685-1/6






LC82104 Datasheet, Funktion
LC82104
s No products described or contained herein are intended for use in surgical implants, life-support systems, aerospace
equipment, nuclear power control systems, vehicles, disaster/crime-prevention equipment and the like, the failure of
which may directly or indirectly cause injury, death or property loss.
s Anyone purchasing any products described or contained herein for an above-mentioned use shall:
ΠAccept full responsibility and indemnify and defend SANYO ELECTRIC CO., LTD., its affiliates, subsidiaries and
distributors and all their officers and employees, jointly and severally, against any and all claims and litigation and all
damages, cost and expenses associated with such use:
 Not impose any responsibility for any fault or negligence which may be cited in any such claim or litigation on
SANYO ELECTRIC CO., LTD., its affiliates, subsidiaries and distributors or any of their officers and employees
jointly or severally.
s Information (including circuit diagrams and circuit parameters) herein is for example only; it is not guaranteed for
volume production. SANYO believes information herein is accurate and reliable, but no guarantees are made or implied
regarding its use or any infringements of intellectual property rights or other rights of third parties.
This catalog provides information as of March, 1998. Specifications and information herein are subject to
change without notice.
PS No. 5685-6/6

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SeitenGesamt 6 Seiten
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