LC99062-W50 Ver la hoja de datos (PDF) - SANYO -> Panasonic

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Fabricante

LC99062-W50

Image Sensor Signal Processing LSI

SANYO -> Panasonic 

LC99062-W50

Main Functions Provided by the LC99062-W50

DSP Functions for Sanyo Color CCD devices (LC9997G/LC9998G)

1. Luminance signal system processing

• Includes a luminance matrix to reduce reflected noise (moire).

• Includes a knee-processing circuit using complementary color filters.

• Includes a seven-tap low-pass filter.

• Gamma correction circuit using a five-line approximation technique. The intersection points for each line can be

adjusted.

• Provides second-order horizontal outline correction. The gain and coring are adjustable.

• Forms a 1.5× sampling frequency conversion circuit.

2. Chrominance system signal processing

• Includes a digital clamping circuit that prevents black balance slippage.

• Forms the RGB signal using an 11-tap low-pass filter and a color calculation matrix.

• Automatic white balance circuit

— Includes all circuits and functions required for automatic white balance.

— Allows switching between automatic and manual modes.

— Allows holding from automatic mode.

— Supports fine-grained gain settings using 7-bit gain data and a technique that takes valid bits into account. The

R gain can be set from ×0.25 to ×4.0, and the B gain from ×0.5 to ×8.0.

— Provides modes with seven patterns, including flesh correction.

— Reduces incorrect operation by applying a response with hysteresis according to the degree of the discrepancy.

• Gamma correction circuit using a three-line approximation technique

• Includes a linear matrix for color difference signals. Allows color tone adjustment.

• Includes a color noise suppression circuit that operates for low chrominance level signals. The suppression level is

adjustable.

• Includes a suppression circuit for false color signals that occur at edges and in high-luminance areas.

• All of the above functions are formed with baseband signals.

• Includes a 1.5x sampling frequency conversion circuit.

NTSC/PAL Encoder

• NTSC and PAL encoding is possible with only HD, VD, and CLK inputs (NTSC = 14.31818 MHz, PAL =

14.1875 MHz). In PAL mode, internal operations are used to generate the Fsc signal, and normally there is no need

for a Fsc signal generated by a PLL or other circuit.

• The CSYNC, CBLK, and BF signals are formed internally.

• Allows burst phase adjustment (hue adjustment). (NTSC only)

• Allows pedestal and burst level adjustment.

• Includes a seven-tap low-pass filter for the color difference signals relative to the external RGB inputs. The

luminance system 3.58 MHz trap can be turned on or off.

Input and Output Modes

1. Input modes

• In addition to signal input from an LC99052-V64A, the LC99062-W50 also supports <R, G, B> and <Y, R–Y,

B–Y> input modes.

• Two of the above input systems can be superimposed.

2. Output modes

• The LC99062-W50 supports eight output modes.

— Composite video, 8-bit RGB, <Y, R-Y, B-Y>, <Y, C>, <Y, U/V>, and <4-bit Y, 2-bit R-Y, B-Y>

— <Y + CSYNC, C> and <Y/U/V>

No. 5073-6/7

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