LC9947G 데이터 시트보기 (PDF) - SANYO -> Panasonic

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LC9947G

1/5-Inch Optical Size EIA Black-and-White Solid-State Imaging Device

SANYO -> Panasonic 

LC9947G

5. Dark signal

Block all light falling on the imaging element surface and measure the CCD output signal from the center of the

image. At this time, do not take the difference between the signal level and the optical black segment level, but rather

take the difference with the no signal level that has no pixel information. See Figure 5.

Optical black segment

Valid pixel segment

Optical black

segment

No signal

segment

Fig. 5 Structure of the 1H Period

CCD B&W Camera Block Diagram

CCD

LC9947G

(EIA)

Block Descriptions

OSC

Timing pulse generator IC

Driver IC

Level shifting circuit

Signal processing IC

NSUB driver

Imaging segment

transfer pulse

Level

shifting

circuit

Vertical driver

IC

LC89901V

Storage segment transfer pulse

Timing

IC

LC99012A

or

LC99012A-S

Integrator

Level

shifting

circuit

Horizontal segment transfer driver

Reset pulse

Signal processing

IC

LA7265W

Iris intensity

signal

Video output

Fig. 6 CCD B&W Camera Block Diagram

Generates the basic frequency (28.636 MHz) for synchronization signals and timing pulses

Generates the pulses required for the video signal (SYNC, blanking, etc.) and the pulses required for driving

the CCD. This IC includes a built-in CCD horizontal driver and provides an electronic iris function.

Amplifies the pulses described above to their prescribed levels and drives the CCD device.

Drive pulse level shifter

Video signal processing, including sample and hold, clamping, AGC, gamma correction, white clipping, and

pedestal addition.

No. 4971-7/9

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