參數資料
型號: M66335FP
廠商: Mitsubishi Electric Corporation
英文描述: FACSIMILE IMAGE DATA PROCESSOR
中文描述: 傳真寄發(fā)圖像數據處理器
文件頁數: 36/57頁
文件大小: 656K
代理商: M66335FP
MITSUBISHI
DIGITAL ASSP
M66335FP
FACSIMILE IMAGE DATA PROCESSOR
36
Sensor type
CCD sensor
CIS sensor which outputs light voltages
(white voltage) of 3.5V or lower
CIS sensor which outputs light voltages
(white voltage) of 2V or lower
CIS sensor which output shielding pixels for each line
Description of the Operations of the Analog
Circuits
The configuration of the analog processing circuits is shown in
Fig. 17.
(1) Sensor selection circuit
The four types of sensors in the table can be connected to the circuit.
Register 02
H
CCD
CIS1
CIS2
CIS3
<CCD mode>
Max.500mVpp.
White
Signaling element
Blanking element
Black
Shielding pixel part
Effective pixel part
<CIS1 mode>
Signaling element
White Max.3.5V
Black ±200mV
<CIS2 mode>
Signaling element
White Max.2V
Black ±200mV
<CIS3 mode>
Signaling element
Clamping level
White
Black
2Vpp.
Shielding pixel part
Effective pixel part
The amplitudes of sensor signals are multiplied by –4 through the
two operating amplifiers directly after the switch to select the CCD
mode. (The waveforms of the signals are inverted at the same time.)
As a result, the sensor signals input to the sample and hold circuit
have a dark voltage of 2.2V.
The amplitude of signals input from the sensor are halved. Then,
their reference potential is shifted up to 2.2V.
As a result, the sensor signals input to the sample and hold circuit
have a dark voltage of 2.2V.
The reference potential of signals input from the sensor is shifted up
to 2.2V.
As a result, the sensor signals input to the sample and hold circuit
have a dark voltage of 2.2V.
Sensor signals with a dark voltage of 2.2V clamped by line clamping
input are directly input to the sample and hold circuit.
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