CXD3511Q データシートの表示（PDF） - Sony Semiconductor

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CXD3511Q

Digital Signal Driver/Timing Generator

Sony Semiconductor 

CXD3511Q

(e) User bright block

This block performs addition and subtraction processing as the user control bright adjustment. The settings are

as follows.

Coefficient: 11 bits with code, MSB = code bit

Bright setting: –1024 to +1023 scales, variable with an accuracy of 1 bit

(Settings shared by R, G and B)

Multiplication is performed using the 10-bit input and an 11-bit coefficient with code. The coefficient MSB is the

code bit. Addition is performed when b[10] = 0, and subtraction when b[10] = 1. However, when performing

subtraction, set the two's complement in the lower bits of the coefficient. When the operation results overflow

or underflow, clipping is performed.

Coefficient 11

b[10:0]

Input 10

a[9:0]

Addition/subtraction 10

and

clipping

Output

(f) Sub gain block

This block performs multiplication processing as the white balance gain adjustment. The settings are as follows.

Coefficient: 8 bits

Gain setting: 0 to 3.984375 (255/64) times, variable in 256 steps

(Set independently for R, G and B)

Multiplication is performed using the 10-bit input and an 8-bit coefficient, and the upper 13 bits c[17:5] of the

operation results are output. Next, the c[5] value is checked and rounding is performed to 12 bits. The upper 2

bits of the rounded 12 bits is checked, clipping is performed, and the lower 10 bits are output.

Coefficient 8

b[7:0]

Input 10

a[9:0]

a×b

13

c[17:5]

Rounding

and

clipping

10

Output

(g) Sub bright block

This block performs addition and subtraction processing as the white balance bright adjustment. The settings

are as follows.

Coefficient: 11 bits with code, MSB = code bit

Bright setting: –1024 to +1023 scales, variable with an accuracy of 1 bit

(Set independently for R, G and B)

Multiplication is performed using the 10-bit input and an 11-bit coefficient with code. The coefficient MSB is the

code bit. Addition is performed when b[10] = 0, and subtraction when b[10] = 1. However, when performing

subtraction, set the two's complement in the lower bits of the coefficient. When the operation results overflow

or underflow, clipping is performed.

Coefficient 11

b[10:0]

Input 10

a[9:0]

Addition/subtraction 10

and

clipping

Output

– 19 –

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