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CSG14K_CSG8K

Functional Description

Datasheet

• PUBLIC

DS000571

• v2-01 • 2023-Feb-10

113

│ 91

The digital gain is applied after the black level correction. This means that changing the digital

gain setting does not require any of the offset correction settings to be updated.

7.7.3

Compression

Figure 115:

Compression Registers

Bank

Addr

Bits

Description

COMPRESS_EN

[0:0]

0: Disable digital compression

1: Enable digital compression

COMPRESS_KNEEPOINT

[12:0]

Threshold above which data is

compressed

COMPRESS_RATIO

[1:0]

Compression number

0: Ratio 2

1: Ratio 4

2: Ratio 8

3: Ratio 16

OUTP_BITMODE

[1:0]

Pixel data width of the output channels

0: Unused

1: 10-bit data

2: 12-bit data

The sensor can digitally compress the output pixel data as shown in the figure below.

Figure 116:

Digital Data Compression

Pixel values below the knee point (Pk) are not compressed (1:1 mapping); pixel values above

the knee point are compressed with a ratio of 1 over COMPRESS_RATIO. At the receiver

side, the original pixel levels can be reconstructed (except for the LSB bits for pixels above

Pk).

After limiting the output level to a lower number of bits that the input level, the framerate can

be increased by trimming the width of the output data channels, with OUTP_BITMODE.

Input

Level

Output

Level

1:1

1:2

1:4

1:8

CSG14K_CSG8K 数据表(PDF) 92 Page - OSRAM GmbH

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