VV5430 查看數據表（PDF） - STMicroelectronics

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VV5430

Monochrome Analog Output CMOS Image Sensors

STMicroelectronics 

VV5430

Shuffle Modes

6. Shuffle Modes

The pixels in the VV5430 sensor array can be output to AVO as alternate columns and rows by setting bits 5 and 6 in the Setup

Code_1 register (header code 0001 - see Serial Interface for details). This has the effect of generating two, or four, identical low

resolution images in one field:

Unshuffled Image

Horizontal Shuffle

Vertical Shuffle

Hor. + Vert. Shuffle

When this facility is combined with AVO Enable selected for the appropriate quarter, it is possible to display the images from four

separate cameras on one monitor.

In order to achieve four identical images in one frame (from one sensor), bits 5 and 6 of Setup Code_1 must both be set via the

serial interface, that is HSHUFFLE=1 and VSHUFFLE=1. The former interleaves odd and even pixel lines in the image, and the

latter interleaves pixel columns. OE[0..2] can then Enable AVO output for any one quarter of the display field.

6.1 Quarter mode output

The VV5430 video output can be Enabled in different parts of the standard field by programming bits 9..11 of Setup Code_2, that

is CE[0..2]; when not enabled, the AVO output is Tristated, that is floating at high impedance. Thus, a number of different sensor

AVO outputs can be connected together and selectively enabled. This feature, together with bus addressing of up to four

VV5430s on one serial link, is intended for multi-sensor systems that, in conjunction with bits 5,6 of Setup Code_1, enable the

images from up to four cameras to be displayed on a single monitor.

By programming CE[0..2] different areas of the field can be enabled:.

Pixels

Sync

Sync + Blanking

Q1

Q2

Q3

Q4

Image subdivided into 4 quarters :

CCIR: 384 pixels x 287 lines:

Q1,Q2 = 192 x 142 Q3, Q4 = 192 x 142

EIA: 320 pixels x 243 lines:

Q1,Q2 = 160 x 120 Q3, Q4 = 160 x 120

15/33

CD5430F-A

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