CHR71000 datasheet(35/54 Pages) AMSOSRAM

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CHR71000

Functional description

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7.4.2

Moving window

It is possible to change the position of the window every subsequent frame without

intermediate register uploads. The window can be moved by setting the registers

reg_addr_x_step and reg_addr_y_step. If they are both set to 0, the window does not move. If

one of the registers as set to a non-zero value, the window moves in that direction. If both are

set, the window moves diagonally.

Window stepping is only allowed if the number of frames is constrained. If the reg_nrof_frames

The reg_addr_x/y_step registers are 10-bit wide and represent a signed integer. This allows

stepping in both positive and negative directions (the window can move up-left, left, down-left,

down, down-right, right, up-right and up). These registers have the same behavior as the

windowing registers (steps of 8 and 16).

Table 11: Moving window setting

10-bit

Int

Signed int

00 0000 0000

00 0000 0001

…

01 1111 1111

511

10 0000 0000

512

-512

10 0000 0001

513

-511

…

11 1111 1111

1023

-1

If invalid frame settings are set in moving window mode (addresses out of range), frame

grabbing is aborted at the start of the next frame and the sensor will return to idle mode.

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