Description
Metadata Insertion Methods
There are two distinct metadata insertion methods in the Grablink series.
METHOD 1: "Replace, on all taps, the pixel component data of the first Camera Link time slot."
The pixel(s) data conveyed during the first Camera Link time slot after an LVAL are replaced by metadata.
The quantity of metadata is defined by the number of taps.
The 3 configurations using this method are named, 1-field, 2-field, and 3-field, according to the quantity of metadata they contain.
This method is invoked when MetadataLocation=LVALRISE
.
METHOD 2: "Insert metadata on an unused tap, during several Camera Link time slots."
This method is invoked by setting MetadataLocation=TAP10
.
There is only one configuration using this method: TAP10.
In the Tap10 configuration, the 3-field of metadata are effectively inserted on Tap10 during the first 10 Camera Link Clock cycles of every line after the LVAL rising edge. For the other clock cycles, the frame grabber inserts bytes of '0'.
Metadata Configurations
The metadata combines 1, 2, or 3 fields using the following 4 configurations:
Field Name | 1-field configuration | 2-field configuration | 3-field configuration | Tap10 configuration |
---|---|---|---|---|
I/O State | OK | OK | OK | OK |
LVAL Count | - | OK | OK | OK |
Q Count | - | - | OK | OK |
The enumerated parameter MetadataContent
reports the metadata configuration.
Metadata Fields Content
Field Name | Description |
---|---|
I/O State | A 6-bit field reporting the logical state of all System I/O input lines belonging to the Channel |
LVAL Count | A 32-bit field reporting the current value of the LVAL pulse counter |
Q Count | A 32-bit field reporting the current value of the motion encoder pulse counter (Q) |
Feature Availability
Supported Products | Supported BoardTopology Values |
---|---|
PC1626 Grablink Full XR | All values: MONO , MONO_SLOW and MONO_DECA |
PC1622 Grablink Full | All values: MONO , MONO_SLOW and MONO_DECA |
PC1623 Grablink DualBase | All values: DUO and DUO_SLOW |
PC1624 Grablink Base | All values: MONO and MONO_SLOW |
Supported Products | Supported BoardTopology Values |
---|---|
PC1626 Grablink Full XR | MONO_DECA |
PC1622 Grablink Full | MONO_DECA |
Compatible Camera Interface Configurations
The following camera configurations allow to enable the metadata insertion feature and provide at least one field of metadata:
Camera Interface Characteristic | Supported cases |
---|---|
Image sensor geometry |
|
Pixel type |
|
Camera Link configurations |
BASE, MEDIUM, FULL, and 80-BIT |
Pixel bit depth |
|
Tap geometries | All tap geometries except:
|
The following camera interface configurations provide 3-field metadata:
Imaging
|
TapConfiguration |
TapGeometry |
Description |
---|---|---|---|
|
FULL_8T8 |
1X8 |
8-bit 8-tap, single X region, monochrome line-scan or TDI line-scan camera |
MEDIUM_2T24 |
1X2 |
24-bit 2-tap, single X region, RGB color line-scan or TDI-line-scan camera | |
MEDIUM_6T8 |
1X3_1Y2 |
8-bit 6-tap, single X region, bilinear monochrome or Bayer CFA line-scan camera |
The following camera interface configurations provide 3-field metadata:
Imaging
|
TapConfiguration |
TapGeometry |
Description |
---|---|---|---|
|
DECA_10T8 |
1X10 |
8-bit 10-tap, single X region, monochrome line-scan camera |
Usage Restriction
- Look-up table transformation
- On-board Bayer CFA to RGB color conversion
- Pixel bit depth reduction