Cognitive Solutions A776 All in One Printer User Manual


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Chapter 5: Programming commands 143
A776-PG00001 C 12/09 A776 (B780) Programming Guide
Free Image
Hexadecimal: 1D BB nL nH
Parameters: nL nH is the FileIndex of the image buer space to be released.
Return: 1D 49 BB s nL nH, where nL nH is the count of typical images that can be stored in free space in circular buer
order. S = 0 means buer space was marked free, S = 1 no buered image at the specied index.
Description: This frees the space used by the image with FileIndex n for subsequent use in future image acquisition.
The image at FileIndex n will no longer be available for attribute listing or transmitting. The host should free images
that will never be retrieved; images that have been transmitted successfully will be automatically freed when their
space is needed for a new image.
Free Imager Buering
Hexadecimal: 1D BC m
Parameters: m = 0 free all buered images and all application set scan identifying properties (TIFF tags), m = 1: only
free buered images, m =2 only free application set TIFF tags.
Return: This command returns 1D 49 BC s nL nH, where nL nH is the maximum count of typical images that can be
stored in free space in circular buer order. S is a status byte, and it always returns as 0.
Description: This frees all the space used for image buering and/or application set pending tags. A status is returned
giving the image buer size in number of typical documents that can t.
Get Buered Image List
Hexadecimal: 1D BD
Parameters: none
Return: 1D 49 BD nL nH [FI-1 FI-2…)]
nL nH gives the size of the list in bytes, which is 3X the number of FileIndex’s currently stored. Each Index report FI-X is
3 bytes: s status = 0 image not transmitted, s = 1 transmitted, and a 2 byte index in nL nH form. For example if there
were two scanned documents in the list, the return would be: 1D 49 BD 6 0 s1 nL1 nH1 s2 nL2 nH2. If there are no
FileIndexes stored then n = 0 is returned without any FileIndex values.
Description: Content of the buer is described by a FileIndex list for all transmittable images using the structure
above.
Get Buered Image Attributes
Hexadecimal: 1D BE nL nH
Parameters: nL nH is the File Index of the image for which to return all its TIFF attributes.
Return: 1D 49 BE s (1 byte status), nL nH (index #). This is followed by mL mH, a 2 byte count of return length in bytes
and then all the TIFF tags are returned in the same structure used to set the tags via command Set Scan Identifying
Properties.
The values of s are: 0 = OK, 1= not in buer; this will also set the count of tags to 0.
Description: The attributes (Ti tags) that were present at the time of scan for the given le index are returned, in the
same format as used in the Set Scan Identifying Properties command.
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