Pulnix TMC-6700 Series Instrukcja Użytkownika Pobierz pdf (Strona 38)

Hardware

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INSPECTA hardware manual Rev 1.86 page 38

2.6.2.1 Command description

The z-command selects one of six VGA mode.

Z-mode = 0 VGA mode 12h 640 x 480 x 16 grey ( function: palette, mvga )

Z-mode = 1 VGA mode 13h 320 x 200 x 256 grey ( function: palette928(0), m13vga )

Z-mode = 2 S3 mode 201h 640 x 480 x 256 grey, VGA memory access via S3 grafik engine with

zoom out/in, clip-windows, overlay, bitblt, poly-Line.

( functions: palette928 (0), vmfg_put2win, vmfg_put4win )

Z-mode = 3 VESA Mode 112h, 640 x 480 x 24 bit color or 800*600*16 bit color, direct VGA

memory access.

( functions: init928 (5), palette928 (2), mvfg_dmawin (color=2) )

Z-mode = 4 S3 Mode 101h/201h, 640 x 480 x 256 grey, direct VGA memory access

( functions: init928 (0), palette928 (0), mvfg_dmawin (color=0 ) )

Z-mode = 5 S3 Mode 103/203h, 1024 x 768 x 256 grey, direct VGA memory access.

( functions: init928 (4), palette928 (0), mvfg_dmawin (color=0 ) )

All Z-mode >1 need a VESA driver.

The Z-command activates (INSPECTA only) the direct transfer of video data into VGA when Z-mode 4 is selected.

After pressing „Z“ once, direct VGA transfer is activated with key „+“ and deactivated with key „-„.

The v-command zooms the displayed image out. This works only in the z-modes 0, 1, and 2. Zooming-in is done by

ommitting pixels and lines.

In z-mode 2 a zoom-in function is provided by selecting a negative value within v-command. (use „-“ key for values

FFFE to FFF5)

The d-command needs a z-mode = 0 and the sync mode = FFFF (see s-command).It subtracts the grey values of the

same pixel in consecutive images. The difference is displayed as a color coding for each pixel. (black=0, blue=1,

green=2, cyan=3 etc.) The delta function gives a quick look to the noise generated by the camera and the anlog section

in the frame grabber.

The m-command (mfg_modcam) selects video source, (internal test pattern analog, or digital) the sync source

(internal, external or comosite) and the clock source (intern or extern).

A selected camera mode uses all necessary format information from default values within MPFGDRVA. Especially

with standard analog cameras, these defaults will not always match with those values which are necessary for the

specific plugged camera. Use commands e, n, l, b, w, x, y to interactively change the parameters for a specific camera

and use those parameters within the application.

See Appendix C for available camera modes

If for a chosen mode, no or a wrong camera is connected, the test pattern appears.

The n-command changes the number pixels per line to store. It changes the global variable linelen and calls the

function h_start to make the change effective.

The b-command chnges the number of black pixel at begin of a line.

The l-command changes the global variable numlin and calls the function h_start to make the change effective. Note

that the value of numlin includes back lines at begin end end of frame (commands e, j)

The e-command changes the global variable mfg_blacklines and calls the function h_start to make the change

effective. Thus the number of black lines at begin of frame are is adjusted.

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