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| 型号： | GMZAN3T |
| 厂商： | Electronic Theatre Controls, Inc. |
| 英文描述： | XGA ALALOG INTERFACE LCD MONITOR CONTROLLER |
| 中文描述： | ALALOG的XGA液晶显示器接口控制器 |
| 文件页数： | 26/53页 |
| 文件大小： | 556K |
| 代理商： | GMZAN3T |
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gmZAN3 Preliminary Data Sheet
C0523-DAT-01G
32
July 2003
Ge nes i s Microc hip Confid e n tia l
http:// w ww . g enesis-mic r ochip.com
Figure 17.
ADC Capture Window
The Reference Point marks the leading edge of the first internal HSYNC following the leading edge of an
internal VSYNC. Both the internal HSYNC and the internal VSYNC are derived from external HSYNC
and VSYNC inputs.
Horizontal parameters are defined in terms of single pixel increments relative to the internal horizontal
sync. Vertical parameters are defined in terms of single line increments relative to the internal vertical
sync.
For ADC interlaced inputs, the gmZAN3 may be programmed to automatically determine the field type
(even or odd) from the VSYNC/HSYNC relative timing. See Input Format Measurement, Section 4.4.
4.4 Test Pattern Generator (TPG)
The gmZAN3 contains hundreds of test patterns, some of which are shown in Figure 18. Once
programmed, the gmZAN3 test pattern generator can replace a video source (e.g. a PC) during factory
calibration and test. This simplifies the test procedure and eliminates the possibility of image noise being
injected into the system from the source. The foreground and background colors are programmable. In
addition, the gmZAN3 OSD controller can be used to produce other patterns.
Figure 18.
Some of gmZAN3 built-in test patterns
The DDC port can be used for factory testing. The factory test station connects to the gmZAN3 through
the Direct Data Channel (DDC) of the DSUB15 connector. Then, the PC can make gmZAN3 display test
patterns (see section 4.4). A camera can be used to automate the calibration of the LCD panel.
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