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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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STV9211 датащи(PDF) 10 Page - STMicroelectronics |
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STV9211 датащи(HTML) 10 Page - STMicroelectronics |
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10 / 37 page  Functional description STV9211 10/37 2.6 Drive adjustment (3 x 8 bits) In order to perform the “White balance” adjustment, the gain of the three RGB signals are adjustable separately via the three Drive amplifiers (Registers 3, 4 and 5, I2C table 1). The very large range of the Drives (48 dB) allows different standards or custom color temperatures. It can also be used to adjust the output voltages at the optimum amplitude to drive the CRT drivers, keeping the whole contrast control for the end-user only. Figure 6: Drive adjustment Adjustment Channel each channel Independantly Register name / address Number step / resolution min / max Attenuation DRV = min D RV =m ax DR V = Typ Drive DRV / 03, 04, 05 256 (8 bit) / 0,19 dB 0 / - 48 dB DRV = min DR V = ma x DR V = Typ Case #1: Brightness before Drive Register 13, b6=0 Register 13, b6=1 BLK Output Output Case #2: Brightness after Drive Black levels InfraBlack level Black level InfraBlack level |
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