| 摘要 |
A CRT control apparatus for use in a high-resolution graphic display equipment is formed in a single MOS integrated-circuit (IC) chip which incorporates three multiplexers (42) for three 8-bit sets of color digital signals (24, 26, 28) from a frame buffer (22). The 8-bit outputs of the multiplexers are directed to digital-signal-transformation devices (54) which, in response to each 8-bit signal, produce a corresponding 10-bit signal incorporating the color-intensity information of the original 8-bit signal and incorporating a gamma correction factor for the particular intensity. The 10-bit signals are directed to 10-bit DACs (80, 82, 84) to produce corresponding analog control signals for the corresponding electron guns of the CRT (30). The 10-bit DACs (80, 82, 84) minimize differential non-linearity and glitch energy at critical digital code transitions. |
