在这些特定的应用中,图 7-2 中所示的性能图显示了在有效数据图形时间为最大时间的情况下,对于不同的 MCP 模式,仍以每个 MCP 模式的最快图形速率运行时,每秒加载和显示的最大像素数。曝光周期增加时,每秒的像素数会减少。
以下公式说明了在不同复位模式下,当曝光周期设置为最小值时如何计算每秒加载和显示的最大像素数:
Pattern Rate = 1 ÷ Cycle Period
Pixel Data Rate = Pattern Rate × 4096 × 2176
对于全局复位模式,计算如下:
Global Block Exposure Period = 16 × 5.04444μs = 80.711μs
Cycle Period = 80.711μs + 4μs + 4μs = 88.711μs
Pattern Rate = 1 ÷ 88.711μs = 11.272kHz
Pixel Data Rate = 11.272kHz × 4096 × 2176 = 100.47Gbps
对于单块复位模式,计算如下:
Single Block Exposure Period = 11.67μs
Cycle Period = 11.67μs + 64μs + 4μs = 79.67μs
Pattern Rate = 1 ÷ 79.67μs = 12.551kHz
Pixel Data Rate = 12.551kHz × 4096 × 2176 = 111.88Gbps
对于双块复位模式,计算如下:
Dual Block Exposure Period = 44.71μs
Cycle Period = 44.71μs + 32μs + 4μs = 80.71μs
Pattern Rate = 1 ÷ 80.71μs = 12.390kHz
Pixel Data Rate = 12.390kHz × 4096 × 2176 = 110.43Gbps
对于加载单个 DMD 行并复位,公式和计算如下:
DMD Row Load Time = 5.04444μs ÷ 136 = 0.03709μs
Exposure Period = 0.03709μs
Cycle Period = 0.03709μs + 4μs + 4μs = 8.03709μs
Pattern Rate = 1 ÷ 8.03709μs = 124.423kHz
Pixel Data Rate = 124.423kHz × 4096 = 509.64Mbps