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    • 5. 发明申请
    • High-visibility airborne color LED display sign
    • 高可见性机载彩色LED显示屏标志
    • US20070044355A1
    • 2007-03-01
    • US11217897
    • 2005-09-01
    • Robert ShofnerRobert PeacockJames Maloney
    • Robert ShofnerRobert PeacockJames Maloney
    • G09F21/06
    • G09F21/10G09F9/33G09F19/22
    • A large-scale high-visibility, color LED display sign intended for viewing from a long distance is described wherein power is managed by dividing the display sign into two or more distinct sections and providing power to each section from a respective separate power source. As a result, the amount of current drawn from any one source is reduced, thereby reducing require conductor sizes, circuit breaker trip limits, etc. Additionally, in applications where two or more power sources are available, this permits the distribution of the power load from the sign across the multiple sources without requiring bulky, complex and expensive power sharing apparatus. The sign's computer interface electronics are operated (scanned) directly by bus-connected interface circuitry. This eliminates the need for an external image buffer memory, since the computer's local memory acts as an image buffer. The computer serially transmits pixel data to the display via the interface mechanism. The display data is held in shift registers that receive the serial data. When the data for any given section of the sign is completely shifted in, a strobe is generated to transfer the pixel data to the display. Because of the direct bus-connected nature and direct computer control of the scanning action of the sign's interface circuitry, considerable interface circuitry is eliminated and data transfer operations at the full speed of the computer system.
    • 描述了用于从长距离观看的大规模高可见度彩色LED显示符号,其中通过将显示符号分成两个或更多个不同部分并且从相应的单独的电源向每个部分提供电力来管理功率。 因此,从任何一个源引出的电流量减少,从而减少需要导体尺寸,断路器跳闸限制等。另外,在两个或多个电源可用的应用中,这允许功率负载的分配 从多个来源的标志,而不需要庞大,复杂和昂贵的功率共享设备。 标志的计算机接口电子设备由总线连接的接口电路直接操作(扫描)。 这样就无需外部图像缓冲存储器,因为计算机的本地存储器充当图像缓冲器。 计算机通过接口机制将像素数据串行发送到显示器。 显示数据保存在接收串行数据的移位寄存器中。 当符号的任何给定部分的数据被完全移入时,产生选通以将像素数据传送到显示器。 由于直接总线连接性质和直接计算机控制符号接口电路的扫描动作,消除了相当大的接口电路,并以计算机系统的全速数据传输操作。