Patent ID: 7917886
Filing Date: 2011-03-29
Classification: G06F,H05K

Abstract:
1. An automatic system for providing printed circuit board (PCB) layout of a PCB to be designed to allow a high-speed signal to be transmitted through, the system comprising: an input device to receive input information of the PCB to be designed; a storage device storing a name and a thickness of each layer of each of a plurality of PCBs; and a data processing device comprising: for reducing resonance reflection of the high-speed signal, wherein ε r is relative permittivity of the PCB, and BR is a transmission bit rate of the high-speed signal transmitted in the PCB, the actual length of the via stub of each layer equals the thickness of the PCB minus the thicknesses of high-speed signal layout layers through which the high-speed signal is transmitted of the PCB combined; and