Abstract: Provided are a Peripheral Component Interconnect Express (PCIe) interface device and a method of operating the same. The PCIe interface device may include a performance analyzer and a traffic class controller. The performance analyzer may be configured to measure throughputs of multiple functions executed on one or more Direct Memory Access (DMA) devices. The traffic class controller may be configured to allocate traffic class values to transaction layer packets received from the multiple functions based on the throughputs of the multiple functions.

Abstract: A light guide panel has upper and lower surfaces, which are opposite from each other, and first and second side surfaces, which are opposite from each other, to guide light rays inputted therein through the first side surface, toward the second side surface through internal reflection between the upper and lower surfaces. The light guide panel includes a plurality of dot patterns formed on the lower surface to reflect and diffuse incident light rays; first prism projections formed on the upper surface and extending parallel to one another to transmit and concentrate light rays reflected by the dot patterns; and second prism projections formed on the upper surface to be crossed with the first prism projections and extending parallel to one another to transmit and concentrate light rays reflected by the dot patterns.