Abstract: Disclosed herein is a substrate transferring apparatus. The apparatus comprises air injection modules, which serve to float a substrate, and can be independently attached to or detached from the substrate transferring apparatus. Thus, even if any one of the air injection modules is damaged, the substrate is prevented from falling because other air injection modules serve to continuously float the substrate. Furthermore, with such a construction, the air injection modules have an advantage in view of maintenance.

Abstract: A steering system for steering front and rear wheels of an industrial vehicle has an upper frame rotatably coupled on an upper side of a lower frame, a steering system rotating the front and rear wheels in a predetermined direction as a steering wheel is rotated, a differential driving unit mounted to each of the wheels and differentially driving the left wheel and the right wheel according to a load applied to the wheels, a boom assembly having a boom length adjuster, and an upper frame pivoting unit provided between the lower and upper frames and rotating the upper frame in relation to the lower frame.

Abstract: Disclosed herein is a substrate transferring apparatus. The apparatus comprises air injection modules, which serve to float a substrate, and can be independently attached to or detached from the substrate transferring apparatus. Thus, even if any one of the air injection modules is damaged, the substrate is prevented from falling because other air injection modules serve to continuously float the substrate. Furthermore, with such a construction, the air injection modules have an advantage in view of maintenance.

Abstract: A start code detecting apparatus for detecting a start code which indicates the start position of each layer from the bit stream of a compressed image according to the MPEG-standard is provided. The start code detecting apparatus includes two registers, a barrel shifter, a start code detector, a state machine, a code length generator and an accumulator. The start code detecting apparatus adopts the barrel shifter and the start code detector, so that the start code designating the start position of each layer can be effectively detected from the compressed bit stream.

Abstract: A circuit for separating the luminance signal and chrominance signal from a composite video signal in a digital signal processing system using adaptive 2H comb filters. The circuit according to the present invention generates luminance difference signals, and chrominance difference signals from the horizontal scanning lines of a composite video signal for the purpose of detecting the correlation of the chrominance difference signals as well as the correlation of the luminance difference signals to generate a correlation coefficient. The chrominance signal is accurately separated from a composite video signal in response to the generated correlation coefficient.