Patent ID: 6285789
Filing Date: 2001-09-04
Classification: G06T

Abstract:
A variable length code decoder for MPEG (Motion Picture Expert Group), comprising:a barrel shifter for outputting the bit stream being decoded;a register for storing the output data of the barrel shifter;a finite state machine for parsing the output data of the barrel shifter and determining whether the data is ordinary data or more than 16-bit data, and outputs resultant control signals;a multiplexer coupled to receive inputs from the barrel shifter and the register and the control signal from the finite state machine for selectively outputting the output data of one of the barrel shifter and the register based on the number of bits of data; anda decoding unit for decoding a variable length code, a header code of a MPEG2 syntax from the output of the multiplexer in accordance with the control signal of the finite state machine.