Method and circuit for reading code words having variable lengths out of a memory used for code words having fixed lengths of words

摘要

A circuit and method for reading code words having variable lengths out of memory used for data words having a fixed length. In the circuit and method, two shifting operations are separated from each other in dimension and time. The first shifting operation is performed using a combination of multiplexers and buffers that does not include a barrel shifter. The circuit and method are especially suitable for use in the decompression of data when transmitting multimedia information, such as information based on H.261, JPEG and MPEG standards.