VARIABLE LENGTH DECODER

摘要

PURPOSE:To provide the variable length decoder in which the capacity of a lookup table is made small so as to reduce the hardware scale. CONSTITUTION:A prefix data generating section 17 compares plural bits from a head of a bit string having a prescribed bit number outputted from a barrel shifter 11 with a prescribed pattern and generates a bank address of a small bit number allocated to the prescribed pattern when the both are coincident. The lookup table 14 uses the bank address as a high-order address and uses plural remaining bits resulting from eliminating a prescribed pattern coincident among code bits for a low-order address so as to apply addressing to decoded data.