Panasonic Corporation

Matsushita Electric Industrial Co., Ltd.

Socionext Inc.

Takahiro Kageyama

Takeshi Tanaka

Hideshi Nishida

Kouji Nakajima

Nobuo Higaki

Takeshi Furuta

Yuya Shigenobu

Masaki Minami

Motokazu Ozawa

A Very Long Instruction Word (VLIW) processor having an instruction set with a reduced size resulting in a small number of bits being necessary to specify registers. The VLIW processor includes a register file, and first through third operation units, and executes a very long instruction word. Further, the very long instruction word includes a register specifying field which specifies a least one of the registers in the register file and a plurality of instructions. The operand of each instruction includes bits src, src, and dst, which indicate whether or not the registers specified by the register specifying field are to be used as the source register and the destination register.

Very-long instruction word (VLIW) processor and compiler for executing instructions in parallel

Very long instruction word (VLIW) computer having efficient instruction code format

A variable-length code decoding apparatus that decodes a bitstream includes: a storage unit that stores a variable-length code table; a bitstream cutout unit that outputs a bit string of a fixed length; a reference unit that outputs decoded data and a code length with reference to the storage unit; a determination unit that determines whether a bit string of the fixed length is accumulated; a determination unit that determines whether a bit string of a length that is shorter than the fixed length is accumulated; and a selection unit that selects one of the determination results from the determination units. The bitstream cutout unit sets a starting bit based on the selected determination result, and the selection unit switches the selection of the determination results from the determination units.

Variable-length code decoding apparatus and method

Very long instruction word (VLIW) computer having an efficient instruction code format

Growing community of inventors

Osaka, Japan

Takahiro Kageyama