1
Kunihiko Nakada: Data processor and microcomputer. Hitachi, Fay Sharpe Beall Fagan Minnich & McKee, October 5, 1999: US05961578 (16 worldwide citation)

In a microcomputer incorporating a microprocessor, the coprocessor having product-sum operation arithmetic units executes residue multiplications given by "A=A.multidot.B.multidot.R.sup.-1 mod N+kN", "A=A.sup.2 .multidot.R.sup.-1 mod N+kN" and "A=A.multidot.R.sup.-1 mod N 30 kN" and is provided with ...


2
Kawasaki Shunpei, Kurakazu Keiichi, Hasegawa Atsushi, Matsubara Kiyoshi, Noguchi Yoshiki, Hayakawa Akio, Itou Yoshitaka, Akao Yasushi, Osuga Hiroshi: Semiconductor integrated circuit device, data processor, and microcomputer. Renesas Technology, January 29, 2009: JP2009-020900

PROBLEM TO BE SOLVED: To provide a semiconductor integrated circuit device allowing a direct access, by expanding an operation margin of an SDRAM.SOLUTION: The semiconductor integrated circuit device has a central processing unit, a control circuit having an interface function for a memory connected ...


3
Yoshida Seiji, Minami Shinichi, Watabe Kozo, Tabata Takeshi, Maekawa Keiichi, Kawajiri Yoshiki: Nonvolatile memory, data processor, and microcomputer for ic card. Renesas Technology, January 26, 2006: JP2006-024309

PROBLEM TO BE SOLVED: To prevent an undesirable current from flowing into an unselected nonvolatile memory cell.SOLUTION: Each of a plurality of nonvolatile memory cells (MC) can store data in accordance with level of a threshold voltage, and the low threshold voltage level is regarded as a negative ...


4
Nakada Kunihiko: Data processor and microcomputer. Hitachi, January 23, 1998: JP1998-021057

PROBLEM TO BE SOLVED: To speed up processing for upper power remainder operation used for ciphering, deciphering, etc., by providing an arithmetic means which performs remainder operation based upon specific integers as value ranges of an input value and an output value and a control means which con ...


5
Mitsuishi Naomiki: Data processor and microcomputer. Hitachi, September 21, 1993: JP1993-241826

PURPOSE: To provide a data processor in which the increase of a logical and physical scale can be minimized, and a continuously usable address space can be relatively enlarged. CONSTITUTION: A 16 bit extended register Ei is added to 16 bit general registers RiH and RiL of an 8 bit CPU, so that a reg ...