1

Masaaki Yasumoto, Hiroshi Hayama, Tadayoshi Enomoto:
Process of fabricating three-dimensional semiconductor device.
NEC Corporation,
Sughrue Mion Zinn Macpeak and Seas,
September 16, 1986:
US04612083
(299 worldwide citation)

A process of fabricating a three-dimensional semiconductor device, comprising the steps of preparing at least two multilayer structures each including at least one semiconductor element and a conductor connected at one end to the semiconductor element and having at the other end an exposed surface, ...

2

Masaaki Yasumoto, Tadayoshi Enomoto, Masakazu Yamashina:
Arithmetic circuit for calculating the absolute value of the difference between a pair of input signals.
NEC Corporation,
Sughrue Mion Zinn Macpeak & Seas,
July 18, 1989:
US04849921
(32 worldwide citation)

An arithmetic circuit has a first subtracter receiving first and second input signals which are composed of a plurality of bits and operative to output a first output signal representative of the first input signal minus the second input signal, and a second subtracter receiving the first and second ...

3

Masato Motomura, Tadayoshi Enomoto:
Motion picture coder and system for controlling the same.
NEC Corporation,
Young & Thompson,
February 28, 1995:
US05394189
(14 worldwide citation)

A motion picture coder for coding plural macro blocks of motion picture data based on a standardizing system is disclosed. The coder comprises first and second pipe-lined processors executing different coding processes respectively, both of which are separated from one another so as to accomplish a ...

4

Masakazu Yamashina, Hachiro Yamada, Tadayoshi Enomoto:
High speed digital signal processor for signed digit numbers.
NEC Corporation,
Foley & Lardner Schwartz Jeffery Schwaab Mack Blumenthal & Evans,
January 15, 1991:
US04985861
(6 worldwide citation)

For improvement in processing speed, a high-speed digital signal processor has a feedback loop from a register which stores the calculating result produced by a Signed Digit (SD) arithmetic unit to one of the input ports of the SD arithmetic unit. The SD arithmetic unit executes an arithmetic operat ...