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 (290 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 (5 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 ...