1
Toshiaki Masuhara, Osamu Minato, Katsuhiro Shimohigashi, Hiroo Masuda, Hideo Sunami, Yoshio Sakai, Yoshiaki Kamigaki, Eiji Takeda, Yoshimune Hagiwara: Programmable semiconductor integrated circuitry including a programming semiconductor element. Hitachi, Antonelli Terry & Wands, June 19, 1984: US04455495 (106 worldwide citation)

A programmable semiconductor integrated circuitry including a circuit programming element is disclosed. The circuit programming element can be activated in a short-circuit mode by the irradiation of a laser or electron beam or by ion implantation so that it is converted from its original nonconducti ...


2
Terumi Sawase, Hideo Nakamura, Yoshimune Hagiwara, Toshimasa Kihara, Kiyoshi Matsubara, Tadashi Yamaura: Microcomputer having a PROM including data security and test circuitry. Hitachi, Antonelli Terry Stout & Kraus, December 29, 1992: US05175840 (68 worldwide citation)

Easy testability and data security of an electrically erasable programmable read only memory (EEPROM) can be accomplished by disposing pads and an input/output (I/O) circuit providing addresses, data and control signals necessary for the EEPROM test on a semiconductor substrate and by disposing a tw ...


3
Yoshimune Hagiwara, Shizuo Sugiyama, Narimichi Maeda, Osamu Yumoto, Takashi Akazawa, Masahito Kobayashi, Yasuhiro Kita, Yuzo Kita: Digital processor with floating point multiplier and adder suitable for digital signal processing. Hitachi, Hitachi Denshi Kabushiki Kaisha, Antonelli Terry & Wands, April 16, 1985: US04511990 (67 worldwide citation)

A signal processor having a wide dynamic range and which can process both data in the fixed point representation and data in the floating point representation by the use of a single floating-point arithmetic circuit is capable of processing digital signals, such as voice signals, at high speed and i ...


4
Noboru Yamaguchi, Kunio Uchiyama, Haruo Koizumi, Yoshimune Hagiwara, Tadahiko Nishimukai: Microprocessor capable of stopping its operation at any cycle time. Hitachi, Antonelli Terry & Wands, January 19, 1988: US04720811 (43 worldwide citation)

Herein disclosed is a method of controlling a microprocessor in accordance with the present invention characterized in that, when the microprocessor for executing a microprogram in accordance with clock cycles .PHI..sub.1 and .PHI..sub.2 receives a command (i.e., STOP signal) for stopping a normal o ...


5
Terumi Sawase, Kouki Noguchi, Hideo Nakamura, Yasushi Akao, Shiro Baba, Yoshimune Hagiwara: Single-chip microcomputer including non-volatile memory elements. Hitachi, Kenyon & Kenyon, June 14, 1994: US05321845 (39 worldwide citation)

A logic circuit built in a single-chip microprocessor is configured of electrically-programmable memory elements, and information is written into the memory elements from outside, whereby the logic circuit having any desired logical functions can be constructed. The writing operation of the memory e ...


6
Noboru Yamaguchi, Hideo Nakamura, Yoshimune Hagiwara, Tsukasa Sato, Haruo Koizumi: Method of diagnosing integrated logic circuit. Hitachi, Antonelli Terry Stout & Kraus, February 26, 1991: US04996659 (37 worldwide citation)

A method of diagnosis of an integrated logic circuit having function blocks, in which a test signal is supplied to the logic circuit; an input signal to and an output signal from at least one of the function blocks are detected by the use of a contactless probing device such as an electron beam prob ...


7
Terumi Sawase, Yoshimune Hagiwara, Hideo Nakamura, Hiroyuki Hatori, Shirou Baba, Yasushi Akao: Single chip microprocessor for satisfying requirement specification of users. Hitachi, Antonelli Terry Stout & Kraus, June 20, 1995: US05426744 (34 worldwide citation)

A typical single chip microcomputer disclosed in the present application comprises a control circuit, a processing circuit and a plurality of address register--status register pairs. A logical unit formed within the control circuit comprises an electrically writable non-volatile-semiconductor memory ...


8
Tetsuya Nakagawa, Kenji Kaneko, Yoshimune Hagiwara, Hitoshi Matsushima, Hirotada Ueda: High-speed multiplier having carry-save adder circuit. Hitachi, Antonelli Terry & Wands, June 21, 1988: US04752905 (34 worldwide citation)

A high-speed multiplier adapted to VLSI with a regularly arranged structure having a reduced number of addition stages. There is provided a carry save adder circuit wherein a time difference is imparted to signals input to full adders, in order to eliminate extra wait time in the signal propagation. ...


9
Yoshimune Hagiwara, Shizuo Sugiyama, Narimichi Maeda, Osamu Yumoto, Takashi Akazawa, Masahito Kobayashi, Yasuhiro Kita, Yuzo Kita: Arithmetic logic unit for floating point data and/or fixed point data. Hitachi, Hitachi Denshi Kabusihiki Kaisha, Antonelli Terry & Wands, October 28, 1986: US04620292 (29 worldwide citation)

A signal processor having a wide dynamic range and which can process both data in the fixed point representation and data in the floating point representation by the use of a single floating-point arithmetic circuit is capable of processing digital signals, such as voice signals, at high speed and i ...


10
Hirotada Ueda, Hitoshi Matsushima, Yoshimune Hagiwara, Kenji Kaneko: Processor capable of executing one or more programs by a plurality of operation units. Hitachi, Antonelli Terry & Wands, April 11, 1989: US04821187 (25 worldwide citation)

A processor comprises first and second operation units, a first program memory which contains first microinstructions for controlling the first operation unit and second microinstructions for controlling at least the second operation units, a second program memory which contains microinstructions fo ...



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