Shoichi Miyazawa | Researchain

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international solid-state circuits conference | 1996

A 150 Mb/s PRML chip for magnetic disk drives

Seiichi Mita; Yasuhide Ouchi; Terumi Takashi; Nobuo Sato; H. Aoi; Satoshi Minoshima; Tomoaki Hirai; Hideki Miyasaka; Ryushi Shimokawa; T. Matsuura; Hideki Sawaguchi; Shoichi Miyazawa; K. Hikasa

Recent magnetic disk drives require high transfer rates and recording densities. PRML signaling is now prevalent in digital read/write channels. This PRML chip operates at a maximum data rate of 150 Mb/s with 1550 mW and includes all basic functions such as servo demodulation and write pre-compensation for magnetic disk drives with optimized circuit size. The chip is fabricated in 0.7 /spl mu/m double-poly double-metal BICMOS suitable for low-power devices and is packed in a 100-pin quad flat package with a die approximately 7 mm/sup 2/. This chip has a single 5 V power supply.

Archive | 1991

Peripheral equipment control device

Yukari Nagashige; Shoichi Miyazawa; Kunio Watanabe; Kouji Shida; Shinichi Kojima

Archive | 1993

Array disk controller for grouping host commands into a single virtual host command

Naoto Matsunami; Minoru Yoshida; Shoichi Miyazawa; Takashi Oeda; Kiyoshi Honda; Shuji Ohno

Archive | 2002

Signal processing circuit and information recording/reproducing apparatus using the same, and method for optimizing coefficients of equalizer circuit

Naoki Satoh; Seiichi Mita; Shoichi Miyazawa; Terumi Takashi; Yosuke Hori; Yoshiju Watanabe; Akihiko Hirano; Satoshi Minoshima; Hideki Miyasaka; Toshihiro Nitta; Tomoaki Hirai; Ryushi Shimokawa; Koji Shida; Yasuhide Ouchi

Archive | 1995

Phase locked loop circuit with adjustable offset characteristic, method for adjustment and apparatus

Eisaku Saiki; Masashi Mori; Shintaro Suzumura; Shoichi Miyazawa; Terumi Takashi

Archive | 1993

Method of and apparatus for recording on and reproducing from disk-type recording medium having recording tracks with sectors each having an ID area and a data area

Yukari Katayama; Hitoshi Ogawa; Motoyasu Tsunoda; Tsuneo Hirose; Akira Kojima; Eisaku Saiki; Yasunori Kaneda; Katsuhiro Tsuneta; Shoichi Miyazawa; Terumi Takashi

Archive | 1995