A noise cancelling filter for the digital Holter monitoring system. - Takashi Kohama; Shogo Nakamura; Hiroshi Hoshino (ICASSP (3), 1994)

Adaptive data compression for a digital Holter monitoring system. - Takashi Kohama; Shogo Nakamura (Syst. Comput. Jpn., 1997)

The signal quantization using non-linear adaptive quantization functions. - Hiroto Saito; Takashi Kohama; Shogo Nakamura; Masahide Yoneyama (EUSIPCO, 2000)