Kurita Water Industries Ltd.

Hitachi Communication Technologies, Ltd.

Hiromi Murakami

Yoshimasa Kusano

Masatoshi Shibasaki

Takashi Funada

Takao Tsuneki

Yusuke Honda

Takahiko Uchida

Shinji Ano

Tomoyasu Imai

Masaru Okamoto

Kenji Kawamura

Hideo Ohtaka

A unit timing signal synchronized with a high-order transmission frame is used for measuring a difference between the number of data pieces of a client signal mapped to the high-frequency frame and the number of data pieces of the output client signal by integrating the difference therebetween for each unit timing signal. Then stuffing and de-stuffing operations are performed so that a integration result is zero.

Stuffing and destuffing operations when mapping low-order client signals into high-order transmission frames

A water treatment agent to be used by adding it to water systems, such as, those in boiler plant and water cooling circulation system, for preventing both corrosion and scale formation on the metal surfaces held in contact with water in the water systems, comprising, as effective components, a polymer product having maleic acid or maleic anhydride unit and a polymer product having acarylamide or methacrylamide unit.

Water treatment agent

Growing community of inventors

Yokohama, Japan

Hiromi Murakami