Nippon Telegraph and Telephone Corporation

Ntt Electronics Corporation

Institute of Medicinal Molecular Design, Inc.

Yasuyuki Endo

Masahito Tomizawa

Yutaka Miyamoto

Yoshiaki Kisaka

Etsushi Yamazaki

Mitsuteru Yoshida

Kazuhito Takei

Shigeki Aisawa

Katsuichi Oyama

Yasuharu Onuma

Katsuyoshi Miura

A plurality of error correction circuits corrects errors of the data transmitted through the plurality of transmission lines. A combining portion combines the plurality of transmission lines to the plurality of error correction circuits. The plurality of transmission lines includes a first transmission line, and a second transmission line having a lower transmission characteristic than the first transmission line. The plurality of error correction circuits includes a first and a second error correction circuit having lower error correction capability and power consumption than the first error correction circuit. The combining portion uses a function to combine a plurality of error correction circuits with one transmission path, combines the first transmission line with the second error correction circuit at a higher rate than the first error correction circuit, and combines the second transmission line with the first error correction circuit at a higher rate than the second error correction circuit.

Error correction device, error correction method, and communication device

An optical digital transmission system of the present invention newly defines one second negative stuff byte in an overhead area for accommodation of the client signals with multiplexing into the OTU frame, newly defines one third positive stuff byte in a corresponding tributary slot in a payload area for accommodation of client signals with multiplexing, newly defines stuff control bits that is used for decision of the use of the second negative stuff byte and the third positive stuff byte in three different places in the overhead area for client signal accommodation with multiplexing, performs control by using the newly defined stuff control bits when accommodation of the client signal with the third positive stuff byte or the second negative stuff byte is required, and performs stuff control without using the newly defined stuff control bits when accommodation of the client signal by the third positive stuff byte and the second negative stuff byte is not required.

Optical digital transmission system

A medicament comprising as an active ingredient a compound or a physiologically acceptable salt thereof represented by general formula (I):wherein Rrepresents a dicarba-closo-dodecaboran-yl which may be substituted with a lower alkyl group, a lower alkenyl group, carboxyl group or the like; Rrepresents carboxyl group, a lower alkoxycarbonyl group, or hydroxyl group; and X represents a single bond or a linking group such as &#x2014;CO&#x2014;Y&#x2014; wherein Yrepresents oxygen or &#x2014;N(R)&#x2014; wherein Rrepresents hydrogen or a lower alkyl.

Dicarba-closo-dodecarborane derivatives

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Kanagawa, Japan

Yasuyuki Endo