Kabushiki Kaisha Toshiba

Ryusuke Murakami

Shinichi Yasuda

Atsushi Shimbo

Tetsufumi Tanamoto

Noriko Inoue

Akira Tomita

According to one embodiment, a random number generating circuit includes first to N-th oscillating circuits (N is a natural number equal to 2 or greater), first to N-th latch circuits that latch outputs of the first to N-th oscillating circuits by a first clock having a first frequency, first to N-th exclusive OR circuits, (N+1)-th to (2&#xd7;N)-th latch circuits that latch outputs of the first to N-th exclusive OR circuits by the first clock, an (N+1)-th exclusive OR circuit that outputs an exclusive OR of outputs of the (N+1)-th to (2&#xd7;N)-th latch circuits, and an M-bit shift register that converts serial data output from the (N+1)-th exclusive OR circuit into M-bit parallel data (M is a natural number equal to 2 or greater) by a second clock having a second frequency.

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Tokyo, Japan

Ryusuke Murakami