Kabushiki Kaisha Toshiba

Junichi Takeda

Mikio Hashimoto

Yasuro Shobatake

Yoshiaki Takabatake

Keiji Tsunoda

Masakazu Yaginuma

Narito Kimura

Masanori Matsuda

Taketoshi Tujita

A semiconductor device according to the present embodiment is provided with a controller, a first detector, a second detector, and a determiner. In a first measurement, the first detector detects a first measured value correlated with the propagation time of the first acoustic wave in a first detection period from the transmission to the reception of the first acoustic wave. In a second measurement, the second detector detects a second measured value correlated with the propagation time of the second acoustic wave in a second detection period from the transmission to the reception of the second acoustic wave. The determiner determines the presence or absence of the second measurement on the basis of the result of comparison between the first measured value and another first measured value measured earlier than the first measured value.

Semiconductor acoustic measurement device that determines the presence or absence of the second ultrasonic measurement

A switching apparatus includes an input port to which information data associated with an ATM cell is input, a memory for storing information data input via the input port, a processor for sequentially performing frame synchronization process for finding a frame and ATM cell synchronization process for checking a cell structure with respect to information data read out from the memory, and an output port for outputting information data processed by the processor.

Switching apparatus for ATM

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Yokohama Kanagawa, Japan

Junichi Takeda