Nippon Telegraph and Telephone Corporation

Nobutaro Shibata

Mitsuru Shinagawa

Tadashi Minotani

Junzo Yamada

Ai-ichiro Sasaki

Tsuneo Mano

Ai-Ichiro Sasaki

A transceiver for inducing electric fields according to data to be transmitted in an electric field propagating medium, and carrying out at least data transmission by using induced electric fields, is formed by a transmission unit configured to modulate the data to be transmitted by generating alternating current signals having a prescribed frequency, and transmit modulated signals obtained by modulating the data to be transmitted, and a resonance causing unit configured to cause a series resonance with a parasitic capacitance appearing between a ground for the transmission unit and an Earth ground and a parasitic capacitance appearing between the electric field propagating medium and the Earth Ground.

Transceiver capable of causing series resonance with parasitic capacitance

A memory device which employs multilevel memory cells has a basic arrangement in which a write device writes multilevel information corresponding to binary data of plural bits in the memory cells and a readout device outputs binary data of plural bits representing the multilevel information read out of the memory cells. The memory device includes a multilevel detector for detecting the information of the memory cells at one time and reference level generator for generating reference levels therefor, thereby permitting the reduction of the bit area of each memory cell and increased speed during the operation of the memory device.

Memory device employing multilevel storage circuits

Growing community of inventors

Atsugi, Japan

Nobutaro Shibata