A scanning conversion system to realize unified field of image-display

Furuhata, Takashi; Tamura, T.

doi:10.1109/11.979374

Cited by 2 publications

(1 citation statement)

References 7 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…2) Electromagnetic waves are considered to have harmful effects on the human body and may cause malfunctioning of electronic equipments, including medical implants. [4][5][6][7] In addition, equipment that use electromagnetic waves have limitations in their use at medical institutions and airplanes. Moreover, information in IC cards is in danger of skimming, [8][9][10][11] because the transfer characteristics of electromagnetic waves are superior in air.…”

Section: Introductionmentioning

confidence: 99%

Fundamental Study of Smart IC Card System Using Ultrasonic Information Transmission

Suzuki¹,

Ishihara²,

Katane

et al. 2006

jjap

View full text Add to dashboard Cite

In this study, we propose a new type of smart IC card using ultrasonic information transmission. Ultrasonic transmission is safe for the human body and does not cause malfunctioning of electronic equipments. In addition, information transmission using ultrasonic can prevent ''skimming'' to utilize ultrasonic characteristics that have a large attenuation in air and a sharp directivity. Our study deals with an experimental model system for preliminary development and the analysis of its results. To minimize the power consumption of the card, the system does not need carrier waves to transmit information from the card to the card-reader/writer (R/W), because base band signal is transmitted directly. For the results of the prototype experiment, a transmission speed of 115.2 kbps is obtained at less than 1 mm distance. The proposed ultrasonic IC card system can have various practical applications in which secret information is absolutely kept.

show abstract