Communications – electrical: acoustic wave systems and devices – Underwater system – Telemetering
Reexamination Certificate
2006-04-11
2006-04-11
Edwards, Jr., Timothy (Department: 2635)
Communications, electrical: acoustic wave systems and devices
Underwater system
Telemetering
C367S904000, C340S870180, C340S870190, C340S870250, C340S870260, C073S866500, C073S861230, C137S624110
Reexamination Certificate
active
07027357
ABSTRACT:
The present invention provides an acoustic transmitter for sequentially transmitting a plurality of pulse signals by sound. Each of the plurality of pulse signals is a signal of at least one modulated carrier wave, which has a predetermined frequency. The carrier wave of each of the pulse signals has a mutually different frequency. The transmitter performs amplitude modulation and/or phase modulation based on transmission information, and modulation by a signal indicating a window function, for the carrier wave of each of pulse signals. Then the transmitter sequentially transmits the plurality of pulse signals by sound.
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Fujiwara Jun
Sakuma Hirohisa
Edwards, Jr. Timothy
Staas & Halsey , LLP
Tokyo Gas Co. Ltd.
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