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Browse Prior Art Database

Wireless communication for underwater intervention

IP.com Disclosure Number: IPCOM000022657D
Original Publication Date: 2004-Mar-24
Included in the Prior Art Database: 2004-Mar-24
Document File: 2 page(s) / 50K

Publishing Venue

IBM

Abstract

The invention relates to the field of communication underwater, more particularly to underwater communication using electronic writing tablets.

This text was extracted from a PDF file.
This is the abbreviated version, containing approximately 71% of the total text.

Page 1 of 2

Wireless communication for underwater intervention

Communication between divers and between divers and surface
workers is
a difficult problem. In recreational diving hand signals and
underwater writing tablets are used to communicate, but are
limited to
the range of visibility, which is often very short, and
commercial
divers may use expensive microphones that permit spoken
communication
by requiring face masks instead of the more usual mouthpiece.

Pen computing has been around for many years, including products
such
as the Apple Newton, Palm Pilot and a long line of tablet
computers. Such computers detect the motion of a pen (using
methods
such as pressure, electical resistance, ultrasound or
electromagnetic
fields) and record the position (and optionally pressure, angle
and
pen-surface contact) of the pen over time. A temporal sequence of
such
positions is often stored in a digital datatype known as
"electronic
ink". Various tablet computers have permitted the transmission of
electronic ink allowing messages written on one tablet to be read
on
another tablet.

This invention applies the concept of electronic ink to
underwater
communication by proposing the unification of underwater
transmission
methods with PDA-like devices. Naturally such methods can be used
to transmit data gathered using other sensors, particularly human
input devices such as mouse, keyboard, trackpoint, touch pad,
microphone etc. but pen input is particularly well-suited to
data-entry by pen. Electronic ink can...