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(12) PATENT APPLICATION PUBLICATION
(19) INDIA (21) Application No.: 00891/KOLNP/2005 A
(22) Date of filing of Application: 16/05/2005 (43) Publication Date: 09/06/2006
(54) Title of the invention: CONTACT SENSITIVE DEVICE
(51) International classification : G06K 11/00
(31) Priority Document No : 0228512.0
(32) Priority Date : 06/12/2002
(33) Name of priority country : GB
(86) International Application No and : PCT/GB03/005268
Filing Date
: & 03/12/2003
(87) International Publication No : WO 04/053781
(61) Patent of addition to Application No : NA
Filed on : NA
(62) Divisional to Application No : NA
Filed on : NA
(57) Abstract:
A contact sensitive device comprises a member (12) capable of
supporting bending waves, three sensors (16) mounted on the member
(12) for measuring bending wave vibration in the member, whereby
each sensor (16) determines a measured bending wave signal and a
processor which calculates a location of a contact on the member
from the measured bending wave signals. The processor calculates a
phase angle for each measured bending wave signal and a phase
difference between the phase angles of least two pairs of sensors so
that at least two phase differences are calculated from which the
location of the contact is determined.
(FIG). 1
(71) Name of Applicant:
NEW TRANSDUCERS LIMITED.,
Address of the Applicant:
CYGNET HOUSE, KINGFISHER WAY
HINCHINGBROOKE BUSINESS PAEK,
HUNTINGDON CAMBS PE29 6FW, UK.
(72) Name of the Inventor:
HILL, NICHOLAS, PATRICK, ROLAND
SULLIVAN, DARIUS, MARITN
Filed U/S 5(2) before The Patents (Amendment)
Act, 2005: NO
The Patent Office Journal 09/06/2006 11042