Global Patent Index - EP 1040318 A1

EP 1040318 A1 2000-10-04 - METHOD AND DEVICE FOR OBTAINING POSITIONAL INFORMATION

Title (en)

METHOD AND DEVICE FOR OBTAINING POSITIONAL INFORMATION

Title (de)

VERFAHREN UND VORRICHTUNG ZUR ERFASSUNG VON POSITIONSINFORMATION

Title (fr)

PROCEDE ET DISPOSITIF POUR L'OBTENTION D'INFORMATIONS DE POSITION

Publication

EP 1040318 A1 (EN)

Application

EP 98959063 A

Priority

  • GB 9803731 W
  • GB 9726640 A

Abstract (en)

[origin: WO9932853A1] A method of obtaining positional information utilising a device (10) comprising a first member (11) having at least two electrically isolated conducting parts (13-16), and a second electrically conducting member (12) adjacent to and capacitively coupled to the first member (11), the first and second members (11, 12) being relatively movable such that the proportions of the respective parts (13-16) of the first member (11) in overlapping relationship with the second member (12) may be varied, the method comprising the steps of providing a first square waveform signal (26) to one of the parts (13-16) of the first member (11) and a second square waveform signal (27) to the other of the parts (13-16) of the first member (11), analysing a signal arising in the capacitively coupled second member (12) to obtain a device output signal (50) containing information about the relative positions of the first and second members (11, 12).

IPC 1-7 (main, further and additional classification)

G01D 5/241; G06K 11/16

IPC 8 full level (invention and additional information)

G01D 5/241 (2006.01); G06F 3/033 (2006.01); G06F 3/044 (2006.01)

CPC (invention and additional information)

G06F 3/044 (2013.01); G01D 5/2412 (2013.01)

Citation (search report)

See references of WO 9932853A1

Designated contracting state (EPC)

AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

EPO simple patent family

WO 9932853 A1 19990701; AU 1499199 A 19990712; CA 2314176 A1 19990701; EP 1040318 A1 20001004; GB 9726640 D0 19980218; ZA 9811622 B 19990623

INPADOC legal status


2002-10-02 [18D] DEEMED TO BE WITHDRAWN

- Effective date: 20020228

2001-12-05 [17Q] FIRST EXAMINATION REPORT

- Effective date: 20011017

2000-10-04 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20000614

2000-10-04 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

- Designated State(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE