Global Patent Index - EP 1051804 A1

EP 1051804 A1 2000-11-15 - PIEZOELECTRIC KEYBOARD

Title (en)

PIEZOELECTRIC KEYBOARD

Title (de)

PIEZOELEKTRISCHE TASTATUR

Title (fr)

CLAVIER PIEZOELECTRIQUE

Publication

EP 1051804 A1 (EN)

Application

EP 99906148 A

Priority

  • EP 99906148 A
  • EP 9900263 W
  • EP 98810067 A

Abstract (en)

[origin: EP0933873A1] A keyboard suitable for use as an input device for electronic data comprises a plurality of keys arranged in an array formed of at least two lines L1,L2 and at least two columns C1,C2; each key comprises a piezoelectric element (11...44) capable of generating an electric charge when operating the corresponding key; all keys are connected both to a common first electrode means as well as to a second electrode means so that upon actuation of a key of the keyboard an electric charge or signal generated by the actuated key is produced which is indicative of the position of the key within the keyboard; each piezoelectric elements comprises at least two segments and each of these segments is connected separately to the second electrode means. <IMAGE>

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

H03K 17/96

IPC 8 full level (invention and additional information)

H03K 17/96 (2006.01)

CPC (invention and additional information)

H03K 17/9643 (2013.01)

Citation (search report)

See references of WO 9939436A1

Designated contracting state (EPC)

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

EPO simple patent family

EP 0933873 A1 19990804; AU 2618499 A 19990816; EP 1051804 A1 20001115; WO 9939436 A1 19990805

INPADOC legal status


2002-09-25 [18R] REFUSED

- Effective date: 20020506

2001-08-08 [17Q] FIRST EXAMINATION REPORT

- Effective date: 20010627

2000-11-15 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20000513

2000-11-15 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

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