ANALYZER ELECTRONIC CIRCUIT WITH ENERGIZATION AXIS/DETECTION AXIS ALTERNATION FOR PASSIVE-MATRIX MULTICONTRACT TACTILE SENSOR

• US 20100302197A1
• Filed: 12/19/2008
• Published: 12/02/2010
• Est. Priority Date: 12/19/2007
• Status: Active Grant

• Current Assignee: Nissha Printing Company Limited
• Original Assignee: Stantum SAS
• Inventors: Olivier, Julien, Largillier, Guillaume, Joguet, Pascal
• Granted Patent: US 8,363,023 B2
• Time in Patent Office: Days
• US Class Current: 345/173
• CPC Class Codes: G06F 1/32 Means for saving power
• CPC Class Codes: G06F 3/04166 Details of scanning methods, e.g. sampling time, grouping of sub areas or time sharing with display driving Synchronisation with the driving of the display or the backlighting unit to avoid interferences generated internally G06F3/04184
• CPC Class Codes: G06F 3/047 using sets of wires, e.g. crossed wires

Abstract

An electronic analysis circuit of a multicontact passive-matrix tactile sensor including an electrical supply mechanism powering one of two axes of the matrix, and a mechanism detecting electrical characteristics along the other axis of the matrix, at intersections between the two axes. The supply axis and the detection axis are alternated. A multicontact passive-matrix tactile sensor includes an electrical supply mechanism powering one of the two axes of the matrix, a mechanism detecting electrical characteristics along the other axis of the matrix, at the intersections between the two axes, and such an electronic circuit.

Claims

1-9. -9. (canceled)

10. An analyzer electronic circuit of a passive-matrix multicontact tactile sensor comprising:

means for energization of one of two axes of the matrix; and

means for detecting electrical characteristics on the other axis of the matrix at intersections between the two axes,

wherein the energization axis and the detection axis are alternated.

11. An analyzer electronic circuit as claimed in claim 10, wherein the electrical characteristic measured is resistance.

12. An analyzer electronic circuit as claimed in claim 10, wherein the electrical characteristic measured is capacitance.

13. An analyzer electronic circuit as claimed claim 10, wherein the energization axis/detection axis alternation is periodic.

14. An analyzer electronic circuit as claimed in claim 10, wherein the energization axis/detection axis alternation is conditioned by detection of an artifact.

15. An analyzer electronic circuit as claimed in claim 10, wherein the energization axis/detection axis alternation is conditioned by reception of a control signal.

16. An analyzer electronic circuit as claimed in claim 10, that controls the sensor during a scanning phase by energizing successive tracks of one of networks and detecting a response on each of the tracks of a second network.

17. An analyzer electronic circuit as claimed in claim 10, wherein the alternation of the energization axis and the detection axis corresponds to an alternation between a scanning phase with columns as the energization axis and rows as the detection axis and a scanning phase with the rows as the energization axis and the columns as the detection axis

18. A passive-matrix multicontact tactile sensor comprising:

means for energization of one of two axes of the matrix;

means for detecting electrical characteristics on the other axis of the matrix at intersections between the two axes; and

an electronic circuit as claimed in claim 10.