Invention Grant
US08415960B2 Capacitance sensing apparatus 有权
电容感测装置

  • Patent Title: Capacitance sensing apparatus
  • Patent Title (中): 电容感测装置
  • Application No.: US12516063
    Application Date: 2007-11-26
  • Publication No.: US08415960B2
    Publication Date: 2013-04-09
  • Inventor: Roger John Hazelden
  • Applicant: Roger John Hazelden
  • Applicant Address: GB West Midlands
  • Assignee: TRW Limited
  • Current Assignee: TRW Limited
  • Current Assignee Address: GB West Midlands
  • Agency: MacMillan, Sobanski & Todd, LLC
  • Priority: GB0623432.2 20061124
  • International Application: PCT/GB2007/004503 WO 20071126
  • International Announcement: WO2008/062217 WO 20080529
  • Main IPC: G01R27/26
  • IPC: G01R27/26
Capacitance sensing apparatus
Abstract:
A capacitance sensing apparatus for use in a position sensing apparatus, comprising a first set of electrodes and a second set of electrodes and a capacitance sensing circuit arranged to determine, in use in a normal operating mode, the capacitance between each pairing of electrodes comprising one from the first set and one from the second set, in which the apparatus is further provided with at least one group switch arranged to selectively electrically connect together groups of the electrodes within the sets of electrodes, in which, in use in a low resolution mode of the apparatus the or each group switch connects together the groups of electrodes and the capacitance sensing circuit is arranged to determine the capacitance between the each pairing of groups of electrodes in one set and the electrodes or groups of electrodes of the other set. Typically, the apparatus is used in conjunction with a display to form a touch-sensitive display. It may be used in a position sensing apparatus for determining the proximity and position of an object to the apparatus, and is particularly applicable to use in a console of a motor vehicle of the type having the console centrally between two passenger seats.
Public/Granted literature
Information query
Patent Agency Ranking
0/0