Title:
CHARGE-TO-DIGITAL TIMER
Document Type and Number:
WIPO Patent Application WO/2013/098359
Kind Code:
A3
Abstract:
The charge-to-digital timer apparatus and method disclosed herein estimates the elapsed time between two signals, e.g., a start signal and a stop signal. To that end, at least a capacitive load is charged with a known current to generate a load voltage. Subsequently, a first voltage is ramped in a plurality of discrete voltage steps associated with a plurality of known capacitances until the ramped voltage satisfies a predetermined criterion relative to a second voltage. The elapsed time is determined from the discrete voltage steps, one of the first and second voltages, the known current, and the known capacitive load.
More Like This:
| JPS5510571 | ELECTRONIC WATCH WITH COUNTER |
| JPS6019746 | [Title of the device] A cane with a talking watch |
Inventors:
HELIOE PETRI (FI)
KORPI PETRI (FI)
VAEAENAENEN PAAVO (FI)
VILHONEN SAMI TAPANI (FI)
MIKKOLA NIKO (FI)
KORPI PETRI (FI)
VAEAENAENEN PAAVO (FI)
VILHONEN SAMI TAPANI (FI)
MIKKOLA NIKO (FI)
Application Number:
PCT/EP2012/076996
Publication Date:
August 22, 2013
Filing Date:
December 27, 2012
Export Citation:
Assignee:
ST ERICSSON SA (CH)
International Classes:
G04F10/00
Foreign References:
| DE3834938C1 | 1989-12-07 | |||
| EP2388923A1 | 2011-11-23 | |||
| FR2224759A1 | 1974-10-31 |
Attorney, Agent or Firm:
STRÖM & GULLIKSSON AB (Lund, SE)
Download PDF: