EP 2318889 A1 20110511 - TIME-MEASUREMENT DEVICE FOR APPLICATIONS WITHOUT POWER SOURCE
Title (en)
TIME-MEASUREMENT DEVICE FOR APPLICATIONS WITHOUT POWER SOURCE
Title (de)
ZEITMESSVORRICHTUNG FÜR ANWENDUNGEN OHNE STROMQUELLE
Title (fr)
DISPOSITIF DE MESURE DE TEMPS POUR DES APPLICATIONS SANS SOURCE D'ÉNERGIE
Publication
Application
Priority
- IB 2009053175 W 20090722
- EP 08160959 A 20080723
- EP 09786666 A 20090722
Abstract (en)
[origin: WO2010010519A1] The present invention relates to a time-measurement device comprising a timing-reference circuit on a single substrate or on multiple substrates; a source of radioactive radiation on or in the substrate; a counter for radioactive decay events on or in the substrate. A control circuit on the substrate is configured to control the integration time of the counter using the timing reference, receive the count signal from the counter, and calculate a time difference between a momentaneous time and a reference time using the count signal, the value of the integration time span, the half life, and a known decay rate of the at least one radioisotope at the reference time.
IPC 8 full level
G04F 13/00 (2006.01)
CPC (source: EP)
G04F 5/16 (2013.01)
Citation (search report)
See references of WO 2010010519A1
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK SM TR
Designated extension state (EPC)
AL BA RS
DOCDB simple family (publication)
WO 2010010519 A1 20100128; CN 102099753 A 20110615; EP 2318889 A1 20110511
DOCDB simple family (application)
IB 2009053175 W 20090722; CN 200980128326 A 20090722; EP 09786666 A 20090722