EP 0253227 B1 19891129 - DEVICE FOR PROGRAMMING A NON VOLATILE MEMORY OF A TIME PIECE
Title (en)
DEVICE FOR PROGRAMMING A NON VOLATILE MEMORY OF A TIME PIECE
Publication
Application
Priority
CH 277386 A 19860710
Abstract (en)
[origin: US4763309A] This programming arrangement for a non-volatile memory incorporated in the inner circuit of a timepiece for adjusting the frequency of the time base thereof includes a support provided with a connector to be plugged in in place of the energy cell. The rate of division of the frequency divider is adjusted by the introduction into the memory of a number k representative of the frequency difference between the time base frequency and a standard frequency. To effect this the arrangement comprises an electronic circuit external to the timepiece and which is coupled thereto by the connector. The electronic circuit introduces the number k into certain predetermined stages of the divider. When such number k is thus introduced the state of such stages is blocked by the inner circuit of the timepiece such state then being transferred into the non-volatile memory.
IPC 1-7
IPC 8 full level
G04C 3/14 (2006.01); G04D 7/00 (2006.01); G04G 3/02 (2006.01)
CPC (source: EP US)
G04D 7/003 (2013.01 - EP US); G04G 3/022 (2013.01 - EP US)
Citation (examination)
US 4147022 A 19790403 - ICHIKAWA SINGO
Designated contracting state (EPC)
DE FR GB
DOCDB simple family (publication)
EP 0253227 A1 19880120; EP 0253227 B1 19891129; CH 664868G A3 19880415; DE 3761065 D1 19900104; HK 2295 A 19950113; JP 2519464 B2 19960731; JP S6329291 A 19880206; US 4763309 A 19880809
DOCDB simple family (application)
EP 87109566 A 19870703; CH 277386 A 19860710; DE 3761065 T 19870703; HK 2295 A 19950105; JP 17131587 A 19870710; US 7150387 A 19870709