Title:
レーザで切断できるヒューズを用いて、時計モジュールのパルス繰返し周波数を調整する方法
Document Type and Number:
Japanese Patent JP4805439
Kind Code:
B2
Abstract:
A method for adjusting the rate of a horological module, said horological module including a printed circuit (1) on which are mounted in particular a quartz (10) and an integrated circuit (20) including an oscillator (21) driven by the quartz (10), a frequency divider circuit (22) with several stages (22.1 to 22.15), an adjustment circuit (23) allowing the introduction of a correction factor of the division ratio of said frequency divider circuit (22), and a memory circuit (24) containing data (N) representing said correction factor. The adjustment method according to the present invention uses a laser device to allow said data (N) representing the correction factor to be coded by the selective destruction of fuses (F1, F2; F.1 to F.6; F.1* to F.6*) forming memory elements of said memory circuit (24).
Inventors:
Gunter Moisberger
Nicholas Janet
Rudolf Bukmann
Nicholas Janet
Rudolf Bukmann
Application Number:
JP31495399A
Publication Date:
November 02, 2011
Filing Date:
November 05, 1999
Export Citation:
Assignee:
MM Microelectronic-Marine S.A.R.
International Classes:
G04D7/00; G04G3/02
Domestic Patent References:
| JP62109461U | ||||
| JP58054705A | ||||
| JP9055625A | ||||
| JP4029224U | ||||
| JP7022477A | ||||
| JP2000098066A |
Attorney, Agent or Firm:
Masaki Yamakawa