公开(公告)号：FR2284868A1

公开(公告)日：1976-04-09

申请号：FR7431439

申请日：1974-09-11

Applicant: IBM FRANCE

Inventor： BEAUDOIN PIERRE L ,  DEBORD PIERRE

IPC: G01J1/46 ,  G01R29/24 ,  G06K7/10

Abstract: The proposed method of measuring the quantity of light received during a given time (T) by a photosensitive cell of the charge memory type involves, for each measurement operation, charging the cell to a reference level, and after an interval of time (T), measuring the loss of charge from the cell. This may be done by recharging the cell to the reference level and measuring the charging current. The above process may be applied sequentially to a group of photocells of the charge memory type.

公开(公告)号：FR2396463A1

公开(公告)日：1979-01-26

申请号：FR7720730

申请日：1977-06-30

Applicant: IBM FRANCE

Inventor： DEBORD PIERRE ,  MARIJON JEAN-LOUIS

IPC: H03M1/10 ,  H03F1/30 ,  H03F3/00 ,  H03F3/38 ,  H03M1/00 ,  H03K13/02