公开(公告)号：DE3274164D1

公开(公告)日：1986-12-11

申请号：DE3274164

申请日：1982-12-23

Applicant: IBM

Inventor： CHEVILLAT PIERRE DR ,  MAIWALD DIETRICH DR

IPC: G06F7/493 ,  G06F7/52 ,  G06F7/527 ,  G06F7/535

Abstract: A method and apparatus are disclosed which, for obtaining the quotient of division operations in a data processing apparatus, generate as an auxiliary value the inverse square root g of the divisor w. The auxiliary value g is then multiplied by the divident v, and the intermediate result again multiplied by the auxiliary value g. An improvement in operation of the data processing apparatus is obtained despite introduction of the auxiliary value because the range covered by the auxiliary value is significantly smaller than that of the direct inverse of the divisor. A preferred application is the area of signal processing in communications.

公开(公告)号：DE3174130D1

公开(公告)日：1986-04-24

申请号：DE3174130

申请日：1981-08-19

Applicant: IBM

Inventor： CHEVILLAT PIERRE DR ,  KAESER HANSPETER ,  MAIWALD DIETRICH DR ,  UNGERBOECK GOTTFRIED DR

IPC: G06F9/30 ,  G06F7/00 ,  G06F9/315 ,  G06F15/78 ,  G06F17/10 ,  G06F15/06

公开(公告)号：DE3066889D1

公开(公告)日：1984-04-12

申请号：DE3066889

申请日：1980-12-23

Applicant: IBM

Inventor： UNGERBOECK GOTTFRIED DR ,  CHEVILLAT PIERRE DR

IPC: H04L1/00 ,  H04L5/16 ,  H04L27/34 ,  H04L27/38 ,  H04L27/00 ,  H04L1/10