公开(公告)号：JPS6148071A

公开(公告)日：1986-03-08

申请号：JP13926885

申请日：1985-06-27

Applicant: Ibm

Inventor： COOPER JOHN FREDERICK ,  KIRKPATRICK EDWARD SCOTT ,  LINSKER RALPH

IPC: G06F1/18 ,  G06F17/11 ,  G06F17/50 ,  G06F19/00 ,  H05K3/00

CPC classification number: G06F17/5077 ,  H05K3/0005

公开(公告)号：DE3587055T2

公开(公告)日：1993-08-12

申请号：DE3587055

申请日：1985-07-23

Applicant: IBM

Inventor： COOPER JOHN FREDERICK ,  KIRKPATRICK EDWARD SCOTT ,  LINSKER RALPH

IPC: G06F1/18 ,  G06F17/11 ,  G06F17/50 ,  G06F19/00 ,  H05K3/00 ,  G06F15/60

Abstract: A method for distributing wire load among the layers of a multilayer interconnection package such that in each region of the package, the wire load is balanced among all layers and such that specified subsets of two-pin connections may be constrained to lie within the same layer.More specifically a method is disclosed for distributing connections within the layers of a multilayer circuit board, the method comprising the steps of: a) reading connection data relating to the location of pins on the interconnection board at which the connections terminate; b) defining a connection type for each connection based on the locations of the pins of said connection; and c) distributing connections of one or more connection types among the layers of the interconnection board such that for each connection type, the difference in the number of connections of that type distributed to each of the several layers is less than or equal to 1.

公开(公告)号：DE69622077D1

公开(公告)日：2002-08-08

申请号：DE69622077

申请日：1996-02-16

Applicant: IBM

Inventor： GEORGIOU CHRISTOS JOHN ,  KIRKPATRICK EDWARD SCOTT

IPC: G06F1/32 ,  G11B19/00 ,  G11B19/20 ,  G06F3/06

Abstract: A system and method for optimizing power consumption by a disk drive unit. The system and method monitor and analyze historical use data and calculate a predicted inactivity duration. The predicted inactivity duration is used to power-down the rotational speed of the drive to the first of one or more intermediate rotational speeds. Continued inactivity will result in further speed reduction until the drive is ultimately powered off. The drive increases rotational speed on demand.

公开(公告)号：DE69622077T2

公开(公告)日：2003-03-13

申请号：DE69622077

申请日：1996-02-16

Applicant: IBM

Inventor： GEORGIOU CHRISTOS JOHN ,  KIRKPATRICK EDWARD SCOTT

IPC: G06F1/32 ,  G11B19/00 ,  G11B19/20 ,  G06F3/06

Abstract: A system and method for optimizing power consumption by a disk drive unit. The system and method monitor and analyze historical use data and calculate a predicted inactivity duration. The predicted inactivity duration is used to power-down the rotational speed of the drive to the first of one or more intermediate rotational speeds. Continued inactivity will result in further speed reduction until the drive is ultimately powered off. The drive increases rotational speed on demand.

公开(公告)号：DE3587055D1

公开(公告)日：1993-03-18

申请号：DE3587055

申请日：1985-07-23

Applicant: IBM

Inventor： COOPER JOHN FREDERICK ,  KIRKPATRICK EDWARD SCOTT ,  LINSKER RALPH

IPC: G06F1/18 ,  G06F17/11 ,  G06F17/50 ,  G06F19/00 ,  H05K3/00 ,  G06F15/60

Abstract: A method for distributing wire load among the layers of a multilayer interconnection package such that in each region of the package, the wire load is balanced among all layers and such that specified subsets of two-pin connections may be constrained to lie within the same layer.More specifically a method is disclosed for distributing connections within the layers of a multilayer circuit board, the method comprising the steps of: a) reading connection data relating to the location of pins on the interconnection board at which the connections terminate; b) defining a connection type for each connection based on the locations of the pins of said connection; and c) distributing connections of one or more connection types among the layers of the interconnection board such that for each connection type, the difference in the number of connections of that type distributed to each of the several layers is less than or equal to 1.

公开(公告)号：DE3674981D1

公开(公告)日：1990-11-22

申请号：DE3674981

申请日：1986-06-21

Applicant: IBM

Inventor： KIRKPATRICK EDWARD SCOTT ,  KRONSTADT ERIC PAUL ,  MONTOYE ROBERT KEVIN ,  WILCKE WINFRIED WOLFGANG

IPC: H03K17/00 ,  G01R31/28 ,  G01R31/3185 ,  G06F11/00 ,  G06F11/267 ,  G06F11/26

公开(公告)号：DE3279352D1

公开(公告)日：1989-02-16

申请号：DE3279352

申请日：1982-09-16

Applicant: IBM

Inventor： GELATT CHARLES DANIEL ,  KIRKPATRICK EDWARD SCOTT

IPC: H01L21/822 ,  G06F17/50 ,  H01L21/82 ,  H01L27/04 ,  G06F15/20

Abstract: The overall arrangement of a large number of discrete objects may be optimized with relation to the function of or the space occupied by the arrangement by establishing a suitability measure, or score, for each configuration of the arrangement, in relation to the function of or volume occupied, generating random local changes in the arrangement, scoring the effect of the individual changes and subjecting all objects in the arrangement to a random series of incremental changes whose outcome is on average predictable. The procedure lends itself to computer simulation. It may be applied to sequencing and scheduling problems, bin packing types of problems and in complex design problems such as semiconductor chip placement, wiring network routing and logic partitioning.