公开(公告)号：US3271589A

公开(公告)日：1966-09-06

申请号：US32882363

申请日：1963-12-09

Applicant: IBM

Inventor： BAXTER DUANE W ,  FELTON BRUCE C ,  ANTON WERNER ,  WINNARD JAMES R

IPC: H03K17/58

CPC classification number: H03K17/58

公开(公告)号：US3492498A

公开(公告)日：1970-01-27

申请号：US3492498D

申请日：1967-06-22

Applicant: IBM

Inventor： BARTZ MAURICE R ,  BAXTER DUANE W ,  GARRY GERALD A

IPC: G06K9/38 ,  G11C27/02 ,  H03K5/08 ,  H03K5/1532 ,  G11C27/00

CPC classification number: H03K5/088 ,  G06K9/38 ,  G06K2209/01 ,  G11C27/024 ,  H03K5/084 ,  H03K5/1532

公开(公告)号：US3534334A

公开(公告)日：1970-10-13

申请号：US3534334D

申请日：1967-06-20

Applicant: IBM

Inventor： BARTZ MAURICE R ,  BAXTER DUANE W ,  GARRY GERALD A ,  JOHNSTON DAVID L ,  STYCZINSKI DAVID A

IPC: G06K9/38 ,  G11C27/02 ,  H03K5/08 ,  H03K5/1532 ,  G06K9/02

CPC classification number: H03K5/088 ,  G06K9/38 ,  G06K2209/01 ,  G11C27/024 ,  H03K5/084 ,  H03K5/1532

公开(公告)号：US3217304A

公开(公告)日：1965-11-09

申请号：US12065261

申请日：1961-06-29

Applicant: IBM

Inventor： BAXTER DUANE W ,  ANIS DAVID W

CPC classification number: G11B5/012

公开(公告)号：US3515877A

公开(公告)日：1970-06-02

申请号：US3515877D

申请日：1965-12-13

Applicant: JOHN W MASSING ,  IBM ,  CLAUDE B SMOYER

Inventor： BAXTER DUANE W ,  HEIDRICH PAUL F ,  MASSING JOHN M

IPC: G03F9/00 ,  G05D3/14 ,  G05D3/20 ,  H01L21/68 ,  G05B1/01

CPC classification number: G03F9/70 ,  G05D3/14 ,  G05D3/20 ,  H01L21/681

公开(公告)号：US3428953A

公开(公告)日：1969-02-18

申请号：US3428953D

申请日：1965-07-14

Applicant: IBM

Inventor： BAXTER DUANE W ,  FELTON BRUCE C ,  HILL HAROLD W ,  HOFFMAN HARRY S JR

IPC: G11C17/04 ,  G11B9/06

CPC classification number: G11C17/04

公开(公告)号：CA804780A

公开(公告)日：1969-01-21

申请号：CA804780D

Applicant: IBM

Inventor： FELTON BRUCE C ,  HOFFMAN HARRY S JR ,  BAXTER DUANE W ,  HILL HAROLD W

公开(公告)号：CA772773A

公开(公告)日：1967-11-28

申请号：CA772773D

Applicant: IBM

Inventor： WERNER ANTON ,  WINNARD JAMES R ,  BAXTER DUANE W ,  FELTON BRUCE C

公开(公告)号：DE3583110D1

公开(公告)日：1991-07-11

申请号：DE3583110

申请日：1985-10-22

Applicant: IBM

Inventor： BALTADEN GLENN D ,  BAXTER DUANE W ,  DAVIE NEIL R

IPC: G11B7/00 ,  G11B7/0045 ,  G11B7/125 ,  G11B7/13 ,  G11B19/04 ,  G11B27/36

Abstract: @ An optical file system in which a command to store data results in a write operation in the next available storage position. A single optical path is used for both reading and writing. By dividing the detector (10) in two equal parts (10A, 10B) along the direction of relative movement, it is possible to determine whether data has been written at a position which is in advance of the center of the area viewed by the detector. The write operation is conditioned on the output of the first part of the detector. Since the first part of the detector gives advance warning on the status of the oncoming data position, it is possible to switch from reading to writing without the requirement for a wasted revolution or wasted space. By dividing the signal resulting from a change of reflectance sensed during a write operation by a measure of the intensity of the write laser a read signal free of the write modulation is obtained.

公开(公告)号：FR2357010A1

公开(公告)日：1978-01-27

申请号：FR7716789

申请日：1977-05-25

Applicant: IBM

Inventor： BAXTER DUANE W ,  SHIPWAY RICHARD E

IPC: G01B11/24 ,  G01N21/88 ,  G01N21/93 ,  G01N21/956 ,  G01R31/308 ,  G06T1/00 ,  H05B39/08 ,  G06K11/00

Abstract: Successive areas of a high-resolution object image are compared with corresponding areas of a low-resolution master pattern to produce signals representing the quality of the object. Comparison is effected by detecting which of a set of features occurs in each area of the object image, detecting which feature of the same set occurs in a larger area of the master pattern, and determining whether these two features are the same.