公开(公告)号：JP2004127507A

公开(公告)日：2004-04-22

申请号：JP2003359480

申请日：2003-10-20

Applicant: Internatl Business Mach Corp ,  インターナショナル・ビジネス・マシーンズ・コーポレーションInternational Business Maschines Corporation

Inventor： CLARK ALAN ROBERT ,  HUTCHINS ROBERT ALLEN ,  JAQUETTE GLEN ALAN

IPC: G01M11/00 ,  G11B7/00 ,  G11B7/0037 ,  G11B7/004 ,  G11B7/0045 ,  G11B7/005 ,  G11B7/09 ,  G11B7/125 ,  G11B11/10 ,  G11B11/105 ,  G11B20/10 ,  G11B20/18 ,  G11B27/36

CPC classification number: G11B7/126 ,  G11B7/0037 ,  G11B7/0045 ,  G11B11/10595 ,  G11B20/1879 ,  G11B27/36

Abstract: PROBLEM TO BE SOLVED: To provide a method and a system for calibrating a multimode device in order to execute reading and/or writing on one of a plurality of writing modes.
SOLUTION: The process of reading data written on an information medium on one of a plurality of writing modes includes the step of setting the configuration of a correction circuit capable of being set to a configuration for measuring a parameter corresponding to one of the plurality of writing modes in order to execute measurement corresponding to the writing mode during a given correction cycle, and executing a plurality of measurements for the read data by using the correction circuit set to the configuration in order to measure one or a plurality of reading parameters simultaneously, and the step of optimizing the writing mode of the multimode device based on a selected measured value.
COPYRIGHT: (C)2004,JPO

公开(公告)号：JPH1064174A

公开(公告)日：1998-03-06

申请号：JP16245497

申请日：1997-06-19

Applicant: IBM

Inventor： CLARK ALAN ROBERT ,  HUTCHINS ROBERT ALLEN ,  JAQUETTE GLEN ALAN

IPC: G01M11/00 ,  G11B7/00 ,  G11B7/0037 ,  G11B7/004 ,  G11B7/0045 ,  G11B7/005 ,  G11B7/09 ,  G11B7/125 ,  G11B11/10 ,  G11B11/105 ,  G11B20/10 ,  G11B20/18 ,  G11B27/36 ,  G11B19/02

Abstract: PROBLEM TO BE SOLVED: To provide a calibrating device unified for operating by plural calibrating modes of a multimode information storage system for the purpose of calibrating an optical disk drive device, etc., by plural write modes. SOLUTION: An event processing circuit 306 and a measuring circuit 308 can be set in plural constitutions, each corresponding to different calibrating measurement of its own. Parameters of one or plural read data written in an optical disk by the optical disk drive device capable of operating in a specific write mode are measured by each individual formation at the same time. An effective measured value is selected for the purpose of verifying two different or the same two parameters in different verification by verification circuits 310 and 312. An average value of measured parameters is calculated from a totaling and counting part 304 by the calibrating device, and based on this average value, the multimode optical disk drive device under its present write mode is calibrated.

公开(公告)号：DE69022872D1

公开(公告)日：1995-11-16

申请号：DE69022872

申请日：1990-02-12

Applicant: IBM

Inventor： CLARK ALAN ROBERT ,  HIGHAM JOSEPH PAUL ,  HUGHES JAMES EDWARD ,  VALASHINAS JAMES WILLIAM

IPC: G06F15/16 ,  G06F13/38 ,  G06F13/40 ,  G06F15/173

Abstract: A bus-to-bus adapter (20) is provided for coupling the input/output bus of a first data processor (21) to the input/output bus of a second and different type of data processor (22). The adapter enables the transfer of data and messages from the first processor to the second processor and vice versa. The adapter includes a buffer storage unit (34) and control logic (39) for enabling multiple data buffers to be provided for enabling multiple independent data transfer operations to be performed in a concurrent manner. The control logic also includes a mechanism for allowing the reading out of data from a data buffer to begin before such data buffer has received all of its incoming data. The adapter further includes a programmable service time allocation mechanism for limiting message service time relative to data transfer service time and for providing different amounts of data transfer service time for different ones of the multiple data buffers.

公开(公告)号：DE69718716T2

公开(公告)日：2003-09-18

申请号：DE69718716

申请日：1997-06-11

Applicant: IBM

Inventor： CLARK ALAN ROBERT ,  HUTCHINS ROBERT ALLEN ,  JAQUETTE GLEN ALAN

IPC: G01M11/00 ,  G11B7/00 ,  G11B7/0037 ,  G11B7/004 ,  G11B7/0045 ,  G11B7/005 ,  G11B7/09 ,  G11B7/125 ,  G11B11/10 ,  G11B11/105 ,  G11B20/10 ,  G11B20/18 ,  G11B27/36

Abstract: An calibration apparatus operates in multiple calibration modes of a multi-mode information storage system such as an optical disk drive to calibrate the drive in the multiple write modes. An event processing and measurement circuit is configurable in multiple configurations that each correspond to a different calibration measurement. Each configuration concurrently measures one or more parameters of readback data written to an optical disk by the optical disk drive operating in a particular write mode. A qualification circuit selects valid measurements for two different parameters or for two different qualification of the same parameter. A summation circuit sums valid measurements of each parameter measured and counts the number of measurements summed for each parameter. The calibration apparatus calculates average values for the measured parameters from the sums and counts, and then calibrates the multi-mode optical disk drive for its current write mode based on the average values.

公开(公告)号：DE69718716D1

公开(公告)日：2003-03-06

申请号：DE69718716

申请日：1997-06-11

Applicant: IBM

Inventor： CLARK ALAN ROBERT ,  HUTCHINS ROBERT ALLEN ,  JAQUETTE GLEN ALAN

IPC: G01M11/00 ,  G11B7/00 ,  G11B7/0037 ,  G11B7/004 ,  G11B7/0045 ,  G11B7/005 ,  G11B7/09 ,  G11B7/125 ,  G11B11/10 ,  G11B11/105 ,  G11B20/10 ,  G11B20/18 ,  G11B27/36

Abstract: An calibration apparatus operates in multiple calibration modes of a multi-mode information storage system such as an optical disk drive to calibrate the drive in the multiple write modes. An event processing and measurement circuit is configurable in multiple configurations that each correspond to a different calibration measurement. Each configuration concurrently measures one or more parameters of readback data written to an optical disk by the optical disk drive operating in a particular write mode. A qualification circuit selects valid measurements for two different parameters or for two different qualification of the same parameter. A summation circuit sums valid measurements of each parameter measured and counts the number of measurements summed for each parameter. The calibration apparatus calculates average values for the measured parameters from the sums and counts, and then calibrates the multi-mode optical disk drive for its current write mode based on the average values.

公开(公告)号：DE69022872T2

公开(公告)日：1996-06-13

申请号：DE69022872

申请日：1990-02-12

Applicant: IBM

Inventor： CLARK ALAN ROBERT ,  HIGHAM JOSEPH PAUL ,  HUGHES JAMES EDWARD ,  VALASHINAS JAMES WILLIAM

IPC: G06F15/16 ,  G06F13/38 ,  G06F13/40 ,  G06F15/173

Abstract: A bus-to-bus adapter (20) is provided for coupling the input/output bus of a first data processor (21) to the input/output bus of a second and different type of data processor (22). The adapter enables the transfer of data and messages from the first processor to the second processor and vice versa. The adapter includes a buffer storage unit (34) and control logic (39) for enabling multiple data buffers to be provided for enabling multiple independent data transfer operations to be performed in a concurrent manner. The control logic also includes a mechanism for allowing the reading out of data from a data buffer to begin before such data buffer has received all of its incoming data. The adapter further includes a programmable service time allocation mechanism for limiting message service time relative to data transfer service time and for providing different amounts of data transfer service time for different ones of the multiple data buffers.