JPS642157A - Data transfer abnormality detector for data recorder - Google Patents
Data transfer abnormality detector for data recorderInfo
- Publication number
- JPS642157A JPS642157A JP62158249A JP15824987A JPS642157A JP S642157 A JPS642157 A JP S642157A JP 62158249 A JP62158249 A JP 62158249A JP 15824987 A JP15824987 A JP 15824987A JP S642157 A JPS642157 A JP S642157A
- Authority
- JP
- Japan
- Prior art keywords
- clock
- reference clock
- response
- timing
- counting
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Signal Processing For Digital Recording And Reproducing (AREA)
Abstract
PURPOSE: To immediately detect abnormality when a failure of a timing occurs in course of transferring data by counting and comparing a corrected reference clock and a corrected response clock made by correcting a reference clock and a response clock to be varied equivalently with an identical timing.
CONSTITUTION: The titled detector is provided with a timing reforming part 3 generating the reference clock which measures the time until the response clock is returned for the reference clock, corrects that time difference and of which alteration timing complying with each other is regulated within a fixed time, the equivalent correction reference clock, the response clock and the equivalent response clock, a counting part 4 respectively counting the reformed reference clock and the reformed response clock and outputting the respective discrete values and a relative collation decision part 5 relatively collating the set of discrete values with the optional number of bits among the corresponding bits, successively deciding the coincidence or the discrepancy of them in a data transfer cycle and generating an abnormal signal when the discrepancy occurs. Thus the time delay from the occurrence of the abnormality to the detection can be shortened.
COPYRIGHT: (C)1989,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62158249A JPS642157A (en) | 1987-06-25 | 1987-06-25 | Data transfer abnormality detector for data recorder |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62158249A JPS642157A (en) | 1987-06-25 | 1987-06-25 | Data transfer abnormality detector for data recorder |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH012157A JPH012157A (en) | 1989-01-06 |
JPS642157A true JPS642157A (en) | 1989-01-06 |
Family
ID=15667508
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62158249A Pending JPS642157A (en) | 1987-06-25 | 1987-06-25 | Data transfer abnormality detector for data recorder |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS642157A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH038086A (en) * | 1989-06-06 | 1991-01-16 | Pioneer Electron Corp | Still picture signal reproducing device |
EP0986061A1 (en) * | 1998-09-11 | 2000-03-15 | Alps Electric Co., Ltd. | Optical disk drive |
US6972011B2 (en) | 2000-05-23 | 2005-12-06 | Toyo Eizai Kabushiki Kaisha | Ultra-thin absorbing sheet body, disposable absorbent article provided with ultra-thin absorbing sheet body and production device for ultra-thin absorbing sheet body |
-
1987
- 1987-06-25 JP JP62158249A patent/JPS642157A/en active Pending
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH038086A (en) * | 1989-06-06 | 1991-01-16 | Pioneer Electron Corp | Still picture signal reproducing device |
EP0986061A1 (en) * | 1998-09-11 | 2000-03-15 | Alps Electric Co., Ltd. | Optical disk drive |
US6363042B1 (en) | 1998-09-11 | 2002-03-26 | Alps Electric Co., Ltd. | Optical disk drive having means for preventing inner reference clock signal in PLL circuit from being disturbed when defective portion is read |
US6972011B2 (en) | 2000-05-23 | 2005-12-06 | Toyo Eizai Kabushiki Kaisha | Ultra-thin absorbing sheet body, disposable absorbent article provided with ultra-thin absorbing sheet body and production device for ultra-thin absorbing sheet body |
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