JPS5785141A - Log data obtaining device - Google Patents
Log data obtaining deviceInfo
- Publication number
- JPS5785141A JPS5785141A JP16159780A JP16159780A JPS5785141A JP S5785141 A JPS5785141 A JP S5785141A JP 16159780 A JP16159780 A JP 16159780A JP 16159780 A JP16159780 A JP 16159780A JP S5785141 A JPS5785141 A JP S5785141A
- Authority
- JP
- Japan
- Prior art keywords
- data
- log
- obtaining device
- log data
- bit row
- 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.)
- Granted
Links
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T1/00—General purpose image data processing
- G06T1/0007—Image acquisition
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Information Retrieval, Db Structures And Fs Structures Therefor (AREA)
- Image Processing (AREA)
Abstract
PURPOSE:To reduce the storage capacity, by minimizing the obtainment of the log quantity of an after-image log data and a before-image log data by use of an optimum differential bit row generator. CONSTITUTION:Block data before updating and after updating, which have been inputted to data input terminals 27, 28, respectively are inputted to a differential detector 29, corresponding to each other. In the detector 29, corresponding data of both the data are collated at every byte, and a differential bit row is outputted to an optimum differential bit row generator 30. The generator 30 generates an optimum differential bit row. In a BI (before image) log data obtaining device 31 and an AI (after image) log data obtaining device 32, the block data inputted to the input terminals 27, 28, and the optimum differential bit row generated by the generator 30 are all synchronized by a tag signal, and a BI log data and an AI log data are fetched simultaneously from the obtaining device 31 and the obtaining device 32, respectively. Since these log quantities are obtained from the optimum differential bit row in this way, the log quantity is minimized.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16159780A JPS607814B2 (en) | 1980-11-17 | 1980-11-17 | Log data acquisition device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16159780A JPS607814B2 (en) | 1980-11-17 | 1980-11-17 | Log data acquisition device |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5785141A true JPS5785141A (en) | 1982-05-27 |
JPS607814B2 JPS607814B2 (en) | 1985-02-27 |
Family
ID=15738162
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP16159780A Expired JPS607814B2 (en) | 1980-11-17 | 1980-11-17 | Log data acquisition device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS607814B2 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61193241A (en) * | 1985-02-21 | 1986-08-27 | Hitachi Ltd | Updated career recording |
US5675727A (en) * | 1994-05-23 | 1997-10-07 | Nec Corporation | Difference recording apparatus having a processing unit, recording unit, log update section, and log comparator using a classification key in a log of input data |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP6921342B1 (en) * | 2020-03-30 | 2021-08-18 | 三菱電機株式会社 | Control device and logging method |
-
1980
- 1980-11-17 JP JP16159780A patent/JPS607814B2/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61193241A (en) * | 1985-02-21 | 1986-08-27 | Hitachi Ltd | Updated career recording |
US5675727A (en) * | 1994-05-23 | 1997-10-07 | Nec Corporation | Difference recording apparatus having a processing unit, recording unit, log update section, and log comparator using a classification key in a log of input data |
Also Published As
Publication number | Publication date |
---|---|
JPS607814B2 (en) | 1985-02-27 |
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