JPS5515566A - Read system for doubled file - Google Patents
Read system for doubled fileInfo
- Publication number
- JPS5515566A JPS5515566A JP8853778A JP8853778A JPS5515566A JP S5515566 A JPS5515566 A JP S5515566A JP 8853778 A JP8853778 A JP 8853778A JP 8853778 A JP8853778 A JP 8853778A JP S5515566 A JPS5515566 A JP S5515566A
- Authority
- JP
- Japan
- Prior art keywords
- read
- counter
- data
- value
- doubled
- 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
Abstract
PURPOSE: To obtain rapidly file data by requesting separate mass storage units to read out data from doubled file of both the storage units and by using data read out first.
CONSTITUTION: On receiving a read request from doubled files, read method 1 sends out read instruction in the order of a queue to set initial value 1 to additional-number counter 11 and then transfers the value to read additional-number counters 12 and 13 by opening gate circuit 31. Once a read from the 1st mass storage units ends, gate 32 is made open to make a comparison between values of counters 11 and 12 by comparator circuit 21 and when the both are equal each other, value 1 from real-number generating circuit 22 is added 23 to that of counter 11 to stored the result in counter again. Method 1 transfers the update number of counter 11 to counter 12 and sends a read request to the 1st memory unit. After a read from the 2nd memory unit ends, the comparator circuit makes a comparison between values of counters 11 and 13 and when the value of counter 13 is less, this data is ignored because it has been read in yet, thereby sending a read request for the initial data of the next queue.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8853778A JPS5515566A (en) | 1978-07-20 | 1978-07-20 | Read system for doubled file |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8853778A JPS5515566A (en) | 1978-07-20 | 1978-07-20 | Read system for doubled file |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5515566A true JPS5515566A (en) | 1980-02-02 |
Family
ID=13945582
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP8853778A Pending JPS5515566A (en) | 1978-07-20 | 1978-07-20 | Read system for doubled file |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5515566A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS55115152A (en) * | 1979-02-26 | 1980-09-04 | Nec Corp | Double recording data readout system for magnetic disc unit |
JPH02262490A (en) * | 1989-04-03 | 1990-10-25 | Nippon Solid Co Ltd | Method for mooring underwater floating structure |
-
1978
- 1978-07-20 JP JP8853778A patent/JPS5515566A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS55115152A (en) * | 1979-02-26 | 1980-09-04 | Nec Corp | Double recording data readout system for magnetic disc unit |
JPH02262490A (en) * | 1989-04-03 | 1990-10-25 | Nippon Solid Co Ltd | Method for mooring underwater floating structure |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JPS5311547A (en) | Program call order system | |
JPS5515566A (en) | Read system for doubled file | |
JPS5337345A (en) | Collecting and treating system for digital data | |
JPS54161854A (en) | Input/output control system for information processor | |
JPS54132142A (en) | Input/output device identifying system for electronic computer system | |
JPS56100586A (en) | Ipl system in decentralized processing electronic exchanger | |
JPS5545169A (en) | Memory unit | |
JPS533140A (en) | Data transfer system | |
JPS55118170A (en) | Memory access device | |
JPS52110537A (en) | Multiple data processing system | |
JPS5733472A (en) | Memory access control system | |
ES8103407A1 (en) | Data processing system | |
Avram | LSP and library network services in the future. | |
JPS5492118A (en) | Static picture file device | |
JPS54148453A (en) | Equal-type duplicate data control system | |
ZECH | Optical mass memory investigations. Volume 3: Considerations for the development of a DIGIMEM archival optical mass storage system[Final Technical Report, 14 May 1976- 29 Jun. 1977] | |
JPS53128912A (en) | Data transmission system | |
JPS5617424A (en) | Data transfer system | |
JPS5687875A (en) | System for preparing simulation model | |
JPS54122046A (en) | Address match and memory protection system | |
JPS5437644A (en) | Information processing system | |
JPS51144137A (en) | Input/output data control unit | |
JPS5541555A (en) | Data processing unit | |
JPS53105950A (en) | Data process system | |
RUZHENTSEV | Organization of program packets for small digital computers(Small digital computer program packet organization for central processor productivity and use coefficient improvement, discussing graph-algorithm language for program splicing) |