JPS6410358A - Data transfer control system - Google Patents

Data transfer control system

Info

Publication number
JPS6410358A
JPS6410358A JP62165328A JP16532887A JPS6410358A JP S6410358 A JPS6410358 A JP S6410358A JP 62165328 A JP62165328 A JP 62165328A JP 16532887 A JP16532887 A JP 16532887A JP S6410358 A JPS6410358 A JP S6410358A
Authority
JP
Japan
Prior art keywords
storage section
management information
area
entry
real data
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
Application number
JP62165328A
Other languages
Japanese (ja)
Other versions
JP2718679B2 (en
Inventor
Moriji Sugimoto
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP62165328A priority Critical patent/JP2718679B2/en
Publication of JPS6410358A publication Critical patent/JPS6410358A/en
Application granted granted Critical
Publication of JP2718679B2 publication Critical patent/JP2718679B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Abstract

PURPOSE:To contrive the reduction of a direct access to an external storage section not through an intermediate storage section by increasing the number of management information stored in the intermediate storage section more than the number of real data corresponding to the information stored in said storage section. CONSTITUTION:When a write instruction is given from a central processing section 1, an intermediate storage section 17 is retrieved by a processor 7. When an entry corresponding to the retrieval condition exists, the record management information and the real data corresponding to the entry among the record management information of a 1st storage area 17a and the real data in a 2nd storage area 17b are written in an external storage section 2 by the processor 7. When the corresponding entry does not exist, the external storage section 2 is accessed directly by the central processing section 1. Since the number of management information stored in the area 17a is controlled more than the number of real records stored in an area 17c, the probability of the required management information existing in the area 17a is increased and the number of times of the direct access is decreased.
JP62165328A 1987-07-03 1987-07-03 Data transfer control device Expired - Lifetime JP2718679B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62165328A JP2718679B2 (en) 1987-07-03 1987-07-03 Data transfer control device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62165328A JP2718679B2 (en) 1987-07-03 1987-07-03 Data transfer control device

Publications (2)

Publication Number Publication Date
JPS6410358A true JPS6410358A (en) 1989-01-13
JP2718679B2 JP2718679B2 (en) 1998-02-25

Family

ID=15810245

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62165328A Expired - Lifetime JP2718679B2 (en) 1987-07-03 1987-07-03 Data transfer control device

Country Status (1)

Country Link
JP (1) JP2718679B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5841598A (en) * 1994-10-28 1998-11-24 Olympus Optical Co., Ltd. Information recording/reproducing apparatus and data processing method

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6122162A (en) * 1984-07-06 1986-01-30 松下冷機株式会社 Outdoor-side heat exchanger for heat pump type air conditioner
JPS61229141A (en) * 1985-04-04 1986-10-13 Mitsubishi Electric Corp System for controlling disk cache device
JPS6222162A (en) * 1985-07-23 1987-01-30 Alps Electric Co Ltd Disk cash control system

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6122162A (en) * 1984-07-06 1986-01-30 松下冷機株式会社 Outdoor-side heat exchanger for heat pump type air conditioner
JPS61229141A (en) * 1985-04-04 1986-10-13 Mitsubishi Electric Corp System for controlling disk cache device
JPS6222162A (en) * 1985-07-23 1987-01-30 Alps Electric Co Ltd Disk cash control system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5841598A (en) * 1994-10-28 1998-11-24 Olympus Optical Co., Ltd. Information recording/reproducing apparatus and data processing method

Also Published As

Publication number Publication date
JP2718679B2 (en) 1998-02-25

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