JPS5520578A - Data transfer device - Google Patents

Data transfer device

Info

Publication number
JPS5520578A
JPS5520578A JP9386578A JP9386578A JPS5520578A JP S5520578 A JPS5520578 A JP S5520578A JP 9386578 A JP9386578 A JP 9386578A JP 9386578 A JP9386578 A JP 9386578A JP S5520578 A JPS5520578 A JP S5520578A
Authority
JP
Japan
Prior art keywords
unit
state information
information
speed memory
designation information
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
Application number
JP9386578A
Other languages
Japanese (ja)
Inventor
Masanobu Akagi
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.)
NEC Corp
Original Assignee
NEC Corp
Nippon Electric Co 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 NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP9386578A priority Critical patent/JPS5520578A/en
Publication of JPS5520578A publication Critical patent/JPS5520578A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To secure control of a number of channels in a high speed by altering the contents of the high-speed memory unit or writing the state information corresponding to the position of the low-speed memory unit which is designated by the designation information and via the state information control unit.
CONSTITUTION: Low-speed memory unit 19 memorizes the state information corresponding to each of several channels and subchannels, and high-speed memory unit 21 memorizes the state information of a smaller number than unit 19 along with the designation information of each corresponding channel and others. Then the designation information of unit 21 is checked. And in case no designation information is contained in unit 21, the state information is read out of unit 19 and then transferred to unit 21 for utilization. While in case the state information is contained in unit 21, the information is utilized to alter the contents of unit 21 or to decide that the continuation of the memorization becomes impossible. Then the state information corresponding to the position within unit 19 the designation information designates is written through state information control unit 16. As a result, a number of subchannels can be controlled in a high speed.
COPYRIGHT: (C)1980,JPO&Japio
JP9386578A 1978-07-31 1978-07-31 Data transfer device Pending JPS5520578A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9386578A JPS5520578A (en) 1978-07-31 1978-07-31 Data transfer device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9386578A JPS5520578A (en) 1978-07-31 1978-07-31 Data transfer device

Publications (1)

Publication Number Publication Date
JPS5520578A true JPS5520578A (en) 1980-02-14

Family

ID=14094331

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9386578A Pending JPS5520578A (en) 1978-07-31 1978-07-31 Data transfer device

Country Status (1)

Country Link
JP (1) JPS5520578A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60138659A (en) * 1983-12-27 1985-07-23 Fujitsu Ltd Channel control system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60138659A (en) * 1983-12-27 1985-07-23 Fujitsu Ltd Channel control system

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