JPS6419445A - Data storage system - Google Patents

Data storage system

Info

Publication number
JPS6419445A
JPS6419445A JP62174709A JP17470987A JPS6419445A JP S6419445 A JPS6419445 A JP S6419445A JP 62174709 A JP62174709 A JP 62174709A JP 17470987 A JP17470987 A JP 17470987A JP S6419445 A JPS6419445 A JP S6419445A
Authority
JP
Japan
Prior art keywords
descriptor
data
buffer area
leading address
frame
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
JP62174709A
Other languages
Japanese (ja)
Other versions
JP2708424B2 (en
Inventor
Makoto Takano
Yasuhiko Hoshi
Keiichi Kurakazu
Shiro Baba
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 Microcomputer System Ltd
Hitachi Ltd
Original Assignee
Hitachi Ltd
Hitachi Microcomputer Engineering 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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=15983281&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=JPS6419445(A) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Hitachi Ltd, Hitachi Microcomputer Engineering Ltd filed Critical Hitachi Ltd
Priority to JP62174709A priority Critical patent/JP2708424B2/en
Publication of JPS6419445A publication Critical patent/JPS6419445A/en
Application granted granted Critical
Publication of JP2708424B2 publication Critical patent/JP2708424B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Landscapes

  • Computer And Data Communications (AREA)
  • Memory System (AREA)
  • Memory System Of A Hierarchy Structure (AREA)

Abstract

PURPOSE:To improve the memory use efficiency and to shorten the data read time by preventing the occurrence of an ineffective buffer area which is left unused and only taking one descriptor to obtain the leading address of a buffer area where desired data is stored. CONSTITUTION:A leading address TA of the buffer area where reception data of one frame is stored is described in a first pointer PNT1 of a descriptor DD1, and a leading address DTA of the memory area where a descriptor DD2 following the descriptor DD1 is stored is described in a second pointer PNT2. Each descriptor DD is provided with an indication column DES where a data delimiter signal indicating whether reception data is terminated in the indicated buffer area or not is described. Since the number of buffer areas used for each frame is changed in accordance with the length of data of a variable length frame, the ineffective buffer area is reduced and only one descriptor is taken to immediately obtain the leading address of data of the next frame. Thus, the buffer memory use efficiency is improved and the data read time is shortened.
JP62174709A 1987-07-15 1987-07-15 Data storage method Expired - Lifetime JP2708424B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62174709A JP2708424B2 (en) 1987-07-15 1987-07-15 Data storage method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62174709A JP2708424B2 (en) 1987-07-15 1987-07-15 Data storage method

Publications (2)

Publication Number Publication Date
JPS6419445A true JPS6419445A (en) 1989-01-23
JP2708424B2 JP2708424B2 (en) 1998-02-04

Family

ID=15983281

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62174709A Expired - Lifetime JP2708424B2 (en) 1987-07-15 1987-07-15 Data storage method

Country Status (1)

Country Link
JP (1) JP2708424B2 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08328944A (en) * 1995-05-31 1996-12-13 Nec Corp Memory managing system
JP2003101454A (en) * 2001-09-20 2003-04-04 Japan Radio Co Ltd Communication data storage address acquisition circuit
JP2007011519A (en) * 2005-06-29 2007-01-18 Fuji Electric Fa Components & Systems Co Ltd Programmable controller
US7461884B2 (en) * 1995-07-26 2008-12-09 Scott Clare Storage system for vehicles

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08328944A (en) * 1995-05-31 1996-12-13 Nec Corp Memory managing system
US7461884B2 (en) * 1995-07-26 2008-12-09 Scott Clare Storage system for vehicles
JP2003101454A (en) * 2001-09-20 2003-04-04 Japan Radio Co Ltd Communication data storage address acquisition circuit
JP2007011519A (en) * 2005-06-29 2007-01-18 Fuji Electric Fa Components & Systems Co Ltd Programmable controller

Also Published As

Publication number Publication date
JP2708424B2 (en) 1998-02-04

Similar Documents

Publication Publication Date Title
GB1413739A (en) Address conversion units and data processing systems embodying the same
GB1528100A (en) Apparatus for providing valid information for invalid information in unalterable memory means
JPS6419445A (en) Data storage system
JPS5530727A (en) Information processor
JPS5644294A (en) Time division electronic exchange
JPS57174745A (en) Control circuit for interruption priority
JPS5443630A (en) Memory access control system
JPS5733472A (en) Memory access control system
GB1469300A (en) Circuit arrangement for an integrated data processing system
JPS6488657A (en) Stack control circuit
JPS55150178A (en) Memory unit
JPS5562576A (en) Information processing unit with address conversion function
JPS56118133A (en) Direct memory access circuit
SU560219A1 (en) Information sharing device
SU564723A1 (en) Device for selecting information channels
SU1553983A1 (en) Permanent memory device
JPS6426250A (en) Memory readout circuit for cpu
SU1307462A1 (en) Interface for linking electronic computer with using equipment
JPS5665384A (en) Information processor
JPS5683896A (en) Memory circuit
JPS57132257A (en) Data processor
JPS5553744A (en) Microprogram storing system
JPS57174753A (en) Information processor
JPS5798051A (en) Memory system of scan in/out data
JPS57157303A (en) Numerical control system