JPS5392633A - Read only memory unit - Google Patents

Read only memory unit

Info

Publication number
JPS5392633A
JPS5392633A JP737077A JP737077A JPS5392633A JP S5392633 A JPS5392633 A JP S5392633A JP 737077 A JP737077 A JP 737077A JP 737077 A JP737077 A JP 737077A JP S5392633 A JPS5392633 A JP S5392633A
Authority
JP
Japan
Prior art keywords
read
memory unit
memory element
memory
pbs
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
JP737077A
Other languages
Japanese (ja)
Inventor
Toshio Araki
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP737077A priority Critical patent/JPS5392633A/en
Publication of JPS5392633A publication Critical patent/JPS5392633A/en
Pending legal-status Critical Current

Links

Landscapes

  • Read Only Memory (AREA)
  • For Increasing The Reliability Of Semiconductor Memories (AREA)
  • Detection And Correction Of Errors (AREA)
  • Techniques For Improving Reliability Of Storages (AREA)

Abstract

PURPOSE: To raise a use efficiency of the memory element up to 100% and reduce the cost and improve reliability by storing PBs, which correspond to the memory capacity of a parity bit PB memory element, in PB memory element.
COPYRIGHT: (C)1978,JPO&Japio
JP737077A 1977-01-25 1977-01-25 Read only memory unit Pending JPS5392633A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP737077A JPS5392633A (en) 1977-01-25 1977-01-25 Read only memory unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP737077A JPS5392633A (en) 1977-01-25 1977-01-25 Read only memory unit

Publications (1)

Publication Number Publication Date
JPS5392633A true JPS5392633A (en) 1978-08-14

Family

ID=11664075

Family Applications (1)

Application Number Title Priority Date Filing Date
JP737077A Pending JPS5392633A (en) 1977-01-25 1977-01-25 Read only memory unit

Country Status (1)

Country Link
JP (1) JPS5392633A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5545110A (en) * 1978-09-25 1980-03-29 Toshiba Corp Error detection system
JPS5917642A (en) * 1982-07-22 1984-01-28 Meidensha Electric Mfg Co Ltd Device for reading out parity data
JPS59112400U (en) * 1983-12-08 1984-07-28 富士通株式会社 memory device
JP2008108297A (en) * 2006-10-23 2008-05-08 Toshiba Corp Nonvolatile semiconductor memory device

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5545110A (en) * 1978-09-25 1980-03-29 Toshiba Corp Error detection system
JPS5917642A (en) * 1982-07-22 1984-01-28 Meidensha Electric Mfg Co Ltd Device for reading out parity data
JPS59112400U (en) * 1983-12-08 1984-07-28 富士通株式会社 memory device
JPS6117480Y2 (en) * 1983-12-08 1986-05-28
JP2008108297A (en) * 2006-10-23 2008-05-08 Toshiba Corp Nonvolatile semiconductor memory device

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