JPS5661086A - Refresh system for dynamic memory - Google Patents

Refresh system for dynamic memory

Info

Publication number
JPS5661086A
JPS5661086A JP13664179A JP13664179A JPS5661086A JP S5661086 A JPS5661086 A JP S5661086A JP 13664179 A JP13664179 A JP 13664179A JP 13664179 A JP13664179 A JP 13664179A JP S5661086 A JPS5661086 A JP S5661086A
Authority
JP
Japan
Prior art keywords
memory
refresh
rams
ram
addresses
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
JP13664179A
Other languages
Japanese (ja)
Inventor
Takatoshi Ishii
Yuichi Saito
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP13664179A priority Critical patent/JPS5661086A/en
Publication of JPS5661086A publication Critical patent/JPS5661086A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N25/00—Circuitry of solid-state image sensors [SSIS]; Control thereof

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)

Abstract

PURPOSE:To make unnecessary the refresh circuit, by controlling to make the memory access used in common with the refresh of dynamic memory array. CONSTITUTION:A memory 21 consists of, for example, an ROM 210 in 16K-bit and D-RAMs 211-213 in 16K-bit, and a part of area of D-RAM 211 is used for the memory area V-RAM for picture informtion. A CRT display control circuit 36 stores picture information to the memory to perform the refresh for memory 60 times per second. Further, by using the memory access operation to V-RAMs periodically, the entire D-RAM 211 can be refreshed. Further, the row address bits and the column address bits of the address are replaced, and the lower rank addresses are taken as column addresses and the row addresses are circluated in a given time, allowing to refresh RAMs 212, 213.
JP13664179A 1979-10-23 1979-10-23 Refresh system for dynamic memory Pending JPS5661086A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13664179A JPS5661086A (en) 1979-10-23 1979-10-23 Refresh system for dynamic memory

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13664179A JPS5661086A (en) 1979-10-23 1979-10-23 Refresh system for dynamic memory

Publications (1)

Publication Number Publication Date
JPS5661086A true JPS5661086A (en) 1981-05-26

Family

ID=15180052

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13664179A Pending JPS5661086A (en) 1979-10-23 1979-10-23 Refresh system for dynamic memory

Country Status (1)

Country Link
JP (1) JPS5661086A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59187199U (en) * 1983-05-31 1984-12-12 ソニー株式会社 Parts assembly equipment
JPS6194297A (en) * 1984-10-16 1986-05-13 Matsushita Electric Ind Co Ltd Refresh device of dynamic memory
JPH01179515A (en) * 1988-01-11 1989-07-17 Sanyo Electric Co Ltd Digital signal processor and signal processing method
US5031147A (en) * 1988-07-26 1991-07-09 Kabushiki Kaisha Toshiba Semiconductor memory

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59187199U (en) * 1983-05-31 1984-12-12 ソニー株式会社 Parts assembly equipment
JPS6194297A (en) * 1984-10-16 1986-05-13 Matsushita Electric Ind Co Ltd Refresh device of dynamic memory
JPH01179515A (en) * 1988-01-11 1989-07-17 Sanyo Electric Co Ltd Digital signal processor and signal processing method
US5031147A (en) * 1988-07-26 1991-07-09 Kabushiki Kaisha Toshiba Semiconductor memory

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