JPS5798194A - Storage device - Google Patents

Storage device

Info

Publication number
JPS5798194A
JPS5798194A JP55175092A JP17509280A JPS5798194A JP S5798194 A JPS5798194 A JP S5798194A JP 55175092 A JP55175092 A JP 55175092A JP 17509280 A JP17509280 A JP 17509280A JP S5798194 A JPS5798194 A JP S5798194A
Authority
JP
Japan
Prior art keywords
access
accordance
executed
memory
access request
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
JP55175092A
Other languages
Japanese (ja)
Other versions
JPS6024474B2 (en
Inventor
Kiyoshi Sato
Kyoichi Shimizu
Tadashi Takahashi
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.)
Victor Company of Japan Ltd
Nippon Victor KK
Original Assignee
Victor Company of Japan Ltd
Nippon Victor KK
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 Victor Company of Japan Ltd, Nippon Victor KK filed Critical Victor Company of Japan Ltd
Priority to JP55175092A priority Critical patent/JPS6024474B2/en
Publication of JPS5798194A publication Critical patent/JPS5798194A/en
Publication of JPS6024474B2 publication Critical patent/JPS6024474B2/en
Expired legal-status Critical Current

Links

Landscapes

  • Digital Computer Display Output (AREA)
  • Image Generation (AREA)

Abstract

PURPOSE:To increase an access speed and to raise the memory working efficiency, by constituting so that access by both TV and CPU systems to a picture memory having plural ports can be executed quickly in accordance with the port working state by a priority processing circuit. CONSTITUTION:This device is provided with a picture memory M having plural ports and a priority processing circuit PRCT so that access by 2 systems TVS, CPUS to the memory can be executed as quickly as possible in accordance with the working state of the port. This processing circuit selects a port and executes access in accordance with a new access request when the memory is not accessed, and when it has been accessed already, a new access request is made a waiting state even in case of any of both the systems, its access request is executed when the access cycle has ended, and in case when access has been requested simultaneously, its access request is executed in accordance with the priority rank which has been decided in advance.
JP55175092A 1980-12-11 1980-12-11 Storage device Expired JPS6024474B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55175092A JPS6024474B2 (en) 1980-12-11 1980-12-11 Storage device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55175092A JPS6024474B2 (en) 1980-12-11 1980-12-11 Storage device

Publications (2)

Publication Number Publication Date
JPS5798194A true JPS5798194A (en) 1982-06-18
JPS6024474B2 JPS6024474B2 (en) 1985-06-13

Family

ID=15990101

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55175092A Expired JPS6024474B2 (en) 1980-12-11 1980-12-11 Storage device

Country Status (1)

Country Link
JP (1) JPS6024474B2 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59121433A (en) * 1982-12-20 1984-07-13 Fujitsu Ltd Recording and reproducing system of voice data
WO1986006522A1 (en) * 1985-04-30 1986-11-06 Fanuc Ltd Image processor
JPS6252590A (en) * 1985-08-31 1987-03-07 日本電気ホームエレクトロニクス株式会社 Access control system for screen memory
JPH03134889A (en) * 1989-10-20 1991-06-07 Tokyo Electric Co Ltd Memory controller

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59121433A (en) * 1982-12-20 1984-07-13 Fujitsu Ltd Recording and reproducing system of voice data
JPH0237639B2 (en) * 1982-12-20 1990-08-27 Fujitsu Ltd
WO1986006522A1 (en) * 1985-04-30 1986-11-06 Fanuc Ltd Image processor
JPS6252590A (en) * 1985-08-31 1987-03-07 日本電気ホームエレクトロニクス株式会社 Access control system for screen memory
JPH03134889A (en) * 1989-10-20 1991-06-07 Tokyo Electric Co Ltd Memory controller

Also Published As

Publication number Publication date
JPS6024474B2 (en) 1985-06-13

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