JPS6484380A - Image data input/output device - Google Patents

Image data input/output device

Info

Publication number
JPS6484380A
JPS6484380A JP62240686A JP24068687A JPS6484380A JP S6484380 A JPS6484380 A JP S6484380A JP 62240686 A JP62240686 A JP 62240686A JP 24068687 A JP24068687 A JP 24068687A JP S6484380 A JPS6484380 A JP S6484380A
Authority
JP
Japan
Prior art keywords
buffer
image data
output device
external host
host device
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
JP62240686A
Other languages
Japanese (ja)
Inventor
Masao Tokokuni
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.)
Canon Inc
Original Assignee
Canon Inc
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 Canon Inc filed Critical Canon Inc
Priority to JP62240686A priority Critical patent/JPS6484380A/en
Publication of JPS6484380A publication Critical patent/JPS6484380A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE:To allow a host side to optionally grasp the I/O state of a frame buffer by outputting an operation status signal from a buffer control means to an external host device. CONSTITUTION:Buffer means 51, 52 store the image data of one picture, e.g. and buffer control means 53, 54 write or read out image data in/from the buffer means 51, 52 in accordance with a data transfer request outputted from am an image input device or an image output device. At that time, an interface means 5 outputs status indicating whether the buffer access address or buffer access end condition of the means 53,54 are satisfied or not or an operation status signal to the external host device under control based upon the external host device. Consequently, a frame buffer for image data can be also controlled on the host side.
JP62240686A 1987-09-28 1987-09-28 Image data input/output device Pending JPS6484380A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62240686A JPS6484380A (en) 1987-09-28 1987-09-28 Image data input/output device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62240686A JPS6484380A (en) 1987-09-28 1987-09-28 Image data input/output device

Publications (1)

Publication Number Publication Date
JPS6484380A true JPS6484380A (en) 1989-03-29

Family

ID=17063198

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62240686A Pending JPS6484380A (en) 1987-09-28 1987-09-28 Image data input/output device

Country Status (1)

Country Link
JP (1) JPS6484380A (en)

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