JPS6484380A - Image data input/output device - Google Patents
Image data input/output deviceInfo
- 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
Links
Landscapes
- Dot-Matrix Printers And Others (AREA)
- Record Information Processing For Printing (AREA)
- Image Input (AREA)
- Controls And Circuits For Display Device (AREA)
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.
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) |
-
1987
- 1987-09-28 JP JP62240686A patent/JPS6484380A/en active Pending
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