JPS5685177A - Picture data expanding device - Google Patents
Picture data expanding deviceInfo
- Publication number
- JPS5685177A JPS5685177A JP16326579A JP16326579A JPS5685177A JP S5685177 A JPS5685177 A JP S5685177A JP 16326579 A JP16326579 A JP 16326579A JP 16326579 A JP16326579 A JP 16326579A JP S5685177 A JPS5685177 A JP S5685177A
- Authority
- JP
- Japan
- Prior art keywords
- expansion
- data
- computer
- control
- compression data
- 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
- Image Processing (AREA)
Abstract
PURPOSE: To realize a high-speed expansion process within a system comprising mainly the computers, by receiving the compression data along with the control word from the computers connected directly to each other via the bus and then returning the compression data to the computer after storing it as an extension data.
CONSTITUTION: The control part 26 of an expanding device receives previously the transfer word number of the compression data to the input buffer part 23 from the side of the computer in the form of the control word and via the computer bus 1 and the drive receiving circuit 2. This word number is used for the control of the data number when the compression data is transferred to the part 23 and at the same time sent to the expansion control part 28 which controls the operation of the expansion part 24 to be used for the end detection of the expansion process. Thus a control is given to the transfer of the picture element data after an expansion is carried out to the computer memory from the output buffer part 25. For the computer, the compression data is transferred to the DMA from the memoryjust by sending the transfer start command of both the compression data and the picture element data and then returned after an expansion. As a result, an easy and high- speed process is possible for expansion of the picture data like a use of the subroutine in terms of the sofrtware.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16326579A JPS5685177A (en) | 1979-12-14 | 1979-12-14 | Picture data expanding device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16326579A JPS5685177A (en) | 1979-12-14 | 1979-12-14 | Picture data expanding device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5685177A true JPS5685177A (en) | 1981-07-11 |
Family
ID=15770512
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP16326579A Pending JPS5685177A (en) | 1979-12-14 | 1979-12-14 | Picture data expanding device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5685177A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62219080A (en) * | 1986-03-19 | 1987-09-26 | Matsushita Electric Ind Co Ltd | Picture data converter |
JPH02193316A (en) * | 1989-01-20 | 1990-07-31 | Matsushita Electric Ind Co Ltd | Optical disk |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5099238A (en) * | 1973-12-28 | 1975-08-06 |
-
1979
- 1979-12-14 JP JP16326579A patent/JPS5685177A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5099238A (en) * | 1973-12-28 | 1975-08-06 |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62219080A (en) * | 1986-03-19 | 1987-09-26 | Matsushita Electric Ind Co Ltd | Picture data converter |
JPH02193316A (en) * | 1989-01-20 | 1990-07-31 | Matsushita Electric Ind Co Ltd | Optical disk |
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