JPS54137244A - Graphic display unit - Google Patents
Graphic display unitInfo
- Publication number
- JPS54137244A JPS54137244A JP4568278A JP4568278A JPS54137244A JP S54137244 A JPS54137244 A JP S54137244A JP 4568278 A JP4568278 A JP 4568278A JP 4568278 A JP4568278 A JP 4568278A JP S54137244 A JPS54137244 A JP S54137244A
- Authority
- JP
- Japan
- Prior art keywords
- memory
- address
- contents
- generator
- picture element
- 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
Abstract
PURPOSE: To secure the instantaneous change for part or whole of the screen of the display contents with no alteration of the memory contents by providing the converter to change the conversion contents between the data read out from the memory groups and the video signals.
CONSTITUTION: Address generator 1 separates the display screen into the picture element unit and one group of plural picture element units in accordance with the sequential scanning. In addition to generator 1, plural memory groups 3 are provided to form the part corresponding to the picture element unit as the bit more than 2 with reception of address 2 corresponding to the vivided display screens. Then paired memory 10 is added to memorize the signals sent from address control input 9, along with address arithmetic unit 11 to compare the output of memory 10 with address 2 of generator 1. Thus, whether or not the tetragon on the screen is scanned is decided. At the same time, the conversion data given from data register control input 13 is given to comparator 7 together with the output of converter 11 and each output of memory group 3 via buffer 5, thus part or whole of the display contents being changed instantaneously.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4568278A JPS54137244A (en) | 1978-04-17 | 1978-04-17 | Graphic display unit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4568278A JPS54137244A (en) | 1978-04-17 | 1978-04-17 | Graphic display unit |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS54137244A true JPS54137244A (en) | 1979-10-24 |
Family
ID=12726155
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP4568278A Pending JPS54137244A (en) | 1978-04-17 | 1978-04-17 | Graphic display unit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS54137244A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2007333244A (en) * | 2006-06-12 | 2007-12-27 | Sanyo Electric Co Ltd | Storage |
-
1978
- 1978-04-17 JP JP4568278A patent/JPS54137244A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2007333244A (en) * | 2006-06-12 | 2007-12-27 | Sanyo Electric Co Ltd | Storage |
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