JPS54139428A - Picture element data generation circuit - Google Patents
Picture element data generation circuitInfo
- Publication number
- JPS54139428A JPS54139428A JP4657278A JP4657278A JPS54139428A JP S54139428 A JPS54139428 A JP S54139428A JP 4657278 A JP4657278 A JP 4657278A JP 4657278 A JP4657278 A JP 4657278A JP S54139428 A JPS54139428 A JP S54139428A
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- output
- address
- raster
- character
- 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 reduce the number of the bits per character of ROM in the pattern generation circuit by forming the space to secure the line space for the display characters and symbols with the raster address signals.
CONSTITUTION: In case the characters and symbols are displayed at the n-ordered character and the n-ordered line on the display screen, the information written into the corresponding address of refresh memory 2 is read out by the counpter output of CRT control circuit 1 showing the n-ordered line and the n-rodered character plus the output of the character counter. Pattern generation circuits 4 and 5 deliver the picture element data synchronized with the raster via the output of the raster counter formed at circuit 1 for the conversion at P/S circuit 6. Here, the address and space are given in case the bit information of the specified digit of the address counter from circuit 1 is "0" and "1" each. Then the gate circuit provided at the output of circuit 6 is controlled by the raster address output, and thus the picture element data is obtained to form the space part regularly and irrespective of the output of circuit 6.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4657278A JPS54139428A (en) | 1978-04-21 | 1978-04-21 | Picture element data generation circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4657278A JPS54139428A (en) | 1978-04-21 | 1978-04-21 | Picture element data generation circuit |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS54139428A true JPS54139428A (en) | 1979-10-29 |
Family
ID=12751021
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP4657278A Pending JPS54139428A (en) | 1978-04-21 | 1978-04-21 | Picture element data generation circuit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS54139428A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5670593A (en) * | 1979-11-14 | 1981-06-12 | Tokyo Shibaura Electric Co | Display unit |
JPS5756889A (en) * | 1980-09-24 | 1982-04-05 | Soodo Densanki System Kk | Character display controlling method in refresh system indicator |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4874745A (en) * | 1971-12-30 | 1973-10-08 | ||
JPS5030973A (en) * | 1973-07-19 | 1975-03-27 | ||
JPS5127031A (en) * | 1974-10-18 | 1976-03-06 | Ricoh Kk | MOJIHYO JISOCHI |
JPS522223A (en) * | 1975-06-24 | 1977-01-08 | Hitachi Ltd | Graph illustration system |
-
1978
- 1978-04-21 JP JP4657278A patent/JPS54139428A/en active Pending
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4874745A (en) * | 1971-12-30 | 1973-10-08 | ||
JPS5030973A (en) * | 1973-07-19 | 1975-03-27 | ||
JPS5127031A (en) * | 1974-10-18 | 1976-03-06 | Ricoh Kk | MOJIHYO JISOCHI |
JPS522223A (en) * | 1975-06-24 | 1977-01-08 | Hitachi Ltd | Graph illustration system |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5670593A (en) * | 1979-11-14 | 1981-06-12 | Tokyo Shibaura Electric Co | Display unit |
JPS5756889A (en) * | 1980-09-24 | 1982-04-05 | Soodo Densanki System Kk | Character display controlling method in refresh system indicator |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JPS52116025A (en) | Sectional display control system in display picture | |
GB1517751A (en) | Microcomputer terminal system | |
GB1522098A (en) | Digital raster display system | |
JPS53124916A (en) | Generating unit for color pattern and character | |
JPS5454531A (en) | Crt display unti | |
JPS54139428A (en) | Picture element data generation circuit | |
JPS53111244A (en) | Display system for position | |
JPS5633769A (en) | Control method for writing to buffer memory device | |
JPS54139430A (en) | Crt display unit | |
GB1530573A (en) | Readout unit for data stored in a random-access memory and presented on a raster scan display in accordance with a given line pattern | |
JPS55115140A (en) | Display unit | |
JPS5730084A (en) | Image data processor | |
JPS54139427A (en) | Pattern generation circuit | |
JPS54139426A (en) | Crt display unit | |
JPS54139429A (en) | Crt display unit | |
JPS55115138A (en) | Character display unit | |
JPS58194090A (en) | Display unit | |
JPS5542489A (en) | Multiplex information receiver | |
JPS54139431A (en) | Crt display unit | |
JPS5591085A (en) | Screen printing system for display screen printer | |
JPS5219029A (en) | Figure display | |
JPS54104244A (en) | Picture memory unit | |
JPS5582350A (en) | Character display system | |
JPS5439529A (en) | Transfer control system for magnetic bubble element and the like | |
JPS5427730A (en) | Display unut on repetitive scanning system |