JPH0380493U - - Google Patents
Info
- Publication number
- JPH0380493U JPH0380493U JP13998189U JP13998189U JPH0380493U JP H0380493 U JPH0380493 U JP H0380493U JP 13998189 U JP13998189 U JP 13998189U JP 13998189 U JP13998189 U JP 13998189U JP H0380493 U JPH0380493 U JP H0380493U
- Authority
- JP
- Japan
- Prior art keywords
- control circuit
- output
- fixed data
- shift register
- clock
- 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
Description
第１図はこの考案による表示制御装置における
パラレル／シリアル変換部の一構成例を示すブロ
ツク図、第２図はパラレル／シリアル変換部の期
待出力波形図、第３図は表示制御システムを示す
ブロツク図、第４図はフオントパターンとフオン
トコードの例を示す図、第５図は前景色／背景色
制御部の回路図、第６図は従来のパラレル／シリ
アル変換部の回路図である。
図において、１２……シフトレジスタ、１３…
…文字コード制御部、１４……２入力ＡＮＤゲー
ト、１５……セレクタを示す。なお、図中、同一
符号は同一、または相当部分を示す。
Fig. 1 is a block diagram showing an example of the configuration of a parallel/serial converter in a display control device according to this invention, Fig. 2 is an expected output waveform diagram of the parallel/serial converter, and Fig. 3 is a block diagram showing a display control system. 4 is a diagram showing an example of a font pattern and a font code, FIG. 5 is a circuit diagram of a foreground color/background color control section, and FIG. 6 is a circuit diagram of a conventional parallel/serial conversion section. In the figure, 12... shift register, 13...
. . . character code control unit, 14 . . . 2-input AND gate, 15 . . . selector. In addition, in the figures, the same reference numerals indicate the same or equivalent parts.
Claims (1)
ある特定の文字コードを判断する制御回路と、前
記制御回路の出力と画素単位で一周期を構成する
クロツクを入力とする制御ゲートと、前記制御ゲ
ートの出力をクロツク入力とし、文字フオントを
シリアルに変換するシフトレジスタと、前記制御
回路の出力により、前記シフトレジスタの出力と
複数の固定データを選択して出力するセレクタを
備え、前記制御回路の出力レベルによつて、前記
画素毎のクロツク入力を禁止し、固定データを選
択出力することにより表示データを制御すること
を特徴とする表示制御装置。 A display control device for displaying characters,
A control circuit that determines a specific character code, a control gate that receives as input the output of the control circuit and a clock that constitutes one cycle in pixel units, and a control circuit that uses the output of the control gate as the clock input to serially convert character fonts. A shift register for conversion and a selector for selecting and outputting the output of the shift register and a plurality of fixed data according to the output of the control circuit, and the clock input for each pixel is controlled according to the output level of the control circuit. 1. A display control device that controls display data by inhibiting fixed data and selectively outputting fixed data.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13998189U JPH0380493U (en) | 1989-12-01 | 1989-12-01 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13998189U JPH0380493U (en) | 1989-12-01 | 1989-12-01 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0380493U true JPH0380493U (en) | 1991-08-19 |
Family
ID=31686991
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13998189U Pending JPH0380493U (en) | 1989-12-01 | 1989-12-01 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0380493U (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58205184A (en) * | 1982-05-26 | 1983-11-30 | 株式会社リコー | character display |
| JPS59183A (en) * | 1982-06-25 | 1984-01-05 | 株式会社日立製作所 | display device |
| JPS6374090A (en) * | 1986-09-18 | 1988-04-04 | 東洋通信機株式会社 | Access system for character generator |
-
1989
- 1989-12-01 JP JP13998189U patent/JPH0380493U/ja active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58205184A (en) * | 1982-05-26 | 1983-11-30 | 株式会社リコー | character display |
| JPS59183A (en) * | 1982-06-25 | 1984-01-05 | 株式会社日立製作所 | display device |
| JPS6374090A (en) * | 1986-09-18 | 1988-04-04 | 東洋通信機株式会社 | Access system for character generator |
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