JPS6333257U - - Google Patents
Info
- Publication number
- JPS6333257U JPS6333257U JP12737686U JP12737686U JPS6333257U JP S6333257 U JPS6333257 U JP S6333257U JP 12737686 U JP12737686 U JP 12737686U JP 12737686 U JP12737686 U JP 12737686U JP S6333257 U JPS6333257 U JP S6333257U
- Authority
- JP
- Japan
- Prior art keywords
- transistor
- output terminal
- gamma
- input terminal
- output
- 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.)
- Granted
Links
- 238000010586 diagram Methods 0.000 description 3
Landscapes
- Picture Signal Circuits (AREA)
Description
第１図はこの考案の一実施例によるガンマ補正
回路の回路図、第２図は従来のガンマ補正回路の
回路図、第３図はガンマ補正回路の入出力特性を
示す図である。
１……ガンマ回路入力端子、９，１０，１１，
１７，１８，１９，２０……トランジスタ、１２
……電源、１３，１４，１５……電圧源、１６…
…ガンマ回路出力端子、２１，２２……定電流源
、１００……差動増幅器。なお、図中符号は同一
または相当部分を示す。
FIG. 1 is a circuit diagram of a gamma correction circuit according to an embodiment of the present invention, FIG. 2 is a circuit diagram of a conventional gamma correction circuit, and FIG. 3 is a diagram showing input/output characteristics of the gamma correction circuit. 1... Gamma circuit input terminal, 9, 10, 11,
17, 18, 19, 20...transistor, 12
...Power source, 13,14,15...Voltage source, 16...
... Gamma circuit output terminal, 21, 22 ... Constant current source, 100 ... Differential amplifier. Note that the symbols in the figures indicate the same or corresponding parts.
Claims (1)
出力端に入力が印加され、入力端が電源およびガ
ンマ回路出力端子に接続された出力段トランジス
タを有する増幅器、各々の制御極に前記第１の電
圧源および第２の電圧源が接続され、かつ各々の
入力端、出力端が共通接続されると共に、該入力
端が前記電源に、該出力端が電流制御手段に接続
された第１のトランジスタおよび第２のトランジ
スタと、前記第１および第２のトランジスタの出
力端に制御極が接続され、かつ入力端が前記ガン
マ回路出力端子に接続された第３のトランジスタ
とからなる回路を複数段備え、前記第３のトラン
ジスタの導通状態により前記ガンマ回路出力端子
の出力電圧を所望の傾斜角を有するよう制御する
ことを特徴とするガンマ補正回路。 (2) 電流制御手段は定電流源であることを特徴
とする実用新案登録請求の範囲第(1)項記載のガ
ンマ補正回路。 (3) 電流制御手段は抵抗体であることを特徴と
する実用新案登録請求の範囲第(1)項記載のガン
マ補正回路。[Claims for Utility Model Registration] (1) It has an output stage transistor whose control pole is connected to a first voltage source, an input is applied to its output terminal, and whose input terminal is connected to the power supply and the gamma circuit output terminal. The first voltage source and the second voltage source are connected to each control pole of the amplifier, and each input terminal and output terminal are commonly connected, and the input terminal is connected to the power supply, and the output terminal is connected to the power supply. a first transistor and a second transistor connected to the current control means, and a second transistor whose control pole is connected to the output terminals of the first and second transistors and whose input terminal is connected to the gamma circuit output terminal. 3. A gamma correction circuit comprising a plurality of circuits each having a plurality of stages, the third transistor having a plurality of stages, and controlling the output voltage of the gamma circuit output terminal to have a desired slope angle according to the conduction state of the third transistor. (2) The gamma correction circuit according to claim (1), wherein the current control means is a constant current source. (3) The gamma correction circuit according to claim (1), wherein the current control means is a resistor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12737686U JPH0510457Y2 (en) | 1986-08-20 | 1986-08-20 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12737686U JPH0510457Y2 (en) | 1986-08-20 | 1986-08-20 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6333257U true JPS6333257U (en) | 1988-03-03 |
| JPH0510457Y2 JPH0510457Y2 (en) | 1993-03-15 |
Family
ID=31022069
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12737686U Expired - Lifetime JPH0510457Y2 (en) | 1986-08-20 | 1986-08-20 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0510457Y2 (en) |
-
1986
- 1986-08-20 JP JP12737686U patent/JPH0510457Y2/ja not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0510457Y2 (en) | 1993-03-15 |
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