JPS6197276U - - Google Patents
Info
- Publication number
- JPS6197276U JPS6197276U JP18281584U JP18281584U JPS6197276U JP S6197276 U JPS6197276 U JP S6197276U JP 18281584 U JP18281584 U JP 18281584U JP 18281584 U JP18281584 U JP 18281584U JP S6197276 U JPS6197276 U JP S6197276U
- Authority
- JP
- Japan
- Prior art keywords
- blanking
- circuit
- pulse
- brightness signal
- television
- 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
- 239000003990 capacitor Substances 0.000 claims description 2
- 230000008929 regeneration Effects 0.000 claims 1
- 238000011069 regeneration method Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 5
Landscapes
- Television Receiver Circuits (AREA)
Description
第１図は本考案の一実施例に係るテレビジヨン
の輝度信号処理回路を概念的に示すブロツク図、
第２図Ａ，Ｂはそれぞれ従来例の全体的に明るい
画面の輝度信号と黒レベルの関係、全体的に暗い
画面の輝度信号と黒レベルの関係を模式的に示す
各波形図、第３図Ａ，Ｂはそれぞれ前記一実施例
の増大補正されたブランキングパルスＰｂ１の補
正量（振幅）が比較的小さい場合の全体的に明る
い画面の輝度信号と黒レベルの関係、全体的に暗
い画面の輝度信号と黒レベルの関係を模式的に示
す各波形図、第４図Ａ，Ｂはそれぞれ前記一実施
例の増大補正されたブランキングパルスＰｂ１の
補正量（振幅）が比較的小さい場合の全体的に明
るい画面の輝度信号と黒レベルの開係、全体的に
暗い画面の輝度信号と黒レベルの関係を模式的に
示す各波形図、第５図はテレビジヨンの輝度信号
処理回路従来例を概念的に示すブロツク図である
。
３…ブランキング回路、４…バツフアアンプ、
５…パルス補正回路、Ｃ…コンデンサ。
FIG. 1 is a block diagram conceptually showing a brightness signal processing circuit of a television according to an embodiment of the present invention;
Figures 2A and 2B are waveform diagrams schematically showing the relationship between the luminance signal and black level for an overall bright screen and the relationship between the luminance signal and black level for an overall dark screen in the conventional example, respectively, and Figure 3 A and B are the relationship between the luminance signal and black level of an overall bright screen when the correction amount (amplitude) of the increase-corrected blanking pulse Pb 1 of the above embodiment is relatively small, and the overall dark screen, respectively. Waveform diagrams A and B schematically showing the relationship between the luminance signal and the black level of FIG . Each waveform diagram schematically shows the relationship between the brightness signal and black level for an overall bright screen, and the relationship between the brightness signal and black level for an overall dark screen. Figure 5 is a conventional brightness signal processing circuit for a television. FIG. 2 is a block diagram conceptually showing an example. 3...Blanking circuit, 4...Buffer amplifier,
5...Pulse correction circuit, C...Capacitor.
Claims (1)
信号にブランキングパルスを付加させるブランキ
ング回路と、このブランキング回路の出力を増幅
するバツフアアンプとを有するテレビジヨンの輝
度信号処理回路に於いて、前記ブランキング回路
にブランキングパルスの振幅またはパルス幅を画
面の暗さに対応して増大補正するパルス補正回路
を設ける一方、このブランキング回路とバツフア
アンプとの間にコンデンサを直列に挿入したこと
を特徴とする、テレビジヨンの輝度信号処理回路
。 In a brightness signal processing circuit for a television, which includes a blanking circuit that adds a blanking pulse to a brightness signal subjected to DC regeneration during a back porch period, and a buffer amplifier that amplifies the output of this blanking circuit, the blanking The circuit is equipped with a pulse correction circuit that increases and corrects the amplitude or pulse width of the blanking pulse in response to the darkness of the screen, and is characterized in that a capacitor is inserted in series between the blanking circuit and the buffer amplifier. , brightness signal processing circuit for television.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18281584U JPS6197276U (en) | 1984-12-01 | 1984-12-01 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18281584U JPS6197276U (en) | 1984-12-01 | 1984-12-01 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6197276U true JPS6197276U (en) | 1986-06-21 |
Family
ID=30740348
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18281584U Pending JPS6197276U (en) | 1984-12-01 | 1984-12-01 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6197276U (en) |
-
1984
- 1984-12-01 JP JP18281584U patent/JPS6197276U/ja active Pending
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