JPH01139674U - - Google Patents
Info
- Publication number
- JPH01139674U JPH01139674U JP3588888U JP3588888U JPH01139674U JP H01139674 U JPH01139674 U JP H01139674U JP 3588888 U JP3588888 U JP 3588888U JP 3588888 U JP3588888 U JP 3588888U JP H01139674 U JPH01139674 U JP H01139674U
- Authority
- JP
- Japan
- Prior art keywords
- amount
- detail
- emphasizing
- brightness level
- emphasis
- 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
- 238000001514 detection method Methods 0.000 claims 2
- 238000010586 diagram Methods 0.000 description 3
Landscapes
- Picture Signal Circuits (AREA)
- Television Receiver Circuits (AREA)
Description
第１図は本考案になるデイテール強調回路の一
実施例を示すブロツク図、第２図は第１図の各部
の波形を示す図、第３図は従来のデイテール強調
回路の一例を示すブロツク図である。
１１……入力端子、１２，１５……ローパスフ
イルタ（ＬＰＦ）、１３……減算器、１４……電
圧制御アンプ（ＶＣＡ）、１６……白パルス付加
回路、１７……電圧制御反転アンプ、１８……受
光素子、１９……バツフアアンプ、２０……クラ
ンプ回路、２１……加算器、２２……出力端子。
FIG. 1 is a block diagram showing an embodiment of the detail emphasizing circuit according to the present invention, FIG. 2 is a diagram showing waveforms of each part of FIG. 1, and FIG. 3 is a block diagram showing an example of a conventional detail emphasizing circuit. It is. 11...Input terminal, 12, 15...Low pass filter (LPF), 13...Subtractor, 14...Voltage control amplifier (VCA), 16...White pulse addition circuit, 17...Voltage control inverting amplifier, 18 ... Light receiving element, 19 ... Buffer amplifier, 20 ... Clamp circuit, 21 ... Adder, 22 ... Output terminal.
Claims (1)
強調量を可変し、前記輝度レベルが低い時、それ
が高い時に比べてデイテール強調量を大きくして
デイテール強調を行なうデイテール強調回路にお
いて、 外光量を検出する光検出手段と、 この光検出手段により検出された外光量に応じ
て輝度レベルが低い時のデイテール強調量を可変
し、前記外光量が大きい時、それが小さい時に比
べてデイテール強調量を大きくするデイテール強
調量可変回路とを備えてなるデイテール強調回路
。[Claims for Utility Model Registration] Detail enhancement in which the amount of detail emphasis is varied according to the brightness level of an input video signal, and when the brightness level is low, the amount of detail emphasis is made larger than when it is high. The circuit includes a light detection means for detecting the amount of external light, and a detail emphasis amount when the brightness level is low depending on the amount of outside light detected by the light detection means, and when the amount of outside light is large and when it is small. A detail emphasizing circuit comprising: a detail emphasizing amount variable circuit that increases the amount of detail emphasizing compared to the amount of detail emphasizing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3588888U JPH01139674U (en) | 1988-03-18 | 1988-03-18 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3588888U JPH01139674U (en) | 1988-03-18 | 1988-03-18 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01139674U true JPH01139674U (en) | 1989-09-25 |
Family
ID=31262519
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3588888U Pending JPH01139674U (en) | 1988-03-18 | 1988-03-18 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01139674U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04127667A (en) * | 1990-09-18 | 1992-04-28 | Sanyo Electric Co Ltd | Method for adjusting television receiver |
-
1988
- 1988-03-18 JP JP3588888U patent/JPH01139674U/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04127667A (en) * | 1990-09-18 | 1992-04-28 | Sanyo Electric Co Ltd | Method for adjusting television receiver |
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