JPH0384681U - - Google Patents
Info
- Publication number
- JPH0384681U JPH0384681U JP14593289U JP14593289U JPH0384681U JP H0384681 U JPH0384681 U JP H0384681U JP 14593289 U JP14593289 U JP 14593289U JP 14593289 U JP14593289 U JP 14593289U JP H0384681 U JPH0384681 U JP H0384681U
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- video signal
- signal processing
- gamma correction
- white
- 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
- 230000006835 compression Effects 0.000 claims description 8
- 238000007906 compression Methods 0.000 claims description 8
- 238000010586 diagram Methods 0.000 description 3
- 238000007796 conventional method Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
Landscapes
- Picture Signal Circuits (AREA)
Description
第１図は本考案を示すブロツク図、第２図は従
来の技術を示すブロツク図、第３図は本考案の一
実施例の回路図である。
１……ガンマ整形回路、２……ガンマ圧縮回路
、３……減衰回路、４……白圧縮回路、５……検
波回路、６……混合回路、７……白圧縮を含む白
制限回路、Ａ１，Ａ２……反転増幅器。
FIG. 1 is a block diagram showing the present invention, FIG. 2 is a block diagram showing a conventional technique, and FIG. 3 is a circuit diagram of an embodiment of the present invention. 1... Gamma shaping circuit, 2... Gamma compression circuit, 3... Attenuation circuit, 4... White compression circuit, 5... Detection circuit, 6... Mixing circuit, 7... White limiting circuit including white compression. A1, A2...Inverting amplifier.
Claims (1)
信号処理回路において、映像信号をガンマ圧縮す
る回路と映像信号を線形に減衰する減衰回路の各
々の出力を所定の割合で混合する構成のガンマ補
正回路の該減衰回路側に白圧縮回路を設けたこと
を特徴とする映像信号処理回路。 ２ 請求項１記載の映像信号処理回路において、
上記ガンマ補正回路の減衰回路側に設けた白圧縮
回路を、映像信号レベルに応じて、その白圧縮比
が制御される構成としたことを特徴とする映像信
号処理回路。 ３ 請求項１または２記載の映像信号処理回路に
おいて、上記ガンマ補正回路の後段に、固定比率
の白圧縮および白制限を行なう回路を設けたこと
を特徴とする映像信号処理回路。[Claims for Utility Model Registration] 1. In a video signal processing circuit that performs gamma correction and white compression of a video signal, the outputs of the circuit that gamma compresses the video signal and the attenuation circuit that linearly attenuates the video signal are adjusted to predetermined values. A video signal processing circuit characterized in that a white compression circuit is provided on the attenuation circuit side of a gamma correction circuit configured to mix at a ratio. 2. The video signal processing circuit according to claim 1,
A video signal processing circuit characterized in that a white compression circuit provided on the attenuation circuit side of the gamma correction circuit has a white compression ratio controlled in accordance with a video signal level. 3. The video signal processing circuit according to claim 1 or 2, further comprising a circuit for performing fixed ratio white compression and white restriction at a stage subsequent to the gamma correction circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14593289U JPH0384681U (en) | 1989-12-20 | 1989-12-20 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14593289U JPH0384681U (en) | 1989-12-20 | 1989-12-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0384681U true JPH0384681U (en) | 1991-08-28 |
Family
ID=31692549
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14593289U Pending JPH0384681U (en) | 1989-12-20 | 1989-12-20 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0384681U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7782883B2 (en) | 2000-04-06 | 2010-08-24 | The Distribution Systems Research Institute | Terminal-to-terminal communication connection control method using IP transfer network |
-
1989
- 1989-12-20 JP JP14593289U patent/JPH0384681U/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7782883B2 (en) | 2000-04-06 | 2010-08-24 | The Distribution Systems Research Institute | Terminal-to-terminal communication connection control method using IP transfer network |