JPH02147986U - - Google Patents
Info
- Publication number
- JPH02147986U JPH02147986U JP5583489U JP5583489U JPH02147986U JP H02147986 U JPH02147986 U JP H02147986U JP 5583489 U JP5583489 U JP 5583489U JP 5583489 U JP5583489 U JP 5583489U JP H02147986 U JPH02147986 U JP H02147986U
- Authority
- JP
- Japan
- Prior art keywords
- signal
- luminance signal
- gamma
- primary color
- pass filter
- 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
Landscapes
- Processing Of Color Television Signals (AREA)
Description
第１図は本考案の全体構成を示すブロツク図、
第２図は従来の解像度補償方式のブロツク図であ
る。
１〜３，６：ガンマ補正回路、４，５：マトリ
ツクス回路、７，８：低域フイルタ、９：高域フ
イルタ、１６：Ｉ信号低域フイルタ、１７：Ｑ信
号低域フイルタ。
Figure 1 is a block diagram showing the overall configuration of the present invention.
FIG. 2 is a block diagram of a conventional resolution compensation system. 1 to 3, 6: gamma correction circuit, 4, 5: matrix circuit, 7, 8: low pass filter, 9: high pass filter, 16: I signal low pass filter, 17: Q signal low pass filter.
Claims (1)
のマトリツクス回路で輝度信号を作り、これをガ
ンマ補正して輝度信号Ｙ１／γとし、さらに低域
フイルタを通して輝度信号Ｙ１／γＬとし、上記
３原色信号をそれぞれガンマ補正回路でガンマ補
正して、Ｒ′，Ｇ′，Ｂ′とし、これ等から第２
のマトリツクス回路で輝度信号Ｙ′を作り、輝度
信号Ｙ′を低域フイルタを通してＹ′Ｌ、高域フ
イルタを通してＹ′Ｈとし、輝度信号Ｙ１／γＬ
を輝度信号Ｙ′Ｌで割算を行ない、劣化係数を求
め、この係数と上記Ｙ′Ｈを掛け、得られたＹ′
Ｈ・Ｙ１／γＬ／Ｙ′Ｌに係数に０．３を掛けて
Ｒ′信号に、０．５９を掛けてＧ′信号に、０．
１１を掛けてＢ′信号に加えることにより、高域
輝度情報の補償された３原色信号を作ることを特
徴とする解像度補償装置。 ２ 請求項１において、入力信号としてガンマ補
正された３原色信号Ｒ′，Ｇ′，Ｂ′を使用し、
上記３原色信号のためのガンマ補正回路を除いて
直接上記第２のマトリツクス回路に加えるととも
に、上記各入力信号をそれぞれ逆ガンマ回路を介
して上記第１のマトリツクス回路に加えるように
したことを特徴とする解像度補償装置。[Claims for Utility Model Registration] 1. From the linear three primary color signals that are the input signals, the first
The matrix circuit generates a luminance signal, which is gamma-corrected to produce a luminance signal Y 1 /γ, which is then passed through a low-pass filter to produce a luminance signal Y 1 /γL, and each of the three primary color signals is gamma-corrected by a gamma correction circuit. , R', G', B', and from these the second
The luminance signal Y' is generated by a matrix circuit, and the luminance signal Y' is passed through a low-pass filter as Y'L, and passed through a high-pass filter as Y'H, and the luminance signal Y 1 /γL
is divided by the luminance signal Y'L to obtain the deterioration coefficient, and this coefficient is multiplied by the above Y'H to obtain the Y'
H・Y 1 /γL/Y′L is multiplied by a coefficient of 0.3 to obtain the R′ signal, multiplied by 0.59 to obtain the G′ signal, and 0.
1. A resolution compensating device characterized in that a three primary color signal with high-range luminance information compensated for is created by multiplying by 11 and adding it to a B' signal. 2. In claim 1, gamma-corrected three primary color signals R', G', B' are used as input signals,
The gamma correction circuit for the three primary color signals is directly added to the second matrix circuit, and each of the input signals is applied to the first matrix circuit via an inverse gamma circuit. resolution compensation device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5583489U JPH02147986U (en) | 1989-05-17 | 1989-05-17 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5583489U JPH02147986U (en) | 1989-05-17 | 1989-05-17 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02147986U true JPH02147986U (en) | 1990-12-17 |
Family
ID=31579137
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5583489U Pending JPH02147986U (en) | 1989-05-17 | 1989-05-17 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02147986U (en) |
-
1989
- 1989-05-17 JP JP5583489U patent/JPH02147986U/ja active Pending
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