JPH0181088U - - Google Patents
Info
- Publication number
- JPH0181088U JPH0181088U JP1987036097U JP3609787U JPH0181088U JP H0181088 U JPH0181088 U JP H0181088U JP 1987036097 U JP1987036097 U JP 1987036097U JP 3609787 U JP3609787 U JP 3609787U JP H0181088 U JPH0181088 U JP H0181088U
- Authority
- JP
- Japan
- Prior art keywords
- signal
- noise
- video signal
- noise reducer
- compressed
- 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
- Picture Signal Circuits (AREA)
- Color Television Systems (AREA)
Description
第１図は本考案の高品位ＴＶ受信機の一実施例
を示すブロツク図、第２図はそのノイズリデユー
サ回路のブロツク図、第３図はノイズ低減特性を
示す特性図、第４図ａ，ｂはノイズレベル判別回
路のそれぞれ異なる二つの具体例を示すブロツク
図、第５図はその判別特性を示す特性図である。
３…ノイズリデユーサ回路、８…ノイズリレベ
ル判別回路。
Fig. 1 is a block diagram showing an embodiment of the high-quality TV receiver of the present invention, Fig. 2 is a block diagram of its noise reducer circuit, Fig. 3 is a characteristic diagram showing noise reduction characteristics, and Figs. 4 a and b. 5 is a block diagram showing two different concrete examples of the noise level discrimination circuit, and FIG. 5 is a characteristic diagram showing its discrimination characteristics. 3...Noise reducer circuit, 8...Noise relevel discrimination circuit.
Claims (1)
Ｉエンコードされ且つ多重サブサンプル処理によ
り帯域圧縮され、且つ、垂直ブランキング期間内
に一定のクランプ用基準レベル信号が挿入された
高品位映像信号を受信し、この高品位映像信号を
Ａ／Ｄ変換して得たデジタル映像信号を動き補正
型のノイズリデユーサに通したのちＴＣＩデコー
ドするようにした受信機に於いて、前記基準レベ
ル信号中に混入しているノイズの大きさを検出し
、その検出出力に応じて前記ノイズリデユーサ内
のノイズレベル算出用の係数乗算器に設定される
係数を切換えるようにしたことを特徴とする高品
位テレビ受信機。 The chrominance signal is time-domain compressed and sent to the TC along with the luminance signal.
A high-definition video signal that has been I-encoded and band-compressed by multiplex sub-sampling processing, and a fixed reference level signal for clamping is inserted within the vertical blanking period is received, and this high-definition video signal is A/D converted. A receiver that passes the obtained digital video signal through a motion compensation type noise reducer and then performs TCI decoding, detects the magnitude of noise mixed in the reference level signal and outputs the detected signal. A high-definition television receiver characterized in that a coefficient set in a coefficient multiplier for noise level calculation in the noise reducer is switched according to the noise level calculation coefficient multiplier in the noise reducer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987036097U JPH0181088U (en) | 1987-02-06 | 1987-03-12 |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1700987 | 1987-02-06 | ||
| JP1987036097U JPH0181088U (en) | 1987-02-06 | 1987-03-12 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0181088U true JPH0181088U (en) | 1989-05-31 |
Family
ID=31717359
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1987036097U Pending JPH0181088U (en) | 1987-02-06 | 1987-03-12 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0181088U (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6253079A (en) * | 1985-09-02 | 1987-03-07 | Nec Home Electronics Ltd | Muse-system television system, |
-
1987
- 1987-03-12 JP JP1987036097U patent/JPH0181088U/ja active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6253079A (en) * | 1985-09-02 | 1987-03-07 | Nec Home Electronics Ltd | Muse-system television system, |
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