JPS63121988U - - Google Patents
Info
- Publication number
- JPS63121988U JPS63121988U JP1306887U JP1306887U JPS63121988U JP S63121988 U JPS63121988 U JP S63121988U JP 1306887 U JP1306887 U JP 1306887U JP 1306887 U JP1306887 U JP 1306887U JP S63121988 U JPS63121988 U JP S63121988U
- Authority
- JP
- Japan
- Prior art keywords
- digital
- color
- analog
- color subcarrier
- signal
- 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.)
- Granted
Links
- 238000000926 separation method Methods 0.000 claims description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
Landscapes
- Processing Of Color Television Signals (AREA)
Description
第１図は本考案の一実施例に係わるテレビジヨ
ン信号のデイジタル処理装置の構成を示すブロツ
ク図、第２図は従来装置の構成を示すブロツク図
である。
ＩＮ……入力端子、１……Ａ／Ｄ変換回路、２
……Ｙ／Ｃ分離回路、３……色復調回路、４……
色副搬送波再生回路、５……Ａ／Ｄ変換回路、６
……遅延回路、７……タイミング回路、８……ク
ロツク作成回路、９……ＡＣＣ回路、９ａ……Ａ
ＣＣ検波回路、９ｂ……アナログ乗算器、Ｏ１〜
Ｏ３……出力端子。
FIG. 1 is a block diagram showing the configuration of a television signal digital processing device according to an embodiment of the present invention, and FIG. 2 is a block diagram showing the configuration of a conventional device. IN...Input terminal, 1...A/D conversion circuit, 2
...Y/C separation circuit, 3...Color demodulation circuit, 4...
Color subcarrier regeneration circuit, 5...A/D conversion circuit, 6
...Delay circuit, 7...Timing circuit, 8...Clock creation circuit, 9...ACC circuit, 9a...A
CC detection circuit, 9b...Analog multiplier, O1~
O3...Output terminal.
Claims (1)
号に変換しつつ輝度信号と搬送色信号とに分離す
るデイジタルＹ／Ｃ分離部と、 アナログ・ビデオ信号中に含まれるカラーバー
スト信号に位相ロツクさせつつアナログ色副搬送
波を再生し、これをＡ／Ｄ変換してデイジタル色
副搬送波を作成するデイジタル色副搬送波作成部
と、 前記デイジタルＹ／Ｃ分離部から出力される搬
送色信号と前記デイジタル色副搬送波作成部から
出力されるデイジタル色副搬送波とから第１，第
２のデイジタル色信号を復調するデイジタル色復
調部と、 前記アナログ・ビデオ信号中に含まれるカラー
バースト信号の振幅を検出し、この検出値が大で
あるほど小となるように前記再生アナログ色副搬
送波の振幅を変化させるアナログＡＣＣ部とを備
えたことを特徴とするテレビジヨン信号のデイジ
タル処理装置。[Claims for Utility Model Registration] A digital Y/C separation unit that converts an analog video signal into a digital video signal and separates it into a luminance signal and a carrier color signal, and a color burst signal included in the analog video signal. a digital color subcarrier generation unit that reproduces an analog color subcarrier while phase-locking it and A/D converts it to create a digital color subcarrier; and a carrier color signal output from the digital Y/C separation unit. and a digital color demodulation unit that demodulates first and second digital color signals from the digital color subcarrier output from the digital color subcarrier generation unit; and the amplitude of the color burst signal included in the analog video signal. and an analog ACC section that changes the amplitude of the reproduced analog color subcarrier so that the larger the detected value is, the smaller the amplitude of the reproduced analog color subcarrier is.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1306887U JPH0644219Y2 (en) | 1987-01-31 | 1987-01-31 | Digital processing device for television signals |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1306887U JPH0644219Y2 (en) | 1987-01-31 | 1987-01-31 | Digital processing device for television signals |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63121988U true JPS63121988U (en) | 1988-08-08 |
| JPH0644219Y2 JPH0644219Y2 (en) | 1994-11-14 |
Family
ID=30801785
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1306887U Expired - Lifetime JPH0644219Y2 (en) | 1987-01-31 | 1987-01-31 | Digital processing device for television signals |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0644219Y2 (en) |
-
1987
- 1987-01-31 JP JP1306887U patent/JPH0644219Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0644219Y2 (en) | 1994-11-14 |
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