JPH01135885U - - Google Patents
Info
- Publication number
- JPH01135885U JPH01135885U JP3274788U JP3274788U JPH01135885U JP H01135885 U JPH01135885 U JP H01135885U JP 3274788 U JP3274788 U JP 3274788U JP 3274788 U JP3274788 U JP 3274788U JP H01135885 U JPH01135885 U JP H01135885U
- Authority
- JP
- Japan
- Prior art keywords
- color
- signal
- video signal
- conversion circuit
- composite video
- 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
- 238000006243 chemical reaction Methods 0.000 claims description 6
- 239000002131 composite material Substances 0.000 claims description 6
- 230000001360 synchronised effect Effects 0.000 claims description 3
- 238000005070 sampling Methods 0.000 claims 2
- 238000010586 diagram Methods 0.000 description 3
Landscapes
- Processing Of Color Television Signals (AREA)
Description
第１図は本考案の一実施例の要部概略構成を示
すブロツク図、第２図はそのＰＬＬ型同期回路の
構成を示すブロツク図、第３図は従来のデジタル
テレビジヨン受像機の要部を示すブロツク図、第
４図はカラー複合映像信号の波形図である。
１１……カラー複合映像信号／輝度信号入力端
子、１８……搬送色信号入力端子、１２，１７…
…第１第２Ａ／Ｄ変換回路、２５……デジタル映
像信号処理系。
Fig. 1 is a block diagram showing a schematic configuration of the main parts of an embodiment of the present invention, Fig. 2 is a block diagram showing the structure of its PLL type synchronous circuit, and Fig. 3 is a main part of a conventional digital television receiver. FIG. 4 is a waveform diagram of a color composite video signal. 11...Color composite video signal/luminance signal input terminal, 18...Carrier color signal input terminal, 12, 17...
...First and second A/D conversion circuits, 25...Digital video signal processing system.
Claims (1)
のカラーバースト信号に同期したサンプリングク
ロツクによつてサンプリングしてＡ／Ｄ変換し、
その出力信号をデジタル映像信号処理系に入力し
てカラー画像表示を行なうようにしたデジタルテ
レビジヨン受像機に於いて、 前記カラー複合映像信号から分離されたカラー
バースト信号をＡ／Ｄ変換して前記サンプリング
クロツク作成用のデジタルＰＬＬ型同期回路に供
給する第２のＡ／Ｄ変換回路及びこの第２Ａ／Ｄ
変換回路に接続された切換回路を設け、前記カラ
ー複合映像信号用の第１のＡ／Ｄ変換回路に該複
合映像信号に代えて輝度／色セパレート型式の輝
度信号が入力されたときに、前記切換回路によつ
て前記カラーバースト信号に代えて上記セパレー
ト型式の搬送色信号を前記第２Ａ／Ｄ変換回路に
入力すると共に、この第２Ａ／Ｄ変換回路の出力
信号を前記デジタル映像信号処理系に入力するよ
うにしたことを特徴とするデジタルテレビジヨン
受像機。[Claims for Utility Model Registration] An analog type color composite video signal is sampled by a sampling clock synchronized with a color burst signal in the signal and A/D converted,
In a digital television receiver in which the output signal is input to a digital video signal processing system to display a color image, the color burst signal separated from the color composite video signal is A/D converted and the A second A/D conversion circuit that supplies a digital PLL type synchronous circuit for creating a sampling clock, and this second A/D
A switching circuit connected to the conversion circuit is provided, and when a luminance/color separate type luminance signal is input to the first A/D conversion circuit for the color composite video signal instead of the composite video signal, The switching circuit inputs the separate carrier color signal to the second A/D conversion circuit instead of the color burst signal, and also inputs the output signal of the second A/D conversion circuit to the digital video signal processing system. A digital television receiver characterized in that it is configured to input input data.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3274788U JPH0721013Y2 (en) | 1988-03-11 | 1988-03-11 | Digital television receiver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3274788U JPH0721013Y2 (en) | 1988-03-11 | 1988-03-11 | Digital television receiver |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01135885U true JPH01135885U (en) | 1989-09-18 |
| JPH0721013Y2 JPH0721013Y2 (en) | 1995-05-15 |
Family
ID=31259314
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3274788U Expired - Lifetime JPH0721013Y2 (en) | 1988-03-11 | 1988-03-11 | Digital television receiver |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0721013Y2 (en) |
-
1988
- 1988-03-11 JP JP3274788U patent/JPH0721013Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0721013Y2 (en) | 1995-05-15 |
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