JPS6230486U - - Google Patents
Info
- Publication number
- JPS6230486U JPS6230486U JP12061885U JP12061885U JPS6230486U JP S6230486 U JPS6230486 U JP S6230486U JP 12061885 U JP12061885 U JP 12061885U JP 12061885 U JP12061885 U JP 12061885U JP S6230486 U JPS6230486 U JP S6230486U
- Authority
- JP
- Japan
- Prior art keywords
- signal
- phase
- demodulator
- delayed
- phase shift
- 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
- 230000010363 phase shift Effects 0.000 claims description 4
- 230000003111 delayed effect Effects 0.000 claims 3
- 238000001514 detection method Methods 0.000 claims 3
- 238000011144 upstream manufacturing Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Processing Of Color Television Signals (AREA)
Description
第１図は本考案の１実施例のブロツク図、第２
図は従来例のブロツク図である。
１……１Ｈ遅延線、２……マツチングコイル、
３……Ｒ―Ｙ復調器、４……Ｂ―Ｙ復調器、１１
……バーストゲート回路、１２……位相ズレ検出
器、１３，１４……位相制御回路。
Figure 1 is a block diagram of one embodiment of the present invention;
The figure is a block diagram of a conventional example. 1... 1H delay line, 2... Matching coil,
3...RY demodulator, 4...BY demodulator, 11
... Burst gate circuit, 12 ... Phase shift detector, 13, 14 ... Phase control circuit.
Claims (1)
線を通して１Ｈ遅延した信号と加減算し、該加算
信号をＲ―Ｙ復調器にて復調してＲ―Ｙ色差信号
を得、一方減算信号をＢ―Ｙ復調器にて復調して
Ｂ―Ｙ色差信号を得る復調回路において、前記１
Ｈ遅延線を通して１Ｈ遅延された遅延信号中のバ
ースト信号の位相ズレを検出する位相ズレ検出手
段と、前記Ｒ―Ｙ復調器の前段に配置され前記位
相ズレ検出手段の検出出力に基いて前記加算信号
の位相を制御する第１の位相制御手段と、前記Ｂ
―Ｙ復調器の前段に配置され前記位相ズレ検出手
段の検出出力に基いて前記減算信号の位相を制御
する第２の位相制御手段とを具備してなるＰＡＬ
方式カラーテレビジヨン信号復調回路。 A PAL color television signal is added to and subtracted from a signal delayed by 1H through a 1H delay line, and the added signal is demodulated by an RY demodulator to obtain an RY color difference signal, while the subtracted signal is sent to a BY demodulator. In the demodulation circuit that demodulates the BY color difference signal in the above-mentioned 1.
phase shift detection means for detecting a phase shift of a burst signal in a delayed signal delayed by 1H through an H delay line; a first phase control means for controlling the phase of the signal;
- a PAL comprising: second phase control means disposed upstream of the Y demodulator and controlling the phase of the subtraction signal based on the detection output of the phase shift detection means;
color television signal demodulation circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12061885U JPH0346628Y2 (en) | 1985-08-05 | 1985-08-05 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12061885U JPH0346628Y2 (en) | 1985-08-05 | 1985-08-05 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6230486U true JPS6230486U (en) | 1987-02-24 |
| JPH0346628Y2 JPH0346628Y2 (en) | 1991-10-02 |
Family
ID=31009100
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12061885U Expired JPH0346628Y2 (en) | 1985-08-05 | 1985-08-05 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0346628Y2 (en) |
-
1985
- 1985-08-05 JP JP12061885U patent/JPH0346628Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0346628Y2 (en) | 1991-10-02 |