JPS6397961U - - Google Patents
Info
- Publication number
- JPS6397961U JPS6397961U JP19254486U JP19254486U JPS6397961U JP S6397961 U JPS6397961 U JP S6397961U JP 19254486 U JP19254486 U JP 19254486U JP 19254486 U JP19254486 U JP 19254486U JP S6397961 U JPS6397961 U JP S6397961U
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- phase
- detection
- vertical synchronization
- comparison
- 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
- 238000001514 detection method Methods 0.000 claims description 7
- 230000010355 oscillation Effects 0.000 claims description 5
- 238000010586 diagram Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 1
Landscapes
- Details Of Television Scanning (AREA)
- Synchronizing For Television (AREA)
Description
第１図はこの考案の垂直同期補正回路の一実施
例を示す図、第２図ａ，ｂは夫々第１図における
垂直出力回路の出力、及び水平発振回路の出力波
形図である。
１……同期分離回路、２……垂直発振回路、３
……垂直出力回路、４……水平発振回路、５……
垂直偏向走査開始検出回路、６……位相検出・比
較回路。
FIG. 1 is a diagram showing an embodiment of the vertical synchronization correction circuit of this invention, and FIGS. 2a and 2b are waveform diagrams of the output of the vertical output circuit and the output waveform of the horizontal oscillation circuit in FIG. 1, respectively. 1...Synchronization separation circuit, 2...Vertical oscillation circuit, 3
...Vertical output circuit, 4...Horizontal oscillation circuit, 5...
Vertical deflection scan start detection circuit, 6...phase detection/comparison circuit.
Claims (1)
を補正する垂直同期補正回路であつて、各々のフ
イールドの走査開始点を検査する検出回路と、該
検出回路の走査開始点で水平発振信号の位相を１
フイールド前の位相と比較する位相検出・比較回
路とから成り、該位相検出・比較回路の比較出力
により垂直発振信号を制御するようにしたことを
特徴とする垂直同期補正回路。 This vertical synchronization correction circuit corrects vertical synchronization between fields that perform interlaced scanning, and includes a detection circuit that inspects the scan start point of each field, and a detection circuit that adjusts the phase of the horizontal oscillation signal to 1 at the scan start point of the detection circuit.
1. A vertical synchronization correction circuit comprising a phase detection/comparison circuit that compares the phase with a phase before a field, and a vertical oscillation signal is controlled by the comparison output of the phase detection/comparison circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19254486U JPS6397961U (en) | 1986-12-15 | 1986-12-15 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19254486U JPS6397961U (en) | 1986-12-15 | 1986-12-15 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6397961U true JPS6397961U (en) | 1988-06-24 |
Family
ID=31147722
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19254486U Pending JPS6397961U (en) | 1986-12-15 | 1986-12-15 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6397961U (en) |
-
1986
- 1986-12-15 JP JP19254486U patent/JPS6397961U/ja active Pending