JPH0438176U - - Google Patents
Info
- Publication number
- JPH0438176U JPH0438176U JP1990079485U JP7948590U JPH0438176U JP H0438176 U JPH0438176 U JP H0438176U JP 1990079485 U JP1990079485 U JP 1990079485U JP 7948590 U JP7948590 U JP 7948590U JP H0438176 U JPH0438176 U JP H0438176U
- Authority
- JP
- Japan
- Prior art keywords
- pulse
- horizontal
- field discrimination
- field
- shift register
- 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
- 230000010355 oscillation Effects 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000010587 phase diagram Methods 0.000 description 1
Landscapes
- Details Of Television Scanning (AREA)
- Synchronizing For Television (AREA)
Description
第１図は本考案の一実施例を示すフイールド判
別インタフエース回路のブロツク図、第２図は同
第１図のフイールド判別を説明するためのタイミ
ングチヤート、第３図は同第１図の位相シフト時
のフイールド判別を説明するためのタイミングチ
ヤート、第４図は従来例のフイールド判別を説明
するためのタイミングチヤートである。
１は単安定マルチバイブレータ、２はシフトレ
ジスタ、３はフイールド判別回路、ＨＤは水平ド
ライブパルス、ＶＤは垂直ドライブパルス、２ｆ
Ｈは２倍速水平発振パルスである。
FIG. 1 is a block diagram of a field discrimination interface circuit showing an embodiment of the present invention, FIG. 2 is a timing chart for explaining the field discrimination shown in FIG. 1, and FIG. 3 is a phase diagram of the field discrimination shown in FIG. 1. A timing chart for explaining field discrimination during shifting. FIG. 4 is a timing chart for explaining field discrimination in a conventional example. 1 is a monostable multivibrator, 2 is a shift register, 3 is a field discrimination circuit, HD is a horizontal drive pulse, VD is a vertical drive pulse, 2f
H is a double speed horizontal oscillation pulse.
Claims (1)
イールド情報を必要とするクリアビジヨン等にお
いて、水平ドライブパルスを単安定マルチバイブ
レータに接続し、垂直ドライブパルスを倍速水平
発振パルスでカウントするシフトレジスタに接続
し、同シフトレジスタ出力の位相シフトした垂直
パルスと前記単安定マルチバイブレータ出力と水
平パルスとをフイールド判別回路に接続し、同フ
イールド判別回路より偶数／奇数フイールド情報
を出力してなるテレビ受像機。 For clear vision, etc., which has a field discrimination function and requires field information displayed on multiple screens, the horizontal drive pulse is connected to a monostable multivibrator, and the vertical drive pulse is connected to a shift register that counts double-speed horizontal oscillation pulses. A television receiver comprising a phase-shifted vertical pulse of the shift register output, the monostable multivibrator output, and a horizontal pulse connected to a field discrimination circuit, and the field discrimination circuit outputs even/odd field information.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1990079485U JPH0438176U (en) | 1990-07-25 | 1990-07-25 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1990079485U JPH0438176U (en) | 1990-07-25 | 1990-07-25 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0438176U true JPH0438176U (en) | 1992-03-31 |
Family
ID=31623688
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1990079485U Pending JPH0438176U (en) | 1990-07-25 | 1990-07-25 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0438176U (en) |
-
1990
- 1990-07-25 JP JP1990079485U patent/JPH0438176U/ja active Pending
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