JPH02130163U - - Google Patents
Info
- Publication number
- JPH02130163U JPH02130163U JP3859389U JP3859389U JPH02130163U JP H02130163 U JPH02130163 U JP H02130163U JP 3859389 U JP3859389 U JP 3859389U JP 3859389 U JP3859389 U JP 3859389U JP H02130163 U JPH02130163 U JP H02130163U
- Authority
- JP
- Japan
- Prior art keywords
- parabolic voltage
- amplitude modulation
- vertical deflection
- modulation circuit
- circuit
- 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
- 241000226585 Antennaria plantaginifolia Species 0.000 claims description 5
- 238000010586 diagram Methods 0.000 description 5
- 230000003321 amplification Effects 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
Landscapes
- Details Of Television Scanning (AREA)
Description
第１図は、この考案の水平糸巻き歪み補正装置
の一実施例を示す回路構成図、第２，３図は、そ
れぞれ第１図に示した自動利得制御回路の差動増
幅特性図及び利得制御特性図、第４図は、従来の
水平糸巻き歪み補正装置の一例を示す回路構成図
である。
４……パラボラ電圧発生回路、７……振幅変調
回路、１１……水平糸巻き歪み補正装置、１２…
…自動利得制御回路、１３……差動増幅器、１４
……ＦＶ変換器。
Fig. 1 is a circuit configuration diagram showing an embodiment of the horizontal pincushion distortion correction device of this invention, and Figs. 2 and 3 are differential amplification characteristic diagrams and gain control diagrams of the automatic gain control circuit shown in Fig. 1, respectively. The characteristic diagram, FIG. 4, is a circuit configuration diagram showing an example of a conventional horizontal pincushion distortion correction device. 4... Parabolic voltage generation circuit, 7... Amplitude modulation circuit, 11... Horizontal pincushion distortion correction device, 12...
...Automatic gain control circuit, 13...Differential amplifier, 14
...FV converter.
Claims (1)
鋸歯状の垂直偏向電流を時間積分し、水平糸巻き
歪み補正用のパラボラ電圧を発生するパラボラ電
圧発生回路と、このパラボラ電圧発生回路から供
給されるパラボラ電圧をもつて水平偏向電流を振
幅変調する振幅変調回路と、この振幅変調回路と
前記パラボラ電圧発生回路の間に設けられ、垂直
偏向周波数にほぼ比例するごとく利得を可変し、
前記振幅変調回路に供給されるパラボラ電圧の波
高値を、垂直偏向周波数によらずほぼ一定に制御
する自動利得制御回路を具備する水平糸巻き歪み
補正装置。 A parabolic voltage generation circuit that time-integrates a sawtooth vertical deflection current whose peak value changes in inverse proportion to the vertical deflection frequency and generates a parabolic voltage for horizontal pincushion distortion correction, and a parabolic voltage supplied from this parabolic voltage generation circuit. an amplitude modulation circuit that modulates the amplitude of the horizontal deflection current with a voltage; and an amplitude modulation circuit that is provided between the amplitude modulation circuit and the parabolic voltage generation circuit, and whose gain is varied approximately in proportion to the vertical deflection frequency;
A horizontal pincushion distortion correction device comprising an automatic gain control circuit that controls the peak value of the parabolic voltage supplied to the amplitude modulation circuit to be substantially constant regardless of the vertical deflection frequency.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3859389U JPH02130163U (en) | 1989-03-31 | 1989-03-31 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3859389U JPH02130163U (en) | 1989-03-31 | 1989-03-31 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02130163U true JPH02130163U (en) | 1990-10-26 |
Family
ID=31546735
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3859389U Pending JPH02130163U (en) | 1989-03-31 | 1989-03-31 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02130163U (en) |
-
1989
- 1989-03-31 JP JP3859389U patent/JPH02130163U/ja active Pending
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