JPS6284286U - - Google Patents
Info
- Publication number
- JPS6284286U JPS6284286U JP17436485U JP17436485U JPS6284286U JP S6284286 U JPS6284286 U JP S6284286U JP 17436485 U JP17436485 U JP 17436485U JP 17436485 U JP17436485 U JP 17436485U JP S6284286 U JPS6284286 U JP S6284286U
- Authority
- JP
- Japan
- Prior art keywords
- frequency conversion
- signal
- circuit
- output signal
- phase switching
- 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
- 238000006243 chemical reaction Methods 0.000 claims description 7
- 230000001934 delay Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
Description
第1図は本考案の一実施例を示す回路図、第2
図は従来の低域変換回路を示す回路図、第3図の
イは位相切替回路5の出力信号、ロはLPF4の
出力信号、ハはBPF2の出力信号を示す波形図
である。
主な図番の説明、11…遅延回路、13…位相
切替回路、14…第2周波数変換回路、15…L
PF、16…BPF、17…第1周波数変換回路
。
Figure 1 is a circuit diagram showing one embodiment of the present invention;
The figure is a circuit diagram showing a conventional low-frequency conversion circuit, and in FIG. Explanation of main drawing numbers, 11...Delay circuit, 13...Phase switching circuit, 14...Second frequency conversion circuit, 15...L
PF, 16... BPF, 17... first frequency conversion circuit.
Claims (1)
タを介して第2周波数変換回路に供給し、該第2
周波数変換回路からの出力信号をバンドパスフイ
ルタを介して第1周波数変換回路に供給すること
により周波数変換を行うビデオテープレコーダに
おいて、前記位相切替回路の切替信号を遅らせる
遅延回路を有し、位相切替時のローパスフイルタ
の出力信号の乱れが、クロマ信号中のバースト信
号に影響を及ぼすことを防止したことを特徴とす
るビデオテープレコーダ。 The output signal from the phase switching circuit is supplied to a second frequency conversion circuit via a low-pass filter, and
A video tape recorder that performs frequency conversion by supplying an output signal from a frequency conversion circuit to a first frequency conversion circuit via a bandpass filter, comprising a delay circuit that delays a switching signal of the phase switching circuit, and a phase switching circuit. A video tape recorder characterized in that disturbances in the output signal of a low-pass filter are prevented from affecting a burst signal in a chroma signal.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP17436485U JPS6284286U (en) | 1985-11-13 | 1985-11-13 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP17436485U JPS6284286U (en) | 1985-11-13 | 1985-11-13 |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6284286U true JPS6284286U (en) | 1987-05-29 |
Family
ID=31112676
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP17436485U Pending JPS6284286U (en) | 1985-11-13 | 1985-11-13 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6284286U (en) |
-
1985
- 1985-11-13 JP JP17436485U patent/JPS6284286U/ja active Pending
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