JPH0376208U - - Google Patents
Info
- Publication number
- JPH0376208U JPH0376208U JP13666989U JP13666989U JPH0376208U JP H0376208 U JPH0376208 U JP H0376208U JP 13666989 U JP13666989 U JP 13666989U JP 13666989 U JP13666989 U JP 13666989U JP H0376208 U JPH0376208 U JP H0376208U
- Authority
- JP
- Japan
- Prior art keywords
- recording
- signal
- magnetic tape
- audio signal
- frequency
- 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
- 230000005236 sound signal Effects 0.000 claims description 13
- 238000010586 diagram Methods 0.000 description 4
- 238000001228 spectrum Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 description 1
Description
第１図はこの考案の一実施例による磁気テープ
記録再生装置を示す構成図、第２図はこの考案に
よるＦＭ音声信号の交流バイアス記録の効果を説
明するためのスペクトル図、第３図は従来の磁気
テープ記録再生装置の構成図、第４図は従来の磁
気テープ記録再生装置の映像信号およびＦＭ音声
信号のスペクトル図、第５図は映像信号およびＦ
Ｍ音声信号の記録跡を説明するための磁気テープ
の断面図、第６図は従来の磁気テープ記録再生装
置におけるＦＭ音声信号の高調波歪が映像信号に
与える妨害を説明するためのスペクトル図である
。
図中、１……映像信号記録処理回路、２……映
像信号記録増幅器、３……回転ドラム、４……映
像ヘツド、５……磁気テープ、６……映像信号再
生増幅器、７……映像信号再生処理回路、８……
ＦＭ音声信号記録処理回路、９……加算回路、１
０……ＦＭ音声信号記録増幅器、１１……ＦＭＡ
ヘツド、１２……ＦＭ音声信号再生増幅器、１３
……帯域通過フイルタ、１４……ＦＭ音声信号再
生処理回路、１５……交流バイアス信号発生回路
、１６……加算回路である。なお、各図中、同一
符号は同一または相当部分を示す。
Fig. 1 is a block diagram showing a magnetic tape recording/reproducing apparatus according to an embodiment of this invention, Fig. 2 is a spectrum diagram for explaining the effect of AC bias recording of FM audio signals according to this invention, and Fig. 3 is a conventional one. FIG. 4 is a block diagram of a conventional magnetic tape recording and reproducing device, and FIG. 5 is a spectrum diagram of a video signal and an FM audio signal of the conventional magnetic tape recording and reproducing device.
FIG. 6 is a cross-sectional view of a magnetic tape to explain the recording trace of an M audio signal, and FIG. be. In the figure, 1...Video signal recording processing circuit, 2...Video signal recording amplifier, 3...Rotating drum, 4...Video head, 5...Magnetic tape, 6...Video signal reproducing amplifier, 7...Video Signal reproduction processing circuit, 8...
FM audio signal recording processing circuit, 9...addition circuit, 1
0...FM audio signal recording amplifier, 11...FMA
Head, 12...FM audio signal reproduction amplifier, 13
. . . band pass filter, 14 . . . FM audio signal reproduction processing circuit, 15 . . . AC bias signal generation circuit, 16 . In each figure, the same reference numerals indicate the same or corresponding parts.
Claims (1)
とを合成した映像信号を磁気テープに記録し再生
する手段と、音声信号を周波数変調して得られた
ＦＭ音声信号を上記磁気テープに記録し再生する
手段とを備え、各々アジマス角の異なる音声用ヘ
ツドと映像ヘツドにより上記ＦＭ音声信号と上記
映像信号を順次重ねて記録する回転ヘツド形の磁
気テープ記録再生装置において、上記ＦＭ音声信
号の搬送波周波数の３倍以上の周波数を持つ交流
バイアス信号を発生する手段と、上記ＦＭ音声信
号に上記交流バイアス信号を重畳するための交流
バイアス加算手段と、上記交流バイアス加算手段
により得られた信号を上記音声用ヘツドに供給す
る手段とを備えたことを特徴とする磁気テープ記
録再生装置。 A means for recording and reproducing on a magnetic tape a video signal which is a combination of a frequency modulated luminance signal and a low frequency converted color signal, and recording and reproducing an FM audio signal obtained by frequency modulating an audio signal on the magnetic tape. In a rotating head type magnetic tape recording and reproducing apparatus for recording the FM audio signal and the video signal sequentially in an overlapping manner using an audio head and a video head having different azimuth angles, the carrier wave frequency of the FM audio signal is means for generating an AC bias signal having a frequency three times or more higher than that of the FM audio signal; AC bias addition means for superimposing the AC bias signal on the FM audio signal; 1. A magnetic tape recording and reproducing apparatus, comprising means for supplying magnetic tape to a recording head.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13666989U JPH0376208U (en) | 1989-11-24 | 1989-11-24 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13666989U JPH0376208U (en) | 1989-11-24 | 1989-11-24 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0376208U true JPH0376208U (en) | 1991-07-31 |
Family
ID=31683866
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13666989U Pending JPH0376208U (en) | 1989-11-24 | 1989-11-24 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0376208U (en) |
-
1989
- 1989-11-24 JP JP13666989U patent/JPH0376208U/ja active Pending
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