JPS6415359U - - Google Patents
Info
- Publication number
- JPS6415359U JPS6415359U JP10848387U JP10848387U JPS6415359U JP S6415359 U JPS6415359 U JP S6415359U JP 10848387 U JP10848387 U JP 10848387U JP 10848387 U JP10848387 U JP 10848387U JP S6415359 U JPS6415359 U JP S6415359U
- Authority
- JP
- Japan
- Prior art keywords
- signal
- video
- recording
- modulated
- phase
- 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.)
- Granted
Links
- 230000005236 sound signal Effects 0.000 claims description 5
- 230000003595 spectral effect Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 6
- 238000001228 spectrum Methods 0.000 description 2
Landscapes
- Signal Processing For Digital Recording And Reproducing (AREA)
- Signal Processing Not Specific To The Method Of Recording And Reproducing (AREA)
- Recording Or Reproducing By Magnetic Means (AREA)
Description
第１図はこの考案に係る磁気テープ記録再生装
置が適用された映像およびデイジタル音声記録再
生装置の映像および音声ＰＣＭ信号記録・再生系
の構成を示すブロツク図、第２図は同装置におけ
る記録および再生時のＰＳＫ信号スペクトル図、
第３図は従来の磁気テープ記録再生装置の全体構
成を示す概略ブロツク図、第４図は従来の磁気テ
ープ記録再生装置の映像および音声ＰＣＭ信号記
録・再生系の構成を示すブロツク図、第５図は従
来装置における記録および再生時のＰＳＫ信号ス
ペクトル図、第６図は再生イコライザのイコライ
ズ特性図である。
１…映像信号記録処理回路、２…映像信号記録
増幅器、４…磁気テープ、６…映像信号再生処理
回路、９…４相位相変調回路、１０…音声信号記
録増幅器、１２…４相位相復調回路、１９…再生
イコライザ、２４…利得制御回路。なお、図中同
一符号は同一もしくは相当部分を示す。
FIG. 1 is a block diagram showing the configuration of a video and audio PCM signal recording and reproducing system of a video and digital audio recording and reproducing device to which the magnetic tape recording and reproducing device of this invention is applied, and FIG. 2 shows the recording and reproducing system in the same device. PSK signal spectrum diagram during playback,
FIG. 3 is a schematic block diagram showing the overall configuration of a conventional magnetic tape recording and reproducing apparatus, FIG. 4 is a block diagram showing the configuration of a video and audio PCM signal recording/reproducing system of a conventional magnetic tape recording and reproducing apparatus, and FIG. The figure is a PSK signal spectrum diagram during recording and reproduction in a conventional device, and FIG. 6 is an equalization characteristic diagram of a reproduction equalizer. DESCRIPTION OF SYMBOLS 1...Video signal recording processing circuit, 2...Video signal recording amplifier, 4...Magnetic tape, 6...Video signal reproduction processing circuit, 9...4-phase phase modulation circuit, 10...Audio signal recording amplifier, 12...4-phase phase demodulation circuit , 19... Reproduction equalizer, 24... Gain control circuit. Note that the same reference numerals in the figures indicate the same or corresponding parts.
Claims (1)
たデータに変換し、該デイジタル音声信号を位相
変調して磁気テープの深層に記録する一方、映像
信号を周波数変調し、上記位相変調された音声信
号より浅層に記録し、再生時に音声信号系では位
相変調データを位相復調回路の再生イコライザで
等価させるようにした磁気テープ記録再生装置に
おいて、周波数変調された映像信号を入力し、ビ
デオヘツドに映像記録電流を供給する映像信号記
録増幅器と、記録モード信号およびビデオヘツド
切り換え信号に応じて上記映像信号記録増幅器の
利得を制御する利得制御回路とを備え、上記磁気
テープの深層に記録される該位相変調された音声
信号のスペクトル形状が実用上一定になるように
上記映像信号記録増幅器を制御するように設定し
たことを特徴とする磁気テープ記録再生装置。 A digital audio signal is converted into data corresponding to a video field, and the digital audio signal is phase-modulated and recorded in a deeper layer of the magnetic tape, while the video signal is frequency-modulated and recorded in a shallower layer than the phase-modulated audio signal. In a magnetic tape recording and reproducing device that records and reproduces audio data, the phase modulated data is equalized by a reproduction equalizer in a phase demodulation circuit in the audio signal system.A frequency modulated video signal is input and a video recording current is supplied to the video head. and a gain control circuit that controls the gain of the video signal recording amplifier according to a recording mode signal and a video head switching signal, and a gain control circuit that controls the gain of the video signal recording amplifier according to a recording mode signal and a video head switching signal. 1. A magnetic tape recording and reproducing apparatus, characterized in that the video signal recording amplifier is controlled so that the spectral shape of the signal is practically constant.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10848387U JPH0614243Y2 (en) | 1987-07-14 | 1987-07-14 | Magnetic tape recording / reproducing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10848387U JPH0614243Y2 (en) | 1987-07-14 | 1987-07-14 | Magnetic tape recording / reproducing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6415359U true JPS6415359U (en) | 1989-01-26 |
| JPH0614243Y2 JPH0614243Y2 (en) | 1994-04-13 |
Family
ID=31343856
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10848387U Expired - Lifetime JPH0614243Y2 (en) | 1987-07-14 | 1987-07-14 | Magnetic tape recording / reproducing device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0614243Y2 (en) |
-
1987
- 1987-07-14 JP JP10848387U patent/JPH0614243Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0614243Y2 (en) | 1994-04-13 |
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