JPS6415360U - - Google Patents
Info
- Publication number
- JPS6415360U JPS6415360U JP10848487U JP10848487U JPS6415360U JP S6415360 U JPS6415360 U JP S6415360U JP 10848487 U JP10848487 U JP 10848487U JP 10848487 U JP10848487 U JP 10848487U JP S6415360 U JPS6415360 U JP S6415360U
- Authority
- JP
- Japan
- Prior art keywords
- recording
- phase
- audio signal
- modulated
- equalizer
- 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 7
- 238000001228 spectrum Methods 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 7
Landscapes
- Signal Processing For Digital Recording And Reproducing (AREA)
Description
第１図はこの考案に係る磁気記録再生装置が適
用された映像およびデイジタル音声記録再生装置
の音声ＰＣＭ信号記録・再生系を示すブロツク図
、第２図は同装置における記録および再生時のＰ
ＳＫ信号スペクトル図、第３図は同装置における
記録イコライザおよび再生イコライザのイコライ
ズ特性図、第４図は従来の磁気記録再生装置の全
体構成を示すブロツク図、第５図は従来装置の音
声ＰＣＭ信号記録・再生系のブロツク図、第６図
は従来の記録および再生時ＰＳＫ信号スペクトル
図、第７図は従来の再生イコライザのイコライズ
特性図である。
４…磁気テープ、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…記録イコライザ
、２５…切り換えスイツチ。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 audio PCM signal recording/reproducing system of a video and digital audio recording/reproducing apparatus to which the magnetic recording/reproducing apparatus according to the invention is applied, and Fig. 2 shows the PCM signal recording and reproducing system during recording and reproduction in the same apparatus.
SK signal spectrum diagram, Figure 3 is an equalization characteristic diagram of the recording equalizer and reproduction equalizer in the same device, Figure 4 is a block diagram showing the overall configuration of a conventional magnetic recording and reproducing device, and Figure 5 is an audio PCM signal of the conventional device. FIG. 6 is a block diagram of a recording/reproduction system, FIG. 6 is a conventional PSK signal spectrum diagram during recording and reproduction, and FIG. 7 is an equalization characteristic diagram of a conventional reproduction equalizer. 4... Magnetic tape, 9... Four-phase phase modulation circuit, 10
...Audio signal recording amplifier, 12...Four-phase phase demodulation circuit, 19...Reproduction equalizer, 24...Recording equalizer, 25...Switching switch. 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、該デイジタル音声データを位
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、記録モードに対応して上記位相変調さ
れた音声信号の記録周波数特性および記録電流特
性を制御する記録イコライザと、この記録イコラ
イザを上記記録モードに対応して選択する記録イ
コライズ特性選択用の切り換えスイツチと、この
切り換えスイツチを経た出力を増幅してオーデイ
オヘツドに電流を供給する音声信号記録増幅器と
を備え、上記記録イコライザに、上記記録モード
のいずれにおいても、上記磁気テープ上に記録さ
れ再生される該位相変調された音声信号のスペク
トルが実用上一定になる特性を持たせたことを特
徴とする磁気テープ記録再生装置。 The digital audio signal is converted into data corresponding to the video field, and the digital audio data is phase-modulated and recorded in the deep layer of the magnetic tape, while the video signal is frequency-modulated and recorded in the shallower layer than the phase-modulated audio signal. In a magnetic tape recording and reproducing apparatus in which the phase modulated data is equalized by a reproduction equalizer of a phase demodulation circuit in the audio signal system during recording and reproduction, the recording frequency characteristics and the recording frequency characteristics of the phase modulated audio signal are determined according to the recording mode. A recording equalizer that controls recording current characteristics, a recording equalization characteristic selection changeover switch that selects this recording equalizer in accordance with the recording mode, and amplifying the output that passes through this changeover switch to supply current to the audio head. an audio signal recording amplifier, and the recording equalizer has a characteristic that the spectrum of the phase-modulated audio signal recorded and reproduced on the magnetic tape is practically constant in any of the recording modes. A magnetic tape recording and reproducing device characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10848487U JPS6415360U (en) | 1987-07-14 | 1987-07-14 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10848487U JPS6415360U (en) | 1987-07-14 | 1987-07-14 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6415360U true JPS6415360U (en) | 1989-01-26 |
Family
ID=31343858
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10848487U Pending JPS6415360U (en) | 1987-07-14 | 1987-07-14 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6415360U (en) |
-
1987
- 1987-07-14 JP JP10848487U patent/JPS6415360U/ja active Pending
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