JPS6329202U

JPS6329202U -

Info

Publication number: JPS6329202U
Application number: JP12049686U
Authority: JP
Priority date: 1986-08-05
Filing date: 1986-08-05
Publication date: 1988-02-26

Description

[Brief explanation of the drawing]

第１図は本考案による磁気テープ記録／再生装
置の構成を示すブロツク図、第２図はＤＡＴの記
録／再生周波数特性の一例を示す図、第３図は８
mmＶＴＲの記録／再生信号の周波数分布を示す図
、第４図はＤＡＴの信号処理（時間軸の伸縮）を
説明するための図、第５図はＤＡＴのテープ巻付
け角を説明するためのドラム上面図、第６図は緑
画に必要な巻付け角を説明するためのドラム上面
図、第７図はデイジタル録音と録画のテープパタ
ーン、第８図はテレビ信号とヘツドの信号を分担
を説明するための波形図、第９図はテープ走行面
とドラムヘツド回転面の関係を説明するための図
、第１０図はドラムの傾きとテープ巻付け角を説
明するための図、第１１図はテープ走行面の回転
を説明するための図、第１２図および第１３図は
ドラムの傾斜方法を示す図、第１４図は１８００
ｒｐｍ駆動発振器の構成を示すブロツク図、第１
５図はＤＡＴの録音および録画におけるテープ巻
付け角を示す詳細説明図である。１……オーデイオ入力、２……映像入力、３…
…音声信号処理（デイジタル化）装置、４，１５
，２６，３１……Ａ―Ｖ切換えスイツチ、５……
Ｙ／Ｃ分離回路、６……ＦＭ変調器、７……低搬
送波変換器、８……加算回路、９……記録増幅器
、１０……記録ヘツド、１１……テープ、１２…
…再生ヘツド、１３……前置増幅器、１４……等
化器、１６……デイジタル信号複号処理装置、１
７……音声出力信号、１８……Ｙ／Ｃ分離フイル
タ、１９……ＦＭ復調器、２０……周波数変換器
、２１……加算回路、２２……映像出力信号、２
３……２０００ｒｐｍ駆動発振器、２４……１８
００ｒｐｍ駆動発振器、２５……垂直同期信号、
２７……サーボ増幅器、２８……ドラム回転モー
タ、２９……デイジタル・オーデイオ駆動機構位
置、３０……映像駆動機構位置、３２……４ｆｓ
ｃ発振器、３３……１／４５５周波数逓降回路、
３４……１／５２５周波数逓降回路。 FIG. 1 is a block diagram showing the configuration of a magnetic tape recording/reproducing apparatus according to the present invention, FIG. 2 is a diagram showing an example of the recording/reproducing frequency characteristics of DAT, and FIG.
Figure 4 is a diagram showing the frequency distribution of recording/playback signals of mmVTR, Figure 4 is a diagram explaining DAT signal processing (time axis expansion/contraction), Figure 5 is a diagram showing the drum winding angle of DAT. Top view, Figure 6 is a top view of the drum to explain the winding angle required for the green screen, Figure 7 is the tape pattern for digital recording and video recording, and Figure 8 is to explain the division of TV signals and head signals. 9 is a diagram to explain the relationship between the tape running surface and the drum head rotating surface, FIG. 10 is a diagram to explain the drum inclination and tape winding angle, and FIG. 11 is a diagram to explain the relationship between the tape running surface and the drum head rotating surface. Diagrams for explaining the rotation of the running surface, Figures 12 and 13 are diagrams showing the method of tilting the drum, and Figure 14 is for 1800 mm.
Block diagram showing the configuration of the rpm drive oscillator, 1st
FIG. 5 is a detailed explanatory diagram showing tape winding angles in DAT recording and video recording. 1...Audio input, 2...Video input, 3...
...Audio signal processing (digitization) device, 4,15
, 26, 31...AV changeover switch, 5...
Y/C separation circuit, 6...FM modulator, 7...Low carrier wave converter, 8...Addition circuit, 9...Recording amplifier, 10...Recording head, 11...Tape, 12...
...Reproduction head, 13...Preamplifier, 14...Equalizer, 16...Digital signal decoding processing device, 1
7... Audio output signal, 18... Y/C separation filter, 19... FM demodulator, 20... Frequency converter, 21... Addition circuit, 22... Video output signal, 2
3...2000 rpm drive oscillator, 24...18
00 rpm drive oscillator, 25...vertical synchronization signal,
27...Servo amplifier, 28...Drum rotation motor, 29...Digital audio drive mechanism position, 30...Video drive mechanism position, 32...4fs
c oscillator, 33...1/455 frequency down-down circuit,
34...1/525 frequency down-down circuit.

Claims

[Claims for Utility Model Registration] (a) A mechanism capable of varying the inclination of the rotary head with respect to a horizontal plane into a first inclination and a second inclination; (b) a mechanism capable of changing the rotation speed of the rotary head to a first rotation speed; (c) a mechanism that can vary the winding angle of the tape around the drum to a first angle and a second angle; and (d) a mechanism that drives the above three mechanisms simultaneously. 1. A magnetic tape recording/reproducing device comprising: means.