JPS58127762U

JPS58127762U - Tape travel control system for magnetic recording and reproducing equipment

Info

Publication number: JPS58127762U
Application number: JP2286282U
Authority: JP
Inventors: 英男西島; 福島　勇夫; 康功小堀; 周幸岡本
Original assignee: 株式会社日立製作所
Priority date: 1982-02-22
Filing date: 1982-02-22
Publication date: 1983-08-30

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of the drawing]

第１図は従来の磁気テープ上の磁気トラックとビデオヘ
ッドの走査位置関係を示す平面図、第２図は回転ドラム
装置の側面図、第３図は本考案による磁気トラックとビ
デオ・＼ラドの走査位置関係を示す平面図、第４図は磁
気トラックの平面図、第５図は特性図、第６図は本考案
による一実施例を示すブロック図である。２・・・磁気トラック、４・・・回転ドラム、７・８・
９・・・ヘッドトレース軌跡、１０・・・水平同期信号
、１３・・・特性曲線、２３・２４・・・ガイドピン、
２７・・・モータ、３５・３６・・・同期検波器、３７
・・・比較判定回路。Fig. 1 is a plan view showing the scanning positional relationship between a magnetic track on a conventional magnetic tape and a video head, Fig. 2 is a side view of a rotating drum device, and Fig. 3 is a plan view of a magnetic track and a video head according to the present invention. FIG. 4 is a plan view showing the scanning positional relationship, FIG. 4 is a plan view of the magnetic track, FIG. 5 is a characteristic diagram, and FIG. 6 is a block diagram showing an embodiment of the present invention. 2...Magnetic track, 4...Rotating drum, 7.8.
9... Head trace locus, 10... Horizontal synchronization signal, 13... Characteristic curve, 23, 24... Guide pin,
27... Motor, 35/36... Synchronous detector, 37
... Comparison/judgment circuit.

Claims

[Scope of utility model registration request]

a rotating drum having two video heads; a magnetic tape wound around the rotating drum at a constant angle of inclination;
a running means for running the magnetic tape, the video signal is recorded on the magnetic tape by forming one diagonal magnetic track for each field by the video head, and when playing back the video signal is different from when recording. In an apparatus for obtaining a variable speed reproduction image by running the tape at a tape speed, the winding angle of the magnetic tape around the rotating drum is controlled so that the frequency of the horizontal synchronizing signal in the reproduced video signal is always maximized. A tape running control system for a magnetic recording/reproducing device.