Title:
MAGNETIC RECORDING AND REPRODUCING SYSTEM
Document Type and Number:
Japanese Patent JPS6035371
Kind Code:
A
Abstract:
PURPOSE:To improve considerably learning effect by recording a digital video signal and an analog sound signal on a magnetic recording medium in time series and reproducing the digital video signal first and then reproducing a sound, music, etc., according to the variation of a picture plane upon the video signal. CONSTITUTION:A control signal such as a sine-wave signal of 50Hz which is hardly heard by listeners is inserted in sound and music signal at several positions only for a short time, and used as a sign when a processor 13 operates a picture plane; when the operation of the picture plane A is all completed, the processor stops operating and holds itself until the control signal inserted into the sound and music signal is reproduced before entering the next operation of a picture plane B. The processor 13 once detecting the control signal starts operating the picture plane B, and a sound reproducing circuit 12 starts reproducing a sound (b) relative to the picture plane B which is recorded right after the control signal. The video signal is reproduced at a double speed to store all image data in a video memory 14, and then the processor 13 outputs immediately a control signal for reducing the head running speed to half to a head driving control circuit 20.
Inventors:
ITSUSHIKI SADAICHI
HAYASHI HIDEAKI
HAYASHI HIDEAKI
Application Number:
JP14258283A
Publication Date:
February 23, 1985
Filing Date:
August 05, 1983
Export Citation:
Assignee:
TOKYO JIKI INSATSU KK
International Classes:
H04N5/93; G09B5/06; G11B20/00; (IPC1-7): G11B20/00; H04N5/93
Attorney, Agent or Firm:
Motohiro Kurauchi
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