| 摘要 |
<p>PURPOSE:To sharply improve the isolation between the channels of a rotary transformer connected with two video heads which are used for ordinary reproduction, by putting the channel of the rotary transformer, to which a video head used for special reproduction is connected, between the two channels, to which the two video heads used for ordinary reproduction are connected. CONSTITUTION:At the time of recording, a video signal is inputted into an input terminal 9a and a sound signal which is, for example, compressed in time base and pulse-code-modulated is inputted into another input terminal 9b. Switches 10a and 10b are connected in the direction shown in the diagram when video heads 15a and 15b are positioned to record sound signals and, when the heads 15a and 15b are positioned to record video signals, in the opposite direction. When all change-over switches 13 are connected in the opposite direction of the direction shown in the diagram at the time of reproduction, the reproduced output of the video heads is given to regenerative amplifiers 17 through a rotary transformer 14. At the time of ordinary reproduction, a switch 18 is connected in the direction shown in the diagram and the output of the regenerative amplifiers 17a and 17c is transmitted to a switch 19.</p> |
