recording device

Abstract

Abstract PURPOSE:To secure a track for postrecording at the time of recording of a video by setting the track for the sound recording postrecording at the time of recording by recording a prescribed signal on the track. CONSTITUTION:A start flag and an end flag in which a sector type corresponds to a type 4 are generated synchronously with the rotation of a floppy for the period of one track and four sectors in a flag generating circuit 12 according to the sound recording format of a still video floppy specification. The combination of the start flag and the end flag corresponding to this type 4 indicates that a voice signal is not recorded on the sector to which the flag is attached. This signal is recorded on the floppy by the head 6 and at this time, a signal is not outputted from a DPSK (Differential Phase Shift Keying) circuit 7 to an addition circuit 4. Further, when the track which can be recorded is left next, the head 6 is moved to the next track and a switch 11 is changed over to an output side of 2 by a CPU 9. Thereby, at the time of photographing, the sound recording track can be secured.

Inventors

• 👤 Yoichi Yamagishi
• 👤 洋一 山岸
• 👤 Hiroyuki Horii
• 👤 博之 堀井

Bibliographic Details