Title:
SAUNDOSHINEKAMERA NIOKERU FUIRUMUKYUSOSOKUDONO SEIGYOSOCHI
Document Type and Number:
Japanese Patent JPS5158951
Kind Code:
A
Abstract:
A sound-cinecamera comprising a motor for driving a capstan at uniform velocity, a motor for feeding a film intermittently, a detecting switch for detecting any superfluity or insufficiency of the film feed by said film-feeding motor relative to the film feed by said capstan driving motor and generating corresponding sag-signals, a speed-controlling circuit connected to said film-feeding motor and comprising a tachometer generator for maintaining the stability of the speed of said motor, and a sag-detecting circuit comprising said detecting switch, said sag-detecting circuit being connected to the power source of said film-feeding motor and the output thereof is connected to the controlling means of said speed-controlling circuit through a delay circuit, whereby said sag-signals generated by said detecting switch are transmitted to said controlling means independently of said speed-controlling circuit for regularizing fluctuations in the number of revolution of said film-feeding motor arising from fluctuations in voltage of said power source of the film-feeding motor and fluctuations in load of the film.
Inventors:
ITO ISAMI
Application Number:
JP13380374A
Publication Date:
May 22, 1976
Filing Date:
November 20, 1974
Export Citation:
Assignee:
CHINON IND INC
International Classes:
G03B31/00; G03B31/02; G11B15/46; (IPC1-7): G03B31/00; G11B15/00
Domestic Patent References:
| JPS502536A | 1975-01-11 |