Title:
CAMERA SYSTEM
Document Type and Number:
Japanese Patent JPH01255382
Kind Code:
A
Abstract:
PURPOSE:To execute the coincidence of the phase of a video signal to be transmitted and a former synchronizing signal by re-transmitting the transmitted synchronizing signal to a master device and controlling a phase control circuit so as to cause it to coincide with the phase of the former synchronizing signal. CONSTITUTION:A horizontal synchronizing signal HD is generated from a synchronizing signal generating circuit 18 of a camera head unit 2, the signal is supplied to a delaying circuit 22, and the delayed horizontal synchronizing signal HD is generated. The delayed signal and a pulse signal HD' from a correcting circuit 19 are supplied to a phase comparing circuit 20, the compared output is supplied to a variable oscillator 21, and the phase of the generating circuit 18 is controlled so that the phases (rising phases) of two signals can coincide. Thus, for the video signal generated based on synchronizing signals VD and HD from the generating circuit 18, the phase of the signal transmitted in a transmission line 3 is made to coincide with the phase of the synchronizing signal from a generating circuit 12, and the satisfactory processing of the video signal can be easily executed.
Inventors:
KASAHARA YUJI
KOBAYASHI AKIYA
KOBAYASHI AKIYA
Application Number:
JP8276888A
Publication Date:
October 12, 1989
Filing Date:
April 04, 1988
Export Citation:
Assignee:
SONY CORP
International Classes:
H04N5/073; (IPC1-7): H04N5/073
Domestic Patent References:
| JPS617163B2 | 1986-03-04 | |||
| JPS6218871A | 1987-01-27 | |||
| JPS4990430A | 1974-08-29 | |||
| JPS61177871A | 1986-08-09 | |||
| JPS5497325A | 1979-08-01 | |||
| JPH01213075A | 1989-08-25 | |||
| JPS63238775A | 1988-10-04 |
Attorney, Agent or Firm:
Sada Ito (1 person outside)