Title:
VIDEO CAMERA
Document Type and Number:
Japanese Patent JPS6373777
Kind Code:
A
Abstract:
PURPOSE:To realize a sound recording with a natural impression according to the distance of a sound source and the state of a zooming by adjusting the sound volume of a microphone by the respective position encoder output signals of a focussing lens and a zoom lens. CONSTITUTION:The information of the focal distance fo the photographing zoom lens 1 is converted into a digital value of 2 bits and outputted by a zoom position encoder 2. A focussing lens position encoder 3 converts information corresponding to a position to an object into the digital value of 2 bits and outputs. A variable amplifier 6 is controlled according to the distance to the object by the output signal of the focussing lens position encoder 3 to increase and decrease the sound volume of the microphone 4 in two stages. According to the wide picture, the standard or the telephotographic signals of the output signal of the zoom position encoder 2, the gain of the variable amplifier 6 is adjusted and the sound volume is varied in three stages.
Inventors:
HAGIWARA KIYOKAZU
KUGA RYUICHIRO
KUGA RYUICHIRO
Application Number:
JP21740386A
Publication Date:
April 04, 1988
Filing Date:
September 16, 1986
Export Citation:
Assignee:
MATSUSHITA ELECTRIC IND CO LTD
International Classes:
G03B31/00; H04N5/225; H04R3/00; (IPC1-7): G03B31/00; H04N5/225; H04R3/00
Attorney, Agent or Firm:
Akira Kobiji (2 outside)