Remote control photographic apparatus

• US 3,961,342 A
• Filed: 10/10/1974
• Issued: 06/01/1976
• Est. Priority Date: 10/12/1973
• Status: Expired due to Term

• Current Assignee: Nikon Corporation
• Original Assignee: Nippon Kotsu Kabushiki Kaisha (Nikon Corporation)
• Inventors: Maida, Osamu
• Primary Examiner(s): Hix, L. T.
• Assistant Examiner(s): Adams, Jr, Russel E.
• Application Number:
  US05/513,868
• Time in Patent Office: 600 Days
• Field of Search: 354/50, 354/51, 354/60 R, 354/131, 354/238, 343/225
• US Class Current: 396/59
• CPC Class Codes: G03B 17/38 Releasing-devices separate from shutter integral with shutter G03B9/08
• CPC Class Codes: G03B 17/425 motor drive cameras
• CPC Class Codes: G03B 19/18 Motion-picture cameras with non-intermittently running film G03B41/02

Abstract

Remote control apparatus for cameras having an automatic exposure control circuit and a mechanaism for operating the shutter and advancing the film in the camera comprises a first circuit responsive to a remotely generated photography signal for generating a first control signal to actuate the automatic exposure circuit and a delay circuit for generating a second control signal delayed relative to the first control signal to actuate the shutter-operating and film-advancing mechanism.

Claims

1. Remote control apparatus for use with a camera having an exposure control system for automatically controlling film exposure, a mechanism for operating a camera shutter and advancing film, first switch means operable for actuating said system, second switch means operable for actuating said mechanism, a manually moveable button, and means coupling the button to both of said switch means for sequentially operating the first switch means and then the second switch means in response to manual movement of the button, said apparatus comprising:

third switch means operable for actuating said system;

fourth switch means operable for actuating said mechanism;

receiver means for producing an output signal in response to a remotely generated photography signal; and

means responsive to said output signal for sequentially operating said third switch means and then said fourth switch means, whereby said exposure control system is actuated before said mechanism for operating the shutter and advancing the film.

2. Remote control apparatus according to claim 1 wherein said signal responsive means includes:

a delay circuit responsive to said output signal for producing a time-variable signal that reaches a threshold level subsequent to the start of the output signal; and

a threshold circuit for causing said fourth switch means to operate when the time-variable signal reaches the threshold level.

3. Remote control apparatus according to claim 1, wherein said third switch means and said fourth switch means are connected in parallel with said first switch means and said second switch means, respectively.

4. Remote control apparatus according to claim 1, wherein said camera includes a power supply connected to said system and said mechanism in response to operation of said first switch means and said second switch means, respectively.

5. Remote control apparatus according to claim 1, wherein each of said third switch means and said fourth switch means comprises a semiconductor switch.

6. Remote control apparatus according to claim 5, wherein said remote control apparatus includes power supply means for controlling the operation of said semiconductor switches.

7. Remote control apparatus according to claim 1, wherein said fourth switch means comprises a semiconductor switch and wherein said camera includes power supply means for energizing said semiconductor switch.