Surveillance camera system

• US 4,918,473 A
• Filed: 03/02/1988
• Issued: 04/17/1990
• Est. Priority Date: 03/02/1988
• Status: Expired due to Term

• Current Assignee: Honeywell International Inc.
• Original Assignee: Diamond Electronics Incorporated
• Inventors: Blackshear, David M.
• Primary Examiner(s): Gellner, Michael L.
• Application Number:
  US07/163,257
• Time in Patent Office: 776 Days
• Field of Search: 354/81, 358/108
• US Class Current: 396/427
• CPC Class Codes: G08B 13/19619 Details of casing
• CPC Class Codes: G08B 13/1963 Arrangements allowing camera rotation to change view, e.g. pivoting camera, pan-tilt and zoom [PTZ]
• CPC Class Codes: G08B 13/19632 Camera support structures, e.g. attachment means, poles

Abstract

A surveillance camera system comprises a spherical housing that has a lower, hemispherically shaped, gold coated dome 12 with a geometric center. A camera mount is mounted in the housing for panning movements about a pan axis that extends through the dome center and for tilting movements about a tilt axis that transverses the pan axis through the dome center. Electric motors 24/27 are mounted in the housing for panning and tilting the camera mount. A video CCD type camera 30 is mounted upon the camera mount with its center of gravity located adjacent the pan and tilt axes. A rotary electric coupler 39 is mounted to the housing and electric connectors provided for connecting the camera and the motors with an ancillary video display and camera orientation controller through the rotary coupler.

Claims

1. A surveillance camera system comprising a housing that includes an at least partially transparent, generally hemispherically shaped dome having a geometric center;

a camera mount mounted within said housing for panning movements about a pan axis that extends through or closely adjacent to said dome center and for tilting movements about a tilt axis that transverses said pan axis through or closely adjacent to said dome center;

electric motor means mounted within said housing for panning and tilting said camera mount;

a camera mounted upon said camera mount with its center of gravity located adjacent said pan and tilt axes;

rotary electric coupling means mounted to said housing; and

electric connector means for connecting said camera and said motor means with an ancillary video display and camera orientation control means through said rotary coupling means, said rotary electric coupling means being adapted to transmit electrical signals during continuous unidirectional panning movement of said camera mount.

2. The surveillance camera system of claim 1 wherein said housing comprises a second generally hemispherically shaped dome mounted to said at least partially transparent, generally hemispherically shaped dome to form in combination therewith a generally spherically shaped housing.

3. The surveillance camera system of claim 2 wherein said dome is releasibly mounted to said second dome.

4. The surveillance camera system of claim 2 wherein said second dome is opaque.

5. The surveillance camera system of claim 1 wherein said dome is semi-transparent.

6. The surveillance camera system of claim 5 wherein said dome has a transparent substrate coated with gold.

7. The surveillance camera system of claim 1 wherein said camera mount comprises an inverted U-shaped fork to which a platform is tiltably mounted, and wherein said camera is mounted to said platform.

8. The surveillance camera system of claim 7 wherein said motor means comprises a sun gear rigidly mounted to said housing coaxially with respect to said rotary coupling means, an electric motor mounted to said fork, and a planetary gear mounted to the drive shaft of said electric motor in mesh with said sun gear.

9. The surveillance camera of claim 8 wherein said motor means further comprises a second sun qear rigidly mounted to said platform, a second electric motor mounted to said fork, and a second planetary qear mounted to the drive shaft of said second electric motor in mesh with said second sun gears.

10. The surveillance camera system of claim 1 wherein said camera is a video CCD type camera.

11. A surveillance camera system comprising a generally spherical housing at least a portion of which is at least partially transparent;

means for mounting a video camera centrally within said spherical housing for continuous unidirectional panning movements about a panning axis that extends approximately through the center of said spherical housing and for tilting movements about a tilt axis that transverses said pan axes;

rotary electric coupling means mounted to said housing;

a video camera mounted to said camera mounting means;

pan drive means including a pan electric motor for panning said camera mounting means, tilt drive means including a tilt electric motor for tilting said camera mounting means; and

means for electrically connecting said video camera, said pan electric motor and said tilt electric motor through said rotary electric coupling means to ancillary electrical apparatuses.

12. The surveillance camera system of claim 11 wherein said housing has two generally hemispherically spaced domes releasibly mounted to each other.

13. The surveillance camera system of claim 12 wherein one of said domes is opaque and the other of said domes is partially transparent.

14. The surveillance camera system of claim 13 wherein said other dome is comprised of gold coated plastic.

15. The surveillance camera system of claim 11 wherein said camera mounting means comprises a bracket rotatably suspended from a mounting plate and a platform pivotably mounted to said bracket.

16. The surveillance camera system of claim 15 wherein said pan drive means comprises a sun gear rigidly mounted to said mounting plate between said plate and said bracket, an electric motor mounted to said bracket, and a planetary gear mounted to the drive shaft of said electric motor in mesh with said sun gear.

17. The surveillance camera system of claim 15 wherein said tilt means comprises a sun gear rigidly mounted to said bracket, an electric motor mounted to said bracket, and a pleanetary gear mounted to the drive shaft of said electric motor in mesh with said sun gear.