Electromagnetic circuit and servo mechanism for articulated cameras
First Claim
Patent Images
1. A servo mechanism, comprising:
- a coil assembly, said coil assembly comprising at least one motor coil integrated with a printed circuit board; and
a magnet assembly, said magnet assembly comprising a one-piece continuous rare earth magnet having at least two sets of poles and being configured in a full ring shape;
wherein said coil assembly and said magnet assembly are rotatably coupled together in operative relationship;
wherein said coil assembly further comprises a coil support platter rotatably coupled to said magnet assembly, said at least one coil being fixedly coupled to said coil support platter;
wherein said coil support platter comprises a first printed circuit board having first circuitry;
wherein said magnet assembly further comprises a second printed circuit board having second circuitry, said second printed circuit board being fixedly coupled to said magnet;
wherein said servo mechanism further comprises a dynamic signal interface between said first circuitry of said first printed circuit board and said second circuitry of said second printed circuit board;
wherein said first printed circuit board and said second printed circuit board define a slip ring boundary therebetween; and
wherein said first and second circuitry comprise position feedback circuitry.
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Accused Products
Abstract
An electromagnetic circuit that may be advantageously employed in an articulated camera, such as a CCTV camera, as a part of a servo mechanism to directly drive the camera and optical lens assembly, for example, in the pan and/or tilt axes. In one embodiment, the coil assembly of the servo mechanism may comprise four separate coils that rotate about the center of the ring shape of a single one-piece ring-shaped permanent magnet that has been pre-magnetized in two pair of opposing polarities. The magnet assembly that includes the magnet ring, may be bonded to a circular plate made of ferrous metal.
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Citations
63 Claims
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1. A servo mechanism, comprising:
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a coil assembly, said coil assembly comprising at least one motor coil integrated with a printed circuit board; and a magnet assembly, said magnet assembly comprising a one-piece continuous rare earth magnet having at least two sets of poles and being configured in a full ring shape; wherein said coil assembly and said magnet assembly are rotatably coupled together in operative relationship; wherein said coil assembly further comprises a coil support platter rotatably coupled to said magnet assembly, said at least one coil being fixedly coupled to said coil support platter; wherein said coil support platter comprises a first printed circuit board having first circuitry; wherein said magnet assembly further comprises a second printed circuit board having second circuitry, said second printed circuit board being fixedly coupled to said magnet; wherein said servo mechanism further comprises a dynamic signal interface between said first circuitry of said first printed circuit board and said second circuitry of said second printed circuit board; wherein said first printed circuit board and said second printed circuit board define a slip ring boundary therebetween; and wherein said first and second circuitry comprise position feedback circuitry. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A servo mechanism, comprising:
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a coil assembly, said coil assembly comprising at least one motor coil having coil conductor terminals, said at least one motor coil being integrated with a printed circuit board and first circuitry; and a magnet assembly, said magnet assembly comprising second circuitry and a one-piece continuous rare earth magnet having at least two sets of poles and being configured in a full ring shape; wherein said coil assembly and said magnet assembly are rotatably coupled together so that at least one of said coil assembly and said magnet assembly rotates in response to application of voltage across said coil conductor terminals of said at least one coil; and wherein said first and second circuitry comprise position feedback circuitry. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23)
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24. A rotary drive optical block assembly, comprising:
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a coil assembly, said coil assembly comprising; at least one motor coil having coil conductor terminals, and a coil support platter comprising a first printed circuit board having first circuitry and first dynamic interface components, said at least one coil being fixedly coupled to said coil support platter; a magnet assembly rotatably coupled to said coil assembly so that one of said coil assembly or said magnet assembly is a moving assembly that rotates in response to application of voltage across said coil conductor terminals of said at least one coil, and the other of said coil assembly or said magnet assembly is a stationary assembly, said magnet assembly comprising; a continuous magnet having at least two sets of poles, and a second printed circuit board fixedly coupled to said magnet, said second printed circuit board having second circuitry and second dynamic interface components electrically coupled to said first dynamic interface components; and an optical block coupled to said moving assembly, so that said moving assembly directly drives and imparts rotation to said optical block relative to said stationary assembly when said moving assembly rotates relative to said stationary assembly; wherein said first dynamic interface components of said first printed circuit board and said second dynamic interface components of said second printed circuit board together form a dynamic signal interface between said first circuitry of said first printed circuit board and said second circuitry of said second printed circuit board; and wherein said first and second circuitry comprise position feedback circuitry. - View Dependent Claims (25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36)
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37. A method of operating a servo mechanism, comprising:
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providing a servo mechanism, comprising; a coil assembly, said coil assembly comprising at least one motor coil having coil conductor terminals, said at least one motor coil being integrated with a printed circuit board and first circuitry, and a magnet assembly, said magnet assembly comprising second circuitry and a one-piece continuous rare earth magnet having at least two sets of poles and being configured in a full ring shape, wherein said coil assembly and said magnet assembly are rotatably coupled together in operative relationship, wherein said first and second circuitry comprise position feedback circuitry; and imparting rotation to at least one of said coil assembly or said magnet assembly by applying voltage across said coil conductor terminals of said at least one coil. - View Dependent Claims (38, 39, 40, 41, 42, 43, 44, 45, 46, 47)
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48. A method of rotating an optical block assembly, comprising:
providing a servo mechanism, said servo mechanism comprising; a coil assembly including at least one motor coil having coil conductor terminals, and a coil support platter comprising a first printed circuit board having first circuitry and first dynamic interface components, said at least one coil being fixedly coupled to said coil support platter, a magnet assembly rotatably coupled to said coil assembly so that one of said coil assembly or said magnet assembly is a moving assembly that rotates in response to application of voltage across said coil conductor terminals of said at least one coil and the other of said coil assembly or said magnet assembly is a stationary assembly, said magnet assembly comprising a continuous magnet having at least two sets of poles, and a second printed circuit board fixedly coupled to said magnet, said second printed circuit board having second circuitry and second dynamic interface components electrically coupled to said first dynamic interface components, wherein said first dynamic interface components of said first printed circuit board and said second dynamic interface components of said second printed circuit board together form a dynamic signal interface between said first circuitry of said first printed circuit board and said second circuitry of said second printed circuit board, wherein said first and second circuitry comprise position feedback circuitry; providing an optical block coupled to said moving assembly of said servo mechanism so that said optical block rotates with said moving assembly of said servo mechanism relative to said stationary assembly of said servo mechanism, said moving assembly of said servo mechanism being coupled to said optical block so as to directly drive and impart rotation to said optical block; imparting rotation to said optical block by applying voltage across said coil conductor terminals of said at least one coil of said coil assembly; and transmitting at least one signal from said first circuitry to said second circuitry across said dynamic signal interface. - View Dependent Claims (49, 50, 51, 52, 53, 54, 55, 56, 57, 58)
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59. A coil assembly for a servo mechanism, comprising:
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at least one motor coil having coil conductor terminals; and a coil support platter comprising a first printed circuit board having first circuitry and first dynamic interface components, said at least one coil being fixedly coupled to said coil support platter; wherein said coil assembly is configured to be rotatably coupled to a magnet assembly comprising a second printed circuit board, said second printed circuit board having second circuitry and second dynamic interface components; wherein said first dynamic interface components of said first printed circuit board are configured to form a dynamic interface together with said second dynamic signal interface components of said second printed circuit board so that said dynamic signal interface electrically couples said first circuitry of said first printed circuit board to said second circuitry of said second printed circuit board; and wherein said first and second circuitry comprise position feedback circuitry.
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60. A servo mechanism, comprising:
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a coil assembly, said coil assembly comprising at least one motor coil integrated with a printed circuit board and first circuitry; and a magnet assembly, said magnet assembly comprising second circuitry and a one-piece continuous magnet having at least two sets of poles and being configured in a full ring shape; wherein said coil assembly and said magnet assembly are rotatably coupled together in operative relationship; and wherein said first and second circuitry comprise position feedback circuitry. - View Dependent Claims (61, 62, 63)
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Specification