US5734932A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Image stabilizing device for camera
Assignee: Canon Inc
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Filing: 1994-10-07
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Granted: 1998-03-31
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Expires: 2014-10-07
Abstract
Abstract A camera image stabilizing apparatus includes a blur detecting device for detecting blur in an image; a blur compensating device for compensating blur in the image; a control device for controlling the blur compensating device, in response to an output from the blur detecting device; and a varying device for changing in accordance with shutter speed, at least one of an integration time constant of the control device, that of a high-pass filter, or the gain of a control loop.
Inventors
- 👤 Koichi Washisu
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 23:10
CPC Classifications
G; G03; G03B; G03B17/00; G03B2207/00; G03B2207/005; G03B2217/00; G03B2217/005
Claims Analysis
Total Claims: 49
Claim 1
Independent Claim
83 words
An image stabilizing apparatus for a camera, comprising: (A) blur detecting means for detecting image blur; (B) blur compensating means for compensating for image blur; (C) control means for controlling said blur compensating means in response to an output from said blur detecting means; and (D) varying means capable of changing in accordance with shutter speed, at least one of an integration time constant of said control means, an integration time constant of a high-pass filter, or the gain of a control loop.
Claim 2
Dependent Claim
83 words
An image stabilizing apparatus for a camera, comprising: (A) blur detecting means for detecting image blur; (B) blur compensating means for compensating for image blur; (C) control means for controlling said blur compensating means in response to an output from said blur detecting means; and (D) varying means capable of changing in accordance with shutter speed, at least one of an integration time constant of said control means, an integration time constant of a high-pass filter, or the gain of a control loop.
Claim 3
Dependent Claim
54 words
An image stabilizing apparatus for a camera according to claim 1, wherein said varying means comprises means for reducing, in accordance with a rise in shutter speed, at least one of the integration time constant of said control means, the integration time constant of a high-pass filter, or the gain of a control loop.
Claim 4
Dependent Claim
54 words
An image stabilizing apparatus for a camera according to claim 1, wherein said varying means comprises means for enlarging, in accordance with a reduction in shutter speed, at least one of the integration time constant of said control means, the integration time constant of a high-pass filter, or the gain of a control loop.
Claim 5
Dependent Claim
26 words
An image stabilizing apparatus for a camera according to claim 1, wherein said varying means comprises means for changing the gain of a speed control loop.
Claim 6
Dependent Claim
26 words
An image stabilizing apparatus for a camera according to claim 1, wherein said varying means comprises means for changing the gain of a position control loop.
Claim 7
Dependent Claim
28 words
An image stabilizing apparatus for a camera according to claim 1, wherein said blur detecting means comprises means for detecting an angular velocity of an imaging optical system.
Claim 8
Dependent Claim
21 words
An image stabilizing apparatus for a camera according to claim 1, wherein said blur compensating means comprises a compensating optical means.
Claim 9
Dependent Claim
76 words
A camera comprising: (A) blur detecting means for detecting image blur; (B) blur compensating means for compensating image blur; (C) control means for controlling said blur compensating means in response to an output from said blur detecting means; and (D) varying means for changing, in accordance with shutter speed, at least one of an integration time constant of said control means, an integration time constant of a high-pass filter, or the gain of a control loop.
Claim 10
Dependent Claim
76 words
A camera comprising: (A) blur detecting means for detecting image blur; (B) blur compensating means for compensating image blur; (C) control means for controlling said blur compensating means in response to an output from said blur detecting means; and (D) varying means for changing, in accordance with shutter speed, at least one of an integration time constant of said control means, an integration time constant of a high-pass filter, or the gain of a control loop.
Claim 11
Dependent Claim
48 words
A camera according to claim 8, wherein said varying means comprises means for reducing, in accordance with rise in shutter speed, at least one of the integration time constant of said control means, the integration time constant of a high-pass filter, or the gain of a control loop.
Claim 12
Dependent Claim
48 words
A camera according to claim 8, wherein said varying means includes means for enlarging, in accordance with reduction in shutter speed, at least one of the integration time constant of said control means, the integration time constant of a high-pass filter, or the gain or a control loop.
Claim 13
Dependent Claim
21 words
A camera according to claim 8, wherein said varying means comprises means for changing the gain of a speed control loop.
Claim 14
Dependent Claim
21 words
A camera according to claim 8, wherein said varying means comprises means for changing the gain of a position control loop.
Claim 15
Dependent Claim
23 words
A camera according to claim 8, wherein said blur detecting means comprises means for detecting an angular velocity of an imaging optical system.
Claim 16
Dependent Claim
16 words
A camera according to claim 8, wherein said blur compensating means comprises a compensating optical means.
Claim 17
Dependent Claim
54 words
An optical apparatus, comprising: (a) vibration detecting means; (b) vibration compensating means; (c) control means for controlling an operation of said vibration compensating means in accordance with an output of said vibration detection means; and (d) varying means for changing a vibration compensation characteristic of said vibration compensating means in accordance with shutter speed.
Claim 18
Dependent Claim
54 words
An optical apparatus, comprising: (a) vibration detecting means; (b) vibration compensating means; (c) control means for controlling an operation of said vibration compensating means in accordance with an output of said vibration detection means; and (d) varying means for changing a vibration compensation characteristic of said vibration compensating means in accordance with shutter speed.
Claim 19
Dependent Claim
25 words
An apparatus according to claim 15, wherein said varying means changes a frequency range in which vibration is compensated for by said vibration compensating means.
Claim 20
Dependent Claim
26 words
An apparatus according to claim 16, wherein said varying means increases a lower limit of said frequency range in accordance with an increase in shutter speed.
Claim 21
Dependent Claim
26 words
An apparatus according to claim 16, wherein said varying means decreases the lower limit of said frequency range in accordance with a decrease in shutter speed.
Claim 22
Dependent Claim
14 words
An apparatus according to claim 15, wherein said optical apparatus performs a photographing function.
Claim 23
Dependent Claim
57 words
An image blur prevention apparatus adapted to a camera including a setting portion for setting a shutter speed, said apparatus comprising: an image blur prevention device that compensates for image blur; and a varying device that varies an operation characteristic of said image blur prevention device in accordance with a shutter speed set by said setting portion.
Claim 24
Dependent Claim
57 words
An image blur prevention apparatus adapted to a camera including a setting portion for setting a shutter speed, said apparatus comprising: an image blur prevention device that compensates for image blur; and a varying device that varies an operation characteristic of said image blur prevention device in accordance with a shutter speed set by said setting portion.
Claim 25
Dependent Claim
23 words
An apparatus according to claim 20, wherein said varying device includes means for varying a frequency characteristic of said image blur prevention device.
Claim 26
Dependent Claim
43 words
An apparatus according to claim 21, wherein said image blur prevention device includes an image blur compensating device that compensates for an image blur, and said varying means changes a frequency range in which vibration is compensated for by said vibration compensating device.
Claim 27
Dependent Claim
26 words
An apparatus according to claim 22, wherein said varying means increases a lower limit of said frequency range in accordance with an increase in shutter speed.
Claim 28
Dependent Claim
26 words
An apparatus according to claim 22, wherein said varying means decreases the lower limit of said frequency range in accordance with a decrease in shutter speed.
Claim 29
Dependent Claim
61 words
An apparatus according to claim 20, wherein said image blur prevention device includes means for performing an image blur prevention operation in accordance with a signal corresponding to a state of image blur and said varying device includes means for varying a response characteristic of said image blur prevention device according to a signal corresponding to the state of image blur.
Claim 30
Dependent Claim
47 words
An apparatus according to claim 25, wherein said image blur prevention device includes means for performing an image blur compensation operation in accordance with a signal corresponding to a fluctuation state of a device for which said image blur prevention device performs the image blur compensation operation.
Claim 31
Dependent Claim
72 words
An apparatus according to claim 20, further comprising: a signal processing circuit that performs a predetermined signal processing in accordance with a signal corresponding to the image blur, wherein said image blur prevention device includes means for performing the image blur prevention operation in accordance with a signal derived from said predetermined signal processing circuit, and said varying device includes means for varying a signal processing characteristic of said signal processing circuit.
Claim 32
Dependent Claim
30 words
An apparatus according to claim 27, wherein said signal processing circuit includes a high-pass filter, and said varying means includes means for varying a time constant of said high-pass filter.
Claim 33
Dependent Claim
49 words
An apparatus according to claim 20, further comprising: a control circuit that controls said image blur prevention device in accordance with the signal corresponding to the image blur, and wherein said varying device includes means for varying a control loop gain of a control loop of said control circuit.
Claim 34
Dependent Claim
20 words
An apparatus according to claim 20, wherein said image blur prevention device includes means for optically compensating for image blur.
Claim 35
Dependent Claim
19 words
An apparatus according to claim 30, wherein said image blur prevention device includes means for deflecting a light beam.
Claim 36
Dependent Claim
31 words
An apparatus according to claim 20, wherein said image blur prevention device includes means for performing an image blur prevention operation by moving a compensating optical member in an optical path.
Claim 37
Dependent Claim
25 words
An apparatus according to claim 20, wherein said image blur prevention device includes means for preventing image blur for a photographic image of the camera.
Claim 38
Dependent Claim
26 words
An apparatus according to claim 22, wherein said varying device includes means for reducing said frequency range in accordance with an increase in the shutter speed.
Claim 39
Dependent Claim
26 words
An apparatus according to claim 28, wherein said varying device includes means for decreasing said time constant in accordance with an increase in the shutter speed.
Claim 40
Dependent Claim
37 words
An apparatus according to claim 27, wherein said signal processing circuit includes an integrating circuit and said varying device includes means for varying an integration time constant of said integrating circuit in accordance with the shutter speed.
Claim 41
Dependent Claim
27 words
An apparatus according to claim 36, wherein said varying device includes means for decreasing the integration time constant in accordance with an increase in the shutter speed.
Claim 42
Dependent Claim
35 words
An apparatus according to claim 20, wherein the camera includes a photometric device, and said setting portion includes means for determining the shutter speed in accordance with a result of photometry by said photometric device.
Claim 43
Dependent Claim
22 words
An apparatus according to claim 20, wherein said setting portion includes means for enabling a user to arbitrarily set the shutter speed.
Claim 44
Independent Claim
69 words
An apparatus for use with an image blur prevention device adapted to a camera including a setting portion for setting a shutter speed, said apparatus comprising: an input portion that inputs shutter speed information indicated by said setting portion of the camera, and a varying device that varies an operation characteristic of said image blur prevention device in accordance with the shutter speed information input to said input portion.
Claim 45
Independent Claim
69 words
An apparatus for use with an image blur prevention device adapted to a camera including a setting portion for setting a shutter speed, said apparatus comprising: an input portion that inputs shutter speed information indicated by said setting portion of the camera, and a varying device that varies an operation characteristic of said image blur prevention device in accordance with the shutter speed information input to said input portion.
Claim 46
Dependent Claim
57 words
An optical apparatus adapted for use with a camera including a setting portion for setting a shutter speed, said apparatus comprising: an image blur prevention device that compensates for image blur; and a varying device that varies an operation characteristic of said image blur prevention device in accordance with a shutter speed set by said setting portion.
Claim 47
Dependent Claim
57 words
An optical apparatus adapted for use with a camera including a setting portion for setting a shutter speed, said apparatus comprising: an image blur prevention device that compensates for image blur; and a varying device that varies an operation characteristic of said image blur prevention device in accordance with a shutter speed set by said setting portion.
Claim 48
Dependent Claim
67 words
A camera including a setting portion for setting a shutter speed, said camera comprising: an image blur prevention device that compensates for image blur; an input portion that inputs shutter speed information indicated by said setting portion of said camera; and a varying device that varies an operation characteristic of said image blur prevention device in accordance with the shutter speed information input to said input portion.
Claim 49
Dependent Claim
67 words
A camera including a setting portion for setting a shutter speed, said camera comprising: an image blur prevention device that compensates for image blur; an input portion that inputs shutter speed information indicated by said setting portion of said camera; and a varying device that varies an operation characteristic of said image blur prevention device in accordance with the shutter speed information input to said input portion.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2001-03-30 | 2001-09-29 | 2002-03-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-03-30 | 2005-09-29 | 2006-03-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-03-30 | 2009-09-29 | 2010-03-31 | $7700.00 | Window Closed / Lapsed |