US5666158A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Image pick-up apparatus having vibration correcting circuitry
Assignee: Canon Inc
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Filing: 1995-06-05
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Granted: 1997-09-09
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Expires: 2015-06-05
Abstract
Abstract An image pick-up apparatus includes a detection circuit for detecting vibration of the apparatus body, a correction system for correcting the vibration by shifting an image, and a control circuit for controlling driving of the correction system in accordance with an output of the detection circuit. A closed loop frequency characteristic is constituted as a notch filter, and a blocking frequency of the notch filter is made variable on the basis of changes in the detected vibration frequency.
Inventors
- 👤 Masayoshi Sekine
- 👤 Jun Tokumitsu
- 👤 Toshiaki Kondo
- 👤 Koji Takahashi
- 👤 Isao Harigaya
- 👤 Naoki Kawamata
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 13:32
CPC Classifications
G; G01; G01S; G01S3/00; G01S3/78; G01S3/782; G01S3/785; G01S3/786; G01S3/7864; H; H04; H04N; H04N23/00; H04N23/60; H04N23/68; H04N23/681; H04N23/6811; H04N23/682; H04N23/685; H04N23/686
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
103 words
An image sensing apparatus comprising: (A) detection means for detecting movement of an image; (B) correction means for correcting the movement of the image; and (C) control means having a filter having a predetermined filter characteristic, for controlling said correction means by generating a control signal in response to detection of movement by said detection means and according to said predetermined filter characteristic, said predetermined filter characteristic being predetermined according to (i) a relationship between frequencies filtered by said filter and (ii) a transfer function determined by a closed feedback loop formed by said detection means, said correction means, and said control means.
Claim 2
Dependent Claim
103 words
An image sensing apparatus comprising: (A) detection means for detecting movement of an image; (B) correction means for correcting the movement of the image; and (C) control means having a filter having a predetermined filter characteristic, for controlling said correction means by generating a control signal in response to detection of movement by said detection means and according to said predetermined filter characteristic, said predetermined filter characteristic being predetermined according to (i) a relationship between frequencies filtered by said filter and (ii) a transfer function determined by a closed feedback loop formed by said detection means, said correction means, and said control means.
Claim 3
Dependent Claim
34 words
An image pick-up apparatus according to claim 1, wherein said control means has a band-pass filter in a control loop for controlling said correction means in accordance with the output of said detection means.
Claim 4
Dependent Claim
20 words
An image pick-up apparatus according to claim 2, wherein said correction means comprises shift means for shifting an image optically.
Claim 5
Dependent Claim
29 words
An image pick-up apparatus according to claim 1, wherein the blocking frequency of said filter is set to be approximately within a range from 0.2 Hz to 10 Hz.
Claim 6
Dependent Claim
30 words
An image pick-up apparatus according to claim 2, wherein the passing frequency of said band-pass filter is set to be approximately within a range from 0.2 Hz to 10 Hz.
Claim 7
Dependent Claim
16 words
An image pick-up apparatus according to claim 1, wherein said pick-up apparatus comprises a video camera.
Claim 8
Dependent Claim
18 words
An image pick-up apparatus according to claim 3, wherein said correction means comprises a variable apex angle prism.
Claim 9
Dependent Claim
127 words
An image pick-up apparatus comprising a closed loop control system including: (A) detection means for detecting movement of said image pick-up apparatus; (B) correction means for correcting the movement by shifting an image; and (C) control means having a filter, for controlling said correction means by generating a control signal in response to detection of movement by said detection means and based on the frequency characteristic set by said filter so that a correction amount of said correction means is automatically varied according to a dominant frequency component of the movement detected by said detection means and according to a relationship between the dominant frequency and a transfer function determined by a closed feedback loop formed by said detection means, said correction means, and said control means.
Claim 10
Dependent Claim
127 words
An image pick-up apparatus comprising a closed loop control system including: (A) detection means for detecting movement of said image pick-up apparatus; (B) correction means for correcting the movement by shifting an image; and (C) control means having a filter, for controlling said correction means by generating a control signal in response to detection of movement by said detection means and based on the frequency characteristic set by said filter so that a correction amount of said correction means is automatically varied according to a dominant frequency component of the movement detected by said detection means and according to a relationship between the dominant frequency and a transfer function determined by a closed feedback loop formed by said detection means, said correction means, and said control means.
Claim 11
Dependent Claim
48 words
An image pick-up apparatus according to claim 8, wherein said control means controls said correction means in accordance with the output of said detection means to suppress the movement so that a suppression ratio is set to be a maximum for the movement due to trembling of hand.
Claim 12
Dependent Claim
90 words
An image pick-up apparatus comprising: (A) detection means for detecting movement of an image; (B) correction means for correcting the movement of the image; and (C) control means having filter means, for controlling said correction means by generating a control signal so as to vary a blocking frequency of said filter means by computing information of variations in a dominant frequency component of the movement detected by said detection means and transfer functions of a closed feedback loop formed by said detection means, said correction means, and said control means.
Claim 13
Dependent Claim
90 words
An image pick-up apparatus comprising: (A) detection means for detecting movement of an image; (B) correction means for correcting the movement of the image; and (C) control means having filter means, for controlling said correction means by generating a control signal so as to vary a blocking frequency of said filter means by computing information of variations in a dominant frequency component of the movement detected by said detection means and transfer functions of a closed feedback loop formed by said detection means, said correction means, and said control means.
Claim 14
Dependent Claim
22 words
An image pick-up apparatus according to claim 10, wherein said filter means comprises of a plurality of filters having different blocking frequencies.
Claim 15
Dependent Claim
25 words
An image pick-up apparatus according to claim 11, further comprising a mode selector for switching said plurality of filters in accordance with a pick-up mode.
Claim 16
Dependent Claim
25 words
An image pick-up apparatus according to claim 11, further comprising switching means for automatically switching said plurality of filters in accordance with a pick-up mode.
Claim 17
Dependent Claim
32 words
An image pick-up apparatus according to claim 13, wherein said switching means selects a blocking frequency of said filter means by judging a pick-up situation from a frequency spectrum of an image.
Claim 18
Dependent Claim
29 words
An image pick-up apparatus according to claim 10, further comprising filter control means for adaptively switching the blocking frequency of said filter means in accordance with a pick-up situation.
Claim 19
Dependent Claim
26 words
An image pick-up apparatus according to claim 10, wherein the blocking frequency of said filter means is set to be a frequency of a camera deflection.
Claim 20
Dependent Claim
93 words
An image pick-up apparatus comprising: (A) detection means for detecting movement of a camera; (B) correction means for correcting the movement by shifting an image; and (C) control means having a band-pass filter, for controlling said correction means by generating a control signal so as to vary a pass frequency of said band-pass filter according to both (i) variations of a dominant frequency component of the movement detected by said detection means and (ii) transfer functions of a closed feedback loop formed by said detection means, said correction means, and said control means.
Claim 21
Dependent Claim
93 words
An image pick-up apparatus comprising: (A) detection means for detecting movement of a camera; (B) correction means for correcting the movement by shifting an image; and (C) control means having a band-pass filter, for controlling said correction means by generating a control signal so as to vary a pass frequency of said band-pass filter according to both (i) variations of a dominant frequency component of the movement detected by said detection means and (ii) transfer functions of a closed feedback loop formed by said detection means, said correction means, and said control means.
Claim 22
Dependent Claim
29 words
An image pick-up apparatus according to claim 17, further comprising filter control means for adaptively switching the blocking frequency of said band-pass filter in accordance with a pick-up situation.
Claim 23
Dependent Claim
26 words
An image pick-up apparatus according to claim 17, wherein the blocking frequency of said band-pass filter is set to be the frequency of a camera deflection.
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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) | 2000-09-08 | 2001-03-10 | 2001-09-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-09-08 | 2005-03-10 | 2005-09-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-09-08 | 2009-03-10 | 2009-09-09 | $7700.00 | Window Closed / Lapsed |