US5210559A
Expired / Lapsed
US
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Camera shake correcting device
Assignee: Sony Corp
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Filing: 1992-03-17
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Granted: 1993-05-11
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Expires: 2012-03-17
Abstract
Abstract During a signal inputting period while a dynamic image signal of a present field is input, a movement vector detecting circuit 20 calculates a first movement vector V1 of a present field image with respect to a previous field image with a first accuracy. During a vertical blanking period after the signal inputting period, a second movement vector detecting circuit 30 calculates a second movement V2 according to the first movement vector V1 with a second accuracy higher than the first accuracy. A vector adder 34 composes the movement vectors V1 and V2 to obtain a final movement vector Vf. A second control circuit 71 outputs a reading address corresponding to the final movement vector Vf to a field memory 41, and the field memory 41 outputs an image signal corrected in camera shake. Accordingly, a camera shake correction accuracy is greatly improved without almost increasing a scale of a camera shake correcting circuit constructed as a one-chip circuit.
Inventors
- 👤 Mitsuharu Ohki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 20:05
CPC Classifications
H; H04; H04N; H04N5/00; H04N5/14; H04N5/144; H04N5/145; H04N23/00; H04N23/70; H04N23/76; G; G06; G06T; G06T7/00; G06T7/20; G06T7/223; G06T7/238; H04N19/00; H04N19/50; H04N19/503; H04N19/51; H04N19/527; H04N23/60; H04N23/68; H04N23/681; H04N23/6811; G03; G03B; G03B2217/00; G03B2217/005; G06T2207/00; G06T2207/10; G06T2207/10016
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
211 words
A camera shake correcting device comprising: a memory for storing a representative image data representing an arbitrary n-th field, where n represents a positive integer; a first movement vector detecting circuit for searching a corresponding image data corresponding to said representative image data with a first search point density in an (n+i)-th field, where i represents a positive integer, during a signal inputting period as a dynamic image data of said (n+i)-th field and for outputting a displacement of said corresponding image data with respect to said representative image data as a first movement vector; a field memory for storing said dynamic image data of said (n+i)-th field during said signal inputting period; and a second movement vector detecting circuit for searching said corresponding image data with a second search point density higher than said first search point density in the vicinity of an end of said first movement vector during a vertical blanking period just after said signal inputting period and for outputting a displacement of said corresponding image data with respect to said representative image data as a final movement vector; wherein said dynamic image data of said (n+i)-th field stored in said field memory is read by using a reading address shifted according to said final movement vector.
Claim 2
Dependent Claim
211 words
A camera shake correcting device comprising: a memory for storing a representative image data representing an arbitrary n-th field, where n represents a positive integer; a first movement vector detecting circuit for searching a corresponding image data corresponding to said representative image data with a first search point density in an (n+i)-th field, where i represents a positive integer, during a signal inputting period as a dynamic image data of said (n+i)-th field and for outputting a displacement of said corresponding image data with respect to said representative image data as a first movement vector; a field memory for storing said dynamic image data of said (n+i)-th field during said signal inputting period; and a second movement vector detecting circuit for searching said corresponding image data with a second search point density higher than said first search point density in the vicinity of an end of said first movement vector during a vertical blanking period just after said signal inputting period and for outputting a displacement of said corresponding image data with respect to said representative image data as a final movement vector; wherein said dynamic image data of said (n+i)-th field stored in said field memory is read by using a reading address shifted according to said final movement vector.
Claim 3
Dependent Claim
62 words
The camera shake correcting device as defined in claim 1, wherein said first and second movement vector detecting circuits are replaced by a single movement vector detecting circuit adapted to be controlled in a time sharing fashion such that said first movement vector is output during said signal inputting period and said final movement vector is output during said vertical blanking period.
Claim 4
Dependent Claim
28 words
The camera shake correcting device as defined in claim 1, wherein a plurality of said first movement vector to be output during said signal inputting period are provided.
Claim 5
Dependent Claim
28 words
The camera shake correcting device as defined in claim 2, wherein a plurality of said first movement vector to be output during said signal inputting period are provided.
Claim 6
Dependent Claim
35 words
The camera shake correcting device as defined in claim 1 further comprising a low pass filter for preliminarily smoothing both said representative image data and said corresponding image data for outputting said first movement vector.
Claim 7
Dependent Claim
35 words
The camera shake correcting device as defined in claim 2 further comprising a low pass filter for preliminarily smoothing both said representative image data and said corresponding image data for outputting said first movement vector.
Claim 8
Dependent Claim
35 words
The camera shake correcting device as defined in claim 3 further comprising a low pass filter for preliminarily smoothing both said representative image data and said corresponding image data for outputting said first movement vector.
Claim 9
Dependent Claim
35 words
The camera shake correcting device as defined in claim 4 further comprising a low pass filter for preliminarily smoothing both said representative image data and said corresponding image data for outputting said first movement vector.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1996-05-10 | 1996-11-09 | 1997-05-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-05-10 | 2000-11-09 | 2001-05-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-05-10 | 2004-11-09 | 2005-05-11 | $7700.00 | Window Closed / Lapsed |