Claims
- 1. A shake correcting apparatus for a camera, which comprises:
- shake detecting means for detecting a shake state of a camera;
- shake correcting means for executing shake correction based on a detection result from said shake detecting means;
- shake correction driving means for driving said shake correcting means;
- relative position detecting means for detecting a relative position state of said shake correcting means;
- end position detecting means for detecting an end position state of said shake correcting means;
- first initial-position setting means for finding end positions of a movable range of said shake correcting means and for deriving a center position of the correction range of said shake correcting means from said end positions, said center position being set as an initial position for initialization of said shake correcting means;
- second initial-position setting means for obtaining a difference between a current position of said shake correcting means and said center position, said difference being set as an initialization movement distance for moving said shake correcting means to said center position for initialization of said shake correcting means, based on a detection result from said relative position detecting means;
- discriminating means for discriminating at least one of an operational status of a camera and history data of shake correction driving; and
- selective execution means for selecting either one of said first initial-position setting means and said second initial-position setting means to perform initialization of said shake correcting means based on a discrimination result from said discriminating means, and for causing said shake correction driving means to drive said shake correcting means to execute the initialization of said shake correcting means.
- 2. The shake correcting apparatus according to claim 1, wherein said operational status of a camera discriminated by said discriminating means includes at least one of data relating to manipulation of a power switch, data relating to selection of a shake preventing mode and data relating to selection of a continuous photographing mode.
- 3. The shake correcting apparatus according to claim 1, wherein said history data of shake correction driving includes at least one of frame number data, return number data of a shake correcting operation and total number data relating to a total number of shake correcting operations.
- 4. The shake correcting apparatus according to claim 3, wherein said discriminating means includes storage means for respectively storing reference values of said return number data and said total number data, and comparing means for comparing said reference values stored in said storage means with individual values of said return number data and said total number data.
- 5. The shake correcting apparatus according to claim 4, wherein when said initialization of said shake correcting means is performed by said first initial-position setting means, said return number data and said total number data are reset.
- 6. The shake correcting apparatus according to claim 1, wherein said first initial-position setting means sets said shake correcting means to first move toward a closer one of said two end positions and then to said center position for initialization of said shake correcting means.
- 7. The shake correcting apparatus according to claim 1, wherein two shake correcting apparatuses are incorporated in a camera so as to respectively remove shakes caused in directions of two axes perpendicular to each other, and wherein when one of the two shake correcting apparatuses performs initialization of the shake correcting means thereof by means of the first initial-position setting means thereof based on a discrimination result from said discriminating means, the other of the two shake correcting apparatuses performs initialization of the shake correcting means thereof by means of the first initial-position setting means thereof.
- 8. A shake correcting apparatus for a camera, comprising:
- shake detecting means for detecting a shake state of a camera;
- shake correcting means for executing shake correction based on a detection result from said shake detecting means;
- shake correction driving means for driving said shake correcting means;
- relative position detecting means for detecting a relative position state of said shake correcting means;
- end position detecting means for detecting an end position state of said shake correcting means;
- discriminating means for discriminating at least one of an operational status of a camera and history data of shake correction driving;
- initializing means for setting an initial position of shake correction for initialization of said shake correcting means, based on a detection result from said relative position detecting means; and
- changing means for changing a driving mode of driving said shake correcting means to said initial position set by said initializing means, based on a discrimination result from said discriminating means.
- 9. The shake correcting apparatus according to claim 8, wherein said discriminating means determines the discrimination result based on a discrimination of the number of photographs taken by a camera.
- 10. The shake correcting apparatus according to claim 8, further comprising counting means for counting a number of returns within a correction driving range when said shake correcting apparatus is in use, and wherein said discriminating means determines the discrimination result based on a discrimination of a counting result from said counting means.
- 11. The shake correcting apparatus according to claim 8, further comprising detecting means for detecting a total shift amount for correction of said shake correcting apparatus, and wherein said discriminating means determines the discrimination result based on a discrimination of said total shift amount for correction.
- 12. The shake correcting apparatus according to claim 8, wherein said discriminating means determines the discrimination result based on a discrimination of manipulation of a power switch of a camera.
- 13. The shake correcting apparatus according to claim 8, wherein said discriminating means determines the discrimination result based on a discrimination of a selected shake preventing mode as a photographing mode of a camera.
- 14. The shake correcting apparatus according to claim 8, wherein said discriminating means determines the discrimination result based on a discrimination of a selected continuous photographing mode as a photographing mode of a camera.
- 15. The shake correcting apparatus according to claim 8, wherein when said changing means changes the driving mode of driving said shake correcting means based on the discrimination result from said discriminating means to a high precision initialization mode, data on which discrimination by said discriminating means is based is reset.
- 16. The shake correcting apparatus according to claim 8, wherein when said changing means changes the driving mode of said shake correcting means based on the discrimination result from said discriminating means, an initial position is set at a shifted end of an operational range of said shake correcting apparatus.
- 17. The shake correcting apparatus according to claim 8, wherein said initial setting means comprises:
- first initial-position setting means for finding end positions of a correction range of said shake correcting means and for deriving a center position of the correction range of said shake correcting means from said end positions, said center position being set as an initial position for initialization of said shake correcting means; and
- second initial-position setting means for obtaining a difference between a current position of said shake correcting means and said center position, said difference being set as an initialization movement distance for moving said shake correcting means to said center position for initialization of said shake correcting means;
- wherein said changing means selects one of said first initial-position setting means and said second initial-position setting means based on a discrimination result from said discriminating means to change said driving mode.
- 18. A shake correcting apparatus for a camera, comprising:
- shake correcting means for detecting a shake state of a camera and performing shake correction;
- relative position detecting means for detecting a relative position state of said shake correcting means;
- absolute position detecting means for detecting an absolute position state of said shake correcting means;
- first initial-position setting means for finding a predetermined position of a correction range of said shake correcting means based on said absolute position detecting means, and for setting an initial position with said predetermined position taken as a reference;
- second initial-position setting means for finding said predetermined position by said relative position detecting means, obtaining a difference between a detected current position of said shake correcting means and said center position and moving said current position of said shake correcting means by said difference to set said initial position; and
- selective execution means for selecting either one of said first initial-position setting means and said second initial-position setting means to perform selection of an initial position setting method of said shake correcting means.
- 19. The shake correcting apparatus according to claim 18, further comprising:
- pulse generating means for generating a pulse in accordance with a detected movement of said shake correcting means; and
- count means for counting said pulse generated by said pulse generating means with said predetermined position of said correction range of said shake correcting means taken as a reference, whereby said current position is detected based on a count value from said count means.
Priority Claims (1)
Number |
Date |
Country |
Kind |
6-235722 |
Sep 1994 |
JPX |
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Parent Case Info
This application is a continuation of application Ser. No. 08/534,020, filed Sep. 26, 1995, now abandoned.
US Referenced Citations (10)
Foreign Referenced Citations (1)
Number |
Date |
Country |
3-121435 |
May 1991 |
JPX |
Continuations (1)
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Number |
Date |
Country |
Parent |
534020 |
Sep 1995 |
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