US4849819A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electronic still camera
Assignee: Nikon Corp
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Filing: 1987-01-23
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Granted: 1989-07-18
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Expires: 2007-01-23
Abstract
Abstract An apparatus for recording information on a sheet-like recording medium having a surface provided with a plurality of recording tracks formed concentrically about the center of rotation and guard bands provided between the recording tracks comprises first driving means for rotating the recording medium coupled to the recording medium, a magnetic recording head contacting the surface of the recording medium, means for energizing the recording head for a predetermined time by a time-serial electrical signal expressing the information, and second driving means for shifting the recording head in a direction across the recording tracks relative to the recording medium. The second driving means is adapted to shift the recording head from on one of the guard bands onto one adjacent recording track before the energizing means energizes the recording head and to shift the recording head from on the one recording track onto another adjacent guard band after the recording head has been energized for the predetermined time.
Inventors
- 👤 Yasuaki Ishiguro
- 👤 Yoshio Nara
- 👤 Yoshitaka Araki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 20:17
CPC Classifications
G; G11; G11B; G11B19/00; G11B19/20; G11B19/02; H; H04; H04N; H04N5/00; H04N5/76; H04N5/765; H04N5/77; H04N5/78; H04N5/781; H04N5/91; Y; Y10; Y10S; Y10S358/00; Y10S358/906
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
199 words
A multi-mode electronic camera, comprising: imaging lens means for forming imaged light flux into an optical image of an object to be photographed; image pick-up means for converting said optical image into the form of an electrical signal; first monitoring means including an optical view finder provided for observation of said optical image; second monitoring means responsive to said electrical signal for reproducing and displaying said optical image; a movable mirror member provided in the optical path of said imaged light flux and displaceable between a first position for directing said imaged light flux from said imaging lens means to said optical view finder and a second position for directing said imaged light flux to said image pick-up means; means for generating a start signal; means for switching between a first monitoring mode utilizing said first monitoring means and a second monitoring mode utilizing said second monitoring means; and means for driving said movable mirror member from said first position to said second position in response to said start signal during said first monitoring mode, and for driving said movable mirror member to said second position when said first monitoring mode is switched over to said second monitoring mode.
Claim 2
Dependent Claim
199 words
A multi-mode electronic camera, comprising: imaging lens means for forming imaged light flux into an optical image of an object to be photographed; image pick-up means for converting said optical image into the form of an electrical signal; first monitoring means including an optical view finder provided for observation of said optical image; second monitoring means responsive to said electrical signal for reproducing and displaying said optical image; a movable mirror member provided in the optical path of said imaged light flux and displaceable between a first position for directing said imaged light flux from said imaging lens means to said optical view finder and a second position for directing said imaged light flux to said image pick-up means; means for generating a start signal; means for switching between a first monitoring mode utilizing said first monitoring means and a second monitoring mode utilizing said second monitoring means; and means for driving said movable mirror member from said first position to said second position in response to said start signal during said first monitoring mode, and for driving said movable mirror member to said second position when said first monitoring mode is switched over to said second monitoring mode.
Claim 3
Dependent Claim
56 words
A camera according to claim 1, wherein said second monitoring means includes an electronic view finder for displaying said optical image on the basis of said electrical signal and wherein said switching means connects said electronic view finder with said image pick-up means to switch over from said first monitoring mode to said second monitoring mode.
Claim 4
Dependent Claim
49 words
A camera according to claim 1 further comprising a focal plane shutter disposed between said image pick-up means and said movable mirror member, and shutter driving means for causing said focal plane shutter to be open when said first monitoring mode is switched over to said second monitoring mode.
Claim 5
Dependent Claim
51 words
A camera according to claim 1 having a still picture photographing mode and a motion picture photographing mode, and wherein said switching means switches to said still picture photographing mode when said first monitoring means is utilized and to said motion picture photographing mode when said second monitoring means is utilized.
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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) | 1992-07-17 | 1993-01-16 | 1993-07-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-07-17 | 1997-01-16 | 1997-07-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-07-17 | 2001-01-16 | 2001-07-18 | $7700.00 | Window Closed / Lapsed |