US4458270A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Negative to positive image converting apparatus
Assignee: Sony Corp
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Filing: 1982-04-21
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Granted: 1984-07-03
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Expires: 2002-04-21
Abstract
Abstract A negative to positive image converting apparatus comprising a video camera mounted detachably on one end of a base member, a housing mounted onto and substantially at right angles to the other end of base member, the housing comprising a lamp housing and a mirror housing, a color filter means disposed between the lamp housing and the mirror housing, projecting guide pins for guiding a film holder over an aperture in the mirror housing. In use light is projected through a negative in the film holder and via a mirror in the mirror housing to the video camera. The video camera has a negative to positive inversion switch so that a positive output video signal can be obtained.
Inventors
- 👤 Osamu Kuno
- 👤 Tooru Takamiya
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 15:13
CPC Classifications
H; H04; H04N; H04N1/00; H04N1/04; H04N1/10; H04N1/1004; H04N23/00; H04N23/10; H04N2201/00; H04N2201/04; H04N2201/0402; H04N2201/0404
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
93 words
A negative to postive image converting apparatus comprising: a base member having first and second ends, said first end having provision for mounting a video camera thereon; a housing mounted substantially at right angles to said second end of said base member, said housing comprising a lamp housing wherein a lamp holder is disposed, a mirror housing wherein a mirror is disposed for reflecting light originating from said lamp housing to said video camera, and a space between said lamp housing and said mirror housing into which a negative film can be inserted.
Claim 2
Dependent Claim
93 words
A negative to postive image converting apparatus comprising: a base member having first and second ends, said first end having provision for mounting a video camera thereon; a housing mounted substantially at right angles to said second end of said base member, said housing comprising a lamp housing wherein a lamp holder is disposed, a mirror housing wherein a mirror is disposed for reflecting light originating from said lamp housing to said video camera, and a space between said lamp housing and said mirror housing into which a negative film can be inserted.
Claim 3
Dependent Claim
36 words
A negative to positive image converting apparatus according to claim 1 further comprising a color filter means optionally provided in said light path to compensate for the characteristics of the base material of said negative film.
Claim 4
Dependent Claim
25 words
A negative to positive image converting apparatus according to claim 1 wherein guide means for guiding a film holder are provided on said mirror housing.
Claim 5
Dependent Claim
35 words
A negative to positive image converting apparatus according to claim 3 wherein said film holder can be inserted in either of two perpendicular directions in said guide means in the plane of said negative film.
Claim 6
Dependent Claim
22 words
A negative to positive image converting apparatus according to claim 1 wherein said mirror is rotatable manually from outside said mirror housing.
Claim 7
Dependent Claim
43 words
A negative to positive image converting apparatus according to claim 1 in combination with a video camera mounted thereon and comprising a negative to positive inversion switch for switching in or out a color signal processing circuit for negative to positive image conversion.
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) | 1987-07-03 | 1988-01-02 | 1988-07-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-07-03 | 1992-01-02 | 1992-07-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-07-03 | 1996-01-02 | 1996-07-03 | $7700.00 | Window Closed / Lapsed |