US4495527A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Video recording system with focusing device
Assignee: Canon Inc
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Filing: 1982-02-24
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Granted: 1985-01-22
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Expires: 2002-02-24
Abstract
Abstract A video system includes a video camera for obtaining image signals, and a video recorder for recording the image signals. Driving power provided in the recorder, for loading a tape over a recording drum, is transmitted to the video camera after the tape is fully loaded on the drum. Movable parts in the video camera such as an automatic focus adjusting mechanism, can then be driven by the driving power source in the recorder.
Inventors
- 👤 Susumu Kozuki
- 👤 Masaya Maeda
- 👤 Hiroyuki Takimoto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 09:01
CPC Classifications
G; G11; G11B; G11B15/00; G11B15/60; G11B15/66; G11B15/665; G11B15/6653; G11B31/00; G11B31/003; H; H04; H04N; H04N23/00; H04N23/50; H04N23/55; Y; Y10; Y10S; Y10S358/00; Y10S358/906
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
143 words
A video system comprising: (A) a video camera including: image pickup means for transducing a photo-image to an electrical signal; a lens system for projecting an image of an object to be photographed onto an image receiving surface of said image pickup means; and a lens moving mechanism for moving said lens system; (B) a video signal recording apparatus including: recording means for recording video signals corresponding to the electrical signal on a recording medium; a medium moving mechanism for moving said recording medium; and an electric motor for generating driving torque to move said moving mechanism; (C) connecting means for mechanically connecting said video camera and said recording apparatus directly with each other; and (D) transmission mechanism forming means for mechanically transmitting the driving torque to said lens moving means when said connecting means connects said video camera to said recording apparatus.
Claim 2
Dependent Claim
143 words
A video system comprising: (A) a video camera including: image pickup means for transducing a photo-image to an electrical signal; a lens system for projecting an image of an object to be photographed onto an image receiving surface of said image pickup means; and a lens moving mechanism for moving said lens system; (B) a video signal recording apparatus including: recording means for recording video signals corresponding to the electrical signal on a recording medium; a medium moving mechanism for moving said recording medium; and an electric motor for generating driving torque to move said moving mechanism; (C) connecting means for mechanically connecting said video camera and said recording apparatus directly with each other; and (D) transmission mechanism forming means for mechanically transmitting the driving torque to said lens moving means when said connecting means connects said video camera to said recording apparatus.
Claim 3
Dependent Claim
19 words
A video system according to claim 1, wherein said lens moving mechanism is arranged for adjusting the focusing position.
Claim 4
Dependent Claim
15 words
A video system according to claim 1, wherein said recording medium is a tape-shaped medium.
Claim 5
Dependent Claim
49 words
A video system according to claim 3, wherein said video signal recording apparatus has as a drum for guiding said tape-shaped medium and wherein said medium moving means includes loading means for loading said tape-shaped medium and placing said medium in contact with said drum at a predetermined angle.
Claim 6
Dependent Claim
48 words
A video system according to claim 4, wherein said recording apparatus further includes loading completion detecting means for detecting when loading of said loading means has been completed, and changeover means responsive to detection of said detecting means for making said transmission mechanism forming means ready to operate.
Claim 7
Dependent Claim
38 words
A video system according to claim 4, wherein said video medium moving means in said signal recording apparatus has unloading means for unloading said tape-shaped medium and taking said tape-shaped medium out of contact with said guide drum.
Claim 8
Dependent Claim
30 words
A video system according to claim 6, further including prohibiting means for prohibiting the driving torque from being transmitted to said lens moving mechanism when said unloading means is operating.
Claim 9
Dependent Claim
31 words
A video system according to claim 1, further including control means for prohibiting the driving torque from being transmitted to said lens moving means when said medium moving mechanism is operating.
Claim 10
Dependent Claim
26 words
A video system according to claim 1, further including transmitting means for transmitting said electrical signal to said recording means when said connecting means are connected.
References Cited (Backward Citations)
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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) | 1988-01-22 | 1988-07-23 | 1989-01-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-01-22 | 1992-07-23 | 1993-01-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-01-22 | 1996-07-23 | 1997-01-22 | $7700.00 | Window Closed / Lapsed |