US5087978A
Expired / Lapsed
US
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Camera system and interchangeable lens
Assignee: Canon Inc
•
Filing: 1991-05-13
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Granted: 1992-02-11
•
Expires: 2011-05-13
Abstract
Abstract A camera system with an interchangeable lens, including a memory for storing discrimination data for discriminating characteristics of a diaphragm, the memory being provided in the lens unit. Control characteristics of the diaphragm are adjusted inside the camera body on the basis of the discrimination data. Discrimination data on the characteristics of the diaphragm and/or control data according to the characteristics of the diaphragm are stored in the memory of the interchangeable lens.
Inventors
- 👤 Teruo Hieda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 11:59
CPC Classifications
G; G03; G03B; G03B7/00; G03B7/20; G03B17/00; G03B17/02; G03B17/12; G03B17/14; H; H04; H04N; H04N23/00; H04N23/60; H04N23/66; H04N23/663
Claims Analysis
Total Claims: 48
Claim 1
Independent Claim
57 words
A camera system capable of freely interchanging lenses, comprising a camera body, a lens unit, and a memory for storing discrimination data for discriminating operational characteristics of a diaphragm, said memory being provided in said lens unit, wherein characteristics of control of the diaphragm are adjusted inside said camera body on the basis of the discrimination data.
Claim 2
Dependent Claim
57 words
A camera system capable of freely interchanging lenses, comprising a camera body, a lens unit, and a memory for storing discrimination data for discriminating operational characteristics of a diaphragm, said memory being provided in said lens unit, wherein characteristics of control of the diaphragm are adjusted inside said camera body on the basis of the discrimination data.
Claim 3
Dependent Claim
35 words
An interchangeable lens comprising a memory storing data selected from the group consisting of data for discriminating operational characteristics of a diaphragm, control data and combinations thereof according to the operational characteristics of the diaphragm.
Claim 4
Dependent Claim
35 words
An interchangeable lens comprising a memory storing data selected from the group consisting of data for discriminating operational characteristics of a diaphragm, control data and combinations thereof according to the operational characteristics of the diaphragm.
Claim 5
Dependent Claim
53 words
A camera system and an interchangeable lens, comprising a camera body and a memory for storing discrimination data for discriminating operational characteristics of a diaphragm, said memory being provided in said lens unit, wherein characteristics of control of the diaphragm are adjusted inside said camera body on the basis of the discrimination data.
Claim 6
Dependent Claim
53 words
A camera system and an interchangeable lens, comprising a camera body and a memory for storing discrimination data for discriminating operational characteristics of a diaphragm, said memory being provided in said lens unit, wherein characteristics of control of the diaphragm are adjusted inside said camera body on the basis of the discrimination data.
Claim 7
Dependent Claim
45 words
A camera system and an interchangeable lens according to claim 3, further comprising memory means for storing data selected from the group consisting of data for discriminating operational characteristics of the diaphragm, control data and combinations thereof according to the operational characteristics of the diaphragm.
Claim 8
Dependent Claim
84 words
A camera system capable of interchanging lenses, comprising: a camera body; a lens unit; a memory provided in said lens unit, for storing discrimination data for discriminating characteristics of a diaphragm; diaphragm characteristic varying means provided in said camera body, for varying an electric characteristic to vary characteristics of control of the diaphragm; and control means for varying and adjusting, on the basis of the discrimination data, the electric characteristic relating to the control of the diaphragm effected by said diaphragm characteristic varying means.
Claim 9
Dependent Claim
84 words
A camera system capable of interchanging lenses, comprising: a camera body; a lens unit; a memory provided in said lens unit, for storing discrimination data for discriminating characteristics of a diaphragm; diaphragm characteristic varying means provided in said camera body, for varying an electric characteristic to vary characteristics of control of the diaphragm; and control means for varying and adjusting, on the basis of the discrimination data, the electric characteristic relating to the control of the diaphragm effected by said diaphragm characteristic varying means.
Claim 10
Dependent Claim
26 words
A camera system according to claim 5, wherein said control means has a memory relating to control data according to the operational characteristics of the diaphragm.
Claim 11
Dependent Claim
24 words
A camera system according to claim 5, wherein said diaphragm characteristic varying means includes a variable gain amplifier and a variable time constant circuit.
Claim 12
Dependent Claim
106 words
A camera system and an interchangeable lens, comprising: a camera body; diaphragm means provided in said lens unit, for driving a diaphragm; first control means provided in said lens unit and having a memory for storing discrimination data for discriminating operational characteristics of the diaphragm, for controlling and driving said diaphragm means; and second control means provided in said camera body, for supplying control data for controlling and driving said diaphragm means to said first control means on the basis of said discrimination data; wherein said first control means controls said diaphragm means on the basis of the control data supplied from said second control means.
Claim 13
Dependent Claim
106 words
A camera system and an interchangeable lens, comprising: a camera body; diaphragm means provided in said lens unit, for driving a diaphragm; first control means provided in said lens unit and having a memory for storing discrimination data for discriminating operational characteristics of the diaphragm, for controlling and driving said diaphragm means; and second control means provided in said camera body, for supplying control data for controlling and driving said diaphragm means to said first control means on the basis of said discrimination data; wherein said first control means controls said diaphragm means on the basis of the control data supplied from said second control means.
Claim 14
Dependent Claim
44 words
A camera system and an interchangeable lens according to claim 3, further comprising a look-up table relating to control data based on an output level of a video signal in accordance with photographing light from an object and on data supplied from said memory.
Claim 15
Dependent Claim
46 words
A camera system and an interchangeable lens according to claim 9, further comprising a feedback loop for detecting an actual angular aperture of the diaphragm and effecting control of the diaphragm by comparing data on the detected angular aperture and the control data with each other.
Claim 16
Dependent Claim
65 words
A camera system according to claim 7, wherein said variable gain amplifier includes an operational amplifier, a plurality of resistors for varying a gain of said operational amplifier, and a switch circuit for selectively connecting at least one of said plurality of resistors to said operational amplifier, and wherein said control means changes over said switch circuit to vary the gain of said operational amplifier.
Claim 17
Dependent Claim
70 words
A camera system according to claim 7, wherein said variable time constant circuit includes an operational amplifier, a resistor and a plurality of capacitors constituting an integration circuit, and a switch circuit for selectively connecting at least one of said plurality of capacitors to said resistor to constitute the integration circuit, and wherein said control means changes over said switch circuit to vary a time constant of the integration circuit.
Claim 18
Dependent Claim
29 words
A camera system and an interchangeable lens according to claim 8, wherein said first control means includes a microcomputer and detection means for detecting data on the angular aperture.
Claim 19
Dependent Claim
46 words
An interchangeable lens according to claim 2, wherein said control data includes data selected from the group consisting of amplification gain data, time constant data, error detection gain data, phase characteristics data, delay time data, maximum control width data non-sensitive zone width data and combinations thereof.
Claim 20
Dependent Claim
32 words
An interchangeable lens, comprising a memory for memorizing data concerning operational characteristics of a diaphragm, and memory control means for reading and outputting said data from the memory at a predetermined timing.
Claim 21
Dependent Claim
32 words
An interchangeable lens, comprising a memory for memorizing data concerning operational characteristics of a diaphragm, and memory control means for reading and outputting said data from the memory at a predetermined timing.
Claim 22
Dependent Claim
34 words
An interchangeable lens according to claim 15, wherein said control data includes at least one of amplification gain, time constant, error detection gain, phase characteristics, delay time, maximum control width and non-sensitive zone width.
Claim 23
Dependent Claim
19 words
An interchangeable lens according to claim 15, wherein said predetermined timing is one synchronized with a vertical synchronizing signal.
Claim 24
Dependent Claim
15 words
An interchangeable lens according to claim 15, wherein said memory control means includes a microcomputer.
Claim 25
Dependent Claim
57 words
A camera system capable of freely interchanging lenses, comprising a camera body, a lens unit, and a memory for storing discrimination data for discriminating response characteristics of a diaphragm, said memory being provided in said lens unit, wherein characteristics of control of the diaphragm are adjusted inside said camera body on the basis of the discrimination data.
Claim 26
Dependent Claim
57 words
A camera system capable of freely interchanging lenses, comprising a camera body, a lens unit, and a memory for storing discrimination data for discriminating response characteristics of a diaphragm, said memory being provided in said lens unit, wherein characteristics of control of the diaphragm are adjusted inside said camera body on the basis of the discrimination data.
Claim 27
Dependent Claim
35 words
An interchangeable lens comprising a memory storing data selected from the group consisting of data for discriminating response characteristics of a diaphragm, control data and combinations thereof according to the response characteristics of the diaphragm.
Claim 28
Dependent Claim
35 words
An interchangeable lens comprising a memory storing data selected from the group consisting of data for discriminating response characteristics of a diaphragm, control data and combinations thereof according to the response characteristics of the diaphragm.
Claim 29
Dependent Claim
53 words
A camera system and an interchangeable lens, comprising a camera body and a memory for storing discrimination data for discriminating response characteristics of a diaphragm, said memory being provided in said lens unit, wherein characteristics of control of the diaphragm are adjusted inside said camera body on the basis of the discrimination data.
Claim 30
Dependent Claim
53 words
A camera system and an interchangeable lens, comprising a camera body and a memory for storing discrimination data for discriminating response characteristics of a diaphragm, said memory being provided in said lens unit, wherein characteristics of control of the diaphragm are adjusted inside said camera body on the basis of the discrimination data.
Claim 31
Dependent Claim
85 words
A camera system capable of interchanging lenses, comprising: a camera body; a lens unit; a memory provided in said lens unit, for storing discrimination data for discriminating response characteristics of a diaphragm; diaphragm characteristic varying means provided in said camera body, for varying an electric characteristic to vary characteristics of control of the diaphragm; and control means for varying and adjusting, on the basis of the discrimination data, the electric characteristic relating to the control of the diaphragm effected by said diaphragm characteristic varying means.
Claim 32
Dependent Claim
85 words
A camera system capable of interchanging lenses, comprising: a camera body; a lens unit; a memory provided in said lens unit, for storing discrimination data for discriminating response characteristics of a diaphragm; diaphragm characteristic varying means provided in said camera body, for varying an electric characteristic to vary characteristics of control of the diaphragm; and control means for varying and adjusting, on the basis of the discrimination data, the electric characteristic relating to the control of the diaphragm effected by said diaphragm characteristic varying means.
Claim 33
Dependent Claim
106 words
A camera system and an interchangeable lens, comprising: a camera body; diaphragm means provided in said lens unit, for driving a diaphragm; first control means provided in said lens unit and having a memory for storing discrimination data for discriminating response characteristics of the diaphragm, for controlling and driving said diaphragm means; and second control means provided in said camera body, for supplying control data for controlling and driving said diaphragm means to said first control means on the basis of said discrimination data; wherein said first control means controls said diaphragm means on the basis of the control data supplied from said second control means.
Claim 34
Dependent Claim
106 words
A camera system and an interchangeable lens, comprising: a camera body; diaphragm means provided in said lens unit, for driving a diaphragm; first control means provided in said lens unit and having a memory for storing discrimination data for discriminating response characteristics of the diaphragm, for controlling and driving said diaphragm means; and second control means provided in said camera body, for supplying control data for controlling and driving said diaphragm means to said first control means on the basis of said discrimination data; wherein said first control means controls said diaphragm means on the basis of the control data supplied from said second control means.
Claim 35
Dependent Claim
32 words
An interchangeable lens, comprising a memory for memorizing data concerning response characteristics of a diaphragm, and memory control means for reading and outputting said data from the memory at a predetermined timing.
Claim 36
Dependent Claim
32 words
An interchangeable lens, comprising a memory for memorizing data concerning response characteristics of a diaphragm, and memory control means for reading and outputting said data from the memory at a predetermined timing.
Claim 37
Dependent Claim
57 words
A camera system capable of freely interchanging lenses, comprising a camera body, a lens unit, and a memory for storing discrimination data for discriminating drive characteristics of a diaphragm, said memory being provided in said lens unit, wherein characteristics of control of the diaphragm are adjusted inside said camera body on the basis of the discrimination data.
Claim 38
Dependent Claim
57 words
A camera system capable of freely interchanging lenses, comprising a camera body, a lens unit, and a memory for storing discrimination data for discriminating drive characteristics of a diaphragm, said memory being provided in said lens unit, wherein characteristics of control of the diaphragm are adjusted inside said camera body on the basis of the discrimination data.
Claim 39
Dependent Claim
34 words
An interchangeable lens comprising a memory storing data selected from the group consisting of data for discriminating drive characteristics of a diaphragm, control data and combinations thereof according to the characteristics of the diaphragm.
Claim 40
Dependent Claim
34 words
An interchangeable lens comprising a memory storing data selected from the group consisting of data for discriminating drive characteristics of a diaphragm, control data and combinations thereof according to the characteristics of the diaphragm.
Claim 41
Dependent Claim
53 words
A camera system and an interchangeable lens, comprising a camera body and a memory for storing discrimination data for discriminating drive characteristics of a diaphragm, said memory being provided in said lens unit, wherein characteristics of control of the diaphragm are adjusted inside said camera body on the basis of the discrimination data.
Claim 42
Dependent Claim
53 words
A camera system and an interchangeable lens, comprising a camera body and a memory for storing discrimination data for discriminating drive characteristics of a diaphragm, said memory being provided in said lens unit, wherein characteristics of control of the diaphragm are adjusted inside said camera body on the basis of the discrimination data.
Claim 43
Dependent Claim
85 words
A camera system capable of interchanging lenses, comprising: a camera body; a lens unit; a memory provided in said lens unit, for storing discrimination data for discriminating drive characteristics of a diaphragm; diaphragm characteristic varying means provided in said camera body, for varying an electric characteristic to vary characteristics of control of the diaphragm; and control means for varying and adjusting, on the basis of the discrimination data, the electric characteristic relating to the control of the diaphragm effected by said diaphragm characteristic varying means.
Claim 44
Dependent Claim
85 words
A camera system capable of interchanging lenses, comprising: a camera body; a lens unit; a memory provided in said lens unit, for storing discrimination data for discriminating drive characteristics of a diaphragm; diaphragm characteristic varying means provided in said camera body, for varying an electric characteristic to vary characteristics of control of the diaphragm; and control means for varying and adjusting, on the basis of the discrimination data, the electric characteristic relating to the control of the diaphragm effected by said diaphragm characteristic varying means.
Claim 45
Dependent Claim
106 words
A camera system and an interchangeable lens, comprising: a camera body; diaphragm means provided in said lens unit, for driving a diaphragm; first control means provided in said lens unit and having a memory for storing discrimination data for discriminating response characteristics of the diaphragm, for controlling and driving said diaphragm means; and second control means provided in said camera body, for supplying control data for controlling and driving said diaphragm means to said first control means on the basis of said discrimination data; wherein said first control means controls said diaphragm means on the basis of the control data supplied from said second control means.
Claim 46
Dependent Claim
106 words
A camera system and an interchangeable lens, comprising: a camera body; diaphragm means provided in said lens unit, for driving a diaphragm; first control means provided in said lens unit and having a memory for storing discrimination data for discriminating response characteristics of the diaphragm, for controlling and driving said diaphragm means; and second control means provided in said camera body, for supplying control data for controlling and driving said diaphragm means to said first control means on the basis of said discrimination data; wherein said first control means controls said diaphragm means on the basis of the control data supplied from said second control means.
Claim 47
Dependent Claim
32 words
An interchangeable lens, comprising a memory for memorizing data concerning drive characteristics of a diaphragm, and memory control means for reading and outputting said data from the memory at a predetermined timing.
Claim 48
Dependent Claim
32 words
An interchangeable lens, comprising a memory for memorizing data concerning drive characteristics of a diaphragm, and memory control means for reading and outputting said data from the memory at a predetermined timing.
References Cited (Backward Citations)
US4639112A
Cited
US4803509A
Cited
US4748467A
Cited
US4682871A
Cited
US4860113A
Cited
US4855814A
Cited
US4814802A
Cited
US4845555A
Cited
US4868646A
Cited
US4878076A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-02-10 | 1995-08-12 | 1996-02-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-02-10 | 1999-08-12 | 2000-02-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-02-10 | 2003-08-12 | 2004-02-11 | $7700.00 | Window Closed / Lapsed |