EP0395059A2
Expired / Lapsed
EP
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Camera
Assignee: Canon Inc
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Filing: 1990-04-26
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Granted: —
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Expires: 2010-04-26
Abstract
Abstract A camera comprises a selection circuit (6) which selects either an image signal read out from an image sensor or a reproduced signal obtained from a recording medium; an A/D converter (7-1, 7-2, 7-3) which converts into a digital signal the signal selected by the selection circuit; a storage circuit (8) for storing the digital signal; and a reference control circuit which is arranged to control the reference voltage of the A/D converter by using a white balance control (72) signal when the image signal is selected by the selection circuit (6) and to make the reference voltage constant when the reproduced signal is selected.
Inventors
- 👤 Tomishige C/O Tamagawa Jigyosho Taguchi
- 👤 Makoto C/O Tamagawa Jigyosho Kondo
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-09 17:54
CPC Classifications
H; H04; H04N; H04N9/00; H04N9/79; H04N9/80; H04N9/86; H04N23/00; H04N23/80; H04N23/84; H04N23/88; H04N5/00; H04N5/76; H04N5/765; H04N5/77; H04N5/772; H04N5/91
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
102 words
A camera comprising: a) selection means for selecting one of an image signal read out from an image sensor and a reproduced signal obtained from a recording medium; b) an analog-to-digital converter for converting the signal selected by said selection means into a digital signal; c) storage means for storing said digital signal; and d) reference control means arranged to control a reference voltage of said analog-to-digital converter by using a white balance control signal when said image signal is selected by said selection means and to make said reference voltage constant when said reproduced signal is selected by said selection means.
Claim 2
Dependent Claim
102 words
A camera comprising: a) selection means for selecting one of an image signal read out from an image sensor and a reproduced signal obtained from a recording medium; b) an analog-to-digital converter for converting the signal selected by said selection means into a digital signal; c) storage means for storing said digital signal; and d) reference control means arranged to control a reference voltage of said analog-to-digital converter by using a white balance control signal when said image signal is selected by said selection means and to make said reference voltage constant when said reproduced signal is selected by said selection means.
Claim 3
Dependent Claim
22 words
A camera according to claim 1, wherein said selection means is arranged to be capable of selecting also an external input signal.
Claim 4
Dependent Claim
14 words
A camera according to claim 1, wherein said storage means includes a frame memory.
Claim 5
Dependent Claim
31 words
A camera according to claim 2, wherein said reference control means is arranged to make said reference voltage constant also when said external input signal is selected by said selection means.
Claim 6
Dependent Claim
89 words
An image sensing device comprising: a) image sensing means; b) an analog-to-digital converter arranged to analog-to-digital convert an output of said image sensing means, said analog-to-digital converter having a reference signal which is variable; c) selection means disposed between said image sensing means and said analog-to-digital converter and arranged to supply a signal other than the output of said image sensing means to said converter; and d) control means arranged to change over the reference signal of said analog-to-digital converter according to the selection made by said selection means.
Claim 7
Dependent Claim
89 words
An image sensing device comprising: a) image sensing means; b) an analog-to-digital converter arranged to analog-to-digital convert an output of said image sensing means, said analog-to-digital converter having a reference signal which is variable; c) selection means disposed between said image sensing means and said analog-to-digital converter and arranged to supply a signal other than the output of said image sensing means to said converter; and d) control means arranged to change over the reference signal of said analog-to-digital converter according to the selection made by said selection means.
Claim 8
Dependent Claim
21 words
A device according to claim 5, wherein said selection means is arranged to be capable of selecting an external input signal.
Claim 9
Dependent Claim
19 words
A device according to claim 5, further comprising memory means for storing a signal converted by said analog-to-digital converter.
Claim 10
Dependent Claim
19 words
A device according to claim 7, further comprising recording means for recording a signal processed through said memory means.
Claim 11
Dependent Claim
29 words
A device according to claim 8, wherein said selection means is arranged to be capable of supplying to said analog-to-digital converter a reproduced signal obtained from said recording means.
Claim 12
Dependent Claim
32 words
A device according to claim 5, further comprising white balance control means for controlling the reference signal of said analog-to-digital converter according to a color temperature of an object to be photographed.
References Cited (Backward Citations)
No citation records indexed.
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