EP0926885A2
Expired / Lapsed
EP
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Solid state image pickup apparatus
Assignee: Canon Inc
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Filing: 1998-12-23
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Granted: —
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Expires: 2018-12-23
Abstract
Abstract In a solid state image pickup apparatus having a plurality of photoelectric conversion elements including a standard signal outputting photoelectric conversion element group for outputting standard signals and an effective signal outputting photoelectric conversion element group for outputting effective signals, a scanner circuit for sequentially reading signals from the photoelectric elements, and a selector circuit for selectively reading an optional element group in the effective signal outputting photoelectric conversion element group, the scanner circuit reads both the standard signal outputting photoelectric conversion element group and the optional element group in the effective signal outputting photoelectric conversion element group selected by the selector circuit.
Inventors
- 👤 Tetsunobu Kochi
- 👤 Isamu Ueno
- 👤 Toru Koizumi
- 👤 Hiroki Hiyama
- 👤 Shigetoshi Sugawa
- 👤 Katsuhisa Ogawa
- 👤 Katsuhito Sakurai
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-08 04:20
CPC Classifications
H; H04; H04N; H04N25/00; H04N25/40; H04N25/42; H04N25/44; H04N25/443; H04N25/445; H04N25/46; H04N25/60; H04N25/70; H04N25/76
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
101 words
A solid state image pickup apparatus
comprising: a plurality of photoelectric conversion elements
including a standard signal outputting photoelectric
conversion element group for outputting standard
signals and an effective signal outputting
photoelectric conversion element group for outputting
effective signals; scanning means for sequentially reading signals
from said photoelectric elements; and selecting means for selectively reading an
optional element group in the effective signal
outputting photoelectric conversion element group, wherein said scanning means reads both the
standard signal outputting photoelectric conversion
element group and the optional element group in the
effective signal outputting photoelectric conversion
element group selected by said selecting means.
Claim 2
Dependent Claim
28 words
A solid state image pickup apparatus according
to claim 1, wherein the standard signal outputting
photoelectric conversion element group is a plurality
of light shielded photoelectric conversion elements.
Claim 3
Dependent Claim
35 words
A solid state image pickup apparatus according
to claim 1 or 2, wherein said scanning means include a
shift register, and said selecting means include means
for changing a clock path of the shift register.
Claim 4
Dependent Claim
19 words
A solid state image pickup apparatus according
to claim 1 or 2, wherein said scanning means include a
decoder.
Claim 5
Dependent Claim
40 words
A solid state image pickup apparatus according
to claim 1 or 2, wherein standard signals from the
standard signal outputting photoelectric conversion
element group are output before effective signals from
the effective signal outputting photoelectric
conversion element group are output.
Claim 6
Dependent Claim
40 words
A solid state image pickup apparatus according
to claim 1 or 2, wherein standard signals from the
standard signal outputting photoelectric conversion
element group are output after effective signals from
the effective signal outputting photoelectric
conversion element group are output.
Claim 7
Dependent Claim
42 words
A solid state image pickup apparatus according
to claim 1 or 2, wherein standard signals from the
standard signal outputting photoelectric conversion
element group are output before and after effective
signals from the effective signal outputting
photoelectric conversion element group are output.
Claim 8
Dependent Claim
30 words
A solid state image pickup apparatus according
to claim 1 or 2, wherein photoelectric conversion
elements of the effective signal outputting
photoelectric conversion element group are disposed in
a matrix.
Claim 9
Dependent Claim
26 words
A solid state image pickup apparatus according
to claim 1, wherein the standard signal outputting
photoelectric conversion element group is a light
shielded photoelectric conversion element.
Claim 10
Dependent Claim
50 words
A solid state image pickup apparatus
according to claim 1 or 2, further comprising
subtracting means for subtracting signal components of
the standard signal outputting photoelectric conversion
group from signal components of the optional element
group in the effective signal outputting photoelectric
conversion element group selected by said selecting
means.
Claim 11
Dependent Claim
154 words
An image pickup system comprising a plurality of photoelectric conversion elements
including a standard signal outputting photoelectric
conversion element group for outputting standard
signals and an effective signal outputting
photoelectric conversion element group for outputting
effective signals; scanning means for sequentially reading signals
from said photoelectric elements; selecting means for selectively reading an
optional element group in the effective signal
outputting photoelectric conversion element group,
wherein said scanning means reads both the standard
signal outputting photoelectric conversion element
group and the optional element group in the effective
signal outputting photoelectric conversion element
group selected by said selecting means; subtracting means for subtracting signal
components of the standard signal outputting
photoelectric conversion group from signal components
of the optional element group in the effective signal
outputting photoelectric conversion element group
selected by said selecting means; and adjusting means for adjusting a focus or an
exposure in accordance with a signal output from said
subtracting means.
Claim 12
Dependent Claim
229 words
An image pickup system comprising a plurality of photoelectric conversion elements
including a standard signal outputting photoelectric
conversion element group for outputting standard
signals and an effective signal outputting
photoelectric conversion element group for outputting
effective signals; scanning means for sequentially reading signals
from said photoelectric elements; selecting means for selectively reading an
optional element group in the effective signal
outputting photoelectric conversion element group,
wherein said scanning means reads both the standard
signal outputting photoelectric conversion element
group and the optional element group in the effective
signal outputting photoelectric conversion element
group selected by said selecting means; subtracting means for subtracting signal
components of the standard signal outputting
photoelectric conversion group from signal components
of the optional element group in the effective signal
outputting photoelectric conversion element group
selected by said selecting means; a signal processing circuit for processing a
signal output from said subtracting means; switching means for switching between a still
image mode and a moving image mode; and controlling means for controlling to make said
selecting means to select all photoelectric conversion
elements in the effective signal outputting
photoelectric conversion element group if said
switching means selects the still image mode, and to
make said selecting means to select a predetermined
area smaller than a whole area of the effective signal
outputting photoelectric conversion element group if
said switching means selects the moving image mode.
References Cited (Backward Citations)
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