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EP0616464A2
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Signal processor
Assignee: Canon Inc
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Filing: 1994-03-14
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Granted: —
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Expires: 2014-03-14
Abstract
Abstract A signal processor with a simplified circuit configuration provides an improved processing speed and can be realized of small size and at inexpensive cost. The signal processor includes signal holding means for holding output signals from plural signal sources (S1 - S4), and signal mixing means (M31 - M34) for mixing at least two signals among the plural signals held to output plural mixed signals. Since the mixed signals are less than the signal sources in number, the small number of signal lines can lead to an increased processing speed. Then the mixed signals corresponding to discrete signals from plural signal sources enables processing without substantially destroying information.
Inventors
- 👤 Isamu C/O Canon Kabushiki Kaisha Ueno
- 👤 Mamoru C/O Canon Kabushiki Kaisha Miyawaki
- 👤 Tetsunobu C/O Canon Kabushiki Kaisha Kohchi
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-09 14:49
CPC Classifications
H; H04; H04N; H04N25/00; H04N25/70; H04N25/76; H04N25/40; H04N25/46; H04N25/779; H04N25/7795
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
49 words
A signal processor comprising: plural signal sources; plural signal holding means for holding output signals from said plural signal sources; and signal mixing means for mixing at least two discrete output signals among the output signals held by the plural signal holding means to output plural discrete mixed signals.
Claim 2
Dependent Claim
49 words
A signal processor comprising: plural signal sources; plural signal holding means for holding output signals from said plural signal sources; and signal mixing means for mixing at least two discrete output signals among the output signals held by the plural signal holding means to output plural discrete mixed signals.
Claim 3
Dependent Claim
16 words
A signal processor according to claim 1, wherein said signal holding means comprises a capacitance element.
Claim 4
Dependent Claim
17 words
A signal processor according to claim 1, wherein said signal holding means comprises a variable capacitance element.
Claim 5
Dependent Claim
17 words
A signal processor according to claim 1, wherein each of signal sources comprises a photoelectric conversion element.
Claim 6
Dependent Claim
21 words
A signal processor according to claim 1, further comprising an amplifier arranged between said signal sources and said signal holding means.
Claim 7
Dependent Claim
30 words
A signal processor according to claim 5, wherein said amplifier includes a circuit for producing a differential between said output signal from a corresponding signal source and a reference signal.
Claim 8
Dependent Claim
64 words
A signal processor comprising: at least four signal sources; plural signal holding means for holding output signals from said signal sources; signal mixing means for mixing at least two discrete signals among output signals held by said plural signal holding means to produce at least two mixed signals; and discrete signal outputting means for producing respectively the output signals from said plural signal sources.
Claim 9
Dependent Claim
64 words
A signal processor comprising: at least four signal sources; plural signal holding means for holding output signals from said signal sources; signal mixing means for mixing at least two discrete signals among output signals held by said plural signal holding means to produce at least two mixed signals; and discrete signal outputting means for producing respectively the output signals from said plural signal sources.
Claim 10
Dependent Claim
53 words
A signal processor according to claim 7, wherein said signal mixing means includes a switch which connects at least said two signal holding means to each other, and a scanning circuit, and wherein said discrete signal outputting means includes a switch arranged to each of said signal holding means, and a scanning circuit.
Claim 11
Dependent Claim
29 words
A signal processor according to claim 7, wherein said discrete signal outputting means selects a discrete signal to be outputted based on information obtained by said signal mixing means.
Claim 12
Dependent Claim
41 words
A signal processor according to claim 7, wherein signal sources of a predetermined number among said plural signal sources output discrete signals based on said mixed signals after said signal mixing means outputs mixed signals from all said plural signal sources.
Claim 13
Dependent Claim
38 words
A signal processor comprising: means for adding signals from plural signal sources, including means for adding signals from said signal sources and converting to a current; and means for outputting a signal is accordance with an added current.
Claim 14
Dependent Claim
38 words
A signal processor comprising: means for adding signals from plural signal sources, including means for adding signals from said signal sources and converting to a current; and means for outputting a signal is accordance with an added current.
Claim 15
Dependent Claim
61 words
Asignal processor according to claim 11, wherein said adding means comprises a MOS transistor having a gate connected to each signal line via a switching MOS transistor, a source connected to a common power source line, and a drain connected in common to said plural signal sources, and a load resistor having one end connected to the drain connected in common.
Claim 16
Dependent Claim
61 words
Asignal processor according to claim 11, wherein said adding means comprises a bipolar transistor having a base connected to each signal line via a switching MOS transistor, an emitter connected to a common power source line, and a collector connected in common to said plural signal sources, and a load resistor having one end connected to the collector connected in common.
Claim 17
Dependent Claim
32 words
A signal processor for reading out data from a plurality of signal sources, and means for selectively outputting data from said signal sources either serially or as combinations of selected sequences thereof.
Claim 18
Dependent Claim
32 words
A signal processor for reading out data from a plurality of signal sources, and means for selectively outputting data from said signal sources either serially or as combinations of selected sequences thereof.
Claim 19
Independent Claim
36 words
A method of signal processing in which data stored in a plurality of signal sources is either output in series or is read from stored combinations of selected sequences of the outputs of the data sources.
Claim 20
Independent Claim
36 words
A method of signal processing in which data stored in a plurality of signal sources is either output in series or is read from stored combinations of selected sequences of the outputs of the data sources.
References Cited (Backward Citations)
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