EP0390055A2
Expired / Lapsed
EP
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Color image processing apparatus with digital color signal compression means
Assignee: Konica Minolta Inc
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Filing: 1990-03-27
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Granted: —
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Expires: 2010-03-27
Abstract
Abstract The invention provides a color image-processing apparatus in which there is provided a color reproduction table for producing plural color image signals for each of a plurality of processing channels in response to digital pixel signals splitted into said plurality of processing channels. There is further provided a signal processor for modifying a bit configuration of the digital pixel signals so that the bit configuration is differently modified corresponding to each of said plurality of processing channels. The produced plural color image signals are composed into one channel to form a new color image.
Inventors
- 👤 Seiichiro Hiratsuka
- 👤 Koji Washio
- 👤 Masahiko Matsunawa
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-09 21:31
CPC Classifications
H; H04; H04N; H04N1/00; H04N1/46; H04N1/56; H04N1/60; H04N1/6016; H04N1/6022; H04N1/6025
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
123 words
An image processing apparatus, comprising: input means for receiving an image information consisting of a plurality of pixel signals, each of said pixel signal formed in a predetermined bit configuration; means for separating each of said plurality of pixel signals into either one of a plurality of processing channels; signal process means for processing said bit configuration of said pixel signals, said processing means performing different processes corresponding to each of said plurality of processing channels and outputting processed pixel signals for each of said plurality of processing channels; image process means for peforming an image process for said processed pixel signal and outputting new pixel signals for each of said plurality of processing channels; and means for composing said new pixel signals.
Claim 2
Dependent Claim
123 words
An image processing apparatus, comprising: input means for receiving an image information consisting of a plurality of pixel signals, each of said pixel signal formed in a predetermined bit configuration; means for separating each of said plurality of pixel signals into either one of a plurality of processing channels; signal process means for processing said bit configuration of said pixel signals, said processing means performing different processes corresponding to each of said plurality of processing channels and outputting processed pixel signals for each of said plurality of processing channels; image process means for peforming an image process for said processed pixel signal and outputting new pixel signals for each of said plurality of processing channels; and means for composing said new pixel signals.
Claim 3
Dependent Claim
25 words
The image processing apparatus of claim 1, wherein said plurality of processing channels comrises two channels consisting of even number channel and odd number channel.
Claim 4
Dependent Claim
26 words
The image processing apparatus of claim 2, wherein said signal processing means eliminates Least Significant Bit from said bit configuration for one of said two channels.
Claim 5
Dependent Claim
39 words
The image processing apparatus of claim 2, wherein said signal processing means adds 1 into pixel signals for the other one of said two channels, thereafter eliminates Least Significant Bit from said bit configuration of said added pixel signals.
Claim 6
Dependent Claim
17 words
The image processing apparatus of claim 1, wherein said image processing means comprises a color reproduction table.
Claim 7
Dependent Claim
31 words
The image processing apparatus of claim 1, wherein said composed new pixel signals are subjected to pulse width modulation having a frequency higher than the frequency corresponding to two pixels .
Claim 8
Dependent Claim
22 words
The image processing apparatus of claim 6, wherein a frequency of the pulse width modulation corresponds to a number of processing channels.
Claim 9
Dependent Claim
32 words
The image processing apparatus of claim 6, wherein a frequency of the pulse width modulation corresponds to two pixels and a reference signal is shaped in the form of a triangulate wave.
References Cited (Backward Citations)
No citation records indexed.
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