Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
124 words
In a multi-level halftoning system (100), apparatus (120) for generating a multi-level pixel value for a halftone cell (103) from a magnitude of an intensity value (102), Said apparatus comprising: means (155), responsive to the magnitude of said intensity value, for producing a modulation level as said multi-level pixel value, wherein said producing means comprises a plurality of look-up tables (160) each having values representing a pre-defined transfer function (165', 170', 175', 180'); preference matrix means (150) connected to said producing means, for selecting one of said plurality of look-up tables; and means (140), connected to said selecting means, for controlling said selection such that one look-up table is selected in a pre-defined manner to produce a modulation level as said multi-level pixel value.
Claim 2
Dependent Claim
25 words
The apparatus of claim 1 wherein each said transfer function is quantized into a plurality of levels, whereby each quantization level is a modulation level.
Claim 3
Dependent Claim
39 words
The apparatus of claim 1 wherein said halftone cell comprises a plurality of multi-level pixel values (106) and wherein said controlling means further comprises means for generating (140) a plurality of multi-level pixel values from said intensity value magnitude.
Claim 4
Dependent Claim
57 words
The apparatus of claim 3 wherein said generating means comprises means (140) for repetitively controlling said selection by said preference matrix means of said plurality of look-up tables such that said intensity value magnitude is applied to each selected look-up table to produce a plurality of modulation values as said multi-level pixel values in said halftone cell.
Claim 5
Dependent Claim
25 words
The apparatus of claim 1 wherein said preference matrix having a plurality of matrix elements defines a number of pixel locations in said halftone cell.
Claim 6
Dependent Claim
83 words
In a multi-level halftoning system, a method for generating a multi-level pixel value for a halftone cell from an intensity value having a magnitude, said method comprising the steps of: selecting one of a plurality of look-up tables, wherein each said look-up table contains values representing a pre-defined transfer function; controlling said selection such that one look-up table is selected in a pre-defined manner; and producing, in response to the magnitude of said intensity value, a modulation level as said multi-level pixel value.
Claim 7
Dependent Claim
25 words
The method of claim 6 wherein each said transfer function is quantized into a plurality of levels, whereby each quantization level is a modulation level.
Claim 8
Dependent Claim
37 words
The method of claim 1 wherein said halftone cell comprises a plurality of multi-level pixel values and wherein said method further comprises the step of generating a plurality of multi-level pixel values from said intensity value magnitude.
Claim 9
Dependent Claim
49 words
The method of claim 8 wherein said generating step further comprises the step of repetitively controlling said look-up table selection such that the intensity value magnitude is applied to each selected look-up table to produce a plurality of modulation levels as said multi-level pixel values in said halftone cell.
Claim 10
Dependent Claim
60 words
In a multi-level halftoning system (100), apparatus (120) for generating a multi-level pixel value for a halftone cell (103) from a magnitude of an intensity value (102), said apparatus comprising: means (155), responsive to the magnitude of said intensity value, for producing a modulation level as said multi-level pixel value; and preference matrix means (150) connected to said producing means.