JP2001243484A - Method and device for mixing and outputting gray image and edge-emphasized text - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a print control system and a method for mixing and outputting (e.g. printing or displaying) a gray image and an edge-reinforced text. SOLUTION: The system is equipped with FIFO memories for continuous tone, bitone, and text selection, a pixel extractor, a video spatch which dispatches text data to the pixel extractor, dispatches image data to the FIFO memory for continuous tone, and receives text selection data and sends the text selection data to the FIFO memory for text selection, an edge reinforcing device which processes text data from the FIFO memory for bitone and outputs edge-reinforced text data, a gray palette which processes image data from the FIFO memory for continuous tone, a modulator which is suitably connected to an output device, and a multiplexer which outputs the edge-reinforced text data sent from the edge reinforcing device, the image data processed by the gray palette, and the text selection data sent from the FIFO memory for text selection to the modulator and makes an output device to mix and output the gray image and edge-reinforced text.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

FIELD OF THE INVENTION The present invention relates to a method and apparatus for providing a mixed output of gray image and edge enhanced text.

[0002]

2. Description of the Related Art Various methods have been provided for enhancing the printing result of text edges. A typical example is US Pat. 5,029,108, also 5,396,5
84, also 5,619,334. Many types of methods and devices for color printing are provided,
A typical example is US Patent No. 5,274,42
8 It has also been found that the printing of text edges cannot be improved when the text is on a data line containing a mixed gray image. The present invention has been made to solve this problem.

[0003]

SUMMARY OF THE INVENTION It is a primary object of the present invention to provide a print control system for mixed output (eg, printing or display) of a gray image and edge enhanced text.

It is another object of the present invention to provide a method for mixed output (eg, printing or display) of a gray image and edge enhanced text.

[0005]

SUMMARY OF THE INVENTION One aspect of the present invention provides a mixed output system for gray images and edge enhanced text, the system comprising a continuous tone FIFO.
Memory, FIFO memory for bi-tone, FIFO memory for text selection, pixel extractor (pi
xel extractor), dispatching text data to a pixel extractor, dispatching image data to a continuous tone FIFO memory, receiving text selection data, and transferring the text selection data to a text selection F
Said video dispatcher being a video dispatch to be sent to an IFO memory, wherein said pixel extractor converts text data from said video dispatch from continuous tone to viton, and supplies the converted viton text data to a viton FIFO memory; Bitone FIF
Edge enhancement device for processing text data from O memory to output edge enhanced text data, gray palette for processing image data from continuous tone FIFO memory, modulator suitable for connection to output device, edge enhancement device Outputs the edge-enhanced text data, image data processed by the gray palette, and the text selection data sent from the text selection FIFO memory to the modulator to the modulator to output a mixed output of the gray image and the edge-enhanced text A mixed output system of gray images and edge-enhanced text, characterized in that it comprises a multiplexer, which causes the apparatus to do so.

Another invention according to the present application provides a mixed output system for gray images and edge enhanced text, the system comprising a continuous tone FIFO memory, a bi-tone FIFO memory, and a text selection FIFO memory. Memory, pixel extractor (pixel extra)
ctor), the text data is dispatched to a pixel extractor, the image data is dispatched to a continuous tone FIFO memory, the text selection data is received, and the text selection data is sent to the text selection FIFO memory. The video dispatcher converts the text data from the video dispatch from continuous tone to Viton, and supplies the converted Viton text data to the FIFO memory for Viton; and processes the text data from the FIFO memory for Viton. An edge enhancement device that outputs edge-enhanced text data, a gray dispatch that receives image data from a FIFO memory for continuous tone, a plurality of gray palettes that process image data from the gray dispatch, A plurality of modulators suitable for coupling to the input device, edge-enhanced text data sent from the edge-enhancement device, image data processed by the gray palette, and text-selection data sent to the modulator from the text-selection FIFO memory. A mixed output system of a gray image and an edge-enhanced text, comprising: a multiplexer for outputting to a modulator a mixed output of a gray image and an edge-enhanced text.

[0007] Still another invention according to the present application provides a mixed output method of a gray image and an edge-enhanced text,
The method comprises the steps of providing text and image data to a video dispatch, the video dispatch dispatching the text data to a pixel extractor, dispatching the image data to a continuous tone FIFO memory, and The dispatcher further receives the text selection data and sends the text selection data to a text selection FIFO memory, and the pixel extractor converts the text data from the video dispatch from continuous tone to viton and converts the viton text data to viton. Supplying the text data in the Viton FIFO memory to the edge enhancement device in order to output edge-enhanced edge-enhanced text data; and outputting the image from the continuous tone FIFO memory. Outputting the data to the gray palette and processing the image, edge enhanced text data from the edge enhancement device to perform mixed output of the gray image and edge enhanced text, image data processed with the gray palette, and text selection FIFO
Outputting the text selection data from the memory through the multiplexer to a modulator coupled to the output device, comprising the steps of:
A mixed output method of gray image and edge enhanced text is used.

[0008] Yet another invention according to the present application provides a mixed output method of gray image and edge enhanced text, the method comprising providing text data and image data to a video dispatch, wherein the video dispatch comprises text data. To the pixel extractor and the image data to the continuous tone FIFO memory,
The video dispatcher further receives text selection data and sends the text selection data to a text selection FIFO memory, and the pixel extractor converts the text data from video dispatch from continuous tone to viton and converts the viton text to the viton text. FIF data for Viton
O-memory supplying step, FIF for Viton to output edge-enhanced text data
Outputting the text data in the O memory to the edge enhancement device, outputting the image data from the continuous tone FIFO memory to the gray palette by gray dispatching and performing image processing, and mixing and outputting the gray image and the edge enhanced text. The edge-enhanced text data from the edge-enhancement device, the image data processed by the gray palette, and the FIFO for text selection
Outputting a selected text data from a memory through a multiplexer to a plurality of modulators connected to an output device, and a mixed output method of gray image and edge-enhanced text. .

Each of the inventions according to the present application is described in US Pat. Combined with 5,029,108 and 5,396,584, it constitutes still another invention according to the present application.

[0010]

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a system for mixed output of gray image and edge enhanced text, the system including: That is, a continuous tone FIFO memory, a bi-tone FIFO memory, a text selection FIFO memory, and a pixel extractor (pi
xel extractor), dispatching text data to a pixel extractor, dispatching image data to a continuous tone FIFO memory, receiving text selection data, and transferring the text selection data to a text selection F
Said video dispatcher being a video dispatch to be sent to an IFO memory, wherein said pixel extractor converts text data from said video dispatch from continuous tone to viton, and supplies the converted viton text data to a viton FIFO memory; Bitone FIF
Edge enhancement device for processing text data from O memory to output edge enhanced text data, gray palette for processing image data from continuous tone FIFO memory, modulator suitable for connection to output device, edge enhancement device Outputs the edge-enhanced text data, image data processed by the gray palette, and the text selection data sent from the text selection FIFO memory to the modulator to the modulator to output a mixed output of the gray image and the edge-enhanced text A multiplexer that lets the device do the work.

The present invention also provides a method for mixed output of a gray image and edge enhanced text. The method includes the following steps. That is, it supplies text data and image data to a video dispatch, which dispatches the text data to a pixel extractor,
The image data is dispatched to a continuous tone FIFO memory, the video dispatcher further receives text selection data and sends the text selection data to a text selection FIFO memory, and the pixel extractor transfers the text data from the video dispatch. Converting the continuous tone to viton and supplying the viton text data to the viton FIFO memory, outputting the text data in the viton FIFO memory to the edge enhancement device to output edge-enhanced edge-enhanced text data Step: outputting image data from the FIFO memory for continuous tone to a gray palette for image processing; edge-enhanced text data from the edge enhancement device; image data processed by the gray palette; Text selection data from Preparative selected FIFO memory is transmitted through the multiplexer, the step of causing the mixed output of the gray image and edge enhancement text output to concatenated modulator to an output device.

The present invention also provides another system for mixed output of gray image and edge enhanced text,
The system includes: That is, FIFO for continuous tone
Memory, FIFO memory for bi-tone, FIFO memory for text selection, pixel extractor (pi
xel extractor), dispatching text data to a pixel extractor, dispatching image data to a continuous tone FIFO memory, receiving text selection data, and transferring the text selection data to a text selection F
Said video dispatcher being a video dispatch to be sent to an IFO memory, wherein said pixel extractor converts text data from said video dispatch from continuous tone to viton, and supplies the converted viton text data to a viton FIFO memory; Bitone FIF
An edge enhancement device that processes text data from an O memory to output edge enhanced text data; a gray dispatch that receives image data from a continuous tone FIFO memory; a plurality of gray palettes that processes image data from a gray dispatch; A plurality of modulators suitable for connection to the device, edge-enhanced text data sent from the edge-enhancement device, gray palette processed image data, and a text selection FIF
A multiplexer for outputting the text selection data sent from the O-memory to the modulator to the modulator to cause the output device to perform a mixed output of the gray image and the edge enhanced text.

The present invention also provides another method of mixed output of gray image and edge enhanced text. The method includes the following steps. That is, text data and image data are supplied to a video dispatcher, the video dispatcher dispatches the text data to a pixel extractor, the image data to a continuous tone FIFO memory, and the video dispatcher further outputs text selection data. Receiving the text selection data and sending it to a text selection FIFO memory, wherein the pixel extractor converts the text data from the video dispatch from continuous tone to viton and supplies the viton text data to the viton FIFO memory. Outputting the text data in the Viton FIFO memory to the edge enhancement device to output edge-enhanced edge-enhanced text data; and gray-dispersing image data from the continuous tone FIFO memory. Step of outputting the gray palette to the image processing by the switch,
Edge-enhanced text data from an edge-enhancement device for mixed output of gray image and edge-enhanced text;
Outputting the image data processed by the gray palette and the text selection data from the text selection FIFO memory through a multiplexer to a plurality of modulators coupled to the output device. The output device is a printing device or a display device.

[0014]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Please refer to FIG. 1 and FIG. The print control system of the present invention is provided for providing mixed output of gray images and edge enhanced text (eg, printing on a printing device or displaying on a display device). The printing control system of the present invention is connected to a printer system connected to a host system (such as an external computer or word processor) to form a gray image and edge enhanced text on a photosensitive means (not shown). Used.

[0015] The print control system of the present invention comprises a video dispatch (12).
Dispatches the text data to the pixel extractor (14) for processing, and dispatches the image data to the gray dispatch (20) for processing. The image data dispatched to the gray dispatch (20) is processed by the gray palette (26) and then output to the multiplexer (28), which will be described later. As shown in FIG. 1, image data and text data are input to a video dispatch (12) via a single signal line (8). Alternatively, as shown in FIG. 2, image data is input to video dispatch (12) via image signal line (2), and text data is input to video dispatch (12) via text signal line (4). Is done. In this case, the pixel extractor (pix
el extractor (14) is a FIFO (first-in-
It only sends text data to the first-out memory (18). Nevertheless, the pixel extractor (14) converts the text data from the video dispatch (12) from continuous tone (multi-bit data) to viton (single-bit data) before sending it to the Viton FIFO memory (18). In either case, the text selection data is input to the video dispatch (12) via the text selection signal line (6). This will be described later.

The text data dispatched by the video dispatcher (12) to the pixel extractor (14) is supplied to a Viton FIFO memory (18) and then provided with an edge enhancement device, for example an EET, to provide edge enhancement printing of the text edges. (Edge enhancement
Ment technology) core (24). In the embodiment shown in FIG. 1, the EET core (24)
Is an edge detector (40), a segment change detector (4)
2), including an address generator (44) and a look-up table (46). However, other EETs can be used to provide the required text edge enhancement effect.

After processing by the EET core (24), the text data is selectively output by a multiplexer (28) to a modulator device (30), which is an output device, for example a printer engine for printing. And a printing device or a display device. The text selection data from the video dispatcher (12) is also provided to a text selection FIFO memory (19), which provides a multiplexer (2) to provide correct printing of edge enhanced text.
Send the corresponding data to 8). Alternatively, the text selection data is supplied to the text selection FIFO memory (19) via the pixel extractor (14). The print control system further includes a synchronous impulse generator (32) and a clock generator (34), which are well known in the art and need not be described.

The image data from the video dispatch (12) is supplied to a continuous tone FIFO memory (17) (see FIG. 2). In this embodiment, a color laser printer is used as a printer engine. In this color laser printer, the image is represented by four color planes, typically it is cyan, magenta,
Yellow and black. FIG. 2 shows one of the four gray palettes (26) (FIG. 1) for explanation. Each gray palette (26) generates one color plane each for processing the corresponding continuous tone data of the corresponding color (cyan, magenta, yellow, black). After processing by the gray palette (26), the image data is output to the modulator device (30) by the multiplexer (28). The modulator device (30) converts the input data into data that can be read by a printer engine (eg, a color laser printer) for printing. Preferably, the modulator device (3
0) includes one to four modulators corresponding to the number of gray palettes (26). For example, only one gray palette for monochrome printing (26)
If there is only one, the modulator device (30) contains only one modulator. Alternatively, for a color laser printer as described above, the modulator device (30) would include four modulators.

Thus, the print control system of the present invention performs mixed printing of a gray image and edge-enhanced text.
Alternatively, the gray image and edge enhanced text thus mixed are output to a display device and displayed on a screen or similar device.

US Patent No. 5,029,108 and U.S. Patent No. No. 5,396,584 describes an EET technique used for text edge enhancement. US Patent No. No. 5,029,108 describes a method for enhancing the display image of printing or display equipment. The method includes the following steps. (A) Generate a set of gradient masks. This gradient mask represents multiple edge segment transition states,
It includes a matrix of a × b cells, each of which is assigned a numerical value corresponding to the relative lightness or darkness of a corresponding pixel of an image having an edge segment passing through the center pixel of the matrix. (B) generating a one-bit data signal including a plurality of data bits representing a bitmap image to be printed or displayed on a pixel-by-pixel basis; (C) storing a predetermined number of consecutive bits in a predetermined number of continuous lines of the bitmap image in a temporary storage unit; (D) A subset forming an a × b bit sample matrix is selected, and the center bit of each sample matrix is set as a candidate for correction. (E) Overlapping each sample matrix with each gradient mask, detecting a sample matrix having an edge segment passing through the center bit, and adjacent alignment data in the same state forming the edge segment into a straight line having a single slope It is defined as a sequence of bits and determines the direction of the gradient change. (F) generating a set of reference bit patterns, each reference bit pattern including a sub-pattern of bits corresponding to one possible combination of bits of the same data state aligned in one or more edge segments; The pattern is a × b
The matrix of bits includes a first predetermined number of bits arranged adjacent to one side of the matrix and a second predetermined number of bits arranged adjacent to another side of the matrix. (G) A sample matrix comprising an edge segment passing through the center bit, a predetermined number of adjacent pre-evaluated bits, and a predetermined number of adjacent bits that have not been evaluated is obtained by using at least one of the above-mentioned set of reference bit patterns. Compare with each pattern in the subset. (H) For each match found in the reference pattern containing a segment transition of a predetermined format, generate a correction signal for correcting the center bit of the sample matrix according to the detected transition type. (I) using the correction signal to develop an output corresponding to a print or display device;

US Patent No. US Pat. No. 5,029,108 also describes an apparatus for enhancing the output of a printing or display device for generating digitized images in dot matrix format. This device includes: (A) means for generating a set of gradient masks, each gradient mask representing a plurality of edge segment transition states, including a matrix of a × b cells, each cell passing through a central pixel of the matrix; (B) a plurality of data bits representing a bitmap image to be printed or displayed on a pixel-by-pixel basis. Means for generating a 1-bit data signal including: (c) storage means for temporarily storing a predetermined number of continuous bits in a predetermined number of continuous lines of the bitmap image; (d) a × b bit samples Means for selecting a subset forming a matrix, wherein the center bit of each sample matrix is a candidate for modification; A sample matrix is superimposed on each gradient mask to detect a sample matrix having an edge segment passing through the center bit, and to identify the edge segment with a column of identically aligned adjacent data bits forming a straight line having a single slope. Means for defining and determining the direction of the gradient change; (f) means for generating a set of reference bit patterns, each reference bit pattern being a possible one of bits of the same data state aligned in one or more edge segments. A sub-pattern of bits corresponding to the three combinations, the pattern comprising a matrix of a × b bits, a first predetermined number of bits arranged adjacent to one side of the matrix,
(G) an edge segment passing through the center bit, a predetermined number of adjacent pre-evaluated bits, an unevaluated adjacent predetermined number of bits, including a second predetermined number of bits contiguously located on another side of the matrix; Means for comparing a sample matrix comprising bits with each pattern of at least one subset of the set of reference bit patterns described above; (h)
Means for generating, for each match found in the reference pattern containing a predetermined type of segment transition, a correction signal for correcting the central bit of the sample matrix according to the detected transition type; (i) using the correction signal Means for developing the output corresponding to the printing or display device.

US Patent No. No. 5,396,584 describes a method for enhancing a display image on a printing or display device. The method includes the following steps. (A) Generate a set of gradient masks. This gradient mask represents multiple edge segment transition states,
It includes a matrix of a × b cells, each of which is assigned a numerical value corresponding to the relative lightness or darkness of a corresponding pixel of an image having an edge segment passing through the center pixel of the matrix. (B) generating a one-bit data signal including a plurality of data bits representing a bitmap image to be printed or displayed on a pixel-by-pixel basis; (C) evaluating each of the above-mentioned multi-bit data terms and, if the value is greater than or equal to a predetermined threshold value, generating one data bit in a first state; if the value is less than the threshold value, generating a data bit in a second state; Generate one data bit. (D) storing a predetermined number of continuous data bits in a predetermined number of continuous lines of the bitmap image in a temporary storage unit; (E) Select a subset of data bits forming a sample matrix of a × b data bits whose center bit is a candidate for modification. (F) superimposing the sample matrix with each gradient mask to detect a sample matrix having an edge segment passing through a center bit and adjacent matching of the same data state forming the edge segment as a straight line having a single slope. It is defined as one column of data bits, and the direction of gradient change is detected. (G) a set of reference bit patterns, each including a sub-pattern of bits corresponding to one possible combination of data bits of the same data state that match in one or more edge segments; A reference bit including a matrix of a × b data bits, a first predetermined number of data bits adjacently arranged on one side of the matrix, and a second predetermined number of data bits adjacently arranged on another side of the matrix Generate a pattern. (H) each sample matrix comprising an edge segment passing through the center bit, a predetermined number of adjacent evaluated data bits, and a predetermined number of adjacent unevaluated data bits, wherein at least one of a set of reference bit patterns Compare with one sub-bit. (I) For each match found for a reference bit pattern that includes a predetermined segment transition type, generate a qualification signal to qualify the center bit of the sample matrix with the detected segment type. (J) combining each of the qualifying signals with a corresponding multi-bit data term to generate a compensated value signal; (K) generating a compensated signal pulse using the compensated value signal; The compensated signal pulse is in a first data state for at least a portion of the time period;
Other parts are in the second data state during that period. (L) Develop a corresponding percentage of gray signals using each of the above multi-bit data terms. (M) causing the printing or display device to perform a corresponding output using each of the compensated signal pulses in the first state, and a corresponding percentage if the signal of the compensated value is in the second state. And the corresponding output is performed by the printing or display device using the gray signal.

US Patent No. No. 5,396,584 describes another method for enhancing the display image on a printing or display device. The method includes the following steps. (A) Generate a set of gradient masks. This gradient mask represents multiple edge segment transition states,
It includes a matrix of a × b cells, each of which is assigned a numerical value corresponding to the relative lightness or darkness of a corresponding pixel of an image having an edge segment passing through the center pixel of the matrix. (B) generating a one-bit data signal including a plurality of data bits representing a bitmap image to be printed or displayed on a pixel-by-pixel basis; (C) evaluating each of the above-mentioned multi-bit data terms and, if the value is greater than or equal to a predetermined threshold value, generating one data bit in a first state; if the value is less than the threshold value, generating a data bit in a second state; Generate one data bit. (D) storing a predetermined number of continuous data bits in a predetermined number of continuous lines of the bitmap image in a temporary storage unit; (E) Select a subset of data bits forming a sample matrix of a × b data bits whose center bit is a candidate for modification. (F) superimposing the sample matrix with each gradient mask to detect a sample matrix having an edge segment passing through a center bit and adjacent matching of the same data state forming the edge segment as a straight line having a single slope. It is defined as one column of data bits, and the direction of gradient change is detected. (G) a set of reference bit patterns, each including a sub-pattern of bits corresponding to one possible combination of data bits of the same data state that match in one or more edge segments; The above reference including a matrix of a × b data bits, a first predetermined number of data bits disposed adjacent to one side of the matrix, and a second predetermined number of data bits disposed adjacent to another side of the matrix. Generate a bit pattern. (H) each sample matrix comprising an edge segment passing through the center bit, a predetermined number of adjacent evaluated data bits, and a predetermined number of adjacent unevaluated data bits, wherein at least one of a set of reference bit patterns Compare with one sub-bit. (I) For each match found for a reference bit pattern that includes a predetermined segment transition type, generate a qualification signal to qualify the center bit of the sample matrix with the detected segment type. (J) combining each of the qualifying signals with a corresponding multi-bit data term to generate a compensated value signal; (K) causing the grayscale print or display device to perform a corresponding output using the signal pulse of the compensated value in the first state, and if there is no signal of the compensated value, a multi-bit data term is generated. Used to make grayscale prints or display devices produce corresponding output.

US Patent No. No. 5,396,584 describes an apparatus for enhancing the output of a printing or display device that produces an image in dot matrix format, which includes: (A) means for generating a set of gradient masks, each gradient mask representing a plurality of edge segment transition states, including a matrix of a × b cells, each cell passing through a central pixel of the matrix; Numerical values corresponding to the relative lightness or darkness of the corresponding pixels of the image having the edge segment are respectively assigned. (B) means for generating a one-bit data signal comprising a plurality of data bits representing a bitmap image to be printed or displayed on a pixel-by-pixel basis; (c) evaluating each of the above-mentioned multi-bit data terms; If the value is greater than or equal to a predetermined threshold value, generate one data bit in the first state;
If the value is smaller than the threshold value, 1 of the second state
Means for generating data bits, (d) storage means for temporarily storing a predetermined number of continuous data bits in a predetermined number of continuous lines of the bitmap image, and (e) a center bit is a correction candidate. means for selecting a subset of data bits forming a sample matrix of a × b data bits; (f) detecting a sample matrix comprising an edge segment passing through a center bit by superimposing said sample matrix on each gradient mask; Means for defining the edge segment as a row of adjacent matched data bits of the same data state forming a straight line having a single slope and detecting the direction of the gradient change; (g) in one or more edge segments; Each including a sub-pattern of bits corresponding to one possible combination of data bits of the same data state that matches the A matrix of a × b data bits, a first predetermined number of data bits arranged adjacent to one side of the matrix, and a second predetermined number of data bits arranged adjacent to another side of the matrix. Means for generating a reference bit pattern including a predetermined number of data bits, (h) an edge segment passing through the center bit, a predetermined number of adjacent evaluated data bits, and a predetermined number of adjacent unevaluated data bits. Means for comparing each said sample matrix with at least one sub-bit of a set of reference bit patterns, (i) detecting for each match found for a reference bit pattern comprising a predetermined segment transition type Means for generating a qualifying signal for qualifying the center bit of the sample matrix according to the segment type obtained, (j) Means for combining the qualifying signal with a corresponding multi-bit data term to generate a compensated value signal; (k) means for generating a compensated signal pulse for the compensated value signal; The resulting signal pulse is at least partially in the first data state during the period, and is otherwise in the second data state during the period. (L) means for converting each of the multi-bit data terms into a corresponding percent gray signal; (m) determining whether each of the compensated signal pulses is in a first data state and compensating for the first state. The corresponding signal pulse is transmitted to cause the printing or display device to perform a corresponding output, and when each of the compensated signal pulses is in the second state, the corresponding percent gray signal is transmitted to the printing or display device to output the corresponding output. Means to be done.

US Patent No. No. 5,396,584 describes another device for enhancing the output of a printing or display device that produces an image in dot matrix format, which includes: (A) means for generating a set of gradient masks, each gradient mask representing a plurality of edge segment transition states, including a matrix of a × b cells, each cell passing through a central pixel of the matrix; Numerical values corresponding to the relative lightness or darkness of the corresponding pixels of the image having the edge segment are respectively assigned. (B) means for generating a one-bit data signal comprising a plurality of data bits representing a bitmap image to be printed or displayed on a pixel-by-pixel basis; (c) evaluating each of the above-mentioned multi-bit data terms; If the value is greater than or equal to a predetermined threshold value, generate one data bit in the first state;
If the value is smaller than the threshold value, 1 of the second state
Means for generating data bits, (d) storage means for temporarily storing a predetermined number of continuous data bits in a predetermined number of continuous lines of the bitmap image, and (e) a center bit is a correction candidate. means for selecting a subset of data bits forming a sample matrix of a × b data bits; (f) detecting a sample matrix comprising an edge segment passing through a center bit by superimposing said sample matrix on each gradient mask; Means for defining the edge segment as a row of adjacent matched data bits of the same data state forming a straight line having a single slope and detecting the direction of the gradient change; (g) in one or more edge segments; Each including a sub-pattern of bits corresponding to one possible combination of data bits of the same data state that matches the A matrix of a × b data bits, a first predetermined number of data bits disposed adjacent to one side of the matrix, and a second predetermined number of data bits disposed adjacent to another side of the matrix. Means for generating said reference bit pattern comprising a predetermined number of data bits, (h) an edge segment passing through the central bit, a predetermined number of adjacent evaluated data bits, and a predetermined number of adjacent unevaluated data bits. Means for comparing each said sample matrix with at least one sub-bit of a set of reference bit patterns, (i) for each match found for a reference bit pattern comprising a predetermined segment transition type, Means for generating a modification signal for modifying the center bit of the sample matrix according to the detected segment type; (j) Means for combining the qualifying signal with a corresponding multi-bit data term to generate a compensated value signal; (k) grayscale printing or displaying using the compensated value signal pulse in the first state. Means for causing the device to perform a corresponding output, and in the absence of a signal having a compensated value, to use a multi-bit data term to perform a corresponding output on a gray scale print or display device.

US Patent No. 5,029,108 and 5,396,584 are incorporated herein to form part of the specification of the present application.

The preferred embodiment according to the present invention has been described above. However, modifications or alterations of details that can be made based on the preferred embodiment can achieve the same effects as the inventions claimed in the claims of the present application. Are all included in the claims of the present application.

[0028]

The present invention provides a mixed output (eg, printing or display) of a gray image and edge enhanced text.
And a method for mixed output (eg, printing or display) of gray images and edge enhanced text.

[Brief description of the drawings]

FIG. 1 is a block diagram of a print control system according to the present invention.

FIG. 2 is a block diagram of a method for mixed output of a gray image and edge-enhanced text according to the present invention;

[Explanation of symbols]

 Reference Signs List 12 Video dispatch 14 Pixel extractor 20 Gray dispatch 26 Gray palette 28 Multiplexer 8 Single signal line 2 Image signal line 4 Text signal line 18 FIFO memory for bitone 6 Text selection signal line 24 EET core 40 Edge detector 42 Segment change detector 44 Address Generator 46 Look Up Table 30 Modulator Device 19 Text Selection FIFO Memory 32 Synchronous Impulse Generator 34 Clock Generator 17 Continuous Tone FIFO Memory

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 2C062 AA24 5B050 AA10 BA16 EA06 EA19 FA02 FA03 5C076 AA19 AA31 BA03 BA04 BA05 BA06 BA09 9A001 JJ35 KK42

Claims (16)

[Claims] 1. A mixed output system of gray image and edge enhanced text, comprising: a FIFO memory for continuous tone, a FIFO memory for bi-tone, a FIFO memory for text selection, and a pixel extractor. A video dispatcher for dispatching text data to a pixel extractor, dispatching image data to a continuous tone FIFO memory, receiving text selection data and sending the text selection data to a text selection FIFO memory; Converting the text data from the video dispatch from continuous tone to Viton, and supplying the converted Viton text data to the FIFO memory for Viton; Edge-enhancing device that processes text data from the memory and outputs edge-enhanced text data; gray palette that processes image data from the continuous-tone FIFO memory; modulator suitable for connection to the output device; The output device outputs the sent edge enhanced text data, the image data processed by the gray palette, and the text selection data sent from the text selection FIFO memory to the modulator, and outputs a mixed output of the gray image and the edge enhanced text. A mixed output system for gray image and edge-enhanced text, comprising: a multiplexer; 2. An edge enhancing device is provided for enhancing the output of a printing or display device that produces a digitized image in dot matrix format, the edge enhancing device comprising: (a) generating a set of gradient masks. Means, wherein the gradient mask each represents a plurality of edge segment transition states and includes a matrix of a × b cells, each cell having a relative pixel relative to an image having an edge segment passing through a central pixel of the matrix. (B) means for generating a one-bit data signal including a plurality of data bits representing a bitmap image to be printed or displayed on a pixel-by-pixel basis, c) temporarily storing a predetermined number of consecutive bits in a predetermined number of consecutive lines of the bitmap image; (D) means for selecting a subset forming a sample matrix of a × b bits, wherein the center bit of each sample matrix is a candidate for correction; (e) superimposing each sample matrix on each gradient mask Detecting a sample matrix having an edge segment passing through the center bit, defining the edge segment as a row of identically aligned data bits forming a straight line having a single slope, and defining the direction of the gradient change. Means for determining; (f) means for generating a set of reference bit patterns, each reference bit pattern being a sub-bit of bits corresponding to one possible combination of bits of the same data state aligned in one or more edge segments. A matrix of a × b bits, a first location adjacent to one side of the matrix. And (g) an edge segment passing through the central bit, a predetermined number of pre-evaluated bits adjacent, an unevaluated number of bits, and a second predetermined number of bits adjacently located on another side of the matrix. Means for comparing a sample matrix comprising a predetermined number of adjacent bits to each pattern of at least one subset of the set of reference bit patterns described above; (h) finding a reference pattern including segment transitions of a predetermined format; Means for generating, for each match, a correction signal for correcting the center bit of the sample matrix according to the detected transition type; (i) means for using the correction signal to develop an output corresponding to a printing or display device The mixed output system for gray image and edge-enhanced text according to claim 1, characterized by comprising the above means. . 3. An edge enhancing device is provided for enhancing the output of a printing or display device that produces an image in dot matrix format, the edge enhancing device comprising: (a) means for generating a set of gradient masks. , The gradient mask each representing a plurality of edge segment transition states and includes a matrix of a × b cells, each cell having a relative brightness or relative brightness of a corresponding pixel of an image having an edge segment passing through the center pixel of the matrix. (B) means for generating a one-bit data signal including a plurality of data bits representing a bitmap image to be printed or displayed on a pixel-by-pixel basis; (c) E) evaluating each of the above-mentioned multi-bit data terms, Means for generating one data bit in the second state if the value is less than the threshold value, and (d) a predetermined number of continuations in a predetermined number of continuation lines of the bitmap image. Storage means for temporarily storing data bits; (e) means for selecting a subset of data bits forming a sample matrix of a × b data bits whose center bit is a correction candidate; (f) said sample matrix and each A gradient matrix is superimposed to detect a sample matrix comprising an edge segment passing through the center bit, defining the edge segment as a column of adjacent matched data bits of the same data state forming a straight line having a single slope. Means for detecting the direction of the gradient change; (g) the same data state matching in one or more edge segments A set of reference bit patterns, each including a sub-pattern of bits corresponding to one possible combination of data bits, each of which is a matrix of a × b data bits, a first one adjacent to one side of the matrix. Means for generating a reference bit pattern comprising a predetermined number of data bits and a second predetermined number of data bits located adjacent to the other side of the matrix; (h) an edge segment passing through the central bit; Means for comparing each said sample matrix comprising a number of adjacent evaluated data bits and a predetermined number of adjacent unevaluated data bits with at least one sub-bit of a set of reference bit patterns; (i) a predetermined segment For each match found for a reference bit pattern that includes a transition type, the match depends on the detected segment type. Means for generating a qualifying signal for qualifying the center bit of the sample matrix; (j) means for combining each of the qualifying signals with a corresponding multi-bit data term to generate a signal of a compensated value; (k) Means for generating a compensated signal pulse for the compensated value signal, wherein the compensated signal pulse comprises:
(L) means for converting each said multi-bit data term to a corresponding percent gray signal, wherein at least a portion of the period is in the first data state and the other portion is in the second data state during the period. Determining whether each of the compensated signal pulses is in a first data state and transmitting the compensated signal pulse in the first state to cause a printing or display device to perform a corresponding output; Means for transmitting a corresponding percent gray signal to a printing or display device to perform a corresponding output when the compensated signal pulse is in the second state; Mixed output system of described gray image and edge enhanced text. 4. An edge enhancing device is provided for enhancing the output of a printing or display device that produces an image in dot matrix format, said edge enhancing device comprising: (a) means for generating a set of gradient masks. , The gradient mask represents a plurality of edge segment transition states, each comprising a matrix of a × b cells, each cell having a relative brightness or relative brightness of a corresponding pixel of an image having an edge segment passing through the center pixel of the matrix. (B) means for generating a one-bit data signal including a plurality of data bits representing a bitmap image to be printed or displayed on a pixel-by-pixel basis; (c) E) evaluating each of the above multi-bit data terms, and if the value is equal to or greater than a predetermined threshold value, Means for generating one data bit in the second state if the value is less than the threshold value, and (d) a predetermined number of continuations in a predetermined number of continuation lines of the bitmap image. Storage means for temporarily storing data bits; (e) means for selecting a subset of data bits forming a sample matrix of a × b data bits whose center bit is a correction candidate; (f) said sample matrix and each A gradient matrix is superimposed to detect a sample matrix comprising an edge segment passing through the center bit, defining the edge segment as a column of adjacent matched data bits of the same data state forming a straight line having a single slope. Means for detecting the direction of the gradient change; (g) the same data state matching in one or more edge segments A set of reference bit patterns, each including a sub-pattern of bits corresponding to one possible combination of data bits, each of which is a matrix of a × b data bits, a first one adjacent to one side of the matrix. Means for generating said reference bit pattern comprising a predetermined number of data bits and a second predetermined number of data bits located adjacent to the other side of the matrix; (h) an edge segment passing through the central bit; Means for comparing each said sample matrix comprising a number of adjacent evaluated data bits and a predetermined number of adjacent unevaluated data bits with at least one sub-bit of a set of reference bit patterns; For each match found for the reference bit pattern, including the segment transition type, the detected segment type Means for generating a modification signal for modifying the center bit of the sample matrix, (j) combining each of the modification signals with a corresponding multi-bit data term to generate a signal of a compensated value, (k). Using the signal pulse of the compensated value in the first state, the corresponding output is performed by the gray scale print or display device, and when there is no signal of the compensated value, the multi-bit data term is used. 2. The mixed output system for gray image and edge-enhanced text according to claim 1, further comprising: means for causing a gray scale print or a display device to perform a corresponding output. 5. A mixed output system of a gray image and an edge-enhanced text, the system comprising a FIFO memory for continuous tone, a FIFO memory for bi-tone, a FIFO memory for text selection, and a pixel extractor. A video dispatcher for dispatching text data to a pixel extractor, dispatching image data to a continuous tone FIFO memory, receiving text selection data and sending the text selection data to a text selection FIFO memory; Converting the text data from the video dispatch from continuous tone to Viton, and supplying the converted Viton text data to the Viton FIFO memory; Edge-enhancing device that processes text data from a memory device and outputs edge-enhanced text data, gray dispatch that receives image data from a continuous tone FIFO memory, multiple gray palettes that process image data from a gray dispatch, and an output device A plurality of modulators suitable for concatenating to the modulator, edge-enhanced text data sent from the edge enhancement device, image data processed by the gray palette, and text selection data sent from the text selection FIFO memory to the modulator. A multiplexer for outputting a mixed output of a gray image and an edge-enhanced text to an output device, comprising: a multiplexer for outputting a mixed image of a gray image and an edge-enhanced text. 6. The edge enhancement device is provided for enhancing the output of a printing or display device that produces a digitized image in dot matrix format, the edge enhancement device comprising: (a) generating a set of gradient masks. Means, wherein the gradient mask each represents a plurality of edge segment transition states and includes a matrix of a × b cells, each cell having a relative pixel relative to an image having an edge segment passing through a central pixel of the matrix. (B) means for generating a one-bit data signal including a plurality of data bits representing a bitmap image to be printed or displayed on a pixel-by-pixel basis, c) temporarily storing a predetermined number of consecutive bits in a predetermined number of consecutive lines of the bitmap image; (D) means for selecting a subset forming a sample matrix of a × b bits, wherein the center bit of each sample matrix is a candidate for correction; (e) superimposing each sample matrix on each gradient mask Detecting a sample matrix having an edge segment passing through the center bit, defining the edge segment as a row of identically aligned data bits forming a straight line having a single slope, and defining the direction of the gradient change. Means for determining; (f) means for generating a set of reference bit patterns, each reference bit pattern being a sub-bit of bits corresponding to one possible combination of bits of the same data state aligned in one or more edge segments. A matrix of a × b bits, a first location adjacent to one side of the matrix. And (g) an edge segment passing through the central bit, a predetermined number of pre-evaluated bits adjacent, an unevaluated number of bits, and a second predetermined number of bits adjacently located on another side of the matrix. Means for comparing a sample matrix comprising a predetermined number of adjacent bits to each pattern of at least one subset of the set of reference bit patterns described above; (h) finding a reference pattern including segment transitions of a predetermined format; Means for generating, for each match, a correction signal for correcting the center bit of the sample matrix according to the detected transition type; (i) means for using the correction signal to develop an output corresponding to a printing or display device The mixed output system of a gray image and an edge-enhanced text according to claim 5, characterized by comprising the above means. . 7. The edge enhancement device is provided for enhancing the output of a printing or display device that produces an image in dot matrix format, the edge enhancement device comprising: (a) means for generating a set of gradient masks. , The gradient mask each representing a plurality of edge segment transition states and includes a matrix of a × b cells, each cell having a relative brightness or relative brightness of a corresponding pixel of an image having an edge segment passing through the center pixel of the matrix. (B) means for generating a one-bit data signal including a plurality of data bits representing a bitmap image to be printed or displayed on a pixel-by-pixel basis; (c) E) evaluating each of the above multi-bit data terms, and if the value is equal to or greater than a predetermined threshold value, Means for generating one data bit in the second state if the value is less than the threshold value, and (d) a predetermined number of continuations in a predetermined number of continuation lines of the bitmap image. Storage means for temporarily storing data bits; (e) means for selecting a subset of data bits forming a sample matrix of a × b data bits whose center bit is a correction candidate; (f) said sample matrix and each A gradient matrix is superimposed to detect a sample matrix comprising an edge segment passing through the center bit, defining the edge segment as a column of adjacent matched data bits of the same data state forming a straight line having a single slope. Means for detecting the direction of the gradient change; (g) the same data state matching in one or more edge segments A set of reference bit patterns, each including a sub-pattern of bits corresponding to one possible combination of data bits, each of which is a matrix of a × b data bits, a first one adjacent to one side of the matrix. Means for generating a reference bit pattern comprising a predetermined number of data bits and a second predetermined number of data bits located adjacent to the other side of the matrix; (h) an edge segment passing through the central bit; Means for comparing each said sample matrix comprising a number of adjacent evaluated data bits and a predetermined number of adjacent unevaluated data bits with at least one sub-bit of a set of reference bit patterns; (i) a predetermined segment For each match found for a reference bit pattern that includes a transition type, the match depends on the detected segment type. Means for generating a qualifying signal for qualifying the center bit of the sample matrix; (j) means for combining each of the qualifying signals with a corresponding multi-bit data term to generate a signal of a compensated value; (k) Means for generating a compensated signal pulse for the compensated value signal, wherein the compensated signal pulse comprises:
(L) means for converting each said multi-bit data term to a corresponding percent gray signal, wherein at least a portion of the period is in the first data state and the other portion is in the second data state during the period. Determining whether each of the compensated signal pulses is in a first data state and transmitting the compensated signal pulse in the first state to cause a printing or display device to perform a corresponding output; 6. A means for transmitting a corresponding percent gray signal to a printing or display device to perform a corresponding output when the compensated signal pulse is in the second state, comprising the above means. Mixed output system of described gray image and edge enhanced text. 8. The edge enhancement device is provided for enhancing the output of a printing or display device that produces an image in dot matrix format, the edge enhancement device comprising: (a) means for generating a set of gradient masks. , The gradient mask represents a plurality of edge segment transition states, each comprising a matrix of a × b cells, each cell having a relative brightness or relative brightness of a corresponding pixel of an image having an edge segment passing through the center pixel of the matrix. (B) means for generating a one-bit data signal including a plurality of data bits representing a bitmap image to be printed or displayed on a pixel-by-pixel basis; (c) E) evaluating each of the above multi-bit data terms, and if the value is equal to or greater than a predetermined threshold value, Means for generating one data bit in the second state if the value is less than the threshold value, and (d) a predetermined number of continuations in a predetermined number of continuation lines of the bitmap image. Storage means for temporarily storing data bits; (e) means for selecting a subset of data bits forming a sample matrix of a × b data bits whose center bit is a correction candidate; (f) said sample matrix and each A gradient matrix is superimposed to detect a sample matrix comprising an edge segment passing through the center bit, defining the edge segment as a column of adjacent matched data bits of the same data state forming a straight line having a single slope. Means for detecting the direction of the gradient change; (g) the same data state matching in one or more edge segments A set of reference bit patterns, each including a sub-pattern of bits corresponding to one possible combination of data bits, each of which is a matrix of a × b data bits, a first one adjacent to one side of the matrix. Means for generating said reference bit pattern comprising a predetermined number of data bits and a second predetermined number of data bits located adjacent to the other side of the matrix; (h) an edge segment passing through the central bit; Means for comparing each said sample matrix comprising a number of adjacent evaluated data bits and a predetermined number of adjacent unevaluated data bits with at least one sub-bit of a set of reference bit patterns; For each match found for the reference bit pattern, including the segment transition type, the detected segment type Means for generating a modification signal for modifying the center bit of the sample matrix, (j) combining each of the modification signals with a corresponding multi-bit data term to generate a signal of a compensated value, (k). Using the signal pulse of the compensated value in the first state, the corresponding output is performed by the gray scale print or display device, and when there is no signal of the compensated value, the multi-bit data term is used. 6. The mixed output system for gray image and edge-enhanced text according to claim 5, comprising: means for causing a gray scale print or a display device to perform corresponding output. 9. A method for mixing gray image and edge enhanced text, comprising the steps of: providing text data and image data to a video dispatcher, wherein the video dispatcher dispatches the text data to a pixel extractor. Dispatching the image data to a continuous tone FIFO memory, the video dispatcher further receiving text selection data and sending the text selection data to a text selection FIFO memory, and the pixel extractor transmitting the text selection data from the video dispatch. Converting the data from continuous tone to Viton and supplying the Viton text data to the Viton FIFO memory; and converting the text data in the Viton FIFO memory to output edge enhanced text data. Outputting the image data from the continuous tone FIFO memory to the gray palette for image processing; and outputting the edge from the edge enhancing device to perform mixed output of the gray image and the edge enhanced text. Enhanced text data, image data processed with the gray palette,
Outputting the text selection data from the text selection FIFO memory through a multiplexer to a modulator connected to an output device; and mixing and outputting a gray image and an edge-enhanced text. Method. 10. The method for enhancing a display image of a printing or display device, the edge enhancement device comprising: (a) generating a set of gradient masks, each of the gradient masks being: On behalf of multiple edge segment transition states,
an a × b matrix of cells, each cell being assigned a numerical value corresponding to the relative lightness or darkness of a corresponding pixel of an image having an edge segment passing through the center pixel of the matrix, respectively. Or generating a one-bit data signal comprising a plurality of data bits representative of a displayed bitmap image on a pixel-by-pixel basis; (c) a predetermined number of continuous lines of a predetermined number of said bitmap images. (D) selecting a subset forming an a × b-bit sample matrix, and taking the center bit of each sample matrix as a candidate for correction; (e) storing each sample matrix in a temporary storage means; Detecting a sample matrix having an edge segment that is superimposed on the gradient mask and passes through the central bit, Edge segment is defined as a sequence of identically aligned adjacent data bits forming a straight line having a single slope and determining the direction of the gradient change. (F) generating a set of reference bit patterns, each reference bit The pattern includes a sub-pattern of bits corresponding to one possible combination of bits of the same data state aligned in one or more edge segments, the pattern being a × b
A matrix of bits, including a first predetermined number of bits adjacent to one side of the matrix and a second predetermined number of bits adjacent to another side of the matrix; Comparing a sample matrix comprising an edge segment, a predetermined number of adjacent pre-evaluated bits, and a predetermined number of unevaluated contiguous bits to each pattern of at least one subset of the set of reference bit patterns described above; (H) for each match found in the reference pattern including a segment transition of a predetermined format, generating a correction signal for correcting the center bit of the sample matrix according to the detected transition type; (i) the correction signal Developing the output corresponding to the printing or the display device using the image processing apparatus. -Mixed output method of image and edge enhanced text. 11. The edge enhancement device uses a method for enhancing a display image on a printing or display device, the method comprising: (a) generating a set of gradient masks. This gradient mask represents multiple edge segment transition states,
an a × b matrix of cells, each cell being assigned a numerical value corresponding to the relative lightness or darkness of a corresponding pixel of an image having an edge segment passing through the center pixel of the matrix, respectively. Alternatively, generating one data signal including a plurality of multi-bit data terms representing the displayed bitmap image. (C) Evaluating each of the above-described multi-bit data terms, and if the value is greater than or equal to a predetermined threshold value Generating one data bit in the first state, and generating a data bit in the second state if the value is less than the threshold value; (d) a predetermined number of a predetermined number of consecutive lines of the bitmap image. (E) sample data of a × b data bits whose center bit is a correction candidate. Selecting a subset of the data bits that form the risk; (f) superimposing the sample matrix on each gradient mask to detect a sample matrix comprising an edge segment passing through a center bit and forming the edge segment into a single slope. Defining a row of adjacent matched data bits of the same data state forming a straight line having the same data state and detecting the direction of the gradient change; (g) data bits of the same data state matching in one or more edge segments A set of reference bit patterns, each including a sub-pattern of bits corresponding to one possible combination of: a matrix of a × b data bits, a first one adjacent to one side of the matrix. A predetermined number of data bits and a second predetermined number of data bits arranged adjacent to another side of the matrix. Generating a reference bit pattern; (h) each of said sample matrices comprising an edge segment passing through the center bit, a predetermined number of adjacent evaluated data bits, and a predetermined number of adjacent unevaluated data bits, Comparing with at least one sub-bit of a set of reference bit patterns; (i) for each match found for a reference bit pattern including a predetermined segment transition type, the center bit of the sample matrix according to the detected segment type; (J) combining each of the above-mentioned decoration signals with a corresponding multi-bit data term to generate a signal of a compensated value; and (k) generating a signal of a compensated value. Use to generate a compensated signal pulse, wherein the compensated signal pulse has at least a portion of its duration. Located on the first data state,
The other portion is in a second data state during that period; (l) developing a corresponding percentage of the gray signal using each of the multi-bit data terms; (m) each compensated in the first state. Using the signal pulse to cause the printing or display device to perform the corresponding output, but if the signal of the compensated value is in the second state, use the corresponding percentage of the gray signal to support the printing or the display device. The method of claim 9, further comprising the steps of: outputting the gray image and the edge-enhanced text. 12. The edge enhancement device uses a method of enhancing a display image on a printing or display device, the method comprising: (a) generating a set of gradient masks, each gradient mask being On behalf of multiple edge segment transition states,
an a × b matrix of cells, each cell being assigned a numerical value corresponding to the relative lightness or darkness of a corresponding pixel of an image having an edge segment passing through the center pixel of the matrix, respectively. Or generating a one-bit data signal comprising a plurality of data bits representative of the displayed bitmap image on a pixel-by-pixel basis; (c) evaluating each of the above-described multi-bit data terms and determining if the value is a predetermined threshold If it is greater than or equal to the value, one data bit in the first state is generated, and if the value is less than the threshold value, one data bit in the second state is generated. (D) a predetermined number of consecutive bits of the bitmap image A predetermined number of continuous data bits in the line are stored in the temporary storage means. (E) a × b data whose center bit is a correction candidate Selecting a subset of the data bits forming a sample matrix of bits; (f) detecting a sample matrix comprising an edge segment passing through a center bit by superimposing the sample matrix on each gradient mask and simply identifying the edge segment. (G) Identical data states that match in one or more edge segments, defined as a row of adjacent aligned data bits of the same data state forming a straight line with one slope; A set of reference bit patterns, each including a sub-pattern of bits corresponding to one possible combination of the data bits, each being a matrix of a × b data bits, arranged adjacent to one side of the matrix. A first predetermined number of data bits, and a second predetermined number of data bits arranged adjacent to another side of the matrix. (H) each comprising an edge segment passing through the center bit, a predetermined number of adjacent evaluated data bits, and a predetermined number of adjacent unevaluated data bits. Comparing the sample matrix with at least one sub-bit of a set of reference bit patterns; (i) for each match found for a reference bit pattern including a predetermined segment transition type, a detected segment type; Generating a qualifying signal for qualifying the center bit of the sample matrix by: (j) combining each of the qualifying signals with a corresponding multi-bit data term to generate a signal of a compensated value; (k) Compatible output to grayscale print or display device using signal pulse with compensated value of 1 state 10. The method according to claim 9, further comprising the step of: performing a grayscale print using a multi-bit data term or a corresponding output using a multi-bit data term when there is no signal having a compensated value. Mixed output method of gray image and edge enhanced text described in 1. 13. A method for mixed output of gray image and edge enhanced text, comprising: providing text data and image data to a video dispatcher, the video dispatcher dispatching the text data to a pixel extractor; Dispatching to a continuous tone FIFO memory, wherein the video dispatcher further receives text selection data and sends the text selection data to a text selection FIFO memory, and the pixel extractor converts the text data from the video dispatch from the continuous tone. Converting the bitoned text data to the biton FIFO memory, and outputting the text data in the biton FIFO memory to the edge enhancement device in order to output edge-enhanced edge-enhanced text data. A step, edge enhancement text data of the image data from the FIFO memory for continuous tone step of outputting the gray palette to the image processing by the gray dispatching, from the edge enhancement devices for mixing the output of the gray image and edge enhancement text to,
Outputting the image data processed by the gray palette and the text selection data from the text selection FIFO memory to a plurality of modulators connected to an output device through a multiplexer. Mixed output method of gray image and edge enhanced text. 14. The method of claim 1, wherein the edge enhancement device uses a method of enhancing a display image on a printing or display device, the method comprising: (a) generating a set of gradient masks, each gradient mask being On behalf of multiple edge segment transition states,
an a × b matrix of cells, each cell being assigned a numerical value corresponding to the relative lightness or darkness of a corresponding pixel of an image having an edge segment passing through the center pixel of the matrix, respectively. Or generating a one-bit data signal comprising a plurality of data bits representative of a displayed bitmap image on a pixel-by-pixel basis; (c) a predetermined number of continuous lines of a predetermined number of said bitmap images. (D) selecting a subset forming an a × b-bit sample matrix, and taking the center bit of each sample matrix as a candidate for correction; (e) storing each sample matrix in a temporary storage means; Detecting a sample matrix having an edge segment that is superimposed on the gradient mask and passes through the central bit, Edge segment is defined as a sequence of identically aligned adjacent data bits forming a straight line having a single slope and determining the direction of the gradient change. (F) generating a set of reference bit patterns, each reference bit The pattern includes a sub-pattern of bits corresponding to one possible combination of bits of the same data state aligned in one or more edge segments, the pattern being a × b
A matrix of bits, including a first predetermined number of bits adjacent to one side of the matrix and a second predetermined number of bits adjacent to another side of the matrix; Comparing a sample matrix comprising an edge segment, a predetermined number of adjacent pre-evaluated bits, and a predetermined number of non-evaluated adjacent bits to each pattern of at least one subset of the set of reference bit patterns described above; (H) generating, for each match found in the reference pattern including a segment transition of a predetermined format, a correction signal for correcting the center bit of the sample matrix according to the detected transition format; (i) the correction signal 14. The method according to claim 13, further comprising the steps of: developing an output corresponding to a print or display device using Over image and edge enhancement mixing output method of text. 15. The method for enhancing a display image of a printing or display device, the method comprising: (a) generating a set of gradient masks. This gradient mask represents multiple edge segment transition states,
an a × b matrix of cells, each cell being assigned a numerical value corresponding to the relative lightness or darkness of a corresponding pixel of an image having an edge segment passing through the center pixel of the matrix, respectively. Alternatively, generating one data signal including a plurality of multi-bit data terms representing the displayed bitmap image. (C) Evaluating each of the above-described multi-bit data terms, and if the value is greater than or equal to a predetermined threshold value Generating one data bit in the first state, and generating a data bit in the second state if the value is less than the threshold value; (d) a predetermined number of a predetermined number of consecutive lines of the bitmap image. (E) sample data of a × b data bits whose center bit is a correction candidate. Selecting a subset of the data bits that form the risk; (f) superimposing the sample matrix on each gradient mask to detect a sample matrix comprising an edge segment passing through a center bit and forming the edge segment into a single slope. Defining a row of adjacent matched data bits of the same data state forming a straight line having the same data state and detecting the direction of the gradient change; (g) data bits of the same data state matching in one or more edge segments A set of reference bit patterns, each including a sub-pattern of bits corresponding to one possible combination of: a matrix of a × b data bits, a first one adjacent to one side of the matrix. A predetermined number of data bits and a second predetermined number of data bits arranged adjacent to another side of the matrix. Generating a reference bit pattern; (h) each of said sample matrices comprising an edge segment passing through the center bit, a predetermined number of adjacent evaluated data bits, and a predetermined number of adjacent unevaluated data bits, Comparing with at least one sub-bit of a set of reference bit patterns; (i) for each match found for a reference bit pattern including a predetermined segment transition type, the center bit of the sample matrix according to the detected segment type; (J) combining each of the above-mentioned decoration signals with a corresponding multi-bit data term to generate a signal of a compensated value; and (k) generating a signal of a compensated value. Use to generate a compensated signal pulse, wherein the compensated signal pulse has at least a portion of its duration. Located on the first data state,
The other portion is in a second data state during that period; (l) developing a corresponding percentage of the gray signal using each of the multi-bit data terms; (m) each compensated for the first state. Using the signal pulse to cause the printing or display device to perform a corresponding output, but if the signal of the compensated value is in the second state, the corresponding percentage of the gray signal is used to support the printing or the display device. The method of claim 13, further comprising the steps of: outputting the mixed image. 15. 16. The method for enhancing a display image of a printing or display device, the method comprising: (a) generating a set of gradient masks, each gradient mask comprising: On behalf of multiple edge segment transition states,
an a × b matrix of cells, each cell being assigned a numerical value corresponding to the relative lightness or darkness of a corresponding pixel of an image having an edge segment passing through the center pixel of the matrix, respectively. Or generating a one-bit data signal comprising a plurality of data bits representative of the displayed bitmap image on a pixel-by-pixel basis; (c) evaluating each of the above-described multi-bit data terms and determining if the value is a predetermined threshold If it is greater than or equal to the value, one data bit in the first state is generated, and if the value is less than the threshold value, one data bit in the second state is generated. (D) a predetermined number of consecutive bits of the bitmap image A predetermined number of continuous data bits in the line are stored in the temporary storage means. (E) a × b data whose center bit is a correction candidate Selecting a subset of the data bits forming a sample matrix of bits; (f) detecting a sample matrix comprising an edge segment passing through a center bit by superimposing the sample matrix on each gradient mask and simply identifying the edge segment. (G) Identical data states that match in one or more edge segments, defined as a row of adjacent aligned data bits of the same data state forming a straight line with one slope; A set of reference bit patterns, each including a sub-pattern of bits corresponding to one possible combination of the data bits, each being a matrix of a × b data bits, arranged adjacent to one side of the matrix. A first predetermined number of data bits, and a second predetermined number of data bits arranged adjacent to another side of the matrix. (H) each comprising an edge segment passing through the center bit, a predetermined number of adjacent evaluated data bits, and a predetermined number of adjacent unevaluated data bits. Comparing the sample matrix with at least one sub-bit of a set of reference bit patterns; (i) for each match found for a reference bit pattern including a predetermined segment transition type, a detected segment type; Generating a qualifying signal for qualifying the center bit of the sample matrix by: (j) combining each of the qualifying signals with a corresponding multi-bit data term to generate a signal of a compensated value; (k) Compatible output to grayscale print or display device using signal pulse with compensated value of 1 state 14. The method according to claim 13, further comprising the step of: performing a grayscale print using a multi-bit data term or a corresponding output on a display device when there is no signal of a compensated value. Mixed output method of gray image and edge enhanced text described in 1.