JP2006209256A - Image output system - Google Patents

Image output system Download PDF

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JP2006209256A
JP2006209256A JP2005017340A JP2005017340A JP2006209256A JP 2006209256 A JP2006209256 A JP 2006209256A JP 2005017340 A JP2005017340 A JP 2005017340A JP 2005017340 A JP2005017340 A JP 2005017340A JP 2006209256 A JP2006209256 A JP 2006209256A
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data
image output
library
image processing
image
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JP2005017340A
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JP4527556B2 (en
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Norio Saito
紀夫 齋藤
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Ricoh Co Ltd
株式会社リコー
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Abstract

PROBLEM TO BE SOLVED: To provide an image output system in which a DG library for accessing DG data is prepared, access to DG data from an external program is limited to only via the library interface, and internal specification of DG data is not required to be disclosed. To provide.
Only a DG library 201 accesses DG data 202, and an image output control device 203 and an image output device 204 can access only the DG library 201. In this example, each device can share the DG library 201 and use it. With this configuration, when the image processing program in the image processing apparatus handles the DG data 202, the DG library 201 is used without reading the DG data 202 by the own program, so Even if the data specifications and the data body are changed, the image processing program is not affected and the apparatus can operate normally.
[Selection] Figure 1

Description

  The present invention relates to a printer driver and an image output system that efficiently performs image processing by a printer.

In an image output system constituted by an image processing apparatus such as a printer driver or a printer, various data related to image processing performed in the image output apparatus has been conventionally stored in the image processing apparatus as one package [DG (dither gamma) data]. It has been installed and used. In order to access the DG data, the internal specification of the DG data has been made public, and each image processing program has independently accessed the access method according to it.
FIG. 4 shows the configuration of a conventional image output system. Here, the image output apparatus 102, the other apparatuses 103, and the image output control apparatus 101 are connected via a network, and the DG data 104 is mounted on each apparatus. Here, the image output apparatus 102 is a printer or the like that receives a print command from the image output control apparatus 101 via a network and performs paper output, and performs image processing while using the DG data 104 in the image output apparatus 102. I was doing it.

However, according to the conventional method, when the data specification needs to be changed by disclosing the internal specification of the data, the change must be made known to all the program developers who use it. In addition to that, there were many problems such as the need to modify the program on the user side.
Accordingly, a first object of the present invention is to prepare a DG library (dedicated program for reading DG data) for accessing DG data, and access to DG data from an external program is limited to only via the library interface. The present invention also provides an image output system in which the internal specification of DG data is not required to be disclosed.
A second object of the present invention is to provide an image output system in which DG data is divided into a header part and a data part so that access from the DG library can be performed easily and at high speed. . .
Furthermore, a third object of the present invention is to provide an image output system that can be used in various apparatuses by using a DG library as a computer program.

  According to the first aspect of the present invention, in an image output system in which a plurality of image processing apparatuses are connected via a network to process and output predetermined image data, parameters used for the plurality of image processing are set as one package. DG data and a DG library that is a read-only program for the DG data, and each of the image processing devices can access the DG data only through the DG library. Achieve.

According to a second aspect of the present invention, in the first aspect of the present invention, the DG library can access the DG data only by using a public interface for DG data access.
According to a third aspect of the present invention, in the first or second aspect of the present invention, the DG library is incorporated in the image processing apparatus.
According to a fourth aspect of the present invention, in the first or second aspect of the present invention, the DG library is configured as an independent apparatus outside the image processing apparatus.

According to a fifth aspect of the present invention, in the first, second, third, or fourth aspect, the DG data includes a file header, a common header, each data header portion, and a data portion. Thus, the second object is achieved.
In the invention of claim 6, in the invention of claim 5, the file header portion of the DG data has a format of the DG data itself depending on the use environment, and indicates the format of the data below the flag portion. Features.
In the invention according to claim 7, in the invention according to claim 5 or 6, the DG data further includes a data size, a creation date and time, a type of data included therein, the number of elements, etc. It is characterized by making it possible to identify information related to.
In the invention described in claim 8, in the invention described in claim 5, claim 6 or claim 7, the common header part of the DG data is a drawing mode that varies depending on resolution, paper type, number of colors, data depth, and the like. It is possible to identify information relating to the drawing mode, and to indicate data offsets to drawing parameters related to these drawing modes.
According to a ninth aspect of the invention, in the fifth, sixth, seventh or eighth aspect of the invention, each data header portion of the DG data can identify a plurality of parameters in the DG data. Including dither data, error diffusion data, γ data, total amount regulation values, and the like, and offset values to these data.

The invention according to claim 10 is the invention according to any one of claims 1 to 9, wherein the DG library is a computer program and can be written and rewritten on a memory such as a ROM or a RAM. Thus, the third object is achieved.
The invention according to claim 11 is the invention according to claim 10, characterized in that the computer program which is the DG library can be mounted on a memory in each image processing apparatus.

In the first, third, and fourth aspects of the invention, the image processing apparatus using the DG library can use the DG library without being aware of the internal specifications of the DG data and the operating environment. Many parameters necessary for image processing can be used in various devices and various environments. Further, it is not necessary to develop a program for reading DG data in each image processing apparatus, and it is possible to efficiently develop an image processing apparatus.
According to the second aspect of the present invention, only the interface of the DG library is disclosed to the external device, so that even if the data in the DG data is changed, the external device is not aware of the DG data using the same interface. Can be accessed.
In the inventions according to claims 5 to 9, by accessing the DG data described in these claims using a DG library, many parameters necessary for image processing can be obtained without being aware of internal specifications. Can be obtained and used easily and quickly.
In the tenth and eleventh aspects of the present invention, since the DG library is realized as a computer program on a memory and can be installed in various devices as an image processing program, a printer driver, various printers, or a display An image output system that can be incorporated and used in a driver or the like and can use DG data without depending on the DG data format can be realized.

Hereinafter, a preferred embodiment of the present invention will be described in detail with reference to FIGS.
FIG. 1 is a block diagram illustrating the configuration of the image output system according to the present embodiment.
In this embodiment, in an image output device such as a printer or a display, parameters used for image processing that requires many parameters such as dither processing, error diffusion processing, γ processing, total amount regulation, etc. It is handled as one package (hereinafter referred to as DG data).
In the example shown in FIG. 1, only the DG library 201 accesses the DG data 202, and the image output control device 203 and the image output device 204 can access only the DG library 201. This example is characterized in that each device can share and use the DG library 201.
With this configuration, when the image processing program in the image processing apparatus handles the DG data 202, the DG library 201 is used without reading the DG data 202 by the own program, so Even if the data specification and the data body are changed, the image processing apparatus can operate normally without being affected by the image processing program.

Further, since the DG data 202 constitutes internal data so as not to depend on the environment, the DG data 202 can be used in common in a plurality of environments having different byte orders, for example.
Furthermore, the DG data 202 does not disclose the internal specifications to the DG library 201 using side. The user of the DG library 201 can access the DG data 202 only by using a public interface for DG data access.

FIG. 2 is a block diagram showing another embodiment. As shown in this figure, by incorporating a DG library 303 in each of the image output devices 301 and 302, the DG data 304 can be accessed through this.
Further, by configuring the DG library 303 as an independent device, the DG library 303 can be used by the image processing device, and can be used by both the image output control device (printer driver and the like) 301 and the image output device (printer and the like). You can also

FIG. 3 shows the data structure inside the DG data. A header part and a data part are located for each drawing mode, and an offset value to the data part is provided in each header part.
This DG data can be composed of a file header, a common header, each data header portion, and a data portion.
In addition, the file header part has a format of DG data itself that depends on the use environment, for example, a flag related to byte order or compression, and indicates the data format below the flag part. It can also be made available without dependence.

Furthermore, it is possible to identify information relating to the entire DG data, including the data size, creation date and time, the type of data included therein, the number of elements, and the like.
The common header portion can identify information relating to a drawing mode that varies depending on the resolution, paper type, number of colors, data depth, and the like, and can also indicate a data offset to a drawing parameter relating to each drawing mode.
Each data header portion can identify a plurality of parameters in DG data, and includes identification of dither data, error diffusion data, γ data, total amount regulation value, and the like, and offset values to these data.

The DG library is a computer program, and is a program that can be written and rewritten on a memory such as a ROM (Read Only Memory) or a RAM (Random Access Memory).
As described above, by realizing the DG library on the memory as a computer program, it is possible to realize an image output system in which an image processing apparatus such as a printer driver or a printer uses DG data without depending on the DG data format.

1 is a block diagram illustrating a configuration of an image output system according to an embodiment. It is the block diagram which showed the structure of the image output system which concerns on another Example. It is the figure which showed the data structure inside DG data. It is the block diagram which showed the structure of the conventional image output system.

Explanation of symbols

101 Image Output Control Device 102 Image Output Device 103 Other Device 104 DG Data 201 DG Library 202 DG Data 203 Image Output Control Device 204 Image Output Device 205 Other Device 301 Image Output Control Device 302 Image Output Control Device 303 DG Library 304 DG data

Claims (11)

  1. In an image output system for connecting a plurality of image processing apparatuses via a network, processing predetermined image data, and outputting the data,
    DG data in which one parameter is used for a plurality of image processing, and
    It is equipped with a DG library that is a read-only program for this DG data,
    Each image processing apparatus can access the DG data only through the DG library.
  2. The image output system according to claim 1, wherein the DG library can access the DG data only by using a public interface for DG data access.
  3. The image output system according to claim 1, wherein the DG library is incorporated in the image processing apparatus.
  4. The image output system according to claim 1, wherein the DG library is configured as an independent device outside the image processing device.
  5. The image output system according to claim 1, 2, 3, or 4, wherein the DG data includes a file header, a common header, each data header portion, and a data portion.
  6. 6. The image output system according to claim 5, wherein the file header portion of the DG data has a format of DG data itself depending on a use environment, and indicates a format of data below the flag portion.
  7. 7. The DG data further includes a data size, a creation date and time, a type of data included therein, the number of elements, and the like, and information related to the entire DG data can be identified. The image output system described.
  8. The common header part of the DG data is capable of identifying information related to a drawing mode that varies depending on resolution, paper type, number of colors, data depth, and the like, and also indicates a data offset to a drawing parameter related to each drawing mode. The image output system according to claim 5, claim 6, or claim 7.
  9. Each data header portion of the DG data is capable of identifying a plurality of parameters in the DG data, and includes identification of dither data, error diffusion data, γ data, total amount regulation value, and offset values to these data. The image output system according to claim 5, 6, 7, or 8.
  10. The image output system according to any one of claims 1 to 9, wherein the DG library is a computer program, and is a program that can be written and rewritten on a memory such as a ROM or a RAM.
  11. 11. The image output system according to claim 10, wherein the computer program which is the DG library can be mounted on a memory in each image processing apparatus.
JP2005017340A 2005-01-25 2005-01-25 Image output system Expired - Fee Related JP4527556B2 (en)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1141622A (en) * 1997-07-22 1999-02-12 Ricoh Co Ltd Image processor
JP2000347825A (en) * 1999-06-01 2000-12-15 Canon Inc Method, device, and system for resource management, method and system for downloading, and storage medium
JP2001075758A (en) * 1999-09-02 2001-03-23 Ricoh Co Ltd Host device provided with printer driver and printer system
JP2004157611A (en) * 2002-11-01 2004-06-03 Canon Inc Information processor, and its control method and program

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1141622A (en) * 1997-07-22 1999-02-12 Ricoh Co Ltd Image processor
JP2000347825A (en) * 1999-06-01 2000-12-15 Canon Inc Method, device, and system for resource management, method and system for downloading, and storage medium
JP2001075758A (en) * 1999-09-02 2001-03-23 Ricoh Co Ltd Host device provided with printer driver and printer system
JP2004157611A (en) * 2002-11-01 2004-06-03 Canon Inc Information processor, and its control method and program

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