JP4710895B2 - Image processing apparatus and program - Google Patents

Description

  The present invention relates to an image processing apparatus and a program.

  Conventionally, an image forming apparatus such as a printer or a copying machine, or a control device such as a printer server or a print controller for controlling the image forming apparatus (hereinafter, such an image forming apparatus or a control apparatus is referred to as an image processing apparatus). The received jobs (ie, print data) are accumulated (spooled) in the storage device, and processed one job at a time in the order received. In such an apparatus, the output order of accumulated jobs is also controlled.

  The printer control device disclosed in Patent Document 1 controls the output order of a plurality of print data input from an external device in accordance with print data attribute information such that black and white is given priority over color.

  Patent Document 2 discloses a mechanism for changing the job processing order in an apparatus that accumulates a plurality of jobs and sequentially processes them one at a time. This apparatus displays a list of accumulated jobs, and when the user designates a job to be preferentially processed, the job is preferentially processed.

  An image processing apparatus generally includes a processing module called a raster image processor (abbreviated as RIP) that interprets print data described in PDL (page description language) and generates a raster image. In recent years, an image processing apparatus having a processing module that converts print data into, for example, a PDF (Portable Document Format) format and performs image processing such as color correction is increasing in the pre-RIP stage. The RIP module and the pre-RIP processing module may be implemented in software or in hardware. Some jobs input to such an image processing apparatus require pre-RIP processing, and others do not. The conventional image processing apparatus processes all jobs in the input order regardless of the type of job.

Japanese Patent Laid-Open No. 06-051923 JP 2002-368926 A

  SUMMARY OF THE INVENTION An object of the present invention is to enable an image processing apparatus that performs a plurality of image processes with prescribed order to target data to process the input target data more efficiently than to process them in the order of input. .

The invention according to claim 1 is inputted with a plurality of image processing means capable of operating in parallel in which the order of image processing is defined, and performing image processing on the target data according to the order. One of the acquisition means for acquiring control information corresponding to the image processing means at the processing start stage for the target data from the target data, and the plurality of image processing means based on the control information acquired by the acquisition means comprising a control means for controlling to start processing the target data the input from the image processing unit, and a receiving means for said plurality of image processing means, each receiving designation of whether overtaking possible, the control A first image processing means of the plurality of image processing means, and an image processing means designated as overtaking in the designation accepted by the accepting means; In the group consisting of the next image processing means, the rearmost image processing means before the image processing means at the start of processing corresponding to the control information included in the input target data in the order is the input image processing means. determining an image processing means for starting the processing target data, it is the image processing apparatus you said.
According to a second aspect of the present invention, a plurality of image processing means capable of operating in parallel with a prescribed order of image processing, wherein a plurality of image processing means for performing image processing on the target data according to the order are input. One of the acquisition means for acquiring control information corresponding to the image processing means at the processing start stage for the target data from the target data, and the plurality of image processing means based on the control information acquired by the acquisition means Control means for starting the processing of the input target data from the image processing means, and among the plurality of image processing means, among the image processing means not to be overtaken, the first image processing means in the order Receiving means for accepting designation of the image processing means, wherein the control means is an image processing means before the leading image processing means received by the accepting means. Among these, in the order, the image processing means that starts the processing of the input target data is the last image processing means before the image processing means at the processing start stage corresponding to the control information included in the input target data. An image processing apparatus characterized in that it is determined as means.

The first reference example is the invention according to claim 1 or 2 , wherein each of the plurality of image processing means includes a processing queue, and sequentially processes the target data input to the processing queue. Is sent to the next image processing means in the sequence, and the control means determines the determination as control for starting the processing of the input target data from the determined image processing means. The processing for putting the inputted target data into the processing queue of the image processing means is performed.

The second reference example is the invention according to claim 1 or 2, wherein the control unit is configured to transmit the input target data from an image processing unit at a process start stage indicated by control information included in the input target data. Control is performed to start the process.

According to a third reference example , in the invention according to claim 1 or 2, when the control unit receives an input order priority instruction, the control unit receives the first image processing unit from among the plurality of image processing units. Control is performed to start processing of input target data.

The fourth reference example is a processing status display screen in which display columns for each of the plurality of image processing units in the first reference example are arranged according to the order, and each display column has a corresponding image processing unit. Screen generating means for generating a processing status display screen on which the target data in the processing queue and the target data being processed by the image processing means are displayed.

The fifth reference example is the same as the first reference example , in which priority processing is specified for either target data being processed by each of the plurality of image processing means or target data held by each of the processing queue groups. Each of the plurality of image processing means, when the target data received from the image processing means immediately before the image processing means in the order is designated as the priority processing, , Processing is performed with priority over jobs in the processing queue of the image processing means.

The sixth reference example is the fifth reference example invention, wherein each of the plurality of image processing means includes designation of the priority processing in the target data received from the image processing means immediately before the image processing means in the order. The target data is processed before the other target data in the processing queue is processed as soon as the processing of the target data currently processed by the image processing means is completed. It is characterized by.

The invention according to claim 3 is the invention according to claim 1, characterized in that the plurality of image processing means perform parallel processing.

According to a fourth aspect of the present invention, a computer is inputted with a plurality of image processing means capable of operating in parallel in a prescribed order, and a plurality of image processing means for performing image processing on the target data according to the order. An image processing unit that starts processing of the input target data is determined based on control information included in the target data, and control is performed so as to start processing of the input target data from the determined image processing unit. a control unit, a receiving unit in which the plurality of image processing means receives designation of whether the overtaking can each I program der to function with the control unit, among the plurality of image processing means A first image processing means and a next image processing means of the image processing means designated to be overtakeable in the designation accepted by the accepting means Among these, in the order, the image processing means that starts the processing of the input target data is the last image processing means before the image processing means at the processing start stage corresponding to the control information included in the input target data. determining a unit, Ru program der, characterized in that.
According to a fifth aspect of the present invention, a computer is inputted with a plurality of image processing means capable of operating in parallel in a prescribed order, and a plurality of image processing means for performing image processing on the target data according to the order. An image processing unit that starts processing of the input target data is determined based on control information included in the target data, and control is performed so as to start processing of the input target data from the determined image processing unit. A program for functioning as a control unit and a receiving unit that receives designation of the first image processing unit in the order among the plurality of image processing units that cannot be overtaken. The control means receives the input in the order among the image processing means before the leading image processing means received by the receiving means. It is characterized in that the last image processing means before the image processing means at the processing start stage corresponding to the control information included in the target data is determined as an image processing means for starting the processing of the input target data. It is a program.

According to the first or second aspect of the invention, the processing efficiency can be improved as compared with the case where the input target data is processed from the head image processing means. Further, it is possible to finely set the image processing means for starting the processing of the target data as compared with the case where the present invention is not adopted.

According to the second reference example , the input target data need not be passed through the image processing means prior to the processing start stage corresponding to the target data.

According to the third reference example , the target data can be processed according to the input order.

According to the fourth reference example , it is possible to present in an easy-to-understand manner which image processing apparatus is in the processing stage of the target data group in the image processing apparatus as compared with the case where the present invention is not adopted.

According to the fifth reference example , target data for which priority processing is designated can be processed with priority over target data that is not.

According to the sixth reference example , each image processing unit can process target data for which priority processing is designated without wasting processing of target data currently being processed.

According to the invention which concerns on Claim 4 or 5 , processing efficiency can be improved compared with the case where this invention is not employ | adopted. Further, it is possible to finely set the image processing means for starting the processing of the target data as compared with the case where the present invention is not adopted.

  With reference to FIG. 1, an exemplary configuration of a printing system according to the present embodiment will be described. The exemplary system includes a client PC (personal computer) 100 and a print server 200 connected via a network 150 such as a LAN (local area network). A printer 400 is connected to the print server 200 via a data communication path such as a LAN or a communication cable. The client PC 100 generates print instruction data (referred to as a job) in response to a user operation and transmits it to the print server 200. The print server 200 performs control for causing the printer 400 to print the job received from the client PC 100. Although only one client PC 100 is shown in the figure, one print server 200 may accept jobs from a plurality of client PCs 100.

  More specifically, in the client PC 100, for example, when the user gives a print instruction to a file opened by the application 110, the printer driver 120 generates a job. For example, as shown in FIG. 2, the job includes control data 510 representing print attributes such as a paper size and the number of copies, and print data 520 describing an image to be printed in PDL (page description language). The control data 510 in this example includes information on the job type 512, which will be described in detail later. The generated job is transmitted to the print server 200 via the network I / F (interface) 130.

  A job transmitted from the client PC 100 is received by the job receiving unit 220 via the network I / F 210 of the print server 200. The received job is stored in an HDD (Hard Disk Drive) 240. The job control unit 230 controls the execution order of the received job group. The job control unit 230 basically controls the received job group to be executed in the order of reception using a FIFO (first-in first-out) method. Further, the job control unit 230 deletes a job waiting for processing or changes the execution order of jobs waiting for processing in accordance with an instruction from the client PC 100. The job control unit 230 assigns a unique job ID (identification information) to each received job, and manages these jobs using the job ID. Such a function of the job control unit 230 is also provided by a conventional print server, and further description thereof is omitted.

  An image processing unit 300 in the print server 200 is a unit that generates image data to be provided to the printer 400 based on print data 520 of a job. A unit that interprets print data 520 described in PDL and generates a raster image is conventionally known as a RIP (Raster Image Processor). The image processing unit 300 in this example includes one or more image processing functions in addition to such a RIP function. That is, the image processing unit 300 has a plurality of image processing functions. Examples of image processing functions other than RIP include a PDF conversion function that converts print data 520 into image data in PDF format, and a PDF image processing function that performs image processing such as color correction on PDF image data. . A serial processing order is defined for the plurality of image processing functions. According to this order, the job is sequentially transferred and processed from the image processing function to the next image processing function. In other words, it can be said that the image processing unit 300 includes a series of a plurality of processing steps (that is, an image processing function).

  Here, not all jobs input to the print server 200 need all the image processing functions in the image processing unit 300. For example, there are some jobs that are converted to PDF format by the PDF conversion function, processed by the PDF image processing function, and then converted to a raster image by the RIP function. If the job is simply processed by the RIP function, the raster image is simply not processed by the PDF format. Some jobs are converted to In the conventional print server, jobs having different image processing functions as described above are sequentially processed by placing them in the same queue (queue), so that the subsequent job waits until the previous job is processed. For example, it is assumed that there is a situation in which the job A input first is processed by the PDF conversion function and the subsequent PDF image processing function and RIP function are not used. In this situation, when job B requiring only the RIP function is input, the processing order of job B is after job A in the conventional server, and the RIP processing of job B ends the RIP processing of job A. Wait until you do. On the other hand, the image processing unit 300 in this example enables each image processing function to operate in parallel, and assigns a job to each image processing function according to a required image processing function, so that an available image processing function is effective. Make it available. Further details of the image processing unit 300 will be described later.

  The process analysis unit 250 performs analysis processing for such job distribution. That is, the process analysis unit 250 reads the job type 512 in the job control data 510 and determines the processing stage (image processing function) from which the job processing should be started based on the job type 512. The process analysis unit 250 has, for example, determination information (see FIG. 3) in which a processing stage (“start stage”) at which processing of a job of the job type is to be started is registered for each job type. The above-described determination is performed using. When the determination information of FIG. 3 is used, if the job type of the received job is “3”, the start stage of the job is determined as “RIP”. The determined start stage information is transferred to the image processing unit 300 in association with the job.

  Note that the information on the job type 512 in the job is created by the printer driver 120 of the client PC 100. For example, the printer driver 120 may accept a print mode selection from the user and determine the job type according to the selection. For example, when there is a mode for performing PDF image processing (subsequent RIP processing) and a mode for performing RIP processing without performing PDF image processing, the former corresponds to the job type “1” in FIG. 3 and the latter corresponds to the job type. Corresponds to “3”. The printer driver 120 may consider the data format of the data to be printed when determining the job type. For example, when the user instructs printing of a PDF file and selects a mode for performing PDF image processing as the print mode, the job type is “2”. When the user instructs printing of a raster image that has undergone RIP processing, the job type is “4”.

  In FIG. 3, the job type is represented by an integer, but this is merely a convenient example. Of course, an identification name may be assigned to each job type from the viewpoint of the user. Further, the concept of “job type” is merely a convenience. Any information associated with the job start stage can be used instead of the “job type”.

  Returning to FIG. 1 again, the image data transmission unit 260 transmits the image data for printing output from the image processing unit 300 to the printer 400 via the network I / F 270. The printer 400 prints the image data on a sheet.

  In the image processing unit 300 as described above, when sorting according to job type is performed, the processing efficiency is good, but the job execution order changes from the job input order. On the other hand, there may be a case where it is desired to process jobs in the order of input as user needs. Therefore, several operation modes may be provided in the image processing unit 300 so that the user can select an operation mode. The operation mode includes a mode that prioritizes processing efficiency (referred to as “efficiency priority mode”), a mode that executes jobs in the order of input (referred to as “order priority mode”), and the like. Detailed examples of the individual operation modes will be described later.

  The mode management unit 280 manages the operation mode of such an image processing unit 300. The user operates the input device 290 to select an operation mode. The input device 290 is a keyboard or a liquid crystal touch panel. The user calls an operation mode selection screen and selects a desired one from the modes displayed on the screen. By applying protection such as password protection, only a limited user such as a system administrator may select the operation mode. Of course, the operation mode may be selected by accessing the print server 200 from a PC on the network 150.

  Next, an example of the internal configuration of the image processing unit 300 will be described with reference to FIG. The image processing unit 300 in this example includes a PDF conversion module 310A, a PDF image processing module 310B, and a RIP module 310C as modules for realizing an image processing function. In the following, when the matters common to the three modules are described, the three modules 310 </ b> A to 310 </ b> C are collectively referred to as “module 310”. The order of these three modules 310 is defined. That is, the job processed by the PDF conversion module 310A is then processed by the PDF image processing module 310B, then processed by the RIP module 310C, and then passed to the image data transmission unit 260.

  The PDF conversion module 310A converts the print data 520 of the job into an image data file in the PDF format. The PDF image processing module 310B performs predetermined image processing such as color correction on the image data in PDF format. The RIP module 310C converts print data into print image data in a raster format that can be handled by the printer 400. For example, the RIP module 310C may have a function of converting print data in PDL format into print image data and a function of converting image data in PDF format into print image data. The process performed by each module 310 is a conventionally known process, and a conventionally known module may be used as each module 310.

  The image processing unit 300 includes processing queues 320A, 320B, and 320C corresponding to the modules 310A, 310B, and 310C. For example, the job waiting queue 320A holds jobs waiting for processing by the corresponding module 310A. In addition, the image processing unit 300 includes a processing queue 320D that holds jobs waiting for processing by the image data transmission unit 260. This processing queue 320D holds jobs after RIP processing. When a common matter is described, the process queues 320A to 320D are collectively referred to as “process queues 320”. The process queue 320 is a FIFO queue, and a newly submitted job is added to the end of the process queue 320.

  “Processing” queues 325A to 325D are provided at the heads of the processing queues 320A to 320D. When the common matters are described, the in-process queues 325A to 325D are collectively referred to as “in-process queue 325”. A job currently being processed by the corresponding module 310 enters the processing queue 325. When module 310 finishes processing a job, the job is removed from the processing queue 325 and sent to the next processing stage.

  In this example, the process waiting queue 320 of each process stage can be validated or invalidated. The image processing unit 300 includes queue management information 340 (see FIG. 4) indicating whether the process waiting queue 320 at each processing stage is valid or invalid. FIG. 4 shows the queue management information 340 in which all of the processing queues 320A to 320D are set to be valid, but this is only an example. The queue management information 340 is created and updated by the mode management unit 280, for example.

  Jobs can be submitted to the valid processing queue 320 from outside (that is, the immediately preceding processing stage or submission control unit 330). Accordingly, when the processing queue 320 at a certain processing stage is valid, the job sent from the immediately preceding processing stage once enters the processing queue 320 and, when the turn comes, is sent to the processing queue 325 to deal with it. To be processed by the module 310. On the other hand, the invalid processing queue 320 does not accept an external job. Therefore, when the process waiting queue 320 at a certain process stage is invalid, the process stage accepts jobs from the previous stage only when the in-process queue 325 is empty.

  For such job execution control, execution control units 315A to 315C (collectively referred to as execution control unit 315) are provided for each processing stage. Each execution control part 315A-C performs the procedure illustrated in FIGS.

  First, as illustrated in FIG. 5, the execution control unit 315 checks whether or not the corresponding in-process queue 325 is empty (S11). If the in-process queue 325 is empty, the execution control unit 315 performs steps S12 to S16 in order to accept the next job to be processed in the in-process queue 325. The next job is accepted from the processing queue 320 if the processing queue 320 is valid, and from the immediately preceding processing stage if it is invalid. Therefore, the execution control unit 315 determines whether the corresponding process waiting queue 320 is valid or invalid based on the queue management information 340 (S12). If invalid, step S11 is repeated again after a predetermined time has elapsed. Steps S11 and S12 are repeated until a job is submitted to the in-processing queue 325 from the immediately preceding processing stage.

  When it is determined in step S12 that the corresponding processing queue 320 is valid, the execution control unit 315 checks whether there is a job in the processing queue 320 (S13). The process of step S13 is repeated. If there is a job in the process waiting queue 320, the first job among them is taken out (S14). Then, it is determined whether or not the processing stage of the execution control unit 315 is a stage after the start stage of the extracted job (S15). Here, the start stage of the extracted job is obtained from the job type 512 of the job (see FIG. 2). For example, when the process analysis unit 250 determines the start stage of the job, the value of the start stage may be recorded as the job attribute.

  As a result of the determination in step S15, if the processing stage of the execution control unit 315 is a stage after the start stage of the extracted job, the execution control unit 315 puts the job in the corresponding in-process queue 325 (S16). Return to step S11. At this time, since there is a job in the processing queue 325, the execution control unit 315 proceeds to the processing procedure shown in FIG. 6 as a result of the determination in step S11.

  In other words, in the procedure of FIG. 6, the execution control unit 315 requests the corresponding module 310 to process the job in the processing queue 325 (S21), and receives a notification from the module 310 that reports the completion of processing. Wait (S22). When the processing completion notification is received, the execution control unit 315 executes processing for sending the job in the corresponding processing queue 325 to the next processing stage (S23: details will be described later with reference to FIG. 7). To do. When the job is sent to the next processing stage, the execution control unit 315 deletes the job from the processing queue 325 (S24) and returns to step S11 (see FIG. 5).

  On the other hand, as a result of the determination in step S15, if the processing stage of the execution control unit 315 is a stage before the start stage of the extracted job, the job does not need to be processed in this processing stage. Therefore, in this case, the execution control unit 315 executes the process (S17) for sending the job to the next processing stage without requesting the corresponding module 310 to process the job, and then the step Returning to S13, the next job in the processing queue 320 is checked.

  Details of the job sending process performed in steps S17 and S23 will be described with reference to FIG. In the procedure of FIG. 7, the execution control unit 315 determines whether or not the process waiting queue 320 at the next processing stage is valid based on the queue management information 340 (S31). It puts in the next processing queue 320 (S32). On the other hand, if the next-stage processing queue 320 is invalid, a job cannot be submitted to the queue 320, so the execution control unit 315 determines whether or not the next-stage processing queue 325 is empty ( S33). If the result of this determination is negative, that is, if there is a job in the next processing queue 325, the job is still being processed, so the execution control unit 315 finishes processing the job and the processing queue 325 is empty. (S33 is repeated). As a result of the determination in step S33, if it is found that the next processing queue 320 is empty, the execution control unit 315 puts the job to be sent into the next processing queue 325 (S34). When a job is input to the next-stage processing queue 325 in this way, the next-stage execution control unit 315 detects this in step S11, and processes the job according to the procedure shown in FIG. become.

  The job execution control procedure shown in FIGS. 5 to 7 is merely an example. Any procedure may be used as long as the same control can be realized. For example, in the examples of FIGS. 5 to 7, the control is performed for each processing stage, but instead, the status of the processing waiting queue 320 and the processing queue 325 in all the processing stages is monitored, Of course, it is also possible to adopt overall control such as job transfer at.

  Note that the processing procedure of the image data transmission unit 260 may be as follows, for example. That is, the image data transmission unit 260 takes out the first job from the processing queue 320D and places it in the processing queue 325D, and requests the printer 400 to print the job. That is, the raster image data of the job is transmitted to the printer 400. Thereafter, the printer 400 waits for a print completion notification for the job. When the print completion notification is received, the job is deleted from the processing queue 325D, the first job is taken out from the processing queue 320D, put into the processing queue 325, and the printer 400 is requested to print the job.

  Returning to the description of FIG. 4, the input control unit 330 performs control to distribute a job newly input to the image processing unit 300 as a processing target to the processing queues 320 </ b> A to 320 </ b> D in any processing stage. In this control, the submission control unit 330 refers to the queue management information 340 so as not to submit a job to the invalid processing waiting queue 320.

  In the example of the queue management information 340 shown in FIG. 4, all of the processing queues 320A to 320D are valid. In this case, the submission control unit 330 may submit the input job to the processing waiting queue 320 at the start stage (see, for example, FIG. 3) corresponding to the job type. On the other hand, when the processing queue 320 at the start stage corresponding to the input job type is invalid, the submission control unit 330 cannot submit the job to the queue 320. In this case, the submission control unit 330 submits the job to the last one that is valid and is among the processing queues 320 before the processing queue 320 at the start stage.

  An example of a processing procedure for realizing the control of the input control unit 330 will be described with reference to FIG. The procedure in FIG. 8 is executed when a job is input from the client PC 100, for example.

  In such a case, first, the process analysis unit 250 reads the job type 512 from the input job control data 510 (S41), and the start information corresponding to the job type 512 is, for example, the determination information illustrated in FIG. Based on the above, a determination is made (S42). The process analysis unit 250 passes the determination result to the input control unit 330 in association with the job ID of the job. The input control unit 330 identifies the processing stage with the last order before the start stage among the processing stages indicated as “valid” in the queue management information 340 (see FIG. 4) (S43). Then, the job is submitted to the processing waiting queue 320 at the specified processing stage (S44).

  The procedure in FIG. 8 described above can be applied to both cases where all the processing stages are “valid” and where there are one or more “invalid” processing stages.

  If a job is input to a certain waiting queue 320 from the input control unit 330 and the execution control unit 315 at the previous stage at the same time, the job with the earlier reception time is processed earlier. It is sufficient to submit these jobs to the queue 320 as shown in FIG.

  In the above processing, for example, the process analysis unit 250 may register the information of the start stage determined in step S32 as one item of management information of the job input to the processing queue 320. An example of such job management information is shown in FIG. In this example, the job management information includes the job ID 602 assigned by the job control unit 230 to the job, the reception time 604 when the job reception unit 220 received the job, and the start stage 606 determined by the process analysis unit 250. including. In addition to this, the job management information may include other information such as job control data 510 and print data 520. When including information of the start stage in the job management information, the execution control unit 315 may refer to the attribute value of the start stage of the job in the process of step S15 in the procedure of FIG.

  The procedure in FIG. 8 is for a job received, but the same processing may be performed when the user instructs printing for a job stored in the HDD 240 after reception. In this case, the reception time 604 in the job management information may be the time when the print instruction is received. Further, if the value of the start stage determined at the time of reception is stored in the HDD 240 in association with the job data, step S42 (determination of the start stage) can be omitted when printing of the stored job is instructed. .

  Note that not the job itself received from the client PC 100 but the print image data of the processing result of the image processing unit 300 for the job may be stored in the HDD 240. In this case, the print image data is stored in association with the value of “data transmission” as the start stage, and when the print image data is instructed to be printed, the stored start stage value is read out. You may do it. Similarly, when the PDF data generated by the PDF conversion module 310A is stored in the HDD 240, “PDF image processing” is started as the start stage, and when the PDF data of the image processing result by the PDF image processing module 310B is stored. “RIP” may be stored in association with each other.

  The example of the internal configuration of the image processing unit 300 has been described above with reference to FIG. The image processing unit 300 including the three modules 310A to 310C illustrated in FIG. 4 is merely an example. The control method in this example is applicable to the print server 200 generally including two or more image processing modules arranged in series, and the type of each image processing module is not particularly limited.

  Next, an example of operation mode management of the image processing unit 300 by the mode management unit 280 will be described. In this example, the image processing unit 300 has three modes of “efficiency priority”, “order priority”, and “custom”. The efficiency priority mode is a mode in which an input job is put in the process waiting queue 320 at the start stage according to the type so that the job is processed promptly. In the efficiency priority mode, the process waiting queue 320 of all the process stages is validated. The order priority mode is a mode in which jobs are processed in the order in which the print server 200 receives the jobs (that is, in order of reception time). When a print instruction is issued for a job stored in the HDD 240, the time of the instruction is set as the reception time. In the order priority mode, only the process waiting queue 320 in the first process stage is validated. The custom mode is a mode in which the user can freely specify the validity / invalidity of each process waiting queue 320.

  The mode management unit 280 provides a user with a mode selection UI (user interface) screen, and sets the queue management information 340 according to the mode specified by the user using the screen. An example of the processing procedure of the mode management unit 280 is shown in FIG.

  In the procedure of FIG. 10, when the mode management unit 280 receives a mode designation from the user using the UI screen (S51), the designated mode is the current mode (that is, the mode before the designated mode). It is determined whether they are the same (S52). If they are the same, the mode management unit 280 ends the process without changing the queue management information 340.

  When the designated mode is different from the current mode (this is also the case when the mode is designated in a state where the mode is not designated), the mode management unit 280 determines that the designated mode is efficiency priority, order priority, And custom (S53). If the designated mode is efficiency-prioritized, the mode management unit 280 sets the values of all the processing steps in the queue management information 340 to “valid” (S54). Therefore, in the efficiency priority mode, the submission control unit 330 submits the job to the process waiting queue 320 at the processing stage corresponding to the start stage of the input job.

  If the designated mode is order priority, the value of only the first processing stage (“PDF conversion” in the example of FIG. 4) in the queue management information 340 is set to “valid”, and the values of other processing stages are set. Is set to “invalid” (S55). Therefore, in the order priority mode, the submission control unit 330 submits the job to the processing waiting queue 320 in the first processing stage regardless of the start stage of the input job. This control is the same as the conventional job input control.

  When the designated mode is the custom mode, the mode management unit 280 provides a setting screen for custom settings, and accepts settings from the user via the setting screen. In this example, as the setting screen, for each processing stage, a screen for setting whether or not the job can “pass” the processing stage is provided, and the setting is accepted from the user (S56). When the user designates whether overtaking is possible for each processing stage using such a setting screen, the mode management unit 280 sets the value of the first processing stage in the series of processing stages in the queue management information 340 and the overtaking. The value of the next processing step after each processing step designated as possible is set to “valid”, and the rest are set to “invalid” (S57). In this way, when a certain processing stage is set to be overtaken, the submission control unit 330 can cause the job to be passed to the next processing stage by overtaking that processing stage (of course, that (Only when the job start stage is after the "next processing stage").

  In the custom mode, instead of accepting the specification of whether or not to pass each processing step as described above, it is possible to accept the specification of which processing step can be passed from the first processing step in the series of processing steps. Good. In this example, the process from the first process stage to the process stage designated by the user can be overtaken, and the stage after the stage designated by the user cannot be overtaken. Therefore, in this case, the processing waiting queue 320 from the first processing stage to the next stage of the processing stage designated by the user is set to “valid”, and the processing waiting queue 320 at the subsequent stage is set to “invalid”. Will be.

  Note that, in the custom mode, instead of allowing the user to set whether or not the processing stage can be overtaken, the user may set the validity / invalidity of the processing waiting queue 320 in the processing stage.

  Next, with reference to FIGS. 11 to 14, how an input job group is processed in the image processing unit 300 will be described with a specific example. Here, in the example of FIG. 4, it is assumed that in the custom mode, only “PDF conversion” of the four processing stages is set to be overtaken, and the rest is set to be overtaken. In this case, the processing queues 320A and 320B for “PDF conversion” and the next “PDF image processing” are valid, and the remaining processing queues 320C and 320D for “RIP” and “image data transmission” are invalid. . Consider a case where six jobs “Job1” to “Job6” illustrated in FIG. 11 are input in this order to the image processing unit 300 having such settings. FIG. 11 shows start stages corresponding to the job types of the jobs “Job1” to “Job6”.

  First, the first input stage of Job1 is “Start PDF” and “Process PDF” processing queue 320A is valid, so Job1 is input to the processing queue 320A by the input controller 330. Then, the process moves to the in-process queue 325A and is processed by the PDF conversion module 310A. The state (A) in the upper part of FIG. 12 is the state of the queue group of the image processing unit 300 at this time. Then, assume that the next Job2 is input before the PDF conversion of Job1 is completed. The start stage of Job2 is “RIP”, but the “RIP” processing queue 320C is invalid, so Job2 is put in the last valid “PDF image processing” processing queue 320B and is being processed. Move to queue 325B. The state (B) in the lower part of FIG. 12 is the state of the queue group of the image processing unit 300 at this time. Here, since the start stage of Job2 is RIP processing, PDF image processing is unnecessary, and the in-process queue 325C of the next RIP processing is empty. Therefore, Job2 that has entered the in-process queue 325B is immediately sent to the in-process queue 325C and is processed by the RIP module 310C.

  After that, when Job1 finishes converting to PDF and proceeds to PDF image processing, and when Job2's RIP processing does not end, when Job3 whose PDF image processing starts is input, Job3 is put into the processing queue 320B, Wait until the PDF image processing for Job1 is completed (state (C) in the upper part of FIG. 13). Thereafter, when Job2 finishes the RIP process and proceeds to the image data transmission stage, and Job1 finishes the PDF image process and proceeds to the RIP process stage, Job3 proceeds to the processing queue 325B and receives the PDF image process. At this time, if Job4 whose start stage is image data transmission is input, Job4 is placed in the last valid processing queue 320B before image data transmission (state (D) in the lower part of FIG. 13).

  After this, even if the RIP processing for Job1 is completed, if transmission of the image data of Job2 to the printer 400 is not completed, Job1 cannot proceed to the image data transmission stage, and Job3 cannot proceed to the RIP stage due to this influence. . If Job5 is input at this time, Job5 is input to the PDF processing waiting queue 320A which is the start stage. At this point, the processing queue 325A is empty, so Job5 is immediately processed by the PDF module 310 (state (E) in the upper part of FIG. 14). Thereafter, when the image data transmission of Job2 to the printer 400 is completed, Job1 proceeds to image data transmission, Job3 proceeds to RIP, and Job4 moves to the processing queue 325B. Since Job4 starts with image data transmission (that is, Job4 is already a raster image), neither PDF image processing nor RIP processing is required, but it will wait in the processing queue 325B until RIP of Job3 is completed. . At this time, when Job6 whose start stage is RIP is input, the state of the queue group becomes the state (F) in the lower part of FIG.

  As described above, the case of the custom mode has been described as an example. However, in the case of the efficiency priority mode, the point in which the input job is input to the processing waiting queue 320 at the start stage according to the type of the job is the case of the custom mode. Those skilled in the art will be able to easily understand from the above description because they are only different. Further, the flow of job execution in the order priority mode is the same as in the prior art, so no explanation will be required.

  Next, an example of a job management screen provided by the job control unit 230 will be described with reference to FIGS. 15 and 16. FIG. 15 shows an example of a job management screen in the efficiency priority mode. The exemplary job management screen includes a first area 710 indicating the status of a job being processed or waiting to be processed, and a second area indicating information about a retained job remaining in the HDD 240 in accordance with a user instruction after the processing is completed 720 is displayed.

  In the first area 710, jobs in any of the processing queues 320A to 320D or the processing queues 325A to 325D are arranged and displayed from top to bottom in the order of output from the print server 200. In the first area 710, the job name column 711 shows the job name, and the reception time column 712 shows the job reception time. In the first area 710, job display fields 713 to 716 for the respective processing stages of PDF conversion, PDF image processing, RIP, and data transmission are arranged from left to right in the order of the processing stages. Each job displayed in the job name column 711 is displayed in the job display column 713, 714, 715 or 716 at the processing stage where the job currently exists. In the job display fields 713 to 716 for each processing stage, the jobs in the processing stage are arranged from top to bottom according to the processing order. The job in the processing queue 325 is displayed as “processing” and the progress (for example, percentage) of the processing, and the job in the processing queue 320 is “processing waiting”. Is displayed. In this job management screen, as the processing of a job group progresses, a certain job climbs up one by one in the job display field at a certain processing stage, and when the processing at that processing stage ends, the next processing stage, that is, one It will move to the end of the job display field on the right.

  In the second area 720, for each held job, the job name, reception time, data size, owner (user who sent the job), and start stage (this is determined when the job is received). And comments entered by the user (owner or administrator, etc.) are displayed. The user can select a held job in the second area 720 and instruct printing.

  FIG. 16 shows an example of a job management screen in the case where the conversion to PDF is set to be overtaken in the custom mode and the other processing stages are set to be overtaken. In the example of FIG. 16, the job display field 717 in the first area 710 displays jobs in three consecutive processing stages of PDF image processing, RIP, and data transmission collectively in FIG. 15 (efficiency priority mode). Not the case. In the job display field 717, the jobs being processed at each stage of data transmission, RIP, and PDF image processing are arranged in the order from top to bottom, and below that, the jobs waiting to be processed are processed in the order in which they are processed. It is arranged. These jobs waiting to be processed are jobs held in the PDF image processing queue 320B. The job displayed in the job display field 717 moves upward as the processing of the job group proceeds. The job display field 717 displays the start stage of each job waiting to be processed. For example, the fourth job from the top is displayed as “data transmission waiting”, which indicates that the start stage of the job is “image data transmission”.

  In this way, in the example of FIG. 16, job display fields 713 and 717 are provided corresponding to each processing stage in which the process waiting queue 320 is valid (in the example of FIG. 16, PDF conversion and PDF image processing). In this respect, FIG. 15 is the same. In the order priority mode, all types of jobs are input to the PDF processing waiting queue 320A, which is the first processing stage. Therefore, in the first area of the job management screen in this case, 1 corresponding to the queue 320A is displayed. There should be only one job display field. The job arrangement order in the job display field may be the same as that of the job display field 717 in FIG.

  Even in the custom mode and the order priority mode, job display fields 713 to 716 may be provided for each processing stage, as in FIG. In this case, a job waiting for processing is not displayed in the job display column in the processing stage where the processing waiting queue 320 is invalid, but the other processing is the same as in FIG.

  Next, an example of the transient control of the group of processing waiting queues 320 in the image processing unit 300 when an instruction to change the operation mode of the image control unit 300 is given will be described with reference to FIG.

  As shown in FIG. 17, in this transient control, when a mode change is instructed by the user to the mode management unit 280, first, the image processing unit 300 causes the queue for which the processing waiting queue 320 is invalid due to the mode change. It is determined whether or not increases (S61). In this example, it is assumed that in the custom mode, designation of which process stage can be overtaken from the first process stage in a series of process stages is accepted. If the last processing stage that allows overtaking is earlier than before the mode change, the number of invalid queues increases due to the mode change.

  If the determination result in step S61 is affirmative (Yes), the image processing unit 300 is newly invalidated as a result of the mode change (that is, valid before the mode change). Control is performed so that jobs are not submitted from the processing stage (S62). If jobs remain in the respective queues 320, the remaining modules are sequentially processed by the corresponding modules 310 (S63). When each of the queues 320 becomes empty, the image processing unit 300 invalidates each of the queues 320 (S64), ends the transient control, and shifts to the normal control described above (see FIGS. 5 to 7).

  When the mode is changed, the number of invalid processing queues 320 is changed. Therefore, when the determination result in step S61 is negative (No), the invalid processing queues 320 are reduced and the invalid processing queues 320 are valid. As a result, the number of waiting queues 320 increases. In this case, the image processing unit 300 newly sets each job in the last queue 320 among the processing waiting queues 320 that are valid before the mode change to a new valid after the mode change according to the start stage of each job. (S65). In this distribution process, similar to steps S43 and S44 illustrated in FIG. 8, the job may be submitted to the last valid processing queue 320 before the job start stage. The arrangement order of the distributed jobs in the distribution destination queue 320 may be the order in which the reception times of the jobs are earlier. After the distribution is completed, the image processing unit 300 enables the queues 320 to be newly enabled (S66), ends the transient control, and returns to the normal control described above (see FIGS. 5 to 7). Transition.

  Hereinafter, a specific example of such transient control will be described. For example, when the mode of the image processing unit 300 is changed from the custom mode in which the PDF processing and PDF image processing processing queue 320 illustrated in FIG. 12 is valid to the order priority mode, the processing queue 320B of PDF image processing is changed. It will be changed to invalid. If no job remains in the processing queue 320B at the time of the mode change, the queue 320B is immediately invalidated. On the other hand, if jobs remain in the queue 320B at the time of the mode change, the remaining jobs are processed by the PDF processing module 310B, and then the queue 320B is invalidated. The above example is an example in which the number of invalid processing queues 320 increases due to mode change.

  In addition, when the mode of the image processing unit 300 is changed from the order priority mode to the custom mode in which the processing queue 320 for PDF conversion and PDF image processing is valid, the processing queue 320B for PDF image processing is changed from invalid to valid. Will be. If there are jobs in the processing queue 320A (PDF conversion), which is the last effective processing queue before the mode change, they are newly enabled with the queue 320A according to each start stage. It is distributed to the processing waiting queue 320B. For example, if there is one job each having “PDF image processing”, “RIP”, “image data transmission”, and “PDF conversion” in the process waiting queue 320A, the start stage is “PDF image”. Jobs that are “processing”, “RIP”, or “image data transmission” are distributed to the processing queue 320B, and jobs whose start stage is “PDF conversion” remain in the processing queue 320A. Then, after this processing is completed, the processing waiting queue 320B is validated and accepts job submission from the submission control unit 330 and the immediately preceding processing stage.

  In the example described above, the job waiting queue 320 set to be invalid is prevented from being submitted from the submission control unit 330 or from the immediately preceding processing stage. However, such control is only an example. As a modification, the processing waiting queue 320 set to invalid may not accept a job from the input control unit 330, but may accept a job sent from the immediately preceding processing stage. In this modification, the execution control unit 315 may execute the procedure illustrated in FIG. 18 as the job sending process instead of the procedure illustrated in FIG. That is, in this example, the execution control unit 315 waits for a job (S23) for which processing in the corresponding module 310 has been completed or a job (S17) that does not require processing in that module for processing in the next processing stage. What is necessary is just to put into the queue 320. For the control other than the job sending process illustrated in FIG. 18, the same procedure as that illustrated in FIGS. 5, 6, 8, and 10 may be used. In this modification, a job that has been processed in each processing stage is immediately sent to the processing waiting queue 320 in the next processing stage without waiting for completion of the job processing in the next processing stage.

  For example, when the queue group of the image processing unit 300 is in the state (D) of FIG. 13 and the RIP processing of Job1 is completed before the transmission of Job2 to the printer 400 is completed, in the procedure of FIG. Cannot proceed to the image data transmission stage, and therefore remains in the RIP processing queue 325C. Therefore, even if the PDF image processing of Job3 is completed at that time, Job3 cannot proceed to the RIP stage. On the other hand, in this modified example, Job2 proceeds to the image data transmission processing queue 320, and Job3 proceeds to the RIP processing queue 325 that is free as a result.

  Note that the job management screen in this modified example may have job display fields 713 to 716 for all processing stages, as illustrated in FIG.

  In the above example, each processing queue is switched between valid and invalid according to the operation mode designated by the user, but this is only an example. Alternatively, a user interface may be employed in which such an operation mode is not provided, and the user directly designates whether or not each process stage can be overtaken (or enabled or disabled for each process queue 320). This corresponds to the case where all are handled as the custom mode.

  The above example is an example in which the module 310 in one processing stage processes only one job at a time, but this is only an example. When the module 310 can process n jobs (n is 2 or more) at a time in parallel, n jobs are placed in the corresponding in-process queue 325, and the module 310 is set to 1 in the in-process queue 325. The above jobs may be processed in parallel. In this case, the job for which the processing of the module 310 has been completed may be sent to the next processing stage, and the next job may be received in the vacant processing queue 325.

  In the above example, designation of a job to be preferentially processed may be accepted. In this case, the job specified as the priority processing target includes information indicating that it is the priority processing target in the job management information. If there is a job to be prioritized in the corresponding processing queue 320, the execution control unit 315 at each processing stage takes out the job with priority, causes the corresponding module 310 to process the job, and sends it to the next processing stage. (If processing in the module is not necessary, it can be simply sent to the next processing stage). In addition, when the execution control unit 315 receives a priority processing target job from the immediately preceding processing stage, as soon as the job processing in the corresponding module 310 is completed, the execution control unit 315 precedes the job in the corresponding processing waiting queue 320. The module 310 may execute the priority processing target job.

  The print server 200 exemplified above is realized, for example, by causing a general-purpose computer to execute a program representing the processing of each functional module described above. Here, for example, as shown in FIG. 19, the computer includes a microprocessor such as a CPU 1000, a memory (primary storage) such as a random access memory (RAM) 1002 and a read only memory (ROM) 1004, an HDD ( HDD controller 1008 that controls (hard disk drive) 1006, various I / O (input / output) interfaces 1010, network interface 1012 that performs control for connection to a network such as a local area network, etc. are connected via bus 1014, for example. Circuit configuration. In addition, for example, a disk drive 1016 for reading from and / or writing to a portable disk recording medium such as a CD or a DVD, a portable memory of various standards such as a flash memory via the I / O interface 1010 is connected to the bus 1014. A memory reader / writer 1018 for reading from and / or writing to the nonvolatile recording medium may be connected. A program in which the processing content of each functional module exemplified above is described is stored in a fixed storage device such as a hard disk drive via a recording medium such as a CD or DVD or via a communication means such as a network, and a VPN router Installed on. The program stored in the fixed storage device is read into the RAM 1002 and executed by a microprocessor such as the CPU 1000, whereby the functional module group exemplified above is realized. Some or all of these functional module groups are used as hardware circuits such as dedicated LSI (Large Scale Integration), ASIC (Application Specific Integrated Circuit), or FPGA (Field Programmable Gate Array). It may be configured.

1 is a diagram illustrating an example of a printing system. It is a figure which shows an example of the data content of a job. It is a figure which shows an example of the determination information for determining the start step corresponding to a job type. It is a figure which shows an example of a structure of an image process part. It is a flowchart which shows a part of example of the process sequence which an execution control part performs. It is a flowchart which shows another part of an example of the process sequence which an execution control part performs. It is a flowchart which shows the remaining part of an example of the process sequence which an execution control part performs. It is a flowchart which shows an example of the process sequence of an insertion control part. It is a figure which shows an example of the management information of a job. It is a flowchart which shows an example of the process sequence of a mode management part. FIG. 6 is a diagram illustrating an example of a job group that is sequentially input to the print server 200. It is a figure which shows the example of the step change of the state of the process waiting queue of each process step when a job group is input in custom mode. It is a figure which shows the example of the step change of the state of the process waiting queue of each process step when a job group is input in custom mode. It is a figure which shows the example of the step change of the state of the process waiting queue of each process step when a job group is input in custom mode. FIG. 10 is a diagram illustrating an example of a job management screen in an efficiency priority mode. It is a figure which shows the example of the job management screen in custom mode. It is a flowchart which shows an example of the procedure of the transient control of a process queue group when the change of the operation mode of an image control part is instruct | indicated. It is a flowchart which shows an example of the procedure of the job sending process of the execution control part in a modification. It is a figure which shows an example of the hardware constitutions of a computer.

Explanation of symbols

  100 client PC, 110 application, 120 printer driver, 130 network I / F, 150 network, 200 print server, 210 network I / F, 220 job receiving unit, 230 job control unit, 240 HDD, 250 process analysis unit, 260 image Data transmission unit, 270 network I / F, 280 mode management unit, 290 input device, 300 image processing unit, 310A PDF conversion module, 310B PDF image processing module, 310C RIP module, 315A to 315C execution control unit, 320A to 320D processing Wait queue, 325A-325D Processing queue.

Claims (5)

A plurality of image processing means capable of parallel operation in which the order of image processing is defined, and a plurality of image processing means for performing image processing on the target data according to the order;
Acquisition means for acquiring control information corresponding to the image processing means at the start of processing for the target data from the input target data;
Control means for controlling to start processing of the input target data from any one of the plurality of image processing means based on the control information obtained by the obtaining means;
Accepting means for accepting designation of whether each of the plurality of image processing means can be overtaken;
Equipped with a,
The control means includes a head image processing means of the plurality of image processing means, and a group consisting of an image processing means next to the image processing means designated as overtaking in the designation accepted by the accepting means. Among these, in the order, the image processing means that is the backmost image processing means before the image processing means at the processing start stage corresponding to the control information included in the input target data is the image that starts the processing of the input target data. To determine the processing means,
The image processing apparatus you wherein a. A plurality of image processing means capable of parallel operation in which the order of image processing is defined, and a plurality of image processing means for performing image processing on the target data according to the order;
Acquisition means for acquiring control information corresponding to the image processing means at the start of processing for the target data from the input target data;
Control means for controlling to start processing of the input target data from any one of the plurality of image processing means based on the control information obtained by the obtaining means;
An accepting unit that accepts designation of the first image processing unit in the order among the plurality of image processing units that cannot be overtaken;
With
The control unit is configured to perform image processing at a process start stage corresponding to control information included in the input target data in the order among the image processing units preceding the leading image processing unit received by the receiving unit. Determining the rearmost image processing means before the means as the image processing means for starting the processing of the input target data;
An image processing apparatus . The image processing apparatus according to claim 1 or 2 wherein the plurality of image processing means and performing parallel processing. Computer
A plurality of image processing means capable of operating in parallel in a prescribed order, and a plurality of image processing means for performing image processing on target data according to the order;
An image processing unit that starts processing of the input target data is determined based on control information included in the input target data, and processing of the input target data is started from the determined image processing unit. Control means for controlling;
Accepting means for accepting designation of whether each of the plurality of image processing means can be overtaken;
A program to make it function ,
The control means includes a head image processing means of the plurality of image processing means, and a group consisting of an image processing means next to the image processing means designated as overtaking in the designation accepted by the accepting means. Among these, in the order, the image processing means that is the backmost image processing means before the image processing means at the processing start stage corresponding to the control information included in the input target data is the image that starts the processing of the input target data. To determine the processing means,
A program characterized by that .   Computer
  A plurality of image processing means capable of operating in parallel in a prescribed order, and a plurality of image processing means for performing image processing on target data according to the order;
  An image processing unit that starts processing of the input target data is determined based on control information included in the input target data, and processing of the input target data is started from the determined image processing unit. Control means for controlling;
  An accepting unit that accepts designation of the first image processing unit in the order among the plurality of image processing units that cannot be overtaken;
  A program to make it function,
  The control unit is configured to perform image processing at a process start stage corresponding to control information included in the input target data in the order among the image processing units preceding the leading image processing unit received by the receiving unit. Determining the rearmost image processing means before the means as the image processing means for starting the processing of the input target data;
  A program characterized by that.