JP3633849B2 - Image processing system - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image processing system that performs electronic filing without causing the user to be aware of the copying function and the FAX function in parallel, and in particular, a printer apparatus (MFP) having various functions also called a digital multifunction peripheral. : An image processing system suitable for Multi Function Printer).
[0002]
[Prior art]
As this type of image processing system, for example, an image processing system disclosed in Japanese Patent Publication No. 8-15229 is known. The present invention has been made for the purpose of enabling reading of an original image or recording of an image in parallel during reception of image data from a communication line, and receiving means performed based on a DMA transfer request. When a DMA transfer request is issued from the reading means or recording means during the DMA transfer of the received image data from the received image data, the received image data DMA transfer is interrupted, and the DMA transfer request from the reading means or recording means is interrupted during the interruption. A predetermined amount of read image data from the reading means or a predetermined amount of recorded image data is transferred to the recording means, and the DMA transfer of the predetermined amount of read image data or recorded image data is received after the DMA transfer is completed. DM of received image data stored in the buffer memory of the receiving means based on the DMA transfer request from the means It is configured so as to resume the transfer.
[0003]
[Problems to be solved by the invention]
As described above, in the invention described in the above Japanese Patent Publication No. 8-15229, it is possible to execute the reading of the original image or the image recording in parallel while receiving the image data from the communication line. The operation is possible, but the filing function was not considered.
[0004]
The present invention has been made in view of the actual situation of the conventional technology, and an object of the present invention is to provide an image processing system that enables at least a parallel operation of a copying function and a FAX function and also has a filing function. It is in.
[0005]
[Means for Solving the Problems]
In order to achieve the object, the first means is an image processing system connected to the network (170), which performs predetermined image processing on the input image data and outputs the image data, and transfers the image data in a time division manner. A data bus line (151), an image recording means (120) for capturing the recorded image data on the image data bus line and recording it on a recording medium, and a computer bus line (150) used for DMA transfer of the image data A first storage means (103) for storing image data on the computer bus line; a second storage means (160) for storing image data stored in the first storage means (103); The image data stored in the first and / or second storage means is transferred to an image file server connected to the network (170). A network connecting means (104), sending or receiving a means for reading the connected image to the computer bus lines to the image data bus line (110), the connected image in the image data bus lines and the computer bus line Means (130), read image data read by the reading means (110) on the image data bus line, transmitted image data transmitted and received by the means for transmitting or receiving (130) , and received image data Are temporarily stored in a plurality of buffers, and a bridge means (107) for DMA transfer of image data to the computer bus line for each DMA request from the plurality of buffers (105, 106) is provided.
[0006]
In this case, the DMA request of the bridge means may be made when the buffer of the bridge means reaches a predetermined amount.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the drawings.
[0012]
<First Embodiment>
Overall Configuration FIG. 1 is a block diagram showing an electrical configuration of a digital copying machine (MFP) 100 which is an overall embodiment of the present invention. The MFP 100 reads out a control program stored in the ROM 102 in advance by the CPU 101, and uses the RAM 103 as a work area for temporarily storing image data, sensor signals, and the like, and performs overall control of each part of the apparatus, thereby performing various processes as a data processing apparatus. And the following processes are executed.
[0013]
The MFP 100 is connected via a network 107 by a network I / F (NCU) 104 to a file device (image file server) (not shown) that stores and manages data in a large-capacity storage device (storage means) so that data can be retrieved and read. A file system is built to transfer the processed image data so that it can be reused (accumulated and stored) by transferring the image data processed by the user to the file device as it is regardless of whether there is a transfer command. . Needless to say, the file device is not limited to being connected via a network, but may be directly connected. Furthermore, it is possible to transfer a file to a replaceable medium via the removable medium I / F 108. As an exchangeable medium, for example, HDD, FDD, Flash ROM Card, etc. can be used.
[0014]
This MFP 100 is connected to a CPU 101 via a system bus 150 together with a ROM 102, a RAM 103 and an NCU 104, a scanner 110, a plotter 120, an FCU 130 (described later), an operation unit (DISPLAY & OPERATION Controller) 140, a FIFO1 buffer 105, a FIFO2 buffer 106, a DMA controller 107, A removable media I / F 108 and a hard disk device (HDD) 160 are connected, and the CPU 101 performs overall control of these units, whereby the scanner 110 functions as an image reading device and transmits image data by facsimile communication. Copy having a function, a copy function for recording and outputting read image data, and a record function for recording and outputting received image data Can be used as a machine. The removable medium I / F 108 is connected to a replaceable medium 161 such as an HDD, FDD, or Flash ROM Card.
[0015]
The FIFO 1 buffer 105, the FIFO 2 buffer 106, and the DMA controller 107 are configured by a 1394 LSI, and are connected to an IEEE 1394 bus 151 that is an image data bus. The FCU 130, the scanner 110, and the plotter 120 have an IEEE 1394 interface, and are connected to an IEEE 1394 bus 151 that is an image data bus. Image data can be transferred to the IEEE 1394 bus 151, which is an image data bus, in a time-sharing manner.
[0016]
-Operation-Transfer of image data in time division When image data is transferred in time division, it is performed as follows.
[0017]
Different channels of IEEE1394 are used when the scanner data is transferred to the image data bus 151 and when the plotter data is transferred to the image data bus 151. As the transfer mode of IEEE1394, asynchronous stream transfer can be used. If large-capacity data transfer is required, the isochronous transfer mode may be used.
[0018]
Briefly, the scanner 110 is, for example, known after a sheet-like document set on a document table is separated and fed one by one by an automatic document feeder (ADF) and positioned on a contact glass (reading position). With this reading method, the document (document consisting of images, characters, etc.) placed on the contact glass is irradiated with light from an exposure lamp, and reflected light from the image surface is photoelectrically converted by a CCD to read image data. . The read image data is transferred to the image data bus 151 in a time division manner.
[0019]
The plotter 120 forms an electrostatic latent image by optical writing on a photosensitive member charged while rotating image data transferred to the image data bus 151 in a time-sharing manner, for example, by a known electrophotographic recording method. Then, development is performed by attaching toner to the electrostatic latent image, and the developed toner image is transferred and fixed on a sheet conveyed from a sheet feeding cassette, and is discharged out of the apparatus. Of course, it is obvious that an image can be recorded by an ink jet method other than the electrophotographic method.
[0020]
The FCU 130 modulates and demodulates image data and various procedure signals, and executes line control with the PSTN (public line) to connect or disconnect the line, thereby transmitting and receiving FAX data to and from the FAX terminal at the other end. Fax communication is performed. The scanner image data on the image data bus 151 is used as transmission image data for FAX transmission. The received data at the time of reception is transferred onto the image data bus 151 and recorded by the plotter 120.
[0021]
Note that the MFP 100 may include an image processing unit that encodes and compresses image data and decodes and decompresses the image data when reproducing the image data. When copying, the MFP 100 enlarges / reduces the image to a size instructed by the user. Needless to say, image processing or the like can be performed on the image data.
[0022]
The operation unit 140 includes a key port 141 and a display port 142 prepared in an operation port provided at the upper front of the apparatus main body. The display port 142 includes various driving conditions, apparatus states, input conditions, and the like. A display operation LCD (Liquid Crystal Display) with a touch panel is used to display information and perform input operations such as selection input by a user such as function selection and setting input.
[0023]
.. Parallel operation of parallel processing copying and FAX transmission is performed as follows.
[0024]
First, a multi-copy command is designated from the display operation unit 140 of the MFP 100. The scanner 110 scans only one copy. The read image data read by the scanner 110 is transferred to the image data bus 151 in a time division manner. The read image data is transferred from the image data bus 151 time-divided on the image data bus 151 to the FCU 130 and stored in the HDD 160. The read image data stored in the HDD 160 is transferred again to the image data bus 151 via the FCU 130, transferred to the plotter 120, and recorded. While the image is transferred from the HDD 160 via the image data bus 151, the read image data read from the scanner 110 is transferred to the FCU 130 via the image data bus 151, and is transmitted by FAX.
[0025]
The image data on the image data bus 151 is stored in the RAM (first storage means) 103 and the HDD (second storage means) 160. The processing procedure at this time is as follows.
[0026]
Normally, the image data on the image data bus 151 is transferred to the FIFO 1 buffer 105 and the FIFO 2 buffer 106. Since the image data transferred on the image data bus 151 during the parallel operation of copying and FAX transmission is the same image data copied in plural copies, it is not transferred to the FIFO 2 buffer 106. The CPU 101 sets the DMA controller 107 in advance so that image data is transferred to the RAM 103 when the memory capacity of the FIFO1 buffer 105 or the FIFO2 buffer 106 reaches a predetermined amount. Further, as shown in FIG. 2, the image data from the FIFO 1 buffer 105 and the image data from the FIFO 2 buffer 106 are set in different areas on the RAM 103 (image area 1, image area 2—FIG. 2). The DMA priority order of the DMA controller 107 is set as the FIFO 1 buffer 105 only at the first DMA transfer from the CPU 101. Of course, the DMA request from the FIFO2 buffer 106 may be set as the first DMA transfer request. When the predetermined amount of DMA transfer is completed, the DMA controller 107 continues to wait for the next DMA request of the FIFO1 buffer 105 and the FIFO2 buffer 106. When there is a DMA request for only one of the FIFO1 buffer 105 and the FIFO2 buffer 106, the DMA controller 107 accepts the DMA request.
[0027]
The CPU 101 of the MFP 100 is configured as a transfer unit. For example, the read image data read by the scanner 110 is recorded and output on a sheet by the plotter 120 or faxed by the FCU 130 to specify the read image data. Processing date and time information and specific information such as the number of copies and the other party's telephone number are added and the same image data is temporarily stored in the hard disk device (storage means) 160. Performs transfer processing to be sent to the file device.
[0028]
On the other hand, the file device connected to the MFP 100 can be configured by a general personal computer (PC), if not briefly illustrated. That is, by operating the keyboard or mouse while looking at the display and performing arithmetic processing in accordance with the application program read from the memory, it is transferred from the MFP 100 in the same manner as performing various processes such as document and image creation. The image data is stored and managed in the mass storage device so that it can be reused by searching / reading out and displaying / recording it. As a result, the image data is associated with the specific information for each continuously processed document, stored and stored in the large storage capacity device (HDD 160), and then a part of the document (for example, in response to a request from the user (for example, The thumbnail image of the first page) is displayed on the display (operation display unit 140) in a calendar display format so that it can be selected based on specific information such as the processing date and time, and the selected image data has a large capacity in document units. For example, the data can be read out from the storage device, and sent to the MFP 100 to be recorded and output, and the contents can be checked and reused. Note that image data in document units may be sequentially displayed and output on a display, and the image data as it is digitized may be reusable, for example, by processing on a PC.
[0029]
<Second Embodiment>
Overall Configuration FIG. 3 is a block diagram showing a configuration of a digital copying machine (MFP 100) according to the second embodiment. Components equivalent to those in the first embodiment shown in FIG. 1 are denoted by the same reference numerals, and redundant description is omitted.
[0030]
The MFP 100 is connected to a CPU 101 via a system bus 150 together with a ROM 102, a RAM 103, and an NCU 104, an operation unit (DISPLAY & OPERATION Controller) 140, a removable media I / F 108, a hard disk device (HDD) 160, a printer controller 210, a capture unit 220, A commander unit 230 is connected, and the CPU 101 performs overall control of these units. The IEEE 1394 bus 151 that is an image data bus is connected to the FCU 130, the scanner 110, the plotter 120, the printer controller 210, the capture unit 220, and the commander unit 230, and the CPU 101 passes through the commander unit 230. By comprehensively controlling each part of the apparatus, it can be used as a printer, a copier, a facsimile machine, and a network scanner. Other parts not specifically described are configured in the same manner as the MFP 100 according to the first embodiment described above, and the operations of the respective parts including image formation are performed in the same manner.
[0031]
· Operation ·· Parallel processing ··· Parallel operation of network printing and FAX transmission The parallel operation of network printing and FAX transmission is performed as follows.
[0032]
Print data is temporarily stored in the HDD 160 from the network 170 connected to the NCU 104. The printer controller 210 converts the print data stored in the HDD 160 into image data that can be recorded by the plotter 120. The image data is transferred to the plotter 120 via the image data bus 151 and recorded. During the transfer of the image data from the HDD 160, the image data read from the scanner 110 is transferred to the FCU 130 via the image data bus 151 and transmitted by FAX. If only the captured image data is captured by the capture unit 220 instead of FAX transmission, the network printing and the network scanner can operate in parallel.
[0033]
... Parallel operation of copying and FAX transmission The parallel operation of copying and FAX transmission is performed as follows.
[0034]
First, a multi-copy command is designated from the display operation unit 140 of the MFP 100. The scanner 110 scans only one copy. The read image data read by the scanner 110 is transferred to the image data bus 151 in a time division manner. The capture unit 220 stores the read image data on the image data bus in the HDD 160 while temporarily storing it in the RAM 103. The printer controller 210 transfers the read image data stored in the HDD 160 to the plotter 120 on the image data bus 151 again to record an image. During the transfer of the image data from the HDD 160, the image data read from the scanner 110 is transferred to the FCU 130 via the image data bus 151 and transmitted by FAX. If the captured image data is captured by the capture unit 220 instead of FAX transmission, the copying operation and the network scanner can be performed in parallel.
[0035]
... Parallel operation of network scan and FAX reception The parallel operation of network scan and FAX reception is performed as follows.
[0036]
The read image data read by the scanner 110 is transferred to the image data bus 151 in a time division manner. The capture unit 220 stores the read image data on the image data bus 151 in the HDD 160 while temporarily storing it in the RAM 103. At the same time, the FAX reception data is transferred onto the image data bus 151 and recorded by the plotter 120.
[0037]
The CPU 101 of the MFP 100 is configured as a transfer unit. For example, the read image data read by the scanner 110 is recorded and output on a sheet by the plotter 120 or faxed by the FCU 130. After adding the processing date and time information for specifying and specifying information (search key) such as the number information and the destination telephone number and temporarily storing the same image data in the hard disk device (storage means) 160, the NCU 104 is And transfer processing to be sent to a file device (not shown).
[0038]
The file device connected to the MFP 100 can also be configured by a general personal computer (PC) as in the first embodiment described above, and a document or an image can be obtained by the same operation as in the first embodiment. Various processes such as creation can be performed and stored and managed in the mass storage device so that they can be reused, and can be reused.
[0039]
Transfer of image data in time division when using IEEE 1394 When IEEE 1394 is used as the image data bus 151, image data is transferred in time division as follows.
[0040]
Since IEEE1394 is a serial bus, if a different channel is specified for each image data output device (hereinafter referred to as an image output device) using an asynchronous stream packet of P1394a, the image data Can be transferred in a time-sharing manner. If at least one of the devices on the image data bus 151 is compatible with an isochronous resource manager that manages IEEE 1394 channels, a channel can be secured for each image output device. In the present embodiment, for example, the commander unit 230 can be an isochronous resource manager. If there are a plurality of isochronous resource manager candidates, the standard conforms to IEEE 1394, so that one of the isochronous resource manager candidates is always an isochronous resource manager. In this embodiment, since the FCU 130, the scanner 110, and the printer controller 210 operate as image output devices, these image output devices secure channels from the commander unit 230 that is an isochronous resource manager. Furthermore, if an isochronous stream packet (Isochronous Stream Packet) is used, the bandwidth is guaranteed, so that a large amount of data can be transferred in real time. In this case, not only the channel but also the bandwidth is secured from the isochronous resource manager. The channel and bandwidth are secured by the IEEE 1394 Lock request. In this case, since the required bandwidth differs for each image output device, bandwidth is secured before copying, printing, fax transmission, fax reception, and network scanning. Return the reserved bandwidth.
[0041]
... Channel securing procedure for image output device Channel securing for one image output device is performed in the following procedure.
[0042]
a) Read the Channels_Available register value of the isochronous resource manager.
[0043]
b) Find an empty channel ch in the Channels_Available register value.
[0044]
c) Allocate ch with a Lock request to the Channels_Available register of the isochronous resource manager.
[0045]
d) The channel ch of the image output device is registered in the capture unit.
[0046]
e) The channel ch is registered in one image data input device for inputting the image data of the image output device (other than the network scanner).
[0047]
... Bandwidth securing procedure of image output device Bandwidth securing of one image output device is performed in the following procedure.
[0048]
a) Read the Bandwidth_Available register value of the isochronous resource manager.
[0049]
b) Calculate the required bandwidth band.
[0050]
c) Reserve a band with a Lock request for the Bandwidth_Available register of the isochronous resource manager.
[0051]
d) Register the bandwidth of the image output device in the capture unit.
[0052]
The image output device secures the above-mentioned channel and bandwidth, and then outputs image data on IEEE1394 in the asynchronous stream transfer mode or the isochronous transfer mode. The image input device inputs image data for a registered channel ch. When the image input device is the plotter 120, the input image data is recorded. When the printer controller 210 is an image output device, the plotter 120 is an image input device, and a printing operation can be executed via the NCU 104. When the scanner 110 is an image output device and the plotter 120 is an image input device, a copying operation can be performed. When the scanner 110 is an image output device and the FCU 130 is an image input device, FAX transmission is possible. When the FCU 130 is an image output device and the plotter 120 is an image input device, FAX reception is possible. Of course, there may be a plurality of image input devices and image output devices. However, it must be within the channel and bandwidth limits of the isochronous resource manager.
[0053]
Operation of capture unit The capture unit 220 captures image data for the registered channel ch. If multiple channels are registered, multiple channels can be captured. The captured image data is temporarily stored in the RAM 103 via the system bus 150. The image data on the RAM 103 is stored in the HDD 160 with a search key added, and the same image data is transferred to an image file server other than the figure via the NCU 104.
[0054]
【The invention's effect】
As described above, according to the first aspect of the present invention, the image data bus line has a function of transferring the image data in a time division manner, and the read image data, the transmission image data, and the reception image data on the image data bus line. Are temporarily stored in a plurality of buffers, and image data is DMA-transferred to the computer bus line on the basis of each DMA request from the plurality of buffers. Electronic filing is possible without doing so.
[0055]
According to the second aspect of the present invention, since the DMA request is made when the buffer of the DMA transfer means reaches a predetermined amount, the electronic request can be made without making the user conscious while performing the parallel operation of copying and FAX transmission. Filing becomes possible.
[Brief description of the drawings]
FIG. 1 is a block diagram showing a configuration of an MFP according to a first embodiment of the present invention.
FIG. 2 is an explanatory diagram showing a state of an image area on a RAM of the MFP according to the first embodiment of the present invention.
FIG. 3 is a block diagram showing a configuration of an MFP according to a second embodiment of the present invention.
[Explanation of symbols]
100 Digital copier (MFP)
101 CPU
102 ROM
103 RAM
104 NCU
105 FIFO1
106 FIFO2
107 DMA controller 108 Removable disk controller 110 Scanner 120 Plotter 130 FCU
140 Operation unit 150 System bus 151 Image data bus (IEEE1394 connection)
160 Hard Disk 170 Network 210 Printer Controller 220 Capture Unit 230 Commander Unit

Claims (2)

In an image processing system connected to a network and performing predetermined image processing on input image data and outputting it,
An image data bus line for transferring image data in a time-sharing manner;
Means for taking recorded image data on the image data bus line and recording it on a recording medium;
A computer bus line used for DMA transfer of image data;
First storage means for storing image data on the computer bus line;
Second storage means for storing image data stored in the first storage means;
Means for transferring the image data stored in the first and / or second storage means to an image file server connected to a network;
Means for reading an image connected to the computer bus line and the image data bus line;
Means for transmitting or receiving an image connected to the computer bus line and the image data bus line;
On the image data bus line, read image data read by the reading unit, transmission image data transmitted / received by the transmitting or receiving unit , and reception image data are temporarily stored in a plurality of buffers, and the plurality Means for DMA transfer of image data to the computer bus line for each DMA request from the buffer;
An image processing system comprising: 2. The image processing system according to claim 1, wherein the DMA request of the means for performing DMA transfer is made when the buffer of the means reaches a predetermined amount.

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