JPH0591235A - High-speed image signal processing system - Google Patents

Abstract

(57) [Abstract] [PROBLEMS] To provide a high-speed image signal processing system for encoding an image signal read at high speed and / or recording a decoded signal of the encoded signal without using a page memory. [Structure] An image signal obtained by scanning a document is transferred to an image bus 1.
In the image signal processing system which supplies the coded signal to the system bus 2 via a, the code bus 3 is provided at the output of the coder 31 and the coded signal is supplied to the code bus 3. Encoded signal storage means 7 for temporary storage
0 is coupled, and the input / output of the coded signal of the coded signal storage means 70 and the code bus 3 are provided between the code bus 3 and the system bus 2.
The code transfer means 110 for transferring the encoded signal of 1 to the system bus 2 is arranged, and the control means 100 for controlling the entire system and the management information for managing the documents stored in the encoded signal storage means 70 are stored on the system bus 2. The document management information storage means 80 is combined.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a high-speed image for performing a process of encoding an image signal and converting it into an encoded signal and / or a process of decoding the encoded signal into an original image signal at a high speed. The present invention relates to a signal processing system, and more particularly to a high-speed image signal processing system suitable for use in encoding a bitmap image signal handled by a facsimile device at a high speed and decoding the encoded image signal.

[0002]

2. Description of the Related Art Conventionally, as a high-speed image signal processing system, a process of encoding an image signal and converting it into an encoded signal and / or a process of decoding the encoded signal into an original image signal at a high speed are performed. The following were known.

The first one is, for example, JP-A-58-10.
FIG. 13 is a block diagram showing a schematic configuration of the entire system, which is of the type disclosed in No. 71.

In FIG. 13, the reading means 10 is means for scanning an original to generate an image signal, for example, C
A CD (charge coupled device) is used. The reading image quality improving unit 20 is a unit that corrects a distortion in the image signal, generates a high-quality binary image signal, and outputs the binary image signal to the image bus 1. For example, Hitachi LSI HD63084 is used. The encoding / decoding means 30 receives the binary image signal from the image bus 1 and receives the MH (M
uniform Huffman), MR (Modif
ied READ) or MMR (Modify
ed MR) and outputs the coded signal to the system bus 2, or receives the coded signal from the system bus 2 and decodes the coded signal to convert it into a binary image signal. Output means such as Hitachi LS
IHD63183 is used. The page memory 40 is
A storage unit that can store at least one page or more of binary image signals, for example, a semiconductor memory is used. The recorded image quality improving means 50 is, for example, 8 pixels / m from the image bus 1.
It is a means for inputting m image signals, converting them into high-quality image signals of 16 pixels / mm, and outputting them to the recording means 60. The recording unit 60 is a unit that prints the high-quality image signal on recording paper, and for example, a laser printer is used. The encoded document storage unit 70 is a unit that stores a plurality of pages of a document including encoded signals in page units, and for example, a semiconductor memory is used. The document management information storage means 80 is means for storing management information such as the encoding system and storage area of the document stored in the encoded document storage means 70.
A semiconductor memory is used. The communication means 90 is means for transmitting / receiving the encoded signal to / from the communication line, and when the communication line is a telephone line, a modem is used. Control means 10
Reference numeral 0 is means for inputting / outputting control signals via the system bus 2 to execute control operation of the entire system, and for example, a microprocessor is used.

The operation of the system is as follows.

During signal transmission, the reading means 10
The image signal obtained in step 2 is read by the image quality improving means 20.
After being converted into a value image signal, it is temporarily stored in the page memory 40 via the image bus 1. Next, the page memory 40
The binary image signal stored in 1 is encoded by the encoding / decoding means 30, and the encoded signal obtained here is stored in the encoded document storage means 70 via the system bus 2. Next, the encoded signal stored in the encoded document storage means 70 is appropriately transmitted through the communication means 90.

When receiving a signal, the communication means 9
The encoded signal received at 0 is encoded document storage means 70.
Is temporarily stored in. Next, this encoded document storage means 70
The encoded signal stored in is decoded by the encoding / decoding means 30 and converted into a binary image signal, and stored in the page memory 40 via the image bus 1. Next, the binary image signal stored in the page memory 40 is converted into an image signal by the recording image quality improving means 50 and recorded by the recording means 60.

The second one is, for example, "Introduction of ASIC in Ultra High Speed Facsimile", Electronic Technology 1988.
FIG. 14 is a block diagram showing a schematic configuration of the entire system, which is of the type disclosed in the April issue, pages 64-70.

The configuration shown in FIG. 14 is different from the configuration shown in FIG. 13 in that the encoding / decoding means 30 of FIG. 13 is separated according to its function and becomes an encoding means 31 and a decoding means 32. 13 and that the page memory 40 of FIG. 13 is omitted, and the same components as those of FIG. 13 are denoted by the same reference numerals.

Regarding the operation of this system, the point that the binary image signal from the reading image quality improving means 20 is directly supplied to the encoding means 31 and is encoded there, and the decoding means 32 decodes it. The operation is the same as that of the system shown in FIG. 13 except that the binary image signal is directly supplied to the recording image quality improving means 50, and the description thereof will be omitted.

In addition to this, the third type is, for example, the type disclosed in Japanese Patent Laid-Open No. 57-57084.
This content is a bit map document image signal obtained by decoding the received coded signal in a facsimile apparatus that employs a recording unit (for example, a recording device such as a laser printer) that performs recording at a constant speed. Is provided for storing a bit map page memory, and this memory requires a storage capacity of one page or more.

[0012]

First, in the first type, the same binary image signal is transmitted twice on the image bus 1 during processing of one page during transmission and reception. It is necessary to transfer the same coded signal twice on the system bus 2 and to transfer the same signal four times on each bus 1 and 2 at the time of simultaneous transmission and reception. There is something. Therefore, there is a problem that a bus capable of high-speed operation is required in order to increase the speed and enhance the function of this system. The first type requires a large capacity page memory 40 capable of storing pixels of one page or more of a document.
Since it is composed of a semiconductor memory so that it can operate at high speed, there is also a problem that the cost of the entire system increases.

Next, in the second type, it is necessary to transfer the same coded signal twice on the system bus 2 during the processing of one page during transmission and reception. Similar to the first type, there is a problem that a system bus capable of high speed operation is required. Further, in the case of the second type, in order to directly perform encoding and decoding without passing through the page memory 40, the encoding signal is transmitted from the encoding means 31 to the encoded document storage means 70 in accordance with the reading speed. It is necessary to transfer the encoded signal or to transfer the encoded signal from the encoded document storage means 70 to the decoding means 32 in accordance with the recording speed. Therefore, the load of the system bus 2 due to the transfer of the encoded signal becomes large, and the reading is performed. Also, there is a problem that it is difficult to increase the recording speed.

Next, the third type has a problem that it requires a large capacity bitmap page memory.

The present invention is intended to eliminate the above-mentioned problems, and an object thereof is to encode an image signal obtained by reading an original at high speed without using a page memory and convert it into an encoded signal. And / or to provide a high-speed image signal processing system for recording an image signal obtained by decoding an encoded signal.

[0016]

In order to achieve the above object, the present invention supplies an image signal obtained by scanning an original document to an encoding means via an image bus, and obtains the encoded signal obtained there. In the image signal processing system for supplying a code bus to the system bus, a code bus is provided on the output side of the coding means, and the coded document storage means for temporarily storing the output coded signal of the coding means is coupled to the code bus. Then, between the code bus and the system bus, there is arranged code transfer means for inputting / outputting the coded signal to / from the coded document storage means and transferring the coded signal of the code bus to the system bus. Control means for controlling the entire system is connected to the system bus and document management information storage means for storing document management information for managing documents stored in the encoded document storage means. Comprising first means that.

In order to achieve the above object, the present invention provides an image signal which supplies an encoded signal from a system bus to a decoding means and an image signal obtained there is supplied to a recording means via an image bus. In the processing system, a code bus is provided on the input side of the decoding means, and coded document storage means for temporarily storing a coded signal is coupled to the code bus, and between the system bus and the code bus, A control means for arranging a code transfer means for inputting / outputting the coded signal to / from the coded document storage means and for transferring the coded signal of the system bus to the code bus, and controlling the entire system on the system bus; A second means is provided which is combined with a document management information storage means for storing document management information for managing the stored document of the encoded document storage means.

Further, in order to achieve the above object, the present invention supplies an image signal obtained by scanning a document to an encoding means via an image bus, and the obtained encoded signal is sent to a system bus. In the image signal processing system, the coded signal is supplied from the system bus to the decoding means, and the image signal obtained there is supplied to the recording means via the image bus. A common code bus is provided on the input side of the decoding means, and
A coded document storage means for temporarily storing a coded signal is coupled to the code bus, and the coded signal is input to and output from the coded document storage means between the code bus and the system bus. Code control means for transferring the coded signal of the bus to the system bus or transferring the coded signal of the system bus to the code bus is arranged, and the control means for controlling the entire system on the system bus and the control means. The third means includes a document management information storage means for storing the document management information for managing the stored document of the encoded document storage means.

[0019]

According to the first means, the encoding means encodes the image signal read by following the scanning and reading speed of the original at a high speed in real time, and encodes the coded signal obtained thereby. Output to the bus. The code transfer means transfers the coded signal output from the coding means to the coded document storage means in real time at a high speed and temporarily stores it. The code transfer means reads the coded signal temporarily stored in the coded document storage means and transfers the coded signal from the code bus to the system bus. Then, the encoded signal supplied to the system bus is transmitted to the communication line via the communication means coupled to the system bus, or is filed to the filing means which is also coupled to the system bus. .. Note that these operations are controlled and executed by the control means coupled to the system bus.

According to the second means, the coded signal received by the communication means or the coded signal from the filing means is output to the system bus. The code transfer means is
The encoded signal output to the system bus is transferred from the system bus to the encoded document storage means via the code bus.
Further, the code transfer means follows the speed required by the decoding means, reads out the coded signal stored in the coded document storage means onto the code bus and transfers it to the decoding means. The decoding means follows the speed required by the recording means or the display means, decodes the coded signal to convert it into an image signal, and outputs this image signal to the recording means, and if necessary to the display means. Is output. Note that these operations are controlled and executed by the control means coupled to the system bus.

According to the third means, the operations of the first means and the second means are executed in parallel, and all the operations are controlled and executed by the control means coupled to the system bus. ..

[0022]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a high speed image signal processing system according to the present invention will be described with reference to the drawings.

In the following embodiments, the high speed image signal processing system is a facsimile machine, the image signal to be handled is a bit map binary image signal used in the facsimile machine, and the encoding method is applied to the facsimile machine. CCITT (International Telegraph and Telephone Advisory Committee) Recommendation T4. And T.A. The description will be given assuming that the MH code, the MR code, or the MMR code of the international standard code defined in No. 6 is used.

Further, the constant speed recording means is a laser printer which is commonly used in facsimile machines, and this laser printer performs recording in page units with a constant recording time per line and is coded. The processing will be described on the assumption that the processing is performed in line units and the transfer and communication are performed in page units.

By the way, the above-mentioned points are those for which the object is specified for the convenience of explanation of the embodiments, and the present invention is not limited to the above-mentioned points. For example, a high-speed image signal processing system. As a matter of course, even a device other than the facsimile device falls within the technical scope of the present invention as long as the device corresponds to any one of claims 1 to 16.

Prior to explaining the following embodiments, an outline of the overall configuration of a facsimile apparatus to which the present invention is applied will be described. The configuration can be shown, for example, as shown in FIG.

In FIG. 15, the facsimile apparatus is roughly divided into an image scanner section 500, a laser printer section 600, and a controller section 700.
Then, the image scanner unit 500 includes a document table 501,
Automatic document feeder 502, fluorescent lamp 503, lens system 50
4, a charge coupled device (CCD) 505, an image processor 506, and the like, and a laser printer unit 6
00 is a photoconductor drum 601, a developing device 602, a transfer device 6
03, a paper transport body 604, a laser scanner 605, a paper feed cassette 606, a paper feed deck 607, etc. Further, the controller unit 700 includes an image memory 701, a high speed encoder 702, a high speed decoder 703, and image processors 704, 705. , A hard disk 706, a communication device 707, and the like.

The outline of the operation of this facsimile apparatus is as follows.

In the image scanner section 500, the original on the original table 501 is automatically conveyed to the scanning position by the automatic original feeder 502, and scanning is performed there. The optical signal obtained by this scanning is CC through the lens system 504.
D505 is supplied and converted into a corresponding electric signal there, and this electric signal becomes an image signal in the image processor 506 and is output from the image scanner unit 500. Next, in the laser printer unit 600, the photosensitive drum 601, the developing device 602, the transfer device 603, the paper conveying member 604, the laser scanner 605, the paper feeding cassette 606,
The paper feed deck 607 constitutes a well-known electrophotographic recording device, and an image signal to be recorded is a controller unit 70.
Since it is supplied to the laser scanner 605 from 0, the image signal is recorded in the recording device. Further, in the controller unit 700, the image scanner unit 500
The image signal from the image processor is processed by the image processor 704 and then encoded by the high speed encoder 702, and the encoded signal obtained thereby is stored in the image memory 701 or the hard disk 706, or the communication device 707 is appropriately used. The data is transmitted and transmitted to another facsimile machine via. On the other hand, the encoded signal received from the other facsimile apparatus in the communication apparatus 707 is the image memory 701 or the hard disk 7.
06, or after being decoded by the high-speed decoder 703 and converted into an image signal, it is processed by the image processor 705. This image signal is processed by the laser printer unit 6
00, and is recorded and output as a received image.

Here, each embodiment will be described in order.

First, FIG. 1 is a block diagram showing a first embodiment of a facsimile apparatus according to the present invention.

In FIG. 1, reference numeral 1a denotes a first image bus, 1
b is the second image bus, 3 is the code bus, 70 is the encoded document storage means, 110 is the code transfer means, 120 filing means, 130 is the panel, 140 is the display control means, 150
Is a display memory, and 160 is a display means. The same components as those shown in FIGS. 13 and 14 are designated by the same reference numerals. Further, the code bus 3 in the present invention is a bus to which a signal (coded signal or coded document) obtained by coding is transferred exclusively,
The image buses 1a and 1b to which image signals are exclusively transferred and the system bus 2 to which control signals from the control means 100 are also transferred
Is different from.

The reading means 10 is means for scanning an original to generate an image signal. For example, a CCD is used as a photoelectric conversion element and a pulse motor is used as means for scanning and moving the original. The reading image quality improving unit 20 is a unit that corrects a distortion in the image signal, converts the image signal into a high-quality binary image signal, and then outputs the binary image signal to the first image bus 1a. For example, Hitachi LSI HD63084 or the like. Is used. The encoding means 31 receives the high-quality binary image signal from the first image bus 1a, encodes it by the MH, MR or MMR method, and outputs the encoded signal obtained thereby to the code bus 3. For example, Hitachi LSI HD63183 is used. Here, the image bus 1a is a data bus for transferring the high-quality binary image signal from the read image-quality improving means 20 to the encoding means 31. The coded document storage means 70 is a means for storing coded signals (documents) in page units, and for example, a semiconductor memory is used. Transfer of the encoded signal from the encoding means 31 to the encoded document storage means 70 is performed via the code bus 3. The decoding means 32 is the encoded document storage means 70.
From the coded signal via the code bus 3 and decodes the coded signal into the original binary image signal, and the binary image signal is recorded via the second image bus 1b. Fifty
Means for supplying to Hitachi, for example, Hitachi HD6
3183 is used. The recording image quality improving means 50 receives, for example, an image signal of 8 pixels / mm from the second image bus 1b, converts this to an image signal of high image quality of 16 pixels / mm, and outputs the image signal of high image quality. It is a means for supplying to the recording means 60. The recording unit 60 is a unit that prints an input image signal on a recording sheet, and for example, a laser printer is used as described above. The document management information storage means 80 is means for storing management information such as the encoding system and storage area of the document stored in the encoded document storage means 70, and for example, a semiconductor memory is used. The communication means 90 is a means for transmitting and receiving the encoded signal between the system bus 2 and the communication line, and when the communication line is a telephone line, a modem is used. The filing means 120 is means for accumulating and storing a large amount of encoded signals, and for example, an optical disk or a hard disk is used. The document management information storage means 8
0, the communication means 90 and the filing means 120 are all coupled to the system bus 2. Code transfer means 11
Reference numeral 0 is a means for transferring an encoded signal between the encoding means 31 and the decoding means 32, and the communication means 90, the filing means 120 and the encoded document storage means 70, and the transfer method at this time is , For example, DMA (Direc
t Memory Access) is used. The display control unit 140 is a unit that receives the binary image signal decoded by the decoding unit 32, converts the binary image signal into a resolution suitable for display, and generates a display image signal. At this time, the resolution is converted from, for example, 8 pixels / mm to 2 pixels / mm. The display memory 150 is a means for storing the display image signal displayed on the display means 160, and a semiconductor memory is usually used. The display means 160 is means for displaying the display image signal, and for example, a CRT (cathode ray tube) or a liquid crystal panel is used. The control means 100 is
A means for inputting and outputting control signals via the system bus 2 to execute various controls of the entire facsimile apparatus,
For example, a microprocessor is used. Further, the panel 130 is an interface unit for a user to request a desired process from the facsimile machine, and is, for example,
Used for entering a facsimile number.

The operation of the facsimile apparatus having the above-mentioned configuration is as described below, but the operation can be roughly classified into a basic operation and an applied operation.

1. basic action . Memory reading This operation is an operation means until the image signal read by the reading means 10 is temporarily stored in the encoded document storage means 70. First, the control means 100 determines the system bus 2
Read command to the reading means 10, read image quality improving means 20 to improve the image quality, encoding means 31 to the encoding command, and code transfer means 110 to encode the encoded signal from the encoding means 31 into an encoded document storage. The transfer command to be transferred to the means 70 and the transfer destination address of the encoded document storage means 70 are output. In response to these commands, the reading unit 10 scans the document to generate an image signal, and outputs this image signal to the image quality improving unit 20. Next, the read image quality improving means 20 processes the input image signal in image quality in real time and outputs the binary image signal to the first image bus 1a. Then, the encoding means 31 uses the first
The binary image signal from the image bus 1a is read by any one of the three line memories having the built-in, and the remaining two line memories (corresponding to the reference line and the encoding line of the MMR encoding process) are used for encoding. The coding process is performed, and the coded signal obtained thereby is output to the code bus 3. In this case, if the coding processing time per line is selected to be equal to or less than the reading time per line, the above processing can be performed by the three line memories without overflow of information. Next, the code transfer means 110 transfers the coded signal output to the code bus 3 in real time into the coded document storage means 70. The coded signal is coded from the address designated by the control means 100. It is stored in the document storage means 70.

When the reading means 10 finishes reading the last line of the first page of the document, the page end information is read from the reading means 10 and the image quality improving means 20 is read.
The page end information is subsequently notified from the reading image quality improving means 20 to the encoding means 31. When the encoding process of the last line of the page is completed, the encoding means 31 notifies the control means 100 of the page end information. When the page end information is notified from the encoding unit 31, the control unit 100 obtains the address storing the last encoded signal from the code transfer unit 110, and the first page stored in the encoded document storage unit 70. The address and the storage amount of the encoded signal (document) are stored in the document management information storage means 80 as the document management information, and the whole process of the first page is completed.

The subsequent second and subsequent pages are processed in the same manner as the first page, and when the processing of all the pages is completed, the number of pages of the encoded document including a plurality of pages, a document such as an address storing each page, etc. The management information is stored in the document management information storage means 80, and the memory reading process ends.

.. Memory Transmission This operation is an operation means until the encoded signal (encoded document) stored in the encoded document storage means 70 is transmitted. First, when the control unit 100 detects the end of the memory reading operation for one document, the control unit 100 supplies the destination information input from the panel 130 to the communication unit 90 and calls the destination facsimile machine (not shown). Next, when the destination facsimile machine is connected to the communication line, the control means 100 reads the address of the encoded document storage means 70 in which the encoded document to be transmitted is stored from the document management information storage means 80, and The code transfer means 110 indicates the address and the storage amount of the encoded signal (document) of the encoded document to be transmitted.
Then, the transfer instruction from the encoded document storage means 70 to the communication means 90 is output to the code transfer means 110, and the transmission instruction is output to the communication means 90. At this time, the communication unit 90 sends a transfer request of the encoded signal (document) to be transmitted corresponding to the transmission signal transmission speed to the code transfer unit 1.
Output to 10. The code transfer means 110 is a communication means 90.
Upon receipt of this transfer request from the encoded document storage means 7
The coded signal (document) to be transmitted is read out from the address of 0 to the code bus 3 and transferred to the communication means 90 via the system bus 2. The communication unit 90 converts the input coded signal (document) to be transmitted into a medium suitable for the model of the transmission destination, transmits the converted coded signal, and ends the memory transmission. It should be noted that the media conversion is conversion into a signal of a format suitable for the capability of the destination model because the receiving capability varies depending on the model, and specifically, the page size conversion and the encoding method. It consists of conversion, resolution conversion, and combinations thereof.

.. Memory Filing This operation is an operation means up to filing the encoded signal (document) stored in the encoded document storage means 70. First, when the control unit 100 detects the end of the memory reading operation for one document, it reads the address in which the encoded document to be filed is stored from the document management information storage unit 80 and should be filed with this address. Code transfer means 11 for storing the amount of encoded signals (documents) stored
The setting is set to 0, and a transfer command from the encoded document storage unit 70 to the filing unit 120 is output to the code transfer unit 110, and a document identifier and a filing command are output to the filing unit 120. At this time, when receiving the filing command, the filing means 120 outputs a transfer request for the encoded signal (document) to be filed to the code transfer means 110. Code transfer means 110
Upon receipt of this transfer request from the filing means 120, reads out the coded signal (document) to be filed from the address of the coded document storage means 70 to the code bus 3 and sends it through the system bus 2 to the filing means. Transfer to 120. The filing means 120 stores the input coded signal (document) in a large capacity storage medium such as an optical disk, and ends the memory filing.

.. Memory reception This operation is an operation means from receiving a request for receiving an encoded signal (document) to receiving the encoded signal (document) and temporarily storing it in the encoded document storage means 70. First, when the communication unit 90 receives a facsimile signal reception request from any facsimile device (not shown), the communication unit 90 notifies the control unit 100 of this request. At that time, the control means 100 instructs the code transfer means 110 to
The communication unit 90 outputs the code transfer command to the encoded document storage unit 70 and the transfer destination address of the encoded document storage unit 70, and outputs the reception command to the communication unit 90.
Next, the communication unit 90 media-converts the coded signal (document) received from the facsimile device into a format suitable for the device, and outputs the media-converted coded signal (document) to the system bus 2. , And outputs a transfer request for the received encoded signal (document) to the code transfer unit 110. Upon receiving this transfer request from the communication means 90, the code transfer means 110 transfers the received coded signal (document) from the system bus 2 to the code bus 3, and codes the transferred coded signal (document). Write to the address of the encrypted document storage means 70. When the communication unit 90 finishes receiving the encoded signal (document) for one page, the control unit 1 controls the end of receiving one page.
00 is notified. When the control means 100 receives the reception end of this one page, it outputs a transfer end command of the received coded signal (document) to the code transfer means 110, and also transfers the coded signal (transferred to the code transfer means 110). The number of words of (document) is output, and further, in the document management information storage means 80,
The storage destination address of the received encoded signal (document) for one page stored in the encoded document storage means 70 and the document management information such as the storage amount of the encoded signal (document) are written. Subsequently, the same processing as that of the first page is performed on the second and subsequent pages, and the control means 100 receives the fact that the reception of one encoded document is completed from the communication means 90, and the control means 100 receives the code management information storage means 80. The document management information such as the number of pages of the one encoded document is written, and the memory reception is completed.

.. Memory Recording This operation is an operation means until the encoded signal (document) temporarily stored in the encoded document storage means 70 is recorded.
First, the control unit 100 acquires the document management information of the encoded signal (document) to be recorded from the document management information storage unit 80, and stores the encoded document of the encoded signal (document) to be recorded in the code transfer unit 110. A code transfer command from the means 70 to the decoding means 32, a storage destination address thereof and the number of transfer words thereof are output, and a decoding instruction is given to the decoding means 32, an image quality improvement instruction is given to the recording image quality improvement means 50, and a recording means 60. The recording command is output to each. Upon receiving the decoding instruction, the decoding means 32 outputs a transfer request for the coded signal (document) to be recorded in the code transfer means 110. When the code transfer means 110 receives this transfer request from the decoding means 32, the code transfer means 110 reads the coded signal (document) to be recorded from the address of the coded document storage means 70, and then decodes it via the code bus 3. Supply to the means 32. The decoding means 32 decodes the input coded signal (document) to be recorded, and the decoded 2
The value image signal is stored in the internal decoding line memory. In this case, the line memory has at least three lines, which are used as a reference line, a decoding line and a transfer line. When the decoding of the coded signal (document) to be recorded for one line is completed, the decoding line functions as the transfer line, the reference line functions as the decoding line, and the transfer line functions as the reference line, and the next one line is processed. Prepare The decoding means 32 supplies the decoded binary image signal on the transfer line to the recording image quality improving means 50 in real time via the second image bus 1b in response to the request from the recording image quality improving means 50. To do. In response to a request from the recording means 60, the recording image quality improving means 50 converts the binary image signal input from the decoding means 32 into a high quality recording image signal in real time, and then outputs it to the recording means 60. End memory recording.

.. File reading This operation is a means for reading the encoded signal (document) filed in the filing means 120 and temporarily storing it in the encoded document storage means 70. First, the control unit 100 outputs an identifier of a coded signal (document) to be read and a read command to the filing unit 120, and at the same time, a code from the filing unit 120 of the coded signal (document) to be read to the code transfer unit 110. The transfer command to the encoded document storage unit 70 and the transfer destination address are output. At this time, the filing means 12
0 receives the identifier of the coded signal (document) to be read and its read command, reads the coded signal (document) to be read page by page, and sends a transfer request for the coded signal (document) to be read to the code transfer means. Output to 110. Upon receiving this transfer request, the code transfer means 110 transfers the coded signal (document) to be read, which is output by the filing means 120, from the system bus 2 to the code bus, and then writes the coded signal to the address of the coded document storage means 70. Do. When the coded signal (document) to be read reaches the breaks in page units and document units, the filing unit 120 notifies the control unit 100 of page end and document end. Upon receiving this notification, the control unit 100 writes the document management information such as the storage address of each page and document and the capacity of the encoded signal (document) to be read in the document management information storage unit 80 and ends the file reading.

.. Memory Display This operation is an operation means until the display means 160 displays the encoded signal (document) stored in the encoded document storage means 70. First, the control means 100 obtains the document management information of the encoded signal (document) to be displayed from the document management information storage means 80, and stores the encoded document of the encoded signal (document) to be displayed in the code transfer means 110. The means 70 outputs the code transfer instruction to the decoding means 32, the storage destination address thereof and the number of transfer words thereof, the decoding instruction to the decoding means 32, and the display instruction to the display means 140. When the decoding command is input, the decoding means 32 outputs a transfer request for the coded signal (document) to be displayed on the code transfer means 110. When the code transfer means 110 receives this transfer request from the decoding means 32, it reads the coded signal (document) to be displayed from the address of the coded document storage means 70 and then decodes it via the code bus 3. Supply to the means 32. Decoding means 32
Decodes the input coded signal (document) to be displayed,
The decoded binary image signal is stored in the internal decoding line memory. Subsequently, the decryption unit 32 responds to the request from the display control unit 140 to decrypt the transfer line 2
The value image signal is supplied to the display control means 140 via the second image bus 1b. Next, the display control means 140 converts the resolution of the binary image signal input from the decoding means 32, generates a display image signal and writes it in the display memory 150, and at the same time outputs this display image signal from the display memory 150. The data is read out and supplied to the display means 160, the coded signal to be displayed is displayed, and the memory display is ended.

2. Applied operation. Facsimile (FAX) Transmission This operation is an operation unit realized by combining the memory reading operation and the memory transmitting operation. In this case, since the memory reading operation and the memory transmitting operation are independent, the original can be read at high speed regardless of the transmission speed of the communication line. The system bus 2 usually has a fixed bus throughput because many controlled objects are connected, but since a coded signal (document) does not flow on the system bus 2 when reading a memory, high-speed processing can be realized. In addition, high-speed reading at a constant speed can be realized without a page memory. For example, when scanning an A4 size document at 8 pixels / mm for 1 second (in this case,
Since 4 megapixels are processed per second), since there is no page memory, it is necessary to perform MH coding in real time in accordance with the reading speed.
Since it reaches 5 times, the speed of the encoded signal (document) output from the encoding means 31 reaches 18 megabits / second. When an encoded signal (document) flows on the system bus 2 at this speed, the load on the system bus 2 becomes large and the system bus 2
However, in the present embodiment, since the encoded signal (document) flows only through the code bus 3 at the time of memory reading, the page memory is read at a constant speed at a high speed. It can be realized without using it. Further, when the second document is being read into the memory, the encoded signal (document) output at high speed from the encoding means 31 does not flow on the system bus 2. Therefore, at the same time, the first document is transmitted to the memory. This can be realized, and there is an effect that the throughput of the entire device can be increased.

.. Read Filing This operation is an operation unit that can be realized by combining the above memory read operation and the above memory filing operation. Similar to the facsimile (FAX) transmission, the reading filing according to the present embodiment has effects such as high-speed reading at a constant speed without using a page memory, reduction of the load on the system bus 2, and improvement of system throughput.

.. Reception of Facsimile This operation is an operation means that can be realized by combining the memory receiving operation and the memory recording operation. Also in this case, since the memory recording operation and the memory receiving operation are independent, the document can be recorded at high speed regardless of the transmission speed of the communication line. As mentioned above, the system bus 2 is usually
The bus throughput is fixed because many controlled objects are connected, but since the encoded signal does not flow on the system bus 2 during memory recording, the received signal can be processed at high speed, and the laser printer It is possible to realize such high speed recording at a constant speed without using a page memory. For example, a document of A4 size is 8 pixels / mm
If you want to read the MH-coded document and record the MH-encoded document in 1 second (in this case, 4 megapixels will be recorded in 1 second), you need to follow the recording speed and perform MH decoding in real time because there is no page memory. Since the code amount reaches 4.5 times the maximum amount of the image, the transfer rate of the coded signal input to the decoding means 32 reaches 18 megabits / second. When an encoded signal (document) flows on the system bus 2 at this speed, the load on the system bus 2 becomes large and the system bus 2
However, in the present embodiment, since the coded signal (document) flows only on the code bus 3 at the time of memory recording, the constant speed memory recording is performed at a high speed. It can be realized without using page memory. Further, since the coded signal (document) does not flow on the system bus 2 when the first document is recorded in the memory, the second document can be received in the memory at the same time, and the throughput of the entire system can be increased. is there.

.. Filing document recording This operation is an operation unit that can be realized by combining the file reading operation and the memory recording operation. In the filing document recording according to the present embodiment, similar to the facsimile (FAX) reception, there are effects such as recording at a constant speed at a high speed without using a page memory, reducing the system bus load, and improving the system throughput.

.. Read / Display This operation is an operation means that can be realized by combining the memory read operation and the memory display operation.

.. Reception display This operation is an operation unit that can be realized by combining the memory reception operation and the memory display operation.

.. Filing display This operation is an operation means that can be realized by combining the file read operation and the memory display operation.

The above-mentioned series of display operations are for decoding and displaying the coded signal (document) stored in the coded document storage means 70 connected to the code bus 3, and therefore the system bus is used. The load of 2 is reduced. Further, since the display is realized without using the page memory for storing the document, the decoded image signal is once stored in the page memory, then read out and transferred to the display control means 140. Since it is possible to transfer the decoded image signal twice only once,
Therefore, it can be displayed at high speed. In addition, since the display image signal stored in the display memory 150 generally has a lower resolution and a smaller screen than the decoded image signal, the storage capacity required by the display memory 140 is smaller than the page memory. There is an effect that the cost can be reduced.

.. Copy This operation is an operation means that can be realized by combining the memory reading operation and the memory recording operation.

As described above, in the present embodiment, all the basic operations are processed with the encoded document storage means 70 as the start or end of the signal transfer. Therefore, for example, the memory read operation and the facsimile (FAX) operation are performed. Two or more individual operations such as a receiving operation can be processed at the same time, and the throughput of the entire system can be improved. Further, even if two or more individual operations such as a memory reading operation and a facsimile (FAX) receiving operation are simultaneously processed, the encoded signal (document) flowing on the system bus 2 is encoded by the communication means 90. Since only the encoded signal (document) at the time of facsimile reception transferred to the encoded document storage unit 70, there is an effect that two or more independent operations can be sufficiently processed with a small load on the system bus 2.

FIG. 2 is a block diagram showing the detailed structure of the coding means 31 shown in FIG.

In FIG. 2, 311 is a first switch,
Reference numerals 312 to 314 denote first to third line memories, 31
Reference numeral 5 is a second switch, and 316 is an encoding circuit.

The operation of the encoding means 31 shown in FIG. 2 is as follows.

Each of the first line memory 312, the second line memory 313, and the third line memory 314 has a storage capacity capable of storing an image signal for one line of a document. , The first image bus 1a from the reading image quality improving means 20, respectively.
It is used as a transfer line for an image signal input via the, a coding line for coding the image signal, and a reference line for two-dimensional coding (two-dimensional coding of MMR and MR). The first switch 311 is a switch that selects any one of the three line memories 312 to 314 as a transfer line, and for example, the first line memory 31.
When 2 is selected as the transfer line and the transfer of the image signal for one line is completed, the second line memory 313 is selected as the transfer line in the next one line.
The three line memories 312 to 314 are sequentially selected line by line as transfer lines and connected to the first image bus 1a. The second switch 315 selects a reference line and an encoding line from the three line memories 312 to 314 and selectively connects them to the encoding circuit 316. For example, the second line Memory 313
Is a reference line and the third line memory 314 is selected as an encoding line, and encoding of one line is completed, then in the next line, the third line memory 314 is used as a reference line and the first line memory 312 is selected as the encoding line. Further, the encoding circuit 316 uses the M
A circuit for encoding H, MR and MR systems,
The image signals of the reference line and the encoding line (the reference line is not necessary when MH) are input and the encoded signal is output to the code bus 3. Since the operation inside the encoding circuit 316 and the operation related to the encoding circuit 316 are the same as the operation of the conventional circuit of this type, detailed description thereof will be omitted.

Further, in FIG. 3, when the encoding means 31 of FIG. 2 is used as the encoding means 31 of FIG. 1, from the reading of the original document to the transfer of the encoded signal (document) to the encoded document storage means 70. 8 is a time chart showing a temporal flow of data in processing (that is, the memory reading operation).

In FIG. 3, reference numerals 1, 2, ..., E-1, E denote lines in each page of the original document, for example, 1 is the head line of a page, and encoding is one-dimensional. The code MH system (that is, the reference line is unnecessary) is adopted.

First, between the times t1 and t2, the reading of the first line of the document is started, the read image signal is subjected to high-quality image processing in real time, and the processed image signal is stored in the encoding means 31. Transfer to the transfer line memory. Then, between the times t2 and t3, the second document
The line is read and transferred to the transfer line memory, at the same time, the first line is encoded, and following this encoding, the encoded signal (document) is transferred to the encoded document storage means 70 in real time. Do. Below, time t3
The same operation is performed from t4 to time te-tee, the reading of the document and the transfer to the transfer line memory are completed for one page at time te, and the encoding and the transfer to the encoded document storage unit 70 are not performed. One page is finished at time tee. In this case, if the coding processing time per line including the transfer time of the coded signal (document) is less than the reading time per line, the reading speed is tracked as shown in the time chart of FIG. Then, all lines can be encoded. That is, without providing a page memory between the read image quality improving means 20 and the encoding means 31,
Three line memories 312 to 31 in the encoding means 31
4 can be used to realize high-speed reading at a constant speed.

FIG. 4 is a block diagram showing the detailed structure of the decoding means 32 shown in FIG.

In FIG. 4, 321 is a first switch,
322 to 324 are first to third line memories, 32
Reference numeral 5 is a second switch, and 326 is a decoding circuit.

The operation of the decoding means 32 shown in FIG. 4 is as follows.

Each of the first line memory 322, the second line memory 323, and the third line memory 324 has a storage capacity capable of storing an image signal for one line of a document, and these line memories 322 to 324 are provided. Is a transfer line for transferring the image signal to the recording image quality improving means 50 via the second image bus 1b, a decoding line for storing the decoded image signal, and a two-dimensional decoding (MMR and MR).
It is used as a reference line at the time of decoding the two-dimensional code of the method). Further, the first switch 321 selects any one of the three line memories 322 to 324 as a transfer line, and the second switch 325 selects 3 lines.
The reference line and the decoding line are selected from one of the line memories 322 to 324 and connected to the decoding circuit 326. The decoding circuit 326 is a circuit for performing MH, MR, and MR decoding, and inputs a coded signal from the code bus 3 and writes the decoded image signal in a decoding line. Since the operation inside the decoding circuit 326 and the operation related to the decoding circuit 326 are the same as the operation of the conventional circuit of this type, detailed description thereof will be omitted.

Further, in FIG. 5, when the decoding means 32 of FIG. 4 is used as the decoding means 32 of FIG. 1, an encoded signal (document) from the encoded document storage means 70 to the decoding means 32.
3 is a time chart showing a temporal flow of processing from transfer of data to recording thereof (that is, memory recording processing).

In FIG. 5, reference numerals 1, 2, ..., E-1, E denote lines in each page of the document, for example, 1 is the head line of a page, and decoding is one-dimensional. The code MH system (that is, the reference line is unnecessary) is adopted.

First, between time t1 and t2, the coded document storage means 70 for the coded signal (document) of the first line 70
To the decoding means 32, and at the same time, the decoding means 32 decodes the input coded signal (document) in real time and writes the decoded image signal in the decoding line memory. Continuing, time t2-t3
In the meantime, this time, transfer to the decoding means 32 of the second line and real-time decoding by the decoding means 32 are performed, and at the same time, from the decoding means 32 of the image signal of the first line to the recording image quality improving means. After being transferred to 50 and the transferred image signal is made to have a high image quality in real time by the recording image quality improving means 50, it is transferred to the recording means 60 for recording. Hereinafter, from time t3 to t4, time te-
The same operation is performed between tees, and the transfer of the encoded signal to the decoding means 32 and the decoding in the decoding means 32 are completed for one page at time te, and the recording image quality improving means 5
The transfer of the image signal to 0 and the recording by the recording means 60 are completed for one page at time tee. In this case, if the decoding processing time including the transfer time of the encoded signal (document) per line is less than or equal to the recording time per line, the recording speed is tracked as shown in the time chart of FIG. All the lines can be decoded. That is,
It is possible to realize high-speed recording at a constant speed by using the three line memories 322 to 324 in the decoding means 32 without providing a page memory between the recording image quality improving means 50 and the decoding means 32. ..

Further, the time charts of the encoding process and the decoding process of this embodiment shown in FIGS. 3 and 5 are common to each embodiment described below.

Next, FIG. 6 is a block diagram showing a second embodiment of the facsimile apparatus according to the present invention.

In this embodiment, the number of image buses 1 is one,
Output of reading image quality improving means 20, recording image quality improving means 5
The input of 0, the input of the encoding means 31, and the output of the decoding means 32 are all different from the configuration of the first embodiment only in that they are connected to the image bus 1.
The other structure is the same as that of the first embodiment.

The operation of this embodiment is the same as that of the image bus 1 described above.
Via the reading image quality improving means 20 to the encoding means 3
1, the image signal is transferred from the decoding means 32 to the recording image quality improving means 50, and the other operations are the same as those of the first embodiment. The above description is omitted.

In this embodiment, when the operation for performing the encoding process and the decoding process, for example, the memory reading operation and the memory recording operation are executed at the same time, the number of the image buses 1 is one. High-speed transfer of image signals is image bus 1
Will occur above. For this reason, although there is a drawback that a high-speed image bus is required as compared with the first embodiment, the reading image quality improving means 20 and the recording image quality improving means 50 are provided.
And a large-scale integrated circuit configuration as the image quality improving means 21 indicated by the dotted line in the figure (to be an LSI), and / or the encoding means 31 and the decoding means 32 are encoded and decoded by the dotted line in the figure. When an LSI is used as the means 30, there is an effect that the number of pins can be reduced.

Next, FIG. 7 is a block diagram showing a third embodiment of the facsimile apparatus according to the present invention.

In this embodiment, the first code bus 3a and the second code bus 3b are provided, and the first coded document storage means 71, the second coded document storage means 72 and the first code transfer are provided. Means 111 and second code transfer means 112 are provided, the output of the encoding means 31 is connected to the first code bus 3a, and the input of the decoding means 32 is connected to the second code bus 3b. Further, the first coded document storage means 71 and the first code transfer means 111 are connected to the first code bus 3a,
The configuration is different from that of the first embodiment only in that the second coded document storage means 72 and the second code transfer means 112 are connected to the second code bus 3b, but other configurations are the same. The configuration is the same as that of the first embodiment.

Further, in the operation of this embodiment, the first code transfer means 111 causes the first code bus 3a to transmit the encoded signal (document) from the encoding means 31 to the first encoded document storage means 71. ) Is transferred and the first encoded document storage means 71 is transmitted via the first encoded bus 3a and the system bus 2.
The coded signal (document) is transferred from the communication unit 90 to the filing unit 120. In addition, the second code transfer means 112 includes the system bus 2 and the second code bus 3.
The coded signal (document) is transferred from the communication means 90 or the filing means 120 to the second coded document storage means 72 via b, and the second coded document storage means is transferred via the second code bus 3b. The operation is different from the operation of the first embodiment in that the encoded signal (document) is transferred from 72 to the decoding means 32, but the other operation is the same as that of the first embodiment. , Further description is omitted.

In this embodiment, the code bus is divided into the first code bus 3a for coding and the second code bus 3b for decoding, so that the coding process and the decoding process are performed. When the two operations for executing the code bus, for example, the memory read operation and the memory recording operation are simultaneously executed, the code bus 3 is not divided into two as compared with the first embodiment. There is an effect that the loads on 3a and 3b are reduced, and accordingly high-speed processing is possible.

Next, FIG. 8 is a block diagram showing a fourth embodiment of the facsimile apparatus according to the present invention.

In this embodiment, a dual port RAM is used as the coded document storage means 70, one port is connected to the code bus 3 and the other port is connected to the system bus 2, and the code bus 3 and the system are connected. The structure is different from that of the first embodiment only in that the structure can be accessed from both of the buses 2, but other structures are the same as those of the first embodiment.

The operation of this embodiment is performed by the code transfer means 1
10 transfers the encoded signal (document) between the communication means 90 or the filing means 120 and the encoded document storage means 70 directly from the system bus 2 without passing through the code transfer means 110. Therefore, in the memory transmitting operation, the memory filing operation, the memory receiving operation, and the file reading operation, the encoded signal (document) does not flow through the code bus 3, so that any one of the above operations and the code bus 3 In the case where the operation of using the code is performed at the same time, for example, the memory read operation is performed at the same time, the load on the code bus 3 is considerably reduced, and accordingly, high-speed processing is possible.

Next, FIG. 9 is a block diagram showing a fifth embodiment of the facsimile apparatus according to the present invention.

In this embodiment, a dual port RAM is used as the document management information storage means 80, and one port is connected to the code bus 3 and the other port is connected to the system bus 2, respectively. The structure is different from that of the first embodiment only in that the structure can be accessed from both of the buses 2, but the other structures are the same as those of the first embodiment.

The operation of this embodiment is performed by the code transfer means 1
10 inputs the transfer destination address of the encoded signal (document) of the encoded document storage means 70 from the document management information storage means 80 via the code bus 3, and executes the transfer of the encoded signal (document). For example, when the encoded signal (document) is transferred from the encoding means 31 to the encoded document storage means 70, the control means 100 of the code transfer means 110 has the system bus 2 in advance.
The transfer destination address of the encoded signal (document) set in the document management information storage means 80 is obtained via the code bus 3 and the encoded signal (document) is transferred to the address. In this case, when a code amount of 64 kilobytes as an encoded signal (document) for one page is transferred to a plurality of memory blocks each having a storage capacity of 8 kilobytes, it is necessary to transfer it to eight memory blocks. However, the control unit 100 determines the start address of each memory block.
If it is set in advance in the document management information storage means 80 before the reading is started, the code transfer means 110 successively transfers the transfer destination addresses of the memory blocks of the transfer destinations from the document management information storage means 80 via the code bus 3. Obtain and execute the transfer of the encoded signal (document). Therefore, the control means 100
Since it is not necessary to set the transfer destination address to the code transfer means 110 during the memory reading operation, the load on the control means 100 during the memory reading operation is reduced, and the memory reading operation can be realized at high speed. The same effect can be obtained in the memory recording operation.

Next, FIG. 10 is a block diagram showing a sixth embodiment of the facsimile apparatus according to the present invention.

In this embodiment, instead of the reading means 10 and the reading image quality improving means 20 in the first embodiment, a scanner 11 and a scanner interface (I / I) are used.
F) 22 is the recording image quality improving means 5 in the first embodiment.
0, instead of the recording means 60, the printer I / F 5
1, the printer 61, the document management information storage means 80, the communication means 90, the filing means 12 in the first embodiment.
0, the personal computer I / F 170 and the personal computer 300 are used in place of the panel 130, and other configurations are the first.
Is the same as that of the embodiment.

The scanner 11 scans the original and outputs an image signal, and the scanner I / F 22 inputs and outputs an image signal and a control signal. The printer 61 records an image signal, and the printer I / F 51 inputs and outputs an image signal and a control signal. In addition, the personal computer 300 executes communication with the outside and filing, and the personal computer I / F 17
0 is DPRAM method, LAN method, RS2
32C and the like. In the case of the DPRAM method, the communication path 4 is a bus inside the personal computer.

This embodiment is basically the same as the following 2
Perform one action.

.. Scanner Input First, when a scanner input command is supplied from the personal computer 300 via the personal computer I / F 170, the control means 100
In response to this command, outputs a processing command to the scanner 11 via the scanner I / F 22. Next, when the scanner 11 receives this processing command, it scans the document and outputs an image signal. The image signal obtained by the scanner 11 is input to the encoding unit 31 via the scanner I / F 22, the encoding unit 31 encodes the image signal, and the encoded signal (document) is encoded via the code bus 3. The converted document storage means 70 is transferred and accumulated. This accumulated coded signal (document) is
It is read out under the control of the code transfer means 110 and output to the personal computer I / F 170, and the personal computer I / F 170 transfers this encoded signal (document) to the personal computer 300.

.. Printer Recording First, when a printer recording command is supplied from the personal computer 300 via the personal computer I / F 170, the control means 100
Receives this command and issues a transfer command to the code transfer means 110. In response to this command, the code transfer means 110 transmits the coded signal (document) input from the personal computer 300 through the personal computer I / F 170 to the code bus 3 It is transferred and stored in the encoded document storage means 70 via. When the storage of the coded signals for one page or one document in the coded document storage means 70 is completed, the control means 100 outputs a recording command to the printer 61 via the printer I / F 51. Further, the decoding means 32 inputs the coded signal (document) to be recorded from the coded document storage means 70 and decodes the coded signal, and the image signal thus obtained is stored in the printer 61 via the printer I / F 51. It is output from the decoding means 32 following the speed.

According to this embodiment, the personal computer 30 is provided with the encoded document storage means 70 capable of storing encoded signals of one page or more.
Since it is arranged so as to be coupled to the code bus 3 which is different from the 0 bus, there is an effect that the reading operation and the recording operation at a high speed at a high speed can be executed without giving a load to the personal computer 300 without using a page memory. is there.

FIG. 11 is a block diagram showing the seventh embodiment of the facsimile apparatus according to the present invention.

In this embodiment, the communication means 9 is connected to the system bus 2.
The difference from the sixth embodiment is only in that 0s are connected, but the other structures are the same as those in the sixth embodiment.

The operation of this embodiment is the same as that of the sixth embodiment with respect to the scanner input operation and the printer recording operation. In addition, this embodiment can perform the transmission and reception operations described below.

.. Scanner Transmission This operation is an operation unit that encodes the image signal obtained by the scanner 11 and then transmits the image signal using the communication unit 90. This operation sends a scanner transmission command to the personal computer 30.
First, except that the operation is started by input from 0
The above-mentioned facsimile (F
Since it is almost the same as the (AX) transmission, detailed description thereof will be omitted.

.. PC Transmission This operation is an operation means for transmitting, by the communication means 90, an encoded signal (document) supplied from a filing means (not shown) in the personal computer 300 via the personal computer I / F 170. There are two operations as follows.

One of them is to transfer the coded signal (document) supplied via the personal computer I / F 170 directly to the communication means 90 and transmit it. The adoption of this is effective when the transmission speed of the communication line is slower than the transfer speed of the personal computer I / F 170.

In the second embodiment, the coded signal (document) supplied via the personal computer I / F 170 is transferred to the coded document storage means 70 and temporarily stored therein, and then the first embodiment is performed. Perform the above mentioned memory transmission. This is adopted when the communication line transmission speed is PC I / F17.
This is effective when the transfer rate is faster than 0.

.. PC reception This operation is an operation means for transferring and accumulating the encoded signal (document) received by the communication means 90 to the filing means in the PC 300. This operation also has the following two operations.

One of them is to transfer the coded signal (document) received by the communication means 90 directly to the personal computer 300 via the personal computer I / F 170 and perform filing there. The adoption of this is effective when the transmission speed of the communication line is slower than the transfer speed of the personal computer I / F 170.

The other is after transferring the coded signal (document) received by the communication means 90 to the coded document storage means 70 and temporarily storing it (this operation is performed in the first embodiment 1). The same as the above-mentioned memory reception), the encoded signal (document) stored in the encoded document storage means 70 is sent to the personal computer I.
The data is transferred to the personal computer 300 via the / F170 and is then filed. The adoption of this is effective when the transmission speed of the communication line is higher than the transfer speed of the personal computer I / F 170.

According to this embodiment, the personal computer I / F 170
Even if the transfer rate of the encoded signal (document) is slower than the transfer rate of the communication line, there is an effect that it is possible to realize the transmission communication using the communication path 100% effectively.

Next, FIG. 12 is a block diagram showing an eighth embodiment of the facsimile apparatus according to the present invention.

The present embodiment is different from the seventh embodiment in that the control means 100 is removed, the system bus 2 is changed to a personal computer bus, and the personal computer I / F 170 is changed to a bus I / F 171. Only the configuration is different from that of the seventh embodiment, but the other structure is the same as that of the seventh embodiment.

Further, the operation of this embodiment is performed by the personal computer 300.
Except that the personal computer bus is controlled directly via the bus I / F 171, the operation is the same as that of the seventh embodiment, and therefore a detailed description thereof will be omitted.

According to the present embodiment, since the control means 100 is omitted, there is an effect that the system can be constructed inexpensively and in a small size.

[0105]

According to the present invention, at least one code bus 3 separate from the system bus (personal computer bus) 2,
At least one coded document storage means 70 connected to the code bus 3 capable of storing coded signals (documents) for one page or more is provided, and the coding means 31, the decoding means 32, and the coded document storage means 70 are provided. Since a coded signal (document) for one page or more can be input and output at high speed via the code bus 3, the system for coding the read image signal and / or the coding In a system that decodes a signal (document) into an image signal and records the image signal, the original is read and encoded at a constant speed at a high speed and / or the encoded signal is decoded without using a page memory. Thus, there is an effect that recording can be performed at a constant speed due to high speed.

Further, the code bus 3 and the coded document storage means 7
By adopting 0, since the encoded signal (document) does not always flow on the system bus (personal computer bus) 2, the load on the system bus 2 can be considerably reduced and the throughput of the entire system can be increased. effective.

[Brief description of drawings]

FIG. 1 is a block configuration diagram showing a first embodiment of a facsimile apparatus according to the present invention.

FIG. 2 is a block configuration diagram showing details of encoding means of the present invention.

FIG. 3 is a time chart showing processing performed by each unit from reading to encoding.

FIG. 4 is a block configuration diagram showing details of a decoding means of the present invention.

FIG. 5 is a time chart showing processing performed by each unit from decoding to recording.

FIG. 6 is a block diagram showing a second embodiment of the facsimile apparatus according to the present invention.

FIG. 7 is a block configuration diagram showing a third embodiment of the facsimile apparatus according to the present invention.

FIG. 8 is a block diagram showing a fourth embodiment of the facsimile apparatus according to the present invention.

FIG. 9 is a block diagram showing a fifth embodiment of the facsimile apparatus according to the present invention.

FIG. 10 is a block diagram showing a sixth embodiment of the facsimile apparatus according to the present invention.

FIG. 11 is a block diagram showing a seventh embodiment of the facsimile apparatus according to the present invention.

FIG. 12 is a block configuration diagram showing an eighth embodiment of the facsimile apparatus according to the present invention.

FIG. 13 is a block diagram showing an example of a conventional image processing system.

FIG. 14 is a block diagram showing another example of a conventional image processing system.

FIG. 15 is a configuration diagram showing an outline of an entire structure of a facsimile apparatus.

[Explanation of symbols]

 1, 1a, 1b Image bus 2 System bus 3, 3a, 3b Code bus 10 Reading means 11 Scanner 20 Read image quality improving means 22 Scanner interface (I / F) 31 Encoding means 32 Decoding means 50 Recording image quality improving means 51 printer interface (I / F) 60 recording means 61 printers 70, 71, 72 encoded document storage means 80 document management information storage means 90 communication means 100 control means 110, 111, 112 code transfer means 120 filing means 130 panel 140 display Control means 150 Display memory 160 Display means 170 Personal computer interface (I / F) 171 Bus interface (I / F) 300 Personal computer

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Kazuhiko Takaoka 216 Totsuka-cho, Totsuka-ku, Yokohama-shi, Kanagawa Inside the Totsuka Plant, Hitachi Ltd. (72) Inventor Kagehiro Yamamoto 216 Totsuka-cho, Totsuka-ku, Yokohama Hitachi, Ltd. Totsuka Factory

Claims (17)

[Claims] 1. An image signal processing system in which an image signal obtained by scanning a document is supplied to an encoding means via an image bus and the encoded signal obtained there is supplied to a system bus. A code bus is provided on the output side of the code bus, and coded document storage means for temporarily storing the output coded signal of the coding means is coupled to the code bus, and the code bus is provided between the code bus and the system bus. A code transfer means for inputting and outputting a coded signal to the coded document storage means and for transferring a coded signal of the code bus to a system bus is arranged, and the control means for controlling the entire system on the system bus and the coding A high-speed image signal processing system characterized by being combined with a document management information storage means for storing document management information for managing a stored document in the document storage means. 2. The encoding means converts an image signal of one scanning line into an encoded signal and outputs the image signal within a time required to generate an image signal of at least one scanning line, and 2. The high-speed image according to claim 1, wherein the code transfer means transfers an encoded signal for one scanning line from the output of the encoding means to the encoded document storage means within the required time. Signal processing system. 3. The time required to generate the image signal for one scanning line is constant.
The described high-speed image signal processing system. 4. An image signal processing system, wherein an encoded signal is supplied from a system bus to a decoding means, and an image signal obtained there is supplied to a recording means via an image bus.
A code bus is provided on the input side of the decoding means,
A coded document storage means for temporarily storing a coded signal is coupled to the code bus, and the coded signal is input to and output from the coded document storage means between the system bus and the code bus. Code transfer means for transferring the coded signal of the bus to the code bus is arranged, and control means for controlling the entire system on the system bus and document management information for managing documents stored in the coded document storage means are stored. A high-speed image signal processing system characterized by being combined with a document management information storage means. 5. The decoding means decodes a coded signal for one scanning line within a time required to record an image signal for at least one scanning line, and the code transfer means comprises: 5. The high-speed image signal processing system according to claim 4, wherein the coded signal for one scanning line is transferred from the coded document storage means to the decoding means within a required time. 6. The time required to record the image signal for one scanning line is constant.
The described high-speed image signal processing system. 7. An image signal obtained by scanning a document is supplied to an encoding means via an image bus, the encoded signal obtained there is supplied to a system bus, and the encoded signal is decoded from the system bus. In the image signal processing system for supplying the image signal obtained by the encoding means to the recording means via the image bus, a common code bus is provided on the output side of the encoding means and the input side of the decoding means. A coded document storage means for temporarily storing a coded signal is provided to the code bus, and the coded signal is input to and output from the coded document storage means between the code bus and the system bus. At the same time, code transfer means for transferring the coded signal of the code bus to the system bus and transferring the coded signal of the system bus to the code bus is arranged. A high-speed image signal processing system characterized in that a control means for controlling the entire system and a document management information storage means for storing document management information for managing the stored document of the encoded document storage means are connected to the system bus. 8. The high-speed image signal processing system according to claim 7, wherein a common image bus is provided on the input side of said encoding means and the output side of said decoding means. 9. A first code bus is provided on the output side of said coding means, and a first coded document storage means for temporarily storing a coded signal is coupled to said first code bus, said first code bus being connected to said first code bus. First code transfer means for inputting / outputting the coded signal to / from the first coded document storage means and transferring the coded signal of the code bus to the system bus between the code bus and the system bus. And a second code bus is provided on the input side of the decoding means, and a second coded document storage means for temporarily storing a coded signal is coupled to the second code bus. Between the code bus and the system bus, the second code is input and output to and from the second coded document storage means, and the coded signal of the system bus is transferred to the second code bus. That the code transfer means is arranged The high-speed image signal processing system according to claim 7. 10. The high-speed image signal processing system according to claim 1, wherein said coded document storage means is connected to both a code bus and a system bus. 11. The high-speed image signal processing system according to claim 1, wherein said document management information storage means is connected to both a code bus and a system bus. 12. Communication means for transmitting to the system bus an encoded signal of the system bus to a communication line and receiving the encoded signal from the communication line to output to the system bus; 8. The high-speed image signal processing system according to claim 1, further comprising a filing means for filing the encoded signal. 13. The high-speed image signal processing according to claim 1, wherein display means for displaying an image signal supplied to the recording means is arranged on the image bus on the output side of the decoding means. system. 14. The high-speed image signal processing system according to claim 7, wherein a personal computer is connected to the system bus via an interface. 15. A personal computer is coupled to the system bus via a communication means and an interface for transmitting an encoded signal to a communication line and receiving the encoded signal from the communication line and outputting the encoded signal to the system bus. The high-speed image signal processing system according to claim 7, wherein 16. The system bus is a personal computer bus, and the personal computer bus transmits the encoded signal of the personal computer bus to a communication line and receives the encoded signal from the communication line and outputs the received personal computer bus to the personal computer bus. 8. The high-speed image signal processing system according to claim 7, wherein the communication means for performing the operation is connected to a personal computer through an interface. 17. An image signal obtained by scanning a document is supplied to a coding means, the coded signal obtained there is supplied to a communication line via a system bus, and a code received by the communication line. In a facsimile apparatus that supplies a coded signal to a decoding means via a system bus and records the decoded image signal therein, a common code bus is provided on the output side of the coding means and the input side of the decoding means. A coded document storage means for temporarily storing a coded signal is provided to the code bus, and the coded signal is input to and output from the coded document storage means between the code bus and the system bus. At the same time, code transfer means for transferring the coded signal of the code bus to the system bus and transferring the coded signal of the system bus to the code bus is arranged. A facsimile machine characterized in that a control means for controlling the entire system and a document management information storage means for storing document management information for managing the stored document of the encoded document storage means are connected to the system bus.