JPH01314471A - Image processing device - Google Patents

Abstract

PURPOSE:To make a special large capacity memory for combining pages unnecessary by compressing image data to be combined with a document, storing the compressed image data, and combining both data under a phase in which the data are restored data. CONSTITUTION:An input switching means 1 to receive an instruction for combining the pages switches an input change-over switch to the side of a restoring part 15. Next, a main control part 14 outputs a compression instructing signal 26, a restoration instructing signal 24, and a reading instructing signal 25. A compression means 22 to receive the compression instructing signal 26 sets control information, which is necessary for compressing the image data, to a compressing part 17 and transfers compressed data outputted from the compressing part 17 to a combined compressed data storing part 6. A restoration control means 20 to receive the restoration instructing signal 24 sets other control information, which is necessary for referring to a picture information storing part 19 and restoring the data, to a restoring part 15, transfers the compressed data from a compressed data storing part 5, and inputs the transferred compressed data to the restoring part 15. Thus, the compressed data of an overlay-combined document can be obtained in the combined compressed data storing part 6.

Description

[Detailed description of the invention]

[Industrial Field of Application] The present invention relates to an image processing device such as a facsimile machine, which is suitable for adding an address to a document. [Prior Art] Facsimile machines, which have become rapidly popular in recent years, have a function that automatically adds various types of sender information indicating communication date and time, sender, etc. to the leading edge of a transmitted document. There are many things that are. This type of information is extremely useful in understanding the communication status, but taking into account the organization and distribution of received manuscripts by the receiving operator, it is desirable that the destination of the received manuscripts is clear. . Conventional facsimile machines have responded to such demands by the following methods. In other words, the transmitting operator writes the recipient's address in the margin of the transmitted document each time it is sent, and transmits this from the transmitting terminal to the receiving terminal using the normal communication control procedure, and the receiving operator records the reception using the receiving terminal. By confirming the received address, the received manuscript is distributed to the addressee. Also, instead of writing the addressee, prepare a separate address manuscript with the addressee recorded in advance, and send the addressee manuscript together with the transmission manuscript from the sending terminal, and do the same as the transmission manuscript. There was also a method of having the receiving terminal record the reception. However, these methods are accompanied by the hassle of the operator writing in the recipient's address each time the recipient is sent, and by the increased transmission processing time due to reading the recipient's manuscript. Furthermore, when sending a message to multiple recipients with a single reading operation, it is necessary to read the addresses of multiple sheets corresponding to the multiple recipients, making it impossible to send addresses using the above-mentioned method. Ta. Therefore, recently, address information (character code data, etc.) registered using an input device such as a keyboard is linked to the recipient's telephone number and stored in advance, and when sending, the character code data is converted to dot image information. A method is used in which the information is automatically added to the transmission document image information read by a reading device such as a scanner and sent out over a line. This method will be explained using the block diagram of FIG. Third
In the figure, 3 is a reading processing unit that performs reading and scanning processing of the original; 4 is a compression processing unit that performs compression processing of original line data;
6 is a combined compressed data storage unit that stores M products of compressed data in which pages are combined; 7 is an original image data transfer unit that transfers original image line data; and 8 is original image data corresponding to the paper size for developing address information. 9 is a character pattern storage unit such as a character generator; 10 is address information (
Character code data storage unit that stores character codes (such as character codes),
43 is a network control unit (NCU).
44 is a line, 45 is a keyboard, and 46 is a synthesis section. Address information registered using an input device such as the keyboard 45 is stored in the character code data storage section IO. When starting the transmission process, the character code stored in the character code data storage section 10 is expanded as dot image information on the original image data storage section 8 with reference to the character pattern storage section 9. This expansion process is repeated, and after the original image data of the addressee is expanded, the reading processing section 3 starts processing, whereby the read and scanned line data is compressed by the compression processing section 4 via the synthesis section 46. When this reading scan advances to the address combining position, the original image data transfer section 7 sends the top line data of the original image to the combining section 46 starting from the top line data. This line data is combined with the line data from the reading processing section 3 in the combining section 46, and sent to the compression processing section 4, where it is compressed. Note that related devices of this type include, for example, Japanese Unexamined Patent Publication No. 52-92675. The second method is to read an address document with address information written in advance using a reading device such as a scanner, perform one-dimensional encoding (MH encoding) as described later, store it in memory, and add it to the beginning of the document. There is a way to do it. Such a system is disclosed in, for example, Japanese Patent Laid-Open No. 111473/1983. [Problems to be Solved by the Invention] The problems of the above-mentioned prior art will be described below. In the first conventional method, the character code is stored as address information in the character code data storage unit 1o, and in order to develop this character code data into original image data, a large capacity buffer memory is used as the original image data storage unit 8. is required, which significantly increases costs. Furthermore, since the amount of data to be handled is large, processing time increases. Furthermore, with this method, it is difficult to add arbitrary graphic dot images, such as a company logo, to the address. In the second conventional method, it is not possible to add an arbitrary graphic dot image to the address, and the known method has problems as described below. CCITT recommends three methods for encoding image information. The MH encoding method, which is a -dimensional encoding method, reduces redundancy by converting an image signal into information (compressed data) representing one, for example, a white or black pixel or a continuous length (run length). The two-dimensional encoding method focuses on the strong correlation between two adjacent scanning lines when compressing an image signal. The change point of the signal value (the pixel where the signal changes from white to black or from black to white) is expressed as -
In this method, a scanning line of a wooden tablet is used as a reference line and is converted into information (compressed data) representing the relative positional relationship between this reference line and a point of change in signal value. The two-dimensional encoding method has excellent compression efficiency, or because it uses the previous line as the reference line,
If a restoration error occurs, it becomes impossible to restore the next line. Therefore, in the MR encoding method, every predetermined number of lines K (2 or 4 in the CGITT recommendation) is subjected to one-dimensional encoding, and the other lines are two-dimensionally encoded. In this method, the -dimensionally encoded line is used as a resynchronization line when a transmission error occurs, and image disturbance is kept to the maximum on the line. However, recently, it has become possible to use lines in which transmission errors are less likely to occur, so it has become possible to use an MMR encoding method in which all lines are compressed using a two-dimensional encoding method. If the addressee is compressed using a one-dimensional encoding method, the end-of-page code CRTC code, which exists at the end of the compressed data and means the end of one page of compressed data:
Return To Control1, EOFB code:
End of Facsimile Block, etc.) and store the compressed data obtained by compressing the line data of the transmitted document from that address (Japanese Patent Laid-Open No. 5
8-111473) is compressed using a two-dimensional encoding method, it is often not possible to process it easily. In other words, in the case of the MR encoding method. If the first line of the transmitted manuscript happens to be a line to be one-dimensionally encoded, it can be processed in the same way as in the above-mentioned -dimensional encoding method, but when the first line of the transmitted manuscript is a line to be two-dimensionally encoded, The last line of the address must be compressed as a reference line for the first line of the transmission document. To do this, the resynchronization line closest to the last line of the compressed address data (in the MR encoding system, the one-dimensional encoded line) must be compressed. ,
In the MMR encoding method, the data must be restored starting from the first address line with the virtual white line as a reference line. Furthermore, the document profile of the pages to be combined (paper size, sub-scanning line resolution, etc., stored and managed as image information for each page or multiple pages of compressed data)
When the images are different, image processing such as enlargement and reduction must also be performed. Additionally, if the address is added to the beginning of the document (additional merging) as shown in Figure 4, for example, if the receiving terminal uses cut paper as recording paper, the document may be cut in the middle. be. For this reason, as shown in FIG. 5, it is desirable that the process of overlaying the address at the top of the document (overlay combining) can be used together with the additional combining process. Also, in this overlay combination, it may be desirable to replace the addressee with the document content rather than composing it with the document content. The present invention has been made in view of the above circumstances, and provides an image processing device that can perform the various desired merging processes described above without requiring a special large-capacity memory for merging pages. The purpose is to

[Means to solve the problem]

To achieve the above object, as shown in FIG. 1, an image processing apparatus includes a reading processing section that reads and scans a document, and a compression processing section that compresses line data. , a compressed data storage unit that stores compressed data, and a restoration processing unit that restores the compressed data;
The present invention is characterized by further comprising input switching means for selecting line data from the restoration processing section or the reading processing section and inputting it to the compression processing section. In an image processing apparatus according to a second aspect of the invention, the reading processing section in the invention according to the first aspect can perform read-discard control or read-skip control in synchronization with the restoration processing of the restoration processing section. An image processing apparatus according to claim 3 is an image processing apparatus comprising a reading processing section that reads and scans a document, and a compression processing section that compresses line data, and a compressed data storage section that stores compressed data; The present invention is characterized in that it includes a restoration processing section that restores data, and a logic operation section that combines line data from the restoration processing section or the reading processing section and inputs the synthesized line data to the compression processing section. An image processing apparatus according to a fourth aspect of the present invention includes first and second compressed data storage units that store compressed data, and first and second compressed data storage units that restore compressed data in the first and second compressed data storage units, respectively. The apparatus is characterized by comprising a restoration processing section, and input switching means for selecting line data from the first and second restoration processing sections and inputting it to the compression processing section. An image processing device according to a fifth aspect of the present invention includes first and second compressed data storage units that store compressed data, and first and second compressed data storage units that restore compressed data in the first and second compressed data storage units, respectively. The compression processing unit is characterized by comprising a restoration processing unit, and a logic operation unit that synthesizes line data from the first and second restoration processing units and inputs the synthesized line data to the compression processing unit. An image processing apparatus according to a sixth aspect of the present invention provides an enlargement/reduction process J! that performs enlargement/reduction processing of the line data between the input switching means or logic operation section and the compression processing section according to the first to fifth aspects. ! It is characterized by having a section. A facsimile apparatus according to a seventh aspect is characterized in that the image processing apparatus according to any one of claims 1 to 6 is provided with line tT)J control means for transmitting data compressed by the compression processing section onto a communication line. That is. The decompressor of claim 8 is a decompressor that decompresses compressed page data, and includes first and second decompressing units that decompress the compressed page data, and from the first and second decompressing units. and input switching means for switching and outputting the input. A decompressor according to claim 9 is a decompressor that decompresses compressed page data, and includes first and second decompression processing units that decompress compressed page data, and from the first and second decompression processing units. The device is characterized by comprising a logic operation unit that synthesizes and outputs the inputs of. A compressor according to a tenth aspect of the present invention is a compressor for compressing line data, comprising an input switching means for switching and outputting the first and second inputs, and a compression processing section for compressing the input line data switched by the input switching means. It is characterized by having the following. [Operation] The basic operation of the present invention will be explained with reference to FIG. 1, taking as an example a case where an address is overlaid at the beginning of a document to be read and sent to a communication line. First, the image data of the addressee is compressed and stored in the compressed data storage unit 5 in advance. This process is performed by compressing data obtained by reading a document containing the addressee using a reading device or data created by a data processing device. This can be done by With the start of the transmission process, the input switching means 1 inputs the input to the decompression processing part 2.
Restore compressed data within. The restored line data is input to the compression processing section 4 via the input switching means 1. The input line data is compressed by the compression processing section 4 and stored in the combined compressed data storage section 6. After this accumulation,
It is sent to line 44. During this time, the reading processing section 3 reads and scans one line of the transmission document in synchronization with the restoration of one line by the restoration processing section 2. Since the read line data is not specified by the input switching means 1, it is not input to the compression processing section 4 and is discarded. The reading processing unit 3 may perform reading skipping instead of this reading-discarding control. After the restoration processing section 2 finishes the restoration processing, the input switching means l
assumes that the input is the reading processing section 3. Thereafter, the line data read and scanned by the reading processing section 3 is compressed by the compression processing section 4 via the input switching means 1. This compressed data is stored in the combined compressed data storage section 6 and then sent to the line 44. In this way, the destination address or document is overlaid with some of its contents replaced. When performing additional combination instead of overlay combination, it is sufficient to perform the combination without performing the above-mentioned discarding or skipping by the reading processing unit 3. - As described above, according to the present invention, the image data to be combined into a document is compressed and stored, so a large capacity page memory is not required, and the combination of both data is performed at the stage of the restored data. However, in the subsequent compression in the compression processing unit 4, any encoding method can be adopted. In place of the input switching means 1, if a logic operation section is provided for synthesizing the read data of the document and the data from the restoration processing section 2, an overlay combination of the two contents can be performed. When combining the contents of multiple compressed data storage units 5,
The present invention can be applied by providing a second compressed data storage section and a restoration processing section in place of the reading processing section. [Example] Specific examples according to the present invention will be described below with reference to the drawings. FIG. 2 shows an apparatus configuration for implementing the page combination processing method according to the present invention. In the figures below, Figures 2 and 8
Identical parts in the figures and FIG. 10 are given the same reference numerals. In FIG. 2, 14 is a main control unit, 15 is a restoration unit that restores input compressed data, 16 is a reading unit that reads and scans a document, and ■ is an input switching unit that switches input between the restoration unit 15 and the reading unit 16. , 18 are the restoration unit 15. A line memory for matching the image information transfer speed between the reading section 16 and the compression section 17, 17 a compression section for compressing original image line data, 5 a compressed data storage section for storing compressed image data, and 6 a combination. a combined compressed data storage section for storing M products of compressed image data; 19;
20 is an image information storage unit that stores information such as the paper size, sub-scanning line density, storage encoding method, etc. of the compressed image data stored in the compressed data storage unit 5; 20 is a control necessary for the restoration unit 15 to restore the data; After setting the information, a restoring control means inputs the compressed data to the restoring section 15; 21 is a reading control means for causing the reading section 16 to read and scan; 22 is a means for setting the control information necessary for compression in the compressing section 17, and then compressing the data; Compression control means for outputting data from the compression unit 17; 24, a restoration instruction signal that instructs to start restoration; 25, a reading instruction signal that instructs to start reading; 26, a compression instruction signal that instructs to start compression; 27, the restoration unit 15 to 1
A restoration control signal instructing line restoration; 28 is a reading unit 16;
29 is a compression control signal that instructs the compression unit 17 to read one line; 23 is an input switching signal that instructs the input switching means l to input the input direction; Restoration end signal indicating the end of restoration, 4
1 is a page restoration end signal indicating the end of restoration of one page; 4
2 is a page reading end signal indicating the end of reading one page. In this embodiment, the line memory 18 and the compression section 17 constitute the compression processing section 4 shown in FIG. FIG. 6 is a block diagram showing the input switching means 1, in which the input switching signal 23 from the main control section 14 is input to the restoration section 1.
5, the input changeover switch 31 is moved to the restoring section 15 side, and when the reading section 16 is specified as the input, the input changeover switch 31 is moved to the reading section 16 side. The page overlay combining process of this embodiment will be explained below using the flowchart shown in FIG. 7(a) is a flowchart showing the processing of the main control unit 14, FIG. 7(b) is a flowchart showing the processing of the restoration control means 20, and FIG. 7(C) is a flowchart showing the processing of the reading control means 21. , FIG. 7(d) shows the compression control means 22.
3 is a flowchart showing the processing of FIG. As shown in FIG. 7(a), first it is determined whether or not to perform page merging (step 101). If it is determined that page merging is to be performed, the main control section 14 converts the input to the restoring section using the input switching signal 23. 15 (step 102). The input switching means 1 that received the instruction,
The input switch 31 shown in FIG. 6 is moved to the restoring section 15 side. Next, the main control unit 14 outputs a compression instruction signal 26, a restoration instruction signal 24, and a reading instruction signal 25.Step 10
3) Wait for input of page restoration end signal 41 (step 104). Upon receiving the compression instruction signal 26, the compression control means 22 sets the control information necessary for compression, such as the number of pixels per line to be compressed, in the compression unit 17, as shown in FIG. 7(d). Step 122) If line data to be compressed is stored in the line memory 18 (Step 123)
), the compression control signal 29 instructs the compression section 17 to compress one line (step 124), the compressed data output from the compression section 17 is transferred to the combined compressed data storage section 6 (step 125), and the compressed data is transferred to the combined compressed data storage section 6 (step 125). Repeat the transfer,
When the compression process for one line is finished (step 126), the page reading end signal 42 is not input (step 127), and the line data to be compressed is stored in the line memory 18 (step 123), the compression control is started again. signal 29
Step 1 instructs the compression unit 17 to compress one line.
24), perform the compressed data transfer (step 125)
. Upon receiving the restoration instruction signal 24, the restoration control means 20 refers to the image information storage unit 19 to determine the number of pixels per line to be restored, etc., necessary for restoration, as shown in FIG. 7(b). Set control information in the restoration unit 15 (step 109),
The restoration control signal 27 instructs the restoration unit 15 to restore one line (step 11O), and the compressed data is transferred from the compressed data storage unit 5 and input to the restoration unit 15 (step 11
1). The compressed data transfer is repeated, the restoration process for 1 line is completed (step 112), the restoration completion signal 30 is outputted (step 113), and if the page end code has not yet been detected (step 114), the restoration control is started again. The signal 27 instructs the restoring unit 15 to restore one line (step 11O), and the compressed data is transferred (step 1).
11). Upon receiving the reading instruction signal 25, the reading control means 21 selects whether the restoring section 15 or the one line In synchronization with the restoration completion signal 30 indicating that the restoration has been completed (step 117), the reading control signal 28 instructs the reading unit 16 to read one line (step 118). The line data read and scanned by the reading unit 16 is
Since the input changeover switch 31 shown in the figure is tilted toward the restoring section 15, the data is not stored in the line memory 18 but is discarded. Returning to FIG. 7(b), the restoration control means 20 continues the restoration process when a page end code is detected (step 114).
), outputs a page restoration end signal 41 (step 115). Moreover, the main control unit 14. As shown in f5T diagram (a), page restoration end signal 41
In response to this (step 104), the input switching means 1 is instructed to set the input to the reading section 16 using the input switching signal 23 (step 105).
The line data read and scanned by the reading section 16 when the input changeover switch 31 shown in FIG. 6 is shifted toward the reading section 16 side is , are sequentially stored in the line memory 18. The accumulated line data is compressed by the compression control means 22 regardless of whether the input is switched. As shown in FIG. 7(c), the reading control means 21 outputs a page reading end signal 42 (step 121) upon completion of reading to the end of the page (step 120). This page reading end signal 42 is received (step 127
) The compression control means 22 stores the page end code at the end of the compressed data in the combined compressed data storage section 6 (step 128), and the main control section 14 also receives the page reading end signal 42 (step 106) and starts overlaying the page. Finish the joining process. In this way, compressed data of overlay-combined documents as shown in FIG. 5 is obtained in the combined compressed data storage unit 6. Note that if it is determined in step 101 of FIG. 7(a) that the pages are not to be combined, the input is set to the reading unit 16 (step 107), and the compression instruction signal 26 is
and outputs a reading instruction signal 25. FIG. 8 shows a second embodiment in which an enlargement/reduction section 32 is added to the block diagram of FIG. 2, which is the basic component of the present invention. In the figure, 32 converts the input line data in the main scanning line and sub-scanning line directions according to the predetermined enlargement/reduction ratio (the horizontal direction of the original is called the main scanning line direction, and the vertical direction is called the sub-scanning line direction). 33 is the enlargement/reduction section that enlarges/reduces the
Enlargement/reduction control means that determines the reduction ratio and enlarges/reduces the line data input to the enlargement/reduction section 32; 34 is an enlargement/reduction instruction signal for instructing the start of enlargement/reduction; 35 is an enlargement/reduction instruction signal for the enlargement/reduction section 32; Enlarge/reduce to instruct one line enlargement/reduction
This is a reduction control signal. The main control section 14 instructs the input switching means 1 to input the input to the decompression section 15 using the input switching signal 23, and the compression instruction signal 26. It outputs a restoration instruction signal 24, a reading instruction signal 25, and an enlargement/reduction instruction signal 34, and waits for the input of a page restoration end signal 41. The compression control means 22, the restoration control means 2o, and the reading control means 21 perform the processes shown in FIGS. 7(d), (b), and (a), respectively. Upon receiving the enlargement/reduction instruction signal 34, the enlargement/reduction control means 33 converts the paper size and sub-scanning line density of the accumulated page compressed data obtained by referring to the image information storage section 19 into the combined compressed data storage. In order to convert the compressed data to be stored in the section 6 into paper size and sub-scanning line density, the enlargement/reduction ratio is determined, and the enlargement/reduction control signal 35 causes the enlargement/reduction section 32 to enlarge/reduce one line. Instruct. Upon receiving the page restoration end signal 41, the main control section 14 instructs the input switching means 1 to set the input to the reading section 16 using the input switching signal 23, and further outputs the enlargement/reduction instruction signal 34 again, and then displays the next page. The enlargement/reduction unit 32 is caused to set the enlargement/reduction ratio of . Thereafter, processing continues until the page end code is stored in the combined compressed data storage section 6. As a result, not only can the compressed data to be stored in the combined compressed data storage section 6 be expanded or reduced according to the paper size and sub-scanning line density, but also the paper size and sub-scanning line density of the address and document can be different. Even if there are multiple originals, each document can be processed at its own enlargement/reduction ratio. FIG. 9 is a flowchart showing a third embodiment of the present invention, and shows the processing of the main control unit 14 in the block diagram of FIG. 2 when an addressee is added to the leading edge of a document as shown in FIG. As shown in the flowchart of FIG. 9, the main control section 14 instructs the input switching means 1 to input the input to the restoration section 15 by the input switching signal 23 (step 1:10), compression instruction signal 26, restoration instruction signal 24 is output (step 131). In this embodiment, unlike the case of FIG. 7(a) (step 103), at this point the reading instruction signal 25
is not output. Next, waiting for the input of the page restoration end signal 41 (step 132), the compression control means 22 and the restoration control means 20 perform the processes shown in FIGS. 7(d) and 7(b), respectively. When the main control unit 14 completes the restoration process for one page (step 132), the main control unit 14 instructs the input switching means 1 to set the input to the reading unit 16 using the input switching signal 23 (step 133).
) After this, the reading instruction signal 25 is outputted to instruct the start of reading scanning (step 134), and the reading control means 21 is caused to perform the processing shown in FIG. 7(C). From then on,
Upon generation of the page reading end signal 42 (step 135
), the process continues until the page end code is stored in the combined compressed data storage unit 6. As a result, the compressed data of the additionally combined documents as shown in FIG. 4 is obtained in the combined compressed data storage unit 6. FIG. 1O is a block diagram showing a fourth embodiment of the present invention. In the first embodiment, the case where the address is stored as compressed data and the document is read and scanned is explained, but in the fourth embodiment, the case where both the address and the document are stored as compressed data is explained. I will explain about it. In FIG. 10, 5a is a destination compressed data storage unit;
Reference numeral 9a designates a destination image information storage unit, 5b a document compressed data storage unit, and 19b a document image information storage unit. Main control unit 1
4 instructs the input switching means 1 to select the input as the restoration unit 15a by the input switching signal 23, outputs the compression instruction signal 26, the restoration instruction signal 24a, and the restoration instruction signal 24b, and waits for the input of the page restoration end signal 41a. , compression control means 22,
The restoration control means 20a performs the processes shown in FIGS. 7(d) and 7(b), and the restoration control means 20b that receives the restoration instruction signal 24b performs the restoration control in synchronization with the restoration end signal 30 of the restoration section 15a. The signal 27b instructs the restoring unit 15b to restore one line. The restored line data is discarded without being stored in the line memory 18 because the input switching means 1 inputs it to the restoring section 15a. Upon receiving the page restoration end signal 41a, the main control unit 14 instructs the input switching means 1 to input the input to the restoration unit 15b using the input switching signal 23, and the line data restored by the restoration unit 15b is sequentially transferred to the line memory 18. is accumulated in Thereafter, processing continues until the page end code is stored in the combined compressed data storage section 6. As a result, it becomes possible to carry out broadcast transmission which requires storing the transmitted original as compressed data. In this embodiment, the input switching means 1 inputs the input to the restoring section 1.
5, the original line data is read and scanned and then discarded, but if the line is an unnecessary line as described above, the reading unit 16 can skip the line without reading it. This allows the processing load to be reduced. Furthermore, in the first embodiment, reading processing is executed in parallel with restoration processing, but if it is determined that the processing load is too heavy, first, only address restoration processing is performed and the number of restored lines is counted. Then, after the restoration process is completed, the document may be skipped in advance without reading the number of restoration lines, and then the reading operation may be started. Similarly, in the fourth embodiment, the address and document restoration processes are executed in parallel. First, only the address restoration process is performed and the number of restored lines is counted, and after the restoration process is completed, the original By performing the restoration process, discarding the number of restored lines of the address without storing it in the line memory 18, and transferring the line data after the number of restored lines of the address has been reached to the line memory 18, the restoration unit shown in FIG. ISa to 15b can be made unnecessary. Furthermore, in the block diagram, each storage section may be placed on either side for convenience of explanation, or may be stored at different addresses within the same storage section. Furthermore, although this embodiment has been described by taking as an example the combination of an addressee and a document, the present invention is not limited to the combination of an addressee and a document, but is applicable to the combination of arbitrary image information. Further, in this embodiment, processing is performed by switching between two types of inputs, but processing may also be performed by switching between two or more types of inputs. Further, although this embodiment shows the process of adding the addressee at the beginning of the document, it is also possible to add the addressee at any position on the document as shown in FIGS. 11 and 12. FIG. 13 shows a block diagram in which the logic operation section 39 is applied as the input switching means l. Reference numeral 40 denotes a line start position instruction signal that instructs from which position in the line memory 18 the input line data is written. Logical operation section 39
The logic wave 3! is applied to the line data from the restoring unit 15 and the line data from the reading unit 16. (logical sum, etc.) and stored in the line memory 18. The above operation enables a combination process as shown in FIG. 14. Furthermore, by instructing the line joining position using the line start instruction signal 40, it is also possible to perform joining processing to an arbitrary position as shown in FIG. The input switching means 1 may have both the input switching function shown in FIG. 6 and the logical operation function shown in FIG. 13, so that the operator can select one of the functions. Further, the input switching means 1 and the compression section 17 can be replaced with a compressor having line data input terminals for a plurality of channels and selecting and compressing one of the channels. Similarly, the logic operation section 39 and the compression section 17 are replaced with a compressor that has line data input terminals for multiple channels, performs processing such as logic operations on inputs from the channels, and synthesizes and compresses it into a single line. It is also possible. Furthermore, the restoring units 15a, 15b and the input switching means 1 in FIG. 1O may be replaced with a restoring device that has compressed data input terminals for a plurality of channels and selects and outputs one of the restored line data of each channel. is also possible. Similarly, the restoring units 15a and 15b and the logical operation unit 39 are
It is also possible to replace it with a restorer that has multiple channels of compressed data input terminals, performs processing such as logical operations on the restored line data of each channel, and synthesizes it into a single line for output. The case where combined compressed data is stored has been described above, but according to the present invention, when a document with an address added is transmitted using a facsimile machine. It is clear that this can be achieved by using the combined compressed data storage unit 6 as a transmission buffer and by sequentially sending the compressed data in the combined compressed data storage unit 6 to the serial line using a control means of the modem NCU (not shown). Furthermore, by using the modem NCU, it is also possible to combine received compressed data with information such as the date and time of reception. [Effects of the Invention] As explained above, according to the present invention, since pages are combined while restoring compressed data, large-capacity memory required to expand dot image information is not required, and the problem associated with page combination processing is eliminated. It is possible to prevent the cost increase of hardware expansion. In addition, even if there are differences in paper size, sub-scanning line density, storage encoding method, etc. between pages, density conversion processing is also performed between restoration processing and compression processing. It is also possible to generate beautiful images depending on the sub-scanning line density. Furthermore, since the amount of data handled is smaller than when handling original image data, processing time can be significantly saved.

[Brief explanation of the drawing]

Fig. 1 is a schematic block diagram of the device of the present invention, Fig. 2 is a block diagram of the first embodiment of the invention, Fig. 3 is a schematic block diagram of a conventional device, and Fig. 4 shows an example in which an address is added to the top of a document. An explanatory diagram showing an example, Fig. 5 is an explanatory diagram showing an example in which the address is overwritten at the leading edge of the document, Fig. 6 is a pronunciation diagram showing the input switching means, and Fig. 7 is each control in the first embodiment. Flow chart of the means; FIG. 8 is a block diagram showing the second embodiment; FIG. 9 is a block diagram showing the second embodiment;
The figure is a flowchart of the main control unit showing the third embodiment, Fig. 10 is a block diagram showing the fourth embodiment, and Figs. 11 and 12 show an example of adding another document to an arbitrary position of the document. FIG. 13 is a block diagram in the case where a logic operation unit is used as the input switching means, and FIGS. 14 and 15 are explanatory diagrams showing an example in which another document is superimposed on an arbitrary position of a document. Explanation of symbols 1...Input switching means, 5...Compressed data storage section, 6...Combined compressed data storage section, 14...Main control section, 15...Restoration section, 16.
...Reading unit, 17...Compression unit, 18...Line memory, 19...Picture information storage unit, 20...Restoration control means, 21...Reading control means. 22... Compression control means, 23-... Input switching signal, 2
4... Restoration instruction signal, 25... Reading instruction signal, 26
. . . Compression instruction signal, 27 . . . Restoration control signal. 28...Reading control signal, 29...Compression control signal, 3
0: Restoration end signal. 41... Page restoration end signal, 42... Page reading end signal.

Claims (1)

[Scope of Claims] 1. An image processing device comprising a reading processing unit that reads and scans a document, and a compression processing unit that compresses line data, comprising: a compressed data storage unit that stores compressed data; and a compressed data storage unit that stores compressed data; 1. An image processing apparatus comprising: a restoration processing section for restoring the data; and input switching means for selecting line data from the restoration processing section or the reading processing section and inputting the selected line data to the compression processing section. 2. The image processing apparatus according to claim 1, wherein the reading processing section performs read-discard control or read-skip control in synchronization with the restoration processing of the restoration processing section. 3. In an image processing device that includes a reading processing unit that reads and scans a document, and a compression processing unit that compresses line data, the image processing device includes a compressed data storage unit that stores compressed data, and a restoration processing unit that restores the compressed data. and a logic operation section that synthesizes line data from the restoration processing section or the reading processing section and inputs the synthesized line data to the compression processing section. 4. first and second compressed data storage units that store compressed data; first and second restoration processing units that restore the compressed data in the first and second compressed data storage units, respectively; An image processing apparatus comprising: input switching means for selecting line data from first and second restoration processing sections and inputting the selected line data to the compression processing section. 5. First and second compressed data storage units that store compressed data; first and second restoration processing units that restore the compressed data in the first and second compressed data storage units, respectively; An image processing device comprising: a logic operation unit that combines line data from first and second restoration processing units and inputs the synthesized line data to the compression processing unit. 6. Claims 1 and 2, characterized in that an enlargement/reduction processing section for enlarging/reducing the line data is provided between the input switching means or logic operation section and the compression processing section.
, 3, 4 or 5. The image processing device according to . 7. A facsimile machine comprising the image processing apparatus according to claim 1, 2, 3, 4, 5 or 6, further comprising line control means for transmitting the data compressed by the compression processing section onto a communication line. 8. In a decompressor that decompresses compressed page data, first and second decompression processing units decompress compressed page data, and inputs from the first and second decompression processing units are switched and output. A restoring device characterized by comprising: input switching means for switching. 9. In a decompressor for decompressing compressed page data, first and second decompression processing units for decompressing compressed page data are combined with inputs from the first and second decompression processing units; 1. A restorer comprising: a logic operation unit that outputs an output. 10. A compressor for compressing line data, comprising an input switching means for switching and outputting the first and second inputs, and a compression processing section for compressing the input line data switched by the input switching means. Compressor features.