JPH06105118A - Facsimile equipment - Google Patents

Abstract

PURPOSE:To record received picture data rotated by 90 deg. onto recording paper by using a picture memory having a small capacity. CONSTITUTION:When picture data rotated by 90 deg. are recorded, an expander 16 is used to expand the picture data of n-lines and the expanded data are stored in an n-line buffer 17, and then a 1st start/stop signal 21 stops the expander 16. Simultaneously a 2nd start/stop signal 22 starts a rotation processing section 18 to sequentially read picture data from the n-line buffer 17 and the data are fed to the rotation processing section 18. The rotation processing section 18 rotates the picture data by 90 deg. in the unit of n-bitXn-bit and outputted to a page memory 19. An address control section 24 writes the picture data from the rotation processing section 18 to a prescribed position on the page memory 19 corresponding to the state that the picture area for one page is rotated by 90 deg..

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a facsimile apparatus which can record received image data by rotating it by 90 degrees.

[0002]

2. Description of the Related Art In a conventional facsimile apparatus, when a recording paper having the same size as the received original and different in the vertical and horizontal directions is set, the recording paper larger than the received original is printed at a normal size with margins on both sides. Or, it was recorded on a recording paper smaller than the received original. A method of rotating image data by 90 degrees and recording the image data has also been proposed.

[0003]

However, in the conventional image data rotation processing method, for example, Japanese Patent Application Laid-Open No. 3-36 is used.
As disclosed in Japanese Patent Publication No. 671 Gazette, two image memories, an image memory for storing the original image data and an image memory for storing the image data after the rotation processing, are required, so that the image memory becomes large in capacity. was there.

Therefore, an object of the present invention is to rotate the received image data by 90 degrees and record it on the recording paper when the recording paper having the same size as the received original and different in the vertical and horizontal directions is set. It is an object of the present invention to provide a facsimile apparatus that can reduce the capacity of the image memory.

[0005]

According to a first aspect of the present invention, there is provided a facsimile apparatus including a receiving means for receiving image data,
Decompression means for decompressing the image data received by the receiving means, rotation processing means for performing 90 degree rotation processing on a predetermined amount of image data after decompression by the decompression means, and image after decompression by the decompression means. A line memory that stores data for the number of lines required for rotation processing, a page memory that stores one page of image data after rotation processing by the rotation processing means, and image data after expansion by the expansion means are necessary for rotation processing. After the image data stored in the line memory is stored in the line memory for the number of lines, the rotation processing control means for performing the rotation processing by sending the image data to the rotation processing means and the image of one page for the page memory. An address for supplying a write address for storing the image data after the rotation processing to a predetermined position corresponding to a state where the area is rotated by 90 degrees. And control means, in which a recording means for recording an image based on the image data stored in the page memory.

In this facsimile apparatus, the image data received by the receiving means is expanded by the expanding means and stored in the line memory by the number of lines required for the rotation processing. When the image data corresponding to the number of lines necessary for the rotation processing is stored in this line memory, the rotation processing control means reads the image data from the line memory and sends it to the rotation processing means. Rotation processing is performed. The image data after this rotation processing is
The page is stored in the memory in accordance with the write address supplied from the address control means, and the image data obtained by rotating one page by 90 degrees is stored in the page memory. Then, based on the image data stored in the page memory, the recording means records the image.

According to a second aspect of the present invention, there is provided a facsimile apparatus, wherein the receiving means, the expanding means, and
In addition to the rotation processing means, the line memory, the page memory, the address control means and the recording means, the image data after the expansion by the expansion means is stored in the line memory for the number of lines required for the rotation processing, and then the expansion means is expanded. The rotation processing starting means for temporarily stopping the operation, reading the image data stored in the line memory and sending it to the rotation processing means to perform the rotation processing, and the rotation processing for the image data stored in the line memory by the rotation processing means are all After completion, the operation of the rotation processing means is temporarily stopped and the expanding operation of the expanding means is restarted.

In this facsimile apparatus, when the image data corresponding to the number of lines necessary for the rotation processing is stored in the line memory, the rotation processing starting means suspends the expansion operation of the expansion means, and the image is read from the line memory. The data is read and sent to the rotation processing means, and 90 degrees rotation processing is performed by this rotation processing means. When the rotation processing means completes all the rotation processing of the image data stored in the line memory, the decompression operation starting means suspends the operation of the rotation processing means and restarts the decompression operation of the decompression means.

According to a third aspect of the present invention, there is provided a facsimile machine which comprises a receiving means, an expanding means, and
In addition to the rotation processing means, the page memory, the address control means, and the recording means, two line memories for storing the image data expanded by the expansion means for the number of lines required for the rotation processing, and the image expanded by the expansion means, respectively. Line memory control means for storing data in two line memories alternately by the number of lines required for rotation processing, reading the image data from the line memory where the storage of the image data is completed, and sending it to the rotation processing means for rotation processing. It is equipped with and.

In this facsimile apparatus, the line memory control means alternately stores the image data expanded by the expansion means in two line memories by the number of lines required for the rotation processing, and the line for which the storage of the image data is completed is stored. The image data is read from the memory and sent to the rotation processing means for rotation processing. Therefore, the expansion operation and the rotation processing operation are performed without stopping.

[0011]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a block diagram showing the schematic arrangement of a facsimile apparatus according to the first embodiment of the present invention. This facsimile apparatus includes a network control unit 11 connected to a line, a modem 12 connected to the network control unit 11, and a modem 1
2 is connected to the code storage unit 13, and the code storage unit 13
And a compressor 14 and an expander 16 connected to the. A reading unit 15 is connected to the compressor 14. On the other hand, the n-line buffer 17, the rotation processing unit 18, the page memory 19, and the storage unit 20 are sequentially connected to the subsequent stage of the decompressor 16. In addition, the facsimile machine
A control unit 23 for giving a first start / stop signal 21 to the decompressor 16 and a second start / stop signal 22 for the rotation processing unit 18, an n-line buffer 17, and a page memory 19. And an address control section 24 for supplying a write address and a read address. The operation of the address controller 24 is controlled by the controller 23. In addition, the control unit 23
Has a central processing unit and a memory serving as a working area for storing a program executed by the central processing unit.

The rotation processing unit 18 rotates n-bit × n-bit image data by 90 degrees, and its configuration and operation will be described in detail later. The n-line buffer 17 stores the image data decompressed by the decompressor 16 for n lines necessary for the rotation processing by the rotation processing unit 18.
The page memory 19 stores the image data from the rotation processing unit 18 for one page.

Next, an outline of the operation of the facsimile apparatus of this embodiment will be described. At the time of transmission, the image data obtained by reading the document by the reading unit 15 is encoded by the compressor 14,
After being temporarily stored in the code storage unit 13, it is read out, modulated by the modem 12, and transmitted to the line via the network control unit 11. At the time of reception, the image data received via the network control unit 11 is demodulated by the modem 12, temporarily stored in the code storage unit 13, then read and expanded by the expander 16, and n
One page is stored in the page memory 19 through the line buffer 17 and the rotation processing unit 18. Then, based on the image data stored in the page memory 19, the recording unit 20 records an image.

As in the case where a recording paper having the same size as the received original and different in the vertical and horizontal directions is set, the image data is set to 9
When recording the image by rotating it by 0 degrees, the control unit 23 first activates the expander 16 by the first start / stop signal 21, and the rotation processing unit 18 by the second start / stop signal 22. Set to the stopped state. In this state, the expander 16
Reads the coded image data accumulated in the code storage unit 13, sequentially expands and stores it in the n-line buffer 17.

The decompressor 16 converts the image data of n lines into n
When stored in the line buffer 17, the control unit 23 puts the decompressor 16 in the stopped state by the first start / stop signal 21, and puts the rotation processing unit 18 in the started state by the second start / stop signal 22, and further The control unit 24 is instructed to generate an address necessary for the rotation processing. The address controller 24 supplies a read address to the n-line buffer 17, sequentially reads image data from the n-line buffer 17, and supplies the image data to the rotation processor 18. The rotation processing unit 18 rotates the image data supplied from the n-line buffer 17 by 90 degrees in units of n bits × n bits and outputs it to the page memory 19. The address control unit 24 supplies the write address to the page memory 19, and the rotation processing unit 1
The image data from 8 is written in a predetermined position on the page memory 19 corresponding to a state in which the image area of one page is rotated by 90 degrees.

When the rotation processing section 18 completes all the rotation processing of the image data stored in the n-line buffer 17, the control section 23 responds to the first start / stop signal 21 by the decompressor 1.
6 is activated again, and the rotation processor 18 is deactivated by the second activation / stop signal 22.

By repeating the above operation, the image data for one page is rotated by 90 degrees, and the page memory 19 is rotated.
Stored in. Then, the recording unit 20 records an image based on the image data stored in the page memory 19 to record an image obtained by rotating the received image by 90 degrees.

When the 90-degree rotation processing is not performed, the image data may be written in the page buffer 19 by bypassing the n-line buffer 17 and the rotation processing section 18, or only the rotation processing section 18.

As described above, in this embodiment, when the recording paper having the same size as the received original and different in the vertical and horizontal directions is set, the received image data can be rotated by 90 degrees and recorded on the recording paper. Since the page memory 19 for one screen and the n-line buffer 17 are sufficient as the image memory, the capacity of the image memory can be reduced.

FIG. 2 is a block diagram showing the schematic arrangement of a facsimile apparatus according to the second embodiment of the present invention. In this embodiment, two n line buffers 17 ₁ and 17 ₂ are provided instead of the one n line buffer 17 in the first embodiment, and the image data from the decompressor 16 is stored in the n line buffers 17 ₁ and 17 ₂ . A selector 26 selectively supplying one of the outputs and a selector 27 selectively supplying one output of the n-line buffers 17 ₁ and 17 ₂ to the rotation processing unit 18 are provided. The selectors 26 and 27 are adapted to be switched alternately every n lines by switching signals S ₁ and S ₂ from the control section 23. Further, in this embodiment, the first start / stop signal 21 and the second start / stop signal 21
The stop signal 22 is set to the activated state and the stopped state at the same time.

In the present embodiment, when the image data is recorded by rotating it by 90 degrees, the control unit 23 controls the first start / start.
With the start state expander 16 and the rotation unit 18 by the stop signal 21 and the second start / stop signal 22, selects the n-line buffer 17 ₁ side by the selector 26 by the switching signal S _1, the switching signal S _{In accordance with 2} , the selector 27 selects the n-line buffer 17 ₂ side. In this state, the decompressor 16 reads out the coded image data accumulated in the code storage unit 13, sequentially decompresses it, and stores it in the line memory 17 ₁ .

The decompressor 16 converts the image data of n lines into n
When stored in the line memory 17 ₁ , the control unit 23 switches the selector 26 to select the n line buffer 17 ₂ side by the switching signals S ₁ and S ₂ , and the selector 27 to select the n line buffer 17 ₁ side. Further, the address controller 24 is instructed to generate an address necessary for the rotation processing. In this state, the decompressor 16 will store the image data expanded in the line memory 17 _2, at the same time, the address control section 24 supplies a read address to the n-line buffer 17 _1, From the n-line buffer 17 ₁ The image data is sequentially read and supplied to the rotation processing unit 18. The rotation processing unit 18 rotates the image data supplied from the n-line buffer 17 ₁ by 90 degrees in units of n bits × n bits and outputs the rotated image data to the page memory 19. The address control unit 24 supplies the write address to the page memory 19 so that the image data from the rotation processing unit 18 can be transferred to the image area of one page by nine.
Writing is performed at a predetermined position on the page memory 19 corresponding to the state of being rotated by 0 degree.

The rotation processing unit 18 uses the n-line buffer 17 ₁
When all the rotation processing of the image data stored in
The control unit 23 writes by the switching signals S ₁ and S ₂ ,
The n-line buffer for reading is switched to perform the same operation as described above, and thereafter, similarly, n lines are alternately alternated for n lines.
The line buffer is switched to process one page of image data.

As described above, in this embodiment, the decompressor 16 and the rotation processing section 18 are continuously operated without being stopped for processing, so that the processing speed is higher than that in the first embodiment.

Other configurations, operations and effects are similar to those of the first embodiment.

Next, the structure of the parts common to the first and second embodiments of the present invention will be described in detail.

FIG. 3 is a block diagram showing the configuration of the address controller 24. The address generator 4 includes nine registers 41 to 49 and a selection signal ASEL from the controller 23.
A multiplexer (hereinafter referred to as MUX) 52 that selects and outputs one of the outputs of the registers 41 to 49 according to the above, and each of the registers 41 to 49 according to a selection signal BSEL from the control unit 23. An MUX 53 that selects and outputs one of the outputs, and an arithmetic logic calculator that inputs the outputs of the MUXs 52 and 53 as A and B, respectively, and performs a predetermined calculation and outputs the calculation result as C (hereinafter, ALU
Is written. ) 54 and. The ALU 54 is adapted to select and execute one of the following five functions according to a signal FUNCTION from the control unit 23. The six functions are "C = A + B" and "C = A-
B ”,“ C = A + 1 ”,“ C = A−1 ”, and“ C = A ”. The calculation result C of the ALU 54 is output as the address 58. In addition to the calculation result C, the ALU 54 outputs a coincidence signal 59 described later to the control unit 23.

The address control unit 24 further includes a control unit 23.
The initial data INI and the calculation result C of the ALU 54 are input, one is selected according to the selection signal SEL from the control unit 23, and M is output to each of the registers 41 to 49.
It is provided with a UX 55 and a decoder 56 which decodes a selection signal CSEL from the control unit 23 and gives a selection signal 57 to each of the registers 41 to 51.

The contents of the data stored in each of the registers 41 to 49 will be described later.

Next, the rotation processing section 18 will be described.

FIG. 4 is an explanatory diagram showing data input / output by the rotation processing unit 18. As shown in this figure, the rotation processing unit 18 receives input data D from the line buffer 17 (including the line buffers 17 ₁ and 17 ₂ in the second embodiment).
I is input, and output data DO is output to the page buffer 19. Further, the rotation processing unit 18 receives the clock CLK, the reset signal / RST, and the write clock W from the control unit 23.
The RCLK and the read clock RDCLK are input and the signal WR16END and the signal RD16END are output to the control unit 23. The rotation processing unit 18 uses the write clock WRCLK and the read clock RD.
Since writing and reading are performed based on CLK, these write clock WRCLK and read clock RDCLK correspond to the second start / stop signal 22 in FIGS. 1 and 2.

FIG. 5 is a block diagram showing the structure of the rotation processing unit 18. As shown in this figure, the rotation processing unit 18 is
Input data DI having 16 × 16 flip-flops (hereinafter referred to as FF) arranged in a matrix.
FF unit 61 for inputting and holding and each F of this FF unit 61
An MUX unit 62 including 16 MUXs provided for every 16 units of F, and an AND gate 63 having one input of the output of each MUX of the MUX unit 62 and the other input of the read clock RDCLK. Is equipped with. The output of the AND gate 63 becomes the output data DO.

Further, the rotation processing section 18 further decodes the write address counter 64 which counts the write clock WRCLK at the timing of the clock CLK and the write address output from the write address counter 64 to generate a clock for the FF section 61. Output decoder 65, output of this decoder 65 and write clock WR
An AND gate 66 that inputs CLK and outputs a clock 67 to the FF unit 61, a read address counter 68 that counts the read clock RDCLK at the timing of the clock CLK, and a read address that this read address counter 68 outputs are decoded. And a decoder 69 that outputs a selection signal 70 to the MUX unit 62.

Both the write address counter 64 and the read address counter 68 are cleared to "0" by the reset signal / RST, and the write address counter 64 counts 16 write clocks WRCLK and outputs the signal W.
R16END is output, and the read address counter 68 outputs a signal RD16END after counting 16 read clocks RDCLK.

FIG. 6 shows the FF unit 61 of the rotation processing unit 18 and the MU.
FIG. 6 is a block diagram showing an X section 62. The input data D
I consists of input data DI _{0 to} DI ₁₅ and output data D
It is assumed that O is composed of output data DO _{0 to} DO ₁₅ . As shown in this figure, the FF unit 61 has 16 Fs each receiving one of the input data DI _{0 to} DI _{15.
F70 0 ~70 15, 71 0 ~71} 15, ..., 85 0 ~85
_{Have 15} . Of these, FFs 70 ₀ , 71 ₀ , ...
85 ₀ inputs data when the write address WRAD is “0”, and similarly, FFs 70 _{1 to} 85 ₁ , ..., FF 7
0 _{15 to} 85 ₁₅ also input data when the write address WRAD is “1”, ...

In addition, the MUX unit 62 includes 16 MUXs 62.
Has _{0 ~62 15,} MUX62 ₀ is FF70 ₀ to 85 ₀
One of the outputs is selected and output as output data DO ₀ . MUX 62 ₁ to output as the output data DO ₁ selects one of the output of the FF70 ₁ to 85 _1. Similarly, the MUXs 62 _{2 to} 62 ₁₅ also select one of the corresponding 16 FFs and output it as output data DO _{2 to} DO ₁₅ . These MUX
62 _{0 to} 62 ₁₅ output the data of the FFs 70 ₀ to 70 ₁₅ when the read address RDAD is “0”, and similarly,
When the read address RDAD is "1", ..., "15", the data of the FFs 71 _{0 to} 71 ₁₅ , ..., 85 _{0 to} 85 ₁₅ are output.

Next, the operation of the rotation processing section 18 will be described with reference to FIG. 1 in FIGS. 7A and 7B
Each 6 × 16 cell represents each FF of the FF unit 61. The vertical axis in FIG. 7A indicates the write address W.
RAD is shown, the horizontal axis shows the input data DI _{0 to} DI _15, and the vertical axis in FIG. 7B shows the read address RDAD.
And the horizontal axis represents the output data DO _{0 to} DO ₁₅ .

As shown in FIG. 7A, when writing the input data into the FF section 61, the input data DI _{0 to} DI ₁₅ are input.
Is written in a position corresponding to the write address WRAD according to the write address WRAD which is sequentially incremented from "0". On the other hand, as shown in FIG. 7B, when the output data is read from the FF unit 61,
Read address RD that is sequentially incremented from "0"
According to AD, the output data DO _{0 to} DO ₁₅ are read from the position corresponding to this read address RDAD. The write address WRAD and the read address RDAD
Both return from “15” to “0. As can be seen from the configuration shown in FIG. 6, when reading output data, data is read out column by column in the direction orthogonal to the time when data is written, so that FIG. As shown in
The rotated data will be output. In this way, the rotation processing unit 18 performs rotation processing of 90 degrees in block units, with 16-bit × 16-bit data as one block.

FIG. 8 is a timing chart showing the write operation of the rotation processing section 18. When writing,
The input data DI _{15 to} DI ₀ shown in (c) are written in the FF corresponding to the write address WRAD shown in (d) in response to the write clock WRCLK shown in (b).
Further, the write address counter 64 has the write clock WRCLK at the timing of the clock CLK shown in (a).
Is counted, the write address WRAD shown in (d) is incremented, and 16 write clocks WRCLK are counted, the signal WR16END shown in (e) is output.

FIG. 9 is a timing chart showing the read operation of the rotation processing section 18. When reading,
According to the read clock RDCLK shown in (b),
The output data DO _{15 to} DO ₀ shown in (c) are read from the FF corresponding to the read address RDAD shown in (d). The read address counter 68 also reads the read clock RD at the timing of the clock CLK shown in (a).
Read address RD shown in (d) after counting CLK
When AD is incremented and 16 read clocks RDCLK are counted, a signal RD16END shown in (e) is obtained.
Is output.

Next, with reference to FIG. 10, an outline of the operation for rotating one page of image data by 90 degrees in the embodiment of the present invention will be described.

In FIG. 10, (a) shows the image area of the original image, and (b) shows the image area of the image after the rotation processing in which the original image is rotated by 90 degrees. It is assumed that the original image data subjected to the decompression processing by the decompressor 16 has the number of words in the X direction (main scanning direction) of SXW. This original image data is stored in the n-line buffer buffer 17 every 16 lines, and is read from the n-line buffer 17 in 16-bit × 16-bit block units according to the order indicated by the numbers “1” to “8” in the figure. It is taken out and sent to the rotation processing unit 18. The image data rotated by the rotation processing unit 18 is stored in the page memory 19 according to the arrangement of each block in a state where the image area is rotated 90 degrees with respect to the original image. In this page memory 19, it is assumed that the number of words in the X direction is DXW and the number of lines in the Y direction is DYL. Further, the address of the first word of the first line in the line buffer 17 of the original image data is SAD. Further, the address of the first word of the last line in the page memory 19 of the image data after the rotation processing is DAD.

As described above, in the embodiment of the present invention, the page memory 19 is arranged according to the arrangement of each block in the state where the image area of the block rotated by the rotation processing unit 18 is rotated by 90 degrees with respect to the original image. The entire image data for one page is rotated by 90 degrees.

The contents of the data stored in the registers 41 to 49 of FIG. 3 will be described. Register 41
Stores the set value SADR of the address SAD described above. The register 42 stores “DAD + DXW × (DYL−
1) ”set value DADR is stored. The address of the set value DADR is an address where the image data is first written in the page memory 19, as shown in FIG. The register 43 stores the set value SXWR of the word number SXW in the X direction of the original image data. The register 44 stores the word number D in the X direction of the image data after the rotation processing.
The set value DXWR of XW is stored. The register 45 stores the set value DYLR of the number of lines DYL in the Y direction of the image data after the rotation processing. In addition, this DYLR is "1.
It must be a multiple of 6 ". Registers 46 to 49 have data SADP and DAD used in internal processing, respectively.
P, DXWP, and DYLP are stored.

As an example, when converting an A4 vertical 400 dpi original image into an A4 horizontal 400 dpi rotated image, SXWR = 3456/16 = 216, DXWR
= 4864/16 = 304, DYLR = SXWR × 16
Becomes

Next, with reference to FIG. 11, the operation for rotating one page of image data by 90 degrees in the embodiment of the present invention will be described in detail.

FIG. 11 is a flow chart showing the operation of the embodiment of the present invention. In this operation, first, in step (hereinafter referred to as S) 101, DXWP is cleared. Next, in S102, the decompressor 16 decompresses 16 lines, clears DYLP, sets DADR to DADP, and increments DADR. Where DADR
Is incremented in order to proceed to the block "5" after the writing of the blocks "1" to "4" is completed in the page memory 19 as shown in FIG. When the expansion processing of 16 lines by the expander 16 is completed, the expander 16 is stopped by the first start / stop signal 21 and the rotation processing unit 18 is stopped by the second start / stop signal 22 in the first embodiment. to start. In the second embodiment, the expansion processing by the expander 16 and the rotation processing after S102 are performed in parallel by using separate n line buffers 17 ₁ and 17 ₂ .

Next, in step S103, SADR is set to SADP, and SADR is incremented. Where SADR
Is incremented in order to proceed to the next block after the reading of one block is completed in the line buffer 17 as shown in FIG.

Next, in S 104, one word of data is read from the memory of the SADP address in the line buffer 17 and written in the rotation processing section 18. In addition, SADP + SXWR is SAD for reading the next line.
Let P. Next, in S105, it is determined whether or not the signal WR16END from the rotation processing unit 18 is enabled. Signal W
If R16END is enabled, it means that the rotation processing unit 1
This means that writing 16 times to 8 has been completed. If the signal WR16END is not enabled (“N”), the process returns to S104, and if the signal WR16END is enabled (“Y”), the process proceeds to S106. Therefore,
Since S104 is repeated 16 times, one block of data is transferred from the n-line buffer 17 to the rotation processing unit 18.
Will be written to.

Next, in S106, one word of data is read from the rotation processing unit 18 and written in the address of DADP in the page memory 19. In order to write the next data, DADP-DXWR is set to DADP,
Increment DYLP. Next, in S107, it is determined whether or not the signal RD16END from the rotation processing unit 18 is enabled. When the signal RD16END is enabled, it means that the rotation processing unit 18 has finished reading 16 times. If the signal RD16END is not enabled (“N”), the process returns to S106 and the signal RD16E is returned.
If ND is enabled (“Y”), the process proceeds to S108.
Therefore, S106 is repeated 16 times, and 1
The block data is written from the rotation processing unit 18 to the page memory 19.

Next, in S108, it is determined whether or not DYLR and DYLP are equal. The fact that DYLR and DYL are equal means that the number of lines in the Y direction in the image data after the rotation processing, that is, in the example of FIG.
This means that the processing for 4 blocks such as "4" has been completed. In this case (“Y”), the process proceeds to S109. DYLR
And DYL are not equal (“N”), the process returns to S103, and writing and reading are performed on the rotation processing unit 18 for the next block.

Next, in S109, DXWP is incremented, and in S110, it is determined whether or not DXWR and DXWP are equal. The fact that DXWR and DXWP are equal means that writing of one page of image data into the page memory 19 has been completed. In this case (“Y”), the rotation process for one page is completed. DXW
If R and DXWP are not equal (“N”), the process returns to S102 and continues the process. When returning from S110 to S102, in the first embodiment, the expander 16 is activated by the first start / stop signal 21 and the second start / stop signal 22 is activated.
Thus, the rotation processing unit 18 is stopped, and the selectors 26 and 27 are switched in the second embodiment.

Note that DXWP clearing, SADR, D
ADR, SXWR, DXWR, and DYLR are set as follows. That is, in the address control unit 24 of FIG. 3, the MU is selected by the selection signal SEL from the control unit 23.
At X55, the initial data INI side is selected, the register to write the setting value is designated by the selection signal CSEL from the control unit 23, and each setting value sent from the control unit 23 as the initial data INI is written to the corresponding register.

Further, S102, S103, S104, S
The arithmetic processing in 106 and S109 is performed by the address control unit 24 of FIG.
5, the ALU 54 side is selected and the selection signal ASEL,
The BSEL selects the output of the register that becomes the inputs A and B of the ALU 54, the select signal CSEL selects the register to be written, and the FUNCTION selects ALU5.
This is realized by selecting the corresponding function in 4. Further, in the determination in S108 and S110, A
The LU 54 compares the two inputs, outputs a match signal 59 when they match, and the control unit 23 determines based on the match signal 59.

[0056]

As described above, according to the invention described in claim 1 or 2, the received image data is rotated by 90 degrees when a recording paper having the same size as the received original but different in the vertical and horizontal directions is set. The size of the image memory can be reduced by using the page memory for one screen and the line memory for storing the number of lines required for the rotation processing. There is an effect that can be.

According to the third aspect of the invention, since the two line memories are provided, the decompression means and the rotation processing means can be operated continuously without stopping, and processing can be performed. In addition to the above effects, there is an effect that the processing speed becomes faster.

[Brief description of drawings]

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

FIG. 2 is a block diagram showing a schematic configuration of a facsimile apparatus according to a second embodiment of the present invention.

FIG. 3 is a block diagram showing a configuration of an address control unit in FIGS. 1 and 2.

FIG. 4 is an explanatory diagram showing data input and output by the rotation processing unit of FIGS. 1 and 2.

5 is a block diagram showing a configuration of a rotation processing unit in FIGS. 1 and 2. FIG.

6 is a block diagram showing an FF unit and a MUX unit of the rotation processing unit of FIG.

FIG. 7 is an explanatory diagram showing an operation of the rotation processing unit of FIG.

FIG. 8 is a timing chart showing an operation at the time of writing in the rotation processing unit of FIG.

9 is a timing chart showing an operation at the time of reading by the rotation processing unit of FIG.

FIG. 10 is an explanatory diagram showing an operation when rotating one page of image data by 90 degrees in the embodiment of the present invention.

FIG. 11 is a flowchart showing an operation when rotating one page of image data by 90 degrees in the embodiment of the present invention.

[Explanation of symbols]

16 ... Decompressor, 17 ... N line buffer, 18 ... Rotation processing unit, 19 ... Page memory, 23 ... Control unit, 24 ... Address control unit

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Kenichi Sonobe 3-7-1 Fuchu, Iwatsuki City, Saitama Prefecture Fuji Xerox Co., Ltd. Iwatsuki Office

Claims (3)

[Claims] 1. A receiving means for receiving image data, a decompressing means for decompressing the image data received by the receiving means, and a rotation processing of 90 degrees with respect to a predetermined amount of image data decompressed by the decompressing means. Rotation processing means for performing the rotation processing, a line memory for storing the image data expanded by the expansion means for the number of lines necessary for the rotation processing, and a page for storing the image data after the rotation processing by the rotation processing means for one page. After the memory and the image data decompressed by the decompression means are stored in the line memory by the number of lines required for the rotation processing, the image data stored in the line memory is read and sent to the rotation processing means. Rotation processing control means for performing rotation processing, and an image area of one page is set to 90 in the page memory.
Address control means for supplying a write address for storing the image data after the rotation processing to a predetermined position corresponding to a state of being rotated by a degree, and recording an image based on the image data stored in the page memory. A facsimile apparatus comprising: a recording unit for performing. 2. Receiving means for receiving image data, decompressing means for decompressing the image data received by the receiving means, and rotation processing of 90 degrees with respect to a predetermined amount of image data decompressed by the decompressing means. Rotation processing means for performing the rotation processing, a line memory for storing the image data expanded by the expansion means for the number of lines necessary for the rotation processing, and a page for storing the image data after the rotation processing by the rotation processing means for one page. After the memory and the image data after being expanded by the expanding means are stored in the line memory by the number of lines required for the rotation processing, the expanding operation of the expanding means is temporarily stopped and stored in the line memory. Rotation processing starting means for reading out image data and sending it to the rotation processing means to perform rotation processing; and one page image for the page memory. Area 90
Address control means for supplying a write address for storing the image data after the rotation processing to a predetermined position corresponding to a state of being rotated once, and rotation of the image data stored in the line memory by the rotation processing means. After all the processing is completed, the operation of the rotation processing means is temporarily stopped and the decompression operation starting means for resuming the decompression operation of the decompression means and the recording of the image based on the image data stored in the page memory are performed. A facsimile apparatus comprising a recording unit. 3. Receiving means for receiving image data, decompressing means for decompressing the image data received by this receiving means, and rotation processing of 90 degrees with respect to a predetermined amount of image data decompressed by this decompressing means. Rotation processing means for performing the above, two line memories for respectively storing the image data expanded by the expansion means for the number of lines required for the rotation processing, and the image data after the rotation processing by the rotation processing means for one page. A page memory for storing and image data after expansion by the expansion means are alternately stored in two line memories by the number of lines required for the rotation processing, and the image data is read from the line memory after the storage of the image data. Line memory control means for sending the rotation processing means to the rotation processing means, and a page memory for the page memory. 90 image areas
Address control means for supplying a write address for storing the image data after the rotation processing to a predetermined position corresponding to a state of being rotated by a degree, and recording an image based on the image data stored in the page memory. A facsimile apparatus comprising: a recording unit for performing.