JP3767482B2 - Communication terminal device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a communication terminal device such as a facsimile machine and a multifunction machine having multiple functions such as a fax function and a copying function.
[0002]
[Prior art]
In general, a communication terminal device such as a facsimile machine has a function of reading an original by an image reading unit, a communication function of transmitting or receiving a read original or stored data, and a function of printing a read original or received data. I have.
[0003]
[Problems to be solved by the invention]
In the facsimile apparatus having the above-described image reading function, communication function, and printing function, there is a demand for operating the plurality of processes simultaneously in parallel for speeding up the processes. In order to meet these demands, an encoding codec (CODEC) is provided for each of image reading, communication processing, and print processing. However, providing at least three codecs to execute at least three different functions simultaneously has the problem of increasing the cost of the apparatus.
[0004]
The present invention has been made paying attention to the above problems, and an object of the present invention is to provide a communication terminal apparatus capable of simultaneously executing a plurality of processes in parallel while suppressing an increase in cost.
[0005]
[Means for Solving the Problems]
A communication terminal device according to the present invention includes an image memory, a communication unit that exchanges data related to the image memory via a communication unit, a recording unit that records image data stored in the image memory, and a document image. A first codec for communication that encodes / decodes data related to the image memory between the image memory and the communication unit, image data to be recorded by the recording unit, and An image memory for storing image data read by the image reading unit ; and a second codec different from the first codec for communication for encoding / decoding data between the image memory and the image memory ; Means for converting the character code stored in the image memory into an image, and the converted data via the first and second codecs. Not in, and means for transferring the image memory, the image data to be recorded by the recording unit in the transfer to the image memory via said transfer means from the image memory, the document read by the image reading unit The second codec is used for encoding and storing in the image memory.
[0006]
The communication terminal apparatus of this invention, if for example the list printing, the image conversion enlarged handle character codes, not through the Kodeikku, the transfer means, for example, by DMA or programmed to transfer to the image memory, the image data Is printed as a list at the recording section. Further, the original read by the original reading unit is encoded by the second codec and stored in the image memory .
[0007]
In the communication terminal device according to the present invention , for example, during the list printing, the document read by the image reading unit is stored in the image memory from the image memory, through the second codec, and stored in the image memory. And document image reading can be processed in parallel.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the present invention will be described in more detail with reference to embodiments. FIG. 1 is a block diagram showing the configuration of a facsimile apparatus in which the present invention is implemented. The facsimile apparatus includes a CPU (control unit) 1, NCU 2, MODEM 3, ROM 4, SRAM 5, image memory (SDRAM) 6, operation unit 7, CODEC 8 for printer / scanner, CODEC 9 for communication, DMA 10, CCD scanner 11, scanner A processing unit 12, an image memory (SDRAM) 13, an image processing unit 14, a printer control unit 15, an LED printer 16, a bus 17, and a display unit 18 are provided.
[0009]
CPU1 controls each part which comprises this apparatus. The NCU 2 controls the connection with the telephone line network (PSTN) 18 and has a function of transmitting a dial signal corresponding to the telephone number (including the FAX number) of the other party and a function of detecting an incoming call. . MODEM3 is an ITU (International Telecommunication Union) -T recommendation T.264. 30 based on the facsimile transmission control procedure according to 17, V. 27ter, V.I. 29, the transmission data is modulated and the received data is demodulated. Further, in addition to these, V.V. 34, the transmission data is modulated and the received data is demodulated.
[0010]
The ROM 4 stores a program for controlling the apparatus, character font data, and the like. The SRAM 5 temporarily stores data and the like. The image memory (SDRAM) 6 has storage areas such as an ECM buffer, an image storage unit, and a font image buffer, and stores image data. The operation unit 7 allows the user to perform instruction operations such as FAX transmission / reception, printing, and image reading. The printer / scanner CODEC 8 encodes (encodes) the image data using the MH, MR, MMR method, or the like when printing the image data or when reading the data but storing the data in the image memory 6. The communication CODEC 9 encodes the received image data by MH, MR, MMR, etc. in order to transmit the image data, and decodes (decodes) the received image data. The DMA 10 is provided for transferring the image data from the image memory 6 without passing through the CODEC 8 and the CODEC 9. The CCD scanner 11 reads the image data of the original when sending a fax or copying. The scanner processing unit 12 performs image processing on the document read by the CCD scanner 11 and stores it in the image memory 13 and the image memory 6.
[0011]
The image memory 13 stores the image read by the CCD scanner 11 and the image data received from the image memory 6. The image processing unit 14 performs image processing related to the scanner control unit 12, the image memory 13, the printer control unit 15, and each unit connected to the bus 17. The printer control unit 15 executes print control of the LED printer 16. The display unit 18 displays command information such as key buttons, warning information, and other information.
[0012]
Here, the simultaneous processing of the list print and the reading and accumulation of the document image in the facsimile apparatus of this embodiment will be described. The list print is a normal font table stored in the ROM 4 by reading out one line (80 characters) of the text stored in the image storage unit of the image memory 6 in step ST11 by the process shown in FIG. Is expanded into an image by referring to and stored in the font image buffer. An example of the image is shown in FIG. The image characters here are small. Next, the process proceeds to step ST2. An example of the font table is shown in FIG. This is a font table for character A, and an 8-bit image is read out and stored in a font image buffer.
[0013]
In step ST2, one line of the image is read out, and using the enlargement table, 1 byte is enlarged to a 6-byte image and stored in the image buffer. Then, the process proceeds to step ST3. In step ST3, it is determined whether or not 16 lines have been completed. When the processing for 16 lines is completed, the process proceeds to step ST4. On the other hand, if the processing for 16 lines has not been completed, the process returns to step ST2, and the processes of steps ST2 and ST3 are repeated while the processing lines are advanced one by one until the processing for 16 lines is completed. When the processing for 16 lines is completed, the image of the character is multiplied by 6 in width, and is enlarged from, for example, (a) in FIG. 3 to (b) in FIG. FIG. 6 shows an enlargement of the font table shown in FIG. 5 by 6 times. When this table is stored in the ROM 4, for the character A, the image data shown in FIG. 6 is stored in the font image buffer as conversion data.
[0014]
In step ST4, each enlarged line is continuously transferred to the image memory 13 via the DMA 10 six times. Then, the process proceeds to step ST5. In step ST5, it is determined whether or not the transfer for 16 lines has been completed. When the transfer for 16 lines is completed, the image enlargement conversion process for one line of text is completed. On the other hand, if the processing for 16 lines is not completed, the process returns to step ST4, and the processes of steps ST4 and ST5 are repeated while recommending processing lines one by one until the processing for 16 lines is completed. When the processing for 16 lines is completed, the character image is multiplied by 6 in both vertical and horizontal directions from FIG. 3A and stored in the image memory 13. In this way, the list data transferred to the image memory 13 is given to the LED printer 16 via the image processing unit 14 and the printer control unit 15 and printed.
[0015]
When a document is read by the CCD scanner 11 during the list print processing operation, the document image is stored in the image memory 13 via the scanner processing unit 12 and the image processing unit 14, and further from the image processing unit 14 to the printer. The data is input to the CODEC 8 for the scanner, encoded, and stored in the image storage unit of the image memory 6. In this way, the list print and the document image reading are processed in parallel. FIG. 4 shows a data flow at the time of list printing and a data flow of document image reading. In FIG. 4, the route of the solid line A is a list print, and the route of the broken line B is a data flow path for reading a document image.
[0016]
In the facsimile apparatus of this embodiment, when performing fax transmission, the image data in the image memory 5 is encoded by the communication CODEC 9 and transmitted via the MODEM 3 and the NCU 2.
[0017]
Further, instead of transferring the image data via the DMA 10, it may be transferred directly by software.
[0018]
Here, the left side of / indicates font data (font of FIG. 5) before enlargement, and the right side of / is enlarged data.
[0019]
For example, the data in the third line in FIG. 5 is “00011100” and is 0x1C in hexadecimal. Therefore, the 6-times pattern table in FIG. 7 is referred to using this as an address. This table stores data 0x0000, 0x3FFF, and 0xFFFF as a result of multiplying each bit of 00001100 by 6.
[0020]
As described above, since each element pattern (256 patterns) constituting the character has only 6 times the data regardless of the character, a large storage ROM capacity is not required.
[0021]
【The invention's effect】
According to this invention, the communication codec, the image memory for storing the image data to be recorded by the recording unit, the means for converting the character code stored in the image memory into an image, and the converted data for the image data And a means for transferring to the image memory without using a codec, so there is no need to provide a codec for each of the print processing, communication processing, and image reading processing, reducing the cost increase and printing processing. Communication processing and image reading processing can be executed in parallel.
[0022]
Also, a first codec for communication for encoding / decoding data related to the image memory between the image memory and the communication unit, image data recorded by the recording unit, and image data read by the image reading unit An image memory for storing data, a second codec different from the first codec for communication, for encoding / decoding data between the image memory and the image memory, and a character code stored in the image memory And means for transferring the converted data to the image memory without passing through the first and second codecs, and the image data to be recorded by the recording unit is the image. during transfer to said image memory from the memory via said transfer means, the original read by the image reading unit, in the second Kodeikku And Goka, by to perform the process of storing in said image memory, for example, parallel processing lists printing and document image reading.
[0023]
Further, since the enlargement process is performed using the character font table and the enlargement table, the image can be enlarged without increasing the capacity of the memory for storing the font table.
[Brief description of the drawings]
FIG. 1 is a block diagram showing a configuration of a facsimile apparatus according to an embodiment of the present invention.
FIG. 2 is a flowchart for explaining text character image enlargement conversion processing in an image memory of the facsimile apparatus according to the embodiment;
FIG. 3 is a diagram illustrating an example of image enlargement conversion of the text character.
FIG. 4 is a diagram illustrating a data flow path at the time of list printing and reading of a document image in the facsimile apparatus according to the embodiment.
FIG. 5 is a view showing an example of a basic character font table of the facsimile apparatus according to the embodiment;
FIG. 6 is a diagram showing an example of an enlarged font table in which an image of the basic character font table is enlarged.
FIG. 7 is a diagram illustrating another example of the enlarged font table.
[Explanation of symbols]
1 CPU
2 NCU
3 MODEM
4 ROM
5 SRAM
6 Image memory 7 Operation unit 8 CODEC for printer / scanner
9 CODEC for communication
10 DMA
11 CCD scanner 12 Scanner processing unit 13 Image memory 14 Image processing unit 15 Printer control unit 16 LED printer 17 Bus 18 Display unit 19 Telephone line

Claims (2)

A communication terminal comprising: an image memory ; a communication unit that exchanges data related to the image memory via a communication unit; a recording unit that records image data stored in the image memory; and an image reading unit that reads an original image In the device
A first codec for communication for encoding / decoding data relating to the image memory between the image memory and the communication unit, image data recorded by the recording unit, and image data read by the image reading unit An image memory to store, a second codec different from the first codec for communication , which encodes / decodes data between the image memory and the image memory, and a character code to be stored in the image memory means and said first the converted data to be converted into image, without passing through the second Kodeikku, and means for transferring the image memory, the image data to be recorded by the recording unit image memory during the transfer to the image memory via said transferring means from the document read by the image reading unit, marks the second Kodeikku However, the communication terminal apparatus and performs a process of storing in the image memory.   2. The communication terminal device according to claim 1, wherein the conversion to the image includes an enlargement process, and the enlargement process is performed by a character font table and an enlargement table.

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