JPH05153412A - Facsimile equipment - Google Patents

Abstract

PURPOSE:To provide a facsimile equipment capable of displaying a reception signal with an excellent memory efficiency from a desired position. CONSTITUTION:A signal received by an MMR code is stored in an MR code storage memory 12 as an MR code at every prescribed line inputted via an input device 7 like a key board by an MR code conversion section 11. Simultaneously, the address of the MR code corresponding to the prescribed line is stored in an MR code management table 16. When a desired line to be displayed on a display device 15 is inputted from the input device 7, a display control section 18 references an MR code management table 16 via a frame memory control section 17 to detect the address of the MR code corresponding to the desired line and decodes a code stored in the MR code storage memory 12 and displays it.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a facsimile machine having a display function, and more particularly to a facsimile machine capable of displaying a desired portion.

[0002]

2. Description of the Related Art Conventionally, when displaying data received by a facsimile device on a CRT or the like, since the facsimile received data is data to be output on paper, a portion is cut out and displayed for displaying on the CRT. Must. Therefore, two methods are conceivable, in which the received code is expanded into image data and stored in a memory or the like, or the code data is stored and the portion to be displayed is cut out and displayed.

[0003]

Of the two methods described above, the former method is not suitable for a small-scale apparatus because the data to be handled is image data, the data amount is enormous and the storage efficiency is extremely poor. Further, the latter, which is stored as coded data, has a smaller amount of data than the former, the storage efficiency is improved, and the capacity is smaller than that of the former, but there is a problem that the code needs to be expanded every time it is displayed. In the latter case, if two-dimensional encoding with high compression efficiency, that is, MMR is used, image data cannot be obtained unless it is sequentially expanded from the beginning.
It takes a long processing time to display a partial display, and is not suitable for real-time processing.

The present invention has been made to solve the above problems, and it is an object of the present invention to provide a facsimile apparatus capable of efficiently displaying a received signal from a desired position in a memory.

[0005]

According to a first aspect of the present invention, there is provided a facsimile apparatus in which a storage unit for converting a received signal composed of an MMR code into a MR code as a block for each predetermined line and storing it, and a store for each predetermined line. Address management means for managing the address of the MR encoded signal, designated means for designating a desired line of predetermined lines, and decoding for decoding the MR encoded signal of the block corresponding to the designated line Means and display means for displaying the content of the decoded signal.

A facsimile machine according to a second aspect is M
First storage means for storing a signal received by the MR system as an MMR code, second storage means for converting the received signal into an MH encoding system for each predetermined line, and storing the MMR code for each predetermined line. Designating means for coding each block of a predetermined line based on the MH coded signal and designating a desired line of the predetermined lines, and decoding for decoding the MH and MMR coded signals of the block corresponding to the desired line And a display means for displaying the content of the decoded signal.

[0007]

In the facsimile apparatus according to the first aspect, when a desired line is designated, the MR coded signal of the block corresponding to the line is coded and displayed on the display means.

In the facsimile apparatus according to the second aspect, when the received signal is encoded with a predetermined line as the first line, the first line is the MH signal and the subsequent lines are the MMR system based on the first line. Is encoded. Most signals are MM
Since it is stored in the R method and only a part is stored in the MH method, the received content is displayed using a small memory for each block of a predetermined line.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of a facsimile apparatus according to the present invention will be described below with reference to the drawings.

FIG. 1 is a block diagram showing a main part of a facsimile apparatus according to the present invention. Referring to FIG. 1, the facsimile apparatus displays a receiving section 5 for receiving a signal from a facsimile apparatus on the other side, a data processing section 10 for processing the received MMR code, and a desired portion of the received signal. The facsimile apparatus includes an input device 7 such as a keyboard for indicating a desired position, and a display device 15 for displaying received contents in response to an input to the input device 7.

The data processing unit 10 converts the received MMR code into an MR code according to a predetermined numerical value K given from the display control unit 18 via the input device 7, stores it in the MR code storage memory 12, and K An MR code conversion unit 11 that outputs the memory address of the MR code for each line is included. Where K
Is a numerical value representing the number of lines displayed on the display device 15 such as a CRT display.

The coded signal from the MR code conversion unit 11 is stored in the MR code storage memory 12, and the MR code decoding unit 13 expands the MR code into image data.
The expanded image data is stored in the frame memory 14. In this example, the frame memory is assumed to include 640 × 400 display elements.

The head address of the block of the MR code for each K line output from the MR code conversion unit 11 is stored in the MR code management table 16. The desired display area displayed on the display device 15 input via the input device 7 is sent to the frame memory control unit 17 via the display control unit 18, and accordingly the frame memory control unit 17 causes the frame memory 14 to operate. The frame memory control for drawing the image data on the display and outputting the image data for display to the display device 15 is performed.

The display controller 18 outputs a synchronizing signal for display, controls the display position in the received data, and controls the scroll size.

FIG. 2 is a diagram showing the relationship between the received image data and the display area on the display device 15. Referring to FIG. 2, an MMR code of 1728 dots × 2339 lines is received below, and a part of the received data (display start position: 100 dots, 1600 lines) is displayed on a 640 × 400 CRT display in units of 16 lines. An example in the case of horizontal scroll display will be described.

FIG. 3 is a diagram showing the relationship between the MR code storage memory 12 and the MR code management table 16, and FIG. 4 is a diagram showing the relationship between the non-display area and the display area. FIG. 5 is a diagram showing the movement of the image data on the frame memory 14.

As shown in FIG. 3, the MMR code data received by the facsimile apparatus is sequentially converted into MR code by the MR code conversion unit 11 by the parameter K (16 in this embodiment) from the display control unit 18. , MR code storage memory 12. At the same time, the head address of the MR code memory for every 16 lines is sequentially stored in the MR code management table 16.

The display control unit 18 instructs the frame memory control unit 17 to perform the scroll display area shown in FIG. The frame memory control unit 17 retrieves the address storing the MR code of the scroll start line (1600th line) from the MR code management table 16 to obtain the screen (A) of FIG. Output to 4
The MR code decoding unit 13 is instructed to perform code expansion for 00 lines.

Next, a state in which the image is scrolled as shown in FIG. 2 will be described. MR code decoding unit 13
Outputs the image data shown in FIG. 4 to the frame memory, but the frame memory control unit 17 does not draw the non-display area in the frame memory 14, but draws only the display area.
Obtain the image of (A). Next, the frame memory control unit 17
Copies the area of FIG. 5 (B) to the area of FIG. 5 (C). Next, the frame memory control unit 17 fetches the address in which the MR code of the 2000th line is stored from the MR code management table 16 in the area of FIG. MR for the code expansion of minutes
The code decoding unit 13 is instructed.

Next, the frame memory control unit 17 draws the developed image data in the frame memory 14 to obtain the image of FIG. 5 (D). Similarly, this series of FIG.
By repeating the processing from (D) to (D), vertical scrolling for every 16 lines is realized.

(2) Second Embodiment Next, a second embodiment of the present invention will be described with reference to FIGS. 6 and 7.

FIG. 6 is a block diagram showing a main part of a facsimile in the second embodiment, which corresponds to FIG. 1 of the first embodiment, and FIG. 7 is an MMR code storage memory, an MH code storage memory and code management. It is a figure which shows the relationship with a table, and corresponds to FIG. 3 of a 1st Example.

First, referring to FIG. 6, the second embodiment is different from the first embodiment only in the data processing section 20, and the other receiving section 5 and display device 15 are the same as those in the first embodiment. Same as the case.

Referring to FIG. 6, the data processing unit 20 of the facsimile apparatus in the second embodiment of the present invention includes an MMR / MH code conversion unit 21 for converting a received MMR code into an MH code, and a received MMR. The MMR code storage memory 22 that stores the code as it is, and the MH code storage that stores the code subjected to the MH code conversion for every predetermined value K = 16th line by the MMR / MH code conversion unit 21 as in the first embodiment. A memory 23 is included. MMR code storage memory 22 and M
The H code storage memory 23 is managed by the MMR / MH code management table 24, and the address of the MMR code for every K = 16 lines and the storage address of the MH code are managed.
Image data is expanded by the MMR code combination unit 25 using the MMR code and the MH code stored in the MMR code storage memory 22 and the MH code storage memory 23.

The frame memory 26, the frame memory control unit 27, and the display control unit 28 are respectively the frame memory 16, the frame memory control unit 17, and the frame memory control unit 17 in the first embodiment.
Since it is the same as the display control unit 18, its description is omitted.

With reference to FIGS. 6 and 7, the MMR code data received by facsimile is sequentially converted into an MH code by the MMR / MH code conversion unit 21 while counting the number of lines, and MH of the K = 16th line. The code data is stored in the MH code storage memory 23, and the storage address is stored in the MMR.
/ MH code management table 24. At the same time as the above processing, MMR code data is also stored in the MMR code storage memory 2
2, and the MMR code storage address of the K = 16th line is sequentially stored in the MMR / MH code management table 24.

The display control unit 28 instructs the frame memory control unit 27 to perform the scroll display area shown in FIG. The frame memory control unit 27 uses the MMR / MH code management table 24 to obtain the MMR of the scroll start line (1600th line) in order to obtain the screen shown in FIG.
The address where the code and the MH code are stored is taken out. Then, the MH code is expanded and output as a reference pixel to the MMR code decoding unit 25, and the code expansion for 400 lines is performed by the MM.
The R code decoding unit 25 is instructed. MMR code decoding unit 2
5 is similar to the MR code decoding unit 13 of the first embodiment shown in FIG.
The image data shown in is output to the frame memory 26.
The frame memory control unit 27 does not draw the non-display area in the frame memory 26, but draws only the display area, as shown in FIG.
The image is obtained in the same manner as in the first embodiment.

Since the scrolling method is the same as that in the first embodiment, its explanation is omitted here.

[0029]

As described above, according to the first embodiment of the present invention, when a desired line is designated, the MR code of the block corresponding to the line is decoded and displayed on the display device. Thus, it is possible to provide a facsimile device capable of efficiently displaying a received signal from a desired position in a memory.

In the facsimile apparatus according to the second aspect, when the received signal is encoded by using the predetermined line as the first line, the first line is the MH signal and the subsequent lines are the MMR system based on the first line. Is encoded. Most signals are MM
Since the data is stored in the R method and only a part of the data is recorded in the MH method, the received content is displayed using a small memory for each block of a predetermined line. As a result, it is possible to provide a facsimile apparatus which can display received signals from a desired position with good memory efficiency.

[Brief description of drawings]

FIG. 1 is a block diagram showing a main part of a first embodiment of the present invention.

FIG. 2 is a diagram showing a relationship between received image data and a display area.

FIG. 3 is a diagram showing a relationship between an MR code memory and an MR code management table.

FIG. 4 is a schematic diagram showing a non-display area.

FIG. 5 is a diagram showing movement of image data on a frame memory.

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

FIG. 7 is an MMR code storage memory according to the second embodiment;
It is a figure which shows the relationship of MH code storage memory and MR code management table.

[Explanation of symbols]

 5 reception unit 10 data processing unit 11 MR code conversion unit 12 MR code storage memory 13 MR code decoding unit 14 frame memory 15 display device 16 MR code management table 17 frame memory control unit 18 display control unit

Claims (2)

[Claims] 1. A storage unit for converting a received signal composed of an MMR code into an MR code as a block for each predetermined line and storing the MR code, and managing an address of the stored MR encoded signal for each predetermined line. Address management means, means for designating a desired line of the predetermined lines, decoding means for decoding the MR coded signal of the block corresponding to the designated line, and the decoded signal And a display unit for displaying the contents of the facsimile. 2. A first storage means for storing a signal received by the MMR system as an MMR code, a second storage means for storing the received signal after converting the received signal into an MH encoding system for each predetermined line, and the MMR. The code is coded for each block of the predetermined lines based on the MH coded signal for each of the predetermined lines, a designating unit that designates a desired line of the predetermined lines, and the code corresponding to the desired line. Facsimile apparatus comprising means for decoding the MH and MMR encoded signals of a block and display means for displaying the decoded signal content.