JPH0795395A - Information terminal equipment - Google Patents

Abstract

PURPOSE:To provide the information terminal equipment in which number of times of display is reduced and picture quality at printing is not deteriorated by compressing received data according to the size of the data in the terminal equipment where received data cannot be displayed at once. CONSTITUTION:Data quantity of received data-are detected by comparing a memory capacity required for received data for each page with a memory capacity requiring data displayed at once stored in a display enable data measurement means 104 at a data quantity comparison means 106 in a paper size detection circuit 103. A compression rate selection means 107 selects a compression rate (1/n) of the received data by obtaining how many number of multiple of the data quantity able to be displayed at once stored in the display enable data measurement means 104 the detected data quantity is. A data compression means 108 applies data compression operation to the received data by a compression rate selected by the compression rate selection means 107 to provide an output of data after compression to a data output means 109.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a portable facsimile machine having a liquid crystal display means, and more particularly to an information terminal device having a narrow area in which received data can be displayed at one time.

[0002]

2. Description of the Related Art In recent years, information terminal devices such as facsimile devices are gradually available on the market, and liquid crystal panels represented by LCDs are often used for these information display means.

FIG. 5 shows a schematic block diagram of a conventional technique taking a portable facsimile as an example. In FIG. 5, 501 is a receiving means for receiving image or text data, 502 is a buffer means for temporarily storing the received data,
Reference numeral 503 is a data output means for printing the data from the buffer or displaying it on a data display device such as an LCD. Blocks other than 501 to 503 are not directly related to the present invention and are therefore omitted from the drawing.

[0004]

As described above, in the conventional information terminal device, since it is necessary to downsize the device in order to attach importance to the portable type, the size of the display means is considerably limited, and the amount of information that can be displayed at one time is large. Is decreasing. For example,
If you want to see the A4 size FAX data that is commonly used in a portable FAX that can only display A6 size,
There was a problem that the display screen had to be switched at least four times and the operation was very troublesome.

An object of the present invention is to solve the above problems and to provide an information terminal device in which the amount of information that can be displayed at one time is increased by compressing received data.

[0006]

The present invention has the following constitution in order to achieve the above object.

Paper size detection means for detecting the amount of image data as a paper size at the time of data reception, compression ratio determination means for determining the compression ratio of the received data in accordance with the paper size detected by the detection means, The data compression means is configured to compress the received data at the compression rate determined by the compression rate, and the data output means to output the data compressed by the compression means.

[0008]

With the above configuration, data compression is performed according to the size of the received data and the display device, the optimum compression ratio is selected by using the character recognition means, and the output of the LCD or the like is performed at the time of output. Compressed data is used for the display device to reduce the number of times of display, and unprinted data is used for the printing device such as a printer.

[0009]

(Embodiment 1) An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a block diagram of an information terminal device showing a first embodiment of the present invention. 101 is a receiving means for receiving image data such as facsimile data, 102
Is a buffer means for temporarily storing the received image data, 103 is a paper size detecting means for detecting the paper size of the image data received by the receiving means 101, and 104 is a page data amount for detecting the received data capacity. Measuring means, 105 is a displayable data amount storage means for storing the displayable data amount on a display means such as LCD, and 106 is a data amount of the received data detected by the data amount comparing means 104 and a displayable data amount storage A data comparing means for comparing the displayable data amount stored in the means 105, 107 is based on the received data size detected by the paper size detecting means 103 so that all the received data is contained in the display area of the display means as much as possible. A compression rate selecting means for determining the compression rate of the received data, 108 compresses the received data at the compression rate selected by the compression rate selecting means 107. Data compressing means fit, 109 is a data output means for displaying the received data compressed by the data compressing means 108 to the data display device such as an LCD. Blocks not directly related to the present invention are omitted from the block diagram.

Receiving means 101 by commonly used means
The facsimile data received by the
After being stored in 102, it is sent to the paper size detecting means 103. The paper size detecting means 103 compares the received data amount for each page and the displayable data amount stored in the displayable data amount storage means 105 at one time with the data amount comparing means 106.
The data amount of the received data is detected by making a comparison in. The data comparison performed here is realized by a simple calculation of the memory capacity required for the received data and the memory capacity required for the amount of data that can be displayed on the display unit at one time.

The comparison result of the data comparison means 106 is output as, for example, an integral multiple (n) of the displayable data amount stored in the displayable data amount storage means 105 at one time, and the compression ratio selection means 107 receives the received data. Compression rate (1 / n)
Is selected. The data compression means 108 is a compression rate selection means.
According to the compression ratio selected by 107, a data compression operation, which is usually well performed and can be easily realized by those skilled in the art, is performed on the received data, and the data after the compression operation is output to the data output means 109.

In the present embodiment, for example, when the data output means 109 is composed of a liquid crystal display device (LCD) and the displayable data amount is A6 size, the displayable data amount storage means 105 stores A6 data. When the number of memory capacity required for the size data is stored and the A4 size data is received by the receiving means 101, the data amount comparing means 106
Is output, that is, the output of the paper size detecting means 103 is the result of n = 4. Therefore, the compression rate becomes 1 / n = 1/4, and the data compressing means 108 compresses the A4 size data into the A4 size by thinning out one line each in the vertical direction and the horizontal direction. Then, the data output unit 109 can display all the data for one page.

(Second Embodiment) Next, an information terminal device according to a second embodiment of the present invention will be described.

In the first embodiment, the received data is compressed according to the size of the display means such as LCD. However, when the compressed operation is simply performed, if the received data has fine character information, the characters are crushed. There was a problem that it would occur. In this embodiment, a means for solving the problem of character crushing will be described.

FIG. 2 is a block diagram of an information terminal device showing a first embodiment of the present invention. In the figure, blocks having the same functions as those in the first embodiment are designated by the same reference numerals, and the description thereof will be omitted.

In FIG. 2, 201 is a data compression means 108.
Character recognition of the received data compressed by, and a character recognition determination means for determining whether the compression result of the data compression means 108 is optimal, 202 is determined by the determination result of the character recognition determination means 201, It is a compression rate selection unit that selects the compression rate such that the compression rate is lower than the compression rate that was previously selected.

When the paper size is detected by the same operation as described in the first embodiment and the first compression operation is performed, the output of the data compression means 108 is the character recognition determination means 201.
Entered in. The character recognition determination means 201 performs a character data recognition operation, and determines whether the selection of the compression ratio is appropriate for the received data. This determination means
For example, it can be realized by detecting the ratio of unrecognizable characters to all recognition target characters in the character recognition result for one page. That is, the judgment result (unrecognizable rate) is 2
When it is 0% or 25% or more, a signal indicating that the current compression rate is negative is output to the compression rate selecting means 202. However, the judgment standard of the unrecognizable rate is not limited to 20% or 25%, and although not shown, the user of the information terminal device can freely set it.

When the character recognition determining means 201 determines that the compression rate is not appropriate, the compression rate selecting means 202 determines that the next compression rate is 1/3 if the previous compression rate is, for example, 1/4.
Alternatively, the recognition rate in the character recognition determining means 201 is lowered to 1/2 to increase the recognition rate. When the next compression rate is reduced to 1/2 by such a method, the received data of A4 size is A5.
Since the data is compressed to the size, one page of data cannot be viewed at a time by an output unit such as an A6 size LCD, but it can be viewed by switching the screen once. If the compression rate is selected to 1/1 according to the result of the character recognition determination means, the compression operation in the data compression means 108 and the recognition operation in the character recognition determination means are not performed, and the received data is directly output to the output means. Will be out.

(Third Embodiment) Next, an information terminal device according to a third embodiment of the present invention will be described.

In the second embodiment, although the character recognition means is provided, it is used only for the judgment of the compression rate selection means 107. In the present embodiment, a text conversion means using the character recognition determination means 201 is also provided.

FIG. 3 is a block diagram of an information terminal device showing a third embodiment of the present invention. In FIG. 3, blocks having the same functions as those of the first and second embodiments are designated by the same reference numerals and their description is omitted.

In FIG. 4, 301 and 303 are buffer means for temporarily storing data, and 302 is data compression means.
Based on the recognition result of the character recognition determination means 201, the output of 108 is
Text data conversion means for converting to text data, 30
Reference numeral 4 is a data selection means for switching and outputting the data before text conversion and the data after text conversion according to a switching signal from the control signal input terminal 305.

The data compressed by the same operation as that described in the first and second embodiments is converted into text data by the text conversion means 302 based on the judgment result of the character recognition judgment means 201. The data selecting means 304 selects and outputs the compressed data temporarily stored in the buffer means 301 and the text data temporarily stored in the buffer means 301 by a switching signal from the control signal input terminal 305. The switching signal input to the control signal input terminal 305 is not shown in the figure, but if the character recognition rate is low, the compressed data is selected based on the determination result of the character recognition determination means 201, and if the character recognition rate is high, it is selected. The configuration may be such that the user of the mobile terminal is arbitrarily switched by controlling to select text data or by looking at the output result to the output means such as LCD.

With the above configuration, when the quality of the received data is poor and the recognition rate after compression is low, the output data of the data compression means 108 is output to the data output means 109, and the quality of the received data is compressed well. If the subsequent recognition rate is high, the data output means 10 converts the data converted into text data.
By outputting to 9, the received data can always be checked in the optimum form on the screen of the LCD or the like.

(Embodiment 4) Next, an information terminal device according to a fourth embodiment of the present invention will be described.

In the first to third embodiments, only the liquid crystal display by the LCD or the like has been described as the output means, but in the present invention, the output means is not limited to the liquid crystal display by the LCD or the like. Printer, CRT monitor,
It goes without saying that all possible output devices such as computers are included.

FIG. 4 is a block diagram of an information terminal device showing a fourth embodiment of the present invention. In FIG. 4, blocks having the same functions as those in the previous embodiment are designated by the same reference numerals, and the description thereof will be omitted. 401 is a data output means, 402 is a printer for printing received data, and 403 is an LCD for liquid crystal display.
Is.

The reception data compressed by the same operation as in the first embodiment is output to the LCD display device 403, and the reception data before compression is output as it is to the printer for printing. The compressed data is output to a liquid crystal display device that is smaller than the paper size of the received data to reduce the number of display screen changes, and the received data is output to the printer, which is the printing unit, as is. It is possible to improve the efficiency of the above and prevent image deterioration due to printing of compressed data.

[0030]

As described above, by compressing the received data according to the display size of the display device, it is possible to reduce the number of times of display on the small screen, and
Since the data before compression is used at the time of printing, the printed image does not deteriorate.

[Brief description of drawings]

FIG. 1 is a block diagram of an information terminal device showing a first embodiment of the present invention.

FIG. 2 is a block diagram of an information terminal device showing a second embodiment of the present invention.

FIG. 3 is a block diagram of an information terminal device showing a third embodiment of the present invention.

FIG. 4 is a block diagram of an information terminal device showing a fourth embodiment of the present invention.

FIG. 5 is a schematic block diagram of a conventional technique.

[Explanation of symbols]

 103 paper size detecting means 104 1 page data amount measuring means 105 displayable data amount storing means 106 data amount comparing means 107, 202 compression ratio selecting means 108 data compressing means 109 data output means 201 character recognition determining means 302 text converting means 304 data Selector 305 Control signal input terminal 402 Printer 403 LCD

Claims (4)

[Claims] 1. A paper size detecting means for detecting a paper size from the amount of image data when receiving data, and a paper size detected by the paper size detecting means,
Compression rate determining means for determining the compression rate of the received data,
An information terminal device comprising: a data compression unit that compresses the received data according to the compression rate determined by the compression rate determination unit; and a data output unit that outputs the data compressed by the data compression unit. . 2. The information terminal device according to claim 1, further comprising a character recognizing unit, wherein the compression rate is changed when the character recognizing unit cannot recognize a character compressed by the data compressing unit. . 3. When the character compressed by the data compressing means can be recognized, the text converting means for converting the character into text data, the text data and the character data before text conversion are arbitrarily selected. 3. The information terminal device according to claim 2, further comprising a data selection unit for outputting. 4. A data printing means and a data display means are provided as the data output means. When the received data is printed by the data printing means, the data before compression is selected, and the data display means is used to select the data. The information terminal device according to claim 1, wherein compressed data is selected when the received data is displayed.