JPS6163148A - Converter of facsimile response - Google Patents

Abstract

PURPOSE:To shorten significantly the time of encoding process by not transmitting an encoding picture signal to a character pattern memory but advancing an address pointer with respect to a row memory by one when character codes of one line are all blank codes. CONSTITUTION:When a control circuit 5 starts conversion of an encoding picture signal into a pattern picture signal, said circuit 5 clears a row memory 4 and inputs the encoding picture signal through an I/O interface 2. When the character code of the encoding picture signal is not blank, said character code is transmitted to a character pattern memory 3, the pattern picture signal is read out and written in the memory 4. When the character code is blank, the control circuit 5 will not the encoding picture signal to the memory 3 but advances an address pointer with respect to the memory 4 by one.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a facsimile conversion device. In particular, the present invention relates to a facsimile response conversion device that converts a document expressed in character codes into a black and white binary pattern image signal, encodes this pattern image signal, and outputs the encoded pattern image signal to a facsimile terminal.

[Conventional technology]

The facsimile response conversion device is, for example, JISC6226
Converts a document (coded image signal) expressed in a character code like do. This allows document information to be output to a facsimile terminal.

A conventional facsimile response conversion device converts a coded image signal into a pattern image signal in the following manner. first,
A character pattern memory stores character patterns and outputs character patterns corresponding to input character codes. This character pattern is stored in a row memory in units of rows of the coded image signal. The contents stored in this row memory are converted into a facsimile signal by modified Huffman encoding in units of facsimile scanning lines.

As shown in FIG. 3, character codes inputted to such a facsimile response conversion apparatus may contain a mixture of characters having different character heights within a line.

In order to facilitate processing in such a case, conventional facsimile response conversion devices erase the contents of the line memory when starting conversion from character code to character pattern. This causes the contents of the row memory to be in the same state as if a blank had been written.

[Problem that the invention seeks to solve]

However, in conventional facsimile response conversion devices, blank codes are processed in the same way as other character codes, even though blanks are written in the line memory in advance as described above. That is, for a blank code, the character pattern is read out from the character pattern memory and stored in the line memory in the same way as for other character codes. For this reason,
There was a drawback that unnecessary processing time was required.

In particular, facsimile response conversion devices without a horizontal tab function frequently use blank spaces for character alignment, and these blank spaces have the disadvantage of significantly slowing down the processing speed.

SUMMARY OF THE INVENTION An object of the present invention is to provide a facsimile response conversion device that can solve the above-mentioned drawbacks and efficiently convert character codes to character patterns.

[Means for solving problems]

The facsimile response conversion device of the present invention includes means for inputting a character code from the outside, and the character code inputted by this means is given to an address input, and the address has a black and white binary pattern image signal corresponding to the character code in advance. A recorded character pattern memory, a line memory that stores pattern image signals output by this character pattern memory in units of character code lines, and a control that controls input/output of the character pattern memory and specifies addresses of the line memory. In the facsimile response conversion apparatus, the control circuit includes means for detecting that the character code inputted by the inputting means is a blank code, and when the detecting means detects a blank code, The present invention is characterized in that it includes means for stopping the operation of the character pattern memory and updating its address pointer without storing the pattern image signal in the line memory.

[Effect]

In the facsimile response conversion apparatus of the present invention, the control circuit detects a blank code, and for the blank code, only the address pointer of the line memory is updated without reading out the character pattern from the character pattern memory.

〔Example〕

Next, the present invention will be described in detail with reference to Examples.

FIG. 1 is a block diagram of main parts of a facsimile response conversion apparatus according to an embodiment of the present invention.

The input/output terminal 1 is connected to the input/output interface 2.

Input/output interface 2 , character pattern memory 3 , line memory 4 and control circuit 5 are connected to bus 6 .

A coded image signal including a character code is input to the input/output terminal 1 . The input/output interface 2 sends this coded image signal to the bus 6. The character pattern memory 3 stores in advance a pattern image signal represented by a black and white binary dot matrix corresponding to the character code, and outputs the pattern image signal corresponding to the character code given to the address input to the bus 6. do. Line memory 4 is character pattern memory 3
The pattern image signal outputted by is stored row by row. The control circuit 5 includes a human output interface 2 and a character pattern memory 3.
and controls the row memory 4. The bus 6 transmits control signals and data to each section.

FIG. 2 is a flowchart showing the operation by the control circuit 5.

This figure shows the operation of converting coded image signals for -rows into pattern image signals.

The control circuit 5 clears the row memory 4 when starting the conversion of the coded image signal for - rows into the pattern image signal.

Thereafter, the control circuit 5 inputs the coded image signal via the input/output interface 2. If the character codes of the coded image signal are not blank codes, the character codes are sent to the character pattern memory 3, the pattern image signal is read out, and this pattern image signal is written into the line memory 4. Addressing for this writing is performed in the order of the facsimile scanning direction.

If the character code is a blank code, the control circuit 5 does not send this coded image signal to the character pattern memory 3, but advances the address pointer for the line memory 4 by one.

If the data on bus 6 is 8 pins, then 24 x 24
When handling a dot character font, it is necessary to read 72 bytes of character pattern data from the character pattern memory 3 and write it while updating the address in the line memory 4. However, if the character code is a blank code, the line It is only necessary to update the address pointer to memory 4.

〔Effect of the invention〕

As described above, the facsimile response conversion apparatus of the present invention has the advantage of being able to significantly shorten the encoding process when all the character codes in the - line are blank codes. Therefore, it becomes possible to output document information to a facsimile terminal at high speed, which is highly effective in applying facsimile to data communication.

[Brief explanation of drawings]

FIG. 1 is a block diagram of main parts of a facsimile response conversion apparatus according to an embodiment of the present invention. FIG. 2 is a flowchart of the operation of converting one row of coded image signals into pattern image signals by the control circuit. FIG. 3 is a diagram showing an example of a character code. 1... Input/output terminal, 2... Input/output interface,
3...Character pattern memory, 4...Line memory, 5...
- Control circuit, 6... bus.

Claims (1)

[Claims] (1) A means for inputting a character code from the outside, and the character code inputted by this means is given to an address input, and at that address, a character is recorded in advance with a black and white binary pattern image signal corresponding to the character code. It includes a pattern memory, a line memory that stores the pattern image signal output by the character pattern memory in units of character code lines, and a control circuit that controls the input/output of the character pattern memory and specifies the address of the line memory. In the facsimile response conversion device, the control circuit includes means for detecting that the character code inputted by the inputting means is a blank code, and when the detecting means detects a blank code, the control circuit controls the character pattern memory. and means for updating the address pointer without storing the pattern image signal in the line memory.