JPH08139940A - Facsimile equipment - Google Patents

Abstract

PURPOSE: To conduct efficient print-out by sending a received image to a printer interface by a format of data optimum to the state of the received image. CONSTITUTION: A received image is coded and the coded image is stored in an image memory 3, and a code quantization per one line of the coded image in the 1st memory 3 is detected. When the code quantity per line obtained through the detection is larger than a preset code quantity, raw image data obtained by decoding the image in the image memory 3 are sent to a printer interface 6. Conversely when smaller, the raw image data obtained by decoding the image in the image memory 3 are coded again and the coded data are sent to the printer interface 6.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a facsimile machine.

[0002]

2. Description of the Related Art In a conventional facsimile apparatus, when image information is transferred to a printer in order to record a received image, a fixed data format is used. That is, specifically, there are a case of using raw image data obtained by decoding a received image and a case of using data obtained by decoding a received image and then compressing it into a code designated by a printer interface.

[0003]

However, in the above-mentioned conventional example, since the format of the data sent to the printer interface is fixed to the device regardless of the contents of the image data, for example, the raw image data is sent to the printer interface. In this type of device, even if the received image is suitable for simple encoding, the device load for sending to the printer interface is large compared to the case where the image is sent because raw image data is sent. turn into.

On the contrary, in a device of the type that sends encoded image data to the printer interface, even if the received image is complicated and is not suitable for encoding, the encoded image data is transmitted in order to be transmitted. The device load for sending to the compliant printer interface becomes heavier than when sending raw image data as it is.

For this reason, there is a drawback in that the printer's original recording speed cannot be achieved.

It is an object of the present invention to provide a facsimile apparatus capable of sending an optimum data format to a printer interface according to the state of a received image and performing efficient printout.

[0007]

The first invention of the present application is
The received image is encoded and stored in the first memory, and
The code amount per line of the image coded in the memory is detected by the detecting means. When the obtained code amount per line is larger than the preset code amount by this detecting means, the raw image data obtained by decoding the image in the first memory is sent to the printer interface.

When the code amount per line obtained by the detecting means is smaller than the preset code amount, the raw image data obtained by decoding the image in the first memory is further encoded. , And sends this encoded data to the printer interface.

As a result, only an image having a high coding efficiency is sent to the printer interface, and the printer can print at high speed. Further, according to the second invention of the present application, the received image is encoded and stored in the first memory, and the image stored in the first memory is decoded to create raw image data. Then, the decoded raw image data is encoded into a code according to the printer interface,
When the code amount of the created line is larger than the preset code amount, the raw image data obtained by decoding the image in the first memory is sent to the printer interface.

Further, the decoded raw image data is encoded into a code corresponding to the printer interface, and when the code amount of the created line is smaller than the preset code amount, it is encoded into the code corresponding to the printer interface. And sends the image data to the printer interface.

As a result, even if the code data of the first memory and the code data sent to the printer interface have different formats, only the efficient image is coded in the code used by the printer interface. High-speed printing of the printer becomes possible.

Further, according to the third invention of the present application, the received image is encoded and stored in the first memory, and the encoded image is decoded in the first memory to create raw image data. Then, at the time of this decoding, predict the encoded data amount,
When the predicted code amount is larger than the preset code amount, the decoded raw image data is sent to the printer interface.

When the predicted code amount is smaller than the preset code amount, the decoded raw image data is encoded into a code according to the printer interface, and the code amount of the created line is set in advance. If it is larger than the code amount, the raw image data obtained by decoding the image in the first memory is sent to the printer interface.

Further, the decoded raw image data is encoded into a code corresponding to the printer interface, and when the code amount of the created line is smaller than the preset code amount, it is encoded into the code corresponding to the printer interface. The generated image data is sent to the printer interface.

Thus, even if the format of the code data in the first memory and the code data to be sent to the printer interface are different, the printer interface is used without wastefully operating the encoding means for the decoded image data. In this code, only efficient images are coded, and high-speed printing by the printer becomes possible.

[0016]

FIG. 1 is a block diagram showing an embodiment of the present invention.

In FIG. 1, a CPU 1 controls the entire system, and a ROM 2 is a memory that stores a control program for specifying the operation of the CPU 1. The image memory 3 is a memory for accumulating images, and R
The AM 4 is a memory that provides a work area necessary for the operation of the program.

The NCU / modem 5 controls the connection of lines and modulates / demodulates transmitted / received data. The printer interface 6 is an interface for connecting to the printer 7. The printer 7 prints out a received image or the like, and can switch the raw image data and the encoded data line by line via the printer interface 6 and input the data.

Further, the CPU 1, ROM 2, and
The image memory 3, the RAM 4, the NCU / modem 5, and the printer interface 6 are bus-connected. Further, the printer 7 is connected by the printer interface 6.

FIG. 2 is a first diagram corresponding to claim 1 of the present invention.
It is a flow chart which shows operation of an example. The operation of this embodiment will be described below.

First, in step 201, the image received by controlling the NCU / modem 5 is decoded / encoded and stored in the image memory 3. Then, in step 202, the data amount of the encoded image stored in the image memory 3 in step 201 is divided by the number of lines of the image to calculate the code amount per line.

Next, in step 203, step 20
The code amount per line obtained in 2 is compared with a preset code amount, and if large, the process branches to step 204, and if small, the process branches to step 205.

Steps 204 and 205 are processes for decoding the image stored in step 201 into raw image data. Then, when the process of step 204 is completed, the process proceeds to step 206, and when the process of step 205 is completed, the process proceeds to step 207.

In step 206, the raw image data generated in step 205 is encoded into a code used by the printer 7, and the process proceeds to step 207.

In step 207, the code created in step 206 or the raw image created in step 204 is sent to the printer 7.

FIG. 3 shows a second aspect of the present invention, which corresponds to claim 2.
It is a flow chart which shows operation of an example. The operation of this embodiment will be described below.

First, in step 301, the image received by controlling the NCU / modem 5 is decoded / encoded and stored in the image memory 3. Then, in step 302, the encoded image stored in the image memory 3 in step 301 is set to 1
Line decoding is performed to create a run length table.

Next, in step 303, step 30
Raw image data is created from the run length table generated in 2. Then, in step 304, step 3
The raw image data generated in 03 is encoded into a code used by the printer 7.

Next, in step 305, step 30
The code amount per line of the code data generated in step 4 is compared with a preset code amount, and if it is large, the process branches to step 306, and if it is small, the process branches to step 307.

Then, in step 306, step 3
The raw image data created in 03 is sent to the printer 7.

Further, in step 307, step 30
The code data created in 4 is sent to the printer 7.

The above operation is repeated until the final line (S
308), the processing is completed by the end of all lines.

FIG. 4 is a first diagram corresponding to claim 1 of the present invention.
It is a flow chart which shows operation of an example. The operation of this embodiment will be described below.

First, in step 401, the NCU / modem 5 is controlled to decode / encode the received image and store it in the image memory 3. Then, in step 402, the encoded image stored in the image memory 3 in step 401 is decoded by one line to create a run length table. Further, in step 403, raw image data is created from the run length table created in step 402.

Next, in step 404, step 40
The size per line of the run length table data generated in 3 is compared with a preset size, and if it is large, it is determined in step 408, and if it is small, it is determined in step 4
The process branches to 05.

At step 405, the raw image data generated at step 403 is encoded into a code used by the printer 7. Then, in step 406, step 405
The code amount per line of the code data generated in step 1 is compared with a preset code amount.
08, if smaller, the process branches to step 407.

In step 408, the raw image data created in step 403 is sent to the printer 7.

Further, step 407 is step 405.
The code data created in step 3 is sent to the printer 7. The above operation is repeated until the final line (S409), and the process is completed by the end of all lines.

[0039]

As described above, according to the first invention of the present application, the processing to be performed in a state where the data sent to the printer interface is not compressed becomes small, and high-speed printing by the printer becomes possible.

Further, according to the second invention of the present application, the amount of data sent to the printer interface becomes small,
High-speed printing of the printer becomes possible.

Further, according to the third invention of the present application, the amount of data to be sent to the printer interface becomes small, and the processing amount of data creation to be sent to the printer interface becomes small, so that high-speed printing by the printer becomes possible. .

[Brief description of drawings]

FIG. 1 is a block diagram showing an embodiment of the present invention.

FIG. 2 is a flowchart showing an operation in the first embodiment of the present invention.

FIG. 3 is a flowchart showing an operation in the second embodiment of the present invention.

FIG. 4 is a flowchart showing an operation in the third embodiment of the present invention.

[Explanation of symbols]

 1 ... CPU, 2 ... ROM, 3 ... Image memory, 4 ... RAM, 5 ... NCU / modem, 6 ... Printer interface, 7 ... Printer.

Claims (3)

[Claims] 1. Encoding / accumulating means for encoding and accumulating a received image in a first memory; decoding means for decoding the image accumulated in the first memory; decoding by said decoding means Decoded data sending means for sending the encoded image to the printer interface; Encoding means for encoding the image decoded by the decoding means; Sending the image encoded by the encoding means to the printer interface Coded data transmission means; detection means for detecting the code amount per line from the code amount of the image coded in the first memory by the coding / accumulation means; and obtained by the detection means. A facsimile device, comprising: a selection unit that selects the transmission unit to the printer interface in page units according to the code amount per line. 2. Encoding / accumulating means for encoding and accumulating a received image in a first memory; decoding means for decoding the image accumulated in the first memory; decoding by said decoding means Decoded data sending means for sending the encoded image to the printer interface; Encoding means for encoding the image decoded by the decoding means; Sending the image encoded by the encoding means to the printer interface Coded data transmitting means; when coded by the coding means,
Facsimile facsimile comprising: detection means for detecting the generated code quantity; and selection means for selecting the transmission means to the printer interface in line units according to the code quantity obtained by the detection means. apparatus. 3. Encoding / accumulating means for encoding and accumulating a received image in a first memory; decoding means for decoding the image accumulated in said first memory; decoding by said decoding means Decoded data sending means for sending the encoded image to the printer interface; Encoding means for encoding the image decoded by the decoding means; Sending the image encoded by the encoding means to the printer interface Coded data sending means; when decoding by the decoding means,
A predicting unit for predicting a code amount when encoded by the encoding unit, and a selecting unit for selecting a transmitting unit to the printer interface in line units according to the code amount obtained by the predicting unit; A facsimile machine characterized by having.