JPH0392071A - Facsimile response equipment - Google Patents

Abstract

PURPOSE:To prevent mis-output of a data of other line by applying in-byte rotate of a data by a number corresponding to a line number when a data received from a host is stored in a buffer corresponding to the line and applying inverse direction rotate processing when the data is read from the buffer. CONSTITUTION:A counter host interface section 1 rotates a data by a bit number corresponding to a line number for each received data byte and stores the result to buffers 2-4 corresponding to the line. When a data in a relevant buffer is outputted to a facsimile equipment terminal, at first facsimile terminal control sections 5-7 take a protocol with a facsimile equipment terminal and read a data in the buffer and send the data to the facsimile equipment terminal. Then the facsimile terminal control sections 5-7 apply inverse rotate by the same bit number as that implemented at buffer storage for each readout data byte and send the data to the facsimile equipment terminal. Thus, the output of the facsimile pattern of the content of other line as it is prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a facsimile response device that receives facsimile image signals as input, performs communication control procedures with facsimile terminals, and multiplexes image output over multiple lines. [Prior Art] A conventional facsimile response device receives character code information or a facsimile image signal from a host device, converts the code information into a character pattern and then performs facsimile encoding, and in the case of a facsimile image signal, Performs encoding method conversion, etc. After that, the procedure is repeated with the facsimile terminal connected to the line, and the operation of outputting the image signal is performed by multiplexing multiple lines. [Problems to be Solved by the Invention] The facsimile answering device described above is composed of firmware, and a microcomputer controls each part within the device according to a built-in program. It is connected to the host device via a bus such as GPIB, and exchanges control data, image signal data, etc. through this bus. For example, if we consider the case where image signal data received from a host device is output as is to a facsimile terminal, it is transmitted from the host device through a bus to a fixed size (for example, 8K bytes).
Receive data in blocks of . This data is temporarily stored in a buffer memory allocated to each line on the internal memory of the device.

Thereafter, the facsimile terminal control unit performs procedures with the facsimile terminal, and then reads out the data in the buffer and outputs it to the facsimile terminal. The above buffers are usually allocated in system memory by dividing addresses according to lines. Therefore, if you accidentally store data in the buffer of another line when receiving data from a host device, or read data from the buffer of another line when outputting to a facsimile terminal, the facsimile screen of the contents of the other line may be If it is output as is, it will cause a serious problem with the service. [Means for Solving the Problems] The facsimile response device of the present invention comprises: a host interface section for transmitting and receiving data between a buffer memory within the device and a host device; and a host interface section for transmitting and receiving data between the buffer memory and a facsimile terminal. A portion of the facsimile terminal control section that accesses the buffer memory includes a rotation circuit that rotates data sent to and received from the buffer memory.

〔Example〕

Next, the present invention will be explained with reference to the drawings. FIG. 1 is a block diagram of one embodiment of the present invention.

This embodiment receives a facsimile image signal as input, has a facsimile terminal control circuit and a control circuit that controls this, converts the encoding method of the facsimile image signal as necessary, and outputs it to a facsimile terminal (FAX). In a facsimile answering device that performs multiplexing of multiple lines, data is exchanged between the buffer memories 2, 3.4 in the device and a higher-level device, and the upper-level interface unit 1 and buffer memory 2
, 3.4 and the facsimile terminal, the facsimile terminal (FAX) control unit 5, which accesses the buffer memory in the device of 6.7, inputs the image signal data and the line number of the data. The system is configured with a rotation circuit that rotates image signal data according to a predetermined algorithm according to the input line number. FIG. 2 is a diagram showing the procedure for storing and reading data in the buffer in this embodiment. The facsimile response device receives image signal data from the host device through the host interface section 1. At this time, the upper-level interface unit 1 rotates each byte of received data by the number of bits corresponding to the line number, and then stores the data in buffers 2 to 4 corresponding to the line. When outputting the data in the corresponding buffer to the facsimile terminal, the facsimile terminal controllers 5 to 7 first perform procedures with the facsimile terminal, then read out the data in the buffer and transmit it to the facsimile terminal. Here, the facsimile terminal control units 5 to 7 rotate each byte of read data in the opposite direction by the same number of bits as when storing the data in the buffer.
The data is sent to a facsimile terminal.

〔Effect of the invention〕

As explained above, when the facsimile response device of the present invention stores data received from a host in a buffer corresponding to a line, it performs intra-byte rotation of the data by a number corresponding to the line number, and then reads the data from the buffer. By performing reverse rotation processing, even if data is read from the buffer of another line by mistake, the correct data will not be obtained and a screen that can be correctly recognized will not be output to the facsimile terminal. This has the effect of preventing erroneous output of data from other lines.

[Brief explanation of drawings]

FIG. 1 is a block diagram of an example of a facsimile response device according to the present invention, and FIG. 2 is a diagram showing processing when storing and reading data in a buffer according to the present embodiment. 1... Upper device interface unit, 2-4... Line compatible buffer memory,
5-7...FAX.

Claims (1)

[Claims] a higher-level interface unit that exchanges data between a buffer memory in the apparatus and a higher-level device; and a part that accesses the buffer memory of a facsimile terminal control unit that exchanges data between the buffer memory and a facsimile terminal; 1. A facsimile response device comprising a rotation circuit for rotating data transmitted and received.