JPH0568141B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field] The present invention relates to a data communication device, and more particularly to a data communication device equipped with an alarm sound generation function.

[Prior art]

An alarm sound is generated when a failure occurs in the data communication device of the facsimile machine or when an error occurs in the procedure.

However, in the past, a signal sound for generating this alarm sound was provided independently and separately.

The configuration of such a conventional facsimile device is shown in FIG.

In FIG. 1, reference numeral 1 denotes a line, which is connected to the fax machine side via the network control device 2. In FIG. This network control device 2 plays the role of switching the line between the telephone 3 side and the facsimile device side.

A modem 4 is connected to the network control device 2.
The modem 4 modulates and demodulates signals during transmission and reception.

Reference numeral 5 denotes a CPU (central processing unit) that controls each part of the facsimile machine, and in addition to the modem 4, it also operates a document reading part 6, an image information recording part 7,
It is connected to a memory 8 that stores various data.

The reference numeral 9 is a sound source for generating an alarm sound of a specific frequency, and is under the control of the CPU 5.

The signal generated by the sound source 9 is amplified by an amplifier 10 and is heard by the operator as an audible warning sound from a speaker 11.

However, if such a structure is adopted, a separate sound source from the facsimile device is connected to the device, and
It must be placed under the control of CPU5.

As a result, not only extra equipment is required, but also a complicated control circuit is required, resulting in a heavy economic burden.

〔the purpose〕

The present invention was made in order to eliminate the above-mentioned drawbacks of the conventional technology, and an object of the present invention is to provide a data communication device configured to be able to generate an alarm sound without requiring a separate sound source. There is.

〔Example〕

Hereinafter, details of the present invention will be explained based on embodiments shown in the drawings.

In the present invention, attention has been focused on the fact that a modem that constitutes a part of a facsimile machine basically has various tonal signals.

Since this tonal signal contains sine wave signals of multiple types of frequencies in the audible range, if this frequency is extracted, it can be used as an alarm sound.

An embodiment of the present invention utilizing such a principle is shown in FIG.

In FIG. 2, the same or corresponding parts as in FIG. 1 are designated by the same reference numerals, and their explanations will be omitted.

In this embodiment, a switch SW1 is provided between the network control device 2 and the modem 4, and the switch SW1 can be opened and closed by the switch control device 12.

This switch control device 12 is under the control of a CPU 5, and a switch SW2 is connected to the CPU 5 to select whether or not to generate an alarm sound.

Next, the operation of this embodiment configured as follows will be explained with reference to the flowchart shown in FIG.

That is, first, in step S1, it is detected whether or not the switch SW2, which selects whether or not to generate an alarm sound, is turned on. If it is turned on, the process proceeds to step S2, and the CPU 5 controls the switch control device 12. The switch SW1 is connected to the speaker side via the switch SW1, and if SW2 is not turned on, the control ends.

Next, the process proceeds to step S3, where the modem 4 generates a signal of a specific frequency.

This signal has a frequency in the audible range, is amplified by the amplifier 10, and is generated from the speaker 11 as an alarm sound.

Subsequently, in step S4, after the signal has been transmitted for a certain period of time, the modem 4 stops transmitting the signal.
In step S5, the switch SW1 is returned to the network control device 2 side to end the control of the alarm sound generation.

By the way, since the tonal signal includes a plurality of types of audible frequencies as described above, it is possible to output not only a sound of one frequency like a buzzer sound but also a sound of a plurality of different pitches.

〔effect〕

As is clear from the above description, according to the present invention, various alarm sounds, which were generated by installing a dedicated sound source, can be generated using a modem, which is indispensable for data communication equipment, thereby making it possible to generate alarm sounds that were not previously required. This eliminates the need for a sound source dedicated to generating signal sounds, which simplifies the configuration of the device and reduces costs.Also, when making the modem emit an alarm sound, the modem output can be switched to the speaker side. When the output of the alarm sound is finished, the output of the modem is switched to the public line side, which has the excellent effect of eliminating unnecessary sounds other than the alarm sound from the speaker means.

[Brief explanation of the drawing]

Figure 1 is a block diagram explaining the conventional structure, Figure 2 is a block diagram explaining the conventional structure.
The figure is a block diagram for explaining one embodiment of the present invention, and FIG. 3 is a flowchart for explaining the control operation of the present invention. 1...Line, 2...Network control device, 3...Telephone, 4...
Modem, 5...CPU, 10...Amplifier, 11...Speaker, 12...Switch control device.

Claims (1)

[Scope of Claims] 1. A modem that modulates and demodulates image signals and procedure signals in order to transmit and receive them via a public line; a control means that causes the modem to generate alarm sounds other than the image signals and procedure signals; speaker means for extracting, amplifying and outputting the alarm sound that has been issued; and a speaker means controlled by the control means to switch the output of the modem from the public line side to the speaker means side before the modem sends out the alarm sound, and the output of the modem is switched from the public line side to the speaker means side, A data communication device comprising a switching means for switching the output of the modem to the public line side after the generation of sound ends.