JPH11252217A - Terminal equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide the terminal equipment of which the manufacture cost is reduced and by which sound volume in a telephone function is adjusted very easily without the need for troublesome operation. SOLUTION: A facsimile equipment as the terminal equipment has a telephone function that makes a speech via a receiver in a line closing state. The facsimile equipment is provided with a control section that discriminates whether or not the line closing state is set. The control section operates prescribed keys 16a, 16b on an operation panel unit 15 as sound volume adjustment keys in the case of the line closing state and allows the keys 16a, 16b to act like function keys for resolution change and incoming mode change when the line is not closed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a terminal device including, for example, a facsimile machine, a telephone, and the like, and more particularly to a terminal device capable of effectively using a volume control key in a telephone function or the like.

[0002]

2. Description of the Related Art In recent years, facsimile machines have become multifunctional.
Equipped with various functions such as copy function and answering machine function,
One device can perform each function. In this facsimile machine, a number of keys are provided on the front panel to execute each function. However, providing independent keys corresponding to each function causes a cost increase. In addition, when setting each function state by a key operation in combination with a function key, the number of keys is reduced and cost is reduced, but operability generally deteriorates.

[0003]

In particular, the volume control key for the telephone function is an indispensable key for improving the usability of the user. However, this key is not so frequently used and costs are low. Considering the up-up and the like, there is little need to provide an independent key. On the other hand, in the case of adjusting the volume of the telephone by simply operating the keys in combination with the function keys, there is a problem in that the user often operates by looking at the manual or the like one by one because of the low frequency of use, which requires complicated work. Further, in a terminal device having a function of outputting sound via a speaker, the same can be said for the volume adjustment key of the terminal device as well as the volume adjustment key of the telephone function.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned conventional problems. It is possible to reduce the manufacturing cost by effectively using a volume control key, and to extremely control the volume of a telephone function or the like. It is an object of the present invention to provide a terminal device that facilitates the terminal device.

[0005]

According to the first aspect of the present invention, there is provided a terminal device capable of communicating via a handset in a line closed state. Line state determining means for determining whether the line is closed or not, and when the line is closed, a predetermined key is operated as a volume control key, and the line is disconnected. Control means for operating as other function keys in the case of a state. In such a terminal device,
The control means activates a predetermined key as a volume control key when the line state determination means determines that the line is closed, but when the line state determination means determines that the line is not closed. , A predetermined key is operated as another function key. For this reason, the user can adjust the volume without any troublesome work as long as the user operates the volume adjustment key while the line is closed. Further, since the volume control key plays a role of other function keys other than the volume control, the volume control key can be used effectively. As a result, the number of keys is reduced and the manufacturing cost is reduced.

According to a second aspect of the present invention, in the terminal device according to the first aspect, there is provided a handset detecting means for detecting whether or not the handset is being used. When detecting that the handset is being used and the line state determining means determines that the line is closed, the control means causes the volume control key to perform a function of controlling the volume of a call by the handset. It is characterized by the following. Thereby,
The handset detection means detects that the handset is being used, and the line state determination means,
When it is determined that the line is closed, the volume control key performs a function of increasing or decreasing the volume of a call by the handset. Therefore, the user can very easily adjust the volume of a call by the handset only by operating the volume adjustment key while the line is closed using the handset.

According to a third aspect of the present invention, in the terminal device according to the first aspect, in addition to the speaker for outputting a sound, a handset detecting means for detecting whether or not the handset is used. When the handset detecting means detects that the handset is not used, and the line state determining means determines that the line is in a closed state, the control means includes: In which the function of controlling the volume of the speaker is achieved. Thereby, the handset detecting means detects that the handset is not used, and when the line state determining means determines that the line is closed, the volume control key operates the speaker volume increasing / decreasing function. Fulfill. Therefore, the user can very easily adjust the volume of the speaker by closing the line without using the handset and operating the volume adjustment key.

According to a fourth aspect of the present invention, in the terminal device according to the first aspect, in addition to having a speaker for outputting a sound, it is determined whether or not a mode for outputting a sound via the speaker is set. A speaker output mode discriminating means for discriminating; and a mode for outputting a sound as a result of the discrimination by the speaker output mode discriminating means. Is characterized in that the volume control key performs a volume control function of a speaker. Thus, when the speaker output mode determining means determines that the audio output mode is set, and when the line state determining means determines that the line is not closed, the volume control key is used to set the volume of the speaker. Performs the increase / decrease function. Therefore, the user can very easily adjust the volume of the speaker only by operating the volume adjustment key in the state where the line is closed and the audio output mode is set.

According to a fifth aspect of the present invention, in the terminal device according to the first aspect, there is provided a document detecting means for detecting whether or not a document is set at a reading position. As a result of the detection, when the document is set at the reading position, the control means causes the volume control key to perform a function of changing the resolution.
Thus, when the document detecting means detects that the document is set at the reading position, the volume control key functions to change the resolution. Therefore, since the volume control key and the resolution change key, which are conventionally required, are shared, the number of keys is reduced, and the manufacturing cost is reduced. The reason for sharing the volume control key and the resolution change key in this way is that when the user sets the document at the reading position, the user intends to copy or facsimile transmit the document, and use the volume control key to set the volume. This is because it is considered that there is almost no intention to adjust.

According to a sixth aspect of the present invention, in the terminal device according to the first aspect, there is provided a document detecting means for detecting whether or not a document is set at a reading position. As a result of the detection, when the document is set at the reading position, the control means causes the volume control key to perform the function of changing the incoming call mode. Thus, when the document detecting means detects that the document is set at the reading position, the volume control key functions to change the incoming call mode. Therefore, since the volume control key and the incoming call mode change key, which are conventionally required, are shared, the number of keys is reduced and the manufacturing cost is reduced. The reason for sharing the volume control key and the incoming call mode change key in this way is that when the user sets the document at the reading position, the user intends to copy or facsimile transmit the document and use the volume control key. This is because there is almost no intention to adjust the volume.

According to the present invention, in a terminal device for outputting sound via a speaker in addition to a handset, a speaker for determining whether or not a mode for outputting sound via the speaker is set. Based on the determination result of the output mode determining means and the speaker output mode determining means, a predetermined key is operated as a volume control key in a mode of outputting sound, and other keys are output in a mode of not outputting sound. Control means for operating as a function key. In such a terminal device, when the speaker output mode determining means determines that the audio output mode is set, the control means operates a predetermined key as a volume control key. If it is determined that it is not, a predetermined key is operated as another function key. Therefore, if the user operates the volume adjustment key while the line is closed, the volume of the speaker output can be adjusted without any troublesome work. In addition, since the volume adjustment key plays a role of other function keys other than the volume adjustment, the volume adjustment key can be effectively used. As a result, the number of keys is reduced and the manufacturing cost is reduced.

According to an eighth aspect of the present invention, in the terminal device according to the seventh aspect, there is provided a document detecting means for detecting whether or not the document is set at the reading position. As a result of the detection, when the document is set at the reading position, the control means causes the volume control key to perform a function of changing the resolution.
Thus, when the document detecting means detects that the document is set at the reading position, the volume control key functions to change the resolution. Therefore, since the volume control key and the resolution change key, which are conventionally required, are shared, the number of keys is reduced, and the manufacturing cost is reduced. The reason for sharing the volume control key and the resolution change key in this way is that when the user sets the document at the reading position, the user intends to copy or facsimile transmit the document, and use the volume control key to set the volume. This is because it is considered that there is almost no intention to adjust.

According to a ninth aspect of the present invention, in the terminal device of the seventh aspect, there is provided a document detecting means for detecting whether or not a document is set at a reading position. As a result of the detection, when the document is set at the reading position, the control means causes the volume control key to perform the function of changing the incoming call mode. Therefore, since the volume control key and the incoming call mode change key, which are conventionally required, are shared, the number of keys is reduced and the manufacturing cost is reduced. The reason for sharing the volume control key and the incoming call mode change key in this way is that when the user sets the document at the reading position, the user intends to copy or facsimile transmit the document and use the volume control key. This is because there is almost no intention to adjust the volume. It should be noted that claims 1 and 7 at the time of filing are independent claims, but amendments can be made to make claim 1 dependent on claim 7 and conversely, amendments that make claim 7 dependent on claim 1 Is possible. Further, claims 2 to 6 are dependent on claim 1, but corrections depending on claims other than claim 1 can be made as necessary.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A terminal device according to the present invention will be described below in detail with reference to the drawings based on an embodiment embodied for a facsimile machine. First, a schematic configuration of a facsimile apparatus according to the present embodiment will be described with reference to FIG. FIG. 1 is an external perspective view of the facsimile machine.

In FIG. 1, a facsimile apparatus 1 has an apparatus main body 2, and a power cord 3 is provided on the right side of the apparatus main body 2.
And an antenna 4 for talking with a slave unit (not shown). An operation panel unit 5 is provided on the upper surface of the apparatus main body 2, and a liquid crystal display 6 as a display device is provided on the operation panel unit 5. A microphone M is provided below the operation panel unit 5 on the antenna 4 side as input means for inputting sound. A document stacker 7 that stacks read documents in a stacked state is provided at a rear position of the apparatus main body 2, and a paper support 8 is disposed at a rear position of the document stacker 7. Furthermore,
A receiver receiver 9 is provided on the left side of the apparatus main body 2, and a handset (hereinafter, referred to as “handset”) is provided on the receiver receiver 9.
A receiver 10 is also placed. In addition, a start key P for starting facsimile transmission is arranged on the lower right side of the operation panel unit 5, and various keys necessary for the facsimile apparatus 1 are appropriately arranged on the operation panel unit 5. Have been. Further, a speaker 27 for audio output is disposed below the right side wall of the apparatus main body 2.

Next, the function of a key group arranged on the operation panel unit 5 will be described with reference to FIG. FIG. 2 is a front view of the operation panel unit 5 provided in the apparatus main body 2. In FIG. 2, a dial key 11 for performing dial input is provided on the left side of the operation panel unit 5.
Is arranged. The dial key 11 includes an asterisk key 12 and a sharp key 13 in addition to numerical keys “1” to “0”. A speaker phone key 14 is disposed at the lower left side of the dial key 11. The speaker phone key 14 switches a call using the handset 10 to a call using the microphone M and the speaker 27 so that the speaker can talk without taking the handset 10. This key is used to set the phone mode.

An answering machine function unit 15 is provided on the right side of the liquid crystal display 6, and a recording key 15 for operating the answering machine function unit 15 is provided.
a, an erase key 15b, and a reproduction key 15c. The liquid crystal display 6 and the dial key 11
In between, five function keys 16 are arranged side by side, and two of them on the left side are volume control keys 16a for increasing the volume in proportion to the pressing time and in proportion to the pressing time. A volume control key 16b for reducing the volume. Then, the volume control key 16a functions as a resolution change key under a certain condition, and the volume control key 16b functions as a reception mode change key. In another embodiment, the resolution change key or the incoming call mode change key may be configured by operating both of these two keys 16a and 16b.

Next, a control system of the facsimile machine 1 will be described with reference to FIG. FIG. 3 is a block diagram showing a control system of the facsimile machine 1. In FIG.
The control system of the facsimile machine 1 has a control unit 17 configured with a CPU as a core. The control unit 17 includes the ROM 1
8 and the RAM 19 are connected. Here, ROM1
Reference numeral 8 stores the control program shown in FIG. 4 and various other programs necessary for executing the facsimile function.

The RAM 19 temporarily stores various data calculated via the CPU.
As shown in FIG. 3, the AM 19 is provided with a storage area 19A for storing audio information and the like and a storage area 19B for storing image information and the like. The facsimile information is stored in the storage area 19B when the information received from the other party is facsimile information, and the facsimile information for transmission is stored when the facsimile apparatus 1 is used for memory transmission. . When the information received from the other party is voice information, or when voice information is input from the microphone M, the answering machine function unit 15
The digital audio information is stored in the storage area 19A. Here, when the facsimile apparatus 1 functions as an answering machine, the answering machine function unit 15 operates, so that the voice information received from the other party or the voice input from the microphone M when the user operates the recording key 15a. Information is in the answering machine function unit 1
5, the digital audio information is stored in the storage area 19A. When the user operates the erase key 15b, the answering machine function unit 15
Deletes the digital audio information stored in the storage area 19A. When the user operates the playback key 15c, the answering machine function unit 15 converts the digital audio information stored in the storage area 19A into an analog audio signal and outputs the analog audio signal from the speaker 27,
Alternatively, the data is output to the communication partner via the telephone line 25 or the like. The control unit 17 can determine whether or not the sound is being reproduced by the speaker 27 by monitoring the state of the answering machine function unit 15.

The control unit 17 includes an operation panel unit 5 having a liquid crystal display (LCD) 6 and a CCD device for reading characters, figures, and the like of a read original sent from the original stacker 7 into the apparatus main body 2. A reading unit 20 (not shown) and a driving unit 20a for controlling the feeding of the original while driving the CCD device are connected. The control unit 17 further includes a recording paper cutter unit 21 for driving a cutter (not shown) via a cutter driving motor (not shown) to cut recording paper, and an image received via a telephone line 25. A recording unit 22 including a print head (not shown) for printing out information on recording paper, and a drive unit 23 for controlling recording paper feed while driving the print head are connected. Also,
A document sensor 28 as document detection means is connected to the control unit 17 to detect whether a document is set at the reading position.

Further, a telephone line 25 as a communication line is connected to the control unit 17 via an NCU 24, and the handset 10 is connected to the NCU 24. Furthermore,
The control section 17 is connected to a speaker 27 for outputting an audio signal, and the digital information stored in the storage area 19A or the like is converted into an analog audio signal by the answering machine function section 15. The speaker 27 supplied with the audio signal outputs the audio signal. Then, the control unit 17 outputs a control signal for volume control to the speaker 27 in order to control the volume of the sound when the speaker 27 outputs the sound signal. Specifically, the control unit 17 that detects the pressing time of the volume control keys 16a and 16b outputs a control signal for controlling the volume for outputting a volume proportional to the pressing time to the speaker 27.

In order to control the volume of the sound when the handset 10 outputs a sound signal, the control unit 17 controls the handset 1
A control signal for volume adjustment is output to 0. Specifically, the control unit 17 that detects the pressing time of the volume control keys 16a and 16b outputs a control signal for controlling the volume to output a volume proportional to the pressing time to the receiver 10. A power supply 29 is connected to the control unit 17.
The control unit 17 monitors the state of the NCU 24 to determine whether the line is in a line closed state in which a telephone call or communication with the other party can be performed via the telephone line 25 or in a line non-closed state in which telephone communication and communication are not possible. Can be determined. In this embodiment, the line closed state means that the handset 10 is picked up from the handset receiver 9 (hereinafter, also referred to as the use state of the handset 10) and the speakerphone key 14
Is pressed to enter a state in which communication is possible. Since the control unit 17 can determine whether or not the line is closed, it constitutes a line state determination unit.

The control section 17 is provided with the receiver mounting section 9.
Since it is possible to detect whether or not the receiver 10 is placed thereon, a handset detecting means for detecting whether or not the receiver 10 is being used is configured. Further, the control unit 17 can determine whether or not the speakerphone key 14 is depressed and the telephone is in a communicable state, and thus constitutes a speaker output mode determination unit.

In the facsimile apparatus 1 configured as described above, when performing a general facsimile transmission, an original to be read is set on the original stacker 7 and the facsimile number of the transmission destination is operated by operating the dial key 11. After the input, the start key P on the operation panel unit 5 is pressed. As a result, the read original is transported into the facsimile machine 1, and under the control of the control unit 17, the image data of the original is read via the reading unit 20, and the compressed and modulated image data is
The data is transmitted to the destination via the NCU 24 and the telephone line 25.

The image data is transmitted from the other party to the telephone line 2.
5. When the image data is transmitted to the facsimile apparatus 1 via the NCU 24, the control unit 17 receives the image data.
Is demodulated and restored, so that the image data is printed on the recording paper housed in the apparatus main body 2 while the print head of the recording unit 22 and the drive unit 23 are drive-controlled. After the printing is completed, the control unit 17 drives the recording paper cutter unit 21 to cut the printed recording paper, thereby completing the receiving operation.

Here, the relationship between the image information input by the reading unit 20 and the change of the reading resolution will be described. The reading resolution in the sub-scanning direction is determined as follows depending on the relationship between the amount of conveyance of the document to the reading position in the sub-scanning direction and the reading timing of the reading unit 20. That is, for example, when reading 300 pixels per inch, the distance obtained by dividing 1 inch by 300 (about 0.08 m
m), the reading is performed by the reading unit 20 every time the sheet is conveyed, whereas when reading 200 pieces per inch, the distance obtained by dividing 1 inch by 200 (about 0.12
mm), the reading is performed by the reading unit 20 every time the sheet is conveyed. If the document conveyance amount in the sub-scanning direction at the time of reading is small, the number of pixels to be read per inch increases, and the reading resolution increases. If the document transport amount is large, the number of pixels to be read per inch decreases, and the reading resolution decreases. Then, the volume control key 16a is operated under a certain condition.
In the case of “a”, when the user operates the resolution change key 16a to switch to “fine reading” or “normal reading”, for example, 300 × 300 per square inch
The reading resolution can be changed to (the number of pixels in the main scanning direction × the number of pixels in the sub-scanning direction) or the reading resolution to 300 × 200 (the number of pixels in the main scanning direction × the number of pixels in the sub-scanning direction) per square inch. Can read image data on a document at the reading resolution.

Next, a copy operation in which the recording unit 22 as a recording unit records image information input by the reading unit 20 will be described. When the read original is conveyed into the apparatus main body 2, the image data of the original is read via the reading unit 20 under the control of the control unit 17, and the image data is supplied to the recording unit 22. The print head and drive unit 23 of the unit 22 prints image data on recording paper stored in the apparatus main body 2. After the printing is completed, the control unit 17
The copying operation is completed by driving the recording paper cutter unit 21 to cut the printed recording paper. still,
Here, simply, one input image data is
Assume that it corresponds to one pixel recorded on the recording paper. The recording density of the copying operation in the sub-scanning direction is determined by the relationship between the transport amount of the recording sheet to the recording position in the sub-scanning direction and the recording timing of the recording unit 22. That is, when printing 300 pixels per inch, the distance obtained by dividing 1 inch by 300 (about 0.0
8 mm), the recording operation is performed by the recording unit 22. When printing 200 pixels per inch, the recording unit 22 conveys 1 inch divided by 200 (approximately 0.12 mm). Each time the recording is performed, a recording operation is performed by the recording unit 22. Therefore, if the transport amount of the recording paper in the sub-scanning direction during copying is small, the number of recording pixels per inch increases and the recording density increases, while the transport amount of the recording paper in the sub-scanning direction increases. For example, the number of recording pixels per inch decreases, and the recording density decreases.

When the volume control key 16a becomes the resolution change key 16a under a certain condition, when the user operates the resolution change key 16a for the copy operation, the "fine recording mode" or the "normal Recording mode "
Is switched to. In this case, under the control of the control unit 17,
In the case of the “fine recording mode”, the recording unit 22 can copy at a recording density of, for example, 300 × 300 (the number of pixels in the main scanning direction × the number of pixels in the sub-scanning direction) per square inch.
Further, in the case of the “normal printing mode”, for example, copying can be performed at a printing density of 300 × 200 (the number of pixels in the main scanning direction × the number of pixels in the sub-scanning direction) per square inch. When the volume control key 16b is changed to the incoming call mode change key 16b under a certain condition, the user sets the incoming call mode change key 1
6b, the control unit 17 causes the NCU 24
To sequentially switch to "automatic reception mode", "manual reception mode", "facsimile communication mode", "telephone call mode", "answering machine", and the like.

Next, the control operation for switching the functions of the volume control keys 16a and 16b of the facsimile apparatus 1 configured as described above will be described with reference to FIG. FIG. 4 is a flowchart showing the operation of the function change by the control unit 17. The control unit 17 receives a detection signal from the document sensor 28 and determines whether a document is present at a predetermined position (S
1). When the control unit 17 determines that there is a document (S1:
NO), the volume control keys 16a and 16b become the resolution change key 16a and the incoming call mode change key 16b (S
2). Then, when the resolution change key 16a is pressed,
The number of pixels in the main scanning direction × the number of pixels in the sub-scanning direction per square inch in the reading resolution or the recording density at the time of copying is, for example, (300 × 300) or (300 × 200).
It alternates between and. When the incoming call mode change key 16b is pressed, for example, “automatic reception mode”
The incoming call mode is sequentially switched as in the switching of “manual reception mode” or the like. Accordingly, when the original is set at the reading position, the control unit 17 controls the volume control keys 16a, 16a based on the detection result from the original sensor 28.
b performs the functions of changing the resolution and changing the incoming call mode.

As described above, the volume control keys 16a, 16b
And the resolution change key 16a and the incoming call mode change key 16
The reason for the common use of b and b is that when the user sets the original at a predetermined reading position, the user intends to copy the original or perform facsimile transmission and the like.
This is because it is considered that there is almost no intention to adjust the volume by using 6b. Here, when it is determined that there is no document at a predetermined position (S1: YES), the control unit 17 determines whether or not the line is closed (S3). Then, when the line is not in the closed state, that is, when a telephone call or the like cannot be performed via the telephone line 25 (S3: NO), the control unit 17 determines whether or not the audio reproduction mode is set (S4). That is, the control unit 17 determines that the receiver 10 is not used (the receiver receiver 9
Even if it is detected that the receiver 10 is placed on the upper side, or if it is detected that the speakerphone key 14 is not depressed (the telephone is not in a communicable state), the user can play the reproduction key 15c. Is operated by using the answering machine function, the control unit 17 determines whether or not the operation is in the sound reproduction mode by operating the reproduction key 15c. Here, the voice reproduction mode is a mode in which the answering machine function unit 15 operates to convert digital voice information stored in the storage area 19A into an analog voice signal and output the analog voice signal from the speaker 27. Say.

When the mode is not the audio reproduction mode (S4: N
O), the volume control keys 16a and 16b are
The keys are the resolution change key 16a and the incoming call mode change key 16b (S2). The reason for this setting is that the receiver 10
Is not used (the receiver 10 is placed on the receiver receiver 9) and the speakerphone key 14 is not pressed down (not in a callable state), and the user plays back. When the key 15c is not operated, the answering machine function unit 15 does not output an analog voice signal from the speaker 27. Therefore, rather than making the keys 16a and 16b function as volume control keys, they are used as resolution change and reception mode change keys. This is because the function is more convenient for the user.

When the user presses the reproduction key 15c, the control unit 17 determines that the mode is the audio reproduction mode (S).
4: YES), the volume control keys 16a and 16b serve as volume control keys for the speaker 27 (S5). Specifically, the volume control key 16a functions to increase the volume of the speaker 27 in proportion to the pressing time, and the volume control key 16b functions to decrease the volume of the speaker 27 in proportion to the pressing time. Fulfill. Therefore, when the user presses the reproduction key 15c and the control unit 17 determines that the audio output mode is set, and the control unit 17 determines that the line is not closed, the control unit 17 Causes the volume control keys 16a and 16b to perform the function of increasing or decreasing the volume of the speaker 27. Therefore, if the volume control keys 16a and 16b are appropriately operated, the user can store the message stored in the storage area 19A at an appropriate volume. You can listen to.

When the line is in a closed state, that is, when a call can be made via the telephone line 25 (S3: Y)
ES), the controller 17 determines whether or not the receiver 10 is being used (S6). Here, when the user receives the handset 10
When the speakerphone key 14 is depressed without using (S6: NO), the volume control keys 16a and 16b become volume control keys of the speaker 27 (S5). in this case,
The volume control key 16a functions to increase the volume of the speaker 27 in proportion to the pressing time, and the volume control key 16b functions to decrease the volume of the speaker 27 in proportion to the pressing time, as described above. Fulfill. Therefore, when the line is closed by pressing the speakerphone key 14 without using the receiver 10, the control unit 17 causes the volume control keys 16a and 16b to perform the function of increasing or decreasing the volume of the speaker 27. The user can listen to the message stored in the storage area 19A at an appropriate volume. On the other hand, if the user has not pressed the speakerphone key 14 (S6: YES), the volume control keys 16a, 16b
Is a volume control key of the receiver 10 (S7). Specifically, the volume control key 16a functions to increase the volume of the receiver 10 in proportion to the pressing time, and the volume control key 16b functions to decrease the volume of the receiver 10 in proportion to the pressing time. Fulfill. Therefore, when the line is closed and the receiver 10 is used, the controller 17
Causes the volume control keys 16a and 16b to perform the function of increasing or decreasing the volume of the call of the receiver (handset) 10. Therefore, if the volume control keys 16a and 16b are appropriately operated, the user can communicate with the other party at an appropriate volume. can do.

As described in detail above, in the case of this embodiment, the facsimile apparatus 1 includes the control unit 17 for determining whether or not the line is closed.
Can be operated as volume control keys when the keys 16a and 16b are in the line closed state, and can also be operated as function keys for changing the resolution and the incoming call mode when the lines are not closed. Therefore, if the user operates the volume control keys 16a and 16b while the line is closed,
The volume can be easily adjusted, and the volume adjustment key 16
a and 16b can be used effectively. As a result, the number of keys is reduced and the manufacturing cost is reduced. In addition to the receiver 10, the facsimile apparatus 1 that outputs sound via the speaker 27 includes a control unit 17 that determines whether or not the mode is a mode for outputting sound via the speaker 27. The control unit 17 operates the predetermined keys 16a and 16b as volume control keys when in the audio output mode, and operates as a resolution change and an incoming call mode change when not in the audio output mode. Thereby, if the user presses the speakerphone key 14 to put the speaker 27 in the output state and operates the volume adjustment keys 16a and 16b,
The volume can be easily adjusted.

It should be noted that the present invention is not limited to the above-described embodiment, and it is needless to say that various improvements and modifications can be made without departing from the gist of the present invention. For example, the terminal device of the present invention does not necessarily need to be a facsimile device, but may be another terminal device such as a telephone device and a computer. Also, predetermined keys 16a, 1
When not in the voice output mode, 6b may operate as other function keys other than the resolution change and the incoming call mode change.

[Brief description of the drawings]

FIG. 1 is an external perspective view of a facsimile apparatus according to an embodiment of the present invention.

FIG. 2 is a front view showing an operation panel unit of the facsimile apparatus according to the embodiment.

FIG. 3 is a block diagram illustrating a control system of the facsimile apparatus according to the embodiment;

FIG. 4 is a flowchart illustrating an operation of changing a function of a volume adjustment key according to the embodiment;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Facsimile apparatus 2 Main body 5 Operation panel unit 10 Handset 11 Dial key 14 Speaker phone key 16a, 16b Predetermined key 17 Control part 18 ROM 19 RAM 19A, 19B Storage area 24 NCU 25 Telephone line 27 Speaker 28 Original sensor M Microphone

Claims (9)

[Claims] 1. A terminal device capable of talking via a handset in a line-closed state, comprising: a line-state determining unit for determining whether the line is closed; and a terminal device based on a result of the determination by the line-state determining unit. Control means for operating a predetermined key as a volume control key when the line is closed, and operating as another function key when the line is not closed. 2. The terminal device according to claim 1, further comprising handset detection means for detecting whether or not the handset is being used, wherein the handset detection means detects that the handset is being used. And a terminal device, wherein when the line state determining means determines that the line is in a closed state, the control means causes a volume adjusting key to perform a function of adjusting a volume of a call by a handset. 3. The terminal device according to claim 1, further comprising: a speaker for outputting a sound; and a handset detecting unit for detecting whether or not the handset is being used. When detecting that the handset is not used, and when the line state determining unit determines that the line is closed, the control unit causes the volume control key to perform a volume control function of a speaker. A terminal device characterized by the above-mentioned. 4. The terminal device according to claim 1, further comprising: a speaker for outputting a sound, a speaker output mode determining unit for determining whether or not a mode for outputting a sound via the speaker is provided. In a mode in which a sound is output as a result of the discrimination by the speaker output mode discriminating means, and as a result of the discrimination by the line state discriminating means, the line is not closed, the control means controls the volume control key to output a sound volume of the speaker. A terminal device having an adjusting function. 5. The terminal device according to claim 1, further comprising: document detection means for detecting whether a document is set at a reading position, and as a result of the detection by the document detection means, setting the document at the reading position. If so, the control means causes the volume control key to perform a function of changing the resolution. 6. The terminal device according to claim 1, further comprising: document detection means for detecting whether a document is set at a reading position, and as a result of the detection by the document detection means, the document is set at the reading position. If so, the control means causes the volume control key to perform the function of changing the incoming call mode. 7. A terminal device for outputting sound via a speaker in addition to a handset, a speaker output mode determining means for determining whether or not a mode for outputting a sound via the speaker is provided, and the speaker output mode. Control means for operating a predetermined key as a volume control key in the case of a mode for outputting sound, and operating as another function key in a mode of not outputting sound based on the result of the judgment by the judgment means. A terminal device characterized in that: 8. The terminal device according to claim 7, further comprising: document detection means for detecting whether a document is set at a reading position, and as a result of the detection by the document detection means, setting the document at the reading position. If so, the control means causes the volume control key to perform a function of changing the resolution. 9. The terminal device according to claim 7, further comprising: document detection means for detecting whether a document is set at a reading position, and as a result of the detection by the document detection means, the document is set at the reading position. If so, the control means causes the volume control key to perform the function of changing the incoming call mode.