JP2001103128A - Electronic volume device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain an electronic volume device that can adjust a tone volume of a ringer with excellent operability in the case of adjusting the tone volume. SOLUTION: The electronic volume device for adjusting a ringer tone volume that is used for a telephone terminal information a user about the arrival of an incoming call by ringing of the ringer and adjusts a volume by keeping volume adjustment keys 10a, 11a depressed, consists of a control means 4A that controls volume adjustment synchronously with a ringing period of the ringer over its control period when the volume adjustment keys are operated, a sound source 14 that generates an adjustment change tone and a control means 4A that rings the adjustment change tone as its control in the case of the volume adjustment in the electronic volume device that adjusts the volume while volume adjustment keys 10b, 11b are operated.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electronic volume control device for electronically adjusting the volume and contrast of a liquid crystal display.

[0002]

2. Description of the Related Art Intelligent telephones such as multifunctional telephones have a function of freely adjusting the ringer ringing volume at the time of an incoming call by key operation. In such a telephone, the volume is gradually increased by operating the volume increase adjustment key while the ringer is sounding, and the volume is gradually decreased by operating the volume decrease adjustment key. Since the actual volume is reflected in the ringer sound during the ringing, the user can adjust the volume to a desired level while listening to the ringer sound.

FIG. 5 shows a configuration of a telephone having a conventional type of function. That is, in the figure, 1 is a telephone main body, 2 is a telephone line connecting the exchange and the telephone main body 1, 3 is a communication circuit, and is a connection between the 2-wire telephone line 2 and the 4-wire handset side. It performs line-to-line conversion to transfer audio signals, switch circuits to speakers and microphones for loud voice calls, adjust the output to the speakers so that the volume corresponds to the volume setting signal, It has a function of giving a ringer ringing signal to a speaker at the time of a call to notify an incoming call, and outputting dial information and the like provided from a control circuit described later to a telephone line.

Reference numeral 4 denotes a control circuit which plays a central role in controlling each component of the telephone body 1, and is constituted by a CPU. A power supply circuit 5 extracts a DC voltage supplied from the telephone line 2 and generates various voltages necessary for the operation of each component of the telephone body 1. Reference numeral 6a denotes an electronic volume, which switches to a resistance value corresponding to the value of the setting signal.

The control circuit 4 increases the volume setting signal by one step every predetermined time corresponding to the operation time of the adjustment key for increasing the sound, and responds to the operation time of the adjustment key for reducing the sound. It has a function of reducing the volume setting signal by one step every predetermined time and giving the volume setting signal to the electronic volume 6a. The electronic volume 6a has a function of setting the ringer volume corresponding to the value of the setting signal from the control circuit 4. The level of the ringer (ring tone) signal of the communication circuit 3 is adjusted so that That is, the electronic volume 6a changes the resistance value level so that the resistance value corresponds to the value of the setting signal from the control circuit 4, and changes the level of the ringer signal to be controlled.

Reference numeral 7 denotes a recording medium for holding an execution program of the control circuit 4, various data, and the like. 8 is a handset (handset), 9 is a speaker, 10 is an adjustment key ("UP" adjustment key) for increasing the ringer volume, and 11 is an adjustment key ("DOWN" adjustment key) for decreasing the ringer volume. ), 12 are dial keys, 13
Is a display for displaying characters.

The adjustment of the ringer volume during ringing of the ringer (during ringing) in the conventional apparatus having such a configuration will be described with reference to the flowchart of FIG.

When an incoming call is detected, a ringing signal is sent to the speaker 9 connected to the communication circuit 3 under the control of the control circuit 4 which detects the incoming call, and the ringer rings. In this state, the operator operates the ringer. When adjusting the volume, press the adjustment key corresponding to the direction of adjustment, that is, press the “UP” adjustment key 10 to increase the volume, or press the “DOWN” adjustment key 11 to decrease the volume while the ringer is sounding. .

By this key operation, the control circuit 4 sets "U
It is detected that the "P" adjustment key 10 or the "DOWN" adjustment key 11 has been pressed (ST61). Then, the control circuit 4
Starts a built-in timer, sets a certain period of time to control the volume adjustment at predetermined intervals (ST62), and starts monitoring within the set period. Then, the control circuit 4 monitors that there is no change in the key being pressed (ST63).

Then, the time elapse is known based on the information of the timer, and if the corresponding adjustment key is being depressed at the time when a predetermined time has elapsed, the electronic volume 6a changes the volume by one level corresponding to the type of the adjustment key. Then, the level of the ringer volume is changed by one step in the direction corresponding to the type of the adjustment key (ST64, ST66). At the same time, a fixed time is set in the timer again (ST62),
Repeat 63 to ST64. The electronic volume 6a that has received the volume setting signal whose volume has been changed by one level adjusts the volume to the corresponding resistance value and adjusts the level of the ringing tone.

Thus, if the same adjustment key is kept pressed,
The ringer volume is adjusted in a desired direction at regular intervals.

However, if the ringer volume level reaches the maximum or minimum level on the way (ST65) or if the key being pressed changes, the adjustment is terminated at this point.

As described above, in the conventional method, since the adjustment is always performed at a fixed time interval from the point of time when the adjustment key is pressed, depending on the timing of pressing the adjustment key, the changing point of the ringer volume may fall into a silent section of the ringer ringing cycle. In such a case, it is not known whether the sound volume is at a desired level, and therefore, the sound volume is excessively adjusted.

Some telephones have a function of adjusting the contrast of a liquid crystal display (LCD) 13. In this case, FIG.
As shown in FIG. 1, an electronic volume 6b for adjusting the contrast of the liquid crystal display 13 is provided.
Reference numeral 1 is used as an adjustment key for contrast adjustment. The control circuit 4 increases the density setting signal corresponding to the operation time of the adjustment key 10 for increasing the density, and decreases the density setting signal corresponding to the operation time of the adjustment key 11 for decreasing the density. The electronic volume 6b for contrast adjustment adjusts the liquid crystal display 13 so as to have a density corresponding to the density setting signal from the control circuit 4, and corresponds to the value of the setting signal from the control circuit 4. In this case, the contrast of the liquid crystal display 13 to be controlled is adjusted by changing the resistance value level so as to obtain the adjusted resistance value.
The adjustment is performed as follows.

FIG. 8 shows a conventional liquid crystal display 13 for adjusting the contrast by adjusting the "UP" adjustment key 10 and the "DO" key.
7 is a simple operation flow when the operation is performed using the “WN” adjustment key 11. The conventional operation method and operation will be described with reference to this.

In this conventional device, the contrast of the liquid crystal display 13 can be adjusted at any time, and can be adjusted up to ± 10 steps. Also, since the contrast of the liquid crystal display 13 is adjusted by the pressing time of the adjustment key, the adjustment timing when the adjustment key is pressed is 0.5.
Seconds.

A timer data setting area for setting the adjustment timing is secured in an area in the recording medium 7, and the control circuit 4 counts down the set value to obtain a timer function. Therefore, although the timer function is actually realized as a built-in timer of the control circuit 4, it is needless to say that other methods can also be realized. The time of the adjustment timing is not limited to the above value.

First, the case where the contrast of the liquid crystal display 13 is increased will be described.

The operator presses the "UP" adjustment key 10. Then, the control circuit 4 detects the depression of the "UP" adjustment key 10 (ST71) and sets the timer in the recording medium 7 to a value equivalent to 0.5 seconds (ST72). The control circuit 4 uses the “UP” key 1
It monitors that 0 is always depressed.

If the "UP" key 10 is being pressed (ST73) and the timer has elapsed 0.5 seconds (ST74), the control circuit 4 resets the timer to a value equivalent to 0.5 seconds (ST75), and performs the adjustment process. Do. The control circuit 4 determines whether the contrast density of the liquid crystal display 13 has been adjusted to the maximum level (ST76). Since the first operation has not been adjusted to the maximum level, the control circuit 4 controls the electronic volume 6 for the liquid crystal display 13.
b is raised by one level (increased) and adjusted (ST77). "U
By continuing to press the "P" adjustment key 10, the contrast becomes deeper by one level every 0.5 seconds, and the adjustment continues until it reaches the maximum level (initial value +10 level). If the "UP" adjustment key 10 is pushed up on the way, the adjustment ends at this point.

Next, the case where the contrast of the liquid crystal display (LCD) 13 is made light (thin) will be described. The operator adjusts the contrast of the liquid crystal display 13 by pressing the “DOWN” adjustment key 11. The operation flow in this case is shown in (ST78) to (ST84) in FIG. 8, and performs the same processing as the processing while the “UP” adjustment key 10 is pressed, except for lowering (lightening) the adjustment level.

As described above, in the conventional telephone, the contrast of the liquid crystal display (LCD) 13 can be easily adjusted by operating the "UP" adjustment key 10 and the "DOWN" adjustment key 11. However, when the “UP” adjustment key 10 is pressed, the adjustment level becomes the maximum level,
When the adjustment level becomes the minimum level while the “DOWN” adjustment key 11 is being pressed, the operator may continue the adjustment operation without knowing that the adjustment level does not change.
In addition, the timing when the adjustment level changes may not be known.

[0023]

A telephone having an electronic volume as described above and having an adjustment function capable of adjusting the volume of the ringer sound by operating the adjustment key while listening to the ringer sound. However, such a ringer ringing sound volume adjustment function of a telephone conventionally has a ringer volume of one step at a constant time interval from the time the adjustment key is pressed, regardless of the ringer ringing period and the ringer phase during ringing. Therefore, the change point of the ringer volume and the silent period of the ringer sounding cycle may overlap depending on the timing of pressing the adjustment key.

For this reason, the change point of the ringer volume is difficult to understand, and even if the volume changes in a silent section, a human cannot recognize until he or she waits for the next voiced section. As a result, there is a problem that operability is poor.

Also, the contrast adjustment of the liquid crystal display (LCD) is provided with an electronic volume so that the contrast can be adjusted at regular time intervals by continuously pressing a key for adjusting the contrast of the liquid crystal display (LCD). For phones with functions, by continuing to press the key for contrast adjustment, the contrast is adjusted by a fixed amount at regular intervals, and when the adjustment level reaches the maximum level or the minimum level, Although the adjustment is stopped, it is a stepwise adjustment of a fixed amount every fixed time, so even if the adjustment level changes, it will not be possible to visually judge the adjustment, Even if the level does not change, the operability of continuing the adjustment operation is bad.

Therefore, an object of the present invention is to firstly provide a telephone terminal capable of easily adjusting the ringer volume by always adjusting the ringer volume at a certain timing in the sound section. To provide an electronic volume device. A second object of the present invention is to provide an electronic volume device capable of easily grasping the progress of the density adjustment of the liquid crystal display and improving the operability of the contrast adjustment.

[0027]

In order to achieve the above object, the present invention is configured as follows. That is, firstly, in the electronic volume control device for adjusting the volume of the ringer sound which is used in a telephone terminal device for notifying an incoming call by ringer ringing and adjusting the volume while a volume adjustment key is operated, When a key is operated, a control means is provided for controlling the volume adjustment operation in synchronization with the ringing cycle of the ringer over the operation period.

Secondly, in an electronic volume control device for adjusting the volume while the volume adjustment key is operated, a sound source for generating an adjustment change sound and a control for controlling the sound to generate the adjustment change sound at the time of the volume adjustment. And means.

In such a configuration, in the case of the first configuration, when the volume adjustment key is operated, the control means controls the volume adjustment key to perform the volume adjustment operation in synchronization with the ringing cycle of the ringer over the operation period. I do. Specifically, this control sets the time required from the time when the adjustment key is pressed to the time when the first sounding section of the next ringer ringing cycle arrives to the timer as an initial value. The control is repeated to repeat the operation of setting the time required until the sounding section of the next ringer ringing cycle arrives in the timer, and performing the control to change the constant level when the set time has elapsed.

In the present invention, the value set in the adjustment timer is the time until the first sounding section of the next ringer sounding cycle and the second and subsequent times is the ringer sounding time for one cycle. Since the timing when the timer reaches zero is always the first sounding interval in the ringer ringing cycle, the changing point of the ringer volume is always a fixed timing regardless of the timing of pressing the adjustment key or the phase of the ringer. That is,
It can be fixed to the sounding section of the ringer ringing cycle. Therefore, according to the present invention, the linger volume can always be adjusted at a certain timing in the sound section, and the linger volume adjustment operation can be facilitated.

In the case of the second configuration, there is a sound source that generates an adjustment change sound, and by operating a volume adjustment key, the control means adjusts the volume over the operation period of the volume adjustment key, and at the same time, adjusts the volume. Control is performed to sound the adjustment change sound. Therefore, when this configuration is used for the contrast adjustment of the liquid crystal display, when the density adjustment level changes, the adjustment change sound can be sounded simultaneously with the adjustment of the contrast of the liquid crystal display. The change can be judged not only by eyes but also by ears.

Therefore, according to the present invention, the operability of the contrast adjustment can be improved by easily grasping the progress of the density adjustment of the liquid crystal display.

[0033]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing the configuration of a telephone according to the present invention. In the figure, 1A is a telephone body, 2 is a telephone line connecting the exchange and the telephone body 1,
Reference numeral 3 denotes a communication circuit, which connects the telephone line 2 having a two-wire configuration to the handset having a four-wire configuration to perform two-wire to four-wire conversion to exchange a voice signal, and a speaker or microphone for a voice call. Switch the circuit, adjust the output to the speaker so as to have a volume corresponding to the volume setting signal, give a ringer ringing signal to the speaker at the time of an incoming call, notify the incoming call, dial given from the control circuit described later It has a function of outputting information and the like to a telephone line.

Reference numeral 4A denotes a control circuit which plays a central role in controlling each component of the telephone main body 1A, and is constituted by a CPU. A power supply circuit 5 extracts a DC voltage supplied from the telephone line 2 and generates various voltages necessary for the operation of each component of the telephone body 1.

An electronic volume 6a is similar to the electronic volume 6a in FIG. The control circuit 4A increases the volume setting signal by one step every predetermined time corresponding to the operation time of the adjustment key for increasing the sound, and increases the volume setting signal by a predetermined time corresponding to the operation time of the adjustment key for reducing the sound. Has a function of reducing the volume setting signal by one step and giving the volume setting to the electronic volume 6a. The electronic volume 6a is controlled by the communication circuit 3 so that the ringer volume corresponds to the value of the setting signal.
This adjusts the level of the ringer signal.

Reference numeral 6b denotes an electronic volume for adjusting the contrast of the liquid crystal display 13, which is similar to the electronic volume 6b in FIG. The control circuit 4A increases the density setting signal by one step every predetermined time corresponding to the operation time of the adjustment key for increasing the density, and corresponds to the operation time of the adjustment key 11b for decreasing the density. It functions so as to reduce the density setting signal by one step every predetermined time, and the electronic volume 6b for contrast adjustment adjusts the liquid crystal display 13 so as to have a density corresponding to the density setting signal from the control circuit 4A. Things.

Reference numeral 7 denotes a recording medium for holding an execution program of the control circuit 4A, various data, and the like. 8 is a handset (handset), 9 is a speaker, 10
a is an adjustment key ("UP") for increasing the ringer volume
Key, 11a is an adjustment key (“DOWN” key) for decreasing the ringer volume, 10a is an adjustment key for increasing the display density of the liquid crystal display 13, and 11b is a display key for decreasing the display density of the liquid crystal display 13. Key 12 is a dial key, and 13 is a display for displaying characters.

Reference numeral 14 denotes a sound source circuit which generates a predetermined adjustment sound or a warning sound for notifying the execution of the adjustment during the contrast adjustment. When the control circuit 4A executes the contrast adjustment, the output of the sound source circuit 14 is given to the communication circuit 3 at each time when the change of one level (one step) of the density (one step of density adjustment) is performed. The communication circuit 3 is controlled under the control of the control circuit 4A to provide the output of the sound source circuit 14 to the speaker 9 for a predetermined short time. Has functions.

The adjustment keys 10a, 11a, 10b, 1
1b is provided separately for adjusting the ringer volume and for adjusting the contrast. However, if the mode can be switched with a function key or the like, it can be used for both the ringer volume adjustment and the contrast adjustment. .

Next, the operation method and operation of the present invention will be described with reference to FIGS.

In the embodiment, similarly to the conventional example, the adjustment of the ringer volume when the ringer is ringing (receiving a call) will be described first.

When there is an incoming call, the control circuit 4A detects this.
9 connected to the communication circuit 3 under the control of
In this state, when the operator adjusts the ringer volume, an adjustment key corresponding to the adjustment direction, that is, an "UP" adjustment key 10a if the operator wants to increase the ringer volume. If it is desired to reduce the size, the "DOWN" adjustment key 11a is pressed while the ringer is sounding.

By this key operation, the control circuit 4A detects that the adjustment key 10a or 11a has been pressed (S
2a). Then, the control circuit 4A sets the time from the current time to the first sounding section of the next ringer sounding cycle in the timer data area in the recording medium 7 (S2b). Then, the data is updated by counting down the set value (the built-in timer function of the control circuit 4A).

Next, the control circuit 4A monitors whether there is no change in the key being pressed (S2c).

Then, when the first sounding section of the ringer ringing cycle is reached, that is, the value of the timer function becomes zero.
At the time of (S2d), if the corresponding adjustment key 10a or 11a is being pressed, the ringer volume level is changed by one step in the direction corresponding to the type of the adjustment key (S2f), and at the same time, the ringer sounds for one cycle. Set the time to the timer function (S2g),
(S2c) to (S2g) are repeated.

Thereafter, in the first sounding section of the ringer ringing cycle, the ringer volume changes in the direction corresponding to the type of the adjustment key being pressed.

However, if the ringer volume level reaches the maximum or minimum level in the middle (S2e) or if the key being pressed changes (S2c), the adjustment ends at this point.

As described above, in order to synchronize the ringing cycle of the ringer and the timing of the adjustment, at the start of the operation of the adjustment key, the time required from the start of the operation to the next time the ringer starts to ring is set in the timer. Thereafter, the timer value is set in the ringer ringing cycle, and the timer set value is divided into the adjustment start time (first time) and the second and subsequent times, so that the operation timing of the adjustment key is adjusted by the ringer. Even if it is out of phase, regardless of this,
The volume can always be changed at a certain timing, that is, in the sounding section of the ringer ringing cycle. Therefore, the actual volume and the adjustment amount correspond to each other, and the volume adjustment operation is extremely easy, and the operability is dramatically improved.

Next, the contrast adjustment of the liquid crystal display (LCD) 13 will be described. FIG. 2 is a simple operation flow when the contrast adjustment of the liquid crystal display 13 of the present invention is performed by the "UP" adjustment key 10b and the "DOWN" adjustment key 11b which are the adjustment keys.

In this embodiment, the contrast of the liquid crystal display 13 can be adjusted at all times, as in the conventional example.
It is assumed that zero-step adjustment can be performed. Further, since the contrast of the liquid crystal display 13 is adjusted by the pressing time of the adjustment key, the adjustment timing when the adjustment key is pressed is set to 0.5 seconds as in the conventional example. The time of the adjustment timing and the adjustment stage are not limited to these values.

First, the case where the contrast of the liquid crystal display 13 is increased will be described. In this case, the operator presses the “UP” adjustment key 10b. Then, the control circuit 4A detects the depression of the “UP” adjustment key 10b (S3a),
The built-in timer of the control circuit 4A is set to a value equivalent to 0.5 seconds (S3b).

Then, the control circuit 4A monitors that the "UP" adjustment key 10b is kept depressed. And
The "UP" adjustment key 10b is being pressed (S3c), and
When the timer has elapsed for 0.5 seconds (S3d), the control circuit 4A resets the timer to a value equivalent to 0.5 seconds (S3e) and performs adjustment processing. In the adjustment process, the current density setting value is changed to a higher value by one step, and it is determined whether or not this value corresponds to the maximum level of the contrast of the liquid crystal display 13, and if not, the changed value is changed. The density setting value is given to the electronic volume 6b.

The electronic volume 6b adjusts the liquid crystal display 13 to a contrast corresponding to the given density setting value. After determining whether the contrast of the liquid crystal display 13 has been adjusted to the maximum level in this way (S3
f) Perform density adjustment processing. Since the first operation has not been adjusted to the maximum level, the control circuit 4 raises (darkens) the electronic volume 6b for the liquid crystal display 13 by one level (S3g).

At this time, an adjustment change sound is emitted to notify the operator of the change in the adjustment level. The control circuit 4A passes through the path between the input terminal from the sound source circuit 14 in the communication circuit 3 and the output terminal to the speaker 9 in order to output the sound of the sound source circuit 14 to the speaker as it is. Ring from 9 Sound source circuit 14 here
It is assumed that the sound source inside is always given to the communication circuit 3.

In this way, the "UP" adjustment key 10b
By continuing to press, the operation of increasing the contrast by one level every 0.5 seconds and at the same time sounding the adjustment change sound from the speaker 9 is performed until the contrast reaches the maximum contrast level (initial value +10 level). The adjustment will continue. When the contrast maximum level is reached, there is no more contrast level even if the "UP" adjustment key 10b is continuously pressed in this state.
The contrast does not change anymore, and the adjustment change sound is of course not sounded. "UP" adjustment key 10 during adjustment
If the user has stopped pressing b, the adjustment ends at this point.

Next, a case where the contrast of the liquid crystal display 13 is made light (thin) will be described. In this case, the operator presses the "DOWN" adjustment key 11b. As a result, the control circuit 4A detects that the "DOWN" adjustment key 11b has been pressed (S3i), and sets the built-in timer of the control circuit 4A to a value equivalent to 0.5 seconds (S3j). Then, the control circuit 4A monitors that the "DOWN" adjustment key 11b is kept pressed.

When the "DOWN" adjustment key 11b is being pressed (S3k) and the timer has elapsed for 0.5 seconds.
(S3l), the control circuit 4A resets the timer to a value equivalent to 0.5 seconds (S3m), and performs adjustment processing. In the adjustment processing, the current density setting value is changed to a lower value by one step, and it is determined whether or not this value corresponds to the minimum level of the contrast of the liquid crystal display 13, and if not, the change is made. The density setting value is given to the electronic volume 6b.

The electronic volume 6b adjusts the liquid crystal display 13 to a contrast corresponding to the given density setting value. After determining whether the contrast of the liquid crystal display 13 has been adjusted to the minimum level in this way (S3
n) Perform density adjustment processing. At this time, the control circuit 4A sounds an adjustment change sound to notify the operator of the change in the adjustment level (S3p).

The control circuit 4A passes through the path between the input terminal from the sound source circuit 14 in the communication circuit 3 and the output terminal to the speaker 9 in order to output the sound of the sound source circuit 14 to the speaker as it is. This causes the speaker 9 to sound.

When the contrast reaches the minimum level,
In this state, even if the "DOWN" adjustment key 11b is continuously depressed, there is no more contrast level.
The contrast does not change anymore, and the adjustment change sound is of course not sounded. If the pressing of the "DOWN" adjustment key 11b is stopped during the adjustment, the adjustment is terminated at this point.

As a result, by continuing to press down the “DOWN” adjustment key 11b, the contrast of the liquid crystal display 13 is adjusted so as to decrease by one step at predetermined time intervals, and at the same time the adjustment change sound is emitted from the speaker 9. be able to.

As described above, when the density changes during the contrast adjustment of the liquid crystal display, the adjustment change sound is emitted, and when the density does not change, the adjustment change sound is not emitted.
The adjustment timing and the change can be known by eyes and ears, and when the adjustment value does not change any more.

As described above, when the adjustment level is changed, the adjustment change sound is caused to sound, so that there is an advantage that the change in the adjustment value can be judged by the ear as well as the eyes.

Next, another embodiment of the contrast adjustment will be described. In this embodiment, the contrast adjustment of the liquid crystal display 13 is always adjustable, as in the previous embodiment, and the number of adjustment stages is ± 10 steps. Further, since the contrast of the liquid crystal display 13 is adjusted by the pressing time of the adjustment key, the adjustment timing when the adjustment key is pressed is the same as in the conventional example.
0.5 seconds. Of course, the time of the adjustment timing and the adjustment stage are not limited to these values.

First, the case where the contrast of the liquid crystal display 13 is increased will be described. The operator is "UP"
Press the adjustment key 10b. The control circuit 4A detects the depression of the "UP" adjustment key 10b (S4a), and sets the timer built in the control circuit 4A to a value equivalent to 0.5 seconds (S4b). The control circuit 4A monitors that the "UP" adjustment key 10b is being pressed at all times, and if the "UP" adjustment key 10b is being pressed (S4c) and the timer has elapsed 0.5 seconds (S4d),
The control circuit 4A resets the timer to a value equivalent to 0.5 seconds (S
4e) Before the adjustment process is started, before that, the control circuit 4A determines whether the contrast of the liquid crystal display 13 has been adjusted to the maximum level (S4f).

If the adjustment has not been made to the maximum level, the control circuit 4A raises the current density setting value by one level, and the liquid crystal display 1
The density is given to the electronic volume 6b for 3 so as to increase the density by one level (dense).

By continuing to press the "UP" adjustment key 10b, the contrast increases by one level every 0.5 seconds, and the adjustment continues until it reaches the maximum level (initial value +10 level). During the adjustment, the "UP" adjustment key 10b
When the button is stopped, the adjustment ends.

When the adjustment level has been adjusted to the maximum level while the "UP" adjustment key 10b is being pressed, a warning sound is sounded to inform the operator that the adjustment level will not change (S4h). The control circuit 4A passes the path between the input terminal from the sound source circuit 14 in the communication circuit 3 and the output terminal to the speaker 9 in order to output the sound source in the sound source circuit 14 to the speaker as it is. Do. Here, it is assumed that the sound source in the sound source circuit 14 is always output to the communication circuit 3.

The warning sound for notifying that the adjustment level does not change is stopped when the operator stops pressing the "UP" adjustment key 10b (S4i) (S4j). Then, the adjustment ends at the same time.

Next, a case where the contrast of the liquid crystal display 13 is reduced will be described. The operator adjusts the contrast of the liquid crystal display 13 by pressing the “DOWN” adjustment key 11b. The control circuit 4A is "DOWN"
The depression of the adjustment key 11b is detected (S4k), and the timer built in the control circuit 4A is set to a value equivalent to 0.5 seconds (S4l). The control circuit 4A monitors whether or not the adjustment key 11b is being pressed, and if the adjustment key 11b is being pressed (S4m) and the timer is
When 0.5 seconds have elapsed (S4n), the control circuit 4A resets the timer to 0.
The value is reset to a value equivalent to 5 seconds (S4q), and before the adjustment process is started, the control circuit 4A determines whether the contrast of the liquid crystal display 13 has been adjusted to the minimum level (S4p).

If the density has not been adjusted to the minimum level, the control circuit 4A lowers the current density setting value by one level, and the liquid crystal display 1
The density is given to the electronic volume 6b for 3 so that the density is lowered by one level (thin) (S4q). If the pressing of the adjustment key 11b is stopped during the adjustment, the adjustment ends.

By continuing to press the adjustment key 11b in this way, the contrast is reduced by one level every 0.5 seconds, and the adjustment is continued until it reaches the minimum level (the level of the initial value -10). When the "DOWN" adjustment key 11b is pressed, the adjustment level is the minimum level (initial value -10 level).
When the adjustment has been completed, a beep will sound to inform the operator that the adjustment level will not change any more
(S4r). When the depression of the adjustment key 11b is stopped, the warning sound is stopped (S4s, S4t).

When the adjustment key is operated as described above, the contrast of the liquid crystal display is changed by one level at regular intervals, and when the contrast does not change during the contrast adjustment, a warning sound is sounded to inform the user. At the same time, the warning sound is stopped when the adjustment operation is completed, so that the operator can be notified from the ear of the operator that the adjustment level has not changed.

The present invention is not limited to the embodiment described above and shown in the drawings, but can be appropriately modified and implemented without departing from the scope of the invention. In the embodiment, the example of the liquid crystal display device has been described, but the present invention can be applied to adjustment of a speaker volume, a ringer volume handset reception volume, and the like. In addition, not only telephones, facsimile machines,
Using a liquid crystal display or speaker like an electronic organizer,
It can be applied to electronic devices that adjust with an electronic volume. In addition, by combining the two methods described as examples of the contrast adjustment of the liquid crystal display, it is possible to notify both the progress and the limit of the adjustment by sound, so that the operability is further improved. To contribute.

As described in detail above, the present invention firstly provides
An electronic volume device for ringer sound volume adjustment, which is used in a telephone terminal device for notifying an incoming call by a ringer sound and adjusts the volume by a certain level at a certain time interval while a volume adjustment key is operated, When the adjustment key is operated, over the operation period,
The apparatus further comprises control means for controlling the volume adjustment operation at a constant level in synchronization with the ringing cycle of the ringer, and secondly, while the volume adjustment key is operated, An electronic volume control device that adjusts the volume by a constant level every time, comprising: a sound source that generates an adjustment change sound; and control means that controls to sound the adjustment change sound every time the volume adjustment for the certain level is performed. And configured
Third, in an electronic volume control device that adjusts the volume by a constant level at regular intervals while the volume adjustment key is operated, a sound source that generates a warning sound and the volume adjustment reaches the limit and cannot be adjusted. When
And control means for controlling to sound the warning sound.

In the case of the first configuration, when the volume adjustment key is operated, the control means operates over the operation period.
The control is performed in such a manner that the volume adjustment operation of the constant level is performed in synchronization with the ringing cycle of the ringer. This allows the timing of volume adjustment to always be within the sounding interval within the ringer ringing cycle, so that the changing point of the ringer volume is always set at a certain timing regardless of the operation timing of the adjustment key or the phase of the ringer. In other words, the sound volume can be fixed to the sounding section of the ringer sounding cycle, and the sound volume can be adjusted while always listening to the adjusted sound volume.

In the case of the second configuration, there is a sound source that generates an adjustment change sound, and by operating the volume adjustment key, the control means causes the control unit to operate at a constant level every predetermined time during the operation period of the volume adjustment key. At the same time as adjusting the volume at a time, the control is performed so as to sound the adjustment change sound every time the volume adjustment at the constant level is performed.Therefore, if this configuration is used for contrast adjustment of the liquid crystal display, When the density adjustment level changes, at the same time as adjusting the contrast of the liquid crystal display,
The adjustment change sound can be sounded, whereby the change in the adjustment level can be judged not only by eyes but also by ears.

Therefore, according to this configuration, the progress of the density adjustment of the liquid crystal display can be easily grasped, and the operability of the contrast adjustment can be improved.

Further, in the third configuration, when the volume adjustment reaches the limit and cannot be adjusted, the control means controls to sound the warning sound. In this way, when the adjustment level does not change while the operator performs the adjustment operation, the sound from the sound source is output as a warning sound, so that the operator is notified that the adjustment level has not changed. Can be notified, useless operation can be prevented, and operability is improved.

[0080]

As described in detail above, according to the present invention,
It is possible to provide an electronic volume device for a telephone terminal that can easily adjust the ringer volume by always adjusting the ringer volume at a certain timing in the sound section. It is possible to provide an electronic volume device in which the progress of the density adjustment can be easily grasped and the operability of the contrast adjustment can be improved.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a configuration example when the present invention is applied to a telephone.

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

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

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

FIG. 5 is a block diagram showing a conventional example.

FIG. 6 is a flowchart showing an operation example of the conventional example of FIG.

FIG. 7 is a block diagram showing another conventional example.

8 is a flowchart showing an operation example of the conventional example of FIG.

[Explanation of symbols]

1A: Telephone body, 2: Telephone line, 3: Telephone circuit, 4A
... Control circuit, 5 ... Power supply circuit, 6a, 6b ... Electronic volume, 7 ... Recording medium, 8 ... Handset, 9 ... Speaker,
10a, 10b "UP" adjustment key (adjustment key), 11
a, 11b: "DOWN" adjustment key (adjustment key), 12
... dial keys, 13 ... display, 14 ... sound source circuit.

Claims (2)

[Claims] 1. An electronic volume device for adjusting a ringer sound volume for adjusting a volume while a volume adjustment key is operated, wherein the volume adjustment key is used in a telephone terminal device for notifying an incoming call by a ringer sound. An electronic volume device comprising: control means for controlling the volume adjustment operation to be performed in synchronization with the ringing cycle of the ringer during the operation period when operated. 2. An electronic volume control device for adjusting a volume while a volume adjustment key is operated, comprising: a sound source for generating an adjustment change sound; and control means for controlling to sound the adjustment change sound when the volume is adjusted. Electronic volume device characterized by performing.