JPH057234A - Electronic volume device - Google Patents

Abstract

PURPOSE:To obtain an electronic volume device to facilitate the operation by grasping the present adjusting condition at the time of adjustment. CONSTITUTION:In an electronic volume device for adjusting a ringer ringing volume used for a telephone terminal device to inform of the reception by ringer ringing and to adjust the volume for each constant level for a constant time by continuing to push down volume adjusting keys 10a and 11a, the device is constituted of a control means 4A to synchronize the ringing period of a ringer and control to perform the volume adjusting operation for each constant level, for the operation period when a volume adjusting key is operated. In the electronic volume device to adjust the volume for each constant level for a constant time while volume adjusting keys 10b and 11b are operated, the device is constituted of a sound source 14 to generate an adjusting changing sound and the control means 4A to control to ring the adjusting changing sound each time the volume for a constant level is adjusted.

Description

Detailed Description of the Invention

[0001]

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

[0002]

2. Description of the Related Art Intelligent telephones such as multi-function 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, if the adjustment key for increasing the volume is operated while the ringer is ringing, the volume is gradually increased, and if the adjustment key for decreasing the volume is operated, the volume is gradually reduced. Since the actual volume is reflected in the ringing sound that is sounding, it is possible to set the volume to a desired level while listening to the ringing sound.

FIG. 5 shows the configuration of a conventional telephone having various kinds of functions. That is, in the figure, 1 is a telephone body, 2 is a telephone line that connects the exchange and the telephone body 1, and 3 is a call circuit, which is for connection between the telephone line 2 of 2-wire configuration and the handset side of 4-wire configuration. Line-to-line conversion is performed to transfer voice signals, circuits are switched to speakers or microphones for loud calls, output to the speaker is adjusted so that the volume corresponds to the volume setting signal, At the time of a call, it has a function of giving a ringer ringing signal to a speaker to notify an incoming call, and outputting dial information etc. given 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 is switched 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. The electronic volume 6a 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 ringer volume corresponding to the value of the setting signal from the control circuit 4. The ringer signal level of the communication circuit 3 is adjusted so that That is, the electronic volume 6a changes the resistance value level so as to have a resistance value corresponding to the value of the setting signal from the control circuit 4, and changes the level of the ringer signal to be controlled.

A recording medium 7 holds an execution program of the control circuit 4 and various data. 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 reducing the ringer volume. ), 12 is a dial key, 13
Is a display for displaying characters. In the conventional apparatus having such a configuration, the adjustment of the ringer volume when the ringer is ringing (incoming call) will be described with reference to the flowchart of FIG.

When there is an incoming call, the control circuit 4 which detects the incoming call sends a ringing tone signal to the speaker 9 connected to the call circuit 3 and the ringer sounds. In this state, the operator operates the ringer. When adjusting the volume, the adjustment key corresponding to the direction of adjustment, that is, the "UP" adjustment key 10 for increasing the volume, and the "DOWN" adjustment key 11 for decreasing the volume are pressed while the ringer is ringing. .

By this key operation, the control circuit 4 becomes "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
Activates the built-in timer, sets a certain period of time to control the sound volume at predetermined intervals (ST62), and starts monitoring within the set time. Then, the control circuit 4 monitors that the key being pressed does not change (ST63).

[0009] Then, the elapsed time is known based on the information of the timer, and if the corresponding adjustment key is being pressed after the elapse of a certain time, the volume of the electronic volume 6a is changed by one step corresponding to the type of the adjustment key. Then, the ringer volume level is changed by one step in the direction according to the type of adjustment key (ST64, ST66). At the same time, the timer is set to a certain time again (ST62), and the above step ST
Repeat steps 63 to ST64. The electronic volume 6a, which has received the volume setting signal whose volume is changed by one step, adjusts the volume to a resistance value corresponding to the volume setting signal to adjust the level of the ringing tone. Therefore, if the same adjustment key is continuously pressed, the ringer sound volume is adjusted in the target direction at regular time intervals. However, if the ringer volume level reaches the maximum or minimum level in the middle (ST65) and if the key being pressed changes, the adjustment ends at this point.

As described above, according to the conventional method, since the adjustment is always performed at a constant time interval from the time when the adjustment key is pressed, the changing point of the ringer volume may hit the silent section of the ringer ringing cycle depending on the timing of pressing the adjustment key. However, in such a case, since it is not known whether the volume is at a desired level, the volume is adjusted too much.

There is also a telephone having a liquid crystal display (LCD) 13 with a contrast adjusting function. In this case,
, An electronic volume 6b for adjusting the contrast of the liquid crystal display 13 is provided, and 10 and 1
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. The resistance value level is changed so as to have the above resistance value, and the contrast of the liquid crystal display 13 which is the control target is adjusted.
The adjustment is performed as follows.

FIG. 8 shows the contrast adjustment of the conventional liquid crystal display 13 using the "UP" adjustment key 10 and the "DO" adjustment key.
It is a simple operation flow when performing with the "WN" adjustment key 11. The conventional operation method and operation will be described with reference to this.

In this conventional apparatus, the contrast of the liquid crystal display 13 can be adjusted at any time and can be adjusted up to ± 10 steps. Further, since the contrast of the liquid crystal display 13 is adjusted according to 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 adjusting timing is secured in the recording medium 7, and the control circuit 4 counts down the setting value to obtain the timer function. Therefore, in practice, the timer function is realized as the built-in timer of the control circuit 4, but it can of course be realized by other methods. The time of the adjustment timing is not limited to the above value. First, the case of increasing the contrast of the liquid crystal display 13 will be described.

The operator presses the "UP" adjustment key 10. Then, the control circuit 4 detects the pressing of the "UP" adjustment key 10 (ST71) and sets the timer in the recording medium 7 to a value corresponding to 0.5 seconds (ST72). The control circuit 4 uses the "UP" key 1
Monitors that 0 is always pressed.

When the "UP" key 10 is being pressed (ST73) and the timer has elapsed for 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. To 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 is not adjusted to the maximum level, the control circuit 4 controls the electronic volume 6 for the liquid crystal display 13.
Adjust b by 1 level (make it darker) (ST77). "U
By continuing to press the “P” adjustment key 10, the contrast becomes darker by one level every 0.5 seconds, and the adjustment is continued 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, a case where the contrast of the liquid crystal display (LCD) 13 is lightened (thinned) 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) of FIG. 8, and the same processing as that during the pressing of the "UP" adjustment key 10 is performed except that the adjustment level is lowered (lightened).

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, while pressing the "UP" adjustment key 10, the adjustment level becomes the maximum level,
When the adjustment level reaches 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.

[0019]

As described above, there is provided a telephone having an adjusting function which is equipped with the electronic volume control and is capable of adjusting the volume of the ringer ringing sound by operating the adjustment key while listening to the ringer ringing sound. However, such a ringer ringing sound volume adjustment function of a telephone has conventionally been one step at a time, regardless of the ringer ringing cycle and the ringer phase during ringing. Since the adjustment was made so as to change, the change point of the ringer volume and the silent section of the ringer ringing 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 the silent section, humans cannot recognize it until they wait for the next voiced section. Therefore, it takes time to adjust the volume. However, there is a problem in that the operability is poor.

Further, the contrast adjustment of the liquid crystal display, which is equipped with an electronic volume control, makes it possible to adjust the contrast at regular intervals by continuously pressing the contrast adjustment key of the liquid crystal display (LCD). In the case of a telephone with a function, by continuously pressing the contrast adjustment key, the contrast is adjusted by a fixed amount at fixed intervals, and when the adjustment level reaches the maximum level or the minimum level, The adjustment is stopped, but since it is a step-by-step adjustment with a fixed amount at fixed time intervals, even if the adjustment level changes, it becomes impossible to judge visually that the adjustment is being performed, Even if the level did not change, I had the one side that the operability was poor, such as continuing the adjustment operation.

An object of the present invention is, firstly, a telephone terminal in which the ringer volume can always be adjusted at a certain timing within a voiced section to facilitate the operation of adjusting the ringer volume. It is to provide an electronic volume device for use. Secondly, it is to provide an electronic volume device in which 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.

[0023]

In order to achieve the above object, the present invention is configured as follows. That is, firstly, the electronic device for adjusting the ringer ringing volume is used in a telephone terminal device which notifies an incoming call with a ringer ringing, and adjusts the volume by a constant level at a constant time interval while the volume adjusting key is operated. In the volume device, when the volume adjustment key is operated, for the operation period,
It comprises control means for controlling to perform the volume adjusting operation for each of the constant levels in synchronization with the ringing cycle of the ringer.

Secondly, in the electronic volume device for adjusting the volume by a constant level at a constant time while the volume adjusting key is operated, the sound source for generating the adjustment change sound and the volume adjustment for the constant level are adjusted. And a control means for controlling the adjustment change sound to sound each time it is performed.

Thirdly, in the electronic volume device for adjusting the volume by a constant level at a constant time while the volume adjusting key is operated, a sound source for generating a warning sound and the volume adjustment reaching the limit are adjusted. When it is no longer possible, a control means for controlling the alarm to sound is provided.

[0026]

In such a structure, in the case of the first structure,
When the volume adjustment key is operated, the control means controls the volume adjustment operation for each fixed level in synchronization with the ringing cycle of the ringer during the operation period. Specifically, this control sets a timer as an initial value for the time required from the point of pressing the adjustment key to the arrival of the first voiced section of the next ringer ringing cycle, and when the set time elapses, only the certain level is set. The control is performed to change the time, the time required until the sounding section of the next ringer ringing cycle arrives is set again in the timer, and when the set time elapses, the control is performed to change the fixed level by a certain amount.

In the present invention, the value set in the adjustment timer is the time until the first sounding section of the next ringer ringing cycle for the first time, and the ringer ringing time for one cycle after the second time. , Since the timing when the timer reaches zero is always the first voiced section in the ringer ringing cycle, the change point of the ringer volume is always a fixed timing regardless of the timing of pressing the key or the phase of the ringer. , That is,
It can be fixed to the voiced section of the ringer ringing cycle. Therefore, according to the present invention, it is possible to always adjust the ringer sound volume at a certain timing within the sound section, thereby facilitating the adjustment operation of the ringer sound volume.

Further, in the case of the second configuration, there is a sound source for generating the adjustment change sound, and by operating the volume adjustment key, the control means is operated at a constant level for every constant time over the operation period of the volume adjustment key. At the same time as the volume adjustment is performed, the adjustment change sound is controlled to ring each time the volume adjustment is performed at the constant level.
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 emitted at the same time as the adjustment of the contrast of the liquid crystal display, thereby changing the adjustment level. Other than the eyes,
You will be able to judge by your ears. Therefore, according to the present invention, it is possible to easily grasp the progress of the density adjustment of the liquid crystal display and improve the operability of the contrast adjustment.

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

[0030]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An 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 that connects the exchange to the telephone body 1, and 3 is a communication circuit. For connection between the telephone line 2 having a two-line configuration and the handset side having a four-line configuration, a two-line to four-line conversion is performed to pass an audio signal Or switch the circuit to a speaker or microphone for a loud call, adjust the output to the speaker so that the volume corresponds to the volume setting signal, or give a ringer ringing signal to the speaker when an incoming call arrives. And has a function of outputting dial information or the like given from a control circuit described later to a telephone line.

A control circuit 4A plays a central role in controlling each component of the telephone body 1A, and is composed of 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 shown 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 sound increase, and every predetermined time corresponding to the operation time of the adjustment key for sound reduction. 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 has a ringer volume corresponding to the value of the setting signal.
It adjusts the level of the ringer signal.

Reference numeral 6b is 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 to decrease the density setting signal by one step at every predetermined time, and the electronic volume 6b for contrast adjustment adjusts the liquid crystal display 13 so that the density corresponds to the density setting signal from the control circuit 4A. It is a thing.

A recording medium 7 holds an execution program of the control circuit 4A and various data. 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 for reducing the ringer volume (“DOWN” key), 10a is an adjustment key for increasing the display density of the liquid crystal display 13, and 11b is for decreasing the display density of the liquid crystal display 13. Is an adjustment key, 12 is a dial key, and 13 is a display for displaying characters.

Reference numeral 14 denotes a sound source circuit, which is a circuit for generating a predetermined adjustment sound, a warning sound, and the like for notifying adjustment execution at the time of contrast adjustment. When the contrast adjustment is executed, the control circuit 4A determines the output of the tone generator circuit 14 to the communication circuit 3 each time a change of one level (one step) of the density (one step density adjustment) is performed. Of the sound source circuit 14 under the control of the control circuit 4A so that the speaker 9 can be supplied to the speaker 9 for a predetermined short time. It has a function.

The adjustment keys 10a, 11a, 10b, 1
1b is provided with a ringer volume adjustment and a contrast adjustment separately, but if the mode can be switched by 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. Like the conventional example, the embodiment will first describe adjustment of the ringer volume when the ringer is ringing (incoming call).

Control circuit 4A which detects the arrival of an incoming call
9 connected to the call circuit 3 under the control of
A ringing tone signal is sent to the ringer, and the ringer sounds. In this state, when the operator adjusts the ringer sound volume, the adjustment key corresponding to the direction of adjustment, that is, the "UP" adjustment key 10a, if it is desired to increase the volume. Further, if it is desired to make it smaller, the "DOWN" adjustment key 11a is pressed while the ringer is ringing.

By this key operation, the control circuit 4A detects that the adjustment key 10a or 11a is pressed (S
2a). Then, the control circuit 4A sets the time from the present time to the first voiced section of the next ringer ringing cycle in the timer data area in the recording medium 7 (S2b). Then, the set value is counted down and the data is updated (the built-in timer function of the control circuit 4A). Next, the control circuit 4A
Monitors that the key being pressed does not change (S2c).

When the first sounding section of the ringer ringing cycle is reached, that is, the value of the timer function becomes zero.
If the corresponding adjustment key 10a or 11a is being pressed at the time of (S2d), the ringer volume level is changed by one step in the direction according to the type of the adjustment key (S2f), and at the same time the ringer ringing for one cycle is activated. Set the time to the timer function (S2g),
(S2c) to (S2g) are repeated. After that, in the first voiced 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) and 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 with the adjustment timing, the time required from the start of the operation of the adjustment key to the next ringing of the ringer is set in the timer at the start of the operation. After that, the timer value is set to the ringing cycle of the ringer, and the timer set value is divided between the adjustment start time (first time) and the second time and thereafter, so that the operation timing of the adjustment key Even if it deviates from the phase of, regardless of this,
It becomes possible to change the sound volume at a certain fixed timing, that is, in the voiced section of the ringer ringing cycle. Therefore, the actual volume corresponds to the adjustment amount, the volume adjustment operation becomes 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 adjustment keys.

In this embodiment, the contrast of the liquid crystal display 13 can be adjusted at all times by ± 1 as in the conventional example.
It shall be possible to make zero-level adjustments. Further, since the contrast of the liquid crystal display 13 is adjusted according to the pressing time of the adjustment key, the adjustment timing when the adjustment key is pressed is 0.5 seconds as in the conventional example. It should be noted that the time of this adjustment timing and the adjustment stage are not limited to these values.

First, the case of increasing the contrast of the liquid crystal display 13 will be described. In this case, the operator presses the "UP" adjustment key 10b. Then, the control circuit 4A detects pressing 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 whether the "UP" adjustment key 10b is continuously pressed. And
"UP" adjustment key 10b is being pressed (S3c), and
When the timer has passed 0.5 seconds (S3d), the control circuit 4A resets the timer to a value equivalent to 0.5 seconds (S3e) and performs the adjustment process. In the adjustment processing, the current density setting value is changed to a high 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 it is not the maximum level, it is changed. The density set value is given to the electronic volume 6b.

The electronic volume 6b adjusts the liquid crystal display 13 to the contrast corresponding to the given density set value. In this way, after determining whether the contrast of the liquid crystal display 13 has been adjusted to the maximum level (S3
f), perform density adjustment processing. Since the first operation is not adjusted to the maximum level, the control circuit 4 adjusts the electronic volume 6b for the liquid crystal display 13 by increasing the level by 1 level (darkening) (S3g).

At this time, an adjustment change sound is emitted to notify the operator of the change in the adjustment level. In order for the adjustment change sound to output the sound source of the sound source circuit 14 to the speaker as it is, the control circuit 4A causes 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 to pass through the speaker. Ring from 9. Sound source circuit 14 here
It is assumed that the internal sound source is always given to the communication circuit 3.

In this way, the "UP" adjustment key 10b
By continuing to press, the contrast is increased by 1 level every 0.5 seconds, and at the same time, the adjustment change sound is emitted from the speaker 9 until the contrast maximum level (initial value +10 level) is reached. , Adjustment will continue. When the contrast maximum level is reached, even if the "UP" adjustment key 10b is continuously pressed in this state, there is no further contrast level.
The contrast does not change any more, and the adjustment change sound is naturally not emitted. "UP" adjustment key 10 during adjustment
If the pressing of b is stopped, the adjustment ends at this point.

Next, the 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 corresponding to 0.5 seconds (S3j). Then, the control circuit 4A monitors that the "DOWN" adjustment key 11b is continuously pressed.

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

The electronic volume 6b adjusts the liquid crystal display 13 to the contrast corresponding to the given density set value. After determining in this way whether the contrast of the liquid crystal display 13 has been adjusted to the minimum level (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 adjustment change sound causes the sound source of the sound source circuit 14 to be output to the speaker as it is, so that the control circuit 4A allows 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 to pass through. This causes the speaker 9 to ring.

When the contrast minimum level is reached,
Even if the "DOWN" adjustment key 11b is continuously pressed in this state, there is no further contrast level.
The contrast does not change any more, and the adjustment change sound is naturally not emitted. If the pressing of the "DOWN" adjustment key 11b is stopped during the adjustment, the adjustment is finished at this point.

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

As described above, if the density changes during the contrast adjustment of the liquid crystal display, the adjustment change sound sounds, and if the density does not change, the adjustment change sound does not sound.
It is possible to know the adjustment timing and change with eyes and ears, and also to know when the adjustment value does not change. As described above, since the adjustment change sound is sounded when the adjustment level changes, there is an advantage that the change in the adjustment value can be judged not only by the eye but also by the ear.

Next, another embodiment of contrast adjustment will be described. In the present embodiment, the contrast adjustment of the liquid crystal display 13 can always be adjusted as in the previous embodiments, and the number of adjustment steps is ± 10 steps. Also, since the contrast of the liquid crystal display 13 is adjusted according to 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 this adjustment timing and the adjustment stage are not limited to these values.

First, the case of increasing the contrast of the liquid crystal display 13 will be described. The operator is "UP"
Press the adjustment key 10b. The control circuit 4A detects the pressing of the "UP" adjustment key 10b (S4a), and sets the timer incorporated in the control circuit 4A to a value corresponding to 0.5 seconds (S4b). The control circuit 4A monitors that the "UP" adjustment key 10b is constantly pressed, and when the "UP" adjustment key 10b is being pressed (S4c) and the timer has elapsed for 0.5 seconds (S4d),
The control circuit 4A resets the timer to a value equivalent to 0.5 seconds (S
4e) Before the adjustment processing starts, 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 up to the maximum level, the control circuit 4A raises the current density set value by one step and the liquid crystal display 1
It is given to the electronic volume 6b for 3 to adjust the density by one level (darker).

By continuing to press the "UP" adjustment key 10b, the contrast is increased by one level every 0.5 seconds, and adjustment is continued until it reaches the maximum level (initial value +10 level). Then, during the adjustment, "UP" adjustment key 10b
When the pressing of 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 emitted to inform the operator that the adjustment level will not change (S4h). The warning sound is generated by allowing the control circuit 4A to pass 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. To do. It is assumed that the sound source in the sound source circuit 14 here is always output to the call circuit 3.

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

Next, a case where the contrast of the liquid crystal display 13 is lightened will be described. The operator adjusts the contrast of the liquid crystal display 13 by pressing the "DOWN" adjustment key 11b. 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 continuously pressed, the adjustment key 11b is being pressed (S4m), and the timer is
When 0.5 seconds has elapsed (S4n), the control circuit 4A sets the timer to 0.
The value is reset to a value equivalent to 5 seconds (S4q), and the adjustment process starts, but before that, the control circuit 4A determines whether the contrast of the liquid crystal display 13 has been adjusted to the minimum level (S4p).

If the adjustment has not been made to the minimum level, the control circuit 4A lowers the current density set value by one step, and the liquid crystal display 1
The density is adjusted to be one level lower (thinner) by giving it to the electronic volume 6b for 3 (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 manner, the contrast is decreased by one level every 0.5 seconds, and the adjustment is continued until it reaches the minimum level (initial value −10 level). The adjustment level is the minimum level (initial value −10 level) while the “DOWN” adjustment key 11b is pressed.
When the adjustment has been completed, a warning sound is emitted to inform the operator that the adjustment level will not change anymore.
(S4r). When the pressing 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 darkness does not change during the contrast adjustment, a warning sound is sounded to inform the user. At the same time, since the warning sound is stopped when the adjustment operation is completed, the operator can also be notified from the ear that the adjustment level has not changed.

The present invention is not limited to the embodiments described above and shown in the drawings, but can be appropriately modified and carried out without departing from the scope of the invention. For example, the second and third embodiments are possible. Although the example of the liquid crystal display is given in the embodiment, it can be applied to the speaker volume, the ringer volume handset reception volume adjustment, and the like. Further, not only the telephone, but also a facsimile device,
Using a liquid crystal display or speaker like an electronic notebook,
It can be applied to electronic devices that adjust with an electronic volume. Further, by combining the two methods described as the embodiments of the contrast adjustment of the liquid crystal display, it is possible to notify both the progress of the process and the reaching of the adjustment limit by sound, so that the operability is further improved. Contribute to.

As described above in detail, the first aspect of the present invention is:
The electronic volume device for adjusting the ringer ring volume is used for a telephone terminal device configured to notify an incoming call by a ringer ring, and adjusts the volume by a fixed level at fixed time intervals while the volume adjustment key is operated. When the adjustment key is operated, for the operation period,
The present invention comprises a control means for controlling to perform the volume adjustment operation for each constant level in synchronization with the ringing cycle of the ringer, and secondly, the volume adjustment key is operated while the volume adjustment key is operated. An electronic volume device that adjusts the volume by a constant level for each time includes a sound source that generates an adjustment change sound, and control means that controls the adjustment change sound to ring each time the volume adjustment for the constant level is performed. Is configured as
Thirdly, in the electronic volume device that adjusts the volume by a constant level at regular intervals while the volume adjustment key is operated, the sound source that emits a warning sound and the volume adjustment reach the limit and cannot be adjusted. When
And a control means for controlling the alarm to sound.

Then, in the case of the first configuration, the control means operates for the operation period when the volume adjustment key is operated,
It is said that the control is performed so as to perform the volume adjusting operation for each constant level in synchronization with the ringing cycle of the ringer. As a result, the timing during volume adjustment is always set to the voiced section within the ringer ringing cycle, so the change point of the ringer volume is always a certain timing regardless of the operation timing of the adjustment key or the phase of the ringer. That is, the ringer sounding period can be fixed to the voiced section, and therefore the adjusted sound volume can be adjusted while always listening, so that the operation of adjusting the ringer sound volume can be facilitated.

Further, in the case of the second configuration, there is a sound source which produces the adjustment change sound, and by operating the volume adjustment key, the control means is operated at a constant level for every constant time over the operation period of the volume adjustment key. At the same time as adjusting the volume each time, the adjustment change sound is controlled to sound each time the volume adjustment is performed by the constant level. Therefore, when this configuration is used for the 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, which allows the change in the adjustment level to be determined by the eyes as well as the ears.
Therefore, according to this configuration, it is possible to easily grasp the progress of the density adjustment of the liquid crystal display and improve the operability of the contrast adjustment.

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

[0071]

As described in detail above, according to the present invention,
It is possible to provide an electronic volume device for a telephone terminal in which the ringer volume can always be adjusted at a certain timing within a voiced section to facilitate the adjustment operation of the ringer volume, and a liquid crystal display device. It is possible to provide an electronic volume apparatus 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 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 flow chart showing an operation example of the conventional example of FIG.

[Explanation of symbols]

1A: telephone body, 2 ... telephone line, 3 ... call 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 ... indicator, 14 ... sound source circuit.

Claims (3)

[Claims] 1. An electronic volume device for adjusting the ringer ring volume, which is used in a telephone terminal device adapted to notify an incoming call by a ringer ring, and which adjusts the volume by a constant level at constant intervals while a volume adjusting key is operated. In addition, when the volume adjustment key is operated, a control means is provided for controlling the volume adjustment operation for each fixed level in synchronization with the ringing cycle of the ringer during the operation period. And electronic volume device. 2. An electronic volume device that adjusts the volume by a constant level at regular intervals while the volume adjustment key is operated, and a sound source that generates an adjustment change sound and a volume adjustment for the constant level each time. An electronic volume device comprising: a control unit that controls the adjustment change sound to sound. 3. An electronic volume device that adjusts the volume by a constant level at regular intervals while the volume adjustment key is operated, and when a sound source that emits a warning sound and the volume adjustment reaches the limit and cannot be adjusted. ,
An electronic volume device comprising: a control unit that controls the alarm sound to sound.