JP4647349B2 - Volume adjustment method and volume adjustment system - Google Patents

Description

  The present invention relates to a volume adjustment method and volume adjustment system for adjusting the volume of a terminal.

  Conventionally, when listening to music on a mobile terminal in a closed space in a train or a hotel lobby, if the volume is high, sound leakage may occur, causing inconvenience to surrounding people.

  For this reason, there is a technique in which the terminal broadcasts an IP packet to determine whether or not a response is returned, and when there is a response, the volume is reduced (see Patent Document 1).

There is also a portable device that receives a signal from the outside, measures the ambient noise level, and adjusts the volume (see Patent Document 2).
JP 2004-32394 A Japanese Patent Laid-Open No. 10-163776

  In the former case, the volume can be reduced when a response is returned from a peripheral terminal by broadcasting an IP packet, but the distance between the terminals is not taken into account and the wireless communication can be performed. Even if the distance between the terminals is within 1m or 5m or more, the way the sound is heard is completely different. There was a problem that it could not be adjusted.

  In the latter case, the volume is adjusted only by the ambient noise level. Therefore, there is a problem that the volume is adjusted regardless of whether the distance from other terminals is large or small.

  Also, there is a problem that the operation is troublesome if the person watching music on the terminal senses the surrounding situation (the situation in a train, a quiet place, etc.) and adjusts the volume each time. It was.

  In order to solve these problems, the present invention detects an IC tag attached to another terminal around the IC tag attached to the terminal, further measures a distance or noise level, or detects a place. In other words, the volume of the terminal is automatically adjusted to an appropriate level, and the automatic return to the original volume after a predetermined time has been repeated.

  The present invention attaches an IC tag to a terminal, detects an IC tag of another terminal, measures a distance and noise level, and further detects a place, and automatically adjusts the volume of the terminal appropriately. At the same time, after the elapse of a predetermined time, it automatically returns to the original volume, and the volume of the terminal can be automatically and appropriately adjusted easily and reliably without bothering people.

  The present invention detects the IC tag attached to the other terminal around the IC tag attached to the terminal, further measures the distance and noise level, detects the location, etc. It automatically adjusts to a certain level and automatically returns to the original volume after a predetermined time.

FIG. 1 shows a system configuration diagram of the present invention.
In FIG. 1, a terminal 1 is a portable terminal (portable music terminal) that reproduces music or the like, and is attached with an IC tag 19. Here, information is wirelessly transmitted from an IC tag 21 attached to another terminal 2. And the volume is adjusted, and is composed of an IC tag reading unit 11, a processing unit 12, a display unit 16, a current volume level information table 17, a maximum volume level information table 18, and the like.

  The IC tag reading unit 11 transmits information (specific information) from the IC tag 21 that is wirelessly transmitted and attached to another terminal 2.

  When the processing unit 12 reads information from the IC tag 21 attached to the other terminal 2 by the IC tag reading unit 11, the processing unit 12 adjusts the sound volume based on the information. 13 and volume adjusting means 15 and the like.

  The determination means 13 determines whether the information read from the IC tag 21 attached to the other terminal 2 is specific information for volume adjustment, or if it is determined as specific information, the current volume level and a predetermined volume The volume is adjusted by comparing with the level (for example, the volume is adjusted such that the volume is reduced to a predetermined volume level or restored to the original volume after a predetermined time has elapsed) (see FIG. 2 and the like).

The volume adjustment means 15 adjusts the volume (see FIG. 2 and the like).
The display means 16 displays various information such as a sound volume reduction, for example, on a liquid crystal panel provided in the terminal 1.

The current volume level information table 17 is a table for setting the current volume.
The maximum volume level information table 18 is a table for setting the maximum volume level to be adjusted.

  The IC tag 19 is an IC tag attached to the terminal 1 and in which specific information is written. When the other terminal 2 reads the specific information from the IC tag 19 attached to the terminal 1, the other terminal 2 performs the volume adjustment described below in the same manner.

  The terminal 2 is another terminal, for example, a music portable terminal, to which an IC tag 21 in which specific information is written is attached.

  The IC tag 21 can read and write information wirelessly. Here, the IC tag 21 is a target IC tag for reading the written specific information by the IC tag reading unit 11 of the terminal 1.

Next, the operation of the configuration of FIG. 1 will be described in detail according to the order of the flowchart of FIG.
FIG. 2 shows a flowchart for explaining the operation of the present invention.

  In FIG. 2, S1 reads the IC tag 21 of the other terminal 2 for every fixed time. This is because the IC tag reading means 11 constituting the terminal 1 of FIG. 1 transmits a read signal to another terminal 2 at regular intervals, and information (from the IC tag 21 attached to the other terminal 2 ( For example, specific information) is read (so-called polling is performed toward all the IC tags 21 and specific information of the IC tags 21 mounted on other terminals 2 is read).

  In S2, it is determined whether the reading is successful. It is determined whether information (specific information) has been successfully read from the IC tag 21 attached to another terminal 2. If YES, the process proceeds to S4. In the case of NO, the sound volume level is restored to the original volume level after a lapse of a predetermined time (if the volume has been reduced by reading successfully before, the volume level is restored to the original volume level after the lapse of a predetermined time), and the steps after S1 are performed. repeat. Accordingly, when the volume is reduced in FIG. 4 to be described later, when information cannot be read from the IC tag 21 attached to the other terminal 2 continuously for a predetermined time, even if the volume is increased, it is Since it has been found that no trouble is caused, it is possible to automatically restore the original volume.

  S4 reduces the volume within the maximum volume level. This is because in S2 YES, it has been found that the information (specific information) has been successfully read from the IC tag 21 attached to the other terminal 2, so that the person carrying the terminal 2 attached with the IC tag 21 is inconvenienced. The volume is automatically reduced within a predetermined maximum volume level so that it does not occur. When the volume is reduced, the original volume is stored, and the volume can be restored to the original volume in S3.

S5 displays volume reduction information by volume control. For example, as shown in (c) of FIG. 3 to be described later, on the liquid crystal display of the terminal 2,
・ "Voice control function is in operation"
Is displayed, and a message indicating that the volume has been reduced is displayed because the person carrying the terminal 2 equipped with the IC tag 21 is approaching.

  As described above, when the information (specific information) is successfully read from the IC tag 21 attached to another terminal 2 at regular intervals, the volume is automatically reduced to a predetermined maximum volume level and automatically. It is possible to display a message indicating that the amount has been reduced. If the information is not successfully read from the IC tag 21 for a certain time or longer, the volume can be automatically restored to the original volume.

FIG. 3 is an explanatory diagram of the present invention.
FIG. 3A shows an example of the IC tags 21 and 19. The IC tags 21 and 19 are IC tags that can be read (and further written as necessary) by wirelessly attached to the terminals 2 and 1, and here are specific information indicating that volume adjustment is to be performed. (Or information in which a specific bit is turned on) is set. When the illustrated specific information (specific bit is on) can be read from the other terminal 2, the result of S2 in FIG.

  FIG. 3B shows an example of the maximum volume level information table 18. The maximum volume level information table 18 is a table in which a maximum volume to be adjusted when a person carrying another terminal 2 with the IC tag 21 is approached and information is read from the IC tag 21 is obtained in advance through experiments or the like. Here, the following information shown in the figure is registered in association with each other.

Item Maximum volume level ・ IC tag readable: 5
・ Unable to read IC tag: Unlimited ・ Others:
Here, “IC tag readable” refers to the case where the reading is successful in S2 of FIG. 2 described above, and the person carrying the other terminal 2 approaches and receives information from the IC tag 21 attached to the other terminal 2. Represents a state where the distance is close to the predetermined distance range, and here, it indicates that the volume is adjusted to the maximum volume level “5” or less. On the other hand, “IC tag cannot be read” is a case where information cannot be read from the IC tag 21 attached to another terminal 2 and it has been found that there is no person carrying the terminal 2 within a predetermined distance range. The level is “unlimited”.

  As described above, when information can be read from the IC tag 21 attached to the other terminal 2 (when IC reading is possible), a predetermined maximum volume level that does not seem to bother people is set. Thus, when a person carrying another terminal 2 approaches, it is possible to automatically adjust the sound volume to a level below the maximum volume level that does not bother the person. Then, if the person leaves and continues to be incapable of IC reading for a predetermined time (S3 in FIG. 2 described above), the original volume can be automatically restored.

FIG. 3C shows a display example. This is an example of displaying on the LCD display of the terminal 1 when the volume is automatically reduced in S5 of FIG. 2 described above.
・ "Voice control function" is operating. "
Message can be displayed to inform the person carrying the terminal 1.

  FIG. 4 shows another system configuration diagram of the present invention. In the figure, 13 and 15, 16 to 19, 19, and 21 constituting 1 and 12 excluding the IC tag distance measuring means 14 are the same as the same numbers in FIG.

  4A shows the overall system configuration, and FIG. 4B shows a detailed system configuration of the IC tag distance measuring means 14 of FIG. 4A.

  4 (a) and 4 (b), the IC tag distance measuring means 14 measures the distance to the IC tag 21 attached to another terminal 2, and includes a readability change point searching means 141, a reading The output radio wave changing unit 142, the radio wave sending unit 143, the radio wave receiving unit 144, the reception sensitivity varying unit 145, the distance measuring unit 146, the table registering unit 147, the radio wave intensity distance correspondence table 148, and the like.

  The readable / unchangeable change point searching means 141 varies the radio wave intensity transmitted toward the IC tag 21 and searches for the radio wave intensity at the change point when information can be read from the IC tag 21 and when it cannot be read (see FIG. 7 will be described later).

The read output radio wave varying unit 142 varies the output of the radio wave to be transmitted.
The radio wave transmission means 143 transmits (transmits) radio waves.

  The radio wave receiving means 144 receives radio waves (signals) in response to the transmitted radio waves from the IC tag 21.

The reception sensitivity varying means 145 varies the reception sensitivity.
The distance measuring means 146 decreases the intensity of the transmitted radio wave step by step sequentially from the maximum by the readable / unchangeable point searching means 141, and the intensity of the transmitted radio wave when information cannot be read from the state where the information has been read from the IC tag 21. (Or gradually increasing the intensity of the radio wave to be transmitted stepwise from the minimum and obtaining the intensity of the radio wave transmitted when reading from the state where the information cannot be read from the IC tag 21). Based on the table (the radio wave intensity / distance correspondence table 148 in FIG. 6A), the distance to the IC tag 21 (the distance to the other terminal 2) is calculated.

  The table registration unit 147 registers the distance (maximum readable distance) in association with the radio wave intensity when the information is read from the IC tag 21 (or the radio wave intensity when the information cannot be read).

  The radio field intensity / distance correspondence table 148 changes the radio field intensity transmitted toward the IC tag 21 and transmits the radio field intensity when information is read from the IC tag 21 (or the transmitted radio field intensity when the information cannot be read). And the distance at that time is registered (see (a) of FIG. 6).

  As described above, by providing the IC tag distance measuring means 14 in the terminal 1, the terminal 1 in FIG. 4A can automatically measure the distance to the other terminal 2 to which the IC tag 21 is attached. Is possible.

Next, the operation of the configuration of FIG. 4 will be described in detail according to the order of the flowchart of FIG.
FIG. 5 is a flowchart for explaining another operation of the present invention.

  In FIG. 5, S11 reads the IC tag 21 of the other terminal 2 with the maximum radio wave intensity at regular time intervals. This is because the IC tag distance measuring means 14 constituting the terminal 1 of FIG. 4 controls the IC tag reading means 11 and transmits it to the other terminal 2 at the maximum radio wave intensity at regular intervals. Information (for example, specific information) is read from the IC tag 21 attached to the terminal (so-called polling is performed for all IC tags 21 with the maximum radio wave intensity, and the IC tag 21 attached to the other terminal 2 is specified. Read information).

  In S12, it is determined whether the reading is successful. It is determined whether information (specific information) has been successfully read from the IC tag 21 attached to another terminal 2. If YES, the process proceeds to S14. In the case of NO, the sound volume level is restored to the original volume level after a lapse of a predetermined time in S13 (if the volume has been reduced by successful reading before, the volume level is restored to the original volume level after the lapse of a predetermined time), S11 Repeat thereafter. Accordingly, when the volume is reduced in S17 of FIG. 5 and information cannot be read from the IC tag 21 attached to the other terminal 2 continuously for a predetermined time, even if the volume is increased, the surrounding people can be Since it has been found that no trouble is caused, it is possible to automatically restore the original volume.

  In S14, a distance calculation process (FIG. 7) is executed. This is because the specific information has been successfully read from the IC tag 21 attached to the other terminal 2 with the maximum radio wave intensity at S12 YES, and the distance to the IC tag 21 is calculated as shown in FIG. A distance calculation process is executed (described later in FIG. 7), and the distance L to the IC tag 21 is measured.

  In S15, the volume level is calculated according to the distance. This calculates the maximum volume level with reference to the maximum volume level table 149 of FIG. 6B based on the distance measured in S14 (FIG. 7).

  In S16, it is determined whether or not the current volume is equal to or less than the calculated volume level. This determines whether the current volume of the terminal 1 is equal to or lower than the maximum volume level corresponding to the distance calculated in S15. If YES, the process ends. In the case of NO, since the current volume is found to be equal to or higher than the maximum volume level corresponding to the distance, the current volume is set (reduced) below the volume level calculated in S17, and the volume reduction information is controlled by volume control in S18. Is displayed (displayed on the liquid crystal display of the terminal 1) to inform the person carrying the terminal 1.

  Thus, the person carrying the terminal 1 automatically calculates the distance to the IC tag 21 attached to the other terminal 2 and calculates the maximum volume level according to the distance. When compared with the sound volume level, the sound volume level can be automatically adjusted in accordance with the distance sequentially below the sound volume level corresponding to the distance (or a smaller sound volume level set in advance). Even when the distance increases, the volume level is calculated following the distance and automatically adjusted to the calculated volume level (automatic adjustment within a range not exceeding the original volume level). If the information of the IC tag 21 attached to the other terminal 2 cannot be read even after a certain period of time with the maximum radio wave intensity, the result of S12 is NO, and as described above in S13, the original volume level is automatically restored. Let

FIG. 6 shows an example table of the present invention.
FIG. 6A shows an example of a radio wave intensity / distance correspondence table of the present invention. The illustrated radio wave intensity / distance correspondence table 148 changes the radio wave intensity transmitted toward the IC tag 21 attached to the other terminal 2, and when information cannot be read from the IC tag 21 (or when it can be read). The distance is registered in association with the radio wave intensity.

  As described above, the distance when information cannot be read from the IC tag 21 (or when it can be read) is associated with the radio wave intensity transmitted to the IC tag 21 attached to the other terminal 2. By obtaining in advance an experiment and registering it as shown in the figure, the radio wave intensity transmitted toward the IC tag 21 can be varied, and the IC intensity can be calculated from the radio wave intensity when information can be read from the IC tag 21 (or when the information cannot be read). The distance to the tag 21 can be calculated.

  FIG. 6B shows an example of a maximum volume level table. The maximum volume level table 149 shown in the figure is associated with the distance (the distance to the IC tag 21 attached to the other terminal 2) calculated in the table of FIG. Is obtained in advance by experiment to obtain a volume level that does not bother other persons carrying the other terminal 2 at the distance.

  As described above, by correlating the maximum volume level in advance with an experiment in association with the distance (reading distance) to the IC tag 21 and registering it as shown in the figure, the terminal 1 attaches the IC tag 21 to the other terminal 2. And automatically adjust (reduce) the volume of the terminal 1 so as not to bother other people carrying the other terminal 2 or automatically adjust when the distance increases ( Large).

FIG. 7 shows an operation explanatory diagram (distance calculation processing) of the present invention.
7A shows a flowchart, and FIG. 7B shows an explanatory diagram.

  In FIG. 7A, S21 is set to i = 1. This is initialized with variable i = 1.

In S22, the radio wave intensity (i) is selected and the IC tag 21 is read. This is because, in FIG. 7B, which will be described later, a radio wave intensity i (i is 1 at first, and gradually increases in intensity to 2, 3, 4,...) It transmits to the IC tag 21 and tries to read information from the IC tag 21. In addition, you may reduce sequentially from the maximum radio field intensity to the minimum radio field intensity.

  In step S23, it is determined whether or not reading has been completed. In step S22, a radio wave having a radio field intensity i is transmitted to determine whether information has been read from the IC tag 21. If YES, the process proceeds to S25. In the case of NO, i = i + 1 in S24, and S22 and subsequent steps are repeated.

  In S25, since it is determined that the information can be read from the IC tag 21 in YES of S23, the distance is obtained by indexing the radio wave intensity / distance correspondence table 148 of FIG. finish.

  As described above, here, the radio wave intensity is transmitted while increasing sequentially from the minimum to the maximum (or transmitted while decreasing gradually from the maximum radio field intensity to the minimum), and the radio field intensity when the information can be read from the IC tag 21. Based on (or the radio wave intensity just before reading is impossible), the distance from the terminal 1 to the IC tag 21 (other terminal 2) is measured with reference to the radio wave intensity / distance correspondence table 148 in FIG. It becomes possible to do.

In FIG. 7, S = 1 is set to i = 1. This is initialized with variable i = 1.
In S32, the maximum readable distance with respect to the radio field intensity (i) is measured. This is because, in (b) of FIG. 7, a small radio wave intensity is sent out of the intensity obtained by dividing the radio wave intensity from the minimum to the maximum by a predetermined number, and a person moves the IC tag 21 from a distance (or from near). The distance when the information can be read after being moved far (or the distance immediately before the information cannot be read) is calculated. The calculated distance is determined as the maximum readable distance (i) in S35, and for example, the radio wave intensity “intensity i” in the radio wave intensity / correspondence table 148 of FIG. In association with (when i = 1), the maximum readable distance is registered as “0.5 m”.

  In S33, it is determined whether i is completed. In the case of YES, the registration in the radio wave intensity / distance correspondence table 148 in FIG. On the other hand, if NO, i = i + 1 in S34, and S32 and subsequent steps are repeated for the next variable i.

  As described above, the maximum readable distance is registered in association with the radio wave intensity in the radio wave intensity / correspondence table 148 of FIG.

  In FIG. 7B, the terminal 1 is the terminal 1 of FIG. 1 and transmits with different radio wave intensity (intensity 1, intensity 2... Intensity 7...), And at that time, another terminal. The distance when the information can be read from the IC tag 21 attached to 2 is obtained by actual measurement.

  FIG. 8 shows another system configuration diagram of the present invention. Here, 11, 13, 15, 17, 18, 2, 21 are the same as those having the same numbers in FIG.

  In FIG. 8, the noise measuring means 141 measures the noise level around the terminal 1.

Next, the operation of the configuration of FIG. 8 will be described in detail according to the order of the flowchart of FIG.
FIG. 9 is a flowchart for explaining another operation of the present invention.

  In FIG. 9, S41 reads the IC tag 21 of the other terminal 2 for every fixed time. In FIG. 8, the IC reading unit 11 of the terminal 1 reads the information of the IC tag 21 of another terminal 2 by changing the radio wave intensity.

  In S42, it is determined whether the reading is successful. If YES, the process proceeds to S44. If NO, the original volume level is restored after a predetermined time in S43. This is because if the information cannot be read from the IC tag 21 even after a predetermined time has elapsed from the IC tag 21 of the other terminal 2, the person carrying the other terminal 2 wearing the IC tag 21 is separated by a predetermined distance or more. Even if the volume is increased, it does not cause trouble, so the original volume is restored and S41 is repeated.

  S44 is YES in S42, and it is determined that a person holding the other terminal 2 has come within a predetermined distance range in which information can be read from the IC tag 21 attached to the other terminal 2, so the ambient noise is measured. .

  In S45, it is determined whether the current volume is equal to or lower than the volume level corresponding to the measured noise level. This is because the current volume uttered by a player not shown in the terminal 1 corresponds to the maximum volume extracted by referring to the volume level information table of FIG. 10 described later based on the ambient noise level measured in S44. It is discriminated whether it is below the level (maximum volume level that may be uttered in correspondence with ambient noise). In the case of YES, it is found that the volume uttered from the current terminal 1 is less than the maximum volume level corresponding to the surrounding noise level, and it is determined that the volume is not disturbing to those who have other terminals 1 ,finish. On the other hand, in the case of NO, it is found that the volume uttered from the current terminal 1 is not less than the maximum volume level corresponding to the surrounding noise level, and is a volume that causes trouble for people who have other terminals 1. Since it has been found, the volume is set (adjusted) within the volume level measured in S40 (or within the maximum volume level corresponding to the noise level in FIG. 10), and the volume reduction information is displayed by volume control in S47.

  As described above, when information is read from the IC tag 21 attached to the other terminal 2 in the terminal 1, the noise level around the terminal 1 is measured, and the current volume level of the terminal 1 is measured. Based on the noise level, the current volume is automatically adjusted below the noise level (or below the corresponding maximum volume level) when it is above the maximum volume level extracted with reference to the volume level information table of FIG. When it is possible to automatically prevent a person who owns 2 from having a sound that is too loud, and when information on the IC tag 21 attached to another terminal 2 cannot be read after a predetermined time has elapsed. It is possible to automatically restore the original volume.

  FIG. 10 shows an example of the maximum volume level information table of the present invention. The maximum volume level information table is obtained by experimenting and registering in advance the maximum volume level that is allowed even when speaking from the terminal 1 in association with the ambient noise level.

  By creating and registering the above maximum volume level information table in advance, the noise level around the terminal 1 is measured, and when the information can be read from the IC tag 21 attached to the other terminal 2, An allowable maximum volume level corresponding to the ambient noise level is obtained by referring to the maximum volume level information table, and when the current volume of the terminal 1 is equal to or higher than the maximum volume level, the current volume is equal to or lower than the maximum volume level. It is automatically adjusted to (or below the noise level), and when information cannot be read from the IC tag 21 even after a predetermined time has elapsed, it is possible to automatically restore the original volume.

  FIG. 11 shows another system configuration diagram of the present invention, and shows only the main part of the system configuration diagram of the terminal 1 of FIG. The illustrated processing unit 2 corresponds to the processing unit 2 in FIG. 1, and the volume control means 15 constituting the processing unit 2 is the same as the volume control means 15 in FIG. The display means 16, terminal 2, and IC tag 21 shown in the figure are the same as the display means 16, terminal 2, and IC tag 21 shown in FIG.

  In FIG. 11, the noise measuring means 141 measures the noise level around the terminal 1.

  The IC tag reading unit 142 reads information from the IC tag 21 of another terminal 2.

  The IC tag distance measuring unit 143 changes the radio wave intensity transmitted to the IC tag 21 of another terminal 2 and measures the distance to the IC tag 21 based on the radio wave intensity when information can be read from the IC tag 21. (See FIG. 7 described above).

Next, the operation of the configuration of FIG. 11 will be described in detail according to the order of the flowchart of FIG.
FIG. 12 is a flowchart for explaining another operation of the present invention.

  In FIG. 12, in S51, the IC tag 21 of the other terminal 2 is read with the maximum radio wave intensity at regular time intervals.

  In S52, it is determined whether the reading is successful. In S51, the terminal 1 reads information from the IC tag 21 attached to the other terminal 2 with the maximum radio wave intensity, and determines whether the reading is successful. If YES, the process proceeds to S54. In the case of NO, it returns to the original volume level after a predetermined time has elapsed, and S51 is repeated.

  In S54, a distance calculation process (FIG. 7) is executed. This is because it is determined in S52 YES that the information can be read from the IC tag 21 attached to the other terminal 2, and the distance from the terminal 1 to the IC tag 21 is calculated according to the flowchart of FIG.

  In S55, noise is measured. This is because the noise measuring means 141 of FIG. 11 constituting the terminal 1 measures the ambient noise level.

  In S56, the maximum volume level is set according to the noise level and the distance. This is based on the noise level around the terminal 1 measured in S55 and the distance from the terminal measured in S54 to the terminal 2 to which the IC tag 21 is attached, referring to the maximum volume level table in FIG. Then, the maximum volume level (maximum volume level uttered by the terminal 1 allowed by the ambient noise level and the distance to the terminal 2) in the corresponding column is extracted and set in a register (or memory) that adjusts the current volume. To do.

  In step S57, it is determined whether the current volume is equal to or less than the calculated maximum volume level. In the case of YES, it turns out that the current volume level is not more than the maximum volume level calculated in S56, and the volume is too high for the person who has the other terminal 2 with the IC tag 21 attached. So keep the current volume. On the other hand, in the case of NO, it has been found that the current volume level is equal to or higher than the maximum volume level calculated in S56, and the volume is too high for a person who has another terminal 2 equipped with the IC tag 21. Therefore, the volume is reduced below the volume level calculated in S58, and the volume reduction information is displayed by volume control in S59.

  As described above, when information is read from the IC tag 21 attached to the other terminal 2 by the terminal 1, the noise level around the terminal 1 is measured, the distance to the IC tag 21 is calculated, and the noise level and the distance are calculated. Based on the above, the allowable maximum volume level is extracted by referring to the maximum volume level table of FIG. 13, and automatically adjusted below the maximum volume level when the current volume of the terminal 1 is greater than or equal to the extracted maximum volume level, and The automatically adjusted message is displayed, and when the IC tag 21 is not detected even after a predetermined time, it can be automatically restored to the original volume.

  FIG. 13 shows an example of the maximum volume level table of the present invention. The maximum volume level table is a registration in which the maximum volume level allowed by the terminal 1 is experimentally determined in association with the noise level around the terminal 1 and the distance (reading distance) from the terminal 1 to another terminal 2. It is a thing.

  By creating and registering the above maximum volume level table in advance, when the terminal 1 can read information from the IC tag 21 attached to the other terminal 2, the ambient noise level and the IC tag 21 The distance is calculated, and the maximum volume level table is retrieved based on the noise level and the distance, and the maximum volume level that is allowed is extracted. When information cannot be read from the IC tag 21 even after a lapse of time, it is possible to automatically restore the original volume.

  FIG. 14 shows another system configuration diagram of the present invention. IC tag reading means 11, judgment means 13, volume adjusting means 15, display means 16, current volume level information table 17, maximum volume level information table 18, terminal 2, and IC tag 21 are the same as those having the same numbers in FIG. Therefore, explanation is omitted.

  In FIG. 14, the current location detection means 144 detects the current location, and is, for example, a known GPS receiver and its map information.

  The voice control necessary map information table 20 is a table in which a volume level (maximum volume level) is registered in advance in association with map information necessary for voice control (see FIG. 16).

Next, the operation of the configuration of FIG. 14 will be described in detail according to the order of the flowchart of FIG.
FIG. 15 is a flowchart for explaining another operation of the present invention.

  In FIG. 15, S61 reads the IC tag 21 of the other terminal 2 for every fixed time. The IC tag reading means 11 of the terminal 1 in FIG. 14 transmits radio waves and reads information (specific information) from the IC tags 21 of other terminals 2.

  In step S62, it is determined whether the reading is successful. If YES, the process proceeds to S64. In the case of NO, it returns to the original volume level after a predetermined time has passed in S63, and repeats S61 and thereafter.

  In S64, it is determined that the information has been successfully read from the IC tag 21 attached to the other terminal 2 by YES in S62, and the current location information is detected. This is because the current position detecting means 144 in FIG. 14 detects the current position, for example, the current position is detected by a known GPS.

  In S65, it is determined whether the current location is on a route for which volume suppression is necessary. This determines whether the current location detected in S64 is on the route (location) where the maximum volume level is set with reference to the volume control necessary map information table 20 of FIG. If set, the maximum volume level is extracted and stored. If YES, the process proceeds to S66. In the case of NO, since it has been found that it is not on the volume suppression path, the process returns to S61 and is repeated.

  In S66, the volume is reduced within the maximum sound volume level stored in S65 because it is determined that the sound volume is on the sound volume suppression path (on the place) by YES in S65.

S67 displays volume reduction information by volume control.
As described above, when the terminal 1 can read information from the IC tag 21 attached to the other terminal 2, the current location of the terminal 1 is detected, and the route registered with reference to the voice control necessary map information table 20 of FIG. The maximum volume level is taken out when on (location), and when the current volume of the terminal 1 is equal to or higher than the maximum volume level, a message indicating that the volume has been automatically reduced and controlled within the maximum volume level is displayed on the LCD panel. Thus, it is possible to automatically reduce the volume of the terminal 1 at the location only by setting the maximum volume level in the voice control required map information table 20 according to the location. In the case of automatic reduction, when the information cannot be read from the IC tag 21 after a predetermined time, it is possible to automatically restore the original volume.

  FIG. 16 shows an example of the voice control required map information table of the present invention. The voice control necessary map information table 20 is a table that registers in advance a pair of a route (location) for automatically reducing voice and a maximum volume level to be reduced at that time.

  By previously registering in the above-described voice control necessary map information table 20 as shown in the figure, when the terminal 1 reads information from the IC tag 21 attached to the other terminal 2, the route (location) of the current location of the terminal 1 ), The maximum volume level is extracted by referring to the voice control necessary map information table 20, and the current volume is automatically adjusted within the maximum volume level, and the information is read from the IC tag 21 even after a predetermined time elapses. When it becomes impossible to restore the original volume, it is possible to automatically restore the original volume.

  The present invention attaches an IC tag to a terminal, detects an IC tag of another terminal, measures a distance and noise level, and further detects a place, and automatically adjusts the volume of the terminal appropriately. At the same time, after the elapse of a predetermined time, it automatically returns to the original volume, and the volume of the terminal can be automatically and appropriately adjusted easily and reliably without bothering people.

It is a system configuration diagram of the present invention. It is an operation | movement explanatory flowchart of this invention. It is explanatory drawing of this invention. It is another system block diagram of this invention. It is another operation | movement description flowchart of this invention. It is an example table of this invention. It is another operation explanatory drawing (distance calculation processing) of the present invention. This is another system configuration of the present invention. It is another operation | movement description flowchart of this invention. It is an example of the maximum volume level information table of this invention. It is another system block diagram of this invention. It is another operation | movement description flowchart of this invention. It is an example of the maximum volume level table of this invention. It is another system block diagram of this invention. It is another operation | movement description flowchart of this invention. It is an example of the voice control required map information table of this invention.

Explanation of symbols

1, 2: Terminal 11: IC tag reading means 12: Processing section 13: Determination means 14: IC tag distance measuring means 15: Volume adjusting means 16: Display means 17: Current volume level information table 18: Maximum volume level information table 19 , 21: IC tag 20: Voice control required map information table

Claims (6)

In the volume adjustment method for adjusting the volume of the mobile terminal,
Each comprise an IC tag and an IC tag reader to each mobile terminal,
A step of reading information of the IC tag wirelessly from IC tag IC tag reader of a portable terminal is mounted in another portable terminal,
The distance based on the intensity of the transmission radio wave when the information is read from the IC tag or when the information cannot be read by varying the intensity of the transmission radio wave sent to the IC tag when reading the information. Calculating steps,
And a step of adjusting the volume corresponding to the calculated distance in each portable terminal. When information is read from the IC tag, measuring a noise level around the mobile terminal;
The volume adjustment method according to claim 1, further comprising a step of adjusting the volume in accordance with the measured noise level in each portable terminal. 3. The mobile terminal according to claim 1, further comprising a step of detecting the current position when information is read from the IC tag and adjusting the sound volume at a predetermined location in each portable terminal. The volume adjustment method described.   The volume is adjusted to a predetermined volume or a predetermined volume when the current volume is higher than a predetermined volume, a predetermined volume inversely proportional to the distance, a predetermined volume proportional to the noise level, or a predetermined volume corresponding to the location. The volume adjustment method according to any one of claims 1 to 3, wherein the volume is adjusted to be equal to or lower than the volume.   5. The volume adjustment method according to claim 1, wherein the information read from the IC tag is specific information or a specific bit written in the IC tag. In a volume adjustment system that adjusts the volume of a mobile device,
An IC tag and an IC tag reader;
Means for wirelessly reading information of the IC tag from an IC tag attached to another mobile terminal by an IC tag reader of a mobile terminal
The distance based on the intensity of the transmission radio wave when the information is read from the IC tag or when the information cannot be read by varying the intensity of the transmission radio wave sent to the IC tag when reading the information. Means for calculating
A volume adjustment system, characterized in that each mobile terminal is provided with means for adjusting the volume in accordance with the calculated distance.

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