JPH11275185A - Mobile phone equipment - Google Patents

Abstract

(57) [Summary] [Problem] To provide a mobile telephone device capable of unilaterally disconnecting a call without depending on the user's speech and without losing gratitude. SOLUTION: In response to a specific key switch operation,
There is provided a level changing means for gradually lowering the transmission level and / or the reception level during a call. When a specific key switch is operated, the transmission level and / or the reception level during a call are gradually reduced, so that the phenomenon that the call quality deteriorates or the call is interrupted can be produced, and the user side You can unilaterally disconnect the call without losing gratitude without the need for adventurous speech.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a portable telephone, a PHS
Or, it relates to a mobile telephone device such as a car telephone.

[0002]

2. Description of the Related Art In recent years, mobile telephone devices, particularly mobile phones and PHS, have become remarkably widespread. By the way, such mobile telephone devices are often used exclusively by owners as compared with general subscriber telephones, and the communication partner is limited to a specific range such as a close person. The situation has become unavoidable to call from the other party.

FIG. 4 is a conceptual communication system diagram including a conventional mobile telephone device, wherein 1 is a mobile telephone device, 2 is a radio base station, 3 is a mobile telephone exchange, 4 is a public telephone network, and 5 is a public telephone network. A subscriber telephone connected to a public telephone network. Note that the wireless base station 2 (MBS) performs wireless communication with the mobile telephone device 1 located in a small zone (area) of several hundred meters or several kilometers, and the mobile telephone exchange 5 has a plurality of mobile telephone exchanges. A radio network controller (MCS) that integrates the radio base stations 2 for each service area, a mobile telephone exchange (AMC) that performs exchange control of the MCS and the public telephone network 4, and a subscriber location (the mobile telephone device 1) ) Is registered in the home memory station.

When calling the mobile telephone device 1 from the subscriber telephone set 5, first, the mobile telephone device 1 is connected to the AMC via a not-shown exchange of the public telephone network 4. The AMC receives the position information of the mobile telephone device 1 registered in the subscriber memory of the home memory station, specifies the current position of the mobile telephone device 1 (which service area is located), and then changes the service area. The general paging signal is transmitted from all MBSs in the service area via the MCS to be supervised, and the mobile telephone device 1 that has received the paging transmits a response signal.
Upon receiving the response signal, the MBS transmits a response signal to the AMC and simultaneously transmits a communication channel designation signal, and the mobile telephone device 1 automatically switches to the designated channel to establish a call.

[0005]

In the above-mentioned mobile telephone device, when a call is unilaterally terminated during a call, some reasoning is generally required from the viewpoint of not losing gratitude. For example, "Because I'm on the train now ..."
And so on. Thus, the call can be disconnected without harming the other party's feelings. However, some people still talk without fear. In this case, the only way to do this is to press the disconnect button, but not for the faint of heart.

[0006] Therefore, in the conventional mobile telephone device, in order to end the call unilaterally without losing gratitude, a flexible manner of speaking on the part of the user is required, but such speech is not necessarily used by anyone. Since it is clear that they have not yet mastered, there has been a technical problem to be solved, which is still insufficient in the usage form of "one-way disconnection so as not to lose gratitude".

SUMMARY OF THE INVENTION It is an object of the present invention to provide a mobile telephone device capable of unilaterally disconnecting a call without relying on the user's speech.

[0008]

The invention according to claim 1 is
A level changing means for gradually lowering a transmission level and / or a reception level during a call in response to an operation of a specific key switch is provided. The invention according to a second aspect is characterized in that a level changing means for gradually increasing the error correction determination level of the received signal in response to an operation of a specific key switch is provided. The invention according to a third aspect is characterized in that a level changing means for gradually increasing the determination level of the battery voltage in response to an operation of a specific key switch is provided. The invention according to claim 4 is characterized in that a noise mixing means for mixing noise in a transmission signal in response to an operation of a specific key switch is provided.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the drawings, taking a portable telephone as an example. In FIG. 1, reference numeral 10 denotes a mobile phone. Mobile phone 10
A display unit 13 such as a liquid crystal, a key switch group 14, a speaker (receiver) 15 and a microphone (transmitter) 16 are laid out on a front surface of a case 12 in which an antenna 11 protrudes from an upper part of an appropriate design. It is configured.

Here, the key switch group 14 generally includes
On-hook key 14a, off-hook key 14b, 0-9
Number key 14c, asterisk (*) key 1
4d, a sharp (#) key 14e, a power key, a mode key, a clear key, and the like (not shown). In the present embodiment, in addition to these keys, a special key switch 14f (for convenience) (Referred to as “production key”)
It has. The effect key 14f is a key that is pressed when the call is unilaterally disconnected so as not to lose gratitude, as will be apparent from the following description.

FIG. 2 is a schematic block diagram of the mobile phone 10. 2, reference numeral 20 denotes a high-frequency unit, reference numeral 21 denotes a level detector, reference numeral 22 denotes a transmission / reception unit, reference numeral 23 denotes a control unit (level changing means), reference numeral 24 denotes a battery, and other elements are the same as those of FIG. is there. That is, 11 is an antenna, 1
3 is a display unit, 14 is a key switch group, 15 is a speaker,
16 is a microphone.

Here, the antenna 11 receives a radio wave from the nearest radio base station (MBS) or emits a radio wave to the base station, and the high frequency section 20 converts the high frequency radio wave into a low frequency radio wave. The level detector 21 converts a reception signal or a transmission signal into a high-frequency transmission radio wave. The level detection unit 21 receives a reception radio wave or a transmission radio wave (generally, a power level of a carrier frequency; hereinafter, referred to as a transmission level or a reception level). The transmission / reception unit 22 encodes a transmission signal or decodes a reception signal according to a predetermined telephone protocol, the receiver 15 reproduces the reception signal into an audible sound, the transmission unit 16 Is a device for converting voice into a transmission signal, and the display unit 13 is provided with various information necessary for telephone operation (telephone number, abbreviated number, registered name of the other party, system setting display, battery status, reception status). Key switch group 14 includes various key switches necessary for telephone operation, the control unit 23 controls centrally the operation of the telephone, and the battery 24 supplies power to various parts of the telephone. It is.

In particular, the mobile phone 1 according to the present embodiment
When a specific key (effect key 14f) of the key switch group 14 is depressed during a call, the transmission level or the reception level of the high-frequency unit 20 is controlled by a specific program (level control processing program) executed by the control unit 23. Has a unique function of obtaining an effect of reducing one or both of them.

In a mobile telephone device such as a portable telephone or a PHS, from the viewpoint of effective use of radio waves, a number of channels are created by dividing an allocated frequency at regular frequency intervals.
The frequency division multiple access (FDMA) method of searching for and connecting to an available channel is adopted (*), and the mobile phone 10 of the present embodiment naturally includes circuit elements for that purpose. Since they are not directly related, they are omitted in the figure. * For analog system.
The digital method is a time division multiple access (TDMA) method,
A code division multiple access (CDMA) system is adopted.

FIG. 3 is a schematic flowchart of the “level control processing program”. This flow is executed by the control unit 23 periodically. When the level control process is started, first, it is determined whether the effect key 14f is pressed down (S1). In the illustrated flow, for example, the value of a specific bit of the mode register is checked. If the same bit is set in response to the depression of the production key 14f and the reset is performed in response to the depression of the clear key, the determination in step S1 is made after the depression of the production key 14f. When the production key 14f is not depressed, or when the clear key is depressed after the production key 14f is depressed, the determination becomes "NO". Therefore, only after the production key 14f is depressed. , The subsequent steps (S4 to S6) are executed, and otherwise, the process can be immediately terminated.

If the effect key 14f has been depressed, first, the transmission level and the reception level are fetched from the level detector 21 (S2, S3). These levels are the current strengths of the transmitted and received radio waves. If both the transmission level and the reception level are the minimum values, that is, if the level cannot be further reduced, for example, if the level is close to zero (NO in S4), the process is immediately terminated. In the case of YES in S4), the transmission level and the reception level are reduced by the set values (the set value for the transmission level: ΔPT, the set value for the reception level: ΔPRX) (S5, S6).
That is, assuming that the original transmission level is PTX and the original reception level is PRX, the reduced levels are PTX, respectively.
X−ΔPTX and PRX−ΔPRX.

Incidentally, since the level control processing program is periodically executed, the transmission level and the reception level at the second execution are respectively PTX-2ΔPTX and PRX-2Δ
PRX, and the third execution time is PTX-3ΔP
TX, PRX-3ΔPRX,..., M execution times become PTX-mΔPTX, PRX-mΔPRX, respectively, and eventually, PTX-mΔPTX and PRX-mΔPRX
Is a level that cannot be further reduced (judgment level of S4)
Will be reduced to Here, when the transmission level and the reception level of the mobile phone device 10 decrease, a phenomenon that the call quality deteriorates or the call is interrupted occurs, and this phenomenon often appears in a place where the radio wave condition is poor. Many people do not experience any special discomfort if the call is suddenly dropped below. Rather, it gives up as a problem specific to mobile phones.

The present embodiment attempts to forcibly terminate a call while preventing the other party from feeling uncomfortable by making use of the problem peculiar to the mobile phone and causing the above phenomenon in a simulated manner. Things. That is, when the production key 14f is pressed when the call is to be terminated halfway, the transmission level and the reception level gradually decrease by ΔPT and ΔPR in each execution cycle of the level control processing program, and finally, the communication quality deteriorates. In this situation, the other party will no longer be surprised at the sudden end of the call, and will not be disrespectful, since the call may be interrupted. Therefore, according to the present embodiment, it is possible to unilaterally disconnect a call without losing gratitude without needing a user's adventurous speech. Obtainable.

In the present embodiment, both the transmission level and the reception level are reduced, but the invention is not limited to this. In short, it is only necessary to be able to produce a phenomenon that the call quality is deteriorated or the call is interrupted, and either one may be performed, or the error correction of the received signal or the determination level of the battery voltage may be increased. Good.

Alternatively, in addition to the above level operation, for example, an operation of mixing noise into a transmission signal may be performed. In this case, the control unit 23 functions as a noise mixing unit. Further, in the above embodiment, the expression "in response to the operation of a specific key switch" is used, but this is not limited to a mechanical key switch, but may be a soft switch by detecting sound, vibration, light, or the like. It can also be applied to

[0021]

According to the first aspect of the present invention, when a specific key switch is operated, the transmission level and / or the reception level during a call are gradually lowered, so that the call quality deteriorates. A phenomenon in which a call is interrupted can be produced, and the call can be unilaterally disconnected so as not to lose gratitude without requiring the user's flexible speech. According to the second aspect of the present invention, when the specific key switch is operated, the determination level of the error correction of the received signal is gradually raised, so that the above phenomenon can be similarly produced. According to the third aspect of the present invention, when a specific key switch is operated, the determination level of the battery voltage is gradually increased, so that the above phenomenon can be similarly produced. According to the fourth aspect of the present invention, when a specific key switch is operated, noise is mixed in the transmission signal, so that the above phenomenon can be similarly produced.

[Brief description of the drawings]

FIG. 1 is an external view of an embodiment.

FIG. 2 is a block diagram of an embodiment.

FIG. 3 is a flowchart of the embodiment.

FIG. 4 is a usage state diagram of a conventional example.

[Explanation of symbols]

 14f production key (key switch) 23 control unit (level changing means, noise mixing means)

Claims (4)

[Claims] 1. In response to an operation of a specific key switch,
A mobile telephone device comprising level changing means for gradually lowering a transmission level and / or a reception level during a call. 2. In response to an operation of a specific key switch,
A mobile telephone device comprising level changing means for gradually increasing the error correction determination level of a received signal. 3. In response to an operation of a specific key switch,
A mobile telephone device comprising level changing means for gradually increasing a determination level of a battery voltage. 4. In response to operation of a specific key switch,
A mobile telephone device comprising a noise mixing means for mixing noise into a transmission signal.