JP2008193571A - Radio communication terminal - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a radio communication terminal which can solve the problem that there is troublesomeness for an operator to set volume setting (volume small) when the radio communication is used by approaching a face and volume setting (volume large) when the portable terminal is distant from the face at each time for receiving volume by a radio communication terminal in a digital MCA radio communication system, when the radio communication terminal is used at a position distant from the face, since there is a risk that transmission information of a transmitter is failed to be listened to because receiving sound is small. <P>SOLUTION: The radio communication terminal is constituted so that the volume setup is switched as a trigger by the depression of a transmission starting button 16 on the transmitting side by a control part 17 with respect to the receiving volume in carrying and the receiving volume in telephone conversation. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to reception volume processing in a digital MCA (Multi Channel Access) wireless communication system, and more particularly, to a wireless communication terminal that switches a reception volume on a receiver side by a transmission operation on a transmission side.

  In the conventional digital MCA wireless communication system, the reception volume when the wireless communication terminal is in the communication state is output at a volume preset by the operator, and then the volume is adjusted and output by the operator's volume adjustment operation. When the communication state is canceled, the volume is set to the volume set last by the operator.

  Further, in Patent Document 1 below, in a wireless device capable of selecting two communication methods, that is, a simultaneous transmission / reception method (duplex) and a press talk transmission / reception method (simplex), a duplex operation that is used with an ear close to a speaker. In order to solve the problem that the volume of received sound jumps into the ear when switching from state to simplex, a speaker, an ear speaker, and a microphone are placed on the same side of the transceiver body. Output loud sound from the speaker and use it like a normal portable wireless device. When duplexing, output the sound from the ear speaker only by electrically shutting off the speaker output. It has been proposed to control.

JP-A-8-149032

  The wireless communication terminal of the conventional digital MCA wireless system described above is usually carried at a position away from the face, and when the operator sends a voice, the operator approaches the face and sends the voice. In such an operation, the operator performs a setting operation each time the sound volume is set when the user is away from the face and when the user is close to the face. Also, when the phone is carried away at a position away from the face while the volume setting (volume is low) when the face is finally brought close, the received sound is low and there is a possibility that the transmission information of the sender may be missed.

  Therefore, an object of the present invention is to switch between a received sound volume when carried away from the face and a sound volume when the operator sends a speech by a simple operation, and a complicated operation of the operator volume adjustment setting. There is to reduce.

  In order to achieve the above object, a wireless communication terminal according to the present invention is configured so that a terminal of a group to which a caller wireless communication terminal belongs in a communication start operation shifts to a communication channel and enters a communication state. In a digital MCA wireless communication system in which a speech is transmitted after a transmission operation and voice is transmitted to a receiver, the reception volume on the reception side is switched using the transmission operation on the transmission side as a trigger.

  According to the present invention, by pressing the transmission start button on the sender side, an operator having a wireless communication terminal can perform the normal reception volume and the transmission volume without carrying out the adjustment operation of the reception volume. Can be switched. In addition, since it is set so that it is set to the reception volume setting when carrying normally after the call ends, it is not carried around at a position away from the face while keeping the volume low, so the received sound is low and the transmission information of the sender is Missed hearing is reduced.

  Hereinafter, an embodiment of a wireless communication terminal according to the present invention will be described in detail with reference to the accompanying drawings.

  FIG. 1 is an internal block diagram of a wireless communication terminal. The audio signal received by the transmission / reception communication antenna 10 is amplified to a predetermined level by the low noise amplifier in the receiving unit 12 via the duplexer 11, and the amplified received audio signal is subjected to signal processing and demodulated by the demodulating unit 13. . The volume of the demodulated received audio signal is set by the volume adjusting unit 14 according to the setting information from the control unit 17, and the audio is output from the speaker 15.

  On the other hand, during transmission, when the transmission start button 16 is pressed, the control unit 17 amplifies the sound from the microphone 18 by the transmission amplifier 19 as a transmission state, modulates it by the modulation unit 20, and modulates the duplexer 11 from the transmission unit 21. And transmitted via the communication antenna 10.

  Although depending on the structure, the microphone 18 and the speaker 15 are close to each other, and when they are normally carried, they are carried away from the face, so that the sound from the speakers is in a state where the volume is set high. When the next call is made, the transmission start button 16 is pressed to acquire the transmission right at the same time as bringing the wireless communication terminal close to the face in order to transmit from the microphone 18. By this pressing, the control unit 17 sets the wireless communication terminal in a transmission state, and controls the volume adjustment unit 14 to set the volume of the speaker 15 to the volume (small volume) during a call. When a predetermined time has elapsed after releasing the transmission start button 16, the control unit 17 determines that the operator has finished the call and returned the wireless communication terminal to a position away from the face, and controls the volume adjustment unit 14. Then, return the volume to the volume setting that was set to normal. Note that the reception volume for normal carrying and the reception volume for transmission are set in the control unit 17 in advance. In addition, after a predetermined time has elapsed after releasing the transmission start button, the control unit 17 sets the reception volume to the normal reception volume.

  As described above, according to the present invention, the reception volume is switched at the time of a call with the pressing of the transmission start button 16 as a trigger, so that the normal reception volume and transmission can be performed without the operator adjusting the reception volume. The volume of the incoming call can be switched, and the normal reception volume is set after the call ends, so there is no need to carry the phone away from the face while keeping the volume low. Missed listening is reduced.

The internal block diagram of a radio | wireless communication terminal.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 10 ... Communication antenna for transmission / reception, 11 ... Duplexer, 12 ... Reception part, 13 ... Demodulation part, 14 ... Volume adjustment part, 15 ... Speaker, 16 ... Transmission start button, 17 ... Control part, 18 ... Microphone, 19 ... Transmission Talk amplifier, 20 ... modulator, 21 ... transmitter.

Claims (1)

A wireless communication terminal having at least a transmission unit, a reception unit, a control unit, and a speaker, the wireless communication terminal including a transmission start button for transmitting during wireless communication;
A volume adjustment unit that adjusts the reception volume of wireless communication received by the reception unit, and the volume adjustment unit switches the reception volume to a predetermined volume when receiving a predetermined signal from the control unit; Wireless communication terminal.

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