JP2002305571A - Portable radio - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a portable wireless unit from which a collision noise caused between a closed cover and a main body is not transmitted to an opposite party. SOLUTION: A detection switch 12 detects a closing operation of the cover, mute processing is applied to inactivate the sound signal from microphones 3a, 3b for a prescribed time after detection so that no sound signal is transmitted from a transmission/reception section 9.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a portable wireless device such as a portable telephone, and more particularly to a portable wireless device provided with a cover for covering a main body.

[0002]

2. Description of the Related Art Since a portable telephone is carried in a bag or a pocket and carried, there is a case where an operation button collides with another object in the bag and is erroneously operated when the portable telephone is carried. In order to prevent this erroneous operation, a mobile phone provided with a cover for covering an operation surface on which operation buttons are arranged has been conventionally proposed.

FIGS. 3 and 4 show a conventional portable telephone having a different microphone mounting position.

FIG. 3 is a view showing a conventional portable telephone provided with a microphone on a cover. FIG. 3A is an external view showing a state in which the cover is closed, and FIG. 3B is a view in which the cover is opened. It is an external view which shows a state.

In the drawing, reference numeral 1 denotes a main body of a portable telephone, and 2 denotes an end which is rotatably mounted on the main body 1, covers an operation surface 5 of the main body 1 when closed, and has a predetermined angle with respect to the main body when opened. A cover 3a held in position is provided on the cover 2 by being electrically connected to an electric circuit board (not shown) mounted in the main body 1, and is a microphone for converting input sound into an audio signal. It has bidirectionality so that sound can be collected from both front and back sides of the cover 2. 4a, 4
Reference numeral b denotes sound collecting holes opened on both front and back surfaces of the cover 2 corresponding to the position of the microphone 3a for inputting sound to the microphone 3a. Reference numeral 4a denotes a cover closed as shown in FIG. A sound collecting hole provided on the front side of the cover 2 for inputting a sound sometimes, and a sound collecting hole 4b provided on the back side of the cover 2 for inputting a sound when the cover is opened as shown in FIG. It is. 5a is an operation unit composed of a plurality of operation buttons arranged in the operation surface 5, 6 is an antenna for transmitting and receiving a voice signal as a high-frequency signal, and 7 is a content such as contents input by pressing a button of the operation unit 5a. It is a display unit for displaying information. Reference numeral 8 denotes a receiver for outputting the voice of the other party.

With the above arrangement, in a conventional portable telephone provided with the microphone 3a on the cover 2, the speech sound is input to the microphone 3a from the sound collecting hole 4a when the cover 2 is closed and from the sound collecting hole 4b when the cover is opened. can do.

On the other hand, FIG. 4 is a view showing a conventional mobile phone in which a microphone is provided on the mobile phone main body, and FIG. 4A is an external view when the cover of the mobile phone is closed, and FIG.
Is an external view when the cover is opened.

In FIG. 1, reference numeral 3b denotes a microphone which is electrically connected to an electric circuit board (not shown) mounted on the main body 1 and is provided on the main body 1 and converts an input voice into a voice signal. Reference numeral 4c denotes a sound collection hole opened at one end of the main body 1 corresponding to the position of the microphone 3b for inputting sound to the microphone 3b, and when the cover 2 is closed as shown in FIG. However, the sound collecting hole 3b is configured to be exposed.

With the above configuration, the microphone 3b is added to the conventional main body.
In the portable telephone provided with the, the speech sound can be input to the microphone 3b from the exposed sound collecting hole 4c regardless of whether the cover 2 is opened or closed.

When the cover 2 is closed during a call using the above-mentioned conventional portable telephone, the main body 1 and the cover 2 collide, and the collision sound is transmitted from the sound collecting holes 4a, 4b, 4c to the microphones 3a, 3b. Will be entered.

[0011]

In a portable radio having a conventional cover, when the cover is closed during a call, a collision sound with the main body is input to a microphone through a sound collecting hole, and the collision sound is transmitted to a communication partner. There is a problem that the communication partner is uncomfortable.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and has as its object to provide a portable wireless device in which a collision sound with a main body generated when a cover is closed is not transmitted to a communication partner. I have.

[0013]

A portable wireless device according to a first aspect of the present invention has one end rotatably attached to a main body, and covers at least a part of the main body when closed.
A cover that is held at a predetermined angle with respect to the main body when opened, a microphone that is provided on the cover or the main body and converts audio into an audio signal, and converts an audio signal converted by the microphone into a high-frequency signal. A transmitting unit that transmits the data, a detecting unit that operates by detecting when the cover is closed,
A mute means for invalidating the audio signal from the microphone transmitted from the transmitting section for a predetermined time by the operation of the detecting section.

According to a second aspect of the present invention, there is provided the portable wireless device according to the first aspect, wherein the cover is urged in a closing direction until the cover is opened at a predetermined angle with respect to the main body.
When it exceeds a predetermined angle, it is biased in the opening direction,
The detection unit is configured to operate in a state where the cover is at a predetermined angle or less with respect to the main body.

[0015]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiment 1 Hereinafter, a first embodiment of the present invention will be described with reference to the drawings.

FIG. 1 is a block diagram showing an electric circuit of the portable telephone according to the first embodiment of the present invention. FIG.
FIG. 2A is a side view showing the structure of the detection switch when the cover of the mobile phone is closed according to Embodiment 1 of the present invention, and FIG. 2B is a diagram showing the appearance and the structure of the detection switch when the cover is opened. FIG.

In FIG. 1, a transmission / reception unit 9 demodulates an audio signal received as a high-frequency signal via the antenna 6 into audio, modulates the audio signal converted by the microphone 3a into a high-frequency signal, and transmits the high-frequency signal from the antenna 6. 11 is an operation unit 5
a, a control unit for controlling overall processing of the transmission / reception unit 9 and the like, 12
Is a detection switch that operates upon detecting the closing operation of the cover 2 and is made of a metal plate mounted on the electric circuit board 16. That is, when the cover 2 is opened, the detection switch 12 is pressed by the protrusion 15 provided at the end of the cover 2 to short-circuit the wiring pattern (not shown) wired on the electric circuit board 16 and turn on. It is in a state. At the time of the closing operation, the protrusion 15 releases the pressing of the detection switch 12 by the closing operation of the cover 2, switches the detection switch 12 to the off state, and transmits a detection signal to the control unit 11. Reference numeral 14 denotes a clock unit that controls the timekeeping function of the control unit 11.

Next, the operation of the mobile phone according to the first embodiment will be described with reference to the drawings.

Usually, when carrying a portable telephone, the portable telephone is carried with the cover 2 closed as shown in FIG. When a call is made with a mobile phone, first, a call is made with the cover 2 opened as shown in FIG. At this time, the detection switch 12 is pressed by the projection 15 and is in an on state. When a call is made in this state, the microphone 3a converts the voice input from the sound collection hole 4b into a voice signal, and the transmitting / receiving unit 9 converts the voice signal converted by the microphone 3a via the control unit 11 into a high-frequency signal. And transmits from the antenna 6.

Next, when the user closes the cover 2 while talking while the cover 2 is open, the protrusion 15 provided at the end of the cover 2 releases the pressing of the detection switch 12 and the detection is performed. The switch 12 is switched from the on state to the off state. Upon receiving the detection signal of the switched detection switch 12, the control unit 11 invalidates the audio signal input from the microphone 3a for a predetermined time based on the clock of the clock unit 14. Therefore, even if the cover 2 collides with the main body and the collision sound is input to the microphone 3a, the collision sound is not transmitted to the other party.

Here, the predetermined time during which the control unit invalidates and mutes the audio signal is from when the cover 2 is closed, that is, when the detection switch 12 is switched from the ON state to the OFF state and the cover 2 is completely closed. Is set as a reference, for example, 0.3 seconds based on a test result by an actual machine.

Further, since the cover 2 of the mobile phone needs to be kept in the closed state and the open state, the cover 2 is urged in the closing direction from the closed state to the opening of a predetermined angle, and is urged in the opening direction when the angle exceeds the predetermined angle. It is configured to be operated.
Therefore, the detection switch 12 may be activated when the cover 2 is closed at the predetermined angle or less. in this case,
When there is no intention to close the cover 2 and a hand or the like touches the cover 2 and the cover 2 is operated in the closing direction, unnecessary mute processing due to an erroneous operation can be prevented.

[0023]

As described above, according to the present invention,
Since the sound signal from the microphone transmitted from the transmitter is invalidated for a predetermined time after detecting when the cover is closed, the other party can hear the sound of the collision with the main unit that occurs when the cover is closed. There is no effect that can be avoided.

[Brief description of the drawings]

FIG. 1 is a block diagram showing an electric circuit of a mobile phone according to Embodiment 1 of the present invention.

FIG. 2 is a side view showing a side surface of the mobile phone according to Embodiment 1 of the present invention when the cover is opened and closed and a structure of a detection switch.

FIG. 3 is an external view showing a conventional mobile phone when a cover is opened and closed.

FIG. 4 is an external view showing a conventional mobile phone when a cover is opened and closed.

[Explanation of symbols]

1 body, 2 cover, 3a, 3b microphone, 4
a, 4b, 4c sound collecting hole, 5 operation surface, 5a operation unit, 6 antenna, 7 display unit, 8 receiver,
9 transmission / reception section, 11 control section, 12 detection switch, 14 clock section, 15 protrusion, 16 electric circuit board.

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) H04M 1/725 H04M 1/725

Claims (2)

[Claims] 1. A cover which is rotatably attached at one end to a main body, covers at least a part of the main body when closed, and is held at a predetermined angle with respect to the main body when opened. Or a microphone provided in the main body, a microphone that converts audio into an audio signal, a transmitting unit that converts the audio signal converted by the microphone into a high-frequency signal and transmits the high-frequency signal,
A detection unit that operates by detecting when the cover is closed, and a mute unit that invalidates an audio signal from the microphone transmitted from the transmission unit for a predetermined time by the operation of the detection unit. Portable radio. 2. The cover is urged in a closing direction until the cover is opened by a predetermined angle with respect to the main body, and is urged in an opening direction when the cover exceeds a predetermined angle. The portable wireless device according to claim 1, wherein the portable wireless device operates in a state where the angle is equal to or less than the predetermined angle.