JPH11215247A - Portable telephone set - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the consumption of a battery by detecting image data received by an image data buffer to produce an image data detection signal, detecting the connecting state of an earphone jack to produce an earphone detection signal and then switching on the power supply of an image display part only when both image data and earphone detection signals are active. SOLUTION: A control part 101 detects a signal sent from an earphone jack monitoring part 108 to determine whether an earphone 107 is connected to an earphone jack 106. If the earphone 107 is connected to the jack 106, an image data monitoring part 109 judges an image data receiving state that is outputted in accordance with the state of an image data buffer 110. When the part 101 receives the image data with the earphone 107 connected to the jack 106, the part 101 automatically switches on the power supply of an image display part 105. Then the part 101 automatically switches off the power supply of the part 105 when a set time of a timer part 113 has passed after reception of the image data is over.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a portable telephone, and more particularly, to a portable telephone having an image display unit.

[0002]

2. Description of the Related Art PDC (Personal Digital Celer), which is known as a standard system of digital mobile phones in Japan in the past.
Digital image data can be transmitted by using a digital data transmission function in a PHS (Personal Handyphone System) known as a method of a portable telephone or a portable telephone.

For example, in the PDC system, the transmission rate of digital data is 9.6 KBPS, and in the PHS, it is 32 KBPS, so that the transmission rate is 32 KBP.
Although it is not possible to transmit a moving image based on the MPEG1 standard of S, it is possible to transmit still image digital data.

[0004] In addition, the IMT-2000 (International standard), a global standard for next-generation (third generation) digital mobile communication.
nal Mobile Telecommunication 2000), W-CDMA (Wideband Code Division Multiple Ac)
cess), digital data communication at a transfer rate of 2.048 MBPS is possible. Therefore, for example, MPEG1 or MP with a transmission rate of several MBPS
It is possible to transmit EG2 type moving image data.

In the next-generation PHS system, 25 to 30
It is planned that digital data communication with MBPS will be possible.
It becomes possible to transmit moving image data such as the PEG2 system.

Accordingly, a wireless mobile communication terminal (wireless mobile station) having a function of receiving still image data or moving image data and displaying an image such as a still image or moving image based on the data has been emerging. .

[0007] When communication is performed by displaying image data (moving image or the like) on a mobile phone, the image display unit is considered to be provided in the mobile phone body. At this time, the microphone and the speaker mounted on the main body for the user to see the image display unit are naturally several tens of centimeters away from the mouth and the ear of the user. If the sensitivity of the microphone is increased and the volume of the speaker is increased, communication while looking at the image display unit is possible, but communication in a dense place or the like is very difficult. In such a situation, for example, it is conceivable that an earphone equipped with a microphone function using bone conduction is connected to transmit and receive voice, and a telephone call is made while looking at the image display section of the mobile phone body.

[0008]

In such a situation, in order to display an image on the image display section of the main body, the image display section must be constantly turned on or turned on when it is desired to display the image. The former consumes more battery, and the latter has poor operability.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a portable telephone which turns on the power of the image display unit only when a predetermined display condition of the image display unit is satisfied, and turns off the power supply at other times.

[0010]

According to the present invention, there is provided a portable telephone, comprising: a modulating / demodulating means for modulating / demodulating data; an image data buffer for storing received image data; and the image data buffer having the received image data. Image data monitoring means for detecting and generating an image data detection signal;
An earphone for outputting the voice of the call partner and inputting the voice of the user, an earphone jack for inserting the earphone, an earphone jack monitoring means for detecting a connection state of the earphone jack and generating an earphone detection signal, An image display unit that displays an image based on image data, and a power control unit that turns on the image display unit only when the image data detection signal and the earphone detection signal are active. It is characterized by the following.

In the portable telephone according to the present invention, in the portable telephone, the image data monitoring means includes a timer, and means for setting the image data detection signal and the timer when receiving the image data. Means for resetting the image data detection signal when the timer times out.

Further, in the portable telephone according to the present invention, in the above portable telephone, a microphone, a speaker, and a sound input / output unit are switched to the earphone when the power of the image display unit is turned on. And a means for switching the sound input / output means to the microphone and the speaker when the sound is not input.

Further, a portable telephone according to the present invention comprises a portable telephone provided with an image display unit for displaying an image based on received image data, wherein one or more of the portable telephones monitor a state of the portable telephone and generate a state detection signal. Status monitoring means,
Means for controlling a power supply of the image display unit based on the state detection signal.

Further, the portable telephone according to the present invention is characterized in that, in the portable telephone described above, one of the state monitoring means is image data monitoring means for monitoring whether image data is in an image data buffer. I do.

Further, the portable telephone according to the present invention is characterized in that, in the above portable telephone, one of the state monitoring means is an earphone jack monitoring means for detecting whether or not an earphone is connected.

Further, the portable telephone according to the present invention is characterized in that, in the above portable telephone, one of the state monitoring means is a sound monitoring means for monitoring a sound detection state of a microphone of a user's portable telephone body. And

Further, the portable telephone according to the present invention is characterized in that in the above portable telephone, the state monitoring means is a resistance value monitoring means for monitoring a change in an external resistance value by a user.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
For example, the mobile phone is compatible with the W-CDMA system, can perform image data communication, and further includes an image display unit.

FIG. 1 is a block diagram of a portable telephone having an image display unit for displaying an image according to the first embodiment of the present invention.

Referring to FIG. 1, a portable telephone according to the present embodiment has an image data buffer 1 for storing image data.
10, an image data monitoring unit 109 that monitors the accumulation of image data in the image data buffer 110, an image display unit 105 that displays image data, a microphone 102 that converts audio into audio signals, and a received audio signal. A speaker 103 for converting to voice, an earphone 107 equipped with, for example, a microphone function using bone conduction for making a call while watching an image displayed on the image display unit 105, an earphone jack 106 for connecting the earphone 107 and the mobile phone 100, An earphone jack monitoring unit 108 for monitoring the connection state of the earphone jack 106, an operation unit 104 for setting functions of the mobile phone 100, a control unit 101 for controlling the entire mobile phone 100, modulation of transmission data and demodulation of reception data. Modulation / demodulation unit 11, antenna 112, timer unit 113
Is provided.

The function setting using the operation unit 104 includes setting of a function of automatically turning on and off the power of the image display unit 105 according to the present embodiment.

An image based on the image data is displayed on the image display unit 105.
The condition that is displayed in is that the image data is stored in the image data buffer 110 and the earphone is connected to the earphone jack 106. When the above condition is satisfied, an image based on the image data is displayed on the image display unit 105.

In a call in which no image is displayed, the control unit 101
Controls the microphone 102 and the speaker 103.

On the other hand, in a call for displaying an image, the image data monitoring unit 109 or the control unit 108 detects that image data has been sent from the other party. The earphone jack monitoring unit 108 detects that the user has connected the earphone 107 to the earphone jack 106 in order to receive sound while viewing the image. When the control unit 101 receives both the detection information reports (image data reception and earphone connection), it displays an image on the image display unit 105.

The control method of the image display unit according to the present embodiment is as follows.
It is possible to display image data on the image display unit only when necessary without performing a switch operation on the image display unit.
In addition, this image display unit control method, for example, when talking while looking at the image display unit of the mobile phone during a call, if you output a loud sound from the speaker will be annoying around,
It is assumed that you will have a conversation through earphones.

Next, the operation of the mobile phone according to the present embodiment will be described in detail.

The operation of the control unit 101 is divided into an operation based on a main program, an operation based on an image data reception interrupt, and an operation based on a timeout of the timer unit 113.

FIG. 2 shows a control unit 1 according to the main program.
It is a flowchart of operation | movement of 01. Referring to FIG. 2, in step S201, it is determined whether the automatic power-on / off function of the image display unit 105 has been set. If it has been set, the process proceeds to step S202. If it has not been set, the process proceeds to step S208. In step S202, a signal input from earphone jack monitoring section 108 is detected to determine whether or not an earphone is connected. If the earphone is connected, step S2
The process proceeds to step S04, and if not, the process proceeds to step S203.
In step S203, the audio signal path is
And the speaker 103 side. In step S204, the audio signal path is set to the earphone 107 side.
In step S205 subsequent to step S204, the image data reception state is determined. The image data reception state is held by a flag or the like which the control unit 101 has internally. This is operated by the operation of the image data reception interrupt and the operation of the control unit 101 due to the timeout of the timer unit 113. If it is determined in step S205 that it is in the receiving state, the process proceeds to step S206. If it is determined that it is in the non-receiving state, it is determined in step S207.
Proceed to. In step S206, the power of the display unit is turned on. In step S207, the power of the display unit is turned off. After step S206 or step S207, the process proceeds to step S208, where other processing is performed, and the process returns to step S201.

FIG. 3 is a flowchart of the operation of the control unit 101 in response to an image data reception interrupt. Referring to FIG. 3, in step S301, which is executed first after an image data reception interrupt occurs, image data is taken into the image data buffer 110. In the next step S302, the image data receiving state is changed to the receiving state. Next step S
At 303, it is determined whether or not the power of the image display unit 105 is ON. In step S303, the image display unit 105
If it is determined that the power is ON, the process proceeds to step S304, and if it is determined that the power is OFF, the operation by the interrupt is terminated. Step S304
Then, the timer unit 113 is initialized. That is, for example, 3
Set to a predetermined timer value such as 0 seconds.

Note that the image data reception interrupt does not occur only at the start of image data reception, but continuously occurs at the time of image data reception. Therefore, while the image data is being received, the timer unit 113 counts down to a certain value, but is re-initialized before the count value becomes zero.

FIG. 4 is a flowchart of the operation of the control unit 101 by a timeout interrupt. Referring to FIG.
In step S401, which is executed after an interrupt due to a timeout of the timer unit 113 occurs, the image data reception state is set to the non-reception state.

By the operation of the three control units 101 described above, the power of the image display unit 105 is automatically turned on when the earphone is connected and image data is received,
If the function of automatically turning on / off the power of the image display unit 105 has been set, the timer unit 1 waits for the reception of the image data to end.
When the set time of 13 elapses, the image display unit 105 is automatically set.
Is turned off.

It should be noted that instead of the control unit 101 having the image data reception state flag, the image data monitoring unit 109 has the image data receiving unit flag.
Depending on the state of 0, this may be set to a receiving state or a non-receiving state. In this case, the change of the image data reception state in step S302 and step S401 by the control unit 101 can be omitted. Then, step S205
Then, the image data reception state flag output from the image data monitoring unit 109 is used.

In the above embodiment, the control unit 1
01 is based on the reception state and the earphone connection state, the audio path is switched and the power of the image display unit 105 is turned on and off. However, the determination criterion of the control unit 101 is limited to these two states. is not. For example, the sound including the nose breath is detected by the microphone 102 to detect whether or not the mobile phone 100 is near the mouth of the user. If the mobile phone 100 is in the receiving state and the voice is not detected, The power of the image display unit 105 may be turned on even when the earphone is not connected. Alternatively, the power of the image display unit 105 may be turned off in the voice detection state even in the receiving state and the earphone connection state. In addition, when the user uses the mobile phone 1
In order to detect whether or not 00 is placed on the ear, conductor parts are set on the grip part and the speaker part 103 of the mobile phone 100, and a resistance detector is provided between the two conductor parts. A determiner for determining the resistance value to be detected is provided, and the determination result of this determiner can be used instead of the detection result of the microphone 102 described above.

[0035]

As described above, according to the present invention, the power supply of the image display unit can be controlled only by monitoring the reception of image data and the connection of the earphone. Therefore, the user does not need to switch the power of the image display unit. Also, since the power of the image display unit is turned on only when there is display data, it is possible to save battery power. This is because the control unit performs image data reception monitoring and earphone connection monitoring, and if the reception state and the earphone connection state are on, the power of the image display unit is turned on.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a configuration of a mobile phone according to an embodiment of the present invention.

FIG. 2 is a flowchart of an operation of a control unit according to a main program according to the embodiment of the present invention.

FIG. 3 is a flowchart illustrating an operation of a control unit by an image data reception interrupt according to the embodiment of the present invention.

FIG. 4 is a flowchart of an operation of a control unit in response to a timeout interrupt caused by a timer unit according to an embodiment of the present invention;

[Explanation of symbols]

 REFERENCE SIGNS LIST 100 Mobile phone 101 Control unit 102 Microphone 103 Speaker 104 Operation unit 105 Image display unit 106 Earphone jack 107 Earphone 108 Earphone jack monitoring unit 109 Image data monitoring unit 110 Image data buffer 111 Modulation / demodulation unit 112 Antenna 113 Timer unit

Claims (8)

[Claims] 1. A modulation / demodulation means for modulating and demodulating data, an image data buffer for storing received image data, and an image for detecting that the received image data is present in the image data buffer and generating an image data detection signal. Data monitoring means, an earphone for outputting the voice of the other party to input the voice of the user, an earphone jack for inserting the earphone, and an earphone jack for detecting a connection state of the earphone jack and generating an earphone detection signal Monitoring means; an image display unit for displaying an image based on the image data; and power supply control for turning on the image display unit only when the image data detection signal and the earphone detection signal are active. A mobile phone comprising: means. 2. The mobile phone according to claim 1, wherein
The image data monitoring unit includes a timer, a unit that sets the image data detection signal and the timer when receiving the image data, and a unit that resets the image data detection signal when the timer times out. A mobile phone characterized by the following. 3. The mobile phone according to claim 1, further comprising: a microphone, a speaker, and a sound input / output unit that is switched to the earphone when the power of the image display unit is turned on. Means for occasionally switching sound input / output means to the microphone and the speaker. 4. A mobile phone provided with an image display unit for displaying an image based on received image data, wherein one or more status monitoring means for monitoring a status of the mobile phone and generating a status detection signal; Means for controlling a power supply of the image display unit based on a state detection signal. 5. The mobile phone according to claim 4, wherein
One of the state monitoring units is an image data monitoring unit that monitors whether image data is in an image data buffer. 6. The mobile phone according to claim 4, wherein one of the state monitoring units is an earphone jack monitoring unit that detects whether an earphone is connected. 7. The mobile phone according to claim 4, wherein one of the status monitoring units is a voice monitoring unit that monitors a voice detection status of a microphone of a user's mobile phone main body. A mobile phone, comprising: 8. The portable telephone according to claim 4, wherein said state monitoring means is a resistance value monitoring means for monitoring a change in an external resistance value by a user. Mobile phone.