JP2002320006A - Folded mobile phone - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a folded mobile phone that saves the power consumption so as to prevent a waiting time and a speech time from being decreased. SOLUTION: The mobile phone provided with a rear LCD whose display face is placed on a rear side of an enclosure and a main LCD whose display face is placed on a mated face of the enclosure is characterized by that the mobile phone is provided with a detection means that transmits a prescribed signal when detecting a prescribed shape and with a control section that automatically controls switching of power supplied to the rear LCD and the main LCD by receiving the signal sent from the detection means.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a foldable portable telephone having a rear LCD, and more particularly, to a foldable portable telephone that suppresses power consumption.

[0002]

2. Description of the Related Art A foldable portable telephone equipped with a rear LCD is provided with an LCD as a display unit on the rear side of the housing, so that information can be easily checked without opening the housing. Operability has been improved.

[0003]

However, on the other hand, L
There will be two CDs on the meeting side and on the back side,
When power is supplied to both LCDs, there is a disadvantage that power consumption increases, and standby time and call time are shortened. Also, the power of the rear LCD was always on.

[0004] It is an object of the present invention to provide a backside LC capable of reducing power consumption and shortening standby time and talk time.
D is to provide a foldable mobile phone.

[0005]

According to a first aspect of the present invention, there is provided a rear LCD having a display surface disposed on a rear side of a housing.
And a main LCD whose display surface is arranged on the meeting side of the housing
Detecting means for transmitting a predetermined signal by detecting a predetermined state, and receiving the signal transmitted from the detecting means and supplying the signal to the rear LCD and the main LCD. And a control unit for automatically controlling the switching of the power supply.

[0006] In the foldable portable telephone, it is preferable that the detecting means is an open / close detecting means for detecting an open / closed state of the housing.

In the above-mentioned foldable portable telephone, the control unit controls not to supply power to the rear LCD and the main LCD by receiving a signal from the opening / closing detecting means for detecting a closed state. In addition, it is preferable that control is performed so that power is supplied to the main LCD without supplying power to the rear LCD by receiving a signal from the open / close detection unit that detects an open state.

In the above-mentioned foldable portable telephone, the control unit receives only a signal from the opening / closing detecting means for detecting a closed state, so that the rear LCD is provided.
And controlling not to supply power to the main LCD, and supplying power to the main LCD without supplying power to the rear LCD by receiving only a signal from the opening / closing detection means detecting an open state. It is preferable to control so that

Further, in the above-mentioned foldable portable telephone, a switch button is provided at a predetermined position other than the meeting surface in the housing of the foldable portable telephone, and the detecting means detects press of the switch button. It is preferred that

[0010] In the folding mobile phone, the control unit receives a signal from the pressing detection unit that has detected the pressing, and supplies power to the rear LCD for a predetermined time set by a user of the folding mobile phone. It is preferable to control so as to supply.

[0011] Further, in the foldable portable telephone, it is preferable that the detecting means is a communication detecting means for detecting a communication state including an incoming call and a call.

In the folding portable telephone, the control unit may further include a signal from the communication detection unit that detects that communication is being performed, a signal from the open / close detection unit that has detected a closed state, Receiving the power, the power is supplied to the rear LCD and the power is not supplied to the main LCD, and the signal from the communication detecting means detecting that the communication is being performed and the open state are detected. It is preferable to control so as to supply power to the main LCD without supplying power to the rear LCD by receiving a signal from the opening / closing detection means.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A rear LCD (3 in FIG. 3) having a display surface disposed on the rear side of a housing, and a main LCD (8 in FIG. 3) having a display surface disposed on a meeting surface side of the housing. Detecting means (15, 1 in FIG. 3) for transmitting a certain signal by detecting a predetermined state.
6, 17) and a control unit (FIG. 3) for automatically controlling the switching of the power supplied to the rear LCD and the main LCD by receiving the signal transmitted from the detecting means (FIG. 3).
9), the power of the display unit can be turned off when display is not required, and power consumption can be suppressed.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiment 1 of the present invention will be described with reference to the drawings.
FIG. 1 is a plan view schematically showing a rear surface of a first housing in a closed state of the foldable mobile phone according to the first embodiment of the present invention. FIG. 2 is a longitudinal sectional view schematically illustrating a configuration of the foldable mobile phone according to the first embodiment of the present invention in a closed state. This foldable mobile phone 1
Has a first housing 20 and a second housing 21.

The first housing 20 is rotatably connected to the second housing 21 via the hinge 6, and has an ANT 2 on its upper end surface for transmitting and receiving radio signals to and from a radio base station. In the vicinity of the center of the rear surface, there is a display window of the rear LCD 3, and a microphone 5 for outputting audio information is mounted near the upper part of the front side inside the housing. Is mounted, and a rear LCD 3 for displaying simple information such as a clock is mounted near the center on the rear side inside the housing. The rear LCD 3 is arranged so that it can be seen from the outside even when it is closed.

The second housing 21 is rotatably connected to the first housing 20 via the hinge portion 6, and has a rear surface LC on its side end surface.
The side button 14 serving as the power switch of D3 protrudes,
A key operation unit 7 serving as an information input unit is mounted near the center on the front side, and a receiver 4 serving as an audio information input unit is mounted near a lower portion inside the housing.

Next, the configuration of the power supply control circuit of the rear LCD and the main LCD of the foldable portable telephone according to the first embodiment will be described with reference to the drawings. FIG. 3 is a block diagram schematically illustrating a configuration of a power supply control circuit of the rear LCD and the main LCD in the foldable mobile phone according to the first embodiment of the present invention.

The power supply circuit section 10 supplies power from a battery to the rear LCD 3 and the main LCD 8 at a constant voltage.
Power is supplied to the rear LCD 3 from the power supply circuit unit 10 via the SW 12. Power is supplied to the main LCD 8 from the power supply circuit unit 10 via the SW 13. The control circuit unit 9 automatically controls ON / OFF switching of the SW 12 and the SW 13 by receiving the constant state signal 11 from the detection unit. As a result, the power of the rear LCD 3 and the power of the main LCD 8 are switch-controlled. The detection signal 11 is a signal which is transmitted to the control circuit when a certain state of the mobile phone is detected by the detecting means. The detection means includes an open / close detection means 15 for detecting the open / closed state of the housing, a press detection means 16 for detecting press of a side button, and an incoming / call detection means 17 for detecting an incoming signal or a call signal.

Next, the operation of the foldable portable telephone according to the first embodiment will be described with reference to the drawings. FIG. 4 is a flowchart schematically illustrating an operation of the foldable mobile phone according to the first embodiment of the present invention. Figure 1 shows the configuration
See ~ 3.

First, the main power supply of the foldable portable telephone is turned on (step A1). Next, when the main power is turned on, the power of each of the rear LCD 3 and the main LCD 8 is turned on, and a predetermined display appears on each of the rear LCD 3 and the main LCD 8 (step A2).

Next, whether or not the housing is closed is checked by the open / close detecting means 15 (step A3).

If it is confirmed by the open / close detecting means 15 that the housing is closed ("YES" in step A3),
A closing detection signal is sent from the opening / closing detecting means 15 to the control circuit 9, and the control circuit 9 controls SW12 and SW13 so as to turn off the power of both the rear LCD 3 and the main LCD 8;
The display of the CD is turned off (step A6).

On the other hand, if the open / close detection means 15 does not detect that the housing is closed, that is, if the housing is open ("NO" in step A3), the open detection signal is sent from the open / close detection means 15 to the control circuit. To the control circuit unit 9
Controls the SW 12 so that only the rear LCD 3 is turned off, turns off the display on the rear LCD 3, and keeps the main LCD 8 turned on (step A4). Then, whether or not the housing is closed is checked by the open / close detecting means 15 (step A5). If the opening / closing detection unit 15 does not detect that the housing is closed, that is, if the housing is open (“NO” in step A5), an opening detection signal is sent from the opening / closing detection unit 15 to the control circuit unit 9, The control circuit unit 9 maintains the state of step A4. On the other hand, open / close detection means 1
5 detects that the housing is closed (“YES” in step A5), the closing detection signal
5 to the control circuit unit 9, and the control circuit unit 9
SW1 so that both D3 and main LCD 8 are turned off.
2. Control the SW 13 to turn off the display on both LCDs (step A6).

Next, whether or not the side button 14 has been pressed is checked by the press detection means 16 (step A).
7). If the side button has not been pressed ("NO" in step A7), the process returns to step A3 and repeats the flow of the step. On the other hand, if the side button is pressed (“YES” in step A7), a press detection signal is sent from the press detection unit 16 to the control circuit unit 9, and the control circuit unit 9 turns on the power of only the rear LCD 3. The control circuit 9 controls the SW 12 to turn off the rear LCD 3 after a specified time (for example, 20 seconds: the user can freely set the time). Control, turn off the power of the rear LCD 3,
The display on the rear LCD 3 is turned off (step A8). Thereafter, the flow returns to A3, and the flow described above is repeated.

Next, a second embodiment of the present invention will be described with reference to the drawings. FIG. 5 is a flowchart schematically illustrating the operation of the foldable mobile phone according to the second embodiment of the present invention.

In the second embodiment, in addition to the control of the LCD power by the detection signal 11 from the open / close detection means 15 and the press detection means 16 in the first embodiment, the power of the LCD is also controlled by the detection of the incoming / call signal. Is what you do.

The operations in steps A1 to A8 in the second embodiment are the same as the operations in steps A1 to A8 in the first embodiment. In the second embodiment, steps A7 and A8
Is different from the first embodiment in that the operation is not returned to step A3 as in the first embodiment but is shifted to the operation of step A9 after the operation is completed. Refer to the first embodiment for the operations of steps A1 to A8.

Referring to FIG. 5, after confirming that the side button is not depressed in step A7, or after the display on the rear LCD is terminated and disappears in step A8, it is confirmed whether or not a call is being received or talking. This is performed by the incoming / call detecting means 17 (step A9).

If the incoming / call detecting means 17 cannot detect the incoming / call signal ("NO" in step A9), the process returns to step A3 and repeats the flow described above.

On the other hand, when the incoming / call detecting means 17 detects the incoming / call signal ("YES" in step A9).
Indicates that an incoming / call detecting signal is sent from the incoming / call detecting means 17 to the control circuit 9, and the control circuit 9 controls the SW 12 so that only the rear LCD 3 is turned on.
3 is displayed (step A10).

After displaying the rear LCD 3 in step A10, the open / close detecting means 1 checks whether or not the housing has been opened.
5 (step A11).

If the opening / closing detection means 15 does not detect that the housing is open, that is, if the housing is closed ("NO" in step A11), it is determined whether or not a call / call is in progress. This is performed by the detecting means 17 (step A1).
2). When the incoming / call signal is detected by the incoming / call detecting means 17 ("YES" in step A12), the process returns to step A10. Note that the operations in steps A10 to A12 are repeated as long as a call is received or a call is being made in the closed state. On the other hand, if the incoming / call signal is not detected by the incoming / call detecting means 17 ("NO" in step A12), the process returns to step A3.

On the other hand, if the open / close detection means 15 detects that the housing is open (“YE” in step A11).
S "), an open detection signal is sent from the open / close detection means 15 to the control circuit 9, and the control circuit 9 controls the SW 12 so as to turn off the power of the rear LCD 3, turns off the display of the rear LCD 3,
At the same time, switch SW13 so that the main LCD 8 is turned on.
To display the main LCD 8 (step A1).
3).

Next, it is determined whether or not an incoming call or call is in progress.
This is performed by the call detecting means 17 (step A14). Incoming call
If the incoming call signal is detected by the call detecting means 17 ("YES" in step A14), the process returns to step A13.

On the other hand, if the incoming / call signal is not detected by the incoming / call detecting means 17 ("N" in step A14).
O ") determines whether the housing is closed or not by opening / closing detecting means 1
5 (step A15).

When the open / close detecting means 15 does not detect that the housing is closed, that is, when it is detected that the housing is open ("NO" in step A15).
Returns to step A13. On the other hand, when the opening / closing detection unit 15 detects that the housing is closed (“YES” in step A15), the process returns to step A3.

According to the above flow, the control circuit unit 9 recognizes the open / close detection, the side button press detection, and the incoming / outgoing call detection as the state signal input 11, and turns on SW12 and SW13.
When it is turned off, the rear LCD 3 and main LC
ON / OFF of D8 is controlled.

[0038]

According to the present invention, the function of automatically turning on / off the power of the LCD as needed can reduce the power consumption and prevent the standby time and the talk time from being shortened. can do.

[Brief description of the drawings]

FIG. 1 is a plan view schematically showing a rear surface of a first housing in a closed state of a foldable mobile phone according to a first embodiment of the present invention.

FIG. 2 is a longitudinal sectional view schematically illustrating a configuration of the foldable mobile phone according to the first embodiment of the present invention in a closed state.

FIG. 3 is a block diagram schematically illustrating a configuration of a power supply control circuit of a rear LCD and a main LCD in the foldable mobile phone according to the first embodiment of the present invention.

FIG. 4 is a flowchart schematically illustrating an operation of the foldable mobile phone according to the first embodiment of the present invention.

FIG. 5 is a flowchart schematically showing an operation of the foldable mobile phone according to the second embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Foldable mobile phone 2 ANT 3 Rear LCD 4 Receiver 5 Microphone 6 Hinge part 7 Key operation part 8 Main LCD 9 Control circuit part 10 Power supply circuit part 11 State signal input 12, 13 SW 14 Side button 15 Open / close detection means 16 Press detection Means 17 Incoming / call detecting means 20 First housing 21 Second housing

 ──────────────────────────────────────────────────続 き Continued on the front page F-term (reference)

Claims (8)

[Claims] 1. A back LC in which a display surface is arranged on a back side of a housing.
D and a main LCD whose display surface is arranged on the meeting side of the housing
And a detecting means for transmitting a predetermined signal by detecting a predetermined state; and receiving the signal transmitted from the detecting means to supply the signal to the rear LCD and the main LCD. A folding mobile phone, comprising: a control unit that automatically controls switching of a power supply. 2. A foldable portable telephone according to claim 1, wherein said detecting means is an open / close detecting means for detecting an open / close state of the housing. 3. The control unit controls the power supply to the rear LCD and the main LCD not to be supplied by receiving a signal from the open / close detection means for detecting the closed state, and detects the open state. 3. A foldable mobile phone according to claim 2, wherein a signal is supplied from said opening / closing detecting means to supply power to said main LCD without supplying power to said rear LCD. . 4. The back LCD and the main LC by receiving only a signal from the open / close detecting means for detecting a closed state.
D so as not to supply power to the main LCD without supplying power to the rear LCD by receiving only a signal from the open / close detection means that detects an open state. Control,
The foldable mobile phone according to claim 2 or 3, wherein: 5. A switch button is provided at a predetermined position other than the meeting surface in the housing of the foldable portable telephone, and the detecting means is a pressing detecting means for detecting pressing of the switch button. The foldable mobile phone according to claim 1. 6. The control unit receives a signal from the press detection unit that detects the press, and thereby controls the back LC for a predetermined time set by a user of the foldable mobile phone.
6. The foldable mobile phone according to claim 5, wherein power is supplied to D. 7. The folding portable telephone according to claim 1, wherein said detecting means is a communication detecting means for detecting a communication state including an incoming call and a call. 8. The rear LCD according to claim 1, wherein the control unit receives a signal from the communication detection unit detecting that communication is being performed and a signal from the open / close detection unit detecting a closed state. And a signal from the communication detecting means for detecting that communication is being performed, and a signal from the open / close detecting means for detecting an open state. 8. The foldable portable telephone according to claim 7, wherein upon receiving the power, the main LCD is controlled so as not to supply power to the rear LCD.