JPH11154899A - Communication terminal device - Google Patents

Abstract

(57) [Summary] [Problem] To conserve power in a standby state and inform the standby state. SOLUTION: An LCD 11 for displaying information, a communication unit for performing communication, an operation key unit 13 for instructing the communication unit to wait for an incoming call, and a response to a standby instruction input from the operation key unit 13 An LCD power control unit 101d for controlling power supply to the LCD 11; and a standby state notifying unit 14 for notifying that the power supply to the LCD 11 is stopped by the LCD power control unit 101d.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] The present invention relates to, for example, PHS
(Personal Handyphone System) The present invention relates to a communication terminal device such as a telephone.

[0002]

2. Description of the Related Art A conventional PHS telephone 30 has a shape as shown in FIG. 10, and an LCD (liquid crystal display) 31 for displaying a telephone number and the like is provided on an upper surface thereof. Further, a communication switch 32 is provided, the communication switch 32 is operated when responding to an incoming call, and the communication switch 32 is also used when making a call.
Is operated. Further, a power switch for turning on and off the power of the PHS telephone 30 is provided separately from the communication switch 32 or is also used as the communication switch 32. When the power switch is also used as the communication switch 32, for example, the communication switch 32 is depressed for a predetermined time or more to realize power-off or power-on.

[0003] By the way, in order to suppress battery consumption, the PHS telephone 30 has a radio unit or the like in a standby state where no telephone call is made and no key operation is performed even when the power is on. Intermittent operation, LCD
At 31, only the pictogram display of the received electric field strength, the remaining battery level, and the like is performed.

FIG. 11 shows an example of a pictogram displayed on the LCD 31. Reference numeral 33 indicates a pictograph display of the received electric field strength, and reference numeral 34 indicates a pictograph display such as the remaining battery level. Conventionally, to perform such a pictogram display, the LCD 31 is actually divided into a pictogram display area 31A and a dot matrix area 31B. In the pictogram display area 31A, a display object related to the pictogram display is composed of several segments, and display / non-display is controlled depending on whether or not a voltage is applied to the segment. On the other hand, in the dot matrix area 31B, characters and the like are displayed as 36 dots × 36 dots per character. In the related art, only the pictograph display area 31A is driven in the standby state, and the bias voltage is not applied to the dot matrix area 31B to reduce power consumption.

[0005] However, with the start of the data communication service using the PHS, the size of the display screen is increasing. When a large-sized LCD is adopted, there is no LCD for displaying a pictogram of a size corresponding to the large-sized LCD, and the entire surface must be constituted by a single LCD of a dot matrix system.

In the case of such an LCD, a portion related to display is configured as shown in FIG. That is, a RAM 62 having a data area corresponding to each dot of the LCD 61 is prepared in order to display on the LCD 61 of the dot matrix system, and the CPU 60 stores the data of the object related to the pictogram display in the RAM by dot mapping.
Write to 62. The data written in the RAM 62 is D
ASIC (Application Specific Integ) by MAC (Direct Memory Access Controller) 65
The data is transferred to an LCD display controller 63 including a rated circuit (64), and the LCD display controller 63 performs dot matrix display on the LCD 61 in accordance with the transferred data.

[0007]

Therefore, even when only the pictogram is displayed in the standby state, the CPU 60
Must store dot matrix data for the entire screen of the LCD 61 in the RAM 62, and the accompanying display control is also performed based on the dot matrix data for the entire screen of the LCD 61. There is a problem that power consumption cannot be reduced as compared with the time of display.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems of the communication terminal device, and has as its object to reduce power consumption in the standby state and to use the standby state. It is an object of the present invention to provide a communication terminal device that can inform a user.

[0009]

According to a first aspect of the present invention, there is provided a communication terminal device comprising: a display unit for displaying information; a communication unit for performing communication; an input unit for inputting information; A power control means for controlling power supply to the display means in accordance with a state of waiting for an incoming call by the communication means and a state of waiting for input from the input means; and informing that power supply by the power control means is stopped. And a standby state notifying means. This allows
The power supply to the display means is stopped according to the standby state, and no display is displayed on the display means. However, it is notified that the power supply is stopped according to the standby state, and the user is in the standby state. Can be accurately known.

The communication terminal device according to a second aspect of the present invention includes a switch for instructing power on / off,
The standby state notifying means is provided by operating the switch.
It is characterized by indicating that power supply is stopped according to a standby state. This indicates that the power supply to the display means is stopped in the standby state by the operation position of the switch.

According to a third aspect of the present invention, in the communication terminal device, the standby state notifying means is constituted by a mark provided immediately below the movable portion of the switch. This indicates that the power supply to the display means has been stopped in the standby state based on whether or not the mark has appeared.

[0012] In the communication terminal apparatus according to the fourth aspect of the present invention, the standby state notifying means includes an LED for notifying that the power supply is stopped according to the standby state, and the LE.
And a drive control unit for performing drive control of D. This indicates that the power supply to the display means is stopped in the standby state by turning on and off the LED.

According to a fifth aspect of the present invention, there is provided a communication terminal device, comprising: a display unit for displaying information; a communication unit for performing communication; an input unit for inputting information; Power supply control means for stopping power supply to the display means for a first time and then supplying power for a second time in accordance with a state of standby and input from the input means; and displaying the display means by the power supply control means. And intermittent display control means for displaying predetermined items intermittently when power is supplied to the computer. Thereby, in the standby state, the predetermined item is displayed when the power supply to the display means is intermittently performed, and the user can know that the standby state is established.

According to a sixth aspect of the present invention, there is provided the communication terminal device, further comprising time setting means for setting the first and second times. As a result, during the intermittent display in the standby state, it is possible to arbitrarily set the time during which the LCD is turned on and the time when the LCD is turned off.

According to a seventh aspect of the present invention, in the communication terminal apparatus, the intermittent display control means displays at least one of a received electric field strength and a remaining battery level. As a result, during the intermittent display in the standby state,
At least one of the received electric field strength and the remaining battery level can be known.

[0016]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A communication terminal according to an embodiment of the present invention will be described below with reference to the accompanying drawings. here,
A PHS telephone (personal handy horn) will be described as a communication terminal device. In each drawing, the same components are denoted by the same reference numerals, and redundant description will be omitted. FIG. 1 shows a configuration of a PHS telephone according to the first embodiment. The PHS telephone has an antenna 1, a radio unit 2, a modem unit 3, a TDMA (Time Division Multiple A
ccess) unit 4, voice / data switching unit 5, voice codec 6, microphone 7a, receiver 7b, ECC (Error
Checking and Correcting) section 8, user memory section 9,
A control unit 10 including a microcomputer or the like,
LCD 11 and LCD constituting display means for displaying information
A power supply unit 12, an operation key unit 13, and a standby state notification unit 14 are provided.

The radio section 2 includes a receiving section 202 for down-converting a received signal to a baseband band, a transmitting section 203 for up-converting a baseband transmission signal to a radio band, and any one of the above-mentioned receiving section 202 and transmitting section 203. A switch 201 for connecting the antenna to the antenna 1 is provided. The modem unit 3 includes a demodulation unit 301 for demodulating a signal and a modulation unit 302 for modulating a signal. The TDMA unit 4 includes a TDMA decoding unit 401 for restoring a signal from a frame and a TD
An MA encoding unit 402 is provided.

The control unit 10 includes, for example, a wireless control unit 101a realized by software, an information control unit 101
b, LCD display controller 101c, LCD power controller 10
1d is provided. The operation key section 13 constitutes an input means. The operation key section 13 includes a slide switch 131a for instructing ON / OFF of the power supply of the apparatus, various function keys 131b, and a ten-key 131c for dial input and the like. Is provided.

The PHS telephone configured as above is
At the time of an incoming call, a response can be made by operating a response key of the function keys 131b. Also, function key 1
An outgoing call can be made by operating a send key (same as the answer key) together with a key for instructing voice communication or data transmission in 31b.

In the above, when there is a voice call instruction,
The wireless control unit 101a of the control unit 10 sets a wireless communication path, and the control unit 10 controls the voice / data switching unit 5 to perform TD.
The MA unit 4 and the audio codec unit 6 are connected.

When a voice is inputted from the microphone 7a, the voice is transmitted to the
Encoding by ADPCM (Adaptive Differential Pulse Code Modulation) of kbps is performed.
It is sent to the DMA unit 4. The encoded data is TDM
A frame is formed by the A
Π / 4 shift QPSK (Quadrature Phase
Shift Keying) modulation, up-converted to, for example, a 1.9 GHz band in the transmission unit 203, and wirelessly transmitted from the antenna 1 via the switch 201.

On the other hand, when a radio signal is received by the antenna 1, the signal is transmitted via the switch 201 to the receiving section 202.
And down-converted to a baseband signal. This signal is sent to the demodulation section 301, where it is subjected to π / 4 shift QPSK demodulation, and further the frame is deframed by the TDMA decoding section 401. Sent to In the audio codec section 6, ADPCM decoding is performed, the audio signal is restored, and audio is generated from the receiver 7b.

In response to the above, if there is a data communication instruction,
The control unit 10 controls the voice / data switching unit 5 to perform TDMA
The unit 4 and the ECC unit 8 are connected. Then, in the case of data transmission, the information control unit 101b of the control unit 10 fetches the data stored in the user memory unit 9 and performs ECC
To the unit 8. The EEC unit 8 converts this data into parallel / serial data and sends the data to the TDMA unit 4 via the voice / data switching unit 5 as bearer data of, for example, 32 Kbps. The processes after the TDMA unit 4 are the same as those in the case of voice transmission, and thus the description is omitted.

On the other hand, the received data is received by the antenna 1 in the same manner as when a voice signal is received,
The modem unit 3 and the TDMA unit 4 perform the same processing as described above to be deframed.
It is sent to the C section 8. The ECC unit 8 performs processing such as error correction and, if necessary, retransmission request on the received data, and performs serial / parallel conversion. This is received by the information control unit 101b and stored in the user memory unit 9. In the above, the part related to communication constitutes a communication means.

With respect to the display on the LCD 11 of the PHS telephone, the LCD display control unit 101c of the control unit 10
The control is performed by the CD power supply control unit 101d. That is, LC
The D display control unit 101c displays patterns (dots) corresponding to characters, figures, and the like to be displayed when displaying pictograms of received electric field strength, remaining battery level, and the like, displaying operation menus, and displaying communication data such as e-mails. Matrix type LCD
Then, a bit pattern such as a character or a figure to be displayed is created and given to the LCD 11 for display.

The LCD power control unit 101 d
The LCD power supply unit 12 that supplies a bias voltage to the LCD 11 is turned on / off, and the supply of the bias voltage to the LCD 11 is controlled. Note that the LCD power supply unit 12 always supplies a logic voltage for the built-in driver of the LCD 11 irrespective of the control of the LCD power supply control unit 101d.

In the present embodiment, a slide switch 131a for instructing the power of the apparatus to be turned on / off is provided on the operation key section 13 as an input means. As shown in FIG. 2, the slide position (operation position) of the slide switch 131a indicates that power supply to the LCD 11 is stopped in accordance with the standby state.
In the case 50 of the S telephone, the slide switch 131
Circular marks 41 and 42 are provided immediately below the movable portion 40 a by, for example, red silk printing. The marks 41 and 42 constitute the standby state notifying means 14.

FIG. 3 shows the slide switch 131a.
Is shown in detail. Slide switch 131a
At the position of the housing 50 corresponding to the stop position of the movable section 40, a switch state mark composed of a combination of “ON”, “LOCK”, “OFF” and a circle and a straight line is attached by, for example, silk printing. I have. Slide switch 131
A hemispherical projection 43 indicated by a black circle is formed at the center of the movable portion 40a, and when the movable portion 40 stops, a position corresponding to the mark such as “ON”, “LOCK”, “OFF”, etc. The hemispherical projection 43 is located at the bottom.

When the power is turned off, FIG.
The movable section 40 is moved to the rightmost side as shown in FIG. At this time, the marks 41 and 42 are covered with the movable portion 40 and cannot be seen. When the power is turned on, the movable unit 40 is moved to the leftmost side as shown in FIG. At this time, the marks 41 and 42 can be seen together without being covered by the movable portion 40. When the movable section 40 is located at the center, the PHS telephone is in a locked state in which no key operation is accepted. In this locked state, only the mark 41 is visible, and the mark 42 is not visible because it is covered by the movable portion 40.

When the power is turned on by moving the movable section 40 of the slide switch 131a, the wireless control section 101a of the control section 10 receives the switch and sets a standby state (a wireless communication between the base station and the base station). Either the public mode connected via a line, the home mode connected to a home base unit via a wireless line and functioning as a handset, or a transceiver mode that allows direct wireless communication with other PHS telephones without going through a base station (Standby state). In this standby state, the LCD display control unit 101c of the control unit 10 performs an operation based on the flowchart shown in FIG.
01d performs an operation based on the flowchart shown in FIG. 5, and this will be described.

When the movable section 40 of the slide switch 131a is moved and the power is turned on, the LCD display control section 101c waits for at least one of pictograms of the received electric field strength and the remaining battery level. The inside display pattern is created and sent to the LCD 11, and a pictogram is displayed (S1). At this time, the LCD power control unit 101d is monitoring the elapse of the predetermined time T1 (for example, 30 seconds) (S
11), since the LCD power supply unit 12 is turned on, LC
A bias voltage is applied to D11, and the pictogram is appropriately displayed.

When a predetermined time T1 has elapsed since the transition to the standby mode, the LCD power control section 101d controls the LCD power supply section 12 to be turned off (S12), and the bias voltage is not applied to the LCD 11. On the other hand, the LCD display control unit 101c detects that the predetermined time T1 has elapsed since the transition to the standby mode (S2), and detects that the LCD power supply unit 12d has been turned off by the LCD power supply control unit 101d. Then (S3), the operation is on standby (S4). In this state, nothing is displayed on the LCD 11, but the marks 41 and 42 of the slide switch 131a are displayed.
Appears (FIG. 3 (c)), so that it can be confirmed that the apparatus is on standby. Then, the LCD display control unit 101, the LCD
Both the power control unit 101d detects an incoming call via the wireless unit 2 and detects the presence or absence of an input from the operation key unit 13 (S5, S13).

Therefore, when there is an incoming call or key operation, L
The CD display control unit 101c restores the operation state, fetches the received electric field strength from the wireless unit 2, updates the pictogram display contents by detecting the remaining battery level, etc. (S6), and operates the operation menu as necessary. The contents or the contents of data communication such as e-mail are updated (S7), and these pictogram display patterns and patterns of operation menus and the like when necessary are created and transmitted to the LCD 11 (S8).

On the other hand, the LCD power control unit 101d recovers to the operating state when there is an incoming call or key operation, and detects that the display contents on the LCD 11 have been updated by the LCD display control unit 101c (S6, S7). (S14),
After the update is performed, the LCD power supply unit 12 is turned on to
A pictograph display, an operation menu display, and the like are enabled in D11 (S15). Thereafter, the LCD display control unit 101c
Is the LC in the operating state corresponding to the incoming call or the progress of the key operation.
The process shifts to the operation of creating a D pattern and sending it to the LCD 11, and continues the processing (S9). Further, the LCD power supply control unit 101d shifts to an operation corresponding to the incoming call or the progress of the key operation, and continues the ON / OFF processing for the LCD power supply unit 12 (S16).

In the above-described embodiment, the marks 41 and 42 are silk-printed, and the standby state is notified based on whether the marks 41 and 42 are visible or hidden. For example, the center of the movable part 40 of the slide switch 131a is notified. An LED is provided in place of the hemispherical projection 43 provided on the LCD, and a drive control unit for controlling the drive of the LED is provided. The LED is turned on during standby (S4), and power is supplied to the LCD 11 in response to a standby instruction. You may be comprised so that it may notify that it was stopped.

Next, FIG. 6 shows the PH according to the second embodiment.
1 shows an S telephone. The operation key section 13 of the PHS telephone is provided with a power key 131d for turning on and off the power. The power key 131d does not need to be a slide switch, and may be constituted by a non-lock switch.

The control unit 10 includes an LCD power control unit 101 d ′ and a timer unit 101 which are different from those of the first embodiment.
e, an intermittent display control unit 101f is provided. The timer unit 101e keeps time even during standby and a first timer that counts up after a lapse of time T2, and a first timer that counts up when the first timer times out and counts up after a lapse of time T3. It has two timers. The times T2 and T3 can be arbitrarily set by the user using the operation keys 13. LCD power control unit 101d '
Controls the LCD power supply unit 12 to be turned on when it detects that the first timer has timed out, activates the second timer, and turns off the LCD power supply unit 12 when it has detected that the second timer has timed out. Control. The intermittent display control unit 101f indicates that the first timer has expired,
During the period in which the D feeding unit 12 is on-controlled, the LCD display control unit 101c is restored to update the content related to the pictogram display such as the received electric field strength, and the display pattern of the pictogram display is created and transmitted to the LCD11. And a pictogram is displayed.

In the PHS telephone according to the second embodiment configured as described above, the LCD display control means 101c
Performs processing based on the flowchart shown in FIG.
The LCD power supply control unit 101d 'performs processing based on the flowchart shown in FIG. 8, which will be described.

When the power key 131d is operated and the power is turned on, the LCD display control means 101c operates as shown in FIG.
The processing of steps S1 to S9 is performed as described in (1) (see FIG. 7). At this time, a first timer (intermittent display timer) which times up at time T2 is started, and then waits (S4). Further, detection of an incoming call via the radio unit 2 and input from the operation key unit 13 When the presence / absence detection is performed (S5), if there is no incoming call and there is no input from the operation key unit 13 and the process branches to NO, it is detected whether or not the intermittent display timer has expired (time-up) (S21). Continue waiting until it comes up.

When the intermittent display timer expires, LC
The D display control unit 101c restores the operation state, fetches the received electric field strength from the wireless unit 2, updates the pictogram display contents by detecting the remaining battery level, and the like (S22), and operates the operation menu as necessary. The contents or the contents of data communication such as e-mail are updated (S23), and a pattern of these pictogram display and a pattern of an operation menu if necessary are created and transmitted to the LCD 11 (S24).

On the other hand, when the power key 131d is operated and the power is turned on, the LCD power control unit 101d 'performs step S1 in the same manner as described with reference to FIG.
1 to S16 (see FIG. 8).
When the D power supply unit 12 is turned off (S12) and an incoming call is detected via the wireless unit 2 and the presence or absence of an input from the operation key unit 13 is detected (S13), there is no incoming call. When there is no input from the key unit 13 and the process branches to NO, FIG.
As shown in (2), it is detected whether the intermittent display timer has expired (time-up) (S31), and the OFF control of the LCD power supply unit 12 is continued until the time is up.

Then, the LCD power control unit 101d '
When the intermittent display timer detects expiration, it returns to the operating state,
It is detected that the display contents on the LCD 11 have been updated by the LCD display control unit 101c (S22, S23) (S32), and after the update, the LCD power supply unit 11 is turned on and the time is up at time T3. The second timer and the intermittent display timer are activated to enable LCD display (S33), and the time-up of the second timer is detected (S34). When the time is up, step S
Then, the process returns to step S12, in which the LCD power supply unit 12 is turned off (S12), and the subsequent operations are continued.

The LCD display control unit 101c creates a pictogram display pattern and a pattern such as an operation menu if necessary, sends it to the LCD 11 (S24), and the LCD power supply control unit 101d 'turns on the LCD power supply unit 11. (S
33) By doing so, a pictogram is displayed. And L
The CD display control unit 101c detects that the picto display during the time T3 has been completed and the off control has been performed on the LCD power supply unit 12 (S25), and the off control has been performed on the LCD power supply unit 12. In some cases, the process returns to the standby state of step S4 to continue the processing.

As a result of the above processing, as shown in FIG. 9, when the power key 131d is operated at time t0 to turn on the power, the operation state changes from the normal operation state to the standby state after T1 from this time. Then, the display on the LCD 11 is turned off. On the other hand, the intermittent display timer (first timer) is activated at time t0, the display of the LCD 11 is turned on after T2 time, and the pictograph display is continued for T3 time until the second timer times out. The display is turned off. Hereinafter, the same processing is continued during standby.

In the PHS telephone according to the present embodiment, since the pictograph is intermittently displayed on the LCD 11 during standby, the power consumption is lower than when the LCD 11 is always on and the pictograph is displayed continuously. Can be reduced, and it is clear to the user that the user is on standby, and the usability is improved.

[0046]

As described above, according to the communication terminal apparatus of the first aspect of the present invention, there is provided the standby state notifying means for notifying that the power supply by the power control means is stopped. Therefore, the power supply to the display means is stopped according to the standby state, and the display on the display means is not performed. However, the user is notified that the power supply to the display means is stopped according to the standby state, and the user is in a standby state. This has the effect of being able to accurately know that the user is in the receiving state.

As described above, according to the communication terminal apparatus of the second aspect of the present invention, a switch for instructing power ON / OFF is provided, and the standby state notifying means is provided with a standby state by operating the switch. Indicates that the power supply to the display means has been stopped, so that it is possible to accurately know that the power supply to the display means has been stopped in the standby state by the operation position of the switch.

As described above, according to the communication terminal device of the third aspect of the present invention, since the standby state notifying means is constituted by the mark provided immediately below the movable portion of the switch, the mark appears. Whether the power supply to the display means is stopped in the standby state can be clearly known from whether or not the power supply is being performed.

As described above, according to the communication terminal device of the fourth aspect of the present invention, the standby state notifying unit notifies that the power supply to the display unit is stopped according to the standby state. Since the LED and the drive control unit for controlling the drive of the LED are provided, it is possible to know that the power supply to the display means is stopped in the standby state by turning on and off the LED.

As described above, according to the communication terminal device of the fifth aspect of the present invention, in the standby state, power is intermittently supplied to the display means, and at that time, predetermined items are displayed. The intermittent display allows the user to know that the apparatus is in the standby state while suppressing power consumption, which is convenient.

As described above, according to the communication terminal device of the sixth aspect of the present invention, the time for the intermittent display can be set arbitrarily and is convenient.

As described above, according to the communication terminal device of the seventh aspect of the present invention, at the time of the intermittent display in the standby state, it is possible to know at least one of the received electric field strength and the remaining battery level. It is convenient.

[Brief description of the drawings]

FIG. 1 is a diagram showing a configuration of a PHS telephone according to a first embodiment of the present invention.

FIG. 2 is a perspective view of the PHS telephone according to the first embodiment of the present invention.

FIG. 3 is an exemplary view showing a main part of the PHS telephone according to the first embodiment of the present invention.

FIG. 4 is a flowchart for explaining the operation of the PHS telephone according to the first embodiment of the present invention.

FIG. 5 is a flowchart for explaining the operation of the PHS telephone according to the first embodiment of the present invention.

FIG. 6 is a diagram showing a configuration of a PHS telephone according to a second embodiment of the present invention.

FIG. 7 is a flowchart for explaining the operation of the PHS telephone according to the second embodiment of the present invention.

FIG. 8 is a flowchart for explaining the operation of the PHS telephone according to the second embodiment of the present invention.

FIG. 9 is a view for explaining an intermittent display operation of the LCD by the PHS telephone according to the second embodiment of the present invention.

FIG. 10 is a perspective view of a PHS telephone according to a conventional example.

FIG. 11 is a diagram showing a configuration of an LCD of a PHS telephone according to a conventional example.

FIG. 12 is an enlarged LCD in a PHS telephone.
The figure which shows the component part which performs the display process with respect to.

[Explanation of symbols]

Reference Signs List 1 antenna 2 radio section, 3 modem section 4 TDMA section 5 voice / data switching section 6 voice codec 7a microphone 7b receiver 8 ECC section 9 user memory section 10 control section 11 LCD 12 LCD power supply section 13 operation key section 14 notification of standby state Means 101a Wireless control unit 101b Information control unit 101c LCD
Display control unit 101d, 101d 'LCD power supply unit 101e Timer unit 101f Intermittent display control unit 131a Slide switch

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁶ Identification code FI H04M 1/00 H04M 1/00 N (72) Inventor Hirohisa Tokunaga 3-1-1 Asahigaoka, Hino-shi, Tokyo Toshiba Hino Corporation in the factory

Claims (7)

[Claims] A display means for displaying information; a communication means for performing communication; an input means for inputting information; and a state of waiting for an incoming call by the communication means and waiting for an input from the input means. A communication terminal device comprising: a power control unit that controls power supply to the display unit in response thereto; and a standby state notification unit that reports that power supply by the power control unit is stopped. 2. A switch for instructing turning on / off of a power supply, and a standby state notifying means is provided according to an operation position of the switch.
The communication terminal device according to claim 1, wherein the communication terminal device indicates that power supply is stopped according to a standby state. 3. The communication terminal device according to claim 2, wherein the standby state notifying means includes a mark provided immediately below a movable portion of the switch. 4. A standby state notifying means comprising: an LED for notifying that power supply is stopped according to a standby state; and a drive control unit for controlling the driving of the LED. The communication terminal device according to claim 2. 5. A display means for displaying information, a communication means for performing communication, an input means for inputting information, and a state of waiting for an incoming call by the communication means and waiting for an input from the input means. Power supply control means for stopping power supply to the display means for a first time and then supplying power for a second time; and intermittently interrupting a predetermined item when power supply to the display means is performed by the power supply control means. A communication terminal device comprising: an intermittent display control means for displaying an image intermittently. 6. The communication terminal device according to claim 5, further comprising time setting means for setting the first and second times. 7. The communication terminal device according to claim 5, wherein the intermittent display control means displays at least one of a received electric field strength and a remaining battery level.