JP2012095164A - Portable terminal apparatus, and method of controlling portable terminal apparatus - Google Patents

Abstract

A mobile terminal device capable of suppressing power consumption and a method for controlling the mobile terminal device are provided.
When a burst signal is input from a first control unit having a first timer that generates a timer interrupt signal at an interval slightly different from a predetermined interval, the cellular phone device 1 The second control unit 70 operates as if a timer interrupt signal and a burst signal were input, and sleeps when the operation ends. The second control unit 70 operates with a timer interrupt signal generated at a time slightly different from a predetermined interval by the first timer 61 when in the standby state, and a burst signal when in the non-standby state. Is input, it operates assuming that a timer interrupt signal and a burst signal have been input.
[Selection] Figure 2

Description

  The present invention relates to a mobile terminal device and a control method for the mobile terminal device.

  Conventionally, in portable terminal devices, it has been proposed to reduce the operating rate of the microprocessor and suppress power consumption.

  For example, Patent Document 1 proposes a method of suppressing power consumption using TDMA (Time Division Multiple Access). Further, as a method for suppressing power consumption, there is a method in which a timer is interrupted by a timer with low power consumption and time is measured.

JP-A-6-152514

  However, if the method of measuring time based on timer interruption by a timer with low power consumption is applied to a portable terminal device using TDMA, burst reception using burst signals received at predetermined intervals from an external device during communication such as a call Interruption and timer interruption with a timer with low power consumption are alternately performed, and power consumption may increase.

  An object of this invention is to provide the portable terminal device which can suppress power consumption, and the control method of a portable terminal device.

  A mobile terminal device according to the present invention is a mobile terminal device that communicates with an external device, a communication unit that receives a signal from the external device, and a burst that is received from the external device at a predetermined interval by the communication unit. When the burst signal is input from the first control unit that outputs a signal and the first control unit, the timer operates as if the timer interrupt signal and the burst signal are input, and sleeps when the operation ends. A second control unit.

  In addition, the mobile terminal device includes a first timer that generates a timer interrupt signal at an interval slightly different from a predetermined interval, and the second control unit is configured such that the communication unit performs communication related to standby processing in the external device. Communication in which the communication unit operates differently from the communication related to the standby processing, and is operated by a timer interrupt signal generated at an interval slightly different from the predetermined interval by the first timer. When the burst signal is input in a non-standby state for performing the operation with the external device, it is preferable that the timer interrupt signal and the burst signal be input and operate.

  In the portable terminal device, the communication unit includes an antenna that transmits and receives a high-frequency signal to and from the external device, and a high-frequency signal processing unit that processes the high-frequency signal transmitted and received by the antenna. Preferably, when the burst signal to be processed by the high-frequency signal processing unit is input, the 2 control unit operates by assuming that the timer interrupt signal and the burst signal are input.

  The portable terminal device includes an operation unit that receives a call start operation, and the second control unit receives the burst signal when the call start operation is received by the operation unit. The timer interrupt signal used for the operation is preferably switched from the timer interrupt signal generated by the first timer to the burst signal.

  In the portable terminal device, the operation unit accepts a call termination operation, and the second control unit accepts the call termination operation by the operation unit and no longer receives the burst signal. Accordingly, it is preferable that the timer interrupt signal used for the operation is switched from the burst signal to a timer interrupt signal generated by the first timer.

  Further, in the portable terminal device, the second control unit has a second timer that has a higher power consumption than the first timer and generates a timer interrupt signal at the predetermined interval. When communication with the external device is disabled and the application to be controlled requires timekeeping accuracy, it is preferable that the timer interrupt signal is generated at the predetermined interval by the second timer.

  In the portable terminal device, it is preferable that the second control unit includes a counter that counts the number of times the timer interrupt signal is detected, and a time counting unit that counts the value counted by the counter.

  The portable terminal device preferably includes a notification unit that notifies the application that the predetermined time has elapsed when the time measured by the time measuring unit is a predetermined time.

  A control method of a mobile terminal device according to the present invention is a control method of a mobile terminal device that communicates with an external device and includes a first control unit and a second control unit, and receives a signal from the external device. A step of outputting a burst signal to the second control unit when receiving from the external device at a predetermined interval in the step of performing the reception, and the second control unit, And a step of operating as if a timer interrupt signal and the burst signal were input when the burst signal was input from the first control unit, and sleeping when the operation ended.

  According to the present invention, power consumption can be suppressed.

1 is an external perspective view of a mobile phone device according to an embodiment. It is a functional block diagram which shows the function of the mobile telephone apparatus which concerns on this embodiment. It is a flowchart which shows the flow of a process until a timer interruption is performed in the mobile telephone apparatus which concerns on this embodiment. It is a flowchart which shows the flow of a process until it notifies an application that the predetermined time passed since the 2nd control part detected the timer interruption in the mobile telephone apparatus which concerns on this embodiment.

  Embodiments of the present invention will be described below. FIG. 1 is an external perspective view of a mobile phone device 1 as a mobile terminal device according to the present embodiment. The mobile phone device 1 according to the present embodiment uses a time division multiple access (TDMA) method and a time division duplex (TDD) method as a multiple access technology to external devices such as base stations. It communicates with.

  1 shows a form of a so-called foldable mobile phone device, the form of the mobile phone device according to the present invention is not particularly limited to this. For example, a rotary type (turn type) in which one casing is slid in one direction from a state where both casings are overlapped, an operation unit and a display unit are arranged in one casing, It may be a type that does not have (straight type).

The mobile phone device 1 includes an operation unit side body 2 and a display unit side body 3.
The operation unit side body unit 2 includes an operation unit 11 and a microphone 12 to which a voice uttered by a user of the mobile phone device 1 is input on the surface unit 10. The operation unit 11 includes a function setting operation key 13 for operating various functions such as various settings, a telephone function, and an e-mail function, an input operation key 14 for inputting a telephone number, characters, and the like, The operation key 15 includes a determination operation key 15 for performing determination and scrolling in various operations such as a call start operation and a call end operation in the telephone function.
In addition, the display unit side body unit 3 includes an LCD (Liquid Crystal Display) display unit 21 for displaying various types of information on the surface unit 20 and a speaker 22 that outputs the voice of the other party of the call. Has been.

  Further, the upper end of the operation unit side body 2 and the lower end of the display unit side body 3 are connected via a hinge mechanism 4. In addition, the cellular phone device 1 relatively rotates the operation unit side body 2 and the display unit side body 3 connected via the hinge mechanism 4, thereby The display unit side body 3 can be opened (opened) with each other, or the operation unit side 2 and the display unit 3 can be folded (folded).

FIG. 2 is a functional block diagram showing functions of the mobile phone device 1 according to the present embodiment.
As shown in FIG. 2, the mobile phone device 1 includes an operation unit 11, a microphone 12, a communication unit 30, an LCD control unit 41, an audio processing unit 42, a storage unit 50, and a first control unit 60. The operation unit side body unit 2 includes the second control unit 70. In addition, the mobile phone device 1 includes an LCD display unit 21, a speaker 22, and an LCD driver 23 in the display unit side body unit 3.

  The communication unit 30 transmits and receives signals to and from an external device such as a base station. The communication unit 30 includes a main antenna 31 as an antenna and an RF circuit unit 32 as a high frequency signal processing unit.

The main antenna 31 transmits / receives a high frequency signal modulated by a predetermined modulation method to / from an external device such as a base station.
The RF circuit unit 32 processes a high-frequency signal transmitted and received by the main antenna 31. Specifically, the RF circuit unit 32 demodulates the signal received by the main antenna 31 using a predetermined demodulation method, and supplies the processed signal to the first control unit 60. In addition, the RF circuit unit 32 modulates the signal supplied from the first control unit 60 with a predetermined modulation method into a high-frequency signal, and transmits the signal to an external device such as a base station via the main antenna 31.

  In the present embodiment, the communication unit 30 communicates with the base station using the TDMA-TDD system and communicates such as a call with the base station in a non-standby state at a predetermined interval (for example, 5 msec) from the base station. Receives a burst signal to be transmitted.

  The LCD control unit 41 performs predetermined image processing under the control of the second control unit 70, and outputs the processed image data to the LCD driver 23. The LCD driver 23 includes a frame memory, and stores the image data supplied from the LCD control unit 41 in the frame memory. Then, the LCD driver 23 outputs the image data stored in the frame memory to the LCD display unit 21 or the sub LCD display unit (not shown) at a predetermined timing.

  The sound processing unit 42 performs predetermined sound processing on the signal supplied from the first control unit 60 under the control of the second control unit 70, and outputs the processed signal to the speaker 22. The speaker 22 outputs the signal supplied from the sound processing unit 42 to the outside.

  The storage unit 50 includes, for example, a working memory, and is used for arithmetic processing by the second control unit 70. The storage unit 50 stores applications and various programs according to the present embodiment. Note that the storage unit 50 may also serve as a removable external memory.

  The first control unit 60 is configured by a central processing unit (CPU) or the like, and generates a timer interrupt signal at an interval different from a predetermined interval by a minute time (for example, 0.004 msec or 0.057 msec). Is provided. The first control unit 60 mainly processes a signal related to communication such as a call. That is, the first control unit 60 performs predetermined signal processing on the signal received by the main antenna 31 and processed by the RF circuit unit 32 and supplies the signal to the second control unit 70. The first control unit 60 performs predetermined signal processing on the signal supplied from the second control unit 70 and supplies the signal to the RF circuit unit 32. Detailed processing of the first control unit 60 according to the present embodiment will be described later.

  The second control unit 70 is configured by a CPU or the like having a higher operating frequency than the first control unit 60, and controls applications and the like to control the entire mobile phone device 1. The second control unit 70 has a higher power consumption than the first timer 61, and includes a second timer 71 that generates a timer interrupt signal at a predetermined interval, a counter 72, a time measuring unit 73, and a notification unit 74. Prepare. Detailed processing of the second control unit 70 according to the present embodiment will be described later.

  The cellular phone device 1 according to the present embodiment has a function of measuring time based on a timer interrupt signal, and exhibits the function when the first control unit 60 and the second control unit 70 operate. . Here, detailed configurations and operations of the first control unit 60 and the second control unit 70 will be described.

The first control unit 60 outputs burst signals received from the base station by the communication unit 30 at predetermined intervals to the second control unit 70.
That is, the first control unit 60 receives from the base station at a predetermined interval when the communication unit 30 is in a standby state in which communication different from the communication related to the standby process is performed with the base station, and the RF circuit unit 32 performs processing. The burst signal to be output is output to the second controller 70.

  When the burst signal is input from the first control unit 60, the second control unit 70 operates assuming that the timer interrupt signal and the burst signal are input, and sleeps when the operation ends. That is, when the burst signal is input from the first control unit 60, the second control unit 70 regards the timer interrupt signal and the burst signal as input, and timer interrupt processing corresponding to the timer interrupt signal; A burst reception process corresponding to the burst signal is performed, and sleep is performed in response to the completion of these processes. Here, the sleep means that the CPU usage rate is reduced to 0 without starting the CPU constituting the second control unit 70, or the CPU usage rate is reduced.

In this way, the cellular phone device 1 does not use the timer interrupt signal generated by the timer interrupt signal from the first timer 61, but instead uses the second control unit 70 for the burst signal that is also regarded as a timer interrupt signal. Can only be interrupted. Therefore, the cellular phone device 1 can perform the timer interrupt process while suppressing the power consumption by suppressing the number of activations of the CPU configuring the second control unit 70.
In addition, the cellular phone device 1 can make the timer interrupt cycle accurate based on burst signals at predetermined intervals received from the external device.

  In the standby process, the communication unit 30 receives intermittent signals from the base station at intervals longer than a predetermined interval (for example, 1.2 sec) without performing communication of data such as calls and mails with the base station. It is processing. The standby state is a communication state in which the mobile phone device 1 receives an intermittent signal from the base station by the communication unit 30.

  On the other hand, the non-standby state is a communication state in which the communication unit 30 is performing communication with the base station that is different from the communication related to the standby process. That is, the non-standby state is a communication state in which the mobile phone device 1 receives data directly related to a user such as a call or mail as a burst signal from the base station by the communication unit 30.

In addition, the first control unit 60 transmits a timer interrupt signal generated by the first timer 61 to the second control unit 70.
On the other hand, the second control unit 70 determines whether or not the mobile phone device 1 is in a standby state. The second control unit 70 performs a timer interrupt process based on the timer interrupt signal received from the first control unit 60 when the mobile phone device 1 determines that the mobile phone device 1 is in the standby state. Further, when the second control unit 70 determines that the cellular phone device 1 is in the non-standby state, when the burst signal is input from the first control unit 60, the timer interrupt signal and the burst signal are input. Operates as if it were. That is, when the second control unit 70 is in a non-standby state, the second control unit 70 performs a burst reception process and a timer interrupt process based on the burst signal, and performs the timer interrupt process even when the timer interrupt signal is input. Control not to do.

  In this way, the cellular phone device 1 performs a timer interrupt using the timer interrupt signal generated by the first timer 61 even in a standby state where no burst signal is received. be able to. That is, the cellular phone device 1 can perform timer interruption at an interval slightly different from the predetermined interval, although the accuracy is inferior to the cycle of the burst signal.

Further, when a call operation is performed by the user of the mobile phone device 1, the second control unit 70 functions as follows.
That is, the second control unit 70 receives the timer interrupt signal used for the operation (timer interrupt processing) in response to the reception of the burst signal by the function setting operation key 13 and the reception of the burst signal. By switching from a timer interrupt signal generated by one timer 61 to a burst signal that is also regarded as a timer interrupt signal, the operation is switched to a burst signal only operation.

  In this way, the cellular phone device 1 can generate a burst signal that is also regarded as a timer interrupt signal from a timer interrupt signal generated by the first timer 61 in response to a call start operation. The timer interrupt process can be performed continuously even if the communication state changes.

  In addition, the second control unit 70 receives a timer interrupt signal used for operation (timer interrupt processing) in response to a call termination operation being accepted by the function setting operation key 13 and no burst signal being received. The burst signal, which is also regarded as a timer interrupt signal, is switched to a timer interrupt signal generated by the first timer 61. The case where the burst signal is not received means the case where the burst signal is not received at a predetermined interval.

  By doing so, the mobile phone device 1 operates the call termination operation, and when the burst signal is not received, the timer interrupt signal is changed from the burst signal that is also regarded as the timer interrupt signal. The timer interrupt signal generated by the first timer 61 can be switched, and the timer interrupt process can be continuously performed even if the communication state changes.

In addition, the second control unit 70 is in a state where the mobile phone device 1 is in a state in which the communication unit 30 can communicate with the base station, and the control target application requires timekeeping accuracy. A timer interrupt process is performed based on a burst signal that is also regarded as a timer interrupt signal received from the control unit 60.
In addition, the second control unit 70 is the second control unit 1 when the mobile phone device 1 is in a state where the communication unit 30 cannot communicate with the base station, and the application to be controlled requires timekeeping accuracy. A timer 71 generates a timer interrupt signal at a predetermined interval, and performs a timer interrupt based on the timer interrupt signal.
Note that the state where communication with the base station is impossible refers to a state where intermittent signals and burst signals are not received from the base station.

  By doing so, the cellular phone device 1 is generated by the second timer 71 even if the communication unit 30 cannot communicate with the base station and the application requests timekeeping accuracy. Based on the timer interrupt signal, a timer interrupt can be performed at a predetermined period.

Further, the second control unit 70 detects and detects the burst signal transmitted from the first control unit 60, the timer interrupt signal, or the timer interrupt signal generated by the second control unit 70 by the counter 72. Count the number of times.
Subsequently, the second control unit 70 measures time based on the value counted by the counter 72 by the time measuring unit 73. Note that the time to be timed can be appropriately set in advance by an application or the like.

  In this way, the cellular phone device 1 can appropriately measure the time based on the counter 72 counted based on the timer interrupt signal.

Further, when the time measured by the time measuring unit 73 is a predetermined time, the second control unit 70 notifies the application that the predetermined time has elapsed.
In this way, the mobile phone device 1 can notify the application that a predetermined time has elapsed.

Next, the flow of processing in the second control unit 70 of the mobile phone device 1 will be described.
FIG. 3 is a flowchart showing a flow of processing until a timer interrupt is performed in the mobile phone device 1 according to the present embodiment. In describing the flowchart, it is assumed that the application is being executed by the second control unit 70.

  In step S <b> 1, the second control unit 70 determines whether or not the mobile phone device 1 can communicate with the base station or the like (communication enabled state) by the communication unit 30. The second control unit 70 moves the process to step S2 if this determination is YES, and moves the process to step S4 if this determination is NO.

  In step S2, the second control unit 70 determines whether or not the communication state of the communication unit 30 is a non-standby state. That is, the second control unit 70 determines whether or not a burst signal is received by the communication unit 30 via the first control unit 60. If this determination is YES, the second control unit 70 determines that the communication state of the communication unit 30 is a non-standby state, and moves the process to step S3. If this determination is NO, the communication state of the communication unit 30 is Assuming that it is in a standby state, the process proceeds to step S4.

  In step S <b> 3, the second control unit 70 performs a timer interrupt process based on the burst signal received by the communication unit 30 via the first control unit 60. When this process ends, the process according to this flowchart ends.

  In step S <b> 4, the second control unit 70 determines whether the application being executed by the second control unit 70 requires timekeeping accuracy. The second control unit 70 moves the process to step S5 when this determination is YES, and moves the process to step S6 when this determination is NO.

In step S5, the second control unit 70 generates a timer interrupt signal at a predetermined interval by the second timer 71, and performs a timer interrupt process based on the timer interrupt signal. When this process ends, the process according to this flowchart ends.
In step S <b> 6, the second control unit 70 performs a timer interrupt process based on a timer interrupt signal that is slightly different from the predetermined interval generated by the first timer 61.

  FIG. 4 is a flowchart showing a flow of processing from when the second control unit 70 detects a timer interruption until the application is notified that a predetermined time has elapsed in the mobile phone device 1 according to the present embodiment.

In step S11, the second control unit 70 determines whether or not a timer interrupt has been detected. The second control unit 70 moves the process to step S12 when this determination is YES, and re-executes the process of step S11 when this determination is NO.

In step S <b> 12, the second control unit 70 adds 1 to the value of the counter 72.
In step S13, the second control unit 70 (timer unit 73) determines whether or not the value of the counter 72 has reached a predetermined value. The second control unit 70 (timer unit 73) moves the process to step S14 if this determination is YES, and moves the process to step S11 if this determination is NO.

In step S14, the second control unit 70 (notification unit 74) notifies the application that a predetermined time has elapsed.
In step S15, the second control unit 70 sets the value of the counter 72 to zero.
In step S16, the second control unit 70 determines whether or not the application is terminated. If this determination is YES, the second control unit 70 ends the process according to this flowchart. If this determination is NO, the second control unit 70 proceeds to step S11.

As described above, according to the present embodiment, the mobile phone device 1 does not use the timer interrupt signal generated by the timer interrupt signal from the first timer 61, but performs the second control of the burst signal that is also regarded as the timer interrupt signal. Only the interruption to the unit 70 can be performed. Therefore, the mobile phone device 1 can suppress power consumption by suppressing the number of activations of the CPU constituting the second control unit 70.
Further, the cellular phone device 1 can make the timer interrupt cycle accurate based on a burst signal that is also regarded as a timer interrupt signal at a predetermined interval received from an external device.

  As mentioned above, although preferred embodiment was described, this invention can be implemented with a various form, without being limited to embodiment mentioned above. In addition, the effects described in the above-described embodiments are merely a list of the most preferable effects resulting from the present invention, and the effects according to the present invention are not limited to those described above.

  For example, in the present embodiment, the first control unit 60 includes the first timer 61, but the first control unit 60 may not include the first timer 61. That is, in the mobile phone device 1, the first control unit 60 and the first timer 61 may be configured as separate components so that the first timer 61 is configured by an oscillator or the like.

DESCRIPTION OF SYMBOLS 1 Mobile telephone apparatus 30 Communication part 50 Memory | storage part 60 1st control part 61 1st timer 70 2nd control part 71 2nd timer 72 Counter 73 Time measuring part 74 Notification part

Claims (9)

A mobile terminal device that communicates with an external device,
A communication unit for receiving a signal from the external device;
A first control unit that outputs burst signals received from the external device at predetermined intervals by the communication unit;
A portable terminal comprising: a second control unit that operates when the burst signal is input from the first control unit and operates as if a timer interrupt signal and the burst signal are input, and sleeps when the operation ends. apparatus. A first timer for generating a timer interrupt signal at an interval slightly different from a predetermined interval;
The second controller is
When the communication unit is in a standby state in which communication related to standby processing is performed with the external device, the first timer operates with a timer interrupt signal generated at an interval slightly different from the predetermined interval,
When the burst signal is input when the communication unit is in a non-standby state in which communication with the external device is different from the communication related to the standby process, the timer interrupt signal and the burst signal are input. The mobile terminal device according to claim 1, wherein the mobile terminal device operates. The communication unit includes an antenna that transmits and receives a high-frequency signal to and from the external device, and a high-frequency signal processing unit that processes the high-frequency signal transmitted and received by the antenna,
3. The mobile terminal device according to claim 2, wherein when the burst signal processed by the high-frequency signal processing unit is input, the second control unit operates by assuming that the timer interrupt signal and the burst signal are input. . An operation unit that accepts a call start operation is provided.
The second controller is
In response to the call start operation being accepted by the operation unit and receiving the burst signal, a timer interrupt signal used for the operation is changed from the timer interrupt signal generated by the first timer to the burst signal. The portable terminal device according to claim 2, wherein the portable terminal device is switched to a signal. The operation unit accepts a call termination operation,
The second controller is
A timer generated by the first timer from the burst signal in response to the call termination operation being accepted by the operation unit and no longer receiving the burst signal. The mobile terminal device according to claim 4, wherein the mobile terminal device is switched to an interrupt signal.   The second control unit has a second timer that consumes higher power than the first timer and generates a timer interrupt signal at the predetermined interval, and the communication unit cannot communicate with the external device. 6. The timer interrupt signal is generated at the predetermined interval by the second timer when the application to be controlled requires time-measurement accuracy. 6. Mobile terminal device. The second controller is
A counter for counting the number of times the timer interrupt signal is detected;
The portable terminal device according to claim 6, further comprising: a timer unit that counts time based on a value counted by the counter.   The portable terminal device according to claim 7, further comprising a notification unit that notifies the application that the predetermined time has elapsed when the time measured by the time measuring unit is a predetermined time. A method for controlling a mobile terminal device that communicates with an external device and includes a first control unit and a second control unit,
Receiving a signal from the external device;
The first control unit outputting a burst signal to the second control unit when received at a predetermined interval from the external device in the step of performing the reception; and
The second control unit operates when the timer interrupt signal and the burst signal are input when the burst signal is input from the first control unit, and sleeps when the operation ends. A method for controlling a mobile terminal device.

Images