WO2005025195A1

WO2005025195A1 - Mobile terminal device and control method thereof

Info

Publication number: WO2005025195A1
Application number: PCT/JP2003/010848
Authority: WO
Inventors: Hideki Matsuoka; Masahiko Sakaguchi
Original assignee: Fujitsu Limited; Ntt Docomo, Inc.
Priority date: 2003-08-27
Filing date: 2003-08-27
Publication date: 2005-03-17

Abstract

A mobile terminal device capable of transmitting and receiving data. More specifically, a mobile terminal device capable of performing operation effectively upon switching the set operations of the mobile terminal device such as opening/closing of the collapsible mechanism. A control method of the device is also disclosed. The mobile terminal device includes a processing section for executing data transmission and reception, a clock signal generation section for generating a clock signal to be supplied to the processing section, a power supply section for supplying power to the processing section, a setting section for setting an operation halt of the processing section, and a control section for stopping supply of the clock signal or power supply to the processing section if the aforementioned operation halt is set in the setting section and making the clock signal generation section supply the clock signal or supply power to the processing section if a data transmission/reception request is generated.

Description

Description Mobile terminal device and control method therefor

The present invention relates to data transmission / reception control of a portable telephone device or the like, and more particularly to a portable terminal device and a control method therefor, which can perform data transmission / reception control by using a switch operation such as an opening / closing operation of a folding mechanism of a portable telephone. Background art

Conventionally, Serial-IF (Serial-Interface) communication has been mainly used for data transfer control for connecting a portable telephone and a personal computer (PC) and transferring data between the two. In a mobile telephone device equipped with a universal serial bus (USB) function, the USB function is used to speed up data transfer.

Regarding this kind of related technology, Japanese Patent Application Laid-Open No. 2002-228684 describes a portable mail terminal device that aims to reduce current consumption. When the lid is detected and the lid is changed from the open state to the closed state, the MCPUZ display power supply control unit stops supplying power to the MCPU and the display unit, and the wireless module power supply control unit A configuration is disclosed in which the power supply to the TRX and the baseband processing unit is stopped to stop the e-mail receiving operation.

By the way, the data transfer by the USB function enabled high-speed data transfer between the mobile phone IS device and the PC, but in the mobile phone device, the RISC (Reduced Instruction Set Computer) and the Since the control clock input power is maintained for peripheral devices, USB function section (USB-Function), etc., it consumes a lot of power, consumes remarkably the battery, and needs to repeatedly charge the battery. , Inefficient use. Regarding such a problem, Japanese Patent Application Laid-Open No. 2002-229628 has disclosed the problem of reducing current consumption, but Japanese Patent Application Laid-Open No. The present invention solves the problem strongly presented by the disclosed technology and the prior art. I couldn't do that.

Therefore, regarding portable terminal devices that can perform data transmission / reception processing, the control clock for the RISC (Reduced Instruction Set Computer), peripheral devices, USB function unit (USB-Function), etc., and the consumption of various functional parts due to wasteful operation are reduced. There was a strong demand for reduction. Disclosure of the invention

The present invention relates to a portable terminal device capable of transmitting and receiving data to and from an external device, and an object of the present invention is to provide a portable terminal device and a control method therefor that address the above problems. To describe such an object in detail, the present invention relates to a portable terminal device capable of performing data transmission / reception processing. The present invention relates to a portable terminal device capable of performing data transmission / reception processing. It is an object of the present invention to provide a portable terminal device and a control method therefor.

In order to achieve the above object, a portable terminal device of the present invention is a portable terminal device capable of transmitting and receiving data to and from an external device, comprising: a clock signal generating unit for generating a clock signal; and a clock signal from the clock signal generating unit. A processing unit for receiving and transmitting the data, a setting unit for setting an operation halt in the processing unit, and a click signal generating unit when the operation halt is set in the setting unit. Then, the supply of the mouth signal to the processing unit is stopped, and when the data transmission / reception request occurs, the mouth signal is sent to the processing unit by the mouth signal generation unit. It is configured to include a control unit for supplying the power.

In such a configuration, the portable terminal device includes various communication devices such as a portable telephone device, a mobile phone, a PDA, a PHS, and a digital camera. In this portable terminal device, the clock signal generator may be either a fixed clock frequency or a variable clock frequency. The processing unit is configured by a processor such as a CPU (Control 1 Processing Unit). The setting unit is configured by, for example, a folding mechanism of the mobile phone device, and based on the opening / closing operation, sets the operation of the processing unit. In this case, the operation stop can be set. Further, the control unit, upon recognizing the setting of the operation suspension for the setting unit, triggers the clock signal generation unit to execute the cutoff for the processing unit. Although the supply of the transmission signal is stopped, the transmission signal is supplied to the processing unit by the transmission signal generating unit when the transmission / reception request of the data becomes strong.

With this configuration, the operation of the processing unit is stopped by stopping the supply of the clock signal, and the processing unit is operated in response to a data transmission / reception request. Therefore, power consumption due to the stop of operation is achieved, and data transmission / reception is achieved. When the power is required, the operation is immediately restored, so that the operation is more efficient.

Further, in order to achieve the above object, a portable terminal device of the present invention is a portable terminal device capable of transmitting and receiving data to and from an external device, comprising: a processing unit for transmitting and receiving the data; and a power supply to the processing unit. A power supply unit, a setting unit for setting an operation pause in the processing unit, and, when the operation pause is set in the setting unit, causing the power supply unit to stop the power supply to the processing unit; When a data transmission / reception request occurs, the power supply unit is provided with a control unit for supplying power to the processing unit. In such a configuration, the mobile terminal device, the processing unit, and the setting unit are as described above, and the power supply unit supplies power necessary for the operation to the processing unit. Then, the control unit triggers the power supply unit to stop transmitting power to the processing unit when the setting unit recognizes the setting of the operation suspension to the power supply unit and trigger the power supply unit to transmit the power data to the processing unit. To supply power.

With such a configuration, the operation of the processing unit is stopped by stopping the power supply, and the processing unit is operated by returning the power supply in response to a data transmission / reception request. Therefore, power consumption due to the stop of operation is achieved, and data transmission and reception are performed. When the request is made, the operation is immediately resumed, so that the operation is made more efficient.

Further, in order to achieve the above object, a portable terminal device of the present invention is a portable terminal device capable of transmitting and receiving data to and from a base station by radio and transmitting and receiving data to and from an external device. A processing unit that performs any one or both of the data transmission and reception processing; a clock signal generation unit that generates clock signals having different frequencies; and And a control unit that supplies the low-frequency signal to the processing unit.

With such a configuration, when there is no data transmission / reception, the processing load on the processing unit is light. Since the frequency of the clock signal is reduced and the low-frequency clock signal is supplied to the processing unit, power consumption is reduced, and operation efficiency is similarly reduced.

In order to achieve the above object, the control unit may be configured to supply the clock signal to the processing unit at regular time intervals. In order to achieve the above object, the control unit may be configured to cause the processing unit to perform the power supply at regular time intervals.

If the processing unit is supplied with a quick signal or power supply at a fixed time interval in this manner, an intermittent control state in which the operation is started and stopped is obtained, and the operation efficiency is improved by the power consumption due to the operation stop. Is achieved. For example, a mobile phone device is connected to a PC, and data transfer is performed by the USB function with the speeding up of data transfer. I§ ^, the setting unit described above, for example, the operation of the processing unit is stopped by a switch. The control is performed so that data such as unrestricted data and packet data cannot be transmitted and received. If there is no data processing in this state, the intermittent control state can reduce power consumption. As a result, an efficient operation state is realized.

In order to achieve the above object, the setting unit may be configured by a switch installed in a main body of the mobile terminal device. This switch can be constituted by a switch such as a switch or a key switch operated by a folding mechanism installed in a portable terminal device such as a portable telephone device. According to the switch operated by the folding mechanism, it is possible to determine that the operation is stopped based on the situation of the end to be folded, and use that as setting information.

In order to achieve the above object, a portable terminal device according to the present invention is a portable terminal device capable of transmitting and receiving data to and from an external device and transmitting and receiving data to and from an external device. And a processing unit for performing one or both of the data transmission and reception processing, and a switch that is opened and closed by a folding mechanism installed in the apparatus main body of the portable terminal device, and sets the operation of the processing unit to stop. A clock signal generating unit for generating clock signals of different frequencies; a power supply unit for supplying power to the processing unit; and a case where the operation stop is set to the switch, and the wireless transmission and reception are not performed. In this case, the power supply unit stops supplying power to the processing unit. In addition, the supply of the close signal to the processing unit is released to the close signal generation unit, and when the wireless transmission / reception is being performed, the power supply unit supplies the close signal to the processing unit. A configuration may also be provided that includes a control unit that supplies a clock signal with a low frequency to the processing unit without stopping power supply.

In order to achieve the above object, the portable terminal of the present invention may be configured such that the portable terminal device is a portable telephone device.

In order to achieve the above object, a method for controlling a portable terminal device according to the present invention is a method for controlling a portable terminal device capable of transmitting and receiving data to and from an external device, and a process for transmitting and receiving the data to and from the external device. A process of recognizing the setting of operation suspension for the processing unit that controls transmission and reception of the data; and supplying a clock signal to the processing unit to the clock signal generation unit when the operation suspension is set. Stopping and receiving a data transmission / reception request from the external device includes a process of causing the mouth signal generator to supply the mouth signal to the processing unit. In order to achieve the above object, a method for controlling a mobile terminal device according to the present invention is a method for controlling a mobile terminal device including a processing unit for transmitting and receiving data to and from an external device, the method comprising controlling the external device and the data Transmitting and receiving the data, processing for recognizing the setting of operation suspension for the processing unit for controlling transmission and reception of the data, and stopping the power supply to the processing unit when the operation suspension is set. When the required transmission / reception power is generated, the processing unit may be configured to supply power.

In order to achieve the above object, a method for controlling a portable terminal device according to the present invention is a method for controlling a portable terminal device capable of transmitting and receiving data to and from an external device while being capable of transmitting and receiving data wirelessly to and from a base station. And a process of performing one or both of the data transmission / reception process and the data transmission / reception process, and recognizing a case where the data transmission / reception is absent and a case where the wireless transmission / reception is being performed. The signal generation unit may be configured to include a process of supplying a low-frequency cook signal to the processing unit.

In any of the mobile terminal device control methods having such a configuration, the operation of the processing unit is stopped, the power supply is restored in response to a data transmission / reception request, and the processing unit is operated. As well as the ability to transmit and receive data In such a case, the operation is immediately resumed, thus improving the efficiency of the operation.

As described above, the advantages and effects of the portable terminal device and the control method of the present invention are listed as follows.

(1) The supply of the clock signal to the processing unit is stopped, and the supply of the clock signal is started based on a data transmission / reception request, so that power consumption is reduced and efficient operation can be realized. Using a battery as a power source can extend the life of the battery.

(2) The power supply to the processing unit is stopped, and the power supply is started based on a data transmission / reception request, so that power consumption can be reduced and efficient operation can be achieved. When used, the battery life can be extended.

(3) Since the clock frequency for the processing unit is changed, power consumption is reduced between low clock frequencies, and efficient operation can be realized. Similarly, when a battery is used for the power supply, The battery life can be extended.

The objects and the advantages of the present invention will become more apparent by referring to the accompanying drawings and the embodiments. Brief Description of Drawings

FIG. 1 is a block diagram showing a portable terminal device according to an embodiment of the portable terminal device and the control method of the present invention.

FIG. 2 is a perspective view showing the portable terminal device in an open state.

FIG. 3 is a side view showing the mobile terminal device in a closed state.

FIG. 4 is a block diagram showing the data transmission / reception control unit of the DBB unit.

FIG. 5 is a block diagram showing a PLL unit and a CLK controller.

FIG. 6 is a flowchart showing the processing of the USB cable connection state.

FIG. 7 is a flowchart showing processing during transmission and reception of USB data.

FIG. 8 is a state transition diagram showing the operation state of each unit when the switch is closed. FIG. 9 is a state transition diagram showing the operation state of each unit when the switch is opened. FIG. 10 is a state transition diagram showing the operation state of each unit when the USB cable is connected. FIG. 11 is a state transition diagram showing the operating state of each unit when the connection of the SB casket is released.

FIG. 12 is a state transition diagram showing the operation state of each unit at the time of a data start request. FIG. 13 is a state transition diagram showing the operation state of each unit when there is no data communication. FIG. 14 is a state transition diagram showing the operation of each unit and the communication start task at the start of data.

FIG. 15 is a perspective view showing a PDA according to another embodiment of the portable terminal device and the control method thereof according to the present invention.

FIG. 16 is a perspective view showing a mobile terminal PC according to another embodiment of the mobile terminal device and the control method thereof according to the present invention. BEST MODE FOR CARRYING OUT THE INVENTION

A mobile phone device according to an embodiment of the present invention will be described with reference to FIGS. FIG. 1 is a block diagram showing an outline of a mobile phone device and connection to external devices. FIG. 2 is a perspective view showing an open appearance of a mobile phone device having a folding mechanism. FIG. 3 is a folded mobile phone device. Fig. 4 is a block diagram showing the outline of the data transmission / reception control section in the digital baseband (DBB) section. Fig. 5 is the phase-locked loop (p LL) section and clock (CLK). It is a block diagram which shows the outline | summary of a controller.

The mobile phone device 2 includes various functional units in addition to the DBB unit 4. The DBB unit 4 is a signal processing unit that performs digital processing such as encoding of data and audio signals transmitted and received by a well, decoding of transmission signals, modulation and demodulation, and the like. In the DBB unit 4, a DBB unit CPU (Control 1 Processing Unit) 6 is a processing unit that performs control of data transmission / reception by radio or cable, control of fountain communication, etc., and is linked via a CPUBUS controller 8. A processor that reads a program from a read only memory (ROM) 10 and executes the program. The processing by the DBB unit CPU 6 includes transmission / reception control of USB communication and the like, intermittent control of repeating operation and stop at predetermined time intervals, low power control using a low-frequency clock signal, and the like. CPUBUS controller 8 has ROM10, USB input / output unit 12, Processing such as assignment of BUS selection to the interrupt controller 14, DBB section data transmission / reception control section 16, power supply section 17, timer 18, clock signal generation section 19, etc. is performed. ROM 10 stores programs and the like for executing various controls o

The USB input / output unit 12 detects connection of the USB cable connection 26 connected to the connector 24 and transmits and receives data to and from an external device through the USB cable connection 26. In this embodiment, a PC (Personal Computer) 28 which is an opposing device for transmitting and receiving data to the connector 24 via a USB cable 26 is strongly connected. The USB input / output unit 12 may have a software configuration including an input / output function program (USB—IF—Function) in addition to a hardware configuration. The connector 24 is used, for example, as a 10-pin connector according to the ARIB standard.

The interrupt controller 14 serves as a USE'R—IF control unit, for example, the open / close state of the switch 32 of the folding mechanism 30 installed in the mobile phone device 2 or the USB cable 26 connected to the connector 24. This is a functional unit that executes an interrupt process based on the connection status and the occurrence of an interrupt at a general-purpose port such as the connector 24, and the like. The functional unit includes a connection status register 34 and an open / close control status register 36. The connection status register 34 receives the status signal from the USB input / output unit 12, and stores data indicating the connection status of the USB cable 26 or the non-connection status of the USB cable 26 in the connector 24. The opening / closing control state register 36 stores data indicating whether the mobile phone device 2 is in an open state or a closed state when the switch 32 is opened or closed.

For example, as shown in FIGS. 2 and 3, the mobile phone device 2 includes a main body 38 and a display 40, and a folding mechanism 30 that opens and closes the main body 38 and the display 40. The switch 32 is opened and closed in conjunction with the folding mechanism 30. For example, as shown in FIG. 2, when the display unit 40 is opened in the direction of arrow A, the switch 32 closes to the open contact side to generate a high level output (H), and as shown in FIG. When the main body section 38 and the display section 40 are folded, the switch 32 is configured to close to the closed contact side and generate a low level output (L). In this case, a plurality of push-button switches 39 are provided on the main body 38, and a specific one or a combination of these push-button switches 39 constitutes a state switching switch replacing the switch 32. hand Is also good.

The DBB section data transmission / reception control section 16 executes control relating to data transmission / reception by radio with the outside, and as shown in FIG. 4, a DSP (Digital Signal Processor) 44, a code Z spreading modulation section 46, An amplifying unit 48, a despreading unit 50, a decoding / demodulating unit 52 and the like are provided, and these are linked by a DSP BUS 54. The DSP 44 processes digital data to be transmitted and received, and a transmission signal that has been encoded and spread modulated by the code Z spreading modulator 46 is transmitted from the power amplifier 48 via the antenna 56. The received signal of the antenna 56 is decoded and decoded by the decoding Z demodulation unit 52 through the despreading unit 50.

The power supply unit 17 is provided with 20 power save controllers (PSC: Power Save Controller), and the power save controller 20 supplies power to the functional units such as the CPU 6 and the DBB unit. The input voltage of the secondary battery 58 is applied to the PSC 20 via the regulator 60, and a predetermined voltage for each functional unit is output. The interrupt factor register 62 of the PSC 20 stores interrupt factor data.

The timer 18 receives a clock signal from the CLK controller 22 and generates time control data such as interrupt timing and intermittent control.

The clock signal generating unit 19 includes a C LK controller 22, the frequency is the same or different clock signals CLKi, CLK _2, CLK _3, the CLK ₄ occur. That is, the CLK controller 22 is a functional unit that selects and outputs clock signals CLKi, CLK ₂ , CLK ₃ , and CLK ₄ having the same or different frequencies, and the clock signal obtained by the oscillation of the crystal unit 64 is Calories are obtained through PL L 66. For example, as shown in FIG. 5, the PLL unit 66 includes a plurality of frequency dividers 681 and 682 having different division ratios (1 / R), a plurality of phase detectors (P / D: Phase Detector) 701, 702, a plurality of voltage controlled oscillators (VCOs) 721, 722 and a plurality of frequency dividers 741, 742 having different frequency division ratios (1 / N). At this age, the clock signal obtained by the common crystal oscillator 64 is frequency-divided by the frequency divider 681, and the signal having the frequency oscillated by the VC0721 is compared with the signal frequency-divided by the frequency divider 741. VC0721 is generated by the phase difference between the two. The clock signal obtained by controlling the oscillation frequency and the clock signal obtained by the common crystal oscillator 64 are divided by the frequency divider 682 and the signal having the frequency oscillated by the VC 0722 and the frequency divider The clock signal obtained by controlling the oscillation frequency of VC0722 based on the phase difference between the two signals is compared with the clock signal obtained by the crystal unit 64 separately from these clock signals. It is a configuration that outputs directly. Then, the clock signals of different frequencies obtained by the PLL unit 66 are applied to the CLK switch 76 of the CLK controller 22. The output of the CLK switches 7 6 is added to the division multiple having different ratios CLK divider timer 78 1, 782, 783, 784, the same or a different frequency of the clock signal CLK,, CLK _2, CLK 3, CLK ₄ power is taken out. In this case, the CLK switch 76 opens and closes the data value set in the CLK control register 82 through the data bus 80, and passes the clock signal to be supplied to each section. The frequency of the clock signal supplied by the value of the register 82 is changed by frequency division. Thus, by controlling the CLK supply of each part and varying the CLK frequency, the leak current is suppressed and the current is reduced.

Next, the operation of the mobile phone 5 will be described.

The mobile phone device 2 has operation modes of an intermittent control state, a low power control state, and a transmission / reception control state, and these are selectively executed when the USB cable 26 is connected and the switch 32 is opened and closed. . The intermittent control state is a standby state, in which both the DBB unit CPU 6 and the DBB unit data transmission / reception control unit 16 are controlled to the intermittent control state. This intermittent control is: The power consumption is suppressed by shutting off the supply of the clock signal and the power to each section by the save controller 20 and the CLK controller 22. In addition, a clock signal and power are supplied to the DBB unit data transmission / reception control unit 16 periodically (for example, periodically by an external timer), and the standby control is performed. This is a control to repeat the process of shutting off the power supply and suppressing the current consumption.

The low-power control state is a state in which wireless data is being transmitted and received, but user data is not transmitted and received. In the case where user data is transmitted / received, CPU processing related to user data transmission / reception processing becomes unnecessary. So, CLK con Through the controller 22, the frequency of the clock signal to the DBB unit CPU 6 and the CPU peripheral circuit is reduced, and thereby the processing per unit time is extended, and as a result, current consumption is reduced and power consumption is reduced.

In the transmission / reception control state, a control force for maintaining the state during transmission / reception of wireless data is performed.

To execute such control, when a data transmission request arrives from the PC 28 to the USB input / output unit 12, the software that manages the processing of the CPU 6 of the DBB unit interrupts the interrupt from the interrupt controller 14. Based on the above, reading of the open / close control status register 36 and reading of the connection status register 34 indicating whether or not the USB cable 26 is connected are performed, and the availability of data transfer is determined. The opening / closing control status register 36 stores data obtained by opening and closing the switch 32 that is opened and closed in conjunction with the folding mechanism 30. The connection status register 34 stores the USB cable 26 to the connector 24. The data that indicates the state of whether the data is connected or not is stored. Therefore, to determine whether the data can be transferred or not, read these open / close control status registers 36. And reading the connection status register 34.

If the switch 32 of the folding mechanism 30 is open and the USB cable 26 is connected, but the DBB CPU 6 does not perform data processing, the frequency of the clock signal is reduced (clock gear down). Transition to the intermittent control state o,

In this intermittent control state, when a data transfer request (Set-Up) is transmitted from the PC 28, an interrupt is notified to the DBB CPU 6 via the USB input / output unit 12 as an asynchronous interrupt. Based on this notification, the DBB software raises the frequency of the clock signal to the required frequency (clock gear up), and in response to this, the USB input / output unit 12 sends an ACK (Acknowledgement) as a response signal. Is output to the PC 28 side, and the data transfer from the PC 28 side receiving this is started.

The interrupt controller 14 executes the interrupt control as a USER-IF control unit based on, for example, the open / close state of the switch 32 of the folding mechanism '30, the connection state of the USB cable 26 to the connector 24, and the like. Since this is a functional part, if an interrupt occurs at a general-purpose port such as connector 24, this interrupt controller 14 Is notified to the CPU 6 of the DBB unit via the Power Save Controller (PSC) 20.

In this case, data transmission / reception control is performed by a program (USB-IF-Function), and data transfer is executed according to an instruction from the CPU 6 or the PC 28 of the DBB unit. When a data transfer request (Out request) is generated from the PC 28 while the USB cable 26 is connected, the request is notified to the interrupt controller 14, and a data transfer start request is notified to the DBB CPU 6 by an interrupt. You. The DBB unit C PU6, data transfer start request force rather be sure sa d ¹ that has come through the interrupt notification.

Until a notification response is issued from the DBB unit CPU 6, a NAK (Negative Acknowledgement) is output from the USB I / O unit 12 as a non-response notification to the PC 28, and if a response is received from the DBB unit CPU 6, U ACK is output from the SB input / output unit 12 to the PC 28 as a response notification, and the user data is transmitted from the PC 28 to the USB input / output unit 12 in response to the ACK. In addition, notification of whether the USB cable 26 is strongly connected to the connector 24 or not is sent from the interrupt controller 14 to the DBB unit CPU 6 by an interrupt.

The DBB unit data transmission / reception control unit 16 notifies the DBB unit CPU 6 of the interrupt controller 14 and the harmful IJ, and refers to the interrupt factor from the interrupt factor register 62 of the power save controller 20 to read the data. To start the transfer, the frequency of the clock signal is increased, and communication with the base station is performed using a normal mouthpiece signal used for communication.

In this configuration, when the mobile phone 2 is connected to the PC 28 with the USB cable 26 in a folded state, the PC 28 sends the DBB section CPU 6 via the USB input / output section 12. Notification from the interrupt controller 14 when the connection is detected. In the DBB section CPU6, when an interrupt is generated by the interrupt controller 14, the interrupt factor register 62 in the power save controller 20 is strongly referred to, and the reference result indicates that the USB cable 26 is connected, and the folded state is closed. After recognizing from each factor register, until the data transfer request from PC 28, 088? 1; 6-11 1 Reduced Instruction Set Computer (SC) software When the transmission and reception of data (control data and user data) are completed, the hardware and the DBB section data transmission / reception control section 16 enter a gear-down control for reducing the frequency of the clock signal.

From the USB input / output unit 12 to the DBB unit CPU 6, an interrupt notification is sent via the interrupt controller 14 in response to a data start request from the PC 28, so that the DBB unit CPU 6 and the DBB unit data transmission / reception control unit 16 It executes clock gap control to increase the clock frequency of the device, returns to the clock signal used in the communication state, and controls transmission and reception of user data.

When the communication with the base station has been completed (user data from the other end has been terminated), the DBB unit data transmission / reception control unit 16 enters the intermittent control state upon completion of the data processing, and the DBB unit 4 executes the OS operation. The sleep (Sle mark) state is notified from the (Operating System), which triggers the clock gear down control to reduce the frequency of the mouth signal and enters the low power control state.

In such a mobile phone 2, 088 units? By using the USB—IF—Function function of the input / output unit 116 and 1138, if the switch 32 is linked to the folding mechanism 30 and opened or closed, it is unrestricted. Control is performed so that data transmission and reception of data such as data and packet data cannot be performed. If there is no data processing in that state, control is performed to the intermittent control state described above.

According to such a configuration, the data transfer is performed by the USB function: ^, the data transfer control is performed by triggering the folding or opening of the mobile phone device 2 so that the data transfer control can be performed. The above-mentioned intermittent control state or low power control state can be obtained without impairing the function of high-speed data communication by the function, so that the current consumption is reduced, and as a result, the consumption of the secondary battery 58 is suppressed, and Effects such as prolonging the life of the mobile phone device 2 by charging can be obtained.

Next, a description will be given, with reference to FIG. 6, of the processing of the U S Βcape-knowledge connection state in the ϋSΒ interface control of the mobile phone device. FIG. 6 shows processing when the connector 24 and the USB cable 26 are strongly connected.

If the USB port is connected to the connector 24, the USB port is connected to the USB port. If so, the USB communication is started (step S6).

If it is not the USB data transmission / reception state, it is determined whether the switch 32 of the folding mechanism 30 is open or closed (step S2). In the open state (FIG. 2), it is determined whether or not the PC 28 has requested the USB data transmission start (step S 3). Then, the start of USB data communication is instructed (step S4), and the USB data transmission / reception state is stored (step S5), and then the USB communication is started (step S6).

If the portable telephone device 2 is in the closed state (step S2) and there is no request to start transmission of USB data from the PC 28 (step S3), the data transmission / reception control unit in the DBB unit The 16 side determines whether or not data is being transmitted and received, that is, whether or not a call is being made (step S7). If the data is not being transmitted or received (during a call), the DBB unit data transmission / reception control unit 1 Instruct the intermittent control state to 6 (step S8), and cut off the clock for power down (step S9). If it is determined in step S7 that data is being transmitted / received (during a call), the clock frequency is reduced by clock gear down processing (step S10). As a result, leakage current is suppressed, current consumption is suppressed, and power consumption is reduced.

Next, processing during transmission and reception of USB data in USB interface control will be described with reference to FIG. FIG. 7 shows processing during transmission and reception of USB data.

It is determined whether there is a USB data stop request (step S21), and if there is no USB data stop request, the process exits from this processing program. If the USB data stop request occurs, reset the USB data state storage (step S22), and then set the DBB section data transmission / reception control section 16 << transmission / reception (during communication), not Is determined (step S23). If no data transmission / reception or communication is performed, the intermittent control state is instructed to the data transmission / reception control unit 16 of the DBB unit (step S24), and the clock is shut down for power down (step S25). ). In step S23, it is determined that data is being transmitted / received (during a call): At ff ^, the clock frequency is reduced by a clock gear down process. As a result, the leakage current force is suppressed, and the power consumption is reduced. Next, the operation related to the opening and closing of the switch 32 and the above-described interrupt processing will be described with reference to FIGS. FIG. 8 is a state transition diagram showing processing of each unit triggered by the closing operation of the switch 32, and FIG. 9 is a state transition diagram showing processing of each unit triggered by the opening operation of the switch 32.

In the closing operation of the switch 32, if the switch 32 of the folding mechanism 30 is closed or the closed state is maintained (close operation), this closed state; ^ Interruption controller — opening and closing of the controller 14 The control state register 36 is notified and the data indicating the closed state (CLOSE) is held. In response to this notification, the interrupt controller 14 issues a supply instruction to the power save controller 20 and the CLK controller 22. The supply instruction is an instruction to supply power to the power save controller 20 and an instruction to supply a CLK signal to the CLK controller 22. According to this supply instruction, 088 copies. ? ! 16 is supplied with power from the power save controller 20 and supplied with a clock signal from the CLK controller 22, and enters an operation state. That is, the sleep state of the DB B unit CPU 6 is released. And 088? 116 receives an interrupt instruction from the interrupt controller 14 and starts interrupt processing.

In the interrupt processing, an interrupt state check is executed (step S31). The interrupt state check receives the closing information of the switch 32 from the interrupt controller 14, checks the information, and stores the open / close information closed state. (Step S32). This storage is stored in a RAM (Random Access Memory) in the DBB unit CPU 6 or a storage element (not shown). As a result, the process corresponding to the closed state of the switch 32 is executed by the DBU unit CPU6.

Further, as shown in FIG. 9, when the switch 32 of the folding mechanism 30 is opened or the opening force is maintained when the switch 32 is opened (opening operation), this opening operation is performed. The status is notified to the open / close control status register 36 of the interrupt controller 14, and the data H indicating the open status (OPEN) is recognized. Upon receiving this notification, the interrupt controller 14 issues a supply instruction to the power save controller 20 and the CLK controller 2. This supply instruction is, as described above, an instruction to supply power to the power save controller 20 and an instruction to supply a click signal to the CLK controller 22. By this supply instruction, the DBB unit CPU6 The power is supplied from the roller 20 and the clock signal is supplied from the CLK controller 22 to enter the operating state. That is, the sleep state of the DBB unit CPU 6 is released. Then, the DBB CPU 6 receives an interrupt instruction from the interrupt controller 14 and starts interrupt processing.

In the interrupt processing, an interrupt status check is executed (step S41). In the interrupt status check, the switch 32 is opened from the interrupt controller 14 iffg is received, the information is checked, and the open / close information is stored. Is performed (step S42). As a result, the processing corresponding to the open state of the switch 32 is executed by the DBB section CPU6.

Next, an operation related to connection and disconnection of the USB cable 26 and the above-described interrupt processing will be described with reference to FIGS. 10 and 11. FIG. FIG. 10 is a state transition diagram showing processing of each unit triggered by the connection of the USB cable 26. FIG. 11 is a state transition diagram of processing of each unit triggered by the disconnection (disconnection) of the USB cable 26. FIG.

When the USB cable 26 is connected to the connector 24, the USB cable 26 is connected to the USB input / output unit 12. Therefore, the USB controller 26 informs the interrupt controller 14 of the connection power of the USB cable 26 and stores it in the connection status register 34 so as to indicate the connection. The signal is supplied from the interrupt controller 14 to the power save controller 20 and the CLK controller 22. This supply instruction is, as described above, an instruction to supply power to the power save controller 20 and an instruction to supply a clock signal to the CLK controller 22. By this supply instruction, 088 copies? 116 is supplied with power from the power save controller 20 and supplied with a clock signal from the CLK controller 22, and is put into operation. That is, the sleep state of the DBB unit CPU 6 is released. Then, the DBB section CPU 6 receives an interrupt instruction from the interrupt controller 14 and starts interrupt processing.

In the interrupt processing, an interrupt state check is executed (step S51). This interrupt state check is performed by receiving USB cable connection information from the interrupt controller 14, confirming the information, and memorizing the USB connection state. (Step S52). As a result, the processing corresponding to the connection status of the USB cable connection 26 is executed by the CPU 6 of the DBB unit. Will be done.

Also, as shown in FIG. 11, when the connection of the USB cape socket 26 is released, when the USB cape socket 26 is disconnected from the connector 24, the USB input / output section 12 becomes a USB cable. The connection of Bunore 26 will be released. Then, the USB cable 26 is released from the USB input / output unit 12 to the interrupt controller 14 to release the connection, and the connection status register 34 stores data indicating the release of the connection. In this case, a supply indicating force is issued from the interrupt controller 14 to the power save controller 20 and the CLK controller 22. As described above, this supply instruction is an instruction to supply power to the power save controller 20 and an instruction to supply a clock signal to the CLK controller 22. In response to this supply instruction, the DBB unit CPU 6 receives the power supply from the power save controller 20, receives the supply of the clock signal from the CLK controller 22, and enters the operating state. That is, the sleep state of the DBB unit CPU 6 is released. Then, the DBB CPU 6 receives an interrupt instruction from the interrupt controller 14 and starts an interrupt process.

In the interrupt processing, an interrupt status check is executed (step S61). In the interrupt status check, the USB cable non-connection (connection open) information is received from the interrupt controller 14, and the instantaneous R is checked. The USB non-connection state is stored (step S62). As a result, the processing corresponding to the disconnected state of the USB cable 26 is executed by the CPU 6 of the DBB unit.

Next, the operation related to the presence or absence of a data request from the PC 28 and the above-described interrupt processing will be described with reference to FIGS. 12, 13, and 14. FIG. FIG. 12 is a state transition diagram showing an interrupt process triggered by a data start request from the PC 28. FIG. 13 is a state transition diagram showing an interrupt process when there is no data communication with the PC 28. FIG. 4 is a state transition diagram showing a data communication process corresponding to a data start request from the PC.

In FIG. 12, the connection state between the USB I / O unit 12 and the PC 28 via the USB cable 26 is maintained, and when a data start request is issued from the PC 28 to the USB I / O unit 12, U The SB input / output unit 12 notifies the interrupt controller 14 of a data start request based on the data start request. Upon receiving this notification, the interrupt controller 14 sends a signal to the power save controller 20 and the CLK controller 22. The DBB unit instructs the power supply to CPU 6 and the supply of a click signal. The DBB CPU 6 receives the power supply and the clock signal to release the sleep state, and receives an interrupt instruction from the interrupt controller 14 to stop power supply or reduce the frequency of the clock signal (clock gear down). Interrupt processing is started in the CPU 6 of the DBB unit.

In this interrupt processing, the state of the interrupt is checked (step S71), and a USB data start request is notified from the interrupt controller 14 to start the USB communication start task (step S72).

In the course of such a series of processing, it is expected that a data start request will be made several times from the PC 28. In this case, while interrupt processing is being executed on the CPU 6 side of the DBB unit, the USB The input / output unit 12 accepts the data start request from the PC 28, stops notifying it to the interrupt controller 14, and waits for a response from the DBB unit CPU 6. In this case, until the DBB unit CPU 6 issues a response notification, the USB input / output unit 12 outputs a NAK indicating that preparation is in progress. As shown in FIG. 13, data communication with the PC 28 connected to the USB input / output unit 12 is not performed for a certain period of time. At the timing, the data is monitored from the interrupt controller 14 to the USB input / output unit 12. Along with this data monitoring, the interrupt controller 14 notifies the DBB unit CPU 6 of the interrupt processing. In this case, as described above, power is supplied from the power save controller 20 to the DBB unit CPU 6 and a clock signal is supplied from the CLK controller 22 to release the sleep state.

In this interrupt processing, the interrupt state confirmation (step S81) is performed. Upon receiving the notification of the USB data stop request from the interrupt controller 14, the power supply is stopped or the clock gear down processing power is executed ( Step S82).

As shown in FIG. 14, when USB data communication is established, the USB communication start task is started in the DBB unit CPU 6, and the data communication is started by the processing of the USB communication start task. Done. That is, in the USB communication start task, a communication start instruction force is generated (step S91), and a USB data communication start instruction is issued from the DBB unit CPU 6 to the interrupt controller 14. Assuming that the communication start instruction is issued from the PC 28, when the USB input / output unit 12 receives the data start request from the PC 28, it notifies the interrupt controller 14 of the data start request as described above. In this case, since the interrupt controller 14 has already received the USB data communication start instruction from the DBB unit CPU 6, the interrupt controller 14 does not notify the DBB unit CPU 6 of the data start request received from the PC 28.

And 088? The communication start preparation (ACK) is notified to the input / output unit 12 from 116 to 1138, and this notification is transmitted from the USB input / output unit 12 to the PC 28. After the communication start instruction, the DBB unit CPU6 stores the USB data transmission / reception state (step S92), starts the USB data communication (step S93), and notifies the USB input / output unit 12 of the notification. The data communication power is executed. That is, data transmission and reception are performed between the USB input / output unit 12 and the PC 28 through the USB cable 26.

In order to detect the state, the switching of the force state described using the switch 32 that is opened and closed by the folding mechanism 30 is performed by using the push button switch 39 shown in FIG. It may be constituted by a switch or the like. Next, another embodiment of the present invention will be described with reference to FIGS. 15 and 16. ο FIG. 15 shows a PDA (Personal Digital Assistant) as another embodiment, and FIG. 1 shows a handheld personal computer (PC) as an embodiment. In the above embodiments, the mobile terminal device 2 is described with reference to the mobile terminal device. However, the mobile terminal device and the control method thereof according to the present invention can be applied to the PDA 84 shown in FIG. 15 or the Mopile PC 86 shown in FIG. Can be configured as

In the PDA 84, a display unit 90 is installed on the front of the device main body 88, and an operation unit 92 is set below the display unit 90. A plurality of switches 94 are installed on the operation unit 92. The configuration of the mobile phone device 2 shown in FIG. 2 is built in the device main body 88, and the function of the switch 32 is assigned to, for example, the switch 94, and the PC 28 is connected via the USB cable 26, so that the intermittent control state The above-described processing such as the low power control state or the transmission / reception control state can be realized.

In addition, the display unit 98 is foldably attached to the device main body 96 via the folding mechanism 30 on the Mopile PC86, and the operation unit 100 is set on the device main body 96. The operation unit 100 is provided with a plurality of switches 102. The device main body 96 incorporates the configuration of the mobile phone device 2 shown in FIG. In this embodiment, the device main body 96 has a built-in switch 32 that is opened and closed by a folding mechanism 30. By connecting a PC 28 via a USB cable 26, intermittent control is also performed. The above-described processing such as the state, the low power control state, or the transmission / reception control state can be realized. In this case, for example, the function of the switch 32 can be assigned to the switch 102 as a setting unit.

In the above embodiment, the case where the USB cable 26 is used as a data input / output medium between the PC 28 as an external device and the portable telephone 2 as a portable terminal device has been described. For example, as shown in FIG. 4 and its description in Japanese Patent Application Laid-Open No. 7-321217, the portable electronic device 2 is directly connected to the external device PC 28 without using a cable. It may be connected to perform wireless data input / output via a device such as a wireless communication unit. In this case, instead of recognizing the connection of the cable as described in the above embodiment, data Input / output power connection recognition. Also, in the actual situation, the mobile terminal device 2, the PDA 84, and the mobile PC 86 have been described as examples of the mobile terminal device. However, the present invention relates to a PHS (Personal Handyphone System), a PC (Personal Computer). Alternatively, it may be constituted by a processing terminal such as a digital camera or the like, and is not limited to the portable device of the embodiment.

Further, in the embodiment, the mobile phone device 2 that realizes both the stop of the power supply and the stop of the clock signal is illustrated, but the stop of the power supply ihX can reduce the power consumption even if only one of the stop of the click signal is performed. The present invention is not limited to those having both of these, because the power can be reduced.

Also, as described above, the most preferred embodiments of the present invention have been described. However, the present invention is not limited to the above description, but is described in the appended claims, or for implementing the present invention. Based on the gist of the invention disclosed in the best mode, it is needless to say that various modifications and changes can be made by those skilled in the art, and it is needless to say that such changes and modifications are included in the scope of the present invention. No. Availability According to the present invention, control of a clock signal and power supply to a processing unit that executes processing such as wireless communication and data transmission / reception by cable, and processing unit that is not executing a heavy load control such as data transmission / reception are performed. Change to a low-frequency click signal,

-Reduces power consumption without sacrificing high-speed data transmission / reception by changing to the intermittent control state, low-power control state, or transmission / reception control state depending on the presence / absence of communication by cable, direct connection, wireless, etc. And efficient operation can be realized.

Claims

The scope of the claims

1. A portable terminal device that can send and receive data to and from external devices.

A clock signal generator for generating a clock signal;

A processing unit that receives a clock signal from the clock signal generation unit and executes transmission and reception of the data;

A setting unit for setting an operation halt in the processing unit;

In the setting section, the operation pause is set: In the case of ^, the supply of the quick signal to the processing section is stopped by the quick signal generating section, and a request for transmission and reception of the data occurs. A control unit for causing the mouth signal generator to supply the mouth signal to the processing unit;

A mobile terminal device having a configuration including:

2. The ability to send and receive data to and from external devices.

A processing unit for transmitting and receiving the data;

A power supply unit for supplying power to the processing unit;

A setting unit for setting an operation halt in the processing unit;

When the operation pause is set in the setting unit, the power supply unit stops the power supply to the processing unit. When the data transmission / reception request occurs, the power supply unit transmits the data to the processing unit. A control unit for feeding power

A mobile terminal device having a configuration including:

3. A mobile terminal that can transmit and receive data wirelessly to and from base stations and transmit and receive data to and from external devices.

A processing unit that performs one or both of the wireless transmission / reception processing and the data transmission / reception processing; a clock signal generation unit that generates a cook signal having a different frequency;

Recognizing that the data transmission / reception is not performed and the wireless transmission / reception is being performed, the clock signal generation unit generates a clock having a lower frequency than the processing unit. A control unit for supplying a signal,

A mobile terminal device having a configuration including:

4. The portable terminal device according to claim 1, wherein the control unit is configured to cause the processing unit to supply the clock signal at fixed time intervals.

5. The mobile terminal according to claim 2, wherein the control unit causes the processing unit to perform the power supply at regular time intervals. .

6. The mobile terminal device according to claim 1, wherein the setting unit is configured by a switch installed on a main body of the mobile terminal device.

7. A portable terminal device that can transmit and receive data wirelessly with a base station and transmit and receive data with external devices.

A processing unit that performs one or both of the transmission / reception processing by radio and the data transmission / reception processing;

A switch that is opened and closed by a folding mechanism installed in a device main body of the portable terminal device, and that sets an operation stop of the processing unit;

A clock signal generating unit that generates different frequencies of clock signals;

A power supply unit for supplying power to the processing unit;

In the case where the operation stop is set in the switch, and when the wireless transmission / reception is not being performed, the power supply unit stops power supply to the processing unit. The supply of the click signal to the processing unit is released, and when the wireless transmission / reception is being performed, the processing unit does not stop supplying power to the processing unit. A control unit for supplying a low clock signal;

A mobile terminal device having a configuration including:

8. The claims 1 to 7, wherein the portable terminal device is a portable telephone device.

9. A method for controlling a portable terminal device capable of transmitting and receiving data to and from an external device, comprising: a process of transmitting and receiving the data to and from the external device;

A process of recognizing a setting of operation suspension for a processing unit that controls transmission and reception of the data;

The operation pause; ^ If set, the clock signal generation unit stops supplying the clock signal to the processing unit, and upon receiving a data transmission / reception request from the external device, Causing the signal generation unit to supply the processing signal to the processing unit;

A method for controlling a mobile terminal device including:

10. A method for controlling a mobile terminal device having a processing unit for transmitting and receiving data to and from an external device,

A process of transmitting and receiving the data to and from the external device, a process of recognizing a setting of operation suspension for a processing unit that controls the transmission and reception of the data,

A mobile terminal configured to stop power supply to the processing unit when the operation suspension is set, and to cause the processing unit to supply power when the data transmission / reception request power is low. How to control the device.

1 1. Wireless communication with a base station; a method of controlling a mobile terminal device capable of transmitting and receiving data to and from external devices,

Performing one or both of the wireless transmission / reception processing and the data transmission / reception processing;

A process of recognizing a case where the data transmission / reception is not performed and a case where the wireless transmission / reception is being performed, and causing a clock signal generation unit to supply a low-frequency clock signal to a processing unit; A method for controlling a mobile terminal device including:

12. The method for controlling a portable terminal device according to claims 9 to 11, wherein the portable terminal device is configured to be a portable telephone device.