CN101373399A - Electronic device with mobile communication and control method thereof - Google Patents

The invention discloses an electronic device with mobile communication and a control method thereof, wherein the electronic device is connected with a network card and comprises the following components: a control circuit unit, which can be operated in a normal mode and a power-saving mode; the first interface is connected with the network card and the control circuit unit; a state transition detection circuit connected to the first interface; the embedded controller is connected with the state conversion detection circuit and the control circuit unit; if the control circuit unit is operated in the power saving mode and the network card is changed from an idle state to a restart state, the first interface transmits a change signal generated by the network card to the state transition detection circuit, and the state transition detection circuit enables the embedded controller to control the control circuit unit to be switched from the power saving mode to the normal mode according to the change signal. The invention can make the mobile communication device enter the power saving mode, and can enter the normal mode in time and make the user receive the call.

Electronic installation and control method thereof with mobile communication

Technical field

The present invention relates to a kind of electronic installation and control method thereof, and be particularly related to a kind of electronic installation and control method thereof with mobile communication.

Background technology

Because the progress of science and technology, present notebook computer or personal digital assistant (personaldigital assistant, hereinafter to be referred as PDA) or portable massaging device (media informationdevice, hereinafter to be referred as MID) all can an external third generation mobile net card (3G data card), be called for short the 3G network interface card, then become the 3G (Third Generation) Moblie device.

Connecting the 3G network interface card with notebook computer is example, and notebook computer promptly has the function of wireless Internet and the function of radio communication.That is to say that as long as carry notebook computer, the user can utilize the base station (base station) of notebook computer and outside to be connected and to reach the purpose of online or conversation in any time, any position.

Summary of the invention

In view of this, the object of the present invention is to provide a kind of electronic installation and control method thereof, to improve the disappearance of prior art with mobile communication.

The present invention proposes a kind of electronic installation with mobile communication and is connected with a network interface card, and comprising: a control circuit unit operates in a normal mode and a battery saving mode; One first interface is connected in network interface card and control circuit unit; One state exchange testing circuit is connected in first interface; And an embedded controller is connected in state exchange testing circuit and control circuit unit; Wherein, if control circuit unit operates in battery saving mode, and network interface card is become when restarting state by an idle state, first interface transmits a variable signal of network interface card generation to the state exchange testing circuit, the state exchange testing circuit makes this control circuit unit of embedded controller controls switch to normal mode by battery saving mode according to variable signal.

The present invention also proposes a kind of control method with electronic installation of mobile communication, comprises the following steps: when this electronic installation operates in a battery saving mode, detects one first signal and a secondary signal in one first interface in this electronics; When this first signal and this secondary signal does not change and when complementary, keep this electronic installation and operate in this battery saving mode; And when this first signal and this secondary signal change take place and be complementation, control this electronic installation and switch to a normal mode by this battery saving mode; Wherein, this electronic installation is connected to a network interface card with this first interface.

In order further to understand feature of the present invention and technology contents, see also following about detailed description of the present invention and accompanying drawing, yet accompanying drawing only provide with reference to and explanation, be not to be used for the present invention is limited.

Description of drawings

Figure 1 shows that known notebook computer connects the synoptic diagram of 3G network interface card.

Figure 2 shows that usb signal is idle state and restarts view.

Figure 3 shows that notebook computer of the present invention connects the synoptic diagram of 3G network interface card.

Embodiment

Because the 3G network interface card is to carry out the transmission of data with usb signal via the USB port in the PCI-Express mini card interface.Moreover according to further analysis, this usb signal can provide one first state and one second state, is respectively idle state (suspend state) and restarts state (resume state).Please refer to Fig. 2, it is depicted as usb signal is idle state and restarts view.When the D+ in the usb signal and D-signal maintained high level and low level individually constantly, this moment, visual 3G network interface card was in idle state.When the 3G network interface card will be restarted, D+ in the usb signal and D-signal can be converted to low level and high level, just restart state.Afterwards, the 3G network interface card just can begin to transmit signal.Also promptly, when the 3G network interface card is changed to when restarting state by idle state, promptly represent the 3G network interface card to produce a variable signal.

According to above-mentioned characteristic, the present invention proposes control circuit and the control method thereof in a kind of mobile communications device.Make mobile communications device can enter battery saving mode, and when external call utilized network interface card and user to converse, this mobile communications device can in time enter normal mode by power down mode and make the user can receive phone according to variable signal.

Please refer to Fig. 3, it is depicted as the synoptic diagram that notebook computer of the present invention connects the 3G network interface card.Have a control circuit unit 220 in the notebook computer 200, this control circuit unit 220 comprises a central processing unit 202, a north bridge chips 204, a South Bridge chip 206.Moreover, notebook computer 200 comprises a PCI-Express mini card interface, and 3G network interface card 250 can carry out the transmission of data according to this PCI-Express mini card interface and control circuit unit 220, reaches the function of wireless Internet and the function of radio communication.Moreover, also comprise in the notebook computer 200 a state exchange testing circuit (statechange detecting circuit) 230, with an embedded controller (embedded controller) 240.Wherein, state exchange testing circuit 230 is connected to the usb signal in this PCI-Express mini card interface, also is D+ and D-signal.And embedded controller 240 is connected to state exchange testing circuit 230 and control circuit unit 220.

According to embodiments of the invention, when 3G network interface card 250 is in idle state and notebook computer 200 and enters battery saving mode, embedded controller 240 output one enable signals (enable signal) are to state exchange testing circuit 230, in order to enabled state transition detection circuitry 230.And after state exchange testing circuit 230 was enabled, state exchange testing circuit 230 promptly can begin to detect the state variation of usb signal.When the 3G network interface card received external call, usb signal can be converted to the state of restarting by idle state.At this moment, state exchange testing circuit 230 detects the state variation of usb signal, and notice embedded controller 240 makes the control of the exportable systems of embedded controller 240 interrupt the South Bridge chip 206 of (system controlinterrupt is hereinafter to be referred as SCI) signals to the control circuit unit 220.Therefore, notebook computer 200 can and then enter the S0 normal mode according to the SCI signal, makes 3G network interface card 250 to carry out data transfer with control circuit unit 220.

Moreover when notebook computer 200 during in the S0 normal mode, embedded controller 240 stops output enable signal (enable signal) to state exchange testing circuit 230, makes enabled state transition detection circuitry 230 be failure to actuate.

According to embodiments of the invention, state exchange testing circuit 230, supplied by the standby power (standby power) of notebook computer 200 with embedded controller 240, therefore, when the battery saving mode of notebook computer 200, but state exchange testing circuit 230, with embedded controller 240 regular event still.

Moreover, comprise three PMOS transistors in the state exchange testing circuit 230.Wherein, first end of a PMOS transistor P1 is connected to the D+ signal, and the gate terminal of a PMOS transistor P1 is connected to the enable signal output terminal En of embedded controller 240; First end of the 2nd PMOS transistor P2 is connected to the D-signal, and the gate terminal of the 2nd PMOS transistor P2 is connected to the enable signal output terminal En of embedded controller 240; And, first end of the 3rd PMOS transistor P3 is connected to second end of the 2nd PMOS transistor P2, the gate terminal of the 3rd PMOS transistor P3 is connected to second end of a PMOS transistor P1, and second end of the 3rd PMOS transistor P3 is the output terminal O of state exchange testing circuit 230 and is connected to embedded controller 240.

When 3G network interface card 250 was in idle state and notebook computer 200 and enters battery saving mode, the enable signal of embedded controller 240 outputs was a low level.At this moment, a PMOS transistor P1 and the 2nd PMOS transistor P2 action.So, the 3rd PMOS transistor P3 grid receives high level D+ signal, makes the 3rd PMOS transistor P3 be failure to actuate, therefore, the output terminal O of state exchange testing circuit 230 is a low level, represents state exchange testing circuit 230 not detect the state variation of usb signal as yet.

When 3G network interface card 250 received external call, usb signal can be converted to the state of restarting by idle state.At this moment, the 3rd PMOS transistor P3 grid receives low level D+ signal, makes the 3rd PMOS transistor P3 move, and therefore, the high level D-signal of the 3rd PMOS transistor P3 first end can be passed to the output terminal O of state exchange testing circuit 230.Therefore, embedded controller 240 can learn that usb signal has produced state transformation, and embedded controller 240 exportable SCI signals are to control circuit unit 220, make notebook computer 200 enter the S0 normal condition and make 3G network interface card 250 to carry out data transfer with control circuit unit 220.

When notebook computer 200 entered the S0 normal condition, the enable signal of embedded controller 240 output can change high level into, and win PMOS transistor P1 and the 2nd PMOS transistor P2 are failure to actuate.Therefore, enabled state transition detection circuitry 230 is failure to actuate.

The above embodiments are to utilize the PCI-Express minicard interface that is connected in the 3G network interface card in the notebook computer, and utilize the usb signal in the middle of the PCI-Express mini card interface to reach getting in touch between 3G network interface card and the control circuit unit.Certainly, the present invention also can apply to the mobile communication network interface card of USB port and external other type of notebook computer.Also be, being external in USB port and mobile communication network interface card in the mobile communication network interface card is converted to when restarting state by idle state, utilize D+ signal and D-signal in the state exchange testing circuit detection USB port of the present invention, also can control notebook computer and enter normal mode by battery saving mode.

Therefore, the invention has the advantages that control circuit and the control method thereof that proposes in a kind of mobile communications device.Make mobile communications device can enter battery saving mode, and when external call utilized 3G network interface card and user to converse, mobile communications device can in time enter normal mode and make the user can receive phone.

In sum; though the present invention with preferred embodiment openly as above; yet it is not in order to limit the present invention; any those of ordinary skills; without departing from the spirit and scope of the present invention; when can doing various changes and retouching, so protection scope of the present invention is as the criterion when looking the scope that claims define.