CN105224059B - Method for remote data access and local device - Google Patents

Abstract

The present invention provides a method for remote access to data and a local device. When an embedded controller receives a remote control signal from a cloud server via a network unit, the embedded controller determines whether the power management state of the local device has been switched to a power saving state. When it is determined that the power saving state has been switched, the embedded controller drives a first switching unit to switch, so that the data received by the network unit can be transmitted to a storage unit via the first switching unit.

Description

Method for remote data access and local device

technical field

The present invention relates to a mechanism for remotely accessing data, and in particular to a method for remotely accessing data in a power-saving state and a local device.

Background technique

Generally speaking, if you want to use the mainframe at home to act as a server, the mainframe at home needs to be turned on all the time, so that connected devices such as tablets and smart phones can connect to the mainframe at home at any time. However, doing so is quite energy-intensive. Therefore, in order to save energy, the mainframe at home is turned off, and when the mainframe is to be accessed, the Wake-on-LAN technology is used to turn on the mainframe.

According to different software and hardware devices, the wake-on-lan technology may also include related remote control mechanisms such as a remote command to shut down and a remote command to restart. However, the wake-on-lan technology often has the problem of whether the network card or network chip of the host computer can support it.

Contents of the invention

The invention provides a method for remotely accessing data and a local device. When the local device is in a power-saving state, the cloud server can still access the storage unit of the local device.

The method for remotely accessing data of the present invention is suitable for remotely accessing a storage unit of a local device through a cloud server. The local device also includes a network unit, an embedded controller and a system control chip, and a first switching unit is set in the local device. The first switch unit is coupled to the storage unit, the system control chip and the embedded controller, and the embedded controller determines to transmit the data received by the network unit to the system control chip or the storage unit through the first switch unit. In this method, the embedded controller receives the remote control signal from the cloud server through the network unit. When receiving the remote control signal, the embedded controller determines whether the power management state of the local device has switched to the power saving state. In the power-saving state, the power supply to the system control chip is stopped, and the embedded controller obtains the control right of the local device. When it is determined that the power saving state has been switched, the embedded controller drives the first switching unit to switch, so that the data can be transmitted to the storage unit through the first switching unit.

The local device of the present invention includes: a network unit, an embedded controller, a system control chip and a first switching unit. The network unit is used for communicating with the cloud server. The embedded controller is coupled to the network unit to receive remote control signals from the cloud server. The first switching unit is coupled to the storage unit, the embedded controller, the system control chip and the network unit, and is used for determining to transmit the data received by the network unit to the system control chip or the storage unit. When the embedded controller receives a remote control signal from the cloud server through the network unit, and the power management state of the local device has switched to the power saving state of stopping power supply to the system control chip, the embedded controller drives the first The switching unit performs switching so that the data is transmitted to the storage unit through the first switching unit.

In an embodiment of the present invention, the storage unit is, for example, a memory card, and the local device further includes: a second switching unit, a first bridge, and a second bridge. The second switching unit is coupled to the system control chip and the embedded controller. The first bridge is coupled between the first switching unit and the second switching unit. The second bridge is coupled between the second switching unit and the memory card. When it is determined that the power saving state has been switched, the embedded controller drives the first switching unit to switch, so that the data can be transmitted to the first bridge through the first switching unit, and the embedded controller drives the second switching unit Switching is performed so that the data transmitted through the first bridge is transmitted to the memory card through the second switching unit.

In an embodiment of the present invention, the local device further includes: a firmware unit and a peripheral switching unit. The firmware unit is coupled to the system control chip and the embedded controller. The peripheral switching unit is coupled between the system control chip and the embedded controller, and is coupled to the audio output interface, the video output interface and the light emitting unit interface. When the firmware unit determines in the power saving state that the power management state has not been switched to the working state within the time period, when the preset time point is reached, the firmware unit sends a first signal to the system control chip and the embedded controller, In order to wake up the system control chip to access the memory card by the system control chip, and the firmware unit sends a second signal to the embedded controller, so that the embedded controller disables the audio output interface, video output interface and After the lighting unit is interfaced, an operating system is started. In the case of starting the operating system, the system control chip transmits all the data in the memory card to the built-in memory via the second switching unit, and deletes the data in the memory card, wherein the built-in memory is coupled to the system control chip, and deletes the data in the memory card. After saving the data in the memory card, switch the power management state to the power saving state.

In one embodiment of the present invention, when the power management state is the working state, the embedded controller drives the first switching unit to switch, so that the data can be transmitted to the system control chip through the first switching unit, and the embedded controller drives the The second switching unit performs switching so that the system control chip accesses the memory card through the second switching unit. If the system control chip detects that the remaining capacity of the memory card is less than the preset capacity, the system control chip transfers all the data in the memory card to an internal memory coupled to the system control chip, and deletes the data in the memory card.

In an embodiment of the present invention, the storage unit is, for example, a built-in memory, and the local device further includes: a second switching unit, a third switching unit, a first bridge, and a third bridge. The third switching unit is coupled to the built-in memory. The first bridge is coupled between the first switching unit and the second switching unit. The third bridge is coupled between the second switching unit and the third switching unit. When it is determined that the power saving state has been switched, the embedded controller drives the first switching unit to switch, so that the data can be transmitted to the first bridge through the first switching unit. Moreover, the embedded controller drives the second switching unit to switch, so that the data transmitted through the first bridge can be transmitted to the third bridge through the second switching unit. In addition, the embedded controller drives the third switching unit to switch, so that the data passing through the third bridge can be transmitted to the built-in memory through the third switching unit.

In one embodiment of the present invention, when the power management state is the working state, the embedded controller drives the first switching unit to switch, so that the data can be transmitted to the system control chip through the first switching unit, and the embedded controller drives the The third switching unit performs switching, so that the system control chip accesses the built-in memory through the third switching unit.

Based on the above, when the client device accesses the local device through the cloud server, it does not need to use Wake-on-LAN technology to wake up the entire local device, but can access the local device in a power-saving state The storage unit of the device not only saves energy, but also improves the efficiency of use.

In order to make the above-mentioned features and advantages of the present invention more comprehensible, the following specific embodiments are described in detail with reference to the accompanying drawings.

Description of drawings

FIG. 1 is a block diagram of a local device according to a first embodiment of the present invention;

FIG. 2 is a flowchart of a method for remotely accessing data according to the first embodiment of the present invention;

3A and 3B are block diagrams of a local device according to a second embodiment of the present invention;

4 is a flowchart of a method for remotely accessing data according to a second embodiment of the present invention;

5 is a flow chart of a method for transferring data in a power-saving state according to a second embodiment of the present invention;

FIG. 6 is a block diagram of a local device according to a third embodiment of the present invention;

7 is a flowchart of a method for remotely accessing data according to a third embodiment of the present invention;

FIG. 8 is a block diagram of a local device according to a fourth embodiment of the present invention.

Explanation of reference signs:

100, 300, 600, 800: local device;

110: system control chip;

120: embedded controller;

130: network unit;

140: the first switching unit;

150: storage unit;

210, 620: the first bridge;

220, 630: the second switching unit;

230, 810: the second bridge;

240, 820: memory card;

250, 610: built-in memory;

260: firmware unit;

270: Peripheral switching unit;

281: audio output interface;

282: video output interface;

283: light-emitting unit interface;

640: the third bridge;

650: the third switching unit;

S205-S220: each step of the method for remotely accessing data in the first embodiment;

S405-S415: each step of the method for remotely accessing data in the second embodiment;

S505-S530: each step of the method for data dumping in the power-saving state of the second embodiment;

S705-S720: each step of the method for remotely accessing data in the third embodiment.

Detailed ways

In the following embodiments, after the client device is connected to the network, it can remotely access the data of the local device through the cloud server. The client device is, for example, a smart phone, a tablet computer, a notebook computer or a personal computer. When the client device logs in to the cloud server and wants to perform remote access to the local device, the cloud server will send a remote control signal to the local device, so that the local device can drive its internal device according to the power management status at that time. Related components, so that the cloud server can smoothly access the storage unit of the local device.

first embodiment

FIG. 1 is a block diagram of a local device according to a first embodiment of the present invention. Referring to FIG. 1 , the local device 100 includes a system control chip 110 , an embedded controller 120 , a network unit 130 , a first switching unit 140 and a storage unit 150 . The storage unit 150 is, for example, a built-in memory, or a memory card.

The system control chip 110 is coupled to the first switching unit 140 and the storage unit 150 . Here, the system control chip 110 is, for example, a system on chip (SOC for short), which integrates the functions of a central processing unit (Central Processing Unit, CPU for short) and a platform controller hub (Platform Controller Hub, PCH for short). In other embodiments, the system control chip 110 is, for example, a platform controller hub, which is coupled to the central processing unit.

The embedded controller 120 is coupled to the network unit 130 and the first switching unit 140 . The embedded controller 120 is used for receiving the remote control signal transmitted from the cloud server through the network unit 130 and used for controlling the first switching unit 140 .

Here, when the power management state of the local device 100 is the working state, the control right of the local device 100 is obtained by the system control chip 110 . When the power management state of the local device 100 is switched to the power saving state, the system control chip 110 is not powered, and the embedded controller 120 obtains the control right of the local device 100 at this time. For example, regardless of whether the local device 100 is turned on or off, when the local device 100 is plugged in, the embedded controller 120 , the network unit 130 and the first switching unit 140 are all in a state of supplying weak power. The weak power supply allows the network unit 130 to maintain a minimum operating capability, so that the network unit 130 can listen to network broadcast information from the outside. And only when the power management state of the local device 100 is the working state, the system control chip 110 will be in the state of being powered. According to the Advanced Configuration and Power Interface (ACPI for short) standard, the working state is the S0 state, and the power saving state is the S3 state, the S4 state or the S5 state.

The first switching unit 140 is coupled to the storage unit 150 , the embedded controller 120 , the system control chip 110 and the network unit 130 . The first switching unit 140 determines to transmit the data received by the network unit 130 to the system control chip 110 or the storage unit 150 according to the control of the embedded controller 120 . That is, the embedded controller 120 controls the switching of the first switching unit 140 to determine whether to disconnect the connection relationship between the system control chip 110 and the network unit 130 . For example, in the working state, the system control chip 110 is connected to the network unit 130 through the first switching unit 140 . In the power-saving state, the embedded controller 120 controls the first switch unit 140 to switch, so as to disconnect the connection between the system control chip 110 and the network unit 130, so that the storage unit 150 can be connected to the network through the first switch unit 140. Network element 130.

Since the system control chip 110 is in a non-operational state in the power-saving state, the embedded controller 120 can drive related internal components of the local device 100 so that the cloud server can access the local device 100 smoothly. The method for remotely accessing data will be described below in combination with the above-mentioned local device 100 .

FIG. 2 is a flowchart of a method for remotely accessing data according to the first embodiment of the present invention. Please refer to FIG. 1 and FIG. 2 at the same time. In step S205 , the embedded controller 120 receives a remote control signal from the cloud server through the network unit 130 . For example, when the client device logs into the cloud server and intends to read and write data to the local device 100 , the cloud server will send a remote control signal to the local device 100 .

When the embedded controller 120 receives the remote control signal through the network unit 130, in step S210, the embedded controller 120 determines whether the power management state has switched to the power saving state. If it has switched to the power-saving state, execute step S215; if it is not switched to the power-saving state but is in the working state, execute step S220.

In step S215 , the embedded controller 120 drives the first switching unit 140 to switch, so that the data received by the network unit 130 is transmitted to the storage unit 150 through the first switching unit 140 . When the embedded controller 120 determines that it has switched to the power-saving state, since the system control chip 110 is not powered at this time, the system control chip 110 cannot access the storage unit 150. Therefore, the embedded controller 120 transmits The control signal is sent to the first switching unit 140, so that the first switching unit 140 switches to disconnect the connection relationship between the system control chip 110 and the network unit 130, and then turn on the connection between the network unit 130 and the storage unit 150, The data received by the network unit 130 is transmitted to the storage unit 150 through the first switching unit 140 .

If the power management state of the embedded controller 120 is the working state when receiving the remote control signal, then in step S220 , the system control chip 110 accesses the storage unit 150 . For example, in the working state, the first switch unit 140 conducts the connection between the network unit 130 and the system control chip 110, so that the data received by the network unit 130 is transmitted to the system control chip 110 through the first switch unit 140, and the The system controls the chip 110 to access the storage unit 150 .

The second embodiment and the third embodiment are enumerated below, and the storage unit 150 is a memory card and the storage unit 150 is a built-in memory (such as a hard disk) respectively for description.

second embodiment

3A and 3B are block diagrams of a local device according to a second embodiment of the present invention. Here, the memory card 240 is used to replace the storage unit 150 of the first embodiment, and components having the same functions as those of the first embodiment are marked with the same symbols, and related descriptions are omitted. 3A, the local device 300 includes a system control chip 110, an embedded controller 120, a network unit 130, a first switching unit 140, a first bridge 210, a second switching unit 220, a second bridge 230, a memory card 240 and built-in memory 250 . Here, the memory card 240 is, for example, a Secure Digital Memory Card (Secure Digital Memory Card, SD card for short). The built-in memory 250 is, for example, a hard disk.

The embedded controller 120 is coupled to the first switching unit 140 and the second switching unit 220 through a General Purpose Input Output (GPIO) interface. The first switching unit 140 is coupled to the network unit 130 , the system control chip 110 and the first bridge 210 through a Peripheral Component Interconnect Express (PCIE for short) interface. The second switching unit 220 is coupled to the first bridge 210 , the second bridge 230 and the system control chip 110 through a Universal Serial Bus (USB for short). The second bridge 230 is coupled to the memory card 240 through a serial peripheral interface (Serial Peripheral Interface, SPI for short). The system control chip 110 is coupled to the built-in memory 250 through a Serial Advanced Technology Attachment (SATA) interface.

In FIG. 3B , the local device 300 further includes a firmware unit 260 , a peripheral switching unit 270 , an audio output interface 281 , a video output interface 282 , and a lighting unit interface 283 . The firmware unit 260 is coupled to the system control chip 110 and the embedded controller 120 . The firmware unit 260 is, for example, a Basic Input/Output System (BIOS for short). The peripheral switching unit 270 is coupled between the system control chip 110 and the embedded controller 120 , and is coupled to the audio output interface 281 , the video output interface 282 and the light emitting unit interface 283 .

In the second embodiment, the first bridge 210 is coupled between the first switching unit 140 and the second switching unit 220, which is responsible for decoding and encoding, so that the data via the PCIE interface is re-encoded and then converted into USB format. data. The second bridge 230 is coupled between the second switching unit 220 and the memory card 240 , and is responsible for decoding and encoding, so that the data via the USB is re-encoded and converted into data in the SPI format.

When the embedded controller 120 receives a remote control signal from the cloud server through the network unit 130, and the power management state of the local device 300 has been switched to the power saving state, the embedded controller 120 respectively through the corresponding GPIO interface A control signal is sent to drive the first switching unit 140 and the second switching unit 220 to switch.

For example, FIG. 4 is a flowchart of a method for remotely accessing data according to the second embodiment of the present invention. Here, when the power management state of the local device 300 is the working state, the first switching unit 140 turns on the connection between the network unit 130 and the system control chip 110 , and the second switching unit 220 turns on the system control chip 110 The connection with the second bridge 230 is used for accessing the memory card 240 by the system control chip 110 . When the power management state of the local device 300 is switched to the power saving state, the embedded controller 120 will respectively drive the first switching unit 140 and the second switching unit 220 to switch, so that the data received by the network unit 130 can be Transfer directly to memory card 240 .

Please refer to FIG. 3A and FIG. 4 at the same time. In step S405, in the power saving state, the embedded controller 120 receives the remote control signal. After that, in step S410 , the embedded controller 120 drives the first switching unit 140 to switch, so that the data is transmitted to the first bridge 210 through the first switching unit 140 . Moreover, in step S415 , the embedded controller 120 drives the second switching unit 220 to switch, so that the data transmitted through the first bridge 210 can be transmitted to the memory card 240 through the second switching unit 220 .

Specifically, when the embedded controller 120 receives a remote control signal in the power saving state, the embedded controller 120 will send a control signal to the first switching unit 140, so that the first switching unit 140 turns on the network unit 130 connection with the first bridge 210. Moreover, the embedded controller 120 transmits another control signal to the second switching unit 220 so that the second switching unit 220 conducts the connection between the first bridge 210 and the second bridge 230 . Accordingly, in the power-saving state, the data received by the network unit 130 can be transmitted to the memory card 240 via the first switching unit 140, the first bridge 210, the second switching unit 220, and the second bridge 230 in sequence. .

In addition, in the power-saving state, it may be further judged whether to perform the data transfer operation. An example is given below to illustrate. FIG. 5 is a flow chart of a method for transferring data in a power-saving state according to the second embodiment of the present invention. Please refer to FIG. 3B and FIG. 5 at the same time. In step S505, in the power saving state, the firmware unit 260 of the local device 300 determines whether the power management state has been switched to the working state within a time period. For example, the time zone is set to be from 0:00 am to 12:00 midnight every day. The firmware unit 260 will determine whether the local device 300 has switched to the working state between 0:00 am and 12:00 midnight.

If the local device 300 switches to the working state within the set time period, the data transfer operation will not be performed. That is to say, if it has been switched to the working state within the set time period, then in the working state, the system control chip 110 will automatically perform the operation of data transfer, so as to store the data in the memory card in the power saving state. The data of 240 is transferred to the built-in memory 250.

If the local device 300 has not been switched to the working state within the set time period, then step S510 to step S530 are executed to dump the data of the memory card 240 to the built-in memory 250 .

In step S510, when reaching the preset time point (for example, midnight), the firmware unit 260 sends a first signal to the system control chip 110, so as to wake up the system control chip 110 to switch to the working state and the system control chip 110 to access memory card 240. Here, in order to prevent the user of the local device 300 from being startled by the automatic boot of the local device 300 , step S515 is executed while waking up the system control chip 110 .

In step S515 , the firmware unit 260 sends a second signal to the embedded controller 120 , so that the embedded controller 120 disables the audio output interface 281 , the video output interface 282 and the light emitting unit interface 283 . Specifically, the embedded controller 120 sends a control signal to the peripheral switching unit 270 so that the peripheral switching unit 270 disconnects the system control chip 110 from the audio output interface 281 , the video output interface 282 and the light emitting unit interface 283 .

Afterwards, in step S520, the system control chip 110 starts the operating system. Since the connection between the system control chip 110 and the audio output interface 281, the video output interface 282, and the light emitting unit interface 283 has been disconnected, no sound will be issued when the operating system is started, and no picture will be displayed on the screen. , nor emit any light.

And, in step S525, when the system control chip 110 starts the operating system, the system control chip 110 transfers all the data in the memory card 240 to the built-in memory 250 via the second switching unit 220, and deletes the data in the memory card 240. The data. After deleting the data in the memory card 240, in step S530, switch the power management state to the power saving state. For example, if the data transfer is performed in the S5 state, after the transfer is completed, the local device 300 is turned off; if the data transfer is performed in the S3 state, after the transfer is completed, the local device 300 is switched back to the S3 state .

In addition, in the state of entering the operating system, the data transfer operation may be performed automatically when the capacity of the memory card 240 is almost insufficient. For example, when the power management state is the working state, the embedded controller 120 drives the first switching unit 140 to switch, so that data can be transmitted to the system control chip 110 through the first switching unit 140 . Moreover, the embedded controller 120 drives the second switching unit 220 to switch, so that the system control chip 110 accesses the memory card 240 through the second switching unit 220 . In the working state, the system control chip 110 checks whether the remaining capacity of the memory card 240 is less than a preset capacity (for example, 500MB). If the remaining capacity is less than the preset capacity, the system control chip 110 will automatically transfer all the data in the memory card 240 to the built-in memory 250 (such as a hard disk) coupled to the system control chip 110, and delete the data in the memory card 240 . And if the remaining capacity is not less than the preset capacity, the system control chip 110 will not automatically perform the dump operation.

third embodiment

FIG. 6 is a block diagram of a local device according to a third embodiment of the present invention. Here, the storage unit 150 of the first embodiment is replaced by a built-in memory 610, and components having the same functions as those of the first embodiment are marked with the same symbols, and related descriptions are omitted. 6, the local device 600 includes a system control chip 110, an embedded controller 120, a network unit 130, a first switching unit 140, a built-in memory 610, a first bridge 620, a second switching unit 630, a third bridge device 640 and the third switching unit 650.

The embedded controller 120 is coupled to the first switching unit 140 , the second switching unit 630 and the third switching unit 650 through the GPIO interface. The first switching unit 140 is coupled to the network unit 130 , the system control chip 110 and the first bridge 620 through the PCIE interface. The second switching unit 630 is coupled to the first bridge 620 and the third bridge 640 through USB. The third switching unit 650 is coupled to the system control chip 110 , the built-in memory 610 and the third bridge 640 through the SATA interface.

In the third embodiment, the first bridge 620 is coupled between the first switching unit 140 and the second switching unit 630, which is responsible for decoding and encoding, so that the data via the PCIE interface is re-encoded and then converted into USB format. data. The third bridge 640 is coupled between the second switching unit 630 and the third switching unit 650 , and is responsible for decoding and encoding, so that the data via the USB is re-encoded and converted into data in the SATA format.

When the embedded controller 120 receives a remote control signal from the cloud server through the network unit 130, and the power management state of the local device 600 has been switched to the power saving state, the embedded controller 120 respectively through the corresponding GPIO interface A control signal is sent to drive the first switching unit 140 , the second switching unit 630 and the third switching unit 650 to switch.

For example, FIG. 7 is a flowchart of a method for remotely accessing data according to a third embodiment of the present invention. Here, when the power management state of the local device 600 is in the working state, the connection between the network unit 130 and the system control chip 110 is turned on by the first switching unit 140 , and the system is turned on by the third switching unit 650 . The connection between the control chip 110 and the built-in memory 610 is used to access the built-in memory 610 by the system control chip 110 . When the power management state of the local device 600 is switched to the power saving state, the embedded controller 120 will respectively drive the first switching unit 140, the second switching unit 220, and the third switching unit 650 to switch, so that the network unit The data received by the 130 can be directly transmitted to the built-in memory 610 without going through the system control chip 110 .

Please refer to FIG. 6 and FIG. 7 , in step S705 , in the power saving state, the embedded controller 120 receives a remote control signal. After that, in step S710 , the embedded controller 120 drives the first switching unit 140 to switch, so that the data is transmitted to the first bridge 620 through the first switching unit 140 . That is, the embedded controller 120 transmits a control signal to the first switching unit 140 so that the first switching unit 140 conducts the connection between the network unit 130 and the first bridge 620 .

In step S715 , the embedded controller 120 drives the second switching unit 630 to switch, so that the data transmitted through the first bridge 620 can be transmitted to the third bridge 640 through the second switching unit 630 . That is, the embedded controller 120 transmits a control signal to the second switching unit 630 so that the second switching unit 630 conducts the connection between the first bridge 620 and the third bridge 640 .

In step S720 , the embedded controller 120 drives the third switching unit 650 to switch, so that the data passing through the third bridge 640 can be transmitted to the built-in memory 610 through the third switching unit 650 . That is, the embedded controller 120 transmits a control signal to the third switching unit 650, so that the third switching unit 650 disconnects the connection between the system control chip 110 and the built-in memory 610, and connects the third bridge 640 and the built-in memory 610. the connection between.

Accordingly, in the power-saving state, the data received by the network unit 130 can sequentially pass through the first switching unit 140, the first bridge 620, the second switching unit 630, the third bridge 640, and the third switching unit 650. And sent to the built-in memory 610 .

Fourth embodiment

FIG. 8 is a block diagram of a local device according to a fourth embodiment of the present invention. In the fourth embodiment, the local device 800 has both the memory card 820 and the built-in memory 610 . When the client device wants to access the local device 800 through the cloud server, it can decide to access the memory card 820 or the built-in memory 610 according to the user's choice of the client device. Here, components having the same functions as those in the first embodiment and the third embodiment are marked with the same symbols, and related descriptions are omitted.

Please refer to FIG. 8, the local device 800 includes a system control chip 110, an embedded controller 120, a network unit 130, a first switching unit 140, a built-in memory 610, a first bridge 620, a second switching unit 630, a third bridge device 640 , the third switching unit 650 , the second bridge 810 and the memory card 820 .

The embedded controller 120 is coupled to the first switching unit 140 , the second switching unit 630 and the third switching unit 650 through the GPIO interface. The first switching unit 140 is coupled to the network unit 130 , the system control chip 110 and the first bridge 620 through the PCIE interface. The second switching unit 630 is coupled to the first bridge 620 , the second bridge 810 and the third bridge 640 through USB. The third switching unit 650 is coupled to the system control chip 110 , the built-in memory 610 and the third bridge 640 through the SATA interface. The memory card 820 is coupled to the second bridge 810 through SPI.

In the fourth embodiment, in the power saving state, the second switching unit 630 turns on the connection between the first bridge 620 and the second bridge 810 . Accordingly, in the power saving state, the data received by the network unit 130 is stored in the memory card 820 . For the description of accessing the memory card 820 in the power-saving state, reference may be made to the second embodiment, and details will not be repeated here. In addition, in the working state, the second switching unit 630 conducts the connection between the second bridge 810 and the third bridge 640 . Accordingly, the data in the memory card 820 can be automatically transferred to the built-in memory 610 through the third switching unit 650 every time it is switched to the working state. Moreover, the data in the built-in memory 610 can also be transmitted to the memory card 820 through the third switching unit 650 in the working state.

When the user of the client device decides to access the memory card 820, in the power-saving state, the embedded controller 120 transmits control signals to the first switching unit 140 and the second switching unit 630 respectively through the corresponding GPIO interface, so as to guide The connection between the network unit 130 and the first bridge 620 is passed, and the connection between the first bridge 620 and the second bridge 810 is passed.

When the user of the client device decides to access the built-in memory 610, in the power saving state, the embedded controller 120 transmits control signals to the first switching unit 140, the second switching unit 630 and the The third switching unit 650 is configured to conduct the connection between the network unit 130 and the first bridge 620, to conduct the connection between the first bridge 620 and the third bridge 640, and to conduct the connection between the third bridge 640 and the third bridge 640. The connection between the built-in memory 610.

In addition, in the working state, the system control chip 110 accesses the memory card 820 or the built-in memory 610 .

To sum up, when the client device accesses the local device through the cloud server, a switching unit is provided between the system control chip and the storage unit, and the switching of the switching unit is controlled by the embedded controller to conduct The channel between the network unit and the storage unit enables the data of the network unit to be transmitted to the storage unit without going through the system control chip. Accordingly, in the power-saving state, it is not necessary to use Wake-on-LAN technology to wake up the entire local device, and the storage unit of the local device can also be accessed, which not only saves energy, but also improves the efficiency of use. efficiency.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present invention, rather than limiting them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: It is still possible to modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the technical solutions of the various embodiments of the present invention. scope.

Claims (14)

1. A kind of 1. method of remote access data, it is characterised in that suitable for by cloud server come remote access local side The storage unit of device, wherein the local end device further include network unit, embedded controller and system control chip, should Method includes：

   The embedded controller receives Far end control signal by the network unit from the cloud server, and controls the local First switch unit of end device, decides whether to disconnect the system control chip and the network list by first switch unit Connection between member, its first switch unit are coupled to the storage unit, the system control chip and the embedded Control Device；

   When receiving the Far end control signal, which judges the power management states of the local end device for province Electricity condition or working status, wherein, under the power down mode, stop power supply to the system control chip；

   The control of the local end device is obtained by the system control chip for the working status in the judgement power management states In the case of power, which drives first switch unit to turn between the system control chip and the network unit Connect and disconnect the connection between the network unit and the storage unit so that the system control chip, which is able to access this, to be deposited Storage unit, and the data that the network unit is received are sent to the storage unit by the system control chip；And

   The control of the local end device is obtained by the embedded controller for the power down mode in the judgement power management states In the case of power, which drives first switch unit to disconnect between the system control chip and the network unit Connect and turn on the connection between the network unit and the storage unit so that the data that the network unit is received obtain To be conveyed directly to the storage unit by first switch unit.
2. 2. according to the method described in claim 1, it is characterized in that, the storage unit is memory card, which leads to Cross the first bridge and be coupled to the second switch unit, which is coupled to the memory card via the second bridge, and And second switch unit is coupled to the system control chip and the embedded controller, is controlled by the embedded controller The switching of second switch unit is to determine to access the memory card by the system control chip or the embedded controller；

   Wherein in the case where judging to have switched to the power down mode, including：

   The embedded controller drives first switch unit to switch over so that the data are able to by first switch unit It is sent to first bridge；And

   The embedded controller drives second switch unit to switch over so that the data transmitted via first bridge It is able to be sent to the memory card by second switch unit.
3. 3. according to the method described in claim 2, it is characterized in that, in the case where judging to have switched to the power down mode, go back Including：

   Detect whether the power management states in time section once switched to work shape by the firmware unit of the local end device State；

   If the power management states had not switched to the working status in the time section, when reaching preset time point, First signal is sent to the system control chip by the firmware unit, uses and wakes up the system control chip, with by the system control Coremaking piece accesses the memory card；

   In the case of the system control chip start-up operation system, which should via second switch unit Data in memory card are all sent in interior device, memory, and delete the data in the memory card, wherein the built-in storage Device is coupled to the system control chip；And

   After the data in deleting the memory card, which is switched into the power down mode.
4. 4. if according to the method described in claim 3, it is characterized in that, the power management states be not in the time section The working status is switched to, when reaching the preset time point, is further included：

   Secondary signal is sent to the embedded controller by the firmware unit so that the embedded controller forbidden energy audio output connects After mouth, video output interface and luminescence unit interface, start the operating system.
5. 5. according to the method described in claim 2, it is characterized in that, further include：

   In the case where the power management states are the working status, which drives first switch unit to switch over, So that the data are able to be sent to the system control chip by first switch unit, and the embedded controller drives this Second switch unit switches over so that the system control chip accesses the memory card by second switch unit.
6. 6. according to the method described in claim 5, it is characterized in that, when the power management states switch to the working status, Further include：

   Whether the residual capacity for checking the memory card by the system control chip is less than preset capacity；

   If the residual capacity is less than the preset capacity, the data in the memory card are all transmitted by the system control chip To being coupled to the hard disk of the system control chip, and delete the data in the memory card.
7. 7. according to the method described in claim 1, it is characterized in that, the storage unit is interior device, memory, first switching is single Member is coupled to the second switch unit by the first bridge, which passes through the 3rd switch unit and the 3rd bridge Second switch unit is coupled to, and the 3rd switch unit is coupled to the interior device, memory；

   In the case where judging to have switched to the power down mode, further include：

   The embedded controller drives first switch unit to switch over so that the data are able to by first switch unit It is sent to first bridge；

   The embedded controller drives second switch unit to switch over so that the data transmitted via first bridge It is able to be sent to the 3rd bridge by second switch unit；And

   The embedded controller drives the 3rd switch unit to switch over so that is able to via the data of the 3rd bridge The interior device, memory is sent to by the 3rd switch unit.
8. 8. the method according to the description of claim 7 is characterized in that further include：

   In the case where the power management states are the working status, which drives first switch unit to switch over, So that the data are able to be sent to the system control chip by first switch unit, and the embedded controller drives this 3rd switch unit switches over so that the system control chip accesses the interior device, memory by the 3rd switch unit.
9. A kind of 9. local end device, it is characterised in that including：

   Network unit, is linked up with cloud server；

   Embedded controller, is coupled to the network unit, to receive Far end control signal from the cloud server；

   System control chip；And

   First switch unit, is coupled to storage unit, the embedded controller, the system control chip and the network unit, It is determining the connection relation between the system control chip and the network unit；

   Wherein, when the embedded controller receives the Far end control signal by the network unit from the cloud server, The embedded controller judges the power management states of the local end device for power down mode or working status, wherein, in the province Stop power supply under electricity condition to the system control chip,

   The control of the local end device is obtained by the system control chip for the working status in the judgement power management states In the case of power, which drives first switch unit to turn between the system control chip and the network unit Connect and disconnect the connection between the network unit and the storage unit so that the system control chip, which is able to access this, to be deposited Storage unit, and the network unit received data is sent to the storage unit by the system control chip,

   The control of the local end device is obtained by the embedded controller for the power down mode in the judgement power management states In the case of power, which drives first switch unit to disconnect between the system control chip and the network unit Connect and turn on the connection between the network unit and the storage unit so that the data that the network unit is received obtain To be conveyed directly to the storage unit by first switch unit.
10. 10. local end device according to claim 9, it is characterised in that the storage unit is memory card, which fills Put and further include：

    Second switch unit, is coupled to the system control chip and the embedded controller；

    First bridge, is coupled between first switch unit and second switch unit；And

    Second bridge, is coupled between second switch unit and the memory card；

    Wherein, judge have switched to the power down mode in the case of, the embedded controller drive first switch unit into Row switching so that the data are able to be sent to first bridge, also, the embedded controller by first switch unit Second switch unit is driven to switch over so that the data transmitted via first bridge are able to second switch by this Unit is sent to the memory card.
11. 11. local end device according to claim 10, it is characterised in that further include：

    Firmware unit, is coupled to the system control chip and the embedded controller；And

    Peripheral switch unit, is coupled between the system control chip and the embedded controller, and is coupled to audio output Interface, video output interface and luminescence unit interface；

    Wherein, the firmware unit under the power down mode judge in time section the power management states do not switch to Under the working status, when reaching preset time point, the first signal is sent to the system control chip by the firmware unit and is somebody's turn to do Embedded controller, uses and wakes up the system control chip to access the memory card by the system control chip, also, this is solid Part unit sends secondary signal to the embedded controller so that the embedded controller is by the periphery switch unit come forbidden energy After the audio output interface, the video output interface and the luminescence unit interface, start-up operation system；

    In the case of start-up operation system, the system control chip is via second switch unit by the data in the memory card All it is sent in interior device, memory, and deletes the data in the memory card, wherein the interior device, memory is coupled to the system Control chip, and after the data in deleting the memory card, which is switched into the power down mode.
12. 12. local end device according to claim 10, it is characterised in that in the power management states be the working status Under, which drives first switch unit to switch over so that the data are able to by first switch unit The system control chip is sent to, and the embedded controller drives second switch unit to switch over so that the system Control chip accesses the memory card by second switch unit；

    , will by the system control chip if the residual capacity that the system control chip checks the memory card is less than preset capacity The data in the memory card are completely transferred to be coupled to the inscribed memory of the system control chip, and delete the memory card In the data.
13. 13. local end device according to claim 9, it is characterised in that the storage unit is interior device, memory, the local End device further includes：

    Second switch unit；

    3rd switch unit, is coupled to the interior device, memory；

    First bridge, is coupled between first switch unit and second switch unit；And

    3rd bridge, is coupled between second switch unit and the 3rd switch unit；

    In the case where judging to have switched to the power down mode, which drives first switch unit to be cut Change so that the data are able to be sent to first bridge by first switch unit, also, the embedded controller drives Second switch unit switches over so that the data transmitted via first bridge are able to by second switch unit It is sent to the 3rd bridge；And the embedded controller drives the 3rd switch unit to switch over so that via this The data of three bridges are able to be sent to the interior device, memory by the 3rd switch unit.
14. 14. local end device according to claim 13, it is characterised in that the power management states are the working status Under, which drives first switch unit to switch over so that the data are able to by first switch unit The system control chip is sent to, and the embedded controller drives the 3rd switch unit to switch over so that the system Control chip accesses the interior device, memory by the 3rd switch unit.