KR101947528B1 - Firmware update method, device able to update firmware and firmware update system according to dynamic recognition of update environment - Google Patents

Abstract

The present invention relates to a firmware update method according to dynamic recognition of an update environment, a device capable of updating firmware, and a firmware update system. The firmware update method comprises the following steps: attempting to recognize a first update device connected to a first network; attempting to recognize a second update device connected to a second network; determining an update device to update firmware based on whether the first update device and the second update device are recognized or not and firmware version information received from each update device; and updating the firmware through the corresponding network of the determined update device.

Description

TECHNICAL FIELD [0001] The present invention relates to a firmware update method, a device update method, and a firmware update method,

The present invention relates to a firmware update method, a device capable of updating a firmware, and a firmware update system according to dynamic recognition of an update environment. More specifically, the present invention relates to an apparatus and method for automatically recognizing, A firmware updateable device and a firmware update system according to the dynamic recognition of an update environment, which enables update of built-in firmware through an update device selected in accordance with a priority order.

As network technology advances, devices can be connected to various networks. For example, the device may be connected to a wired LAN, a local area network such as a wireless LAN, a personal area network such as Bluetooth, ZigBee, and the like, and further to a broadband network such as the Internet network.

Through each type of network, a device can communicate with a personal device, with other devices in the local area, or with a server, etc., over a broadband network. Thus, the device has a plurality of network interfaces and is capable of communicating with other devices through a plurality of network interfaces.

A device can perform functions assigned or defined by a program or the like. The device has firmware therein to drive the firmware to perform a defined function. Firmware defined within the device is generally updatable.

The firmware of the device is updatable via a remote server that is updated in conjunction with a remote server over a broadband network and is connectable to a designated networking scheme.

As the devices can be connected to various networks, the devices need to be updated in various ways. For example, the device can be updated in firmware via a directly connected personal computer, and can be updated through a device management device in a local area network connected to Ethernet, Wi-Fi, or the like. Further, the device can be updated via a server (cloud server) connected to the broadband network.

Thus, there is a need for devices to be firmware updates from devices that are connected through various networks.

In addition, there is a need to determine which device to update firmware among the multiple update devices when the device is connected to multiple devices over various networks.

There is a need for a firmware update method, a device capable of updating firmware, and a firmware update system in accordance with dynamic recognition of an update environment capable of meeting such a need.

10-1757417 (B1), July 12, 2017

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above-mentioned problems, and it is an object of the present invention to provide a method and apparatus for automatically updating an update device of various network types, A method of updating a firmware according to dynamic recognition of environment, a device capable of updating firmware, and a firmware updating system.

The present invention also relates to a method for determining the update device according to the degree of priority given dynamically according to the characteristics of each network among update devices of a plurality of network types and enabling the update of the firmware through the determined update device, A firmware update method according to the present invention, a device capable of firmware update, and a firmware update system.

According to another aspect of the present invention, there is provided a method of updating a firmware in a device, the firmware being embedded in the device, An update method, a firmware updatable device, and a firmware update system.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory and are not restrictive of the invention, unless further departing from the spirit and scope of the invention as defined by the appended claims. It will be possible.

According to one aspect of the present invention, a firmware update method performed by a device capable of firmware update includes the steps of: attempting to recognize a first update device connected to a first network; attempting to recognize a second update device connected to a second network; 1 determining whether the update device and the second update device recognize the firmware and updating the firmware based on the firmware version information received from each update device, and updating the firmware through the corresponding network of the determined update device .

In the above firmware update method, the first network is a serial communication network, and the second network is an Ethernet or a Wi-Fi communication network.

The firmware update method may further include a step of attempting to recognize a third update device connected to the third network, and the step of determining the update device may further include a step of determining, as the first update device to the third update device, The first priority degree corresponding to the update device, the second priority degree corresponding to the second update device, and the third priority degree corresponding to the third update device are calculated, and the first priority degree, the second priority degree, And an update device having the highest priority degree among the third priority degrees as an update device to update the firmware.

In the above firmware update method, the priority degree is calculated according to the usability weight, the connection delay weight, and the error rate weight of the corresponding network, and the usable weight, the connection delay weight and the error rate weight are calculated based on the connection attempt or data It is updated according to transmission and reception.

In the above-described firmware update method, the step of attempting to recognize the first update device connected to the first network may include transmitting the connection request command through the serial communication to the first update device, and transmitting the latest firmware version information Recognizing an updateable first update device upon receipt of a response including the first update device, and attempting to recognize a second update device connected to the second network includes receiving a broadcast packet for searching the second update device through Ethernet or WiFi communication, And recognizes the updatable second update device upon receipt of the response packet including the latest firmware version information stored in the second update device.

In the above firmware update method, updating the firmware through the corresponding network of the determined update device may include receiving the firmware and the hash code from the update device, temporarily storing the received firmware in the memory, And if the calculated hash code is equal to the received hash code, then the temporarily stored firmware data is recorded in the firmware area of the nonvolatile memory.

A device capable of firmware update according to an aspect of the present invention includes a communication unit capable of data communication through a first network, a second network, and a third network, a storage unit including a nonvolatile memory storing firmware of the device, The first updating device connected to the first network, the second updating device connected to the second network, and the third updating device connected to the third network respectively try to recognize the first updating device, the second updating device and the third updating device And a control unit for determining an update device to update the firmware based on whether or not it is recognized and the firmware version information received from each update device and updating the firmware of the storage unit through a communication interface corresponding to the determined update device of the communication unit.

In the above-described device capable of updating the firmware, in order to determine the update device to update the firmware, the control unit determines that the first update device to the third update device A first priority degree, a second priority degree corresponding to the second updating device, and a third priority degree corresponding to the third updating device, and calculates a first priority degree, a second priority degree and a third priority degree The update device having the highest priority level is determined as an update device to update the firmware.

In the above-described device capable of updating the firmware, the priority degree is calculated according to the availability weight, the connection delay weight, and the error rate weight of the corresponding network, and the usable weight, connection delay weight, And is updated in accordance with data transmission / reception.

Wherein the first network is a serial communication network and the second network is an Ethernet or a Wi-Fi communication network, and in order to recognize a first update device connected to the first network, Recognizes the updatable first update apparatus upon receiving a response including the latest firmware version information stored in the first update apparatus, recognizes the first update apparatus updatable by the second update apparatus connected to the second network, The control unit transmits a broadcasting packet for searching for the second updating device through Ethernet or Wi-Fi communication, and updates the receiving packet according to the reception of the response packet including the latest firmware version information stored in the second updating device The second update device And expression.

A firmware update system according to an aspect of the present invention includes a device capable of updating the firmware, a first update device connectable to the device through a first network, a second update device connectable to the device via a second network, 3 network, wherein the device receives the firmware from one update device in accordance with the network connection with the first update device, the second update device, or the third update device, and updates the built-in firmware do.

The firmware update method, the device capable of updating the firmware and the firmware update system according to the dynamic recognition of the update environment according to the present invention as described above automatically recognize the update devices of various network types that can be accessed, So that the built-in firmware can be updated.

In addition, the firmware update method, the device-updateable device and the firmware update system according to the dynamic recognition of the update environment according to the present invention as described above may be applied to a plurality of network- It is possible to determine an update device in accordance with the determined update device and make firmware update possible through the determined update device.

In addition, the firmware update method, the device capable of updating the firmware, and the firmware update system according to the dynamic recognition of the update environment according to the present invention, as described above, It is possible to perform unified management of the built-in firmware while updating the firmware.

The effects obtained by the present invention are not limited to the above-mentioned effects, and other effects not mentioned can be clearly understood by those skilled in the art from the following description will be.

1 is a diagram illustrating an exemplary firmware update system in accordance with the present invention.
2 is a block diagram illustrating an exemplary configuration of a device capable of performing an update of embedded firmware.
3 is a view showing a control flow for dynamically selecting one update device among the update devices of various network types capable of firmware update to update the firmware.
4 is a diagram showing a priority determination table stored in a device executing a firmware updater.

The above and other objects, features and advantages of the present invention will become more apparent from the following detailed description of the present invention when taken in conjunction with the accompanying drawings, in which: It can be easily carried out. In the following description, well-known functions or constructions are not described in detail since they would obscure the invention in unnecessary detail. Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a diagram illustrating an exemplary firmware update system in accordance with the present invention.

1, a firmware update system includes one or more firmware updateable devices 100, one or more update devices 200, 300, 400, one or more gateways 500, 600, and various types of networks 700 .

1, one or more firmware updateable devices 100 are devices capable of updating the firmware of the built-in nonvolatile memory 131 through various types of network 700 that can be connected .

The device 100 may have a variety of communication interfaces to access a communication network such as serial, Ethernet, Wi-Fi, Bluetooth, Zigbee, etc., as well as an Internet network. In particular, the device 100 may be connected to the update devices 200, 300, 400 through various types of communication networks 700 to dynamically recognize the updateable network environment and update the embedded firmware over the optimized network have.

The device 100 may be a portable or stationary device, for example, a mobile phone, a smart phone, a device connectable to a network, an IoT device, or the like. Alternatively, the device 100 may be a device of a prototype being developed on / off-line, a built-in development board of a prototype, or the like.

The device 100 will be described in detail below with reference to FIG.

The network 700 configured in the firmware update system may include various types of networks and the various types of networks 700 are networks that can be accessed by the device 100 and are at least available for firmware updates.

One type of network (hereinafter, referred to as a 'first network') is a one to one directly connected to the firmware updatable device 100, and may be, for example, a network capable of serial communication. The first network 701 allows firmware to be updated through serial communication such as UART, SPI, SDIO, and the like. The first network 701 may be a serial communication (e. G., In System Programming) for debugging used in product development.

Another type of network (hereinafter referred to as a " second network ") is a local area network. The second network 703 may be an Ethernet communication network, a Wi-Fi communication network, or the like, which enables data communication between a plurality of devices or devices within a certain space or area.

Another type of network (hereinafter referred to as a " third network ") is a broadband network. The third network 705 allows data communication between wired, wireless, and combinations thereof among various devices or devices within a wide area (e.g., a country or the world). The third network 705 may be, for example, an Internet network (network) or a mobile communication network provided by a mobile communication provider. The mobile communication network may be included in the Internet network.

Another type of network (hereinafter referred to as a " fourth network ") is a personal area network. The fourth network 707 enables data communication on the device or device within the personal space area. The fourth network 707 may be, for example, a Bluetooth communication network, a Zigbee communication network, or the like.

The update devices 200, 300, and 400 are devices capable of updating the firmware stored in the device 100. [ Each of the update devices can be connected to any of the networks to update the firmware of the device 100.

For example, one update device (hereinafter, referred to as a 'first update device') may be connected to the device 100 via the first network 701 and accordingly update the firmware of the device 100. The first update device 200 may be a personal computer having a serial communication (first network 701), a notebook PC, a tablet PC, or a verification device capable of debugging when developing a product.

(Hereinafter referred to as a second update device) is connected to the device 100 via the second network 703 and can update the firmware of the device 100 accordingly. The second update device 300 may be a personal computer, a notebook PC, a tablet PC, or a local server or a device manager used for development, which can perform Ethernet communication or Wi-Fi communication.

Another update device (hereinafter referred to as a 'third update device') is connected to the device 100 through the third network 705 and can update the firmware of the device 100 accordingly. The third update device 400 may be a personal computer, a notebook computer, a management server, or the like capable of Internet communication. The third update device 400 may be a cloud server recognized as a single server by the device 100 on the Internet.

The device 100 capable of firmware update is connected to the first update device 200, the second update device 300 and / or the third update device 400 via the respective networks 701, 703, 705, 707, It is possible to update the built-in firmware by using the firmware which is connected and received from a specific update device.

The gateways 500 and 600 are devices for connecting different networks. One gateway 500 (hereinafter, referred to as a 'first gateway') connects the second network 703 and the third network 705 to convert communication packets from the Ethernet or Wi-Fi into communication packets in the Internet network, And converts a communication packet of the Internet network into an Ethernet or a Wi-Fi communication packet.

Another gateway 600 (hereinafter referred to as a 'second gateway') connects the fourth network 707 and the third network 705 to convert communication packets from Bluetooth or ZigBee into communication packets of the Internet network And converts the communication packet of the Internet network into a communication packet of Bluetooth or ZigBee.

Here, the first update device 200, the second update device 300, and the third update device 400 may be synchronized with each other via the network 700. For example, the first update device 200, the second update device 300, and the third update device 400 may be connected to the network 700 to receive firmware corresponding to the latest firmware version from another update device And stores it together with the firmware version information. An update device not connected to the network 700 or not synchronized with the network 700 may store firmware versions different from those of the other update devices.

2 is a block diagram illustrating an exemplary configuration of a device 100 capable of performing an update of embedded firmware.

Referring to FIG. 2, a device 100 capable of updating firmware includes a communication unit 110, a storage unit 130, an input unit 150, an output unit 170, and a control unit 190. Depending on the design example, some of the blocks shown in FIG. 2 may be omitted and other blocks not shown may be further included in the device 100.

Referring to FIG. 2, the communication unit 110 performs data communication through the network 700. The communication unit 110 may transmit and receive various data to and from a device or a device connected to the first network 701, the second network 703, and the third network 705, .

The communication unit 110 includes a first communication interface 111 capable of transmitting and receiving data through the first network 701, a second communication interface 110 capable of transmitting and receiving data through the second network 703, And a third communication interface 115 capable of transmitting and receiving data through the third network 703 and the fourth network 707 and further through the third network 705.

The first communication interface 111 may include circuitry or logic for a UART, SPI, SDIO, ISP, etc. (e.g., a communication chipset, a communication chipset or a function thereof may be embedded in the controller 190, And can transmit / receive a serial signal to / from the first updater 200 through serial communication. The first communication interface 111 may transmit data of the received serial signal to the controller 190 and may transmit the data received from the controller 190 to the first updater 200 as a serial signal.

The second communication interface 113 may be a circuit or logic for Ethernet communication and / or Wi-Fi communication, etc. (e.g., a communication chipset, a communication chipset or a function thereof may be embedded in the controller 190 according to a design example) And can transmit and receive data to and from the second update device 300 and other devices through an Ethernet and a Wi-Fi communication network.

The second communication interface 113 is connected to the third network 705 via the second network 703 (using the first gateway 500) and is connected to the third update device 400 or other devices And data can be transmitted and received.

The third communication interface 115 may be a circuit or logic for Bluetooth and / or ZigBee communication, etc. (e.g., a communication chipset, a communication chipset or a function thereof may be embedded in the controller 190 according to a design example) And can exchange data with devices on the personal area network through the Bluetooth or Zigbee communication network. The third communication interface 115 may transmit and receive data to and from the third update device 400 or other devices connected to the third network 705 (Internet) via the second gateway 600.

As such, the device 100 may include various types of communication interfaces and may be connected to other devices or devices through various networks 700, and may be embedded in various devices or devices connected to various types of networks 700 The firmware can be updated dynamically.

The storage unit 130 stores various data and programs including the nonvolatile memory 131 and the volatile memory 133. [ The storage unit 130 includes one or more nonvolatile memories 131 for storing at least firmware (programs).

The nonvolatile memory 131 stores version information of the firmware and the stored firmware. The firmware stored in the nonvolatile memory 131 may be loaded at the boot time of the device 100 to control the device 100. [ The nonvolatile memory 131 may further include an area for temporarily storing firmware to be updated.

The specific memory area of the nonvolatile memory 131 may be specified as a firmware area in advance and may be recognized by the controller 190. In addition, the specific memory area of the non-volatile memory 131 may be specified as a temporary update area in which firmware to be updated is temporarily stored, and the controller 190 may recognize or set it.

The firmware may represent the entire program used in the device 100 or may represent a part of the updatable program. An update control object (program) is embedded in the firmware according to the design example, or the update control object (program) is configured separately from the updateable firmware part.

The non-volatile memory 131 of the storage unit 130 further stores a priority table. The priority determination table stores the priority degree score calculated according to the characteristics of each network for each firmware updateable network (or an update device connected to the network).

The device 100 may be configured to include both a firmware area and a temporary update area that are driven at boot time in a single nonvolatile memory 131 or may be configured to include firmware in one of two nonvolatile memories 131 And store the updated firmware in the other non-volatile memory 131. [ The firmware used at the start (driving) is stored in the non-volatile memory 131 together with the version information.

The volatile memory 133 can store temporary data, programs, and the like. For example, the volatile memory 133 may store various temporary data, a part such as a program, and the like.

The input unit 150 receives a user input of the device 100. The input unit 150 may receive input of a touch panel, a touch pad, a button, a mouse, an electronic pen, a setting pin, a switch, and the like, and may transmit the received input to the controller 190. Through the input unit 150, the user can provide various inputs necessary for controlling the device 100. [

For example, the user can preset or fix the priority among update devices through the input unit 150. [ Accordingly, the controller 190 can update the firmware by being connected to the update device in preference to other update devices according to the preset priority. Alternatively, the user can set to dynamically calculate the priority among update devices via the input unit 150. [

The output unit 170 includes a display such as an LCD and an LED, a light emitting diode, a speaker, a buzzer, and the like, and outputs various data. The output unit 170 converts the audio data or video data received from the control unit 190 into a corresponding audio signal or video signal and outputs the audio signal or the video signal to a speaker, a buzzer, a display, and / or a light emitting diode.

The control unit 190 controls the device 100. The control unit 190 includes at least one execution unit and loads firmware or the like stored in the storage unit 130 into the execution unit and controls the device 100 according to the program. The control unit 190 represents or includes a CPU, an MPU, a microcomputer, a central processing unit, and the like.

The control unit 190 may load the firmware and perform the function defined according to the firmware in conjunction with the input unit 150 and the output unit 170. [ In addition, the controller 190 recognizes various update devices that can be updated according to the loading of the firmware (in particular, the update control object) by loading the firmware, and the firmware of the specific update device is recognized as the firmware of the non- It is possible to update the firmware area built in the flash memory 131.

The controller 190, which loads and executes the firmware, can perform the function designated by the updating device and after updating if necessary.

The main control performed by the control unit 190 with respect to the firmware update will be described in more detail with reference to FIG. 3 and FIG.

3 is a view showing a control flow for dynamically selecting one update device among the update devices of various network types capable of firmware update to update the firmware.

The control flow of FIG. 3 is performed by the device 100, and preferably by the control unit 190 loading and executing the program (update control program) of the storage unit 130. FIG. The update control program may be part of the firmware or may be separate. The update control program may be a boot program that is executed at boot time.

First, the control unit 190 loads an update control program and starts (S100) according to an update update input that the device 100 is powered on or input through the input unit 150. [

The control unit 190 attempts to recognize the first update device 200 connected to the first network 701 through the first communication interface 111 of the communication unit 110 in step S101 .

For example, the control unit 190 transmits a serial command (for example, a connection request command) of the format promised to the first update apparatus 200 through the serial communication of the first communication interface 111, Through the serial communication of the first communication interface 111.

The response data received from the first update device 200 includes the latest firmware version information held by the first update device 200.

In this manner, the control unit 190 transmits a connection request command of a predetermined format to the first update apparatus 200 in order to recognize the first update apparatus 200 connected to the first network 701, and receives the response And recognizes the first update device 200 accordingly.

Recognition attempts may be attempted multiple times. For example, if the control unit 190 does not receive the response in the previous recognition attempt, the control unit 190 may attempt recognition until a specified number of times (for example, five times).

The control unit 190 updates the entry corresponding to the first update device 200 of the priority determination table in accordance with the recognition attempt and connection.

Referring to FIG. 4, the priority determination table is stored in the non-volatile memory 131 of the storage unit 130.

The priority determination table stores the weight of each item, the connection status, the score of the calculated priority degree, the firmware version information, and the like of each item according to the update device. Items to be used for calculating the priority degree score may include transmission speed, reliability, security, stability, availability, connection delay, error rate, etc., and each item can be expressed by a weight score.

The transmission rate may be a score given according to the transmission speed of the network connected between the updating device and the device 100. [ The reliability may be a score given according to whether the data integrity of the communication protocol used between the updating device and the device 100 is maintained and whether a retransmission mechanism is mounted. The security may be a score given according to the distance between the update device and the device 100. [ The stability may be a score given according to the wired or wireless type of the network. The transmission rate, reliability, security, and stability scores may be fixed in advance and the score may be a weighted score that is weighted up / down based on score 1.

The availability, connection delay and error rate can be continuously updated according to the connection attempt or connection. The availability score is a score calculated by the number of recognition attempts (the number of connection requests). The connection delay is a score calculated according to the delay time between the responses in the connection request. The error rate is a score calculated according to retransmission, timeout, and other errors when exchanging data between the update device and firmware.

The availability, connection delay and error rate scores are also weighted scores that are weighted up and down based on score 1 and are continually updated.

As can be seen in the example of FIG. 4, the prioritization table includes two entries of the first update device 200 and one third update device 300, Entry. One of the third update device entries is an entry used in connecting to the third update device 400 via the second network 703 (Ethernet or Wi-Fi etc.) and the other entry is used in the fourth network 707 (Bluetooth or the like) connected to the third update device 400. The third update device 400 is an entry used when the second update device 400 is connected to the third update device 400 via Bluetooth.

Referring again to FIG. 3, the controller 190 updates the first update device entry of the priority table in the first update device recognition attempt procedure (S101). For example, the control unit 190 changes the held firmware version information of the first update device entry to the latest firmware version information included in the response. Also, the control unit 190 updates the availability of the entry, the connection delay and the error rate score.

For example, the control unit 190 calculates a current availability score based on the score 1 based on the number of recognition attempts, and calculates an expected value of the availability score stored in the entry (an average value calculation formula or a currently calculated availability score A high weighted calculation formula) is calculated based on the current recognition attempt and stored in the entry.

Also, the controller 190 calculates a current connection delay score reflecting the delay time from the connection request (connection request command) to the response to the connection request. The control unit 190 calculates a connection delay score reflecting the current connection delay time according to a predetermined calculation formula (an average value calculation formula or a calculation formula that places a higher weight on the current calculated connection delay score) with the connection delay score of the entry And stores it in the entry.

In addition, the control unit 190 detects an error with respect to data received from the first updating device 200 (at S101 or S111) to calculate a current error rate score. The control unit 190 calculates an error rate score reflecting the current error rate according to a predetermined calculation formula (an average value calculation formula or a formula for placing a higher weight on the currently calculated error rate score) with the error rate score of the entry and stores it in the entry.

As the score of each item is updated, the control unit 190 calculates the score of the priority degree of the first updating device 200 based on the score of each item, and outputs the score of the calculated priority degree to the corresponding entry of the priority table . For example, the control unit 190 may calculate the priority degree score as an average value of the sum of the weighted scores of the respective items.

The control unit 190 calculates a priority degree to which the scores are reflected according to the availability weight, the connection delay weight and the error rate weight according to the corresponding network (further, the transmission speed, reliability, security, stability score). The usability weight, the connection delay weight, and the error rate weight are data (points) updated according to a connection attempt or data transmission / reception in the corresponding network. The calculation of the priority and score of the entry corresponding to the first update device 200 may be performed in the recognition process (S101) of the first update device 200 or thereafter.

The controller 190 sets the connection state of the corresponding entry of the priority determination table as connection or unconnected according to whether the first updating device 200 recognizes the connection.

Also, the control unit 190 attempts to recognize the second update device 300 connected to the second network 703 (S103).

For example, the controller 190 may control the second update device (e.g., the first update device 300) using the local IP address of the second update device 300 (e.g., a local server or a device manager) 300) through the second communication interface 113 to the Ethernet or Wi-Fi communication network. The broadcasting packet may be a UDP broadcasting packet or an ICMP broadcasting packet (for example, a PING packet). The second update device 300 is a device directly connected to the second network 703.

The control unit 190 receives the response packet for the broadcasting packet and recognizes the second update device 300 by receiving the second communication interface 113. [ The response packet may include the latest firmware version information stored in the second update device 300.

Recognition attempts may be attempted multiple times. For example, if the control unit 190 does not receive the response in the previous recognition attempt, the control unit 190 may attempt recognition until a specified number of times (for example, five times).

The control unit 190 updates the entry corresponding to the second update device 300 of the priority determination table in accordance with the recognition attempt.

In the second updating device recognition attempting process (S103), the control unit 190 updates the second updating device entry of the priority table. For example, the control unit 190 changes the held firmware version information of the second update device entry to the latest firmware version information included in the response. Also, the control unit 190 updates the availability of the entry, the connection delay and the error rate score.

Since the calculation method of the availability, the connection delay and the error rate score has already been described with respect to the entry of the first updating device 200, the contents thereof are omitted here.

As the score of each item is updated, the control unit 190 calculates the priority score of the second update device 300 based on the score of each item, and outputs the calculated score of priority to the corresponding entry of the priority table . For example, the control unit 190 may calculate the priority degree score as an average value of the sum of the weighted scores of the respective items.

The control unit 190 calculates a priority degree to which the scores are reflected according to the availability weight, the connection delay weight and the error rate weight according to the corresponding network (further, the transmission speed, reliability, security, stability score). The usability weight, connection delay weight, and error rate weight are updated according to the connection attempt or data transmission / reception in the corresponding network. The priority degree and the score of the entry corresponding to the second update device 300 may be calculated in the recognition process (S103) of the second update device 300 or thereafter.

The controller 190 sets the connection state of the corresponding entry in the priority determination table as connection or non-connection according to whether the second update apparatus 300 recognizes the connection.

The control unit 190 also attempts to recognize the third update apparatus 400 connected to the third network 705 (S105). The control unit 190 can recognize the third update device 400 of the Internet through the gateways 500 and 600 of the two kinds of networks (the second network 703 and the fourth network 707).

The control unit 190 controls the connection with the third update device 400 through the second communication interface 113 to recognize the third update device 400 through the first gateway 500 of the second network 703. [ . For example, the control unit 190 verifies the certificate by handshaking with the third update device 400 through the second communication interface 113, generates a session key to configure a secure communication channel, To the MQTT (Message Queuing Telemetry Transport).

The control unit 190 transmits an MQTT Keep-alive packet (connection request) to the third update device 400 through the second communication interface 113 and receives the response to attempt to recognize the third update device 400 . The response packet may include the latest firmware version information stored in the third update device 400.

Recognition attempts may be attempted multiple times. For example, if the control unit 190 does not receive the response in the previous recognition attempt, the control unit 190 may attempt recognition until a specified number of times (for example, five times).

The control unit 190 updates the entry corresponding to the third update apparatus 400 (via the second network 703) of the priority determination table in accordance with the recognition attempt.

The control unit 190 updates the third update device entry (via the second network 703) of the priority determination table in the third update device recognition attempting process (S105). For example, the control unit 190 changes the held firmware version information of the third update device entry (via the second network 703) to the latest firmware version information included in the response. Also, the control unit 190 updates the availability of the entry, the connection delay and the error rate score.

Since the calculation method of the availability, the connection delay and the error rate score has already been described with respect to the entry of the first updating device 200, the contents thereof are omitted here.

As the score of each item is updated, the control unit 190 calculates the priority degree score of the third update apparatus 400 (via the second network 703) based on the score of each item, The score is stored in the corresponding entry in the priority table.

For example, the control unit 190 may calculate the priority degree score as an average value of the sum of the weighted scores of the respective items. The control unit 190 calculates a priority degree to which the scores are reflected according to the availability weight, the connection delay weight and the error rate weight according to the corresponding network (further, the transmission speed, reliability, security, stability score). The usability weight, connection delay weight, and error rate weight are updated according to the connection attempt or data transmission / reception in the corresponding network. The calculation of the priority degree and the score of the entry corresponding to the third update device 400 (via the second network 703) may be performed in the recognition process (S105) of the third update device 400 or thereafter .

The control unit 190 sets the connection status of the corresponding entry in the priority determination table as connection or unconnected depending on whether the third update apparatus 400 (via the second network 703) is recognized.

The control unit 190 controls the third update unit 400 via the third communication interface 115 to recognize the third update unit 400 through the second gateway 600 of the fourth network 707. In order to recognize the third update unit 400 through the second gateway 600 of the fourth network 707, (E.g., a UDP broadcasting packet) for retrieving the second gateway 600, and receives the response from the second gateway 600. [ The control unit 190 then sets a communication channel capable of transmitting and receiving data through the second gateway 600 and the fourth network 707 and tries to establish a communication channel to be connected to the third update apparatus 400.

The control unit 190 receives a response to the TCP-based communication channel connection request from the third update apparatus 400 via the fourth network 707 and transmits the third update message via the fourth network 707, The device 400 may attempt to recognize it. The response packet may include the latest firmware version information stored in the third update device 400.

Recognition attempts may be attempted multiple times. For example, if the control unit 190 does not receive the response in the previous recognition attempt, the control unit 190 may attempt recognition until a specified number of times (for example, five times).

The control unit 190 updates the entry corresponding to the third update apparatus 400 (via the fourth network 707) of the priority determination table in accordance with the recognition attempt.

In the third update device recognition attempting process (S105), the control unit 190 updates the third update device entry (via the fourth network 707) of the priority determination table. For example, the control unit 190 changes the held firmware version information of the third update device entry (via the fourth network 707) to the latest firmware version information included in the response. Also, the control unit 190 updates the availability of the entry, the connection delay and the error rate score.

The calculation method of the availability, the connection delay and the error rate score with respect to the entry of the first updating device 200 has already been described, and the contents thereof are omitted here.

As the score of each item is updated, the control unit 190 calculates the priority degree score of the third update apparatus 400 (via the fourth network 707) based on the score of each item, The score is stored in the corresponding entry in the priority table.

For example, the control unit 190 may calculate the priority degree score as an average value of the sum of the weighted scores of the respective items. The control unit 190 calculates a priority degree to which the scores are reflected according to the availability weight, the connection delay weight and the error rate weight according to the corresponding network (further, the transmission speed, reliability, security, stability score). The usability weight, connection delay weight, and error rate weight are updated according to the connection attempt or data transmission / reception in the corresponding network. The calculation of the priority degree and the score of the entry corresponding to the third update device 400 (via the fourth network 707) may be performed in the recognition process (S105) of the third update device 400 or thereafter .

The control unit 190 sets the connection status of the corresponding entry in the priority determination table as connection or unconnected depending on whether the third update apparatus 400 (via the fourth network 707) is recognized.

Here, the recognition attempt (S101) of the first update device 200, the recognition attempt (S103) of the second update device 300, and the recognition attempt (S105) of the third update device 400 may be performed independently of each other And there may not be a specified precedence relation. For example, the recognition process of the second update device 300 may precede the recognition process of the first update device 200 or may occur after the recognition process of the third update device 400.

Thereafter, the controller 190 determines whether the firmware version information currently stored in the nonvolatile memory 131 of the storage unit 130 is the optimal firmware version (S107). For example, the control unit 190 can check whether the current firmware version is the latest version by comparing the firmware version information of each entry of the updated priority determination table with the current firmware version information in the nonvolatile memory 131.

If the version of the current firmware of the non-volatile memory 131 is equal to or higher than the firmware version of each update device of the entry, the controller 190 ends the firmware update without performing the firmware update, (S200).

If it is not the latest version, the controller 190 determines an update device to update the firmware of the non-volatile memory 131 of the storage unit 130 (S109). The control unit 190 determines whether or not the first update device 200 is recognized, whether the second update device 300 is recognized, whether the third update device 400 is recognized, and the firmware version information received from each update device And determines an update device to update the firmware of the storage unit 130 based on the updated firmware.

Specifically, the control unit 190 sets the connection state (whether or not it recognizes) of each updating device in the priority determination table in the determination of the updating device (S109) or in the previous recognition process, and calculates the priority degree.

The control unit 190 controls the update devices (for example, the first update device 200 and the second update device 300) having a (highest) version (latest version) higher than the firmware of the current nonvolatile memory 131, And the third update device 400), the update device having the highest priority and the connected state is determined as an update device to update the firmware.

The intermediate connection network type (second network 703, fourth network 707) may also be determined according to the priority degree when it is determined to be the third update device 400. [

The control unit 190 may determine the update device according to a preset priority through the input unit 150 or the like instead of determining the update device according to the comparison of the calculated degree of priority. In this case, the update apparatus having the highest firmware version and a fixed priority can be determined as an update apparatus to be updated.

As the update device to be updated is determined, the controller 190 updates the firmware through the network corresponding to the determined update device (S111).

The control unit 190 receives the firmware data and the hash code calculated for the firmware data through the corresponding network of the determined updating device through the corresponding communication interface and stores the received firmware data in the nonvolatile memory 131 ) In the temporary update area of the storage device.

When all the firmware data and the hash code are received from the corresponding network, the controller 190 calculates a hash code for the temporarily stored firmware data, and when the calculated hash code is equal to the received hash code, And stores the stored firmware data in the firmware area of the nonvolatile memory 131 to update the firmware.

Depending on the network associated with the determined update device, the communication protocol used and the firmware sourcing method may be different. For example, the third update device 400, such as a cloud server, may transmit firmware to the device 100 according to a request and response based on a hypertext transfer protocol (HTTP) communication protocol. The cloud server can transmit the firmware information or the firmware to the device 100 in association with other storage servers according to the firmware information, the download request, and the like.

As the firmware is updated, the device 100 can be rebooted and run with the updated firmware to perform the designated function.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the invention. The present invention is not limited to the drawings.

100: device
110:
111: first communication interface 113: second communication interface
115: Third communication interface
130:
131: nonvolatile memory 133: volatile memory
150: input unit 170: output unit
190:
200: first update device 300: second update device
400: third update device 500: first gateway
600: second gateway
700: Network
701: first network 703: second network
705: third network 707: fourth network

Claims (11)

A firmware update method for updating firmware of a non-volatile memory built in a device by the device,
Attempting to recognize a first update device connected to the serial communication through the serial communication;
Attempting to recognize a second update device connected to the local area network through the local area network;
Determining an update device to update the firmware of the device based on whether the first update device and the second update device are recognized and the firmware version information of the firmware received from each update device and stored in each update device; And
And updating the firmware through the determined update device,
The attempting to recognize the first update device connected to the serial communication may include transmitting a connection request command through the serial communication to the first update device and receiving a response including the latest firmware version information stored in the first update device Recognizes an updatable first update device,
Wherein the attempting to recognize a second update device connected to the local area network comprises transmitting a broadcasting packet for searching the second update device through the local area network and transmitting the latest firmware version information stored in the second update device Recognizing an updateable second update device upon receipt of an included response packet,
How to update the firmware. The method according to claim 1,
Wherein the step of attempting recognition of the first update device connected to the serial communication comprises calculating a score of availability score and connection delay score in accordance with serial communication with the first update device, Stores the availability score and connection delay score calculated in the entry corresponding to the device,
Wherein the step of attempting recognition of a second update device connected to the local area network comprises the steps of calculating an availability score and a connection delay score according to communication with the second update device in accordance with the local area network, Stores the availability score and connection delay score calculated in the entry corresponding to the updating device,
Wherein the step of determining an update device to update the firmware of the device includes the step of determining the availability score and the connection delay score of the entry corresponding to the first update device of the priority determination table and the correspondence with the second update device of the priority determination table Determining an update device based on the availability score and the connection delay score of the entry,
How to update the firmware. The method according to claim 1,
And attempting to recognize a third update device connected to the broadband network,
The determining step of the updating device determines whether or not the first updating device corresponds to the first updating device, the second updating device corresponds to the third updating device, and the third updating device corresponds to the third updating device, A third priority degree corresponding to the update device is calculated and an update device having the highest priority among the first priority degree, the second priority degree and the third priority degree is determined as an update device to update the firmware ,
How to update the firmware. The method of claim 3,
The priority degree is calculated according to the availability score, connection delay score and error rate score of the corresponding network,
The availability score, the connection delay score and the error rate score are updated according to the connection attempt to the corresponding network or the data transmission / reception,
How to update the firmware. 3. The method of claim 2,
The device may be a prototype device for development or an embedded development board,
Wherein the availability score of the first updating device is calculated based on the number of recognition attempts for the first updating device and the connection delay score of the first updating device is calculated from the connection request command received from the connection request command output to the first updating device via serial communication Lt; RTI ID = 0.0 > response,
How to update the firmware. 6. The method of claim 5,
Updating the firmware through the determined updating device includes receiving the firmware and the hash code from the updating device, temporarily storing the received firmware in the memory, calculating the hash code for the temporarily stored firmware data, and comparing the calculated hash code and the received hash If the codes are the same, temporarily store the firmware data in the firmware area of the nonvolatile memory,
How to update the firmware. As a device capable of firmware update,
A communication unit capable of data communication through a serial communication, a local area network, and a broadband network;
A storage unit including a nonvolatile memory for storing firmware of the device; And
A second update device connected to the local area network, and a third update device connected to the broadband network, respectively, through the communication section, Determines an update device to update the firmware on the basis of whether or not the third update device is recognized and the firmware version information of the firmware received from each update device and stored in each update device and updates the firmware of the storage device through the determined update device And a control unit,
Wherein the control unit transmits a connection request command through the serial communication to the first update device and recognizes the first update device that can be updated according to the reception of the response including the latest firmware version information stored in the first update device, Transmits a broadcasting packet for searching for the second updating device through the local area network, and recognizes the updatable second updating device upon receipt of a response packet including latest firmware version information stored in the second updating device doing,
device. 8. The method of claim 7,
In order to determine an update apparatus to update the firmware, the control unit may be configured to update the first update apparatus corresponding to the first update apparatus, the first update apparatus corresponding to the second update apparatus, The second priority degree, the third priority degree corresponding to the third update device, and updates the firmware having the highest priority among the first priority degree, the second priority degree and the third priority degree to the firmware Determining which update device to update,
device. 9. The method of claim 8,
The priority degree is calculated according to the availability score, connection delay score and error rate score of the corresponding network,
The availability score, the connection delay score and the error rate score are updated according to the connection attempt to the corresponding network or the data transmission / reception,
device. 8. The method of claim 7,
The control unit calculates the number of usable points and the degree of connection delay according to serial communication with the first updater during the recognition attempt of the first updater and outputs the score to the first updater of the priority table stored in the storage unit Stores the availability score and connection delay score calculated in the corresponding entry and calculates the availability score and the connection delay score according to the communication according to the local area network with the second updating device during the recognition attempt of the second updating device And stores the availability score and the connection delay score calculated in the entry corresponding to the second updating device in the priority table, and stores the availability score and the connection delay value of the entry corresponding to the first updating device in the priority table Score and a score for the second updating device of the priority table Availability and connection points of the entry delay even further based on a score that determines the update unit to update the firmware, that
device. As a firmware update system,
A device capable of updating the firmware of claim 7;
A first update device connectable to the device through a serial communication;
A second update device connectable to the device through a local area network; And
And a third update device connectable to the device via a broadband network,
Wherein the device receives firmware from one update device in accordance with a communication connection with the first update device, the second update device, or the third update device and updates the built-
Firmware update system.

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