TWI631855B - Apparatus and method for wireless projection - Google Patents

Abstract

A wireless projection device includes a memory, a network interface, a scanning module, a wireless access point, a USB jack, and a wireless projection module, wherein the memory stores a pairing information, and the network interface is A regional network establishes a network connection, and the scanning module is connected to the network interface and sends a device discovery protocol to the regional network. The wireless projection module is respectively connected with the memory, the scanning module, the wireless access point, and the USB plug. The holes are electrically connected. When a USB flash drive is inserted into the USB jack, the wireless projection module and pairing information will be automatically written into the USB flash drive; when the USB flash drive with data has been inserted into an electronic device, the electronic device will check if the pairing information is correct. And executing the wireless projection module when the pairing information is correct, so that the electronic device establishes a network connection with the wireless projection device through the network interface or the wireless access point.

Description

Wireless projection device and method thereof

The present invention relates to a wireless projection device, and more particularly to a wireless projection device that establishes a connection with a user's electronic device through a pairing method.

With the popularity of wireless networks and the advancement of transmission technologies, the frequency of using wireless projection devices is increasing in conferences conducted in enterprises. The wireless projection device has a wireless access point (Wireless AP), can establish a wireless network connection with the electronic device of the user (presenter), and transmit the briefing data of the electronic device to the wireless projection device, and then transmit to a display. The device plays.

The first figure is a schematic diagram of a multi-party briefing conference using a wireless projection device. The figure includes a wireless projection device 10 and a plurality of electronic devices 12. The wireless projection device 10 has a wireless access point, and a wireless preset is preset therein. In the projection module, the electronic device 12 has a wireless internet function, and a wireless projection module is stored therein. When an electronic device 12 establishes a connection between the wireless access point and the wireless projection device 10 and executes the wireless projection module, the briefing data of the electronic device 12 will pass through the The line projection device 10 outputs to a display device 14 for playback. The wireless projection module is preset in the wireless projection device 10 and installed in the electronic device 12 through a network download, a CD or a USB flash drive.

In general, wireless projection modules are developed by wireless projection device manufacturers. Participants usually do not know the brand of the wireless projection device in the conference room, and do not install the wireless projection module inside the electronic device in advance. . For convenience and security considerations, USB flash drives are usually placed in the conference room. Participants only need to insert the USB flash drive into the electronic device they carry, they can connect to the wireless access device of the wireless projection device, and install, The wireless projection module is executed.

For conferences held within the company, most of the participants are internal employees, and the employees usually connect their electronic devices to the corporate network when they enter the company every day. In this case, if they want to participate in the conference, they will use USB. When the flash drive is inserted into its electronic device, the enterprise employee must manually interrupt the connection between the electronic device and the enterprise network, switch to the wireless access point of the wireless projection device, and then establish a connection with the wireless projection device. The above process of switching and connecting to a wireless network usually takes a lot of meeting time.

Since the conventional wireless projection device does not have the function of recognizing the identity of the user, even the electronic device of the enterprise employee who has been connected to the enterprise network still needs to manually disconnect the enterprise network in the manual internal meeting. Switching to the wireless access point of the wireless projection device, and then establishing a connection with the wireless projection device, the process often results in Waste of meeting time.

The main object of the present invention is to provide a wireless projection device that can directly connect an electronic device that has been connected to a regional network to a wireless projection device without interrupting the connection with the regional network.

Another object of the present invention is to provide a wireless projection method for directly connecting an electronic device that has been connected to a regional network to a wireless projection device without interrupting the connection with the regional network.

In order to achieve the above object, the wireless projection device of the present invention comprises a memory, a network interface, a scanning module, a wireless access point, a USB jack and a wireless projection module. The memory stores a pairing information, the network interface is connected with a regional network, the scanning module is connected with the network interface and a device exploration protocol is issued to the regional network, and the USB jack is in a USB. When the pen drive is inserted, the wireless projection module and pairing information are written to the USB flash drive.

Preferably, the pairing information includes a token, an IP address, a product ID, a unique identifier, and a service setting identifier (SSID). The electronic device further includes a discovery module. When the electronic device cannot be connected to the network address provided by the pairing information, the search module automatically searches for the scanning module of the wireless projection device. The device explores the agreement and establishes a network connection.

Yet another preferred, the device discovery protocol can be a group The Discovery Agreement for the Domain Name System (mDNS) or an exploration agreement for Avahi; the regional network can be a corporate regional network, a school regional network, or an institutional regional network; the network interface can be a B A network interface and a wired network connection or a wireless network interface with the local area network and a wireless network connection with the local area network.

The wireless projection method of the present invention comprises: first inserting the USB flash drive into the electronic device; determining whether the product identification code of the pairing information is correct; if yes, the electronic device executes the wireless projection module; Stopping the execution of the projection program; the electronic device is connected to the wireless projection device by using the network location of the pairing information; and then determining whether the electronic device is successfully connected to the wireless projection device through the network location, and if so, proceeding a step; the electronic device provides the command to the wireless projection device for identification; if the identifier is correctly identified, the wireless projection module starts wireless projection, and if not, stops executing the projection program.

In the above step, when the electronic device cannot successfully connect to the wireless projection device through the network location, the following steps are performed: the search module of the electronic device automatically explores the scan module issued by the wireless projection device. The device discovery protocol, if the device discovery protocol is discovered, establishes a network connection according to the agreement and the wireless projection device, and the electronic device provides the identifier to the wireless projection device for identification. The discovery protocol includes a new network address provided by the wireless projection device, and the electronic device establishes a connection using the new network and the wireless projection device.

The specific embodiment adopted by the present invention will be as follows The embodiments and drawings are further described.

10‧‧‧Wireless projection device

12‧‧‧Electronic devices

14‧‧‧Display device

2‧‧‧Wireless projection device

21‧‧‧ memory

210‧‧‧ Pairing information

212‧‧‧ warrant

214‧‧‧Network address

216‧‧‧Product ID

218‧‧‧ unique identification code

219‧‧‧Service setting identifier

23‧‧‧Web interface

231‧‧‧Ethernet interface

232‧‧‧Wireless network interface

25‧‧‧Scan module

251‧‧‧Device Exploration Agreement

26‧‧‧USB flash drive

27‧‧‧Wireless access point

28‧‧‧USB jack

29‧‧‧Wireless projection module

4‧‧‧Regional Network

41‧‧‧Wired network

42‧‧‧Wireless access point

43‧‧‧Electronic devices

43a‧‧‧ Visitor's electronic device

431‧‧‧Exploration Module

The first figure is a schematic diagram of a multi-party briefing conference using a wireless projection device.

The second figure shows a schematic diagram of a wireless projection device of the present invention.

The third and fourth figures show schematic diagrams of the wireless projection method of the present invention.

Please refer to the second figure, which shows a schematic diagram of the wireless projection device of the present invention. As shown, the wireless projection device 2 of the present invention includes a memory 21, a network interface 23, a scan module 25, a wireless access point 27, a USB jack 28, and a wireless projection module 29.

The memory 21 internally stores a pairing information 210, including a token 212 (Token), a network address 214, a product identification code 216, a unique identification code 218, and a service setting identifier 219; the network interface 23 It may be that an Ethernet interface 231 and a regional network 4 establish a wired connection, or a wireless network interface 232 and the regional network 4 establish a wireless network connection.

The local area network 4 can be a regional network of a company, a regional network of a school, or a regional network of an organization. The network 4 of the area provides a wired network 41 or a wireless access point 42. The regional network 4 The internal personnel's electronic device 43 (such as a notebook) can be connected through the wired network 41 or the wireless access point 42 The network module 23 is connected to the network interface 23 and sends a device discovery protocol 251 (Device Discovery Protocol) to the area network 4, such as a multicast domain name system (mDNS) discovery protocol or a Avahi's discovery protocol; the wireless access point 27 can establish a wireless network connection with the electronic device 43; the wireless projection module 29 can execute a wireless projection program, and insert a wireless projection module when a USB flash drive 26 is inserted into the USB socket. Group 29 and pairing information 210 are written to the USB flash drive 26.

The wireless projection device 2 of the present invention is usually installed in a conference room, so that the conference room can prepare more than one USB flash drive 26 in advance, or the participant can carry the USB flash drive 26 by himself. During the meeting, the USB flash drive 26 is first inserted into the USB jack 28 of the wireless projection device 2, the wireless projection module 29 and the pairing information 210 are written into the USB flash drive 26, and the USB flash drive 26 is pulled out, and then It can be inserted into the electronic device 43 of the participant, download and install the pairing information 210 and execute the wireless projection device 29 to start the wireless projection presentation.

Generally, in the conference held in the local area network 4, the participant may be a visitor outside the regional network 4 or a person inside the regional network 4, and the external visitor's electronic device 43a may pass through the wireless projection device. The wireless access point 27 of 2 is connected to the network, and the internal device electronic device 43 is usually already connected to the local area network 4 before the meeting. Therefore, the wireless projection method of the present invention can enable the electronic device 43 of the person in the area network 4 to directly perform wireless projection without interrupting the network connection, switching to the wireless access point 27 of the wireless projection device 2, and the like. . The embodiment is described below.

Please refer to the third and fourth figures, which are flowcharts of the wireless projection method of the present invention. The steps include: first inserting the USB flash drive into the electronic device (S301), and determining the product identification code of the pairing information. Is it correct (S302), if yes, the electronic device executes the wireless projection module (S303), otherwise, the execution is stopped (S304), and the electronic device uses the network location of the pairing information to connect to the wireless projection The device (S305) determines whether the electronic device is successfully connected to the wireless projection device through the network location (S306), and if so, proceeds to a next step (S307), and the electronic device provides the command to the wireless projection device The identification is performed (S307); whether the verifier is correct (S308), and if the recognition is correct, the wireless projection module starts wireless projection (S309), otherwise, the execution of the step (S304) is stopped.

In the above step (S306), when the electronic device cannot successfully connect to the wireless projection device through the network location, the following steps are performed: the exploration module of the electronic device automatically explores the scanning mode of the wireless projection device. A device discovery protocol (S3061) issued by the group determines whether the device discovery protocol is found (S3062), and if so, establishes a network connection according to the agreement and the unique identification code (Unique ID) of the pairing information and the wireless projection device. (S3063), performing the step (S307), otherwise, determining whether the electronic device is connected to the wireless network (WiFi) provided by the pairing device (S3063), and if yes, stopping the step (S304), and vice versa. The electronic device switches the wireless network by using the service setting identifier (SSID) of the pairing information (S3064), and determines whether the electronic device has been connected to the wireless network according to the service setting identifier (S3065), and if so, executes step (S303), otherwise, the execution of the step (S304) is stopped. The discovery protocol includes a new network address provided by the wireless projection device, and the electronic device establishes a connection by using the new network and the wireless projection device, and the unique identification code identifies the wireless projection device. A unique identification code to prevent the electronic device from being connected to other wireless projection devices.

For visitors outside the local area network, since their electronic devices are usually not connected to the local area network, the wireless projection method of the present invention only needs to provide a USB flash drive that has been written into the wireless projection module and pairing information. Having the guest insert the USB flash drive into his or her own electronic device, and after determining that the product identification code of the pairing information is correct, the network location of the wireless projection module and the pairing information is connected to the wireless projection device, and then After the identification of the token, wireless projection can be started.

Referring again to the second figure, for the personnel inside the area network 4, since their electronic device 43 is usually connected to the local area network 4, the present invention only needs to provide the written wireless projection module. 29 and the USB flash drive 26 of the pairing information 210, allowing the internal personnel to insert the USB flash drive 26 into their own electronic device 43. After determining that the product identification code 216 of the pairing information 210 is correct, the exploration mode of the electronic device 43 is utilized. The group 431 automatically explores the device discovery protocol 251 issued by the scanning module 25 of the wireless projection device 2, and establishes a network connection according to the agreement, the unique identification code (Unique ID) of the pairing information, and the wireless projection device 2, and then passes the order. After the identification of the symbol 212, wireless projection can be started.

If the electronic device 43 of the person inside the area network 4 cannot When the connection module 432 and the wireless projection device 2 are automatically connected, the wireless projection module 29 will automatically determine whether the electronic device 43 is connected to the wireless network provided by the pairing information 210 (as described in step S3063). If the electronic device 43 is connected to the wireless network provided by the pairing information 210 but cannot establish a connection with the wireless projection device 2, indicating that there is a problem with the system, the execution of the steps is stopped. If the electronic device 43 is not connected to the wireless network provided by the pairing information 210, the service setting identifier 219 in the pairing information 210 is used to automatically assist the electronic device 32 to switch to the wireless network provided by the wireless projection device 2, and then execute Step S303 is to complete the subsequent wireless projection step.

As can be seen from the above description, the internal personnel of the regional network do not need to manually disconnect the regional network connection, and then switch to the wireless access point of the wireless projection device, so that the wireless projection device can be connected, so Waste of meeting time.

The features and spirit of the present invention will be more apparent from the detailed description of the preferred embodiments. On the contrary, the intention is to cover various modifications and equivalents within the scope of the invention as claimed.

Claims (19)

A wireless projection device includes: a memory storing a pairing information, the pairing information including a token, an IP address, a product ID, and the wireless projection A unique identifier of the device; a network interface that establishes a network connection with a regional network; a scanning module that interfaces with the network interface and issues a device discovery protocol to the regional network a wireless access point; a USB jack for inserting a USB flash drive; and a wireless projection module respectively for the memory, the scanning module, the wireless access point, and the USB jack Sexual connection; when the USB flash drive is inserted into the USB jack, the wireless projection module and the pairing information are automatically written into the USB flash drive; when the USB flash drive having written data is inserted into an electronic device, The electronic device checks whether the pairing information is correct, and executes the wireless projection module when the pairing information is correct, so that the electronic device establishes a network connection through the network interface or the wireless access point and the wireless projection device. The wireless projection device of claim 1, wherein the pairing information further comprises a service setting identification code (SSID) of the wireless projection device. The wireless projection device of claim 2, wherein the electronic device further comprises a discovery module, wherein the electronic device cannot be connected to the paired information. In the case of a network address, the discovery module will automatically explore the device discovery protocol issued by the scanning module of the wireless projection device and establish a network connection. The wireless projection device of claim 3, wherein the device exploration protocol is a discovery protocol of a multicast domain name system (mDNS). The wireless projection device of claim 3, wherein the device exploration agreement is an exploration agreement of Avahi. The wireless projection device of claim 1, wherein the regional network is a regional network of an enterprise. The wireless projection device of claim 1, wherein the regional network is a school regional network. The wireless projection device of claim 1, wherein the network interface is an Ethernet interface and establishes a wired network connection with the regional network. The wireless projection device of claim 1, wherein the network interface is a wireless network interface and establishes a wireless network connection with the regional network. A wireless projection method for a wireless projection device, the wireless projection device comprising: a memory, storing pairing information, the pairing information including a token, an IP address, and a product identification code ( Product ID), a unique identifier of the wireless projection device and a service setting identifier (SSID); a network interface that establishes a network connection with a regional network; a scanning module is connected to the network interface and issues a device discovery protocol to the regional network; a wireless access point; a USB jack for insertion of a USB flash drive; and a wireless projection module And electrically connecting to the memory, the scanning module, the wireless access point and the USB jack; the step of the wireless projection method comprises: a. inserting the USB flash drive into the electronic device, wherein the The USB flash drive has been inserted into the USB jack of the wireless projection device and has written the pairing information; b. determining whether the product identification code of the pairing information is correct, and if so, the electronic device executes the wireless projection module; Conversely, the execution is stopped; c. the electronic device uses the network location of the pairing information to connect to the wireless projection device; d. determines whether the electronic device is successfully connected to the wireless projection device through the network location, and if Step e; e. the electronic device provides the command to the wireless projection device for identification; f. if the identifier is correctly identified, the wireless projection module starts wireless projection, and vice versa, stops execution . The wireless projection method of claim 10, wherein the electronic device further comprises a search module, and when the electronic device cannot successfully connect to the wireless projection device through the network location, performing the following steps: d1 The exploration module of the electronic device automatically explores the wireless projection device a device discovery protocol issued by the scanning module; d2. determining whether the device discovery protocol is found; d3. If yes, establishing a network connection with the wireless projection device according to the agreement, and then performing step e. The wireless projection method of claim 11, wherein the result of the step d2 is no, the following steps are performed: g1. determining whether the electronic device is connected to the wireless network provided by the pairing information (WiFi) ); g2. If yes, stop execution; otherwise, perform the following steps: g3. The electronic device connects to the wireless network (WiFi) by using the service setting identifier (SSID) provided by the pairing information; g4. Whether it is successfully connected to the wireless network (WiFi) specified by the service setting identifier (SSID); g5. If yes, execute step c; otherwise, stop execution. The wireless projection method of claim 11, wherein the discovery protocol comprises a new network address provided by the wireless projection device, the electronic device utilizing the new network address and the The wireless projection device establishes a connection. The wireless projection method of claim 10, wherein the device exploration protocol is a discovery protocol of a multicast domain name system (mDNS). The wireless projection method of claim 10, wherein the device exploration agreement is an exploration agreement of Avahi. The wireless projection side as described in claim 10 Law, where the regional network is a regional network of enterprises. The wireless projection method of claim 10, wherein the regional network is a school regional network. The wireless projection method of claim 10, wherein the network interface is an Ethernet interface and establishes a wired network connection with the regional network. The wireless projection method of claim 10, wherein the network interface is a wireless network interface and establishes a wireless network connection with the regional network.