CN110691173B - Image transmission device, image transmission method and image transmission system - Google Patents
Image transmission device, image transmission method and image transmission system Download PDFInfo
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- CN110691173B CN110691173B CN201811241556.4A CN201811241556A CN110691173B CN 110691173 B CN110691173 B CN 110691173B CN 201811241556 A CN201811241556 A CN 201811241556A CN 110691173 B CN110691173 B CN 110691173B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
- H04N1/32—Circuits or arrangements for control or supervision between transmitter and receiver or between image input and image output device, e.g. between a still-image camera and its memory or between a still-image camera and a printer device
- H04N1/32358—Circuits or arrangements for control or supervision between transmitter and receiver or between image input and image output device, e.g. between a still-image camera and its memory or between a still-image camera and a printer device using picture signal storage, e.g. at transmitter
- H04N1/324—Circuits or arrangements for control or supervision between transmitter and receiver or between image input and image output device, e.g. between a still-image camera and its memory or between a still-image camera and a printer device using picture signal storage, e.g. at transmitter intermediate the transmitter and receiver terminals, e.g. at an exchange
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
- H04N1/32—Circuits or arrangements for control or supervision between transmitter and receiver or between image input and image output device, e.g. between a still-image camera and its memory or between a still-image camera and a printer device
- H04N1/32561—Circuits or arrangements for control or supervision between transmitter and receiver or between image input and image output device, e.g. between a still-image camera and its memory or between a still-image camera and a printer device using a programmed control device, e.g. a microprocessor
- H04N1/32566—Circuits or arrangements for control or supervision between transmitter and receiver or between image input and image output device, e.g. between a still-image camera and its memory or between a still-image camera and a printer device using a programmed control device, e.g. a microprocessor at the transmitter or at the receiver
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
- H04N1/32—Circuits or arrangements for control or supervision between transmitter and receiver or between image input and image output device, e.g. between a still-image camera and its memory or between a still-image camera and a printer device
- H04N1/32561—Circuits or arrangements for control or supervision between transmitter and receiver or between image input and image output device, e.g. between a still-image camera and its memory or between a still-image camera and a printer device using a programmed control device, e.g. a microprocessor
- H04N1/32571—Details of system components
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- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Facsimiles In General (AREA)
Abstract
The present disclosure relates to an image transmission device, which includes a central processing unit, and a wireless communication module, a key, a universal serial bus connector and an internal memory unit connected thereto. The USB connector is plugged into a computer with portable software, the computer cannot access the internal memory unit, and the portable software is copied from an external source to the computer and executed by the computer. The wireless communication module is wirelessly connected with the receiving device. When the key is started, the key transmits a signal to the central processing unit, and the central processing unit transmits an instruction to the portable software for execution so as to control the screen mirror reflection, so that a plurality of images are transmitted from the computer to the receiving device through the universal serial bus connector and the wireless communication module. Therefore, the safety and the application diversity can be effectively improved, and the function of completing the screen mirroring by one key is realized.
Description
Technical Field
The present disclosure relates to image transmission devices, and more particularly, to an image transmission device and an image transmission method.
Background
In recent years, various external devices have been widely used to assist display projection. For example, when a computer is used as a presentation, the screen must be mirrored on the projector so that the content displayed on the computer screen can be projected on the projection screen in real time. Conventionally, D-SUB, DVI, or HDMI cable is used to connect computers and projectors to achieve projection. However, this approach is limited to wired connections.
In view of the above, image transmission devices have been developed to achieve wireless connection between a computer and a screen/projector. Conventionally, such image transmission devices include an image storage unit for storing related software programs and/or drivers. When the image transmission Device is connected to a computer of a user, the computer recognizes the image transmission Device as a Universal Serial Bus (USB) Mass Storage Device (Mass Storage Device) so that the user can copy, install or execute software on the image transmission Device.
However, this implementation still has at least two disadvantages. First, for data security reasons, more and more organizations (e.g., general companies, banks, government agencies, etc.) disable the functionality of Universal Serial Bus (USB) mass storage devices in employee computers. In this case, the above-described image transmission device becomes completely useless. Second, since the driver or software on the image transmission device needs to be installed and updated, the USB disk of the image transmission device must be writable. Since software viruses or malicious programs may be written onto the image transmission device, a security risk is created.
Therefore, there is a need for an improved image transmission device and an improved image transmission method that can overcome the drawbacks of the prior art.
Disclosure of Invention
It is a primary object of the present disclosure to provide an image transmission device and an image transmission method, which solve and improve at least one of the above-mentioned disadvantages of the prior art.
Another objective of the present disclosure is to provide an image transmission device and an image transmission method, which can effectively improve security and application diversity by using an internal storage unit that is inaccessible to a computer or other electronic devices.
Another objective of the present disclosure is to provide an image transmission device and an image transmission method, in which the portable software is copied from an external source to a computer, and is not bound to the image transmission device, and the acquisition and the subsequent update can be realized through a safe and virus-free pipeline. Furthermore, the function of completing the screen mirroring by one key can be realized by matching the key of the image transmission device.
Another objective of the present disclosure is to provide an image transmission device and an image transmission method, wherein the image transmission device can be a USB device compatible with the human interface device. The image transmission device does not need to use any USB mass transmission device, and no software virus or malicious program exists in the image transmission device. In companies that disable the usb mass transfer device function in the clerk's computer, the clerk can smoothly use the image transfer device of the present disclosure.
To achieve the above object, a preferred embodiment of the present disclosure provides an image transmission device, including: a central processing unit; a wireless communication module connected with the central processing unit; a key connected with the central processor; a universal serial bus connector connected with the central processor; and an internal memory unit connected with the central processing unit; the USB connector is inserted into a computer with portable software, the computer cannot access the internal memory unit, the portable software is copied from an external source to the computer and executed by the computer, the wireless communication module is wirelessly connected with a receiving device, when the key is started, the key transmits a signal to the CPU, and the CPU transmits an instruction to the portable software for execution to control a screen mirror so that a plurality of images are transmitted from the computer to the receiving device through the USB connector and the wireless communication module.
To achieve the above object, a preferred embodiment of the present disclosure provides an image transmission method, including: (a) pairing an image transmission device and a receiving device; (b) copying a portable software to a computer; (c) executing the portable software on the computer; (d) inserting the image transmission device into the computer, wherein the computer cannot access an internal storage unit of the image transmission device; (e) starting a key of the image transmission device to transmit an instruction from the image transmission device to the portable software; and (f) the portable software executes the instruction to control a screen mirror so as to enable a plurality of images to be transmitted from the computer to the image transmission device and then to be transmitted from the image transmission device to the receiving device.
To achieve the above object, a preferred embodiment of the present disclosure provides an image transmission system, including: a computer, wherein a portable software is copied to and executed by the computer from an external source; a receiving device; and an image transmission device, wherein the image transmission device comprises: a central processing unit; a wireless communication module connected with the central processing unit and wirelessly connected with the receiving device; a key connected with the central processor; a universal serial bus connector connected with the central processor and inserted into the computer; and an internal memory cell, link with the central processing unit, and the computer can't visit the internal memory cell; when the key is started, the key transmits a signal to the central processing unit, and the central processing unit transmits an instruction to the portable software to execute so as to control a screen mirror, so that a plurality of images are transmitted from the computer to the receiving device through the universal serial bus connector and the wireless communication module.
Drawings
Fig. 1 is a block diagram of an image transmission device according to a preferred embodiment of the present disclosure.
Fig. 2 is a schematic diagram showing the pairing of the image transmission device and the receiving device through USB insertion.
FIG. 3 is a schematic diagram showing the connection between the computer and the receiving device, USB flash drive, intranet and Internet.
FIG. 4 is a schematic diagram showing the image transmission device plugged into a computer.
Fig. 5A is a schematic diagram showing an image transmission device, a computer, a receiving device and a display device connected to the receiving device.
FIG. 5B is a schematic diagram showing the computer screen image mirrored to the display device after the key shown in FIG. 5A is pressed and activated by the user.
Fig. 6 is a flowchart illustrating an image transmission method according to a preferred embodiment of the present disclosure.
Description of reference numerals:
1: image transmission device
11: central processing unit
12: wireless communication module
13: push-button
14: universal serial bus connector
15: internal memory cell
2: computer with a display
3: receiving apparatus
31: connector with a locking member
4: display device
5: USB flash disk
6: internal network
7: internet network
8: hand (W.E.)
81: finger(s)
S10-S40: step (ii) of
Detailed Description
Some exemplary embodiments that incorporate the features and advantages of the present disclosure will be described in detail in the specification which follows. It is to be understood that the disclosure is capable of various modifications in various embodiments without departing from the scope of the disclosure, and that the description and drawings are to be regarded as illustrative in nature, and not as restrictive.
Referring to fig. 1 to 5B, fig. 1 is a block diagram showing an architecture of an image transmission device according to a preferred embodiment of the present disclosure, fig. 2 is a schematic diagram showing a pairing of the image transmission device and a receiving device through USB plug-in, fig. 3 is a schematic diagram showing a connection between a computer and the receiving device, a USB flash disk, an intranet and the internet, fig. 4 is a schematic diagram showing the image transmission device plugged into the computer, fig. 5A is a schematic diagram showing the image transmission device, the computer and the receiving device and a display device connected to the receiving device, and fig. 5B is a schematic diagram showing a screen of the computer after a key shown in fig. 5A is pressed and activated by a user and then mirrored to the display device. As shown in fig. 1 to 5B, the image transmission device 1 according to the preferred embodiment of the present disclosure includes a central processing unit 11, a wireless communication module 12, a key 13, a Universal Serial Bus (USB) connector 14, and an internal storage unit 15. The wireless communication module 12 is connected to the central processing unit 11, and may be a wireless fidelity (Wi-Fi) communication unit, but not limited thereto. The key 13 is connected to the cpu 11, and the key 13 may be a physical key, or a software key, that is, a physical key actually provided, or a virtual key or a touch key, implemented in a touch or biological identification manner, but not limited thereto, where the virtual key may be directly displayed on the computer screen, or may be both a virtual key and a touch key, for example, a virtual key displayed on a touch screen, which may be clicked with a mouse, or may be directly touched with a finger, or not limited thereto. The USB connector 14 is connected to the CPU 11, wherein the USB connector 14 can be, for example but not limited to, a Micro-USB (Micro-USB) connector, a Mini-USB (Mini-USB) connector, a Type-C (Type-C) USB connector. The internal memory unit 15 is connected to the cpu 11.
The usb connector 14 is plugged into the computer 2 with the portable software. The internal storage unit 15 is Inaccessible to the computer 2, i.e. the internal storage unit 15 is Inaccessible (Inaccessible) to the computer 2. That is, the internal storage unit 15 is not recognized as a disk by the computer 2, and thus the user does not see a recognized or loaded disk on the operating system. However, the image transmission device 1 is recognized by the system as a Human Interface Device (HID), or even a universal serial bus human interface device (USB-HID), i.e. a device like a mouse or a keyboard, and its driver is automatically set by the operating system on the computer 2. By using the internal storage unit 15 that cannot be accessed by the computer 2 or other electronic devices, the image transmission apparatus 1 of the present disclosure can effectively improve security and application diversity.
According to the idea of the present disclosure, the manner of disabling the computer 2 from accessing the internal storage unit 15 can be implemented by the following method, but not limited thereto: one is to use an internal memory unit 15 which does not conform to the specification or protocol of a mass storage device of a universal serial bus; the other is to provide the internal storage unit 15 with a disk format that cannot be read by the operating system of the computer 2, for example, to provide the internal storage unit 15 with a disk format ext4 or HFS
Operating system, or providing an internal storage unit 15 with a disk format NTFS
An operating system, etc.; of course, the internal memory unit can be isolated by hardware15 are not physically connected to the computer 2 or the internal storage unit 15 is shielded from the operating system in a software-hidden manner.
The portable software is copied from an external source to the computer 2 and executed by the computer 2. According to the concept of the present disclosure, the portable software can be simply copied to the computer 2 and directly executed without the authority of the system administrator. In the company that prohibits the staff member from installing the software in the computer 2, the staff member can still directly use the portable software and cooperate with the image transmission device 1 to realize the image transmission. Since the portable software is copied from an external source to the computer 2, it is not necessary to bind the image transmission device 1, and both the acquisition and the subsequent update can be realized through a safe and virus-free pipeline.
The wireless communication module 12 is wirelessly connected to the receiving apparatus 3. In some embodiments, the receiving device 3 may be a projector, but is not limited thereto. When the key 13 is activated, the key 13 transmits a signal to the cpu 11, and the cpu 11 transmits an instruction to the portable software for controlling a screen mirror so that a plurality of images are transmitted from the computer 2 to the image transmission device 1 via the usb connector 14 and then to the receiving device 3 via the wireless communication module 12. In some embodiments, the receiving device 3 is connected to the display device 4, and the images are synchronously displayed on the screen of the computer 2 and the display device 4, so as to realize synchronous screen mirroring between the computer 2 and the display device 4. Therefore, the image transmission device 1 of the present disclosure can implement the function of completing the screen mirroring with one key.
Please refer to fig. 1 and fig. 2 again. In some embodiments, the connection information of the receiving device 3 is stored in the internal storage unit 15, and the connection information includes, but is not limited to, an SSID of a wireless fidelity network and a password. Before the image transmission device 1 of the present disclosure is inserted into a computer for screen mirroring, the usb connector 14 of the image transmission device 1 is inserted into the receiving device 3 in advance, so that the cpu 11 and the receiving device 3 are paired. When the central processing unit 11 is paired with the receiving device 3, the central processing unit 11 writes the connection information into the internal storage unit 15. In addition, the receiving device 3 can be connected to the display device 4 through a connector 31, and can display connection information on the display device 4, wherein the connection information includes, but is not limited to, an SSID and a password of the wifi network.
Please refer to fig. 1 and fig. 3 again. External sources include, according to the concepts of the present disclosure, a receiving device 3, a universal serial bus Flash Drive (USB Flash Drive)5, an internal network (Intranet)6, or the Internet (Internet) 7. The internal Network 6 includes a closed area Network and a Network Attached Storage (NAS) installed in the closed area Network, but not limited thereto. A Network Attached Storage (NAS) is a public cloud concept if it is installed on the internet 7. The internet 7 includes public clouds, private clouds, community clouds, hybrid clouds, and the like. As for the usb flash disk 5, a read-only usb flash disk provided by the enterprise-internal security manager is preferred, but not limited thereto. The portable software may simply be downloaded via an internet address (URL) or copied to the computer 2 by simple copying and pasting. In the present disclosure, the portable software can be copied and executed without any installation action and administrator authority. In addition, the portable software can communicate with the computer 2 via a universal serial bus human interface device (USB-HID) communication protocol, such as commands, status and screen mirroring data, which can be communicated via the communication protocol.
Further, the portable software may run in the background of the computer 2. When the image transmission device 1 is plugged into the computer 2, the portable software starts to communicate with the image transmission device 1 through the USB-HID communication protocol. The communication referred to herein includes sending a command to the cpu 11 of the image transmission device 1 to initiate a wireless connection between the wireless communication module 12 and the receiving device 3.
Please refer to fig. 1, fig. 5A and fig. 5B. When the wireless connection between the wireless communication module 12 and the receiving device 3 is successfully established, the user can press the key 13 of the image transmission device 1 with the finger 81 of the hand 8 to activate the key 13 as shown in fig. 5B, so that the cpu 11 controls the screen to mirror, and the image displayed by the computer 2 is transmitted to the receiving device 3 through the wireless communication module 12. The receiving device 3 may include the display device 4 itself or be connected to the display device 4 through a connector 31, and the image displayed by the computer 2 is synchronously displayed on the display device 4, but not limited thereto.
Please refer to fig. 6 in conjunction with fig. 1, which is a flowchart illustrating an image transmission method according to a preferred embodiment of the present disclosure. As shown in fig. 1 and 6, the image transmission method according to the preferred embodiment of the present disclosure includes the following steps. First, in step S10, the image transmission device 1 and the reception device 3 are paired. Next, in step S20, the portable software is copied to the computer 2. Then, in step S30, the portable software is executed on the computer 2. Then, in step S40, the image transmission device 1 is inserted into the computer 2. Then, in step S50, the key 13 of the image transmission device 1 is activated, so that a command is transmitted from the image transmission device 1 to the portable software. Then, in step S60, the portable software executes the command to control the screen mirror, so that the images are transmitted from the computer 2 to the image transmission device 1, and then transmitted from the image transmission device 1 to the receiving device 3. Specifically, the image transmission device 1 further includes a central processing unit 11, a wireless communication module 12, a universal serial bus connector 14, and an internal storage unit 15. The wireless communication module 12, the key 13, the usb connector 14 and the internal memory unit 15 are connected to the cpu 11. The computer 2 cannot access the internal storage unit 15.
According to the concept of the present disclosure, the cpu 11 controls the screen mirror so that the image displayed by the computer 2 is transmitted to the receiving device 3 via the wireless communication module 13. The receiving device 3 preferably includes a display device 4, and the images displayed on the computer 2 are synchronously displayed on the display device 4.
In step S10, during the pairing process between the image transmission device 1 and the receiving device 3, the usb connector 14 of the image transmission device 1 is preferably inserted into the receiving device 3 for data exchange, and the cpu 11 writes the connection information of the receiving device 3 into the internal storage unit 15.
In summary, the present disclosure provides an image transmission apparatus and an image transmission method, so as to solve and improve at least one of the disadvantages of the prior art. The internal storage unit which cannot be accessed by a computer or other electronic devices is adopted, so that the safety and the application diversity can be effectively improved. Meanwhile, since the portable software is copied to the computer from an external source, the portable software does not need to be bound with an image transmission device, and the acquisition and the subsequent update can be realized through a safe and virus-free pipeline. Furthermore, the function of completing the screen mirroring by one key can be realized by matching the key of the image transmission device. In addition, the image transmission device of the present disclosure can be a USB device compatible with the human interface device, which does not need to use any USB mass transmission device, and no software virus or malicious program exists in the image transmission device. In companies that disable the usb mass transfer device function in the clerk's computer, the clerk can smoothly use the image transfer device of the present disclosure.
Although the present disclosure has been described in detail with respect to the above embodiments, it will be apparent to those skilled in the art that various modifications can be made without departing from the scope of the invention as defined in the appended claims.
Claims (15)
1. An image transmission device, comprising:
a central processing unit;
a wireless communication module connected with the central processing unit;
a key connected with the central processor;
a universal serial bus connector connected with the central processor; and
an internal memory unit connected with the CPU;
when the key is started, the key transmits a signal to the central processing unit, and the central processing unit transmits an instruction to the portable software to execute so as to control a screen mirror, so that a plurality of images are transmitted from the computer to the receiving device through the universal serial bus connector and the wireless communication module.
2. The image transmitting device as claimed in claim 1, wherein a connection information of the receiving device is stored in the internal storage unit.
3. The image transmission device as claimed in claim 1, wherein the key is a physical key or a software key, and wherein the software key is a virtual key displayed on a screen.
4. The image transmitting device as claimed in claim 1, wherein the external source comprises the receiving device, a USB flash drive, an internal network or an Internet.
5. The image transmission device as claimed in claim 4, wherein the internal network comprises a closed area network and a network connection storage device installed on the closed area network.
6. The image transmission device as claimed in claim 4, wherein the USB flash drive is a read-only USB flash drive.
7. The image transmission device as claimed in claim 4, wherein the internet includes a public cloud, a private cloud, a community cloud and a hybrid cloud.
8. The image transmitting device as claimed in claim 1, wherein the receiving device is connected to a display device, and the plurality of images are synchronously displayed on a screen of the computer and the display device.
9. An image transmission method includes the steps:
(a) pairing an image transmission device and a receiving device;
(b) copying a portable software to a computer;
(c) executing the portable software on the computer;
(d) inserting the image transmission device into the computer, wherein the computer cannot access an internal storage unit of the image transmission device;
(e) starting a key of the image transmission device to transmit an instruction from the image transmission device to the portable software; and
(f) the portable software executes the instruction to control a screen mirror, so that a plurality of images are transmitted from the computer to the image transmission device and then transmitted to the receiving device by the image transmission device.
10. The image transmission method according to claim 9, wherein the image transmission device further comprises:
a central processor connected with the key and the internal memory unit;
a wireless communication module connected with the central processing unit; and
a universal serial bus connector connected with the central processing unit.
11. The image transmission method according to claim 10, wherein the USB connector is plugged into the computer, the CPU sends the command, and the images displayed by the computer are transmitted to the receiving device via the wireless communication module.
12. The image transmission method according to claim 11, wherein the receiving device includes a display device, and the plurality of images displayed by the computer are synchronously displayed on the display device.
13. The image transmission method according to claim 10, wherein in the step (a), the cpu writes connection information of the receiving device into the internal memory unit.
14. The image transmission method according to claim 10, wherein the portable software is copied from an external source to the computer.
15. An image transmission system, comprising:
a computer, wherein a portable software is copied from an external source to the computer and executed by the computer;
a receiving device; and
an image transmission device, wherein the image transmission device comprises:
a central processing unit;
a wireless communication module connected with the central processing unit and wirelessly connected with the receiving device;
a key connected with the central processor;
a universal serial bus connector connected with the central processor and inserted into the computer; and
an internal memory unit connected with the CPU and inaccessible to the computer;
when the key is started, the key transmits a signal to the central processing unit, and the central processing unit transmits an instruction to the portable software to execute so as to control a screen mirror, so that a plurality of images are transmitted to the receiving device from the computer through the universal serial bus connector and the wireless communication module.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US16/216,537 US10491760B1 (en) | 2018-07-05 | 2018-12-11 | Image transmission device, image transmission method, and image transmission system |
| EP18212158.2A EP3591982A1 (en) | 2018-07-05 | 2018-12-13 | Image transmission device, image transmission method, and image transmission system |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US201862694208P | 2018-07-05 | 2018-07-05 | |
| US62/694,208 | 2018-07-05 |
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| Publication Number | Publication Date |
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| CN110691173A CN110691173A (en) | 2020-01-14 |
| CN110691173B true CN110691173B (en) | 2021-08-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811241556.4A Active CN110691173B (en) | 2018-07-05 | 2018-10-24 | Image transmission device, image transmission method and image transmission system |
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| CN (1) | CN110691173B (en) |
| TW (1) | TWI684894B (en) |
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| JP5353591B2 (en) * | 2009-09-15 | 2013-11-27 | 株式会社リコー | Projector, projector system, control method, and control program |
| CN103141087A (en) * | 2011-09-14 | 2013-06-05 | 巴可有限公司 | Electronic tool and methods for meetings |
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| TW200713053A (en) * | 2005-09-28 | 2007-04-01 | Lite On Technology Corp | Method and computer system for securing backup data from damage by virus and hacker program |
| CN101542498A (en) * | 2007-07-30 | 2009-09-23 | 日立软件工程株式会社 | Information processing device and method, computer-readable recording medium, and external storage medium |
| CN201765835U (en) * | 2010-09-02 | 2011-03-16 | 吴丽娟 | USB externally connected device |
| CN103854678A (en) * | 2012-12-03 | 2014-06-11 | 奇扬网科股份有限公司 | USB flash drive with plug and show function |
Also Published As
| Publication number | Publication date |
|---|---|
| TWI684894B (en) | 2020-02-11 |
| TW202006592A (en) | 2020-02-01 |
| CN110691173A (en) | 2020-01-14 |
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