A controlled switching device and a terminal display device

Abstract

The application provides a controlled switching device and a terminal display device, the controlled switching device comprising: a controlled switching unit, a control unit and a communication unit, wherein the controlled switching unit is electrically connected with the control unit, the controlled switching unit is electrically connected with a first device, a second device and a third device respectively, and the data transmission channel between the first device and the third device and the data transmission channel between the second device and the third device are switched according to the control signal sent by the control unit; the communication unit is electrically connected with the control unit, the communication unit receives an RS232 signal and converts the RS232 signal into a TTL signal and transmits the TTL signal to the control unit; and the control unit generates a control signal according to the received TTL signal. Through the controlled switching device, the switching of the data transmission channel can be realized through a data control signal, the operation convenience of the switching of the data transmission channel is improved, and the application scenarios are enriched.

Description

Technical Field

[0001] This application relates to the field of controlled input / output switching technology, and in particular to a controlled switching device and a terminal display device. Background Technology

[0002] In application scenarios such as window services, when window staff process transactions for customers through window terminal devices, customers may need to view, verify, and / or confirm relevant information. This requires displaying the information on an external display screen (also known as an external screen), or, for example, a queuing system displaying call information on the external screen. Therefore, the external screen needs to be electrically connected not only to the window terminal device (also known as the terminal display device) but also to other devices (such as queuing systems or related office equipment, also known as the device being shared with). The display screen can be switched to the external display screen as needed.

[0003] The current implementation mainly relies on manual switching. When a staff member at the window triggers the switch using a manual switching device (such as a button), the screen display of the device being mirrored can be synchronously switched and displayed on the external screen. However, it cannot be triggered by data control signals, and the terminal display device and the device being mirrored are usually electrically connected to the external screen via VGA or HDMI. When switching manually, the external screen switches automatically, resulting in a poor user experience. Utility Model Content

[0004] The purpose of this application is to provide a controlled switching device and a terminal display device to solve the technical problem in the prior art that screen switching can only be performed manually and the switching process is not perceptible.

[0005] According to one aspect of this application, a controlled switching device is provided, wherein the device includes:

[0006] The controlled switching unit, control unit, and communication unit, wherein,

[0007] The controlled switching unit is electrically connected to the control unit and is electrically connected to the first device, the second device and the third device respectively. According to the control signal sent by the control unit, the controlled switching unit switches the data transmission channel between the first device and the third device and the data transmission channel between the second device and the third device.

[0008] The communication unit is electrically connected to the control unit. The communication unit receives RS232 signals and converts them into TTL signals for transmission to the control unit.

[0009] The control unit generates control signals based on the received TTL signals.

[0010] Optionally, the signals transmitted through the data transmission channel between the controlled switching unit and the third device include LVDS signals and backlight signals.

[0011] Optionally, the device further includes:

[0012] The first conversion drive unit receives a VGA signal or an HDMI signal output by the first device, and converts the VGA signal or HDMI signal into an LVDS signal and a backlight signal, which are then transmitted to the controlled switching unit.

[0013] Optionally, the signal transmitted by the data transmission channel further includes a USB signal, and the controlled switching unit further includes:

[0014] The second controlled switching subunit, wherein...

[0015] Based on the received control signal, the data transmission channels of LVDS signal and backlight signal are switched through the first controlled switching subunit, and the data transmission channel of USB signal is switched through the second controlled switching subunit.

[0016] Optionally, the controlled switching unit further includes:

[0017] Manual control subunit, in which,

[0018] The manual control subunit is connected to an external manual switching device. When the external manual switching device is triggered, a control signal is generated through the manual control subunit.

[0019] According to another aspect of this application, a terminal display device is provided, characterized in that the device comprises:

[0020] The aforementioned controlled switching device and second device, wherein the second device includes: a motherboard, a second conversion drive unit, and a first display screen, wherein,

[0021] The controlled switching unit is electrically connected to the mainboard of the second device;

[0022] The communication unit is electrically connected to the motherboard and receives RS232 signals sent by the motherboard;

[0023] The motherboard is electrically connected to the second conversion driver unit and outputs VGA or HDMI signals to the second conversion unit. The second conversion unit converts the VGA or HDMI signals into LVDS signals and backlight signals and outputs them to the first display screen. The motherboard is electrically connected to the first display screen and transmits USB signals.

[0024] Optionally, the device further includes:

[0025] The third device includes a second display screen, and a controlled switching unit electrically connected to the second display screen to transmit LVDS signals, backlight signals, and USB signals.

[0026] The working principle of this application is as follows:

[0027] The controlled switching device protected in this application can receive RS232 signals including control information via a communication unit, convert them into TTL signals, and transmit them to a control unit. The control unit generates control signals including control commands based on the control information and sends them to the controlled switching unit. The controlled switching unit switches the data transmission channels between the first and third devices and between the second and third devices according to the received control signals, thereby realizing data transmission between the first and third devices or between the second and third devices through data control signals. Furthermore, if LVDS signals and backlight signals are transmitted, seamless switching can be achieved, improving the user experience.

[0028] Compared with the prior art, this application has the following beneficial effects:

[0029] The controlled switching device of this application enables the switching of data transmission channels via data control signals, improving the operational convenience of data transmission channel switching and enriching application scenarios. Attached Figure Description

[0030] Other features, objects, and advantages of this application will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0031] Figure 1 A schematic diagram of a controlled switching device and a terminal display device according to this application is shown.

[0032] The same or similar reference numerals in the accompanying drawings represent the same or similar parts. Detailed Implementation

[0033] The following description, in conjunction with the accompanying drawings, further illustrates the technical concept, specific structure, and resulting technical effects of a controlled switching device and apparatus provided in this application, to fully understand the purpose, features, and effects of this application. The drawings illustrate embodiments and / or optional embodiments of this application. It should be understood that those skilled in the art can modify the embodiments and / or optional embodiments described herein while still achieving the same beneficial effects. Therefore, the embodiments and / or optional embodiments described herein should be understood as illustrative examples of this application and not as limitations thereof.

[0034] like Figure 1The controlled switching device 100 shown in one embodiment of this application includes:

[0035] The controlled switching unit 110, the control unit 120, and the communication unit 130, wherein,

[0036] The controlled switching unit 110 is electrically connected to the control unit 120. The controlled switching unit 110 is electrically connected to the first device, the second device, and the third device respectively. According to the control signal sent by the control unit 120, the control switching unit 110 switches the data transmission channel between the first device and the third device and the data transmission channel between the second device and the third device.

[0037] The communication unit 130 is electrically connected to the control unit 120. The communication unit receives RS232 signals and converts them into TTL signals for transmission to the control unit 120.

[0038] The control unit 120 generates a control signal based on the received TTL signal.

[0039] The controlled switching device 100 receives an RS232 signal containing control information from an external device via a communication unit 130. It converts the RS232 signal into a TTL signal and sends it to the control unit 120. The control unit 120 generates a control signal containing control instructions based on the received TTL signal and sends it to the controlled switching unit 110. The controlled switching unit 110 switches the data transmission channels between the first and third devices and between the second and third devices based on the received control signal. For example, when the controlled switching unit 110 does not receive a control signal, it does not operate and will not switch to either the data transmission channel between the first and third devices, nor to the data transmission channel between the second and third devices; the third device has no data transmission channel. When the controlled switching unit 110 receives a control signal containing a first control instruction, it switches to establish the data transmission channel between the first and third devices. When the controlled switching unit 110 receives a control signal containing a second control instruction, it switches to establish the data transmission channel between the second and third devices. In another example, when the controlled switching unit 110 does not receive a control signal, it is assumed that a data transmission channel has been established between the first device and the third device. When the controlled switching unit 110 receives a control signal including a third control command, it switches to establish a data transmission channel between the second device and the third device. Switching the data transmission channel can be achieved through data control signals, improving the operational convenience of data transmission channel switching and enriching application scenarios.

[0040] In one alternative embodiment, if the externally transmitted signal containing control information is a TTL signal instead of an RS232 signal, then there is no need to configure the communication module 130, and the control unit 120 can receive the externally transmitted TTL signal containing control information.

[0041] In window service application scenarios, the first device can be a screen-sharing device, the second device can be a terminal display device, which includes a first display screen facing the window service personnel, and the third device can be a second display screen that serves as an outward display screen, through which relevant information is displayed to the service personnel.

[0042] Optionally, the signals transmitted through the data transmission channel between the controlled switching unit and the third device include LVDS signals and backlight signals.

[0043] The data transmission channel between the first device and the third device includes a data transmission channel between the first device and the controlled switching unit 110 and a data transmission channel between the controlled switching unit 110 and the third device. The data transmission channel between the second device and the third device includes a data transmission channel between the second device and the controlled switching unit 110 and a data transmission channel between the same controlled switching unit 110 and the third device. In a window service scenario, the first device can be considered as the device being mirrored, the second device can be considered as a terminal display device (the terminal display device includes at least one first display screen facing the window staff), and the third device can be considered as a second display screen facing the service personnel (i.e., an outward-facing display screen). The controlled switching device 100 performs switching according to the received control signal, transmitting the output signal of the device being mirrored or the terminal display device to the second display screen through the corresponding data transmission channel to display the image on the second display screen. Since the display screen shows a noticeable change when switching between VGA or HDMI signals from different sources, resulting in a poor user experience, and the transmission distance of VGA or HDMI signals is limited, in this optional embodiment, the data transmission channel between the controlled switching unit 110 and the second display screen transmits signals including LVDS signals and backlight signals. The backlight signal is used to set the backlight of the liquid crystal display screen to dynamically adjust the backlight of the liquid crystal display screen according to the LVDS signal, so that the user can see a more comfortable picture. In addition, the LVDS signal has a longer transmission distance.

[0044] Optionally, the controlled switching device 100 further includes:

[0045] The first conversion drive unit 140 receives a VGA signal or an HDMI signal output by the first device, and converts the VGA signal or HDMI signal into an LVDS signal and a backlight signal, which are then transmitted to the controlled switching unit.

[0046] The first device typically outputs a VGA or HDMI signal to the display screen. The first conversion drive unit 140 of the controlled switching device 100 can convert the VGA or HDMI signal output by the first device into an LVDS signal and dynamically generate the corresponding backlight signal. The LVDS signal and the backlight signal are then transmitted to the controlled switching unit 110.

[0047] In window service application scenarios, when the output information of the device being screened or the terminal display device is displayed to the staff on the second display screen through the data transmission channel, when the staff needs to verify and confirm the information displayed on the second display screen, their verification and confirmation input information also needs to be transmitted back to the device being screened or the terminal display device through the data transmission channel.

[0048] Optionally, the signal transmitted by the data transmission channel further includes a USB signal, and the controlled switching unit 110 further includes:

[0049] The second controlled switching subunit, wherein...

[0050] Based on the received control signal, the data transmission channels of LVDS signal and backlight signal are switched through the first controlled switching subunit, and the data transmission channel of USB signal is switched through the second controlled switching subunit.

[0051] The controlled switching unit 110, based on received control signals, converts the VGA or HDMI signals output by the first or second device into LVDS and backlight signals via the first conversion drive unit 140 and the first controlled switching subunit. These signals are then transmitted via a data transmission channel to the second display screen for display on the user's screen. Alternatively, the second controlled switching subunit can transmit the USB signals output by the first or second device to the user's screen via the data transmission channel. When the user needs to verify the information displayed on the second display screen, the verification and confirmation input information can be transmitted back to the screen-sharing device or terminal display device via the data transmission channel using a USB signal.

[0052] Optionally, the controlled switching unit 110 further includes:

[0053] Manual control subunit, in which,

[0054] The manual control subunit is connected to an external manual switching device. When the external manual switching device is triggered, a control signal is generated through the manual control subunit.

[0055] The controlled switching device 100 is also compatible with and supports manual switching. The controlled switching unit 110 also includes a manual control subunit, which is connected to an external manual switching device (such as a button). When the external manual switching device is triggered, a control signal can be generated through the manual control subunit to switch the data transmission channels between the first device and the third device, and between the second device and the third device.

[0056] According to another aspect of this application, a terminal display device 10 is also provided, wherein the terminal display device 10 includes:

[0057] The controlled switching device 100 and the second device, wherein the second device includes: a motherboard 200, a second conversion drive unit 300, and a first display screen 400, wherein...

[0058] The controlled switching unit 110 is electrically connected to the mainboard 200 of the second device;

[0059] The communication unit 130 is electrically connected to the motherboard 200 and receives RS232 signals sent by the motherboard 200;

[0060] The motherboard 200 is electrically connected to the second conversion driver unit 300 and outputs VGA or HDMI signals to the second conversion unit 300. The second conversion unit 300 converts the VGA or HDMI signals into LVDS signals and backlight signals and outputs them to the first display screen 400. The motherboard 200 is electrically connected to the first display screen 400 and transmits USB signals.

[0061] The controlled switching device 100 and the second device can be integrated into a single device as a terminal display device 10. The terminal display device 10 includes the controlled switching device 100, a motherboard 200, a second conversion drive unit 300, and a first display screen 400. The terminal display device 10 integrates an operating system and business applications to ensure relevant business processing. The operating system can be Windows, Android, Kylin, Tongxin, etc., and is not limited thereto; any operating system that ensures the normal operation of the business applications is within the scope of this application. The controlled switching device 100 can receive RS232 signals containing control information sent by the motherboard 200, generate control signals including control commands, and control the controlled switching unit 110 to switch to the data transmission channel between the motherboard 200 and the third device, outputting the LVDS signal and backlight signal from the motherboard to the third device; or it can switch to the data transmission channel between the first device and the third device, converting the VGA or HDMI signal output by the first device into an LVDS signal and dynamically generating the corresponding backlight signal, which is then output to the third device. It can also transmit USB signals bidirectionally through the data transmission channel.

[0062] As an example, the controlled switching unit 110 includes a circuit using an A416 controlled bidirectional switcher or an ASW3642 controlled bidirectional switcher for switching LVDS signals and backlight signals. The control unit 120 includes a circuit using a multi-channel ON-OFF triggered MCU chip, which can control the switching of relevant channels of the controlled switching unit 100 by outputting ASCII instructions through the UART serial port. The communication unit 130 includes a circuit using an RS232 / TTL level bidirectional conversion chip (such as MAX232), which converts externally transmitted RS232 signals including control information into TTL signals and sends them to the control unit 120.

[0063] Optionally, the terminal display device 10 further includes:

[0064] The third device includes a second display screen 500, and a controlled switching unit 110 is electrically connected to the second display screen 500 to transmit LVDS signals, backlight signals, and USB signals.

[0065] The terminal display device 10 may also integrate a third device, including a second display screen 500. The terminal display device 10 includes a controlled switching device 100, a motherboard 200, a second conversion drive unit 300, a first display screen 400, and a second display screen 500. The controlled switching unit 110 is electrically connected to the second display screen 500. The controlled switching device 100 can receive RS232 signals containing control information sent by the motherboard 200, generate control signals including control commands, and control the controlled switching unit 110 to switch the data transmission channel between the motherboard 200 and the second display screen 500, outputting the LVDS signal and backlight signal from the motherboard to the second display screen 500. Alternatively, it can switch the data transmission channel between the first device and the second display screen, converting the VGA or HDMI signal output by the first device into an LVDS signal and dynamically generating the corresponding backlight signal, which is then output to the second display screen 500. The data transmission channel can also enable bidirectional USB signal transmission between the second display screen 500 and the motherboard 200, or between the second display screen 500 and the first device.

[0066] The relevant content of the controlled switching device 100, which is not described in the embodiments and / or optional embodiments of the data terminal device 10, is the same as that in the foregoing embodiments and / or optional embodiments. Therefore, it will not be elaborated further here.

[0067] By deploying the controlled switching device, i.e., the terminal display device, including the one described in this application, the data transmission channel can be switched via data control signals, which improves the ease of operation of switching the data transmission channel and enriches the application scenarios.

[0068] It should be noted that the embodiments and / or optional embodiments in this application are only used to illustrate the technical solutions of this application and do not constitute any limitation on this application. Those skilled in the art should understand that any equivalent substitutions or modifications made to the technical solutions and technical content disclosed in this application without departing from the scope of the technical solutions of this application are all within the spirit and scope of the technical solutions of this application and should be included within the protection scope of this application.

[0069] In this application, when terms such as "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," "horizontal," "lateral," and "longitudinal" are used, the indicated orientation and / or positional relationship is based on the orientation and / or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing this application and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation. Furthermore, some of the above terms, in addition to indicating orientation or positional relationship, can also be used to indicate other meanings; for example, the term "upper" can also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this application according to the specific circumstances.

[0070] Furthermore, the terms "installation," "setup," "equipped with," "connection," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection via an intermediate medium; and they can refer to an internal connection between two devices, components, or constituent parts. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0071] Furthermore, the terms "first," "second," etc., are primarily used to distinguish different devices, units, modules, elements, circuits, or components (which may be the same or different in specific type and construction), and are not intended to indicate or imply the relative importance, order, and / or quantity of the indicated devices, units, modules, elements, circuits, or components. Unless otherwise stated, "a plurality of" means two or more.

[0072] Furthermore, it is clear that the word "comprising" does not exclude other units or steps, and the singular does not exclude the plural. Multiple units or devices recited in the device claims may also be implemented by a single unit or device through software and / or hardware.

Claims

1. A controlled switching device, characterized in that, The controlled switching device includes: The controlled switching unit, control unit, and communication unit, wherein, The controlled switching unit is electrically connected to the control unit and is electrically connected to the first device, the second device and the third device respectively. According to the control signal sent by the control unit, the controlled switching unit switches the data transmission channel between the first device and the third device and the data transmission channel between the second device and the third device. The data transmission channel transmits signals including LVDS signals and backlight signals. The data transmission channel also transmits USB signals. The controlled switching unit further includes a second controlled switching subunit, wherein, according to the received control signal, the first controlled switching subunit switches the data transmission channels of LVDS signals and backlight signals, and the second controlled switching subunit switches the data transmission channel of USB signals. The communication unit is electrically connected to the control unit. The communication unit receives RS232 signals and converts them into TTL signals for transmission to the control unit. The control unit generates control signals based on the received TTL signals.

2. The controlled switching device according to claim 1, characterized in that, The controlled switching device further includes: The first conversion driving unit receives a VGA signal or an HDMI signal output by the first device, and converts the VGA signal or HDMI signal into an LVDS signal and a backlight signal, which are then transmitted to the controlled switching unit.

3. The controlled switching device according to claim 1, characterized in that, The controlled switching unit further includes: Manual control subunit, in which, The manual control subunit is connected to an external manual switching device. When the external manual switching device is triggered, a control signal is generated through the manual control subunit.

4. A terminal display device, characterized in that, The device includes: The controlled switching device and the second device as claimed in claim 1, wherein the second device comprises: a motherboard, a second conversion drive unit, and a first display screen, wherein the controlled switching unit is electrically connected to the motherboard of the second device; The communication unit is electrically connected to the motherboard and receives RS232 signals sent by the motherboard; The motherboard is electrically connected to the second conversion driver unit and outputs VGA or HDMI signals to the second conversion driver unit. The second conversion driver unit converts the VGA or HDMI signals into LVDS signals and backlight signals and outputs them to the first display screen. The motherboard is electrically connected to the first display screen and transmits USB signals.

5. The device according to claim 4, characterized in that, The device also includes: The third device includes a second display screen, and a controlled switching unit is electrically connected to the second display screen to transmit LVDS signals, backlight signals, and USB signals.

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