Multi-channel video on-screen expansion device
By designing a multi-channel video simulcasting expansion device, the problems of limited interface quantity and poor compatibility of bedside image processors were solved, realizing multi-channel video simulcasting expansion and interface compatibility, and reducing production costs.
Patent Information
- Application Number
- CN202521222934.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-06-16
- Publication Date
- 2026-05-15
- Estimated Expiration
- 2035-06-16
AI Technical Summary
Existing bedside image processors have few video expansion interfaces and poor compatibility, making them incompatible with older medical monitors.
Design a multi-channel video simulcasting expansion device, including HDMI-IN, BNC, DVI and HDMI-OUT interfaces, with an internal expansion device circuit board, supporting four-channel monitor simulcasting expansion, and realizing the conversion and output of various video formats through a main control chip, video expansion chip and digital-to-analog converter.
It enables multi-channel video simultaneous display expansion, has strong compatibility, supports multiple interfaces, meets the output requirements of different medical monitors, and reduces the difficulty of circuit design and production costs.
Smart Images
Figure CN224249740U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of medical equipment, and in particular to a multi-channel video simultaneous display expansion device. Background Technology
[0002] Currently, in clinical use, teaching, and training of medical endoscopes, there is a need for image processors that support multi-channel video output on a single screen. Desktop processors, due to their large size, can integrate video expansion functionality into their circuitry. However, bedside processors, due to their small size, cannot accommodate the bulky DVI and BNC interfaces, and often use the smaller HDMI interface as the video expansion output connector, typically with only one port. Furthermore, different medical institutions use medical monitors of varying ages and models; older monitors often have BNC and DVI interfaces but no HDMI, while newer monitors have BNC, DVI, and HDMI interfaces. This results in poor compatibility of the video expansion output interfaces.
[0003] In summary, existing bedside image processors have few video expansion interfaces, typically only one, allowing connection to a single medical monitor. Furthermore, the expansion interfaces lack compatibility, failing to support older medical monitors that have not yet been replaced in existing healthcare facilities.
[0004] Therefore, how to provide a compatible multi-channel video simulcasting extension device has become a problem that urgently needs to be solved by those skilled in the art. Utility Model Content
[0005] The purpose of this invention is to provide a multi-channel video mirroring expansion device to solve the problems of limited expansion interfaces and poor compatibility in existing video mirroring expansion devices.
[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:
[0007] This utility model provides a multi-channel video simultaneous display expansion device, including a housing. The front end of the housing has an HDMI-IN interface for video digital data input, and the rear end of the housing has a BNC interface, two DVI interfaces, and an HDMI-OUT interface for signal output. An expansion device circuit board is installed inside the housing, and the HDMI-IN interface, the BNC interface, the DVI interface, and the HDMI-OUT interface are all mounted on the expansion device circuit board.
[0008] Optionally, a DC power interface through hole is provided on the side wall of the housing, and a DC power interface is installed on the circuit board of the expansion device, with the DC power interface located inside the DC power interface through hole.
[0009] Optionally, the expansion device circuit board is equipped with a main control chip, a video expansion chip, and a digital-to-analog converter. The main control chip is electrically connected to the video expansion chip and the digital-to-analog converter, respectively. The video expansion chip is electrically connected to the HDMI-IN interface, the digital-to-analog converter, the DVI interface, and the HDMI-OUT interface, respectively. The digital-to-analog converter is electrically connected to the BNC interface.
[0010] Optionally, the expansion device circuit board is provided with an ESD protection chip for protecting against electrostatic interference. Multiple ESD protection chips are provided and are respectively located behind the DVI interface and the HDMI-OUT interface.
[0011] Optionally, the front end of the housing is also provided with a pin socket for functional expansion, and the pin socket is electrically connected to the circuit board of the expansion device.
[0012] Optionally, the expansion device circuit board is also equipped with a first serial port for programming the main control chip, a second serial port for viewing system operation, and a third serial port for configuring parameters of the digital-to-analog converter.
[0013] Optionally, the expansion device circuit board has mounting holes at its four corners for fixing the expansion device circuit board.
[0014] Compared with the prior art, the beneficial technical effects of this utility model are as follows:
[0015] The multi-channel video simultaneous display extension device provided by this utility model supports simultaneous display of four monitors.
[0016] This utility model features a modular design, allowing it to be used as a standalone video expansion module. It can be integrated into a desktop image processor, reducing circuit design complexity and improving design and development efficiency. Simultaneously, a casing (16) can be designed to enclose the video expansion device, addressing the issues of limited video expansion ports and poor compatibility in existing bedside image processors.
[0017] This utility model has multiple video output interfaces, strong compatibility, and can meet different output needs.
[0018] This utility model has good versatility, can be mass-produced, and has low manufacturing costs. Attached Figure Description
[0019] The present invention will be further described below with reference to the accompanying drawings.
[0020] Figure 1 This is a schematic diagram of the internal structure of the input terminal of the multi-channel video simultaneous display expansion device of this utility model;
[0021] Figure 2This is a schematic diagram of the internal structure of the output end of the multi-channel video simultaneous display expansion device of this utility model;
[0022] Figure 3 This is a schematic diagram of the front structure of the multi-channel video simultaneous display expansion device of this utility model;
[0023] Figure 4 This is a schematic diagram of the back structure of the multi-channel video simultaneous display expansion device of this utility model.
[0024] Explanation of reference numerals in the attached diagram: 1. Mounting hole; 2. ESD protection chip; 3. First serial port; 4. Second serial port; 5. Main control chip; 6. 20-pin socket; 7. Video expansion chip; 8. HDMI-IN interface; 9. Expansion device circuit board; 10. DC power interface; 11. Third serial port; 12. Digital-to-analog converter; 13. BNC interface; 14. DVI interface; 15. HDMI-OUT interface; 16. Housing. Detailed Implementation
[0025] To make the technical problem to be solved, the technical solution, and the beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit this utility model.
[0026] like Figure 1-4 As shown, a multi-channel video simultaneous display expansion device includes a housing 16. The front end of the housing 16 has an HDMI-IN interface 8 for video digital data input, and the rear end of the housing 16 has a BNC interface 13, two DVI interfaces 14, and an HDMI-OUT interface 15 for signal output. An expansion device circuit board 9 is installed inside the housing 16, and the HDMI-IN interface 8, the BNC interface 13, the DVI interface 14, and the HDMI-OUT interface 15 are all mounted on the expansion device circuit board 9.
[0027] Specifically, a DC power interface 10 through hole is provided on the side wall of the outer casing 16, and a DC power interface 10 is installed on the expansion device circuit board 9. The DC power interface 10 is located inside the DC power interface 10 through hole.
[0028] The DC power interface 10 is used to connect to an external DC power plug for power supply.
[0029] Specifically, the expansion device circuit board 9 is equipped with a main control chip 5, a video expansion chip 7, and a digital-to-analog converter 12. The main control chip 5 is electrically connected to the video expansion chip 7 and the digital-to-analog converter 12, respectively. The video expansion chip 7 is electrically connected to the HDMI-IN interface 8, the digital-to-analog converter 12, the DVI interface 14, and the HDMI-OUT interface 15, respectively. The digital-to-analog converter 12 is electrically connected to the BNC interface 13.
[0030] In practice, digital video data is input into the video expansion chip 7 through the HDMI-IN interface 8. Under the control of the main control chip 5, the video expansion chip 7 expands the input single-channel digital video data into four channels for simultaneous screen display and outputs four channels of digital video data to the video output terminal. One channel is output to the HDMI-OUT interface 15, two channels are output to the two DVI interfaces 14, and the last channel of digital video data is first input to the digital-to-analog converter 12. The digital-to-analog converter 12 converts the digital video signal into an analog video signal and outputs it to the BNC interface 13.
[0031] Specifically, the expansion device circuit board 9 is provided with an ESD protection chip 2 for protecting against electrostatic interference. Multiple ESD protection chips 2 are provided and are located behind the DVI interface 14 and the HDMI-OUT interface 15, respectively.
[0032] In practical implementation, the ESD protection chip 2 is used to prevent the static electricity generated during the hot-plugging of the video output port from affecting the electronic components such as chips on the expansion device, thereby improving the reliability of the device and improving the quality of video data output.
[0033] Specifically, the front end of the housing 16 is provided with a 20-pin socket 6 for functional expansion, and the 20-pin socket 6 is electrically connected to the circuit board 9 of the expansion device.
[0034] Specifically, the expansion device circuit board 9 is also equipped with a first serial port 3 for programming the main control chip 5, a second serial port 4 for viewing system operation, and a third serial port 11 for configuring the parameters of the digital-to-analog converter 12.
[0035] Specifically, the expansion device circuit board 9 has fixing holes 1 at its four corners for fixing the expansion device circuit board 9.
[0036] The multi-channel video simultaneous display extension device provided by this utility model supports simultaneous display of four monitors.
[0037] This utility model features a modular design, allowing it to be used as a standalone video expansion module. It can be integrated into a desktop image processor, reducing circuit design complexity and improving design and development efficiency. Simultaneously, a casing (16) can be designed to enclose the video expansion device, addressing the issues of limited video expansion ports and poor compatibility in existing bedside image processors.
[0038] This utility model has multiple video output interfaces, strong compatibility, and can meet different output needs.
[0039] This utility model has good versatility, can be mass-produced, and has low manufacturing costs.
[0040] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.
[0041] The embodiments described above are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Various modifications and improvements made to the technical solutions of the present utility model by those skilled in the art without departing from the spirit of the present utility model should fall within the protection scope defined by the claims of the present utility model.
Claims
1. A multi-channel video simultaneous display extension device, characterized in that: The device includes a housing (16), with an HDMI-IN interface (8) for video digital data input at the front end and a BNC interface (13), two DVI interfaces (14), and an HDMI-OUT interface (15) for signal output at the rear end. An expansion device circuit board (9) is installed inside the housing (16), and the HDMI-IN interface (8), the BNC interface (13), the DVI interface (14), and the HDMI-OUT interface (15) are all mounted on the expansion device circuit board (9).
2. The multi-channel video simultaneous display extension device according to claim 1, characterized in that: A DC power interface (10) through hole is provided on the side wall of the outer shell (16), and a DC power interface (10) is installed on the circuit board (9) of the expansion device, and the DC power interface (10) is located in the through hole of the DC power interface (10).
3. The multi-channel video simultaneous display expansion device according to claim 1, characterized in that: The expansion device circuit board (9) is equipped with a main control chip (5), a video expansion chip (7) and a digital-to-analog converter (12). The main control chip (5) is electrically connected to the video expansion chip (7) and the digital-to-analog converter (12) respectively. The video expansion chip (7) is electrically connected to the HDMI-IN interface (8), the digital-to-analog converter (12), the DVI interface (14) and the HDMI-OUT interface (15) respectively. The digital-to-analog converter (12) is electrically connected to the BNC interface (13).
4. The multi-channel video simultaneous display extension device according to claim 1, characterized in that: The expansion device circuit board (9) is provided with an ESD protection chip (2) for protecting against electrostatic interference. Multiple ESD protection chips (2) are provided and are located behind the DVI interface (14) and the HDMI-OUT interface (15).
5. The multi-channel video simultaneous display extension device according to claim 1, characterized in that: The front end of the housing (16) is also provided with a 20-pin socket (6) for functional expansion, and the 20-pin socket (6) is electrically connected to the circuit board (9) of the expansion device.
6. The multi-channel video simultaneous display extension device according to claim 3, characterized in that: The expansion device circuit board (9) is also equipped with a first serial port (3) for programming the main control chip (5), a second serial port (4) for viewing the system operation, and a third serial port (11) for configuring the parameters of the digital-to-analog converter (12).
7. The multi-channel video simultaneous display extension device according to claim 1, characterized in that: The expansion device circuit board (9) has fixing holes (1) at its four corners for fixing the expansion device circuit board (9).