Integrated Display for a Sealed Face Mask

Abstract

The present disclosure relates to systems and devices for an attachment system for an in-mask display and for a display to be integrated into a positive pressure mask. In some sealed environments, when normal atmosphere becomes unavailable, an emergency mask is used as a backup source of breathable air. The mask may enable breathing, but the visibility may be obstructed by smoke or other environmental factors. The present disclosure provides an attachment system for providing important information to a user regardless of an in-mask display and the visibility outside the mask. A mechanism is provided that enables the display to be translated vertically within the mask, allowing the user to align the display with their eyes. The display also has to be attached in a way that minimizes the penetration of the mask and dissipates the heat generated by the display to the outside of the mask.

Description

Background Art

[0001] A positive pressure face mask can ensure that there is a supply of breathable gas when the surrounding atmosphere becomes non-breathable. For example, due to a fire in a sealed environment such as an aircraft or a submarine, the atmosphere can quickly become non-breathable. In addition to becoming non-breathable, vision can also be obstructed by smoke.

Summary of the Invention

Means for Solving the Problems

[0002] The present disclosure includes systems, methods, and apparatuses for providing a display inside a sealed face mask. Generally, the innovative aspects of the subject matter described herein can be embodied in a visual display mounting system. The mounting system is configured to attach a visual display system inside a full face mask and includes a mount and a chassis. The mount includes a first plate and a second plate configured to be attached to the full face mask. The first plate is configured to be externally attached to the top of the full face mask, and the second plate is shaped to fit inside the full face mask. The first plate and the second plate are configured to be coupled to each other through the frame of the full face mask. The chassis is configured to be suspended from the second plate when installed in the full face mask. The chassis supports the display optics and the electronic circuitry of the visual display system. This and other implementations can optionally include one or more of the following features.

[0003] In some implementations, the chassis is suspended from the second plate by a drive screw and a guide rod. The guide rod can be configured to conduct thermal energy from the electronic circuitry to a fixture within the second plate.

[0004] In some implementations, the fasteners within the second plate are configured to conduct thermal energy to the first plate.

[0005] In some implementations, a visual display system includes a printed circuit board (PCB), one or more light sources, a liquid crystal on silicon (LCOS) display, and a partial reflector housed within a metal housing, the PCB including a protruding edge physically contacting and electrically grounded to the metal housing.

[0006] Another general aspect can be embodied in an apparatus including a full-face mask and a visual display system disposed inside the full-face mask. The full-face mask is configured to seal against a user's face to form a mask cavity in use, the mask including a built-in breathing apparatus and a transparent face shield. The visual display system includes a display optical system and an electronic circuit held by a chassis suspended from a mount fixed to the face shield. This and other implementations can each optionally include one or more of the following features.

[0007] In some implementations, the mount includes a first plate and a second plate. The first plate is attached outside the full-face mask above the transparent face shield. The second plate is attached inside the full-face mask and coupled to the frame of the full-face mask by a plurality of couplers. The second plate is coupled to the first plate through the frame by a plurality of fasteners, the fasteners forming a thermal path for conducting heat generated by the visual display system to the first plate. The chassis is suspended from the second plate.

[0008] In some implementations, the chassis is suspended from the second plate by a drive screw and a guide rod, the guide rod being configured to conduct thermal energy from the electronic circuit to the fasteners within the second plate.

[0009] In some implementations, the fasteners within the second plate are configured to conduct thermal energy to the first plate.

[0010] In some implementations, the visual display system includes a printed circuit board (PCB), one or more light sources, a liquid crystal on silicon (LCOS) display, and a partial reflector housed within a metal housing. The PCB physically contacts the metal housing and includes a protruding edge that is electrically grounded to it.

[0011] In some implementations, the chassis is suspended from the mount via a drive screw and is movable vertically relative thereto.

[0012] In some implementations, the drive screw engages a nut made of a self-lubricating material.

[0013] In some implementations, the drive screw has four or more threads.

[0014] In some implementations, the drive screw has eight threads.

[0015] In some implementations, the breathing apparatus is connected to an oxygen or purified air supply hose.

[0016] In some implementations, the display optical system includes a light source, a liquid crystal on silicon (LCOS) display, a partial reflector, and a combiner configured to combine light received through a face shield and an image from the LCOS display along an optical axis aligned with the user's eye during use.

[0017] In some implementations, the display optical system includes a stretched film reflective polarizer in the path between the light source and the LCOS display.

[0018] In some implementations, the chassis includes holes that function as alignment features during assembly of the device and as ventilation paths during use of the device.

[0019] Another general aspect can be embodied in a device that includes a full-face mask, a visual display system, and a visual display controller. The full-face mask is configured to seal against a user's face to form a mask cavity in use, and the mask includes a transparent face shield and a built-in respirator connected to an oxygen or purified air supply hose. The visual display system is disposed inside the mask cavity and includes a display optical system and electronic circuitry held by a chassis. The visual display controller is attached to the oxygen or purified air supply hose. The visual display controller includes a plurality of user input elements for user control of the visual display system. These and other implementations can each optionally include one or more of the following features.

[0020] In some implementations, the user input elements include a display switch, a power switch, and a brightness adjustment button.

[0021] In some implementations, the user input elements include at least one of a tactile or haptic discrimination function.

[0022] In some implementations, the visual display controller includes one or more LED indicators each including an associated crossed polarizer dimming device.

[0023] In some implementations, the device includes a triaxial cable connected to the electronic circuitry to provide power, control signals, and video data to the visual display system.

[0024] In some implementations, the triaxial cable includes a braided wire surrounding a micro coaxial cable.

[0025] In some implementations, the apparatus includes a video converter connected to an electronic circuit via a triaxial cable, and the video converter is configured to convert a video feed into a gigabit serial link signal.

[0026] In some implementations, the apparatus includes a coaxial cable connected to an electronic circuit to provide power, control signals, and video data to a visual display system. The coaxial cable includes an outer radio frequency (RF) shield, and the outer RF shield is grounded.

[0027] Details of these and other aspects are set forth in the accompanying drawings and the following description. Other features, objects, and advantages will become apparent from the description, drawings, and claims. BRIEF DESCRIPTION OF THE DRAWINGS

[0028]

Figure 1A

Figure 1B

Figure 2

Figure 3

Figure 4

Figure 5A

Figure 5B

Figure 6

Figure 7A

Figure 7B

Figure 8A

Figure 8B

Figure 9

DETAILED DESCRIPTION OF THE INVENTION

[0029] The present disclosure describes an attachment system for a display to be integrated with a display and a positive pressure mask. In some sealed environments, when normal air is unavailable, an emergency mask is used as a backup source of breathable air. For example, a fire on an aircraft can rapidly render the interior volume of the aircraft inhospitable for breathing. In such cases, an emergency mask can be provided that forms a seal with the user's face and provides an independent source of breathable air. For example, the MF20-004 mask is a full-face positive pressure oxygen mask that allows the user to breathe independently of the surrounding atmosphere. The mask may allow breathing, but vision may be obstructed by smoke or other environmental factors. In the example of an aircraft, it may be essential for the pilot to have access to certain information (e.g., airspeed, attitude, altitude, etc.) even when the view within the cockpit is blocked. The present disclosure provides an attachment system for providing important information to the user regardless of the display within the mask and the view outside the mask.

[0030] Since the in-mask display is placed near the user's eyes (inside the mask), it should be adjustable to fit users with different face structures. A mechanism is provided that allows the display to be translated vertically within the mask, enabling the user to align the display with their eyes. The display must also be attached in a way that minimizes the mask's penetration (and thus potential leakage points) and conducts the heat generated by the display to the outside of the mask.

[0031] This disclosure describes an in-mask display system in the context of an aircraft pilot's mask, but the disclosed display system is also useful for masks used in other contexts. For example, the in-mask display system described herein can be incorporated into other sealed face masks, such as firefighter masks or diving masks.

[0032] Figures 1A and 1B show an example face mask 104 equipped with an internal display system 102 and a controller 108. The full-face mask 104 includes a seal that surrounds the user's eyes, nose, and mouth, preventing or reducing gas exchange between the environment inside and outside the mask. In some implementations, the full-face mask 104 is an MF20-004 mask. The umbilical 106 delivers a pressurized gas supply (e.g., compressed air or oxygen) that pressurizes the inside of the mask. The breathable gas supply can be provided to a breathing apparatus 110, which can control the gas flow in response to the user's breathing requirements. In some implementations, an exhaust valve (not shown) near the top of the mask allows excess gas (e.g., exhaled air from the user) to exit the mask while ensuring that outside gas does not enter the mask. In addition to delivering pressurized breathable gas, the umbilical 106 can include one or more data cables 107 that transmit communication and / or power to a control system associated with the mask and / or the display system 102.

[0033] The display system 102 can be attached inside the cavity 103 of the mask and configured to be placed in front of the user's eyes. For example, the cavity 103 can be formed between the face shield of the face mask (shown as 904 in FIG. 9) and the user. In the illustrated example, the display system 102 is a transparent head-up display (HUD) that displays images, data, or both while also allowing the user to see through the display. In some implementations, the display system 102 can be a solid screen and see-through is provided using an external (e.g., forward-facing) camera. In some implementations, the display system 102 can be positioned to cover only one of the user's eyes. The display system 102 is height adjustable, allowing the user to align it with their eyes. Height adjustment is discussed in more detail below with respect to FIG. 3. The face mask 104 and the display system 102, together with the controller 108, are configured to weigh less than 2.3 pounds.

[0034] In some implementations, a controller 108 is provided to enable a user to interact with the display system 102. The controller 108 shown in FIG. 1B includes some user controls including, but not limited to, a power button, a display button, and brightness increase and decrease buttons. User controls are typically physical tactile input elements and can include push buttons, rocker switches, membrane switches, rotary switches, slide switches, toggle switches. The display button can be used to cycle through various menus or options within the graphical user interface in the display system 102. In some implementations, the controller 108 includes more or fewer controls than those shown in FIG. 1B. Additionally, the controls on the controller 108 are not limited to buttons. The controls can include toggles, knobs, dials, touchscreens, or other input devices. In some implementations, the controls can include a tactile feature 109 on or near the control to distinguish the control buttons / switches from each other. For example, the controller 108 shown in FIG. 1B shows embossed "+" and "-" symbols next to the brightness control buttons.

[0035] Figure 2 is a front view of an internal display and attachment system for a face mask. The display system 102 includes a chassis 202 suspended from an internal plate 210 by height adjusters 208 and one or more guide rods 206. The internal plate 210 is attached to an external plate 212 on the outside of the mask inside the mask. The internal plate 210 can be attached to the mask frame 105 through one or more sealed through-holes or other fixing devices. The internal plate 210 is coupled to the inside of the face mask 104 using a connector 214. FIGS. 8A and 8B show perspective views of an exemplary connector 214. The connector 214 is attached to the internal plate 210 at a connection point 216. The connector 214 includes a head 802 configured to connect to the inside of the face mask frame 105 and a groove (e.g., a dovetail) 804 configured to contact a corresponding tab 408 (shown in FIG. 4) disposed at the connection point 216. For example, the connector 214 is passed through an existing rivet hole 902 in the face mask 104 and fastened to the connection point 216 on the internal plate 210 (shown in FIG. 9). The external plate 212 and the internal plate 210 can be screwed together at the top with an existing silicone seal of the face mask 104 sandwiched therebetween. The silicone seal can function as an intrusion protection. As will be described in more detail below with reference to FIG. 4, the internal plate 210 can provide heat transfer from the chassis 202 to the external plate 212.

[0036] The outer plate 212 can be attached to the inner plate 210 outside the mask seal and can include the electronics and other components necessary to operate the display system 102. Some implementations include electronics within the outer plate 212 that generate significant heat or use greater voltage / current. The inside of the mask can be in a pure oxygen environment, and thus specific circuits can be included in the outer plate 212 outside the mask to avoid concerns about sparks or other flammability. In some implementations, video and / or telemetry data from outside the mask (e.g., from an aircraft) is provided to circuits within the outer plate 212 via an umbilical (e.g., umbilical 106 as described with reference to FIG. 1), where it is converted to a low-power dedicated format and transmitted to the mask via a single cable (e.g., a triaxial cable). In some cases, the video and / or telemetry data is provided in a low-power dedicated format via one or more data cables 107 of the umbilical 106 and does not need to be converted by the display system 102 until it is provided to the display lens 204. The outer plate 212 can include a data cable connection 213, which can be connected to a data cable (e.g., data cable 107 of FIG. 1).

[0037] The chassis 202 houses additional circuitry for generating an image on the display lens 204. The chassis 202 is suspended from an internal plate 210 via a height adjuster 208. The height adjuster 208 can be implemented as a worm gear rotatably attached to the internal plate 210. When the height adjuster 208 rotates, its threads engage a channel within the chassis 202, translating the entire chassis 202 vertically depending on the direction of rotation. In some implementations, the height adjuster 208 engages or is formed of a self-lubricating material (e.g., high density polyethylene) that reduces the risk of wear and sparks or arcs. In some implementations, the height adjuster 208 is an 8-tooth worm gear. For example, an 8-tooth worm gear provides a significant vertical displacement of the chassis 202 with minimal rotation (e.g., a vertical displacement of about 1 - 2 inches with about 45 degrees of rotation). Other implementations can include height adjusters with 4 - 10 teeth.

[0038] To ensure that the position of the chassis 202 is aligned with the user's face as it translates, and to assist with heat conduction from the chassis 202 to the internal plate 210, guide rods 206 are provided. The chassis 202 can generally include a shroud or enclosure that surrounds at least a portion of the additional circuitry and the display lens 204. In some implementations, the shroud includes an aluminum alloy that is beneficial for heat transfer from within the display system 102 and for reducing electromagnetic interference (EMI). In some cases, the shroud is an anodized aluminum alloy. In some implementations, the shroud is a magnesium alloy. Heat generating components inside the chassis 202 can be thermally coupled to the shroud to facilitate rapid heat dissipation and transfer outside of the display system 102.

[0039] The display lens 204 receives an image and redirects it towards the user's eyes. In some implementations, the display lens also allows external light to pass through and provides the projected image as an overlay on what the user would normally see.

[0040] Figure 3 is a side view of an internal display and attachment system for a face mask. In the side view, the height adjustment lever 302 can be seen. With the height adjustment lever 302, the user can manually rotate the height adjuster 208 to align the display lens 204 with their eyes. In some implementations, the height adjustment can be automated, and a sensor (e.g., a camera) within the chassis 202 can detect the location of the user's eyes and automatically rotate the height adjuster 208 to align the position with the detected eye location.

[0041] Figure 4 is a view of an attachment plate for a mask-in display system. The inner plate 210 and the outer plate 212 are configured to sandwich the frame of the mask. In some cases, these plates are screwed together with sealing screws through openings within the mask seal. In some implementations, the openings are used as exhaust ports for a positive pressure environment inside the mask.

[0042] The outer plate 212 is formed of an aluminum alloy and can function as a heat sink for the thermal energy generated by a display system (e.g., the display system 102 of FIG. 1). In some implementations, the outer plate 212 includes fins, channels, or other surface area enhancement features (not shown) that improve the plate's ability to dissipate heat from the mask.

[0043] The internal plate 210 includes a thermally conductive fastener 402. The thermally conductive fastener 402 is attached to the external plate 212 and can provide good heat transfer between the internal plate 210 and the external plate 212. In some cases, the thermally conductive fastener 402 is an aluminum alloy, a ceramic material, graphite, a carbon-impregnated rubber material, or other material with high thermal conductivity. In the illustrated example, the thermally conductive fastener 402 includes a threaded slot (not shown) at the bottom into which a guide rod (e.g., the guide rod 206 in FIG. 2) can be screwed. The thermally conductive guide rod provides a heat path from the display system through the guide rod and the thermally conductive fastener 402 to the external plate 212.

[0044] The internal plate 210 can include a cable port 404, which enables data and communication cables (e.g., triaxial cables) to reach the display system from the external plate 212 through the internal plate 210. The cable port 404 can include a packing material or one or more seals to reduce or prevent gas from passing through the cable port 404. In some cases, a single, combined data and power cable reaches the display system from the umbilical through the external plate 212 and the internal plate 210. The cable can transmit low-power signals for images or video. For example, the cable can transmit gigabit serial link data that enables high-speed, high-bandwidth, bidirectional communication using a single EMI-resistant cable. The cable can be, for example, a triaxial cable or a coaxial cable, with additional braided wire surrounding the coaxial cable. In some implementations, the cable includes multiple twisted pairs. In some implementations, the cable includes an external high-frequency (RF) shield coupled to ground.

[0045] Figures 5A and 5B are partial schematic views of an in-mask display system showing some components in a front view and a top perspective view, respectively. The in-mask display system 102 includes a circuit 502 that converts signals received via a cable into an optical image to be projected onto the user's eye. The circuit 502 can include, but is not limited to, a projector 506, a display buffer storage, a voltage regulator, a serializer / deserializer chip for multiplexing and demultiplexing gigabit serial link signals, a microcontroller unit, or other integrated circuit components. The circuit 502 can be provided on one or more printed circuit boards (PCBs). In the example shown, three PCBs are provided, one for each projector, and the central PCB includes other components (such as a display buffer, a voltage regulator, a serializer / deserializer chip, a microcontroller, etc.).

[0046] The central PCB includes an exposed strip 508 in the example shown, which can make electrical contact with the shroud of the chassis, ensuring that the display system and the structural components are electrically grounded. The exposed strip 508 forms an edge that protrudes from the rest of the PCB and can physically contact the shroud. The heat-generating components within the circuit 502 can be thermally coupled to the shroud (e.g., via a heat pipe, thermal paste, or other connection), and the shroud can contact the guide rod, providing a thermal connection from the circuit 502 to the external plate 216 as discussed above.

[0047] Each projector 506 includes one or more displays, an LED backlight, and one or more lenses for projecting an image into the optical path 504. The optical path 504 is the path through which the projected image travels from the projector, through one or more lenses, and is reflected by one or more reflectors to reach the user's eyes. The display within the projector 506 can be a liquid crystal on silicon (LCOS) display. The LCOS display is advantageous in that it has a small form factor and may have relatively low power consumption compared to other projector displays.

[0048] FIG. 6 is a diagram showing the optical path of an example of an in-mask display system. The projector 506 generates an optical image that travels along the optical path 504 to one or more reflectors 602, and the reflector 602 reflects this optical image to the power lens 604. The power lens 604 collimates the optical image and focuses it on the combiner 606, which reflects the projected optical image to the user's eyes as a projected image 608. In addition, the combiner 606 passes the ambient image 610 and combines it with the projected image 608 to provide the user with an HUD-style display, and the projected image is superimposed on what the user sees through the front of the mask.

[0049] In some implementations, the reflector 602 can be a stretched film polarizer. The stretched film polarizer is a type of reflective polarizer. Due to the characteristic of using an LCOS that encodes an image in a polarized state first, some elements in the optical path must have polarization-dependent characteristics, so that polarized image light is separated from non-image light (e.g., the ambient image 610). The stretched film polarizer achieves this requirement while being easier to manufacture and much more resistant to breakage compared to alternatives.

[0050] Figures 7A and 7B are diagrams of the mask in the storage box with the controller exposed. In some cases, it is necessary to perform regular maintenance and liveness checks on the mask and the display within the mask. The controller can be attached to the front of the box, and the mask can be stored in the storage box 702. In some implementations, the controller is stored within the box but is positioned such that its face is visible from the outside of the box. By providing maintenance without removing the mask from its storage box 702, wear is reduced, the life of the mask is extended, and maintenance time is also reduced.

[0051] The controller 108 can include one or more status indicators 704, which can be, for example, LED lights or other indicators that indicate other important elements such as battery charging, data connection, or to ensure that the mask and the display within the mask are ready to operate. In some implementations, the LED indicator has an associated crossed polarizer dimmer. For example, the crossed polarizer dimmer can be used to reduce the brightness of the LED light output.

Description of Reference Numerals

[0052] 102 Display system 103 Cavity 104 Face mask 105 Mask frame 106 Umbilical 107 Data cable 108 Controller 109 Tactile function 110 Respirator 202 Chassis 204 Display lens 206 Guide rod 208 Height adjuster 210 Inner plate 212 Outer plate 213 Data cable connection 214 Connector 216 Connection Point 302 Height Adjustment Lever 402 Thermal Conductive Fastener 404 Cable Port 408 Tab 502 Circuit 504 Optical Path 506 Projector 508 Exposed Strip 602 Reflector 604 Power Lens 606 Combiner 608 Projected Image 610 Surrounding Image 702 Storage Box 704 Status Indicator 802 Head 804 Groove 902 Rivet Hole

Claims

1. A visual display mounting system configured to attach a visual display system inside a full-face mask, comprising: A mount including a first plate and a second plate configured to be attached to the full-face mask, wherein the first plate is configured to be externally attached to the top of the full-face mask, the second plate is shaped to fit inside the full-face mask, and the first plate and the second plate are configured to be coupled to each other via the frame of the full-face mask; A chassis configured to be suspended from the second plate when installed on the full-face mask, the chassis supporting the display optical system and the electronic circuit of the visual display system; A visual display mounting system comprising the above.

2. The system according to claim 1, wherein the chassis is suspended from the second plate by a drive screw and a guide rod, and the guide rod is configured to conduct thermal energy from the electronic circuit to a fixture in the second plate.

3. The system according to claim 2, wherein the fixture in the second plate is configured to conduct thermal energy to the first plate.

4. The visual display system according to claim 2, comprising a printed circuit board (PCB), one or more light sources, a liquid crystal on silicon (LCOS) display, and a partial reflector housed in a metal housing, wherein the PCB includes a protruding edge physically contacting and electrically grounded to the metal housing.

5. A full-face mask configured to seal against a user's face to form a mask cavity, the full-face mask including a built-in breathing apparatus and a transparent face shield; A visual display system disposed inside the mask cavity, the visual display system including a display optical system and an electronic circuit held by a chassis, the chassis being suspended from a mount fixed to the face shield; An apparatus comprising the above.

6. The mount is A first plate attached to the outside of the full-face mask above the transparent face shield; A second plate attached to the inside of the full-face mask and coupled to the frame of the full-face mask by a plurality of couplers, the second plate being coupled to the first plate via the frame by a plurality of fasteners, the fasteners forming a heat path for conducting heat generated by the visual display system to the first plate, the chassis being suspended from the second plate; The apparatus according to claim 5, comprising: **Claim 7** The chassis is suspended from the second plate by a drive screw and a guide rod, the guide rod being configured to conduct thermal energy from the electronic circuit to the fasteners within the second plate; The fasteners within the second plate are configured to conduct thermal energy to the first plate; The visual display system includes a printed circuit board (PCB), one or more light sources, a liquid crystal on silicon (LCOS) display, and a partial reflector housed in a metal housing, the PCB including a protruding edge physically contacting and electrically grounded to the metal housing. The apparatus according to claim 6. **Claim 8** The chassis is suspended from the mount via a drive screw and is movable vertically relative to the mount. The apparatus according to claim 5. **Claim 9** The drive screw engages a nut made of a self-lubricating material. The apparatus according to claim 8. **Claim 10** The drive screw includes four or more threads. The apparatus according to claim 8. **Claim 11** The drive screw includes eight threads. The apparatus according to claim 10. **Claim 12** The breathing apparatus is connected to an oxygen or purified air supply hose. The apparatus according to claim 5. **Claim 13** The display optical system includes a light source, a liquid crystal on silicon (LCOS) display, a partial reflector, and a combiner configured to combine light received through the face shield and an image from the LCOS display along an optical axis aligned with the user's eye during use. The apparatus according to claim 5. **Claim 14** The display optical system further includes a stretched film reflective polarizer in a path between the light source and the LCOS display, the apparatus according to claim 13.

15. The chassis includes holes that function as an alignment function during assembly of the apparatus and as a ventilation path during use of the apparatus, the apparatus according to claim 5.

16. A full-face mask configured to seal against a user's face to form a mask cavity in use, the full-face mask including a transparent face shield and a built-in respirator connected to an oxygen or purified air supply hose, A visual display system disposed inside the mask cavity, the visual display system including a display optical system and an electronic circuit held by a chassis, A visual display controller attached to the oxygen or purified air supply hose, the visual display controller including a plurality of user input elements for user control of the visual display system, An apparatus including.

17. The user input elements include a display switch, a power switch, and a brightness adjustment button, the apparatus according to claim 16.

18. The user input elements include at least one of a tactile or haptic discrimination function, the apparatus according to claim 16.

19. The visual display controller includes one or more LED indicators each including an associated crossed polarizer dimming device, the apparatus according to claim 16.

20. The apparatus according to claim 16 further includes a triaxial cable connected to the electronic circuit to provide power, control signals, and video data to the visual display system.

21. The triaxial cable includes a braided wire surrounding a micro coaxial cable, the apparatus according to claim 20.

22. The apparatus according to claim 20 further includes a video converter connected to the electronic circuit via the triaxial cable, the video converter being configured to convert a video feed into a gigabit serial link signal.

23. The apparatus according to claim 16, further comprising a coaxial cable connected to the electronic circuit for providing power, control signals, and video data to the visual display system, the coaxial cable including an outer high-frequency (RF) shield, the outer RF shield being grounded.

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