Cockpit Multi-Screen Pure Hardware Synchronization Safety Direct Drive Channel and Method

Abstract

This invention discloses a pure hardware synchronous safety direct-drive channel and method for multi-screen cockpit displays, belonging to the field of intelligent cockpit display technology. The channel is a pure hardware design without firmware, with hardware frame synchronization locking the multi-screen refresh rate. An independent safety channel physically isolates the main display path, directly driving key safety information such as vehicle speed and alarm indicator lights without passing through a graphics processor. The method involves entirely hardware direct-drive display without software rendering. This invention improves upon issues such as cockpit display stuttering, easy interruption of safety information, and screen asynchrony, providing stable display and continuous output of safety information, making it suitable for intelligent cockpit multi-screen display systems.

Description

Technical Field

[0001] This invention relates to the field of intelligent cockpit display technology, specifically to a cockpit multi-screen pure hardware synchronous secure direct drive channel and method. Background Technology

[0002] The multi-screen display in intelligent cockpits relies heavily on graphics processors and software rendering, resulting in defects such as system lag, screen asynchrony, main control system crashes leading to interruptions in safety information, and the possibility of modified displayed data. Critical information such as vehicle speed and fault alarms depends on system rendering; when the system crashes, it cannot display correctly, posing a driving safety hazard. The industry lacks a direct hardware-based channel for safety information, making it difficult to effectively address the defects in software display. Summary of the Invention

[0003] This invention provides a multi-screen pure hardware synchronization secure direct-drive channel and method, employing a hardware frame lock-in circuit to synchronize the refresh rate of multiple screens without software synchronization algorithms. An independent, physically isolated secure channel is established, allowing information such as vehicle speed and warning lights to directly drive the display screen without passing through a graphics processor or main control unit. This eliminates rendering, caching, and relaying, ensuring continuous and stable display of security information and improving multi-screen synchronization.

[0004] Comparison with existing technologies and competing products 1. Existing competing products use GPU software rendering combined with system synchronization, which is prone to lag, crashes, and interruptions in display, and the information can be modified; this invention uses pure hardware direct drive and physically isolated channels, so it can still display under abnormal conditions, and the parameters cannot be modified.

[0005] 2. This solution decouples security information from the main system, improving display continuity and security.

[0006] 3. This technology differs from existing software display architectures and has clear technological differentiation. Beneficial effects

[0007] 1. Continuous display capability: Independent hardware channel ensures that vehicle speed and alarm information can still be displayed even during system lag or black screen. 2. Multi-screen synchronization effect: Hardware frame locking ensures a stable refresh rate and reduces screen flickering and tearing; 3. Display security: Physical isolation prevents data intrusion, reducing the probability of displayed information being modified; 4. Low power consumption and stable operation: No rendering or computation, low power consumption, reducing stuttering and screen flickering; 5. Full-scene adaptation: Supports multi-screen synchronization of instrument panel, central control and passenger screen, and is compatible with in-vehicle displays. Detailed Implementation

[0008] This invention is applied to a multi-screen display system in a smart cockpit, and is compatible with the vehicle's full LCD instrument panel, central control screen, and passenger entertainment screen. The hardware display synchronization controller outputs a frame synchronization signal, hard-wires lock the refresh rate of all displays, and the hardware automatically relocks the frame rate when the screen is hot-swapped to reduce screen tearing.

[0009] An independent hardware safety channel is set up, which is physically and electrically isolated from the main display channel, with no signal coupling and no data intrusion; critical safety signals such as vehicle speed, braking alarm, and fault indicator light are directly driven to the corresponding area of ​​the display screen through the one-way isolated channel hardware, without passing through the graphics processor or the cockpit main control unit, and without graphics rendering or data caching.

[0010] The channel integrates a hardware refresh monitoring circuit, which switches to redundant paths when display anomalies are detected; it also integrates backlight control, open circuit detection and temperature compensation circuits to adapt to high and low temperature conditions in vehicles; all synchronization parameters and display thresholds are factory-hardened in one go, with no firmware or programming interface.

[0011] This channel is compatible with in-vehicle digital displays, decoupling safety information from the main system. It can still stably display core safety information even under abnormal vehicle conditions, making it suitable for smart cockpits in passenger vehicles.

Claims

1. A pure hardware synchronization and safety-critical information redundancy direct-drive channel for multi-screen display in intelligent cockpits, characterized in that, The system is composed of pure hardware logic circuits without firmware; it includes: a hardware display synchronization controller that sends frame synchronization signals to lock the refresh rate of multiple screens; and an independent hardware security channel that is physically isolated from the main channel and directly drives the security information display area without going through the graphics processor.

2. A multi-screen pure hardware synchronous secure direct drive method, applied to the channel described in claim 1, characterized in that, Pure hardware execution without software; including: hardware locking of multi-screen frame rate by the synchronization controller; hardware direct drive of the security channel for security information display, with no graphics processor intervention throughout the process.

3. The channel according to claim 1 or the method according to claim 2, characterized in that, It supports hot-swappable hardware frame rate relock and integrates hardware refresh monitoring, redundant channel switching, backlight control, open circuit detection, and temperature compensation circuits.

4. The channel according to claim 1 or the method according to claim 2, characterized in that, Safety information, including vehicle speed and alarm light hardware direct drive signals, is transmitted directly through a one-way isolation channel without being relayed by the cockpit main control unit.

5. The channel according to claim 1 or the method according to claim 2, characterized in that, Synchronization parameters and refresh thresholds are fixed in hardware in one go, eliminating screen tearing and display delay.

6. The channel or method according to any one of claims 1-5, characterized in that, The safety passage is physically and electrically isolated from the main passage, with no signal coupling and no data intrusion.

7. The channel or method according to any one of claims 1-5, characterized in that, The display synchronization is hard-wired frame-locked, with no software synchronization algorithm and no jitter offset.

8. The channel or method according to any one of claims 1-5, characterized in that, Security information is directly driven without caching, graphics rendering, or data transfer.

9. The channel or method according to any one of claims 1-8, characterized in that, The entire channel has no firmware interface, and the display logic and physical properties are fixed and cannot be tampered with.

10. A vehicle, characterized in that, It can be equipped with the channel according to any one of claims 1-9, or perform the method according to any one of claims 2-9.