Video Card Network Interface Digital Output
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Solution Overview
Problem
Existing video cards for KVM over IP functions require multiple data conversions using D/A and A/D converters, leading to data precision deterioration, reduced transmission speed, and increased manufacturing costs.
Innovation Solution
A video card design that directly outputs digital video data to a remote computer through a network, reducing the number of D/A and A/D conversions by incorporating a control unit, network interface, interface controller, bus interface, video memory, CPU, and D/A converter, allowing for direct digital data processing and compression for network transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If D/A converter and A/D converter are used to transfer video data through KVM-over-IP device, then the video data can be transmitted through the network, but the data precision is deteriorated and transmission speed is reduced
Solution Approach 1:
The patent extracts and removes the D/A converter from the video card, eliminating the need for analog conversion. The video card directly outputs digital video data through the network interface, bypassing the KVM-over-IP device's A/D converter, thus removing the sources of data precision deterioration while maintaining network transmission capability
Solution Approach 2:
The patent introduces a digital signal processing intermediary (interface controller and CPU) that handles video data in digital form throughout the entire transmission chain, from the video card through the network to the remote computer, eliminating the need for analog-digital conversions that cause precision loss
2Productivity
If multiple conversion processes are used, then the video data can be transmitted through network, but the transmission speed is reduced
Solution Approach 1:
The patent establishes a continuous digital data transmission path from the video card's bus interface through the interface controller and CPU directly to the network interface, maintaining digital form throughout without interruption by conversion processes, thereby ensuring continuous high-speed transmission
Solution Approach 2:
By removing the D/A converter from the video card and designing direct digital output capability, the patent eliminates multiple conversion steps that slow down transmission, achieving faster data transfer speeds while maintaining the ability to transmit through standard network infrastructure
3Ease of manufacture
If D/A converter and A/D converter are used, then the video data can be converted for network transmission, but the manufacturing cost is increased
Solution Approach 1:
The patent removes the D/A converter component from the video card design, reducing the bill of materials and manufacturing complexity. By designing the video card to output digital data directly, the invention eliminates the need for this expensive component while maintaining full functionality for network transmission
Solution Approach 2:
The patent adopts a more economical approach by using standard digital network interfaces and processors that can handle video data compression and transmission, replacing the expensive D/A and A/D converter combination with more cost-effective digital-only architecture
Data Source
AI summary
A video card is controlled by a control unit to output video data to a display or through a network. The video card includes a network interface, an interface controller and a bus interface. The network interface is connected to the network to transfer the video data. The interface controller is coupled to the network interface and controlled by the control unit to output the video data to the display or through the network interface. The bus interface is coupled between the interface controller and the control unit and is for inputting the video data from the control unit to the interface controller.